CN111415559B - Series-type low-voltage three-phase four-wire electric energy metering simulation wiring training cabinet - Google Patents

Series-type low-voltage three-phase four-wire electric energy metering simulation wiring training cabinet Download PDF

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CN111415559B
CN111415559B CN202010467044.0A CN202010467044A CN111415559B CN 111415559 B CN111415559 B CN 111415559B CN 202010467044 A CN202010467044 A CN 202010467044A CN 111415559 B CN111415559 B CN 111415559B
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switch
current
voltage
station
signal
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CN111415559A (en
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贾宏伟
黄进强
赖茂松
陈明珠
谢耀明
叶学时
钟汉勇
罗东
邓润鑫
罗子勉
朱元成
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Dongguan Power Supply Bureau of Guangdong Power Grid Co Ltd
Heyuan Power Supply Bureau of Guangdong Power Grid Co Ltd
Training and Evaluation Center of Guangdong Power Grid Co Ltd
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Dongguan Power Supply Bureau of Guangdong Power Grid Co Ltd
Heyuan Power Supply Bureau of Guangdong Power Grid Co Ltd
Training and Evaluation Center of Guangdong Power Grid Co Ltd
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
    • G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
    • G09B23/18—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism
    • G09B23/188—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism for motors; for generators; for power supplies; for power distribution
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B9/00—Simulators for teaching or training purposes

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  • Pure & Applied Mathematics (AREA)
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Abstract

The invention discloses a series-connection type low-voltage three-phase four-wire electric energy metering simulation wiring training cabinet which comprises a control panel, a first station and a second station, wherein the control panel comprises a controller, and an operator can control a voltage signal U through the controllerAVoltage signal UBVoltage signal UCCurrent signal IACurrent signal IBCurrent signal ICAnd the zero line N is connected or disconnected with a voltage signal terminal, a first current signal terminal, a second current signal terminal and a third current signal terminal corresponding to the first station, so that the checking requirements of checking the wiring and detection between the first station and the second station are met by checking personnel, the training efficiency of the operating personnel is improved, the capability of the operating personnel can be checked in a standardized manner, the technical problem that the mode of setting the wiring or fault type of a computer control circuit in the prior art is greatly different from the field work, and the requirements of training and checking the actual operation of the operating personnel cannot be met really is solved.

Description

Series-type low-voltage three-phase four-wire electric energy metering simulation wiring training cabinet
Technical Field
The invention relates to the field of training in power production, in particular to a series-connection type low-voltage three-phase four-wire electric energy metering simulation wiring training cabinet.
Background
At present, the power industry develops rapidly, and in order to ensure that the power industry produces and the electric energy metering can run safely, reliably, accurately and economically, the electric power industry must rely on instruments and meters which are arranged on the power production field and can measure electrical parameters such as voltage, current, power and electric energy. For operators in power production, the operators need to enter the field and can be officially put on duty only through a series of theoretical learning and actual operations, the theoretical learning can be generally obtained through teacher teaching, textbook reading and other learning modes, the actual operations can be learned, and as the opportunities of going to the field are few, the opportunities of directly contacting instrument equipment, wiring control and the like are fewer, so that the actual operations can be realized through a training device.
The safe, reliable and accurate measurement of electric energy must be ensured by means of instruments and meters for detecting electric parameters such as voltage, current, power factor, frequency and the like. Therefore, accurate collection of parameters and the correct form of wiring in the operation of electric energy metering are of the same importance as instrumentation. All the work needs electric energy metering personnel to complete, and the professional quality of the work is the greatest importance of the whole metering work. At present, most of the detection and verification work of electric energy metering is to perform analysis around an electric energy metering device, such as detection of a voltage transformer (TV or PT), a current transformer (TA or CT), an electric energy meter (active and reactive electric energy meters), and the like. However, whether any electric energy metering device detection is selected, the wiring correctness in the metering must be ensured, otherwise, the device cannot meter correctly even if the device is accurate. Because of carelessness in the installation and wiring processes of the electric energy meter for electric energy metering or unclear phase sequence and polarity of a current-voltage line, the electric energy meter is often connected in a wrong way, so that the electric energy meter cannot rotate, rotates reversely or rotates forwards and reversely suddenly, or the metering is wrong even if the electric energy meter rotates forwards all the time. Therefore, in the process of performing practical training, various situations should be simulated as much as possible, the existing training equipment is used for training and examining the electric energy metering by setting a wiring or fault type through a computer control circuit, but in the field work, many circuits are finished by manual wiring, so that the mode of setting the wiring or fault type by using the computer control circuit is greatly different from the field work, and the requirements of training and examining the practical operation of operators cannot be really met.
In summary, the manner of setting the wiring or fault type of the computer control circuit in the prior art is greatly different from the work on site, and the requirements of training and checking the actual operation of the operator cannot be met.
Disclosure of Invention
The invention provides a series-connection type low-voltage three-phase four-wire electric energy metering simulation wiring training cabinet which is used for solving the technical problems that the mode of setting wiring or fault types of a computer control circuit in the prior art is greatly different from the on-site work, and the requirements of training and checking the actual operation of operators cannot be really met.
The invention provides a series-connection type low-voltage three-phase four-wire electric energy metering simulation wiring training cabinet which comprises a control panel, a first station and a second station, wherein the control panel comprises a controller, the first station and the second station respectively comprise an electric quantity metering device and a reference signal terminal, the electric quantity metering device comprises a voltage metering module, a current metering module and a zero line signal terminal connected to a zero line N, the voltage metering module comprises three voltage signal terminals, and the current metering module comprises two first current signal terminals, two second current signal terminals and two third current signal terminals;
the controller is connected to a voltage signal UAVoltage signal UBVoltage signal UCCurrent signal IACurrent signal IBCurrent signal ICAnd a neutral line N; the controller is used for controlling three voltage signal terminals and a voltage signal U of the first stationAVoltage signal UBSum voltage signal UCControls the first current signal terminal, the second current signal terminal, the third current signal terminal and the current signal I of the first stationACurrent signal IBCurrent signal ICConnecting or disconnecting the zero line N;
the three voltage signal terminals of the first station are connected with the three voltage signal terminals of the second station, and the three voltage signal terminals of the first station are connected with a voltage signal UAVoltage signal UBVoltage signal UCAnd the three voltage signal terminals of the second station are connected with a voltage signal UAVoltage signal UBVoltage signal UCIn different order, the reference signal terminal is connected to a voltage signal UAVoltage signal UBVoltage signal UCThe reference signal terminal is grounded or connected to zero;
wherein the reference signal terminal is switched in for the purpose of determining the position of one of the voltage signals, so that the absolute phase can be obtainedIf there is no reference signal terminal, then only a relative voltage phase sequence, rather than an absolute voltage phase sequence, is available. Usually by applying said voltage signal UBCarrying out zero connection or grounding to determine the voltage signal U on the phasor diagramBTo obtain the absolute voltage phase sequence.
The first current signal terminal, the second current signal terminal and the third current signal terminal of the first station are connected with the first current signal terminal, the second current signal terminal and the third current signal terminal of the second station, and the first current signal terminal, the second current signal terminal and the third current signal terminal of the first station are connected with a current signal IACurrent signal IBCurrent signal ICThe sequence of the zero line N and the access current signals I of the first current signal terminal, the second current signal terminal and the third current signal terminal of the second stationACurrent signal IBCurrent signal ICAnd the zero line N are in different orders.
One first current signal terminal, one second current signal terminal and one third current signal terminal of the two first current signal terminals, the two second current signal terminals and the two third current signal terminals of the first station and the second station are connected to a zero line N, and the other first current signal terminal, the other second current signal terminal and the other third current signal terminal are correspondingly connected to a current signal IACurrent signal IBCurrent signal ICAnd a zero line N.
Preferably, the three voltage signal terminals are a first signal terminal, a fourth signal terminal and a seventh signal terminal;
the two first current signal terminals are a second signal terminal and a third signal terminal;
the two second current signal terminals are a fifth signal terminal and a sixth signal terminal;
the two third current signal terminals are an eighth signal terminal and a ninth signal terminal;
the controller comprises a voltage switch group and a current switch group, wherein the voltage switch group is connected into the currentPressure signal UAVoltage signal UBAnd a voltage signal, the current switch is connected with a current signal IACurrent signal IBCurrent signal ICA zero line N;
the voltage switch group is used for controlling the connection or disconnection between a first signal terminal of the first station and a voltage signal, controlling the connection or disconnection between a fourth signal terminal of the first station and the voltage signal, and controlling the connection or disconnection between a seventh signal terminal of the first station and the voltage signal;
the current switch group is used for controlling the connection or disconnection between the second signal terminal of the first station and a current signal, controlling the connection or disconnection between the third signal terminal of the first station and the current signal, controlling the connection or disconnection between the fifth signal terminal of the first station and the current signal, controlling the connection or disconnection between the sixth signal terminal of the first station and the current signal, controlling the connection or disconnection between the eighth signal terminal of the first station and the current signal, and controlling the connection or disconnection between the ninth signal terminal of the first station and the current signal.
Preferably, the voltage switch group comprises a first voltage switch group, a second voltage switch group, a third voltage switch group, a fourth voltage switch group, a fifth voltage switch group and a sixth voltage switch group;
the first voltage switch group is used for controlling a first signal terminal and a voltage signal U of a first stationAControls the fourth signal terminal of the first station and the voltage signal UBA seventh signal terminal for switching on or off and controlling the first station and a voltage signal UCAccess or disconnection of;
the second voltage switch group is used for controlling a first signal terminal and a voltage signal U of a first stationBControls the fourth signal terminal of the first station and the voltage signal UCControls the seventh signal terminal of the first station and the voltage signal UAAccess or disconnection of;
the third voltage switch group is used for controlling the first signal terminal and the voltage signal of the first stationUCControls the fourth signal terminal of the first station and the voltage signal UAControls the seventh signal terminal of the first station and the voltage signal UBAccess or disconnection of;
the fourth voltage switch group of the first station is used for controlling the first signal terminal and the voltage signal UCControls the fourth signal terminal of the first station and the voltage signal UBControls the seventh signal terminal of the first station and the voltage signal UAAccess or disconnection of;
the fifth voltage switch group is used for controlling the first signal terminal and the voltage signal U of the first stationBControls the fourth signal terminal of the first station and the voltage signal UAControls the seventh signal terminal of the first station and the voltage signal UCAccess or disconnection of;
the sixth voltage switch group is used for controlling the first signal terminal and the voltage signal U of the first stationAControls the fourth signal terminal of the first station and the voltage signal UCControls the seventh signal terminal of the first station and the voltage signal UBAccess or disconnection.
Preferably, the first voltage switch group, the second voltage switch group, the third voltage switch group, the fourth voltage switch group, the fifth voltage switch group and the sixth voltage switch group each include a first switch, a fourth switch and a seventh switch;
the first end of the first switch of the first voltage switch group, the first end of the first switch of the second voltage switch group, the first end of the first switch of the third voltage switch group, the first end of the first switch of the fourth voltage switch group, the first end of the first switch of the fifth voltage switch group and the first end of the first switch of the sixth voltage switch group are connected in series, the first end of the first switch of the first voltage switch group is connected with a voltage signal UA；
The first end of the fourth switch of the first voltage switch group, the first end of the fourth switch of the second voltage switch group and the fourth switch of the third voltage switch groupThe first end of the fourth switch of the first voltage switch group, the first end of the fourth switch of the fourth voltage switch group, the first end of the fourth switch of the fifth voltage switch group and the first end of the fourth switch of the sixth voltage switch group are connected in series, and the first end of the fourth switch of the first voltage switch group is connected with a voltage signal UB；
The first end of the seventh switch of the first voltage switch group, the first end of the seventh switch of the second voltage switch group, the first end of the seventh switch of the third voltage switch group, the first end of the seventh switch of the fourth voltage switch group, the first end of the seventh switch of the fifth voltage switch group and the first end of the seventh switch of the sixth voltage switch group are connected in series, and the first end of the seventh switch of the first voltage switch group is connected with a voltage signal UC；
The second end of the first switch of the first voltage switch group, the second end of the fourth switch of the second voltage switch group, the second end of the seventh switch of the third voltage switch group, the second end of the seventh switch of the fourth voltage switch group, the second end of the fourth switch of the fifth voltage switch group and the second end of the first switch of the sixth voltage switch group are connected through leads, and the second end of the first switch of the sixth voltage switch group is connected with the first signal terminal;
the second end of the fourth switch of the first voltage switch group, the second end of the seventh switch of the second voltage switch group, the second end of the first switch of the third voltage switch group, the second end of the fourth switch of the fourth voltage switch group, the second end of the first switch of the fifth voltage switch group and the second end of the seventh switch of the sixth voltage switch group are connected through a lead, and the second end of the seventh switch of the sixth voltage switch group is connected with the fourth terminal through a lead;
the second end of the seventh switch of the first voltage switch group, the second end of the first switch of the second voltage switch group, the second end of the fourth switch of the third voltage switch group, the second end of the first switch of the fourth voltage switch group, the second end of the seventh switch of the fifth voltage switch group and the second end of the fourth switch of the sixth voltage switch group are connected through a lead, and the second end of the fourth switch of the sixth voltage switch group and the seventh signal terminal are connected through a lead.
Preferably, the current switch group includes a first current switch group, a second current switch group, a third current switch group, a fourth current switch group, a fifth current switch group, a sixth current switch group, a seventh current switch group, an eighth current switch group and a ninth current switch group;
the first current switch group is used for controlling a second signal terminal of a first station and a voltage signal IAThe third signal terminal of the first station and the zero line N are controlled to be connected or disconnected, and the fifth signal terminal of the first station and the current signal I are controlledBThe sixth signal terminal of the first station and the zero line N are controlled to be connected or disconnected, and the eighth signal terminal of the first station and the current signal I are controlledCThe ninth signal terminal of the first station and the zero line N are controlled to be connected or disconnected;
the second current switch group is used for controlling a second signal terminal of the first station and a voltage signal IBThe third signal terminal of the first station and the zero line N are controlled to be connected or disconnected, and the fifth signal terminal of the first station and the current signal I are controlledCThe sixth signal terminal of the first station and the zero line N are controlled to be connected or disconnected, and the eighth signal terminal of the first station and the current signal I are controlledAThe ninth signal terminal of the first station and the zero line N are controlled to be connected or disconnected;
the third current switch group is used for controlling the second signal terminal of the first station and the voltage signal ICThe third signal terminal of the first station and the zero line N are controlled to be connected or disconnected, and the fifth signal terminal of the first station and the current signal I are controlledAThe sixth signal terminal of the first station and the zero line N are controlled to be connected or disconnected, and the eighth signal terminal of the first station and the current signal I are controlledBThe ninth signal terminal of the first station and the zero line N are controlled to be connected or disconnected;
the fourth current switch group is used for controlling the second signal terminal of the first station and the voltage signal ICTo or from the first station, a third station controlling the first stationThe signal terminal is connected or disconnected with the zero line N to control the fifth signal terminal of the first station and the current signal IBThe sixth signal terminal of the first station and the zero line N are controlled to be connected or disconnected, and the eighth signal terminal of the first station and the current signal I are controlledAThe ninth signal terminal of the first station and the zero line N are controlled to be connected or disconnected;
the fifth current switch group is used for controlling the second signal terminal of the first station and the voltage signal IBThe third signal terminal of the first station and the zero line N are controlled to be connected or disconnected, and the fifth signal terminal of the first station and the current signal I are controlledAThe sixth signal terminal of the first station and the zero line N are controlled to be connected or disconnected, and the eighth signal terminal of the first station and the current signal I are controlledCThe ninth signal terminal of the first station and the zero line N are controlled to be connected or disconnected;
the sixth current switch group is used for controlling the second signal terminal of the first station and the voltage signal IAThe third signal terminal of the first station and the zero line N are controlled to be connected or disconnected, and the fifth signal terminal of the first station and the current signal I are controlledCThe sixth signal terminal of the first station and the zero line N are controlled to be connected or disconnected, and the eighth signal terminal of the first station and the current signal I are controlledBThe ninth signal terminal of the first station and the zero line N are controlled to be connected or disconnected;
the seventh current switch group is used for controlling the connection or disconnection of the second signal terminal of the first station and the zero line N and controlling the third signal terminal of the first station and the voltage signal IAControls the fifth signal terminal of the first station and the current signal IBThe sixth signal terminal of the first station and the zero line N are controlled to be connected or disconnected, and the eighth signal terminal of the first station and the current signal I are controlledCThe ninth signal terminal of the first station and the zero line N are controlled to be connected or disconnected;
the eighth current switch groupSecond signal terminal for controlling first station and voltage signal IAThe third signal terminal of the first station and the zero line N are controlled to be connected or disconnected, the fifth signal terminal of the first station and the zero line N are controlled to be connected or disconnected, and the sixth signal terminal of the first station and the current signal I are controlled to be connected or disconnectedBControls the eighth signal terminal of the first station and the current signal ICThe ninth signal terminal of the first station and the zero line N are controlled to be connected or disconnected;
the ninth current switch group is used for controlling the second signal terminal of the first station and the voltage signal IAThe third signal terminal of the first station and the zero line N are controlled to be connected or disconnected, and the fifth signal terminal of the first station and the current signal I are controlledBThe sixth signal terminal of the first station and the zero line N are controlled to be connected or disconnected, the eighth signal terminal of the first station and the zero line N are controlled to be connected or disconnected, and the ninth signal terminal of the first station and the current signal I are controlled to be connected or disconnectedCAccess or disconnection.
Preferably, the first current switch group, the second current switch group, the third current switch group, the fourth current switch group, the fifth current switch group, the sixth current switch group, the seventh current switch group, the eighth current switch group and the ninth current switch group all include a second switch, a third switch, a fifth switch, a sixth switch, an eighth switch and a ninth switch;
the first end of the second switch of the first current switch group, the first end of the second switch of the second current switch group, the first end of the second switch of the third current switch group, the first end of the second switch of the fourth current switch group, the first end of the second switch of the fifth current switch group, the first end of the second switch of the sixth current switch group, the first end of the second switch of the seventh current switch group, the first end of the second switch of the eighth current switch group and the first end of the second switch of the ninth current switch group are connected in series, the first end of the second switch of the first current switch group is connected with a voltage signal IA；
The first end of a third switch of the first current switch group, the first end of a third switch of the second current switch group, the first end of a third switch of the third current switch group, the first end of a third switch of the fourth current switch group, the first end of a third switch of the fifth current switch group, the first end of a third switch of the sixth current switch group, the first end of a third switch of the seventh current switch group, the first end of a third switch of the eighth current switch group and the first end of a third switch of the ninth current switch group are connected in series, and the first end of the third switch of the first current switch group is connected with a zero line N;
the first end of the fifth switch of the first current switch group, the first end of the fifth switch of the second current switch group, the first end of the fifth switch of the third current switch group, the first end of the fifth switch of the fourth current switch group, the first end of the fifth switch of the fifth current switch group, the first end of the fifth switch of the sixth current switch group, the first end of the fifth switch of the seventh current switch group, the first end of the fifth switch of the eighth current switch group and the first end of the fifth switch of the ninth current switch group are connected in series, and the first end of the fifth switch of the first current switch group is connected with a voltage signal IB；
The first end of a sixth switch of the first current switch group, the first end of a sixth switch of the second current switch group, the first end of a sixth switch of the third current switch group, the first end of a sixth switch of the fourth current switch group, the first end of a sixth switch of the fifth current switch group, the first end of a sixth switch of the sixth current switch group, the first end of a sixth switch of the seventh current switch group, the first end of a sixth switch of the eighth current switch group and the first end of a sixth switch of the ninth current switch group are connected in series, and the first end of the sixth switch of the first current switch group is connected with a zero line N;
a first end of an eighth switch of the first current switch group, a first end of an eighth switch of the second current switch group, a first end of an eighth switch of the third current switch group, a first end of an eighth switch of the fourth current switch group, a first end of an eighth switch of the fifth current switch group, a first end of an eighth switch of the sixth current switch group, a first end of an eighth switch of the seventh current switch group, a first end of an eighth switch of the eighth current switch group, and a first end of an eighth switch of the ninth current switch group, the first ends of the eighth switches of the eighth current switch group and the first end of the eighth switch of the ninth current switch group being connected in series, the eighth switch group and the eighth switch being connected in seriesThe first end of the eighth switch of a current switch group is connected with a voltage signal IC；
The first end of a ninth switch of the first current switch group, the first end of a ninth switch of the second current switch group, the first end of a ninth switch of the third current switch group, the first end of a ninth switch of the fourth current switch group, the first end of a ninth switch of the fifth current switch group, the first end of a ninth switch of the sixth current switch group, the first end of a ninth switch of the seventh current switch group, the first end of a ninth switch of the eighth current switch group and the first end of a ninth switch of the ninth current switch group are connected in series, and the first end of the ninth switch of the first current switch group is connected with a zero line N;
the second end of the second switch of the first current switch group, the second end of the fifth switch of the second current switch group, the second end of the eighth switch of the third current switch group, the second end of the eighth switch of the fourth current switch group, the second end of the fifth switch of the fifth current switch group, the second end of the second switch of the sixth current switch group, the second end of the third switch of the seventh current switch group, the second end of the second switch of the eighth current switch group and the second end of the second switch of the ninth current switch group are connected through a conducting wire, and the second end of the second switch of the ninth current switch group is connected with a second signal terminal;
the second end of the third switch of the first current switch group, the second end of the third switch of the second current switch group, the second end of the third switch of the third current switch group, the second end of the third switch of the fourth current switch group, the second end of the third switch of the fifth current switch group, the second end of the third switch of the sixth current switch group, the second end of the second switch of the seventh current switch group, the second end of the third switch of the eighth current switch group and the second end of the third switch of the ninth current switch group are connected through a conducting wire, and the second end of the eighth switch of the ninth current switch group is connected with a third signal terminal;
the second end of the fifth switch of the first current switch group, the second end of the eighth switch of the second current switch group, the second end of the second switch of the third current switch group, the second end of the fifth switch of the fourth current switch group, the second end of the second switch of the fifth current switch group, the second end of the eighth switch of the sixth current switch group, the second end of the fifth switch of the seventh current switch group, the second end of the sixth switch of the eighth current switch group and the second end of the fifth switch of the ninth current switch group are connected through a conducting wire, and the second end of the fifth switch of the ninth current switch group is connected with a fifth signal terminal;
the second end of the sixth switch of the first current switch group, the second end of the sixth switch of the second current switch group, the second end of the sixth switch of the third current switch group, the second end of the sixth switch of the fourth current switch group, the second end of the sixth switch of the fifth current switch group, the second end of the sixth switch of the sixth current switch group, the second end of the sixth switch of the seventh current switch group, the second end of the fifth switch of the eighth current switch group and the second end of the sixth switch of the ninth current switch group are connected through a conducting wire, and the second end of the sixth switch of the ninth current switch group is connected with a sixth signal terminal;
the second end of the eighth switch of the first current switch group, the second end of the second switch of the second current switch group, the second end of the fifth switch of the third current switch group, the second end of the second switch of the fourth current switch group, the second end of the eighth switch of the fifth current switch group, the second end of the fifth switch of the sixth current switch group, the second end of the eighth switch of the seventh current switch group, the second end of the eighth switch of the eighth current switch group and the second end of the ninth switch group of the ninth current switch group are connected through a conducting wire, and the second end of the ninth switch of the ninth current switch group and the eighth signal terminal are connected through a conducting wire;
the second end of the ninth switch of the first current switch group, the second end of the ninth switch of the second current switch group, the second end of the ninth switch of the third current switch group, the second end of the ninth switch of the fourth current switch group, the second end of the ninth switch of the fifth current switch group, the second end of the ninth switch of the sixth current switch group, the second end of the ninth switch of the seventh current switch group, the second end of the ninth switch of the eighth current switch group and the second end of the eighth switch of the ninth current switch group are connected through a conducting wire, and the second end of the eighth switch of the ninth current switch group is connected with a ninth signal terminal.
Preferably, the electric energy metering device of the first station and the electric energy metering device of the second station both further comprise a tenth signal terminal, the tenth signal terminal of the first station is connected to a zero line N, the tenth signal terminal of the first station is connected with the tenth signal terminal of the second station, the electric energy metering device is a three-phase four-wire electric energy meter, the electric energy meter comprises ten wiring terminals, the ten wiring terminals are respectively three voltage wiring terminals, two first current wiring terminals, two second current wiring terminals, two third current wiring terminals and a zero line wiring terminal, the three voltage wiring terminals are respectively connected with a first signal terminal, a fourth signal terminal and a seventh signal terminal, the two first current wiring terminal groups are respectively connected with a second signal terminal and a third signal terminal, the second current wiring terminal group is respectively connected with a fifth signal terminal and a sixth signal terminal, the third current wiring terminal is correspondingly connected with an eighth signal terminal and a ninth signal terminal respectively, and the tenth wiring terminal is connected with a tenth signal terminal.
Preferably, the first station and the second station further comprise a combined junction box and a junction box row, the junction box row comprises a first junction box corresponding to the first signal terminal, a second junction box corresponding to the second signal terminal, a third junction box corresponding to the third signal terminal, a fourth junction box corresponding to the fourth signal terminal, a fifth junction box corresponding to the fifth signal terminal, a sixth junction box corresponding to the sixth signal terminal, a seventh junction box corresponding to the seventh signal terminal, an eighth junction box corresponding to the eighth signal terminal, a ninth junction box corresponding to the ninth signal terminal, a tenth junction box corresponding to the tenth signal terminal, and an eleventh junction box corresponding to the reference signal terminal, the combined junction box comprises at least ten groups of junction terminals and an external module for externally connecting an accessed circuit, each group of the junction terminals is provided with a connection input terminal and a connection output terminal in one-to-one correspondence, the external module is arranged between a connection input terminal and a connection output terminal, and the connection output terminal of the combined junction box is connected with a first signal terminal, a second signal terminal, a third signal terminal, a fourth signal terminal, a fifth signal terminal, a sixth signal terminal, a seventh signal terminal, an eighth signal terminal, a ninth signal terminal and a tenth signal terminal in a one-to-one correspondence manner; and the connection output terminals of the combined junction box are connected with a first connecting terminal, a second connecting terminal, a third connecting terminal, a fourth connecting terminal, a fifth connecting terminal, a sixth connecting terminal, a seventh connecting terminal, an eighth connecting terminal, a ninth connecting terminal and a tenth connecting terminal in a one-to-one correspondence manner.
Preferably, the training cabinet further comprises a third station and a fourth station, the third station, the fourth station and the first station are the same, the first signal terminal of the first station, the fourth signal terminal of the second station, the seventh signal terminal of the third station and the seventh signal terminal of the fourth station are connected in series, the fourth signal terminal of the first station, the first signal terminal of the second station, the first signal terminal of the third station and the fourth signal terminal of the fourth station are connected in series, and the seventh signal terminal of the first station, the seventh signal terminal of the second station, the fourth signal terminal of the third station and the first signal terminal of the fourth station are connected in series;
the second signal terminal of the first station, the fifth signal terminal of the second station, the eighth signal terminal of the third station and the eighth signal terminal of the fourth station are connected in series, the third signal terminal of the first station, the sixth signal terminal of the second station, the ninth signal terminal of the third station and the ninth signal terminal of the fourth station are connected in series, the fifth signal terminal of the first station, the second signal terminal of the second station, the second signal terminal of the third station and the eighth signal terminal of the fourth station are connected in series, the sixth signal terminal of the first station, the third signal terminal of the second station, the third signal terminal of the third station and the ninth signal terminal of the fourth station are connected in series, the eighth signal terminal of the first station, the eighth signal terminal of the second station, the fifth signal terminal of the third station and the second signal terminal of the fourth station are connected in series, the ninth signal terminal of the first station, the ninth signal terminal of the second station, the sixth signal terminal of the third station and the third signal terminal of the fourth station are connected in series;
the tenth signal terminal of the first station, the tenth signal terminal of the second station, the tenth signal terminal of the third station and the tenth signal terminal of the fourth station are connected in series;
the reference signal terminal of the first station, the reference signal terminal of the second station, the reference signal terminal of the third station and the reference signal terminal of the fourth station are connected in series.
Preferably, the training cabinet further comprises a power supply signal circuit, a voltage regulating circuit, an isolation voltage regulating circuit and a load circuit; the control panel further comprises a power switch, a capacitive switch, an inductive indicator light, a capacitive indicator light, a first voltage switch group main switch, a second voltage switch group main switch, a third voltage switch group main switch, a fourth voltage switch group main switch, a fifth voltage switch group main switch, a sixth voltage switch group main switch, a first current switch group main switch, a second current switch group main switch, a third current switch group main switch, a fourth current switch group main switch, a fifth current switch group main switch, a sixth current switch group main switch, a seventh current switch group main switch, an eighth current switch group main switch, a ninth current switch group main switch, a voltage phase sequence indicator light, a current reverse polarity indicator light, a voltage amplitude display and a current amplitude display;
the power switch is used for controlling the voltage signal U of the power signal circuitAVoltage signal UBSum voltage signal UCIs connected or disconnected with the voltage regulating circuit;
the voltage regulating circuit is used for regulating a voltage signal U of an input endAVoltage signal UBSum voltage signal UCThe amplitude of the power supply signal circuit is adjusted and isolated;
the isolation voltage regulating circuit is used for isolating the voltage signal output by the voltage regulating circuit into two paths, wherein one path of voltage signal is input to the load circuit, and the other path of voltage signal is input to each voltage switch group of the controller;
the load circuit comprises an inductive load and a capacitive load, and the capacitive switch is used for switching the inductive load connected to the load circuit to the capacitive load;
the inductive indicator light is used for displaying that the load circuit is connected with an inductive load;
the capacitive indicator light is used for displaying that the load circuit is connected with the capacitive load;
the load circuit is used for connecting a voltage signal UAConverted into a current signal IAVoltage signal UBConverted into a current signal IBVoltage signal UCConverted into a current signal ICAnd the current signal I is converted intoACurrent signal IBAnd a current signal ICInput to each current switch group;
the first voltage switch group main switch and a first switch, a fourth switch and a seventh switch in the first voltage switch group are linkage switches;
the second voltage switch group main switch and a first switch, a fourth switch and a seventh switch in the second voltage switch group are linkage switches;
the main switch of the third voltage switch group and the first switch, the fourth switch and the seventh switch in the third voltage switch group are linkage switches;
the fourth voltage switch group main switch and a first switch, a fourth switch and a seventh switch in the fourth voltage switch group are linkage switches;
the main switch of the fifth voltage switch group and a first switch, a fourth switch and a seventh switch in the fifth voltage switch group are linkage switches;
the sixth voltage switch group main switch and a first switch, a fourth switch and a seventh switch in the sixth voltage switch group are linkage switches;
the first current switch group main switch and a second switch, a third switch, a fifth switch, a sixth switch, an eighth switch and a ninth switch in the first current switch group are linkage switches;
the second current switch group main switch and a second switch, a third switch, a fifth switch, a sixth switch, an eighth switch and a ninth switch in the second current switch group are linkage switches;
the main switch of the third current switch group and a second switch, a third switch, a fifth switch, a sixth switch, an eighth switch and a ninth switch in the third current switch group are linkage switches;
the fourth current switch group main switch and a second switch, a third switch, a fifth switch, a sixth switch, an eighth switch and a ninth switch in the fourth current switch group are linkage switches;
the main switch of the fifth current switch group and a second switch, a third switch, a fifth switch, a sixth switch, an eighth switch and a ninth switch in the fifth current switch group are linkage switches;
the sixth current switch group main switch and a second switch, a third switch, a fifth switch, a sixth switch, an eighth switch and a ninth switch in the sixth current switch group are linkage switches;
the seventh current switch group main switch and a second switch, a third switch, a fifth switch, a sixth switch, an eighth switch and a ninth switch in the seventh current switch group are linkage switches;
the eighth current switch group main switch and a second switch, a third switch, a fifth switch, a sixth switch, an eighth switch and a ninth switch in the eighth current switch group are linkage switches;
the ninth current switch group main switch and a second switch, a third switch, a fifth switch, a sixth switch, an eighth switch and a ninth switch in the ninth current switch group are linkage switches;
the voltage phase sequence indicator light is used for displaying a voltage phase sequence corresponding to the current first station;
the current phase sequence indicator light is used for displaying a current phase sequence corresponding to the current first station;
the voltage amplitude display is electrically connected with the voltage metering device of the first station and is used for displaying the amplitude measured by the voltage metering module of the first station;
the current amplitude display is electrically connected with the current metering device of the first station and used for displaying the amplitude measured by the current metering module of the first station.
According to the technical scheme, the invention has the following advantages:
the training cabinet comprises a control panel, wherein the control panel comprises a controller, a first station and a second station, the first station and the second station are used for operators to detect and wire, and the operators can control a voltage signal U through the controllerAVoltage signal UBVoltage signal UCCurrent signal IACurrent signal IBCurrent signal ICAnd the zero line N is connected or disconnected with a voltage signal terminal, a first current signal terminal, a second current signal terminal and a third current signal terminal corresponding to the first station, the voltage signal and the current signal which are connected to the first station are recognized, the safety operation before the first station is connected can be realized, the conditions of voltage phase sequence, current phase sequence and current reversed polarity are set through the first station, and an operator can recognize the wiring mode between the control panel and the first station and the types of the voltage phase sequence, the current phase sequence and the current reversed polarity after the wiring in the training and examination process. The method has the advantages that the checking requirements are met by checking personnel for wiring and detection between the first station and the second station, in the operation process of the operating personnel, different conditions of voltage phase sequence, current phase sequence and current reverse polarity are obtained by setting different conditions, the conditions of wiring setting and control detection related to a production field are closer, the training efficiency of the operating personnel can be improved, meanwhile, the capability of the operating personnel can be checked in a standardized mode, the technical problem that the mode of setting wiring or fault types of a computer control circuit in the prior art is greatly different from the mode of working on the field, and the requirements of training and checking for actual operation of the operating personnel cannot be met really is solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a control panel of a series-connection type low-voltage three-phase four-wire electric energy metering simulation wiring training cabinet according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a cabinet body of a series-connection type low-voltage three-phase four-wire electric energy metering simulation wiring training cabinet provided by an embodiment of the invention.
Fig. 3 is a schematic structural diagram of a first station of a series-connection type low-voltage three-phase four-wire electric energy metering simulation wiring training cabinet according to an embodiment of the present invention.
Fig. 4 is a frame diagram of a connection circuit of a series-connection type low-voltage three-phase four-wire electric energy metering simulation wiring training cabinet according to an embodiment of the present invention.
Fig. 5 is a control wiring diagram of each voltage switch group and a first station of a series-connection type low-voltage three-phase four-wire electric energy metering simulation wiring training cabinet provided by the embodiment of the invention.
Fig. 6 is a control wiring diagram of each current switch group and a first station of a series-connection type low-voltage three-phase four-wire electric energy metering simulation wiring training cabinet provided by the embodiment of the invention.
Fig. 7 is a voltage signal wiring diagram among a first station, a second station, a third station and a fourth station of a series-connection type low-voltage three-phase four-wire electric energy metering simulation wiring training cabinet provided by an embodiment of the invention.
Fig. 8 is a current signal wiring diagram among a first station, a second station, a third station and a fourth station of a series-connection type low-voltage three-phase four-wire electric energy metering simulation wiring training cabinet provided by the embodiment of the invention.
In the figure:
1. a cabinet body; 2. a door is arranged; 3. a lower door; 4. an output terminal interface; 5. a control panel; 51. a power switch; 521. a first voltage switch group main switch; 522. a second voltage switch group main switch; 523. a third voltage switch group main switch; 524. a fourth voltage switch group main switch; 525. a fifth voltage switch group main switch; 526. a sixth voltage switch group main switch; 53. a voltage phase sequence indicator light; 541. a first current switch group main switch; 542. a second current switch group main switch; 543. a third current switch group main switch; 544. a fourth current switch group main switch; 545. a fifth current switch group main switch; 546. a sixth current switch group main switch; 547. a seventh current switch group main switch; 548. an eighth current switch group main switch; 549. a ninth current switch group main switch; 55. a current phase sequence indicator light; 56. a capacitive switch; 561. a capacitive indicator light; 562. an inductive indicator light; 57. a current reverse polarity indicator light; 581. a voltage amplitude display; 582. a current amplitude display; 61. a first station; 611. an electric energy metering device; 6111. a voltage metering module; 6112. a current metering module; 612. a joint junction box; 613. a terminal block; 62. a second station; 63. a third station; 64. a fourth station; 7. a power supply signal circuit; 8. a voltage regulation circuit; 9. an isolation voltage regulation circuit; 10. a load circuit; 11. a wiring control circuit; 101. a first signal terminal of a first station; 102. a second signal terminal of the first station; 103. a third signal terminal of the first station; 104. a fourth signal terminal of the first station; 105. a fifth signal terminal of the first station; 106. a sixth signal terminal of the first station; 107. a seventh signal terminal of the first station; 108. an eighth signal terminal of the first station; 109. a ninth signal terminal of the first station; 111. a first voltage switch group; 112. a second voltage switch group; 113. a third voltage switch group; 114. a fourth voltage switch group; 115. a fifth voltage switch group; 116. a sixth voltage switch group; 121. a first current switch group; 122. a second current switch group; 123. a third current switch group; 124. a fourth current switch group; 125. a fifth current switch group; 126. a sixth current switch group; 127. a seventh current switch group; 128. an eighth current switch group; 129. and a ninth current switch group.
Detailed Description
The invention provides a series-connection type low-voltage three-phase four-wire electric energy metering simulation wiring training cabinet, which is used for solving the technical problem that the mode of setting wiring or fault types of a computer control circuit in the prior art is greatly different from the on-site work, and the requirements of training and checking the actual operation of operators cannot be really met.
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 8, wherein, for convenience of clear expression of the relationship between the wirings, the signal terminals at the stations of fig. 7 and 8 are arranged in order of small to large in order of a first signal terminal, a second signal terminal, a third signal terminal, a fourth signal terminal, a fifth signal terminal, a sixth signal terminal, a seventh signal terminal, an eighth signal terminal, a ninth signal terminal, a tenth signal terminal, and a reference signal terminal, so as to refer to fig. 7 and 8.
The invention provides a series-connection type low-voltage three-phase four-wire electric energy metering simulation wiring training cabinet which comprises a cabinet body 1, wherein the cabinet body 1 comprises an upper part of the cabinet body 1 and a lower part of the cabinet body 1, at least eight input terminal interfaces for connecting wires (signal sources) and at least eight output terminal interfaces 4 for connecting the wires (signal sources) are arranged at the lower part of the cabinet body 1, the input terminal interfaces and the output terminal interfaces 4 can be arranged on the same side wall at the lower part of the cabinet body 1 or different side walls at the lower part of the cabinet body 1, and enough space is reserved for placing the next cabinet body 1 when the cabinet bodies 1 are connected.
Two sides around the cabinet body 1 lower part are provided with lower door 3, and the operating personnel of being convenient for connects the wire in the cabinet body 1. An upper door 2 which can be opened and closed is installed at the upper part of the cabinet body 1 through a first hinge, and a first door handle is arranged on the upper door 2; the cabinet body comprises a power signal circuit 7, a voltage regulating circuit 8, an isolation voltage regulating circuit 9, a load circuit 10, a wiring control circuit 11, a control panel 5 and a plurality of stations, wherein the control panel 5 is arranged on the outer surface of the upper door or the side surface of the upper part of the cabinet body, so that an assessment worker or an operator can conveniently perform control operation, the first station 61, the second station 62, the third station 63 and the fourth station 64 are transversely arranged on the upper part of the cabinet body, each station is arranged in the upper door, and one station is arranged at the position of each upper door 2; the mode that all stations are transversely arranged in the upper part of the cabinet body 1 is convenient to disassemble for wiring. In the embodiment, a rectangular cabinet body 1 is specifically adopted, an input terminal interface is arranged on the left side surface of the lower part of the cabinet body 1, an output terminal interface 4 of the cabinet body 1 is arranged on the right side surface of the lower part of the cabinet body 1, and the input terminal interface and the output terminal interface 4 respectively comprise a voltage interface for accessing three voltage signal lines, a voltage interface for accessing two current signal lines and a reference interface for accessing one reference line; a plurality of station in this embodiment is four stations, is first station 61, second station 62, third station 63 and fourth station 64 respectively, transversely arranges respectively on 1 upper portion of the cabinet body, all has the overhead door on four stations, is equipped with first door handle on the door, and operating personnel opens the door that corresponds of this station when needing control or detecting which station in the training process, alright control the detection to this station. The control panel 5 is rotatably installed on the upper portion of the cabinet body 1 through a second hinge, a second door handle is arranged on the station, the station can be opened by pulling the second door handle, and the station can be seen and wired.
The control panel 5 comprises a controller, a power switch 51, a capacitive switch 56, an inductive indicator 562, a capacitive indicator 561, a first voltage switch group main switch 521, a second voltage switch group main switch 522, a third voltage switch group main switch 523, a fourth voltage switch group main switch 524, a fifth voltage switch group main switch 525, a sixth voltage switch group main switch 526 and a first current switch group main switch 541, a second current switch group main switch 542, a third current switch group main switch 543, a fourth current switch group main switch 544, a fifth current switch group main switch 545, a sixth current switch group main switch 546, a seventh current switch group main switch 547, an eighth current switch group main switch 548, a ninth current switch group main switch 549, a voltage phase sequence indicator lamp 53, a current phase sequence indicator lamp 55, a current reverse polarity indicator lamp 57, a voltage amplitude display 581, and a current amplitude display 582. The controller comprises a voltage switch group and a current switch group;
the voltage switch groups comprise a first voltage switch group 111, a second voltage switch group, a third voltage switch group 113, a fourth voltage switch group 114, a fifth voltage switch group 115 and a sixth voltage switch group 116;
the first voltage switch group 111, the second voltage switch group, the third voltage switch group 113, the fourth voltage switch group 114, the fifth voltage switch group 115 and the sixth voltage switch group 116 each include a first switch, a fourth switch and a seventh switch;
the current switch groups include a first current switch group 121, a second current switch group 122, a third current switch group 123, a fourth current switch group 124, a fifth current switch group 125, a sixth current switch group 126, a seventh current switch group 127, an eighth current switch group 128 and a ninth current switch group 129;
the first current switch group 121, the second current switch group 122, the third current switch group 123, the fourth current switch group 124, the fifth current switch group 125, the sixth current switch group 126, the seventh current switch group 127, the eighth current switch group 128 and the ninth current switch group 129 respectively comprise a second switch, a third switch, a fifth switch, a sixth switch, an eighth switch and a ninth switch;
the first voltage switch group main switch 521 and the first switch, the fourth switch and the seventh switch in the first voltage switch group 111 are linkage switches;
the third voltage switch group main switch 523 and the first switch, the fourth switch and the seventh switch in the second voltage switch group are linkage switches;
the third voltage switch group main switch 523 and the first switch, the fourth switch and the seventh switch in the third voltage switch group 113 are linkage switches;
the fourth voltage switch group main switch 524 and the first switch, the fourth switch and the seventh switch in the fourth voltage switch group 114 are linked switches;
the fifth voltage switch group main switch 525 and the first switch, the fourth switch and the seventh switch in the fifth voltage switch group 115 are linkage switches;
the sixth voltage switch group main switch 526 and the first switch, the fourth switch and the seventh switch in the sixth voltage switch group 116 are linked switches;
the first current switch group main switch 541 and the second switch, the third switch, the fifth switch, the sixth switch, the eighth switch and the ninth switch in the first current switch group 121 are linkage switches;
the second current switch group main switch 542 and the second switch, the third switch, the fifth switch, the sixth switch, the eighth switch and the ninth switch in the second current switch group 122 are linkage switches;
the third current switch group main switch 543 and the second switch, the third switch, the fifth switch, the sixth switch, the eighth switch and the ninth switch in the third current switch group 123 are linkage switches;
the fourth current switch group main switch 544 and the second switch, the third switch, the fifth switch, the sixth switch, the eighth switch and the ninth switch in the fourth current switch group 124 are linkage switches;
the fifth current switch group main switch 545 and the second switch, the third switch, the fifth switch, the sixth switch, the eighth switch and the ninth switch in the fifth current switch group 125 are linked switches;
the sixth current switch group main switch 546 and the second switch, the third switch, the fifth switch, the sixth switch, the eighth switch and the ninth switch in the sixth current switch group 126 are linkage switches;
the seventh current switch group main switch 547 and the second switch, the third switch, the fifth switch, the sixth switch, the eighth switch and the ninth switch in the seventh current switch group 127 are linked switches;
the eighth current switch group main switch 548 and the second switch, the third switch, the fifth switch, the sixth switch, the eighth switch and the ninth switch in the eighth current switch group 128 are linkage switches;
the ninth current switch group main switch 549 and the second switch, the third switch, the fifth switch, the sixth switch, the eighth switch and the ninth switch in the ninth current switch group 129 are linkage switches;
the voltage phase sequence indicator lamp 53 is used for displaying a voltage phase sequence corresponding to the current first station 61;
the current phase sequence indicator light 55 is used for displaying a current phase sequence corresponding to the current first station 61.
The power signal circuit 7 outputs voltage signals to the voltage regulating circuit 8, the output end of the voltage regulating circuit 8 outputs voltage signals to the wiring control circuit 11 and the isolation voltage regulating circuit 9 respectively, the isolation voltage regulating circuit 9 outputs voltage signals to the load circuit 10, the load circuit 10 converts the voltage signals into current signals to be input to the wiring control circuit 11, and the wiring control circuit 11 outputs the voltage signals and the current signals to each station.
The power signal circuit 7 is used for outputting a voltage signal UAVoltage signal UBSum voltage signal UCThe power signal circuit 7 may be a three-phase power circuit, and the output end outputs a voltage signal UAVoltage signal UBSum voltage signal UC. The power switch 51 is used for controlling the voltage signal U of the power signal circuit 7AVoltage signal UBSum voltage signal UCIs switched on or off with the voltage regulating circuit 8; when the power switch 51 is pressed, the power signal circuit 7 will output the voltage signal UAVoltage signal UBSum voltage signal UCTo the voltage regulating circuit 8.
The voltage regulating circuit 8 is used for regulating the voltage signal U of the input endAVoltage signal UBSum voltage signal UCThe amplitude of the power supply signal circuit 7 is adjusted and isolated; the voltage regulating circuit 8 can isolate the power supply signal circuit 7 of the previous stage from the wiring control circuit 11 and the isolation voltage regulating circuit 9 of the next stage, thereby protecting the power supply signal circuit 7 of the previous stage and the lower stageThe first-stage wiring control circuit 11 and the isolation voltage regulation circuit 9; voltage regulating circuit 8 can adjust the amplitude of the voltage signal of output according to the in-service use condition, has better adaptability, in addition, can promote whole internal circuit system's of cabinet area load capacity through keeping apart voltage regulating circuit 9. The voltage regulating circuit 8 is preferably an in-phase proportional operation circuit.
The voltage signal UAVoltage signal UBSum voltage signal UCThe voltage signal U is input into a wiring control circuit after passing through a voltage regulating circuit 8AVoltage signal UBSum voltage signal UCThe input is to the switch of each voltage switch group.
The voltage signal UAVoltage signal UBSum voltage signal UCThe voltage signals output by the voltage regulating circuit 8 are divided into two paths to be isolated by the isolation voltage regulating circuit 9, wherein one path of voltage signals is input to the load circuit 10, and the other path of voltage signals is input to each voltage switch group of the controller; the isolation voltage-regulating circuit 9 functions as follows: the isolation voltage regulating circuit 9 can enable one of the two circuits to be unaffected when the amplitude of the voltage signal of the other circuit is large, in this embodiment, the amplitude of the voltage signal input to each voltage switch group of the controller is usually large, and the work of the isolation voltage regulating circuit output to the load circuit 10 is not affected; after being isolated by the isolation voltage regulating circuit 9, the voltage signal to be converted into the current signal through the liability circuit is reduced in voltage and then is output to the load circuit 10 after the voltage signal is reduced, so that the voltage signal after voltage reduction can be more safely and reliably converted into the current signal in the load circuit 10, the working condition problem is reduced, and the heating condition is reduced. The isolation voltage regulation circuit 9 is preferably an optical coupling circuit.
The load circuit 10 includes an inductive load and a capacitive load, and the capacitive switch 56 is used for switching the inductive load connected to the load circuit 10 to the capacitive load;
the inductive indicator lamp 562 is used for displaying that the load circuit 10 is connected with an inductive load; the inductive load can be a transformer or a motor and the like;
the capacitive indicator light 561 is used for displaying that the load circuit 10 is connected to a capacitive load; the capacitive load may be a compensation capacitor or the like.
The load circuit 10 is used for receiving a voltage signal UAConverted into a current signal IAVoltage signal UBConverted into a current signal IBVoltage signal UCConverted into a current signal ICAnd the current signal I is converted intoACurrent signal IBAnd a current signal ICInput to each current switch group; the load circuit 10 can also function to adjust the load properties and the current phase, and the load circuit 10 is controlled by a relay.
The first station 61, the second station 62, the third station 63 and the fourth station 64 all include an electric quantity metering device and a reference signal terminal, the electric quantity metering device includes a voltage metering module 6111, a current metering module 6112 and a zero line signal terminal connected to a zero line N, the voltage metering module 6111 includes three voltage signal terminals, the voltage metering module 6111 includes three voltage metering elements, and the three voltage metering elements respectively meter the voltage between two adjacent voltage signal terminals; the current metering module 6112 includes two first current signal terminals, two second current signal terminals, and two third current signal terminals; the current metering module 6112 includes three current metering elements, a first current metering element is connected in series between two first current signal terminals, and is configured to detect currents flowing through the two first current signal terminals; the second current metering element is connected between the two second current signal terminals in series and is used for detecting the current flowing through the two second current signal terminals; the third current metering element is connected in series between the two third current signal terminals and is used for detecting the current of the two third current signal terminals. The reverse polarity of the current refers to the situation that when the three current metering elements are reversely connected, the reverse polarity of the current is measured to be I when the polarity of the first current metering element is reversely connected1When the polarity of the second current metering element is reversed, the reverse polarity of the current is measured as I2When is coming into contact withWhen the polarity of the third current metering element is reversed, the reverse polarity of the current is measured to be I3。
The controller is connected to a voltage signal UAVoltage signal UBVoltage signal UCCurrent signal IACurrent signal IBCurrent signal ICAnd a neutral line N; the controller is used for controlling three voltage signal terminals and a voltage signal U of the first station 61AVoltage signal UBSum voltage signal UCControls the first current signal terminal, the second current signal terminal, the third current signal terminal and the current signal I of the first station 61ACurrent signal IBCurrent signal ICConnecting or disconnecting the zero line N; the first station 61 and the voltage signal U are controlled by the controllerAVoltage signal UBVoltage signal UCCurrent signal IACurrent signal IBCurrent signal ICAnd the zero line N is connected or disconnected, so that an operator can realize the function of the control panel 5, can input a voltage signal, a current signal and the zero line by regulating and controlling a controller on the control panel 5, and can set the examination requirements on the control panel 5 to examine the operation capacity of the operator in the examination process.
The three voltage signal terminals of the first station 61 are connected with the three voltage signal terminals of the second station 62, and the three voltage signal terminals of the first station 61 are connected with a voltage signal UAVoltage signal UBVoltage signal UCIn the order of the three voltage signal terminals of said second station 62 and into the voltage signal UAVoltage signal UBVoltage signal UCIn different order, the reference signal terminal is connected to a voltage signal UAVoltage signal UBVoltage signal UCThe reference signal terminal is grounded or connected to zero;
the first, second and third current signal terminals of the first station 61 and the first and second current signal terminals of the second station 62The current signal terminal is connected with the third current signal terminal, and the first current signal terminal, the second current signal terminal and the third current signal terminal of the first station 61 are connected with a current signal IACurrent signal IBCurrent signal ICThe sequence of the zero line N and the access current signal I of the first current signal terminal, the second current signal terminal and the third current signal terminal of the second station 62ACurrent signal IBCurrent signal ICAnd the zero line N are in different orders.
One of two first current signal terminals, one of two second current signal terminals and one of two third current signal terminals of the first station 61 and the second station 62 is connected to a zero line N, and the other one of the first current signal terminals, the other one of the second current signal terminals and the other one of the third current signal terminals is correspondingly connected to a current signal IACurrent signal IBCurrent signal ICAnd a zero line N.
By connecting the three voltage signal terminals of the first station 61 with the three voltage signal terminals of the second station 62, two different voltage phase sequences can be set. Firstly, when the three voltage signal terminals of the first station 61 are determined to be connected with the three voltage signal terminals of the second station 62, the voltage signal U accessed by changing the three voltage signal terminals of the first station 61AVoltage signal UBSum voltage signal UCThe voltage phase sequence set in the second station 62 can be changed, and six voltage phase sequences can be set by changing the voltage signal sequence accessed by the three voltage signal terminals of the first station 61 for a plurality of times. Second, voltage signal U of first station 61 switched in by controller is determinedAVoltage signal UBSum voltage signal UCBy changing the wiring between the three voltage signal terminals of the first station 61 and the three voltage signal terminals of the second station 62, the voltage phase sequence of the second station 62 can be set as desired, and the three voltage signal terminals of the first station 61 and the three voltage signal terminals of the second station 62 can be connected to each other multiple timesAnd the wiring can set six wiring types with different voltage phase sequences. The operator can set six wiring types with different voltage phase sequences through the two modes, the operation capability of the operator can be improved through the wiring between the three voltage signal terminals of the first station 61 and the three voltage signal terminals of the second station 62, and the situation is completely the same as the actual wiring of the power production field; the checking personnel can also require the voltage signal sequence accessed by the operator to the three voltage signal terminals of the first station 61 to obtain the required voltage phase sequence of the first station 61 and the required voltage phase sequence of the second station 62 according to the actual situation, and can also enable the operator to set the required voltage phase sequence of the second station 62 to the three voltage signal terminals of the first station 61 by determining the voltage sequence accessed by the three voltage signal terminals of the first station 61, and the actual wiring operation capability of the operator is checked in the wiring process, so that whether the operator meets the requirements of field operation can be effectively evaluated.
A first current signal terminal, a second current signal terminal, and a third current signal terminal of the first station 61; by means of a controller and a current signal IACurrent signal IBCurrent signal ICThe phase sequence of the current of the first station 61 and the phase sequence of the current of the second station 62 or the reverse polarity of the current of the first station 61 and the reverse polarity of the current of the second current can be obtained by connecting the first current signal terminal and the second current signal terminal of the first station 61 with the third current signal terminal and the first current signal terminal, the second current signal terminal and the third current signal terminal of the second station 62; changing the sequence of the current signals supplied to the first stations 61 can change the current phase sequence of the first stations 61 and the current phase sequence of the second stations 62 or the current polarity reversal of the first stations 61 and the current polarity reversal of the second stations 62. By determining the sequence of the current signals connected to the first station 61 and changing the connection mode of the first current signal terminal, the second current signal terminal and the third current signal terminal of the first station 61, which are connected with the first current signal terminal, the second current signal terminal and the third current signal terminal of the second station 62, the first station can be changedThe current phase sequence of the station 61 and the current phase sequence of the station 62 or the current reversed polarity of the station 61 and the current reversed polarity of the station 62 can be adjusted by an operator according to the above conditions, six different current phase sequences and three different current reversed polarities can be obtained on the station 61 and the station 62, the voltage phase sequence current reversed polarity can be adjusted by changing the input sequence of the voltage signal and the current signal of the station 61 or the voltage phase sequence current reversed polarity can be adjusted by changing the connection mode between the two stations in the power production field, and the operator can know the two modes in the operation process and can simultaneously perform the connection operation between the station 61 and the station 62; the examiner can set the wiring type between the first station 61 and the second station 62, so that the operator can obtain different wiring types of voltage phase sequence, current phase sequence and current reverse polarity by adjusting the input of the current signal, the voltage signal and the zero line. The method can also determine the current signal, the voltage signal and the signal of the zero line input by the first station 61, and require an operator to wire the first station 61 and the second station 62, so that the wire connection types of the voltage phase sequence, the current phase sequence and the current reversed polarity required by examination can be measured on the second station 62, and the technical problem that the mode of setting the wire connection or fault type of a computer control circuit in the prior art is greatly different from the field work, and the requirements of training and examination of the operator can not be really met is effectively solved.
Wherein the three voltage signal terminals are a first signal terminal, a fourth signal terminal and a seventh signal terminal;
the two first current signal terminals are a second signal terminal and a third signal terminal;
the two second current signal terminals are a fifth signal terminal and a sixth signal terminal;
the two third current signal terminals are an eighth signal terminal and a ninth signal terminal;
the voltage switch group is connected with a voltage signal UAVoltage signalUBAnd a voltage signal, the current switch is connected with a current signal IACurrent signal IBCurrent signal ICA zero line N;
the voltage switch group is used for controlling the connection or disconnection between the first signal terminal 101 of the first station 61 and a voltage signal, controlling the connection or disconnection between the fourth signal terminal 104 of the first station 61 and the voltage signal, and controlling the connection or disconnection between the seventh signal terminal 107 of the first station 61 and the voltage signal;
the current switch set is used for controlling the connection or disconnection between the second signal terminal 102 of the first station 61 and a current signal, controlling the connection or disconnection between the third signal terminal 103 of the first station 61 and the current signal, controlling the connection or disconnection between the fifth signal terminal 105 of the first station 61 and the current signal, controlling the connection or disconnection between the sixth signal terminal 106 of the first station 61 and the current signal, controlling the connection or disconnection between the eighth signal terminal 108 of the first station 61 and the current signal, and controlling the connection or disconnection between the ninth signal terminal 109 of the first station 61 and the current signal.
The voltage switch groups comprise a first voltage switch group 111, a second voltage switch group, a third voltage switch group 113, a fourth voltage switch group 114, a fifth voltage switch group 115 and a sixth voltage switch group 116;
the first voltage switch group 111 is used for controlling the first signal terminal 101 and the voltage signal U of the first station 61AControls the fourth signal terminal 104 of the first station 61 and the voltage signal UBControls the connection or disconnection of the seventh signal terminal 107 of the first station 61 with the voltage signal UCAccess or disconnection of; the main switch 521 of the first voltage switch group 111 is pressed, the switches of the other voltage switch groups are all opened, the switches of the first voltage switch group 111 are closed, the phase sequence of the voltage measured by the first station 61 is abc, and the voltage phase sequence indicator lamp 53 corresponding to the phase sequence of the voltage is on.
The second voltage switch group is used for controlling the first signal terminal 101 and the voltage signal U of the first station 61BTo control the first workerFourth signal terminal 104 of bit 61 and voltage signal UCControls the seventh signal terminal 107 of the first station 61 and the voltage signal UAAccess or disconnection of; the main switch 523 of the third voltage switch group 113 is pressed, the switches of the other voltage switch groups are all opened, the switch of the second voltage switch group is closed, the phase sequence of the voltage measured by the first station 61 is bca, and the voltage phase sequence indicator lamp 53 corresponding to the phase sequence of bca is turned on.
The third voltage switch set 113 is used for controlling the first signal terminal 101 and the voltage signal U of the first station 61CControls the fourth signal terminal 104 of the first station 61 and the voltage signal UAControls the seventh signal terminal 107 of the first station 61 and the voltage signal UBAccess or disconnection of; the main switch 523 of the third voltage switch group 113 is pressed, the switches of the other voltage switch groups are all opened, the switch of the third voltage switch group 113 is closed, the phase sequence of the voltage measured by the first station 61 is cab, and the voltage phase sequence indicator lamp 53 corresponding to the phase sequence of the voltage cab is on.
The fourth voltage switch set 114 of the first station 61 is used for controlling the first signal terminal and the voltage signal UCControls the fourth signal terminal 104 of the first station 61 and the voltage signal UBControls the seventh signal terminal 107 of the first station 61 and the voltage signal UAAccess or disconnection of; the main switch 524 of the fourth voltage switch group 114 is pressed, the switches of the other voltage switch groups are all opened, the switches of the fourth voltage switch group 114 are closed, the phase sequence of the voltage measured by the first station 61 is cba, and the voltage phase sequence indicator lamp 53 corresponding to the phase sequence of the voltage cba is turned on.
The fifth voltage switch set 115 is used for controlling the first signal terminal 101 and the voltage signal U of the first station 61BControls the fourth signal terminal 104 of the first station 61 and the voltage signal UAControls the seventh signal terminal 107 of the first station 61 and the voltage signal UCAccess or disconnection of; the fifth voltage switch set 115 master switch 525 is pressed, the switches of the remaining voltage switch sets are all opened, and the fifth switch is closedAnd when the switch of the switch group 115 is pressed, the voltage phase sequence measured by the first station 61 is bac, and the voltage phase sequence indicator lamp 53 corresponding to the voltage phase sequence bac is turned on.
The sixth voltage switch set 116 is used for controlling the first signal terminal 101 and the voltage signal U of the first station 61AControls the fourth signal terminal 104 of the first station 61 and the voltage signal UCControls the seventh signal terminal 107 of the first station 61 and the voltage signal UBAccess or disconnection. The main switch 526 of the sixth voltage switch group 116 is pressed, the switches of the rest voltage switch groups are all switched off and closed, the switch of the sixth voltage switch group 116 is closed, the voltage phase sequence measured by the first station 61 is acb, and the voltage phase sequence indicator lamp 53 corresponding to the voltage phase sequence is on.
Different voltage phase sequences of the first station 61 can be measured by closing different switch groups, six voltage phase sequences can be obtained by six voltage switch groups, and an operator can learn control modes and wiring modes of the different voltage phase sequences on the first station 61.
Further, a first terminal of the first switch of the first voltage switch group 111, a first terminal of the first switch of the second voltage switch group, a first terminal of the first switch of the third voltage switch group 113, a first terminal of the first switch of the fourth voltage switch group 114, a first terminal of the first switch of the fifth voltage switch group 115, and a first terminal of the first switch of the sixth voltage switch group 116 are connected in series, wherein the first terminal of the first switch of the first voltage switch group 111 is connected to the voltage signal UA；
A first terminal of a fourth switch of the first voltage switch group 111, a first terminal of a fourth switch of the second voltage switch group, a first terminal of a fourth switch of the third voltage switch group 113, a first terminal of a fourth switch of the fourth voltage switch group 114, a first terminal of a fourth switch of the fifth voltage switch group 115 and a first terminal of a fourth switch of the sixth voltage switch group 116 are connected in series, a first terminal of a fourth switch of the first voltage switch group 111 is connected with a voltage signal UB；
First terminal of seventh switch of first voltage switch group 111, first terminal of seventh switch of second voltage switch group, and third terminalA first terminal of a seventh switch of the voltage switch set 113, a first terminal of a seventh switch of the fourth voltage switch set 114, a first terminal of a seventh switch of the fifth voltage switch set 115 and a first terminal of a seventh switch of the sixth voltage switch set 116 are connected in series, a first terminal of a seventh switch of the first voltage switch set 111 is connected with a voltage signal UC；
A second end of the first switch of the first voltage switch group 111, a second end of the fourth switch of the second voltage switch group, a second end of the seventh switch of the third voltage switch group 113, a second end of the seventh switch of the fourth voltage switch group 114, a second end of the fourth switch of the fifth voltage switch group 115 and a second end of the first switch of the sixth voltage switch group 116 are connected through a wire, and a second end of the first switch of the sixth voltage switch group 116 is connected with a first signal terminal;
a second end of a fourth switch of the first voltage switch group 111, a second end of a seventh switch of the second voltage switch group, a second end of a first switch of the third voltage switch group 113, a second end of a fourth switch of the fourth voltage switch group 114, a second end of a first switch of the fifth voltage switch group 115 and a second end of a seventh switch of the sixth voltage switch group 116 are connected through a lead, and a second end of a seventh switch of the sixth voltage switch group 116 is connected to a fourth terminal through a lead;
the second end of the seventh switch of the first voltage switch group 111, the second end of the first switch of the second voltage switch group, the second end of the fourth switch of the third voltage switch group 113, the second end of the first switch of the fourth voltage switch group 114, the second end of the seventh switch of the fifth voltage switch group 115 and the second end of the fourth switch of the sixth voltage switch group 116 are connected through a conducting wire, and the second end of the fourth switch of the sixth voltage switch group 116 and the seventh signal terminal are connected through a conducting wire.
The current switch groups include a first current switch group 121, a second current switch group 122, a third current switch group 123, a fourth current switch group 124, a fifth current switch group 125, a sixth current switch group 126, a seventh current switch group 127, an eighth current switch group 128 and a ninth current switch group 129;
for the first current switch set 121Second signal terminal 102 for controlling first station 61 and voltage signal IAControls the connection or disconnection of the third signal terminal 103 of the first station 61 and the zero line N, and controls the fifth signal terminal 105 of the first station 61 and the current signal IBControls the connection or disconnection of the sixth signal terminal 106 of the first station 61 and the zero line N, and controls the eighth signal terminal 108 of the first station 61 and the current signal ICTo control the connection or disconnection of the ninth signal terminal 109 of the first station 61 with the neutral line N; the main switch 541 of the first current switch group 121 is closed, the switches of the remaining current switch groups are opened, the switches of the first current switch group 121 are closed, the current phase sequence measured by the first station 61 is abc, and the current phase sequence indicator lamp 55 corresponding to the current phase sequence abc is turned on.
The second current switch group 122 is used for controlling the second signal terminal 102 of the first station 61 and the voltage signal IBControls the connection or disconnection of the third signal terminal 103 of the first station 61 and the zero line N, and controls the fifth signal terminal 105 of the first station 61 and the current signal ICControls the connection or disconnection of the sixth signal terminal 106 of the first station 61 and the zero line N, and controls the eighth signal terminal 108 of the first station 61 and the current signal IATo control the connection or disconnection of the ninth signal terminal 109 of the first station 61 with the neutral line N; the main switch 542 of the second current switch group 122 is closed, the switches of the remaining current switch groups are opened, the switches of the second current switch group 122 are closed, the phase sequence of the current measured at the first station 61 is bca, and the current phase sequence indicator light 55 corresponding to the current phase sequence bca is turned on.
The third current switch group 123 is used for controlling the second signal terminal 102 of the first station 61 and the voltage signal ICControls the connection or disconnection of the third signal terminal 103 of the first station 61 and the zero line N, and controls the fifth signal terminal 105 of the first station 61 and the current signal IAControls the connection or disconnection of the sixth signal terminal 106 of the first station 61 and the zero line N, and controls the eighth signal terminal 108 of the first station 61 and the current signal IBTo control the connection or disconnection of the ninth signal terminal 109 of the first station 61 with the neutral line N; and closing a third current switch group main switch 543, disconnecting the switches of the other current switch groups, closing the switch of the third current switch group 123, wherein the current phase sequence measured by the first station 61 is cab, and the current phase sequence indicator lamp 55 corresponding to the current phase sequence cab is on.
The fourth current switch set 124 is used for controlling the second signal terminal 102 of the first station 61 and the voltage signal ICControls the connection or disconnection of the third signal terminal 103 of the first station 61 and the zero line N, and controls the fifth signal terminal 105 of the first station 61 and the current signal IBControls the connection or disconnection of the sixth signal terminal 106 of the first station 61 and the zero line N, and controls the eighth signal terminal 108 of the first station 61 and the current signal IATo control the connection or disconnection of the ninth signal terminal 109 of the first station 61 with the neutral line N; and closing a fourth current switch group main switch 544, opening switches of the other current switch groups, closing the switches of the fourth current switch group 124, wherein the current phase sequence measured by the first station 61 is cba, and a current phase sequence indicator lamp 55 corresponding to the current phase sequence cba is turned on.
The fifth current switch group 125 is used for controlling the second signal terminal 102 of the first station 61 and the voltage signal IBControls the connection or disconnection of the third signal terminal 103 of the first station 61 and the zero line N, and controls the fifth signal terminal 105 of the first station 61 and the current signal IAControls the connection or disconnection of the sixth signal terminal 106 of the first station 61 and the zero line N, and controls the eighth signal terminal 108 of the first station 61 and the current signal ICTo control the connection or disconnection of the ninth signal terminal 109 of the first station 61 with the neutral line N; and closing the main switch 545 of the fifth current switch group, opening switches of the other current switch groups, closing the switch of the fifth current switch group 125, wherein the current phase sequence measured by the first station 61 is bac, and the current phase sequence indicator lamp 55 corresponding to the current phase sequence bac is on.
The sixth current switch set 126 is used for controlling the first station61 and a voltage signal IAControls the connection or disconnection of the third signal terminal 103 of the first station 61 and the zero line N, and controls the fifth signal terminal 105 of the first station 61 and the current signal ICControls the connection or disconnection of the sixth signal terminal 106 of the first station 61 and the zero line N, and controls the eighth signal terminal 108 of the first station 61 and the current signal IBTo control the connection or disconnection of the ninth signal terminal 109 of the first station 61 with the neutral line N; the sixth current switch group main switch 546 is closed, the switches of the remaining current switch groups are opened, the switch of the sixth current switch group 126 is closed, the current phase sequence measured by the first station 61 is acb, and the current phase sequence indicator lamp 55 corresponding to the current phase sequence acb is turned on.
The seventh current switch group 127 is used for controlling the connection or disconnection between the second signal terminal 102 of the first station 61 and the zero line N, and controlling the third signal terminal 103 of the first station 61 and the voltage signal IAControls the fifth signal terminal 105 of the first station 61 and the current signal IBControls the connection or disconnection of the sixth signal terminal 106 of the first station 61 and the zero line N, and controls the eighth signal terminal 108 of the first station 61 and the current signal ICTo control the connection or disconnection of the ninth signal terminal 109 of the first station 61 with the neutral line N; the switch 547 of the seventh current switch group is closed, the switches of the other current switch groups are opened, the switch 127 of the seventh current switch group is closed, and the reverse polarity of the current measured at the first station 61 is I1The current having a reverse polarity I1The corresponding current reverse polarity indicator light 57 is on.
The eighth current switch set 128 is used for controlling the second signal terminal 102 of the first station 61 and the voltage signal IAControls the connection or disconnection of the third signal terminal 103 of the first station 61 and the zero line N, controls the connection or disconnection of the fifth signal terminal 105 of the first station 61 and the zero line N, and controls the sixth signal terminal 106 of the first station 61 and the current signal IBControls the eighth signal terminal 108 of the first station 61 and the current signal ICTo control the connection or disconnection of the ninth signal terminal 109 of the first station 61 with the neutral line N; closing the eighth current switch group main switch 548, opening the switches of the other current switch groups, closing the switches of the eighth current switch group 128, and measuring the reverse polarity of the current with the first station 61 as I2The current having a reverse polarity I2The corresponding current reverse polarity indicator light 57 is on.
The ninth current switch set 129 is used for controlling the second signal terminal 102 of the first station 61 and the voltage signal IAControls the connection or disconnection of the third signal terminal 103 of the first station 61 and the zero line N, and controls the fifth signal terminal 105 of the first station 61 and the current signal IBControls the connection or disconnection of the sixth signal terminal 106 of the first station 61 and the zero line N, controls the connection or disconnection of the eighth signal terminal 108 of the first station 61 and the zero line N, and controls the ninth signal terminal 109 of the first station 61 and the current signal ICAccess or disconnection of; the switch of the ninth current switch group master switch 549 is closed, the switches of the other current switch groups are opened, the switch of the ninth current switch group 129 is closed, and the current measured at the first station 61 has the reverse polarity I3The current having a reverse polarity I3The corresponding current reverse polarity indicator light 57 is on.
Further, a first terminal of a second switch of the first current switch group 121, a first terminal of a second switch of the second current switch group 122, a first terminal of a second switch of the third current switch group 123, a first terminal of a second switch of the fourth current switch group 124, a first terminal of a second switch of the fifth current switch group 125, a first terminal of a second switch of the sixth current switch group 126, a first terminal of a second switch of the seventh current switch group 127, a first terminal of a second switch of the eighth current switch group 128, and a first terminal of a second switch of the ninth current switch group 129 are connected in series, the first terminal of the second switch of the first current switch group 121 is connected to the voltage signal IA；
A first end of a third switch of the first current switch group 121, a first end of a third switch of the second current switch group 122, a first end of a third switch of the third current switch group 123, a first end of a third switch of the fourth current switch group 124, a first end of a third switch of the fifth current switch group 125, a first end of a third switch of the sixth current switch group 126, a first end of a third switch of the seventh current switch group 127, a first end of a third switch of the eighth current switch group 128 and a first end of a third switch of the ninth current switch group 129 are connected in series, and a first end of the third switch of the first current switch group 121 is connected with a zero line N;
a first terminal of a fifth switch of the first current switch group 121, a first terminal of a fifth switch of the second current switch group 122, a first terminal of a fifth switch of the third current switch group 123, a first terminal of a fifth switch of the fourth current switch group 124, a first terminal of a fifth switch of the fifth current switch group 125, a first terminal of a fifth switch of the sixth current switch group 126, a first terminal of a fifth switch of the seventh current switch group 127, a first terminal of a fifth switch of the eighth current switch group 128, and a first terminal of a fifth switch of the ninth current switch group 129 are connected in series, a first terminal of a fifth switch of the first current switch group 121 is connected to the voltage signal IB；
A first end of a sixth switch of the first current switch group 121, a first end of a sixth switch of the second current switch group 122, a first end of a sixth switch of the third current switch group 123, a first end of a sixth switch of the fourth current switch group 124, a first end of a sixth switch of the fifth current switch group 125, a first end of a sixth switch of the sixth current switch group 126, a first end of a sixth switch of the seventh current switch group 127, a first end of a sixth switch of the eighth current switch group 128, and a first end of a sixth switch of the ninth current switch group 129 are connected in series, and a first end of the sixth switch of the first current switch group 121 is connected with a neutral line N;
a first terminal of an eighth switch of the first current switch group 121, a first terminal of an eighth switch of the second current switch group 122, a first terminal of an eighth switch of the third current switch group 123, a first terminal of an eighth switch of the fourth current switch group 124, a first terminal of an eighth switch of the fifth current switch group 125, a first terminal of an eighth switch of the sixth current switch group 126, a first terminal of an eighth switch of the seventh current switch group 127, a first terminal of an eighth switch of the eighth current switch group 128, and a first terminal of an eighth switch of the ninth current switch group 129 are connected in series, the first current switch group 121, the second current switch group 129, the eighth switch groupThe first end of the eight switches is connected with a voltage signal IC；
A first end of a ninth switch of the first current switch group 121, a first end of a ninth switch of the second current switch group 122, a first end of a ninth switch of the third current switch group 123, a first end of a ninth switch of the fourth current switch group 124, a first end of a ninth switch of the fifth current switch group 125, a first end of a ninth switch of the sixth current switch group 126, a first end of a ninth switch of the seventh current switch group 127, a first end of a ninth switch of the eighth current switch group 128 and a first end of a ninth switch of the ninth current switch group 129 are connected in series, and a first end of the ninth switch of the first current switch group 121 is connected with a neutral line N;
a second terminal of the second switch of the first current switch group 121, a second terminal of the fifth switch of the second current switch group 122, a second terminal of the eighth switch of the third current switch group 123, a second terminal of the eighth switch of the fourth current switch group 124, a second terminal of the fifth switch of the fifth current switch group 125, a second terminal of the second switch of the sixth current switch group 126, a second terminal of the third switch of the seventh current switch group 127, a second terminal of the second switch of the eighth current switch group 128, and a second terminal of the second switch of the ninth current switch group 129 are connected through a conducting wire, and a second terminal of the second switch of the ninth current switch group 129 is connected to a second signal terminal;
the second end of the third switch of the first current switch group 121, the second end of the third switch of the second current switch group 122, the second end of the third switch of the third current switch group 123, the second end of the third switch of the fourth current switch group 124, the second end of the third switch of the fifth current switch group 125, the second end of the third switch of the sixth current switch group 126, the second end of the second switch of the seventh current switch group 127, the second end of the third switch of the eighth current switch group 128 and the second end of the third switch of the ninth current switch group 129 are connected through conducting wires, and the second end of the eighth switch of the ninth current switch group 129 is connected with a third signal terminal;
a second end of the fifth switch of the first current switch group 121, a second end of the eighth switch of the second current switch group 122, a second end of the second switch of the third current switch group 123, a second end of the fifth switch of the fourth current switch group 124, a second end of the second switch of the fifth current switch group 125, a second end of the eighth switch of the sixth current switch group 126, a second end of the fifth switch of the seventh current switch group 127, a second end of the sixth switch of the eighth current switch group 128, and a second end of the fifth switch of the ninth current switch group 129 are connected through a conducting wire, and a second end of the fifth switch of the ninth current switch group 129 is connected to a fifth signal terminal;
a second end of the sixth switch of the first current switch group 121, a second end of the sixth switch of the second current switch group 122, a second end of the sixth switch of the third current switch group 123, a second end of the sixth switch of the fourth current switch group 124, a second end of the sixth switch of the fifth current switch group 125, a second end of the sixth switch of the sixth current switch group 126, a second end of the sixth switch of the seventh current switch group 127, a second end of the fifth switch of the eighth current switch group 128, and a second end of the sixth switch of the ninth current switch group 129 are connected through a conducting wire, and a second end of the sixth switch of the ninth current switch group 129 is connected to a sixth signal terminal;
a second end of the eighth switch of the first current switch group 121, a second end of the second switch of the second current switch group 122, a second end of the fifth switch of the third current switch group 123, a second end of the second switch of the fourth current switch group 124, a second end of the eighth switch of the fifth current switch group 125, a second end of the fifth switch of the sixth current switch group 126, a second end of the eighth switch of the seventh current switch group 127, a second end of the eighth switch of the eighth current switch group 128, and a second end of the ninth switch group of the ninth current switch group 129 are connected through a conducting wire, and a second end of the ninth switch of the ninth current switch group 129 and an eighth signal terminal are connected through a conducting wire;
a second end of the ninth switch of the first current switch group 121, a second end of the ninth switch of the second current switch group 122, a second end of the ninth switch of the third current switch group 123, a second end of the ninth switch of the fourth current switch group 124, a second end of the ninth switch of the fifth current switch group 125, a second end of the ninth switch of the sixth current switch group 126, a second end of the ninth switch of the seventh current switch group 127, a second end of the ninth switch of the eighth current switch group 128, and a second end of the eighth switch of the ninth current switch group 129 are connected through conducting wires, and a second end of the eighth switch of the ninth current switch group 129 is connected to the ninth signal terminal.
The sequence of the voltage signals and the sequence of the current signals input into the first station 61 by each voltage switch group and each current switch group can be controlled by a first voltage switch group main switch 521, a second voltage switch group main switch 522, a third voltage switch group main switch 523, a fourth voltage switch group main switch 524, a fifth voltage switch group main switch 525, a sixth voltage switch group main switch 526, a first current switch group main switch 541, a second current switch group main switch 542, a third current switch group main switch 543, a fourth current switch group main switch 544, a fifth current switch group main switch 545, a sixth current switch group main switch 546, a seventh current switch group main switch, an eighth current switch group main switch 548 and a ninth current switch group main switch 549 on the control panel 5, the voltage phase sequence of the first work station 61 can be clearly obtained by the voltage phase sequence indicator lamp 53, the current phase sequence indicator lamp 55 and the current reverse polarity indicator lamp 57. Current phase sequence and current reverse polarity
Wherein, the electric energy metering device 611 of the first station 61 and the electric energy metering device 611 of the second station 62 both further comprise a tenth signal terminal, the tenth signal terminal of the first station 61 is connected to the zero line N, the tenth signal terminal of the first station 61 is connected to the tenth signal terminal of the second station 62, the electric energy metering device 611 is a three-phase four-wire electric energy meter, the electric energy meter comprises ten wiring terminals, the ten wiring terminals are respectively three voltage wiring terminals, two first current wiring terminals, two second current wiring terminals, two third current wiring terminals and a zero line wiring terminal, the three voltage wiring terminals are respectively connected to the first signal terminal, the fourth signal terminal and the seventh signal terminal, the two first current wiring terminal groups are respectively connected to the second signal terminal and the third signal terminal, the second current wiring terminal group is respectively connected to the fifth signal terminal and the sixth signal terminal, the third current wiring terminal is correspondingly connected with the eighth signal terminal and the ninth signal terminal respectively, and the zero line wiring terminal is connected with the tenth signal terminal. Because of carelessness in the installation and wiring processes of the electric energy meter or unclear phase sequence and polarity of a current and voltage line, the electric energy meter is often connected in a wrong way, so that the electric energy meter cannot rotate, rotates reversely or rotates forwards or rotates reversely suddenly, or even if the electric energy meter rotates forwards all the time, metering is wrong. Therefore, during the training process of the operator, the service capacity of the operator can be effectively improved by continuously familiarizing with the wiring and the operation of the control panel 5.
The first station 61 and the second station 62 each further include a joint junction box 612 and a junction box row 613, the junction box row 613 includes a first junction terminal corresponding to the first signal terminal, a second junction terminal corresponding to the second signal terminal, a third junction terminal corresponding to the third signal terminal, a fourth junction terminal corresponding to the fourth signal terminal, a fifth junction terminal corresponding to the fifth signal terminal, a sixth junction terminal corresponding to the sixth signal terminal, a seventh junction terminal corresponding to the seventh signal terminal, an eighth junction terminal corresponding to the eighth signal terminal, a ninth junction terminal corresponding to the ninth signal terminal, a tenth junction terminal corresponding to the tenth signal terminal, and an eleventh connection terminal corresponding to the reference signal terminal, the joint junction box 612 includes at least ten sets of connection terminals and an external module for externally connecting an accessed circuit, each group of connecting terminals is provided with a connecting input terminal and a connecting output terminal which are in one-to-one correspondence, the external module is arranged between the connecting input terminal and the connecting output terminal, and the connecting output terminals of the joint junction box 612 are connected with a first signal terminal, a second signal terminal, a third signal terminal, a fourth signal terminal, a fifth signal terminal, a sixth signal terminal, a seventh signal terminal, an eighth signal terminal, a ninth signal terminal and a tenth signal terminal in one-to-one correspondence; the connection output terminals of the combined junction box 612 are connected with a first connection terminal, a second connection terminal, a third connection terminal, a fourth connection terminal, a fifth connection terminal, a sixth connection terminal, a seventh connection terminal, an eighth connection terminal, a ninth connection terminal and a tenth connection terminal in a one-to-one correspondence manner.
In the process of setting the training cabinet, the combined terminal box 612 may be designed to be connected to the electric energy metering device 611 for protection, and at this time, the first signal terminal, the second signal terminal, the third signal terminal, the fourth signal terminal, the fifth signal terminal, the sixth signal terminal, the seventh signal terminal, the eighth signal terminal, the ninth signal terminal, and the tenth signal terminal among the above are connected to the switches of the current switch groups and the switches of the voltage switch groups, and are actually connected to the switches of the current switch groups and the switches of the voltage switch groups through the first connection terminal, the second connection terminal, the third connection terminal, the fourth connection terminal, the fifth connection terminal, the sixth connection terminal, the seventh connection terminal, the eighth connection terminal, the ninth connection terminal, and the tenth connection terminal of the terminal row 613, and are connected to the switches of the current switch groups and the switches of the voltage switch groups through the combined terminal box 612, and then enter and exit to the first signal terminal box 612, A second signal terminal, a third signal terminal, a fourth signal terminal, a fifth signal terminal, a sixth signal terminal, a seventh signal terminal, an eighth signal terminal, a ninth signal terminal, and a tenth signal terminal. When the training cabinet only needs to meet wiring settings that can be made for various voltage and current phase-sequences and reverse polarity of current, it is directly contemplated that the joint terminal block 612 and the terminal block 613 are not provided, and at this time, the switches of each current switch group and the switches of each voltage switch group are directly connected to the first signal terminal, the second signal terminal, the third signal terminal, the fourth signal terminal, the fifth signal terminal, the sixth signal terminal, the seventh signal terminal, the eighth signal terminal, the ninth signal terminal and the tenth signal terminal, and the connection among the stations can be directly realized by connecting the first signal terminal, the second signal terminal, the third signal terminal, the fourth signal terminal, the fifth signal terminal, the sixth signal terminal, the seventh signal terminal, the eighth signal terminal, the ninth signal terminal and the tenth signal terminal between two stations.
The combined junction box 612 has the effects that in an electric power system, when the electric energy meter is replaced or maintained, due to the fact that the three-phase circuit cannot be directly powered off, the electric energy meter is replaced and maintained under the condition that the three-phase circuit is not powered off through the transfer switch or the external module in the combined junction box 61252, the combined junction box 612 is arranged in a training box, the replacement condition of the electric energy meter can be simulated in a corresponding field more truly, an operator can conveniently and quickly know the combined junction box 612, and the simulated maintenance can be carried out on the field truly and specifically.
The training cabinet further comprises a third station 63 and a fourth station 64, the third station 63, the fourth station 64 and the first station 61 are the same, the first signal terminal 101 of the first station 61, the fourth signal terminal of the second station 62, the seventh signal terminal of the third station 63 and the seventh signal terminal of the fourth station 64 are connected in series, the fourth signal terminal 104 of the first station 61, the first signal terminal of the second station 62, the first signal terminal of the third station 63 and the fourth signal terminal of the fourth station 64 are connected in series, and the seventh signal terminal 107 of the first station 61, the seventh signal terminal of the second station 62, the fourth signal terminal of the third station 63 and the first signal terminal of the fourth station 64 are connected in series;
the second signal terminal 102 of the first station 61, the fifth signal terminal of the second station 62, the eighth signal terminal of the third station 63, and the eighth signal terminal of the fourth station 64 are connected in series, the third signal terminal 103 of the first station 61, the sixth signal terminal of the second station 62, the ninth signal terminal of the third station 63, and the ninth signal terminal of the fourth station 64 are connected in series, the fifth signal terminal 105 of the first station 61, the second signal terminal of the second station 62, the second signal terminal of the third station 63, and the eighth signal terminal of the fourth station 64 are connected in series, the sixth signal terminal 106 of the first station 61, the third signal terminal of the second station 62, the third signal terminal of the third station 63, and the ninth signal terminal of the fourth station 64 are connected in series, the eighth signal terminal 108 of the first station 61, the eighth signal terminal of the second station 62, the fifth signal terminal of the third station 63, and the second signal terminal of the fourth station 64 are connected in series, the ninth signal terminal 109 of the first station 61, the ninth signal terminal of the second station 62, the sixth signal terminal of the third station 63, and the third signal terminal of the fourth station 64 are connected in series;
the tenth signal terminal of the first station 61, the tenth signal terminal of the second station 62, the tenth signal terminal of the third station 63, and the tenth signal terminal of the fourth station 64 are connected in series;
the reference signal terminal of the first station 61, the reference signal terminal of the second station 62, the reference signal terminal of the third station 63, and the reference signal terminal of the fourth station 64 are connected in series.
The voltage signal U is transmitted by a controllerAVoltage signal UBVoltage signal UCCurrent signal IACurrent signal IBCurrent signal ICAnd the zero line N is connected to the first station 61, and the electric energy metering devices 611 of the second station 62, the third station 63 and the fourth station 64 can directly measure corresponding voltage phase sequence and current phase sequence or current reverse polarity respectively.
In addition, the voltage signal U can be transmitted by the controllerAVoltage signal UBVoltage signal UCCurrent signal IACurrent signal IBCurrent signal ICAnd a zero line N is connected to the first station 61, no connection is made among the first station 61, the second station 62, the third station 63 and the fourth station 64, and an inspector can set a voltage phase sequence abc and a current phase sequence abc of the first station 61, and require that an operator make a preset voltage phase sequence measured by the second station 62, the third station 63 and the fourth station 64 through connection, for example, the voltage phase sequence of the second station 62 is bac and the current phase sequence is cad, the voltage phase sequence of the third station 63 is bca and the current phase sequence is cba, the voltage phase sequence of the fourth station 64 is acb and the current phase sequence is cba.
The plurality of stations can also be six stations, and six different voltage phase sequence wiring types or six different current phase sequence wiring types and three different current reversed polarity wiring types can be set by wiring adjacent stations.
The two training cabinets can also be connected in series, namely, the last station of the first training cabinet is connected with each group of voltage switch group, current switch group, tenth signal terminal and reference signal terminal of the second training cabinet.
The voltage amplitude display 581 is electrically connected to the voltage metering device of the first station 61, and is configured to display the amplitude measured by the voltage metering module 6111 of the first station 61;
the current amplitude display 582 is electrically connected to the current metering device of the first station 61, and is configured to display the amplitude measured by the current metering module 6112 of the first station 61.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. A series-connection type low-voltage three-phase four-wire electric energy metering simulation wiring training cabinet is characterized by comprising a control panel, a first station and a second station, wherein the control panel comprises a controller, the first station and the second station respectively comprise an electric quantity metering device and a reference signal terminal, the electric quantity metering device comprises a voltage metering module, a current metering module and a zero line signal terminal connected with a zero line N, the voltage metering module comprises three voltage signal terminals, and the current metering module comprises two first current signal terminals, two second current signal terminals and two third current signal terminals;
the controller is connected to a voltage signal UAVoltage signal UBVoltage signal UCCurrent signal IACurrent signal IBCurrent signal ICAnd a neutral line N; the controller is used for controlling three voltage signal terminals and a voltage signal U of the first stationAVoltage signal UBSum voltage signal UCControls the first current signal terminal, the second current signal terminal, the third current signal terminal and the current signal I of the first stationACurrent signal IBCurrent ofSignal ICConnecting or disconnecting the zero line N;
the three voltage signal terminals of the first station are connected with the three voltage signal terminals of the second station, and the three voltage signal terminals of the first station are connected with a voltage signal UAVoltage signal UBVoltage signal UCAnd the three voltage signal terminals of the second station are connected with a voltage signal UAVoltage signal UBVoltage signal UCIn different order, the reference signal terminal is connected to a voltage signal UAVoltage signal UBVoltage signal UCThe reference signal terminal is grounded or zero;
the first current signal terminal, the second current signal terminal and the third current signal terminal of the first station are connected with the first current signal terminal, the second current signal terminal and the third current signal terminal of the second station, and the first current signal terminal, the second current signal terminal and the third current signal terminal of the first station are connected with a current signal IACurrent signal IBCurrent signal ICThe sequence of the zero line N and the access current signals I of the first current signal terminal, the second current signal terminal and the third current signal terminal of the second stationACurrent signal IBCurrent signal ICThe sequence of the zero line N is different;
one first current signal terminal, one second current signal terminal and one third current signal terminal of the two first current signal terminals, the two second current signal terminals and the two third current signal terminals of the first station and the second station are connected to a zero line N, and the other first current signal terminal, the other second current signal terminal and the other third current signal terminal are correspondingly connected to a current signal IACurrent signal IBCurrent signal ICAnd a zero line N.
2. The series-connection type low-voltage three-phase four-wire electric energy metering simulation wiring training cabinet as claimed in claim 1,
the three voltage signal terminals are a first signal terminal, a fourth signal terminal and a seventh signal terminal;
the two first current signal terminals are a second signal terminal and a third signal terminal;
the two second current signal terminals are a fifth signal terminal and a sixth signal terminal;
the two third current signal terminals are an eighth signal terminal and a ninth signal terminal;
the controller comprises a voltage switch group and a current switch group, wherein the voltage switch group is connected with a voltage signal UAVoltage signal UBAnd a voltage signal, the current switch is connected with a current signal IACurrent signal IBCurrent signal ICA zero line N;
the voltage switch group is used for controlling the connection or disconnection between a first signal terminal of the first station and a voltage signal, controlling the connection or disconnection between a fourth signal terminal of the first station and the voltage signal, and controlling the connection or disconnection between a seventh signal terminal of the first station and the voltage signal;
the current switch group is used for controlling the connection or disconnection between the second signal terminal of the first station and a current signal, controlling the connection or disconnection between the third signal terminal of the first station and the current signal, controlling the connection or disconnection between the fifth signal terminal of the first station and the current signal, controlling the connection or disconnection between the sixth signal terminal of the first station and the current signal, controlling the connection or disconnection between the eighth signal terminal of the first station and the current signal, and controlling the connection or disconnection between the ninth signal terminal of the first station and the current signal.
3. The series-type low-voltage three-phase four-wire electric energy metering simulation wiring training cabinet as claimed in claim 2, wherein the voltage switch groups comprise a first voltage switch group, a second voltage switch group, a third voltage switch group, a fourth voltage switch group, a fifth voltage switch group and a sixth voltage switch group;
for the first voltage switch groupA first signal terminal for controlling the first station and a voltage signal UAControls the fourth signal terminal of the first station and the voltage signal UBA seventh signal terminal for switching on or off and controlling the first station and a voltage signal UCAccess or disconnection of;
the second voltage switch group is used for controlling a first signal terminal and a voltage signal U of a first stationBControls the fourth signal terminal of the first station and the voltage signal UCControls the seventh signal terminal of the first station and the voltage signal UAAccess or disconnection of;
the third voltage switch group is used for controlling the first signal terminal and the voltage signal U of the first stationCControls the fourth signal terminal of the first station and the voltage signal UAControls the seventh signal terminal of the first station and the voltage signal UBAccess or disconnection of;
the fourth voltage switch group is used for controlling a first signal terminal and a voltage signal U of a first stationCControls the fourth signal terminal of the first station and the voltage signal UBControls the seventh signal terminal of the first station and the voltage signal UAAccess or disconnection of;
the fifth voltage switch group is used for controlling the first signal terminal and the voltage signal U of the first stationBControls the fourth signal terminal of the first station and the voltage signal UAControls the seventh signal terminal of the first station and the voltage signal UCAccess or disconnection of;
the sixth voltage switch group is used for controlling the first signal terminal and the voltage signal U of the first stationAControls the fourth signal terminal of the first station and the voltage signal UCControls the seventh signal terminal of the first station and the voltage signal UBAccess or disconnection.
4. The series-type low-voltage three-phase four-wire electric energy metering simulation wiring training cabinet as claimed in claim 3, wherein the first voltage switch group, the second voltage switch group, the third voltage switch group, the fourth voltage switch group, the fifth voltage switch group and the sixth voltage switch group each comprise a first switch, a fourth switch and a seventh switch;
the first end of the first switch of the first voltage switch group, the first end of the first switch of the second voltage switch group, the first end of the first switch of the third voltage switch group, the first end of the first switch of the fourth voltage switch group, the first end of the first switch of the fifth voltage switch group and the first end of the first switch of the sixth voltage switch group are connected in series, the first end of the first switch of the first voltage switch group is connected with a voltage signal UA；
The first end of the fourth switch of the first voltage switch group, the first end of the fourth switch of the second voltage switch group, the first end of the fourth switch of the third voltage switch group, the first end of the fourth switch of the fourth voltage switch group, the first end of the fourth switch of the fifth voltage switch group and the first end of the fourth switch of the sixth voltage switch group are connected in series, and the first end of the fourth switch of the first voltage switch group is connected with a voltage signal UB；
The first end of the seventh switch of the first voltage switch group, the first end of the seventh switch of the second voltage switch group, the first end of the seventh switch of the third voltage switch group, the first end of the seventh switch of the fourth voltage switch group, the first end of the seventh switch of the fifth voltage switch group and the first end of the seventh switch of the sixth voltage switch group are connected in series, and the first end of the seventh switch of the first voltage switch group is connected with a voltage signal UC；
The second end of the first switch of the first voltage switch group, the second end of the fourth switch of the second voltage switch group, the second end of the seventh switch of the third voltage switch group, the second end of the seventh switch of the fourth voltage switch group, the second end of the fourth switch of the fifth voltage switch group and the second end of the first switch of the sixth voltage switch group are connected through leads, and the second end of the first switch of the sixth voltage switch group is connected with the first signal terminal through a lead;
the second end of the fourth switch of the first voltage switch group, the second end of the seventh switch of the second voltage switch group, the second end of the first switch of the third voltage switch group, the second end of the fourth switch of the fourth voltage switch group, the second end of the first switch of the fifth voltage switch group and the second end of the seventh switch of the sixth voltage switch group are connected through leads, and the second end of the seventh switch of the sixth voltage switch group is connected with the fourth signal terminal through a lead;
the second end of the seventh switch of the first voltage switch group, the second end of the first switch of the second voltage switch group, the second end of the fourth switch of the third voltage switch group, the second end of the first switch of the fourth voltage switch group, the second end of the seventh switch of the fifth voltage switch group and the second end of the fourth switch of the sixth voltage switch group are connected through a lead, and the second end of the fourth switch of the sixth voltage switch group and the seventh signal terminal are connected through a lead.
5. The series low-voltage three-phase four-wire power metering simulation wiring training cabinet as claimed in claim 4, wherein the current switch groups comprise a first current switch group, a second current switch group, a third current switch group, a fourth current switch group, a fifth current switch group, a sixth current switch group, a seventh current switch group, an eighth current switch group and a ninth current switch group;
the first current switch group is used for controlling a second signal terminal of a first station and a voltage signal IAThe third signal terminal of the first station and the zero line N are controlled to be connected or disconnected, and the fifth signal terminal of the first station and the current signal I are controlledBThe sixth signal terminal of the first station and the zero line N are controlled to be connected or disconnected, and the eighth signal terminal of the first station and the current signal I are controlledCThe ninth signal terminal of the first station and the zero line N are controlled to be connected or disconnected;
the second current switch group is used for controlling a second signal terminal of the first station and a voltage signal IBThe third signal terminal of the first station and the zero line N are controlled to be connected or disconnected, and the fifth signal terminal of the first station and the electricity are controlledStream signal ICThe sixth signal terminal of the first station and the zero line N are controlled to be connected or disconnected, and the eighth signal terminal of the first station and the current signal I are controlledAThe ninth signal terminal of the first station and the zero line N are controlled to be connected or disconnected;
the third current switch group is used for controlling the second signal terminal of the first station and the voltage signal ICThe third signal terminal of the first station and the zero line N are controlled to be connected or disconnected, and the fifth signal terminal of the first station and the current signal I are controlledAThe sixth signal terminal of the first station and the zero line N are controlled to be connected or disconnected, and the eighth signal terminal of the first station and the current signal I are controlledBThe ninth signal terminal of the first station and the zero line N are controlled to be connected or disconnected;
the fourth current switch group is used for controlling the second signal terminal of the first station and the voltage signal ICThe third signal terminal of the first station and the zero line N are controlled to be connected or disconnected, and the fifth signal terminal of the first station and the current signal I are controlledBThe sixth signal terminal of the first station and the zero line N are controlled to be connected or disconnected, and the eighth signal terminal of the first station and the current signal I are controlledAThe ninth signal terminal of the first station and the zero line N are controlled to be connected or disconnected;
the fifth current switch group is used for controlling the second signal terminal of the first station and the voltage signal IBThe third signal terminal of the first station and the zero line N are controlled to be connected or disconnected, and the fifth signal terminal of the first station and the current signal I are controlledAThe sixth signal terminal of the first station and the zero line N are controlled to be connected or disconnected, and the eighth signal terminal of the first station and the current signal I are controlledCThe ninth signal terminal of the first station and the zero line N are controlled to be connected or disconnected;
the sixth current switch group is used for controlling the second signal terminal of the first station and the voltage signal IAThe connection or disconnection of the mobile station to or from the mobile station,the connection or disconnection of the third signal terminal of the first station and the zero line N is controlled, and the connection of the fifth signal terminal of the first station and the current signal I is controlledCThe sixth signal terminal of the first station and the zero line N are controlled to be connected or disconnected, and the eighth signal terminal of the first station and the current signal I are controlledBThe ninth signal terminal of the first station and the zero line N are controlled to be connected or disconnected;
the seventh current switch group is used for controlling the connection or disconnection of the second signal terminal of the first station and the zero line N and controlling the third signal terminal of the first station and the voltage signal IAControls the fifth signal terminal of the first station and the current signal IBThe sixth signal terminal of the first station and the zero line N are controlled to be connected or disconnected, and the eighth signal terminal of the first station and the current signal I are controlledCThe ninth signal terminal of the first station and the zero line N are controlled to be connected or disconnected;
the eighth current switch group is used for controlling the second signal terminal of the first station and the voltage signal IAThe third signal terminal of the first station and the zero line N are controlled to be connected or disconnected, the fifth signal terminal of the first station and the zero line N are controlled to be connected or disconnected, and the sixth signal terminal of the first station and the current signal I are controlled to be connected or disconnectedBControls the eighth signal terminal of the first station and the current signal ICThe ninth signal terminal of the first station and the zero line N are controlled to be connected or disconnected;
the ninth current switch group is used for controlling the second signal terminal of the first station and the voltage signal IAThe third signal terminal of the first station and the zero line N are controlled to be connected or disconnected, and the fifth signal terminal of the first station and the current signal I are controlledBThe sixth signal terminal of the first station and the zero line N are controlled to be connected or disconnected, the eighth signal terminal of the first station and the zero line N are controlled to be connected or disconnected, and the ninth signal terminal of the first station and the current signal I are controlled to be connected or disconnectedCAccess or disconnection.
6. The series-type low-voltage three-phase four-wire electric energy metering simulation wiring training cabinet as claimed in claim 5, wherein the first current switch group, the second current switch group, the third current switch group, the fourth current switch group, the fifth current switch group, the sixth current switch group, the seventh current switch group, the eighth current switch group and the ninth current switch group each comprise a second switch, a third switch, a fifth switch, a sixth switch, an eighth switch and a ninth switch;
the first end of the second switch of the first current switch group, the first end of the second switch of the second current switch group, the first end of the second switch of the third current switch group, the first end of the second switch of the fourth current switch group, the first end of the second switch of the fifth current switch group, the first end of the second switch of the sixth current switch group, the first end of the second switch of the seventh current switch group, the first end of the second switch of the eighth current switch group and the first end of the second switch of the ninth current switch group are connected in series, the first end of the second switch of the first current switch group is connected with a voltage signal IA；
The first end of a third switch of the first current switch group, the first end of a third switch of the second current switch group, the first end of a third switch of the third current switch group, the first end of a third switch of the fourth current switch group, the first end of a third switch of the fifth current switch group, the first end of a third switch of the sixth current switch group, the first end of a third switch of the seventh current switch group, the first end of a third switch of the eighth current switch group and the first end of a third switch of the ninth current switch group are connected in series, and the first end of the third switch of the first current switch group is connected with a zero line N;
a first end of a fifth switch of the first current switch group, a first end of a fifth switch of the second current switch group, a first end of a fifth switch of the third current switch group, a first end of a fifth switch of the fourth current switch group, a first end of a fifth switch of the fifth current switch group, a first end of a fifth switch of the sixth current switch group, a first end of a fifth switch of the seventh current switch group, a first end of a fifth switch of the eighth current switch group, and a first end of a fifth switch of the ninth current switch groupThe ends are connected in series, and the first end of the fifth switch of the first current switch group is connected with a voltage signal IB；
The first end of a sixth switch of the first current switch group, the first end of a sixth switch of the second current switch group, the first end of a sixth switch of the third current switch group, the first end of a sixth switch of the fourth current switch group, the first end of a sixth switch of the fifth current switch group, the first end of a sixth switch of the sixth current switch group, the first end of a sixth switch of the seventh current switch group, the first end of a sixth switch of the eighth current switch group and the first end of a sixth switch of the ninth current switch group are connected in series, and the first end of the sixth switch of the first current switch group is connected with a zero line N;
the first end of the eighth switch of the first current switch group, the first end of the eighth switch of the second current switch group, the first end of the eighth switch of the third current switch group, the first end of the eighth switch of the fourth current switch group, the first end of the eighth switch of the fifth current switch group, the first end of the eighth switch of the sixth current switch group, the first end of the eighth switch of the seventh current switch group, the first end of the eighth switch of the eighth current switch group and the first end of the eighth switch of the ninth current switch group are connected in series, and the first end of the eighth switch of the first current switch group is connected with a voltage signal IC；
The first end of a ninth switch of the first current switch group, the first end of a ninth switch of the second current switch group, the first end of a ninth switch of the third current switch group, the first end of a ninth switch of the fourth current switch group, the first end of a ninth switch of the fifth current switch group, the first end of a ninth switch of the sixth current switch group, the first end of a ninth switch of the seventh current switch group, the first end of a ninth switch of the eighth current switch group and the first end of a ninth switch of the ninth current switch group are connected in series, and the first end of the ninth switch of the first current switch group is connected with a zero line N;
the second end of the second switch of the first current switch group, the second end of the fifth switch of the second current switch group, the second end of the eighth switch of the third current switch group, the second end of the eighth switch of the fourth current switch group, the second end of the fifth switch of the fifth current switch group, the second end of the second switch of the sixth current switch group, the second end of the third switch of the seventh current switch group, the second end of the second switch of the eighth current switch group and the second end of the second switch of the ninth current switch group are connected through a conducting wire, and the second end of the second switch of the ninth current switch group is connected with a second signal terminal;
the second end of the third switch of the first current switch group, the second end of the third switch of the second current switch group, the second end of the third switch of the third current switch group, the second end of the third switch of the fourth current switch group, the second end of the third switch of the fifth current switch group, the second end of the third switch of the sixth current switch group, the second end of the second switch of the seventh current switch group, the second end of the third switch of the eighth current switch group and the second end of the third switch of the ninth current switch group are connected through a conducting wire, and the second end of the third switch of the ninth current switch group is connected with a third signal terminal;
the second end of the fifth switch of the first current switch group, the second end of the eighth switch of the second current switch group, the second end of the second switch of the third current switch group, the second end of the fifth switch of the fourth current switch group, the second end of the second switch of the fifth current switch group, the second end of the eighth switch of the sixth current switch group, the second end of the fifth switch of the seventh current switch group, the second end of the sixth switch of the eighth current switch group and the second end of the fifth switch of the ninth current switch group are connected through a conducting wire, and the second end of the fifth switch of the ninth current switch group is connected with a fifth signal terminal;
the second end of the sixth switch of the first current switch group, the second end of the sixth switch of the second current switch group, the second end of the sixth switch of the third current switch group, the second end of the sixth switch of the fourth current switch group, the second end of the sixth switch of the fifth current switch group, the second end of the sixth switch of the sixth current switch group, the second end of the sixth switch of the seventh current switch group, the second end of the fifth switch of the eighth current switch group and the second end of the sixth switch of the ninth current switch group are connected through a conducting wire, and the second end of the sixth switch of the ninth current switch group is connected with a sixth signal terminal;
the second end of the eighth switch of the first current switch group, the second end of the second switch of the second current switch group, the second end of the fifth switch of the third current switch group, the second end of the second switch of the fourth current switch group, the second end of the eighth switch of the fifth current switch group, the second end of the fifth switch of the sixth current switch group, the second end of the eighth switch of the seventh current switch group, the second end of the eighth switch of the eighth current switch group and the second end of the ninth switch of the ninth current switch group are connected through a conducting wire, and the second end of the ninth switch of the ninth current switch group is connected with an eighth signal terminal;
the second end of the ninth switch of the first current switch group, the second end of the ninth switch of the second current switch group, the second end of the ninth switch of the third current switch group, the second end of the ninth switch of the fourth current switch group, the second end of the ninth switch of the fifth current switch group, the second end of the ninth switch of the sixth current switch group, the second end of the ninth switch of the seventh current switch group, the second end of the ninth switch of the eighth current switch group and the second end of the eighth switch of the ninth current switch group are connected through a conducting wire, and the second end of the eighth switch of the ninth current switch group is connected with a ninth signal terminal.
7. The series-connection type low-voltage three-phase four-wire electric energy metering simulation wiring training cabinet as claimed in claim 6, wherein the electric energy metering device of the first station and the electric energy metering device of the second station both further comprise a tenth signal terminal, the tenth signal terminal of the first station is connected to a zero wire N, the tenth signal terminal of the first station is connected to the tenth signal terminal of the second station, the electric energy metering device is a three-phase four-wire electric energy meter, the electric energy meter comprises ten wiring terminals, the ten wiring terminals are respectively three voltage wiring terminals, two first current wiring terminals, two second current wiring terminals, two third current wiring terminals and a zero wire wiring terminal, the three voltage wiring terminals are respectively connected to a first signal terminal, a fourth signal terminal and a seventh signal terminal, the two first current wiring terminal groups are correspondingly connected to a second signal terminal and a third signal terminal respectively, the second current wiring terminal group is correspondingly connected with a fifth signal terminal and a sixth signal terminal respectively, the third current wiring terminal is correspondingly connected with an eighth signal terminal and a ninth signal terminal respectively, and the zero line wiring terminal is connected with a tenth signal terminal.
8. The series-type low-voltage three-phase four-wire electric energy metering simulation wiring training cabinet as claimed in claim 7, wherein the first station and the second station each further comprise a joint terminal box and a terminal block, the terminal block comprises a first terminal corresponding to the first signal terminal, a second terminal corresponding to the second signal terminal, a third terminal corresponding to the third signal terminal, and a fourth terminal corresponding to the fourth signal terminal, a fifth terminal corresponding to the fifth signal terminal, a sixth terminal corresponding to the sixth signal terminal, a seventh terminal corresponding to the seventh signal terminal, an eighth terminal corresponding to the eighth signal terminal, a ninth terminal corresponding to the ninth signal terminal, a tenth terminal corresponding to the tenth signal terminal, and an eleventh terminal corresponding to the reference signal terminal, the joint terminal box comprises at least ten groups of connecting terminals and an external connecting terminal for externally connecting an accessed circuit The external module is arranged between the connection input terminal and the connection output terminal, and the connection output terminal of the combined junction box is connected with a first signal terminal, a second signal terminal, a third signal terminal, a fourth signal terminal, a fifth signal terminal, a sixth signal terminal, a seventh signal terminal, an eighth signal terminal, a ninth signal terminal and a tenth signal terminal in a one-to-one correspondence manner; and the connection output terminals of the combined junction box are connected with a first connecting terminal, a second connecting terminal, a third connecting terminal, a fourth connecting terminal, a fifth connecting terminal, a sixth connecting terminal, a seventh connecting terminal, an eighth connecting terminal, a ninth connecting terminal and a tenth connecting terminal in a one-to-one correspondence manner.
9. The series-type low-voltage three-phase four-wire electric energy metering simulation wiring training cabinet as claimed in claim 8, further comprising a third station and a fourth station, wherein the third station, the fourth station and the first station are the same, the first signal terminal of the first station, the fourth signal terminal of the second station, the seventh signal terminal of the third station and the seventh signal terminal of the fourth station are connected in series, the fourth signal terminal of the first station, the first signal terminal of the second station, the first signal terminal of the third station and the fourth signal terminal of the fourth station are connected in series, and the seventh signal terminal of the first station, the seventh signal terminal of the second station, the fourth signal terminal of the third station and the first signal terminal of the fourth station are connected in series;
the second signal terminal of the first station, the fifth signal terminal of the second station, the eighth signal terminal of the third station and the eighth signal terminal of the fourth station are connected in series, the third signal terminal of the first station,
A sixth signal terminal of the second station, a ninth signal terminal of the third station and a ninth signal terminal of the fourth station are connected in series, a fifth signal terminal of the first station, a second signal terminal of the second station, a second signal terminal of the third station and an eighth signal terminal of the fourth station are connected in series, a sixth signal terminal of the first station, a third signal terminal of the second station, a third signal terminal of the third station and a ninth signal terminal of the fourth station are connected in series, an eighth signal terminal of the first station, an eighth signal terminal of the second station, a fifth signal terminal of the third station and a second signal terminal of the fourth station are connected in series, and a ninth signal terminal of the first station, a ninth signal terminal of the second station, a sixth signal terminal of the third station and a third signal terminal of the fourth station are connected in series;
the tenth signal terminal of the first station, the tenth signal terminal of the second station, the tenth signal terminal of the third station and the tenth signal terminal of the fourth station are connected in series;
the reference signal terminal of the first station, the reference signal terminal of the second station, the reference signal terminal of the third station and the reference signal terminal of the fourth station are connected in series.
10. The series-type low-voltage three-phase four-wire electric energy metering simulation wiring training cabinet as claimed in claim 9, wherein the training cabinet further comprises a power signal circuit, a voltage regulating circuit, an isolation voltage regulating circuit and a load circuit; the control panel further comprises a power switch, a capacitive switch, an inductive indicator light, a capacitive indicator light, a first voltage switch group main switch, a second voltage switch group main switch, a third voltage switch group main switch, a fourth voltage switch group main switch, a fifth voltage switch group main switch, a sixth voltage switch group main switch, a first current switch group main switch, a second current switch group main switch, a third current switch group main switch, a fourth current switch group main switch, a fifth current switch group main switch, a sixth current switch group main switch, a seventh current switch group main switch, an eighth current switch group main switch, a ninth current switch group main switch, a voltage phase sequence indicator light, a current reverse polarity indicator light, a voltage amplitude display and a current amplitude display;
the power switch is used for controlling the voltage signal U of the power signal circuitAVoltage signal UBSum voltage signal UCIs connected or disconnected with the voltage regulating circuit;
the voltage regulating circuit is used for regulating a voltage signal U of an input endAVoltage signal UBSum voltage signal UCThe amplitude of the power supply signal circuit is adjusted and isolated;
the isolation voltage regulating circuit is used for isolating the voltage signal output by the voltage regulating circuit into two paths, wherein one path of voltage signal is input to the load circuit, and the other path of voltage signal is input to each voltage switch group of the controller;
the load circuit comprises an inductive load and a capacitive load, and the capacitive switch is used for switching the inductive load connected to the load circuit to the capacitive load;
the inductive indicator light is used for displaying that the load circuit is connected with an inductive load;
the capacitive indicator light is used for displaying that the load circuit is connected with the capacitive load;
the load circuit is used for connectingIncoming voltage signal UAConverted into a current signal IAVoltage signal UBConverted into a current signal IBVoltage signal UCConverted into a current signal ICAnd the current signal I is converted intoACurrent signal IBAnd a current signal ICInput to each current switch group;
the first voltage switch group main switch and a first switch, a fourth switch and a seventh switch in the first voltage switch group are linkage switches;
the second voltage switch group main switch and a first switch, a fourth switch and a seventh switch in the second voltage switch group are linkage switches;
the main switch of the third voltage switch group and the first switch, the fourth switch and the seventh switch in the third voltage switch group are linkage switches;
the fourth voltage switch group main switch and a first switch, a fourth switch and a seventh switch in the fourth voltage switch group are linkage switches;
the main switch of the fifth voltage switch group and a first switch, a fourth switch and a seventh switch in the fifth voltage switch group are linkage switches;
the sixth voltage switch group main switch and a first switch, a fourth switch and a seventh switch in the sixth voltage switch group are linkage switches;
the first current switch group main switch and a second switch, a third switch, a fifth switch, a sixth switch, an eighth switch and a ninth switch in the first current switch group are linkage switches;
the second current switch group main switch and a second switch, a third switch, a fifth switch, a sixth switch, an eighth switch and a ninth switch in the second current switch group are linkage switches;
the main switch of the third current switch group and a second switch, a third switch, a fifth switch, a sixth switch, an eighth switch and a ninth switch in the third current switch group are linkage switches;
the fourth current switch group main switch and a second switch, a third switch, a fifth switch, a sixth switch, an eighth switch and a ninth switch in the fourth current switch group are linkage switches;
the main switch of the fifth current switch group and a second switch, a third switch, a fifth switch, a sixth switch, an eighth switch and a ninth switch in the fifth current switch group are linkage switches;
the sixth current switch group main switch and a second switch, a third switch, a fifth switch, a sixth switch, an eighth switch and a ninth switch in the sixth current switch group are linkage switches;
the seventh current switch group main switch and a second switch, a third switch, a fifth switch, a sixth switch, an eighth switch and a ninth switch in the seventh current switch group are linkage switches;
the eighth current switch group main switch and a second switch, a third switch, a fifth switch, a sixth switch, an eighth switch and a ninth switch in the eighth current switch group are linkage switches;
the ninth current switch group main switch and a second switch, a third switch, a fifth switch, a sixth switch, an eighth switch and a ninth switch in the ninth current switch group are linkage switches;
the voltage phase sequence indicator light is used for displaying a voltage phase sequence corresponding to the current first station;
the current phase sequence indicator light is used for displaying a current phase sequence corresponding to the current first station;
the voltage amplitude display is electrically connected with the voltage metering device of the first station and is used for displaying the amplitude measured by the voltage metering module of the first station;
the current amplitude display is electrically connected with the current metering device of the first station and used for displaying the amplitude measured by the current metering module of the first station.
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