CN111415545B - Parallel high-voltage electric energy metering simulation wiring training cabinet - Google Patents

Parallel high-voltage electric energy metering simulation wiring training cabinet Download PDF

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Publication number
CN111415545B
CN111415545B CN202010466538.7A CN202010466538A CN111415545B CN 111415545 B CN111415545 B CN 111415545B CN 202010466538 A CN202010466538 A CN 202010466538A CN 111415545 B CN111415545 B CN 111415545B
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switch
current
voltage
switch group
signal
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CN111415545A (en
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贾宏伟
吴清华
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Training and Evaluation Center of Guangdong Power Grid Co Ltd
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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
    • G09B9/00—Simulators for teaching or training purposes

Abstract

The invention relates to the field of power generationThe training cabinet comprises a control panel and an operation panel, an operator closes any group of control switch groups in the training and learning process, a voltage metering module detects the connected voltage signals to obtain the voltage phase sequence of the current control switch group, and a current metering module detects the connected voltage signals UACorresponding current signal IASum voltage signal UCCorresponding current signal ICDetecting to obtain a current phase sequence corresponding to the current control switch group; because the three voltage signal terminals accessed by each control switch group are in different sequences, the two first current signal terminals and the two second current signal terminals accessed by each control switch group are in different sequences, and different voltage phase sequences and current phase sequences are correspondingly arranged on each control switch group by closing each control switch group.

Description

Parallel high-voltage electric energy metering simulation wiring training cabinet
Technical Field
The invention relates to the field of training in power production, in particular to a parallel high-voltage 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 field work, and the technical problem that the requirements of training and checking the actual operation of the operator cannot be really met is solved.
Disclosure of Invention
The invention provides a parallel high-voltage 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 parallel high-voltage electric energy metering simulation wiring training cabinet which comprises a control panel and an operation panel, wherein the control panel comprises a controller, the operation panel comprises an electric energy metering device, the electric energy metering device comprises a voltage metering module and a current metering module, the voltage metering module comprises three voltage signal terminals, and the current metering module comprises two first current signal terminals and two second current signal terminals; the controller comprises a plurality of groups of control switch groups;
each control switch group is connected with a voltage signal UABReference voltage signal and voltage signal UCBAnd a voltage signal UAVoltage signal UCThe control switch group is used for connecting the three voltage signal terminals with the voltage signal UABThe reference voltage signal and the voltage signal UCBRespectively carrying out signal connection or disconnection to the first current signal terminal, the second current signal terminal and the voltage signal UAThe voltage signal UCThe ground wire is connected or disconnected; the three voltage signal terminals accessed by each control switch group are different in sequence, and the two first current signal terminals and the two second current signal terminals accessed by each control switch group are different in sequence;
one of the two first current signal terminals is always connected with the ground wire, and the other first current signal terminal is connected with the voltage signal UAThe voltage signal UCA voltage signal of; one of the two second current signal terminals is always connected with the ground wire, and the other second current signal terminal is connected with the voltage signal UAThe voltage signal UCOf the voltage signal.
Preferably, the control switch group comprises a current switch group and a voltage switch group, and the voltage switch group is used for connecting three voltage signal terminals with a voltage signal UABReference voltage signal and voltage signal UCBSwitching on or off a voltage signal;
the current switch group is used for connecting the first current signal terminal, the second current signal terminal and the voltage signal UAThe voltage signal UCAnd the ground wire is connected or disconnected.
Preferably, the electric energy metering device comprises an electric energy meter, the three voltage signal terminals are respectively a first signal terminal, a fourth signal terminal and a seventh signal terminal, the two first current signal terminals are respectively a second signal terminal and a third signal terminal, and the two second current terminals are respectively a fifth signal terminal and a sixth signal terminal.
Preferably, the voltage switch group comprises a first switch, a fourth switch and a seventh switch;
the first end of the first switch of each voltage switch group is connected with a voltage signal UABThe second end is respectively connected with any one of the first signal terminal, the fourth signal terminal and the seventh signal terminal;
a first end of a fourth switch of each voltage switch group is connected with a reference voltage signal, and a second end of the fourth switch of each voltage switch group is connected with any one of a first signal terminal, a fourth signal terminal and a seventh signal terminal;
the first end of the seventh switch of each voltage switch group is connected with a voltage signal UCBThe second end is respectively connected with any one of the first signal terminal, the fourth signal terminal and the seventh signal terminal;
the sequence of the second end of the first switch, the second end of the fourth switch and the second end of the seventh switch which are connected into the signal terminal in the same voltage switch group is different.
Preferably, the current switch group comprises a second switch, a third switch, a fifth switch and a sixth switch;
the first end of the second switch of each current switch group is connected with a voltage signal UAThe second end is connected to one signal terminal of the second signal terminal, the third signal terminal, the fifth signal terminal and the sixth signal terminal;
the first ends of the third switch and the sixth switch of each current switch group are connected with the ground wire, and the second ends of the third switch and the sixth switch are connected with one signal terminal of the second signal terminal, the third signal terminal, the fifth signal terminal and the sixth signal terminal;
the first end of the fifth switch of each current switch group is connected with a voltage signal UCThe second ends are connected to the second signal terminalsOne of the third signal terminal, the fifth signal terminal and the sixth signal terminal;
the second end of the third switch of each current switch group is connected with one of the second signal terminal and the third signal terminal or one of the fifth signal terminal and the sixth signal terminal, the second end of the sixth switch of each current switch group is connected with one of the second signal terminal and the third signal terminal or one of the fifth signal terminal and the sixth signal terminal, and the sequence of the signal terminals connected with the second ends of the second switch, the third switch, the fifth switch and the sixth switch of the same current switch group is different.
Preferably, the training device further comprises a joint junction box, the joint junction box comprises at least seven groups of connecting terminals and an external module for connecting the accessed circuit, each group of connecting terminals is provided with a connecting input terminal and a connecting output terminal in one-to-one correspondence, the external module is arranged between the connecting input terminal and the connecting output terminal, the connecting output terminals of the joint junction box correspond 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 and the seventh signal terminal in one-to-one correspondence, and the connecting input terminals are respectively connected with the second ends of the current switch group switches and the voltage switch group switches in one-to-one correspondence.
Preferably, the voltage switch group includes 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 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 through a wire, 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, and the fifth electric power sourceThe first end of the fourth switch of the voltage switch group is connected with the first end of the fourth switch of the sixth voltage switch group through a lead, 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 through leads, and the first end of the first switch of the first voltage switch group is connected with a voltage signal UABA first end of a fourth switch of the first voltage switch group is connected with a reference voltage signal, and a first end of a seventh switch of the first voltage switch group is connected with a voltage signal UCB；
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 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.
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 and an eighth current switch group;
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 and the first end of the second switch of the eighth current switch group are connected through leads;
the first end of the third switch of the first current switch group, the first end of the third switch of the second current switch group, the first end of the third switch of the third current switch group, the first end of the third switch of the fourth current switch group, the first end of the third switch of the fifth current switch group, the first end of the third switch of the sixth current switch group, the first end of the third switch of the seventh current switch group and the first end of the third switch of the eighth current switch group are connected through a lead;
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 and the first end of the fifth switch of the eighth current switch group are connected through a lead;
the first end of the sixth switch of the first current switch group, the first end of the sixth switch of the second current switch group, the first end of the sixth switch of the third current switch group, the first end of the sixth switch of the fourth current switch group, the first end of the sixth switch of the fifth current switch group, the first end of the sixth switch of the sixth current switch group, the first end of the sixth switch of the seventh current switch group and the first end of the sixth switch of the eighth current switch group are connected through a lead;
of a second switch of the first current switch groupThe first end is connected with a voltage signal UAThe first end of the third switch of the first current switch group is connected to the ground wire, and the first end of the fifth switch of the first current switch group is connected to the voltage signal UCThe first end of the sixth switch of the first current switch group is connected with a ground wire;
the second end of the second 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 second 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 fifth 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 fifth switch of the seventh current switch group and the second end of the sixth switch of the eighth current switch group are connected through a lead, and the second end of the sixth switch of the eighth current switch group is connected with the third signal terminal through a lead;
the second end of the third 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 third 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 sixth 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 sixth switch of the seventh current switch group and the second end of the fifth switch of the eighth current switch group are connected through a lead, and the second end of the fifth switch of the eighth current switch group is connected with the second signal terminal through a lead;
the second end of the fifth 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 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 second 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 current switch of the seventh current switch group and the second end of the third switch of the eighth current switch group are connected through a lead, and the second end of the third switch of the eighth current switch group is connected with a fifth signal terminal through a lead;
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 fifth 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 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 and the second end of the second switch of the eighth current switch group are connected through a lead, and the second end of the second switch of the eighth current switch group is connected with the sixth signal terminal through a lead.
Preferably, the voltage switch set further includes a voltage phase sequence indicator light switch, the current switch set further includes a current phase sequence indicator light switch, and the control panel 10 further includes a voltage phase sequence indicator light corresponding to the voltage phase sequence indicator light switch and a current phase sequence indicator light corresponding to the current phase sequence indicator light switch;
the controller also comprises a load circuit, wherein the input end of the load circuit is arranged between the current switch group and the current metering module or the voltage signal UAAnd said voltage signal UCThe load circuit is connected with the voltage signal U before being connected to the first ends of the switches of the current switch groupAConverted into a current signal IAAnd the voltage signal UCConverting the current signal IC。
Preferably, the control panel further includes a capacitive switch, a capacitive indicator light, an inductive indicator light, a voltage amplitude display and a current amplitude display, the capacitive indicator light and the inductive indicator light are connected to the load circuit, the capacitive switch is disposed in the load circuit, the load circuit includes a capacitive load and an inductive load, the capacitive switch is used for controlling the load circuit to be connected to the capacitive load, the voltage amplitude display is connected to the voltage metering module, and the current amplitude display is connected to the current metering module.
According to the technical scheme, the invention has the following advantages:
the embodiment of the invention provides a parallel high-voltage electric energy metering simulation wiring training cabinet which comprises a control panel and an operation panel, wherein an operator closes any one group of control switch groups in the training and learning process, and a voltage metering module detects an accessed voltage signal to obtainThe current metering module controls the voltage phase sequence of the switch group and the connected voltage signal UACorresponding current signal IASum voltage signal UCCorresponding current signal ICDetecting to obtain a current phase sequence corresponding to the current control switch group; because the three voltage signal terminals accessed by each control switch group are in different sequences, the two first current signal terminals and the two second current signal terminals accessed by each control switch group are in different sequences, and different voltage phase sequences and current phase sequences are correspondingly arranged on each control switch group by closing each control switch group.
Through each control switch group of the training device provided by the embodiment, at most 48 wiring modes of an electric energy metering electric power production field can be set, the situations that voltage phase sequences are unknown and current signals are unclear in the production field are simulated, and through detection by using the electric energy metering device, an operator can obtain the situations of the voltage phase sequences and the current phase sequences corresponding to the current control switch groups; and the operating personnel can improve the actual operation capability of the operating personnel by controlling the closing of each control switch group and setting various voltage phase sequences and current phase sequences, the operating personnel is closer to the working condition of an electric power production field, and 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 the operating personnel cannot be really met are 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 parallel type high-voltage electric energy metering simulation wiring training cabinet according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of an operation panel of a parallel type high-voltage electric energy metering simulation wiring training cabinet provided by the embodiment of the invention.
Fig. 3 is a schematic structural diagram of a cabinet body of a parallel type high-voltage electric energy metering simulation wiring training cabinet provided by an embodiment of the invention.
Fig. 4 is a wiring diagram of each voltage switch group of a parallel type high-voltage electric energy metering simulation wiring training cabinet provided by the embodiment of the invention.
Fig. 5 is a wiring diagram of each current switch group of a parallel type high-voltage electric energy metering simulation wiring training cabinet provided by the embodiment of the invention.
Fig. 6 is a schematic structural diagram of parallel connection of multiple stations of each current switch group of a parallel high-voltage electric energy metering simulation wiring training cabinet according to an embodiment of the present invention.
In the figure:
1. a first signal terminal; 2. a second signal terminal; 3. a third signal terminal; 4. a fourth signal terminal; 5. a fifth signal terminal; 6. a sixth signal terminal; 7. a seventh signal terminal; 8. a voltage phase sequence indicator 161 switch; 9. a current phase sequence indicator 162 switch; 10. a control panel 10; 11. an operation panel; 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; 12. a controller; 13. a joint junction box; 14. an electric energy metering device; 151. a current metering module; 152. a voltage metering module; 161. a voltage phase sequence indicator light; 162. a current phase sequence indicator light; 171. a capacitive indicator light; 172. an inductive indicator light; 173. a capacitive switch; 181. a voltage amplitude display; 182. a current amplitude display; 191. a cabinet body; 192. a door is arranged; 193. a lower door; 194. an input terminal interface; 201. a wire passing hole; 202. and accessing the terminal row.
Detailed Description
The invention provides a parallel type high-voltage 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 6, the parallel type high-voltage electric energy metering simulation wiring training cabinet provided by the embodiment of the invention includes a cabinet body 191, the cabinet body 191 includes an upper portion of the cabinet body 191 and a lower portion of the cabinet body 191, the lower portion of the cabinet body 191 is provided with at least eight input terminal interfaces 194 for wires (signal sources) to be connected to and output terminal interfaces for wires to be connected to, the signal sources in this embodiment are six power signals transmitted by a power circuit, and respectively correspond to a voltage signal UABReference voltage signal, voltage signal UCBVoltage signal UAVoltage signal UCAnd a ground line. The voltage signal UAFor generating a current signal I in a training cabinetASaid voltage signal UCFor generating a current signal I in a training cabinetC。
The input terminal interface 194 and the output terminal interface may be disposed on the same sidewall of the lower portion of the cabinet body 191, or disposed on different sidewalls of the lower portion of the cabinet body 191, and when disposed on different sidewalls to facilitate connection between the cabinet bodies 191, an enough space is reserved for the next cabinet body 191 to place. The front side and the rear side of the lower part of the cabinet body 191 are provided with lower doors 193, which is convenient for operators to operate the cabinet bodyThe wires within 191 make the connections. An upper door 192 capable of being opened and closed is installed at the upper part of the cabinet body 191 through a first hinge, and a first door handle is arranged on the upper door 192; be equipped with 10 and operating panel 11 in the cabinet body 191 upper portion, when operating panel 11 is a plurality of, operating panel 11 can be horizontal equipartition set up in cabinet body 191 upper portion, also can encircle to arrange on cabinet body 191 upper portion through certain angle, operating panel 11 can reduce the occupation space of cabinet body 191 through encircleing arranging, the mode that horizontal equipartition set up in cabinet body 191 upper portion is convenient for unpack apart and is carried out the wiring. The operation panel 11 can also be directly arranged on the door, and the operation panel 11 can be connected by opening the door, so that convenience, rapidness and convenience in examination are realized. In this embodiment, a rectangular cabinet body 191 is specifically adopted, the input terminal interface 194 is arranged on the left side surface of the lower portion of the cabinet body 191, the output terminal interface of the cabinet body 191 is arranged on the right side surface of the lower portion of the cabinet body 191, and the input terminal interface 194 and the output terminal interface both include a voltage interface for accessing three voltage signal lines, a voltage interface for accessing two voltage signal lines, a reference interface for accessing a reference line, and a ground line interface; when an operator needs to control or detect which operation panel 11 in the training process, the corresponding door of the operation panel 11 is opened, so that the operation panel 11 can be controlled and detected. The operation panel 11 is rotatably mounted on the upper portion of the cabinet 191 through a second hinge, a second door handle is arranged on the operation panel 11, the operation panel 11 can be opened by pulling the second door handle, and the back of the operation panel 11 can be seen and wired. The front side of the operation panel can be used for operator wiring, and the back side of the operation panel is provided with a control panel 10. The control panel is provided with 7 wire passing holes 201, and the 7 wire passing holes 201 can be used for a lead to pass through, so that wiring between the operation panel and the control panel is facilitated. The control panel is provided with an access terminal row, the access terminal row comprises a first access terminal, a second access terminal, a third access terminal, a fourth access terminal, a fifth access terminal, a sixth access terminal and a seventh access terminal, and a voltage signal UABReference voltage signal, voltage signal UCBVoltage signal UAVoltage signal UCAnd ground wires to the access terminals of the access terminal row 202 of the control panel.
The operation panel 11 comprises an electric energy meter and a joint junction box 13, the control panel 10 comprises a controller 12, the electric energy meter is preferably a three-phase two-element active electric energy meter, the three-phase two-element active electric energy meter has seven signal terminals, 48 wiring types can be connected, and only one of the 48 wiring types can realize correct metering detection. 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. The electric energy meter may also be an electric energy metering device 14 or other metering device that performs the same function of detecting current and voltage, respectively.
The electric energy metering device 14 comprises a current metering module 151 and a voltage metering module 152, the electric energy metering device 14 has seven signal terminals in total, the voltage metering module 152 comprises three voltage signal terminals, the three voltage signal terminals are a first signal terminal 1, a fourth signal terminal 4 and a seventh signal terminal 7, the voltage metering module 152 is used for detecting the voltage between any two signal terminals of the first signal terminal 1, the fourth signal terminal 4 and the seventh signal terminal 7, and the current metering module 151 comprises two first current signal terminals and two second current signal terminals; the two first current signal terminals are the second signal terminal 2 and the third signal terminal 3, respectively, and the two second current signal terminals are the fifth signal terminal 5 and the sixth signal terminal 6, respectively. The current metering module 151 is configured to detect a current flowing between the second signal terminal 2 and the third signal terminal 3 and a current flowing between the fifth signal terminal 5 and the sixth signal terminal 6, the voltage metering module 152 may be two voltage elements, specifically two voltage meters, to implement metering, and the current metering device may be two current elements, specifically two current meters, to implement metering.
The controller comprises a plurality of groups of control switch groups and a load circuitThe load circuit is used for connecting a voltage signal UAConverted into a current signal IASum voltage signal UCConverted into a current signal ICThen, the measurement is performed by an ammeter.
Each control switch group is connected with a voltage signal UABReference voltage signal and voltage signal UCBAnd a voltage signal UAVoltage signal UCThe control switch group is used for connecting the three voltage signal terminals with the voltage signal UABThe reference voltage signal and the voltage signal UCBRespectively carrying out signal access or disconnection, specifically: voltage signal UABReference voltage signal and voltage signal UCBAnd a voltage signal UAVoltage signal UCThe ground wire is connected to the input end of the control switch group, the output end of the control switch group is respectively connected with the first signal terminal 1, the fourth signal terminal 4 and the seventh signal terminal 7, and the voltage signal U can be enabled by closing the control switch groupABReference voltage signal and voltage signal UCBAnd the voltage phase sequence corresponding to the currently closed control switch group is obtained by metering through a voltage metering module after the voltage phase sequence is accessed into the first signal terminal 1, the fourth signal terminal 4 and the seventh signal terminal 7 which are in one-to-one correspondence.
The control switch group is used for connecting the first current signal terminal, the second current signal terminal and the voltage signal UAThe voltage signal UCThe ground wire is connected or disconnected; the output end of the control switch group is respectively connected with the second signal terminal 2, the third signal terminal 3, the fifth signal terminal 5 and the sixth signal terminal 6, and the voltage signal U is enabled by closing the control switch groupAVoltage signal UCThe ground wire is correspondingly connected into the second signal terminal 2, the third signal terminal 3, the fifth signal terminal 5 and the sixth signal terminal 6, and the load circuit converts the voltage signal UAConverted into a current signal IASum voltage signal UCConverted into a current signal ICAnd measuring through an electric current measuring module to obtain a voltage phase sequence corresponding to the currently closed control switch group. Here, the load circuit is arranged to controlBefore making switch groups, i.e. voltage signal U output by power supply circuitASum voltage signal UCVoltage signal U is transmitted through load circuitAConverted into a current signal IASum voltage signal UCConverted into a current signal ICThen, the current signal I is actually input into the control switch groupAAnd a current signal ICThe load circuit may also be connected between the control switch group output and the two first current signal terminals and the two second current signal terminals, i.e. between the control switch group output and the second signal terminal 2, the third signal terminal 3, the fifth signal terminal 5 and the sixth signal terminal 6.
The load circuit includes an inductive load, which may be a transformer or a motor, and a capacitive load, which may be a compensation capacitor or the like. The circuit 10 further comprises a capacitive switch 173, a capacitive indicator light 171 and an inductive indicator light 172, the capacitive indicator light 171 and the inductive indicator light 172 are connected to a load circuit, the capacitive switch 173 is arranged in the load circuit, the capacitive switch 173 is used for controlling the load circuit to be connected to a capacitive load, and an input end of the capacitive switch 173 is connected to a voltage signal UASum voltage signal UCWhen the capacitive switch 173 is turned off, the output end of the capacitive switch 173 is turned on, that is, the inductive load is turned on, the inductive indicator 172 is turned on, and the voltage signal U is realized by the inductive load of the load circuitAConverted into a current signal IASum voltage signal UCConverted into a current signal IC. When the capacitive switch 173 is turned on, the output terminal of the capacitive switch 173 is turned on, i.e. the capacitive load is turned on, the capacitive indicator light 171 is turned on, and the voltage signal U is realized by the inductive load of the load circuitAConverted into a current signal IASum voltage signal UCConverted into a current signal IC. The current metering device further comprises an inductive element, and the inductive element is used for controlling the magnitude and the load property of the accessed current signal.
The control switch group is composed of a plurality of linked switches, wherein when any switch in the same switch group is closed, the rest switches in the same group are all closed, and when any switch in the same switch group is opened, the rest switches in the same group are all closed.
The three voltage signal terminals accessed by the control switch groups are different in sequence, that is, the three voltage signal terminals accessed between the two control switch groups are the first signal terminal 1, the fourth signal terminal 4 and the seventh signal terminal 7 in sequence, the signal terminals accessed by the first control switch group cannot be the first signal terminal 1, the fourth signal terminal 4 and the seventh signal terminal 7 in sequence, that is, the signal terminals accessed by the second control switch group can be the seventh signal terminal 7, the fourth signal terminal 4 and the first signal terminal 1 in sequence, and so on, the same sequence does not occur. The two first current signal terminals and the two second current signal terminals accessed by the control switch group are in different orders. That is, in the two control switch groups, the first control switch group is sequentially connected to the second signal terminal 2, the third signal terminal 3, the fifth signal terminal 5 and the sixth signal terminal 6, the second control switch group is not sequentially connected to the second signal terminal 2, the third signal terminal 3, the fifth signal terminal 5 and the sixth signal terminal 6, and the second control switch group is sequentially connected to the third signal terminal 3, the second signal terminal 2, the sixth signal terminal 6 and the fifth signal terminal 5, and so on, the same sequence does not occur.
One of the two first current signal terminals is always connected with the ground wire, and the other first current signal terminal is connected with the voltage signal UAThe voltage signal UCA voltage signal of; that is, one of the second signal terminal 2 and the third signal terminal 3 is always connected to the ground, and the other signal terminal is connected to the voltage signal UAOr the voltage signal UC(ii) a One of the two second current signal terminals is always connected with the ground wire, and the other second current signal terminal is always connected with the ground wireThe signal terminal is connected into the voltage signal UAThe voltage signal UCOf the other voltage signal, i.e. the fifth signal terminal 5 and the sixth signal terminal 6, one signal terminal is always connected to the ground, and the other signal terminal can be connected to the voltage signal UAOr the voltage signal UCAnd a different signal terminal that is connected to the first current signal terminal. For example, the second signal terminal 2 is connected to a voltage signal UAThe third signal terminal 3 is connected with the ground wire, the fifth signal terminal 5 is connected with the ground wire, and the sixth signal terminal 6 is connected with the UC。
By controlling the closing of each group of control switch groups, when the first signal terminal 1 is connected with a voltage signal UABThe fourth signal terminal 4 is connected to a reference voltage signal and the seventh signal terminal 7 is connected to a voltage signal UCBThe voltage phase sequence that can be obtained by the voltage metering module 152 is ABC; when the first signal terminal 1 is connected with a reference voltage signal, the fourth signal terminal 4 is connected with a voltage signal UCBThe seventh signal terminal 7 is connected with a voltage signal UABThen, the phase sequence of the voltage that can be obtained by the voltage metering module 152 is BCA; when the first signal terminal 1 is connected with a voltage signal UCBThe fourth signal terminal 4 is connected with a voltage signal UABWhen the seventh signal terminal 7 is connected to the reference voltage signal, the voltage phase sequence CAB can be obtained through the voltage metering module 152; when the first signal terminal 1 is connected with a voltage signal UCBThe fourth signal terminal 4 is connected with a reference voltage signal, and the seventh signal terminal 7 is connected with a voltage signal UABThen, the voltage phase sequence CBA can be obtained by the voltage metering module 152; when the first signal terminal 1 is connected with a reference voltage signal, the fourth signal terminal 4 is connected with a voltage signal UABThe seventh signal terminal 7 is connected with a voltage signal UCBThen, the voltage phase sequence BAC can be obtained by the voltage metering module 152; when the first signal terminal 1 is connected with a voltage signal UABThe fourth signal terminal 4 is connected with a voltage signal UCBWhen the seventh signal terminal 7 is connected to the reference voltage signal, the voltage phase sequence ACB can be obtained by the voltage metering module 152. Three voltage signal terminals and a voltage signal U are paired through each control switchABGinseng, ginseng and radix codonopsis pilosulaeReference voltage signal and voltage signal UCBThe respective access realizes that six different voltage phase sequences are set in the training cabinet.
When the second signal terminal 2 is connected with a voltage signal UAThe third signal terminal 3 is connected to the ground wire, and the fifth signal terminal 5 is connected to the voltage signal UCWhen the sixth signal terminal 6 is connected to the ground line, the current phase sequence can be obtained as I by the current metering module 151AIC(ii) a When the second signal terminal 2 is connected to the ground, the third signal terminal 3 is connected to the voltage signal UAThe fifth signal terminal 5 is connected with a voltage signal UCWhen the sixth signal terminal 6 is connected to the ground line, the current phase sequence can be acquired as-I by the current metering module 151AIC(ii) a When the second signal terminal 2 is connected with a voltage signal UAThe third signal terminal 3 is connected to the ground, the fifth signal terminal 5 is connected to the ground, and the sixth signal terminal 6 is connected to the voltage signal UCWhen the current phase sequence is I, it can be obtained by the current metering module 151A-IC(ii) a When the second signal terminal 2 is connected to the ground, the third signal terminal 3 is connected to the voltage signal UAThe fifth signal terminal 5 is connected to the ground wire, and the sixth signal terminal 6 is connected to the voltage signal UCWhen the current phase sequence is-I, it can be obtained by the current metering module 151A-IC(ii) a When the second signal terminal 2 is connected with a voltage signal UCThe third signal terminal 3 is connected to the ground wire, and the fifth signal terminal 5 is connected to the voltage signal UAWhen the sixth signal terminal 6 is connected to the ground line, the current phase sequence can be obtained as I by the current metering module 151CIA(ii) a When the second signal terminal 2 is connected to the ground, the third signal terminal 3 is connected to the voltage signal UCThe fifth signal terminal 5 is connected with a voltage signal UAWhen the sixth signal terminal 6 is connected to the ground line, the current phase sequence can be acquired as-I by the current metering module 151CIA(ii) a When the second signal terminal 2 is connected with a voltage signal UCThe third signal terminal 3 is connected to the ground, the fifth signal terminal 5 is connected to the ground, and the sixth signal terminal 6 is connected to the voltage signal UAWhen the current phase sequence is I, it can be obtained by the current metering module 151C-IA(ii) a When the second message isThe signal terminal 2 is connected with a ground wire, and the third signal terminal 3 is connected with a voltage signal UCU is connected to the ground wire at the fifth signal terminal 5 and the voltage signal at the sixth signal terminal 6AThe current phase sequence of-I can be obtained by the current metering module 151C-IA. The first current signal terminal, the second current signal terminal and the voltage signal U are paired through each control switch groupAThe voltage signal UCThe ground wire is respectively connected with the first current signal terminal, the second current signal terminal and the voltage signal UAThe voltage signal UCAnd the earth wires are respectively connected, so that eight different current phase sequences can be obtained, and wiring setting of the eight different current phase sequences is realized.
The training device provided by the embodiment can set up at most 48 wiring modes for electric energy metering in an electric power production field through each control switch group, so that the situations that the voltage phase sequence is unknown and the current signal is unclear in the production field are simulated, and an operator can obtain the situations of the voltage phase sequence and the current phase sequence of the current control switch group by using the electric energy metering device 14 for detection; and the operating personnel can also set various voltage phase sequences and current phase sequences by carrying out on-off control on different control switch groups, the actual operation capability of the operating personnel can be improved, the operating personnel is more close to the working condition of an electric power production field, and 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 field work, and the requirements of training and checking the actual operation of the operating personnel cannot be really met are solved.
Wherein each control switch group comprises a current switch group and a voltage switch group, and the voltage switch group is used for connecting three voltage signal terminals (a first signal terminal 1, a fourth signal terminal 4 and a seventh signal terminal 7) with a voltage signal UABReference voltage signal and voltage signal UCBSwitching on or off a voltage signal; by controlling different voltage switch groups, six different types of voltage phase sequences can be set.
The current isThe switch group is used for connecting the first current signal terminal, the second current signal terminal and the voltage signal UAThe voltage signal UCAnd the ground wire is connected or disconnected.
Two first current signal terminals, two second voltage signal terminals and a voltage signal U can be connected by controlling different voltage switch groupsAVoltage signal UCAnd eight different current phase sequences can be set by connecting the grounding wire. By respectively controlling the voltage switch group and the current switch group to switch in the voltage signal U of the signal endABReference voltage signal, voltage signal UCBVoltage signal UAVoltage signal UCThe voltage and current phase sequence of 48 wiring types can be set by correspondingly connecting the grounding wire. The operator can simulate the power production training in the training box provided by the embodiment, can know various voltage phase sequences and current phase sequences of various wiring types, and can evaluate the actual operation capacity of the operator by setting corresponding examination requirements during examination, so that whether the operator has the capacity of operating on a power production site is known.
The voltage switch group comprises a first switch, a fourth switch and a seventh switch;
the first end of the first switch of each voltage switch group is connected with a voltage signal UABThe second end is respectively connected with any one of the first signal terminal 1, the fourth signal terminal 4 and the seventh signal terminal 7; any one of a first signal terminal 1, a fourth signal terminal 4 and a seventh signal terminal 7 accessed to the second end of the first switch of the voltage switch group of different groups is used for realizing control of the voltage signal UABAnd the detection is carried out by connecting the signal terminals into different signal terminals. For example: the voltage signal U is obtained by the first signal terminal 1 connected to the second end of the first switch of the voltage switch groupABTo the first signal terminal 1.
A first end of a fourth switch of each voltage switch group is connected with a reference voltage signal, and a second end of the fourth switch is connected with any one of a first signal terminal 1, a fourth signal terminal 4 and a seventh signal terminal 7; the second end of the fourth switch of different voltage switch groups is connected to any one of the first signal terminal 1, the fourth signal terminal 4 and the seventh signal terminal 7, so that the reference voltage signal is controlled to be connected to different signal terminals for detection. The reference voltage signal may be a voltage signal provided by a zero line or a ground line, i.e. directly connected to zero or grounded. For example: the second end of the fourth switch of the voltage switch group is connected to the fourth signal terminal 4.
The first end of the seventh switch of each voltage switch group is connected with a voltage signal UCBThe second end is respectively connected with any one of the first signal terminal 1, the fourth signal terminal 4 and the seventh signal terminal 7; any one of a first signal terminal 1, a fourth signal terminal 4 and a seventh signal terminal 7 connected to the second end of the seventh switch of different voltage switch groups is used for controlling the voltage signal UCBAnd the detection is carried out by connecting the signal terminals into different signal terminals. For example: the second end of the seventh switch of the voltage switch group is connected to the seventh signal terminal 7.
The signal terminals accessed by the second end of the first switch, the second end of the fourth switch and the second end of the seventh switch in the same voltage switch group are different. Due to the fact that the phase sequence of the current voltage switch group needs to be detected, the second ends of the switches of the same voltage switch group need to be correspondingly connected with different voltage signals respectively, and the detection of the voltage phase sequence can be achieved.
The signal terminals accessed by the second ends of the first switch, the fourth switch and the seventh switch of different voltage switch groups are different in sequence. That is, between different voltage switch groups, the sequence of the signal terminals connected to the second terminal of the first switch, the second terminal of the fourth switch and the second terminal of the seventh switch may be: a first signal terminal 1, a fourth signal terminal 4 and a seventh signal terminal 7, the measured voltage phase sequence being ABC; a seventh signal terminal 7, a first signal terminal 1 and a fourth signal terminal 4, the measured voltage phase sequence being CAB; a first signal terminal 1, a seventh signal terminal 7 and a fourth signal terminal 4, the measured voltage phase sequence being ACB, the seventh signal terminal 7, the fourth signal terminal 4 and the first signal terminal 1, the measured voltage phase sequence CBA; a fourth signal terminal 4, a first signal terminal 1 and a seventh signal terminal 7, the measured voltage phase sequence being BAC; a fourth signal terminal 4, a seventh signal terminal 7 and a first signal terminal 1, and the measured voltage phase sequence is BCA.
The method specifically comprises the following steps: the voltage switch group comprises a first voltage switch group 111, a second voltage switch group 112, 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 end of the first switch of the first voltage switch group 111, the first end of the first switch of the second voltage switch group 112, the first end of the first switch of the third voltage switch group 113, the first end of the first switch of the fourth voltage switch group 114, the first end of the first switch of the fifth voltage switch group 115 and the first end of the first switch of the sixth voltage switch group 116 are connected through a lead, the first end of the fourth switch of the first voltage switch group 111, the first end of the fourth switch of the second voltage switch group 112, the first end of the fourth switch of the third voltage switch group 113, the first end of the fourth switch of the fourth voltage switch group 114, the first end of the fifth voltage switch group 115 and the first end of the fourth switch of the sixth voltage switch group 116 are connected through a lead, the first end of the seventh switch of the first voltage switch group 111, the first end of the seventh switch of the second voltage switch group 112, the first end of the seventh switch of the third voltage switch group 113, the first end of the seventh switch of the fourth voltage switch group 114, the first end of the seventh switch of the fifth voltage switch group 115 and the first end of the seventh switch of the sixth voltage switch group 116 are connected through a conducting wire.
A first end of the first switch of the first voltage switch group 111 is connected to a voltage signal UABI.e. voltage signal UABThe first switch-in terminal is connected to a first switch-in terminal of the switch-in terminal row 202, and then the first switch-in terminal is connected to a first end of the first switch through a conducting wire; a first end of the fourth switch of the first voltage switch group 111 is connected to a reference voltage signal, that is, the reference voltage signal is connected to the fourth access terminal of the access terminal row 202, and then is connected to the fourth switch through a wireOne end; a first end of the seventh switch of the first voltage switch group 111 is connected with a voltage signal UCB(ii) a I.e. the voltage signal UCBThe seventh access terminal of the access terminal row 202 is connected to the first end of the seventh switch through a wire.
The second end of the first switch of the first voltage switch group 111, the second end of the fourth switch of the second voltage switch group 112, the second end of the seventh switch of the third voltage switch group 113, the second end of the seventh switch of the fourth voltage switch group 114, the second end of the fourth switch of the fifth voltage switch group 115 and the second end of the first switch of the sixth voltage switch group 116 are connected through a conducting wire, the second end of the fourth switch of the first voltage switch group 111, the second end of the seventh switch of the second voltage switch group 112, the second end of the first switch of the third voltage switch group 113, the second end of the fourth switch of the fourth voltage switch group 114, the second end of the first switch of the fifth voltage switch group 115 and the second end of the seventh switch of the sixth voltage switch group 116 are connected through a conducting wire, 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 112, the second end of the first switch of the sixth voltage switch group 116, The second terminal of the fourth switch of the third voltage switch group 113, the second terminal of the first switch of the fourth voltage switch group 114, the second terminal of the seventh switch of the fifth voltage switch group 115 and the second terminal of the fourth switch of the sixth voltage switch group 116 are connected through wires.
The voltage switch group further includes a voltage phase sequence indicator light switch 8, the current switch group further includes a current phase sequence indicator light switch 9, and the operation panel 11 further includes a voltage phase sequence indicator light 161 corresponding to the voltage phase sequence indicator light switch 8 and a current phase sequence indicator light 162 corresponding to the current phase sequence indicator light switch 9; that is, the first voltage switch group 111 includes the first voltage phase-sequence indicator light switch 8 of the voltage phase-sequence indicator light 161 corresponding to the voltage phase-sequence ABC, the second voltage switch group 112 includes the second voltage phase-sequence indicator light switch 8 of the voltage phase-sequence indicator light 161 corresponding to the voltage phase-sequence BCA, the third voltage switch group 113 includes the third voltage phase-sequence indicator light switch 8 of the voltage phase-sequence indicator light 161 corresponding to the voltage phase-sequence CAB, the fourth voltage switch group 114 includes the fourth voltage phase-sequence indicator light switch 8 of the voltage phase-sequence indicator light 161 corresponding to the voltage phase-sequence CBA, the fifth voltage switch group 115 includes the fifth voltage phase-sequence indicator light switch 8 of the voltage phase-sequence indicator light 161 corresponding to the voltage phase-sequence BAC, and the sixth voltage switch group 116 includes the sixth voltage phase-sequence indicator light switch 8 of the voltage phase-sequence indicator light 161 corresponding to the voltage phase-sequence ACD.
The first voltage switch group 111 is controlled to be closed, and the first signal terminal 1 is connected with a voltage signal UABThe fourth signal terminal 4 is connected with a reference voltage signal, and the seventh signal terminal 7 is connected with a voltage signal UCBThe voltage phase sequence measured by the voltage metering module 152 is ABC, and the voltage phase sequence indicator 161 with the voltage phase sequence of ABC is turned on; the second voltage switch group 112 is controlled to be closed, the first signal terminal 1 is connected with a reference voltage signal, and the fourth signal terminal 4 is connected with a voltage signal UCBThe seventh signal terminal 7 is connected with a voltage signal UABWhen the voltage phase sequence measured by the voltage metering module 152 is BCA, the voltage phase sequence indicator light 161 with the BCA voltage phase sequence is on; the third voltage switch group 113 is controlled to be closed, and the first signal terminal 1 is connected with a voltage signal UCBThe fourth signal terminal 4 is connected with a voltage signal UABWhen the seventh signal terminal 7 is connected to the reference voltage signal, the voltage phase sequence measured by the voltage metering module 152 is CAB, and the voltage phase sequence indicator lamp 161 with the voltage phase sequence CAB is turned on; the fourth voltage switch group 114 is controlled to be closed, and the first signal terminal 1 is connected with a voltage signal UCBThe fourth signal terminal 4 is connected with a reference voltage signal, and the seventh signal terminal 7 is connected with a voltage signal UABWhen the voltage phase sequence measured by the voltage metering module 152 is CBA, the voltage phase sequence indicator light 161 with the voltage phase sequence of CBA; the fifth voltage switch set 115 is controlled to be closed, the first signal terminal 1 is connected with a reference voltage signal, and the fourth signal terminal 4 is connected with a voltage signal UABThe seventh signal terminal 7 is connected with a voltage signal UCBWhen the voltage phase sequence measured by the voltage metering module 152 is BAC, the voltage phase sequence indicator light 161 with the voltage phase sequence BAC is on; the sixth voltage switch group 116 is controlled to be closed, and the first signal terminal 1 is connected with a voltage signal UABThe fourth signal terminal 4 is connected with a voltage signal UCBWhen the seventh signal terminal 7 is connected to the reference voltage signal, it is poweredThe voltage phase sequence measured by the voltage metering module 152 is ACB, and the voltage display lamp with the voltage phase sequence of ACB is on. The manner of controlling the first voltage switch group 111, the second voltage switch group 112, 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 to be opened and closed can be controlled through manual operation, or can be controlled by adopting a logic circuit of the controller 12, various voltage phase sequence conditions of an electric power production field can be set through the control of opening and closing of each voltage switch group, an operator can know various voltage phase sequence conditions of the electric power production field, the actual operation service level of the operator can be effectively improved, the type of the current voltage phase sequence can be identified through own detection operation, the examination task is completed, and the service level of the operator can be effectively evaluated. In addition, the current voltage phase sequence can be known by the voltage phase sequence indicator lamp 161 of each voltage phase sequence. The voltage phase sequence indicator lamps 161 are provided on the control panel 10.
The current switch group comprises a second switch, a third switch, a fifth switch and a sixth switch;
the first end of the second switch of each current switch group is connected with a voltage signal UAThe second end is connected to one of the second signal terminal 2, the third signal terminal 3, the fifth signal terminal 5 and the sixth signal terminal 6; by applying a voltage signal U to the load circuitAConverted into a current signal IAThen measuring;
the first ends of the third switch and the sixth switch of each current switch group are connected with the ground wire, and the second ends of the third switch and the sixth switch are connected with one signal terminal of the second signal terminal 2, the third signal terminal 3, the fifth signal terminal 5 and the sixth signal terminal 6;
the first end of the fifth switch of each current switch group is connected with a voltage signal UCThe second ends of the first and second terminals are connected to one signal terminal of the second, third, fifth and sixth signal terminals 2, 3, 5 and 6; by applying a voltage signal U to the load circuitCConverted into a current signal ICThen measuring;
the second end of the third switch of each current switch group is connected to one of the second signal terminal 2 and the third signal terminal 3 or one of the fifth signal terminal 5 and the sixth signal terminal 6, the second end of the sixth switch of each current switch group is connected to one of the second signal terminal 2 and the third signal terminal 3 or one of the fifth signal terminal 5 and the sixth signal terminal 6, and the signal terminals connected to the second ends of the second switch, the third switch, the fifth switch and the sixth switch of the same current switch group are different. The second signal terminal 2 and the third signal terminal 3 can not be connected to the ground wire simultaneously or respectively connected to the voltage signal U in the same current switch groupASum voltage signal UCThe situation is not able to measure the current phase sequence and is not able to meet the needs of the problem being solved.
Eight different current phase sequence conditions can be obtained by controlling the closing of each current switch group, and an operator can know the different current phase sequence conditions in a contact manner, so that how to detect and judge the current phase sequence is learned.
The method specifically comprises the following steps: the current switch group includes 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 and an eighth current switch group 128, the first current switch group 121 includes a current phase sequence corresponding to IAICThe first current phase-sequence indicator lamp switch 9 of the current phase-sequence indicator lamp 162, and the second current switch group 122 includes a switch corresponding to a current phase sequence of-IAICThe second current phase-sequence indicator light switch 9 and the third current switch group 123 of the current phase-sequence indicator light 162 comprise a current phase sequence corresponding to IA-ICThe third current phase sequence indicator light switch 9 and the fourth current switch group 124 of the current signal lamp comprise a current phase sequence corresponding to-IA-ICThe fourth current phase-sequence indicator light switch 9 of the current phase-sequence indicator light 162 and the fifth current switch group 125 further comprise a current phase sequence corresponding to ICIAThe fifth current phase-sequence indication of the current phase-sequence indicator light 162The lamp switch 9, the sixth current switch group 126 further comprise a phase sequence corresponding to a current of-ICIAThe sixth current phase-sequence indicator light switch 9 of the current phase-sequence indicator light 162 and the seventh current switch group 127 further comprise a current phase sequence corresponding to IC-IAThe seventh current phase-sequence indicator light switch 9 of the current phase-sequence indicator light 162, the eighth current switch group 128 further comprise a current phase sequence corresponding to-IC-IAThe eighth current phase-sequence indicator light switch 9 of the current phase-sequence indicator light 162. The current phase sequence indicator lights 162 are provided on the control panel 10.
A first end of a second switch of the first current switch group 121, a first end of a second switch of the second current switch group 122, a first end of a second switch of the third current switch group 123, a first end of a second switch of the fourth current switch group 124, a first end of a second switch of the fifth current switch group 125, a first end of a second switch of the sixth current switch group 126, a first end of a second switch of the seventh current switch group 127 and a first end of a second switch of the eighth current switch group 128 are connected through a conducting wire, 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 127 of the seventh current switch group and a first end of the eighth current switch group 128 are connected through a conducting wire, 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 and a first terminal of a fifth switch of the eighth current switch group 128 are connected through a conducting wire, 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 and a first end of a sixth switch of the eighth current switch group 128 are connected through a conducting wire;
the first end of the second switch of the first current switch group 121 is connected to a voltage signal UAI.e. voltage signal UAThe first switch is connected to a second access terminal of the access terminal row 202, and then the second access terminal is connected to a first terminal of a second switch through a lead; a first end of a third switch of the first current switch group 121 is connected to a ground wire, that is, the ground wire is connected to a third access terminal of the access terminal row 202, and then the third access terminal is connected to the first end of the third switch through a conducting wire; a first end of the fifth switch of the first current switch group 121 is connected to a voltage signal UCI.e. voltage signal UCThe first switch is connected to a fifth access terminal of the access terminal row and then connected to a second end of the fifth switch through the fifth access terminal; a first end of a sixth switch of the first current switch group 121 is connected to a ground wire; that is, the ground wire is connected to the sixth access terminal of the access terminal row 202, and then connected to the first end of the sixth switch through the wire by the sixth access terminal.
The second terminal of the second switch of the first current switch group 121, the second terminal of the third switch of the second current switch group 122, the second terminal of the second switch of the third current switch group 123, the second terminal of the third switch of the fourth current switch group 124, the second terminal of the fifth switch of the fifth current switch group 125, the second terminal of the sixth switch of the sixth current switch group 126, the second terminal of the fifth switch of the seventh current switch group 127 and the second terminal of the sixth switch of the eighth current switch group 128 are connected by a conducting wire, the second terminal of the third switch of the first current switch group 121, the second terminal of the second switch of the second current switch group 122, the second terminal of the third switch of the third current switch group 123, the second terminal of the second switch of the fourth current switch group 124, the second terminal of the sixth switch of the fifth current switch group 125, the second terminal of the fifth switch of the sixth current switch group 126, the second terminal of the seventh current switch group 127 and the second terminal of the eighth current switch group 128 are connected by a conducting wire A second end of the fifth switch of the first current switch group 121, a second end of the fifth 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 second switch of the fifth current switch group 125, a second end of the second switch of the sixth current switch group 126, a second end of the third current switch of the seventh current switch group 127, and a second end of the third switch of the eighth current switch group 128 are connected by a conducting wire, 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 fifth 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 third switch of the fifth current switch group 125, a second end of the third switch of the sixth current switch group 126, a second end of the seventh current switch group 127, and a second end of the eighth current switch group 128 are connected by a conducting wire Are connected.
The first current switch group 121 is controlled to be closed, and the second signal terminal 2 is connected with a voltage signal UAThe third signal terminal 3 is connected to the ground wire, and the fifth signal terminal 5 is connected to the voltage signal UCThe sixth signal terminal 6 is connected to the ground line, and the phase sequence of the current measured by the current measuring module 151 is IAICThe current phase sequence is IAICThe current phase sequence indicator light 162 is on; the second current switch group 122 is controlled to be closed, the second signal terminal 2 is connected to the ground wire, and the third signal terminal 3 is connected to the voltage signal UAThe fifth signal terminal 5 is connected with a voltage signal UCThe sixth signal terminal 6 is connected to the ground line, and the phase sequence of the current measured by the current measuring module 151 is-IAICThe current phase sequence is-IAICThe current phase sequence indicator light 162 is on; the third current switch is controlled to be closed, and the second signal terminal 2 is connected with a voltage signal UAThe third signal terminal 3 is connected to the ground, the fifth signal terminal 5 is connected to the ground, and the sixth signal terminal 6 is connected to the voltage signal UCThe phase sequence of the current measured by the current measuring module 151 is IA-ICThe current phase sequence is IA-ICThe current signal lamp is on; control the fourth current switch to be closed, secondThe signal terminal 2 is connected with a ground wire, and the third signal terminal 3 is connected with a voltage signal UAThe fifth signal terminal 5 is connected to the ground wire, and the sixth signal terminal 6 is connected to the voltage signal UCWhen the phase sequence of the current measured by the current measuring module 151 is-IA-ICThe current phase sequence is-IA-ICThe current phase sequence indicator light 162 is on; the fifth current switch group 125 is controlled to be closed, and the second signal terminal 2 is connected with a voltage signal UCThe third signal terminal 3 is connected to the ground wire, and the fifth signal terminal 5 is connected to the voltage signal UAWhen the sixth signal terminal 6 is connected to the ground, the phase sequence of the current measured by the current measuring module 151 is ICIAThe current phase sequence is ICIAThe current phase sequence indicator light 162 is on; the sixth current switch is controlled to be closed, the second signal terminal 2 is connected to the ground wire, and the third signal terminal 3 is connected to the voltage signal UCThe fifth signal terminal 5 is connected with a voltage signal UAWhen the sixth signal terminal 6 is connected to the ground, the current phase sequence measured by the current metering module 151 is-ICIAThe current phase sequence is-ICIAThe current phase sequence indicator light 162 is on; the seventh current switch is controlled to be closed, and the second signal terminal 2 is connected with a voltage signal UCThe third signal terminal 3 is connected to the ground, the fifth signal terminal 5 is connected to the ground, and the sixth signal terminal 6 is connected to the voltage signal UAWhen the phase sequence of the current measured by the current measuring module 151 is IC-IAThe current phase sequence is IC-IAThe current phase sequence indicator light 162 is on; the eighth current switch group 128 is controlled to be closed, the second signal terminal 2 is connected to the ground wire, and the third signal terminal 3 is connected to the voltage signal UCU is connected to the ground wire at the fifth signal terminal 5 and the voltage signal at the sixth signal terminal 6AThe phase sequence of the current measured by the current measuring module 151 is-IC-IAThe current phase sequence is-IC-IAThe current phase sequence indicator light 162 is on.
The manner of controlling 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 and the eighth current switch group 128 to be opened and closed may be controlled by manual operation, or may be controlled by a logic circuit of the controller 12, and by controlling the opening and closing of each current switch group, various current phase sequence conditions of the power production field can be set, and an operator can know various current phase sequence conditions of the power production field, so that the actual operation service level of the operator can be effectively improved, and the type of the current phase sequence can be identified through own detection operation, so as to complete an assessment task, and effectively assess the service level of the operator. In addition, the current phase sequence indicator lamp 162 of each current phase sequence can know the current phase sequence currently connected.
In this embodiment, through the control of each voltage switch group and each current switch group, the connection types of the different 48 voltage phase sequence and current phase sequence can be set, so that an operator can fully know the 48 different connection types of the electric energy meter, perform the setting operation, set various conditions of an electric power production field, and can meet the training and examination requirements of the operator of the electric power system.
The training device further comprises a joint junction box 13, the joint junction box 13 comprises at least seven groups of connecting terminals and an external module for externally connecting the accessed circuit, each group of connecting terminals is provided with a connecting input terminal and a connecting output terminal in one-to-one correspondence, the external module is arranged between the connecting input terminal and the connecting output terminal, the connecting output terminals of the joint junction box 13 are in one-to-one correspondence with the first signal terminal 1, the second signal terminal 2, the third signal terminal 3, the fourth signal terminal 4, the fifth signal terminal 5, the sixth signal terminal 6 and the seventh signal terminal 7, and the connecting input terminals are respectively connected with the second ends of the current switch group switches and the second ends of the voltage switch group switches in one-to-one correspondence. Wherein the lead wires connecting the input terminals to the second ends of the current switch bank switches and the voltage switch bank switches pass through the wire through holes 201.
That is, a signal inputted from the connection input terminal, and the corresponding connection output terminal can output the same signal.
Specifically, the first signal terminal 1, the fourth signal terminal 4 and the fifth signal terminal 5 are respectively and correspondingly connected to three connection input terminals of the joint junction box 13, the first signal terminal 1 is connected to a first connection input terminal on the joint junction box 13 through a wire, a first connection output terminal corresponding to the first connection input terminal is connected to the second end of the first switch through a wire, the fourth signal terminal 4 is connected to a fourth connection input terminal on the joint junction box 13 through a wire, and a fourth connection output terminal corresponding to the fourth connection input terminal is connected to the second end of the fourth switch through a wire; the seventh signal terminal 7 is connected to a seventh connection input terminal on the joint terminal box 13 through a wire, and a fifth connection output terminal corresponding to the fifth connection input terminal is connected to the second end of the seventh switch through a wire.
The second signal terminal 2 is connected with the second connection input terminal on the joint junction box 13 through a lead, the second connection output terminal corresponding to the second connection input terminal is connected with the second end of the second switch through a lead, the third signal terminal 3 is connected with the third connection input terminal on the joint junction box 13 through a lead, the third connection output terminal corresponding to the third connection input terminal is connected with the second end of the third switch through a lead,
the fifth signal terminal 5 is connected with a fifth connection input terminal on the joint junction box 13 through a wire, a fifth connection output terminal corresponding to the fifth connection input terminal is connected with a second end of the fifth switch through a wire, the sixth signal terminal 6 is connected with a sixth connection input terminal on the joint junction box 13 through a wire, and a sixth connection output terminal corresponding to the sixth connection input terminal is connected with a second end of the sixth switch through a wire.
The combined junction box 13 is used 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 13, the combined junction box 13 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 quickly recognize the combined junction box 13 conveniently, and the simulated maintenance can be carried out on the field truly and specifically.
The system 10 further comprises a voltage amplitude display 181 and a current amplitude display 182, wherein the voltage amplitude display 181 is connected with the voltage metering module 152, and the current amplitude display 182 is connected with the current metering module 151.
The voltage value detected by the voltage metering module 152 is displayed on the voltage amplitude display 181, and the current value detected by the current metering module 151 is displayed on the current amplitude display 182, so that the voltage signal and the current signal can be measured by an operator through operation.
Wherein, the training cabinet provided by this embodiment, the control panel 1010 and the operation panel jointly form a station, the training cabinet can include a plurality of stations, that is, a plurality of control panels 1010 and an operation panel, the plurality of stations are connected in parallel to six power signals input by the power circuit, in an actual training center, more people can use different stations of the same training cabinet to train and study simultaneously, since each station is connected in parallel to the power circuit, the stations are not affected by each other, each station can operate independently, and the setting of 48 wiring types at most can be completed, so that the use efficiency of the training cabinet can be effectively improved, the training and examination efficiency of the training center can be improved, meanwhile, the use efficiency of the power circuit can be effectively improved by using the same power circuit through the parallel connection of the stations, reduces the energy consumption in the practical use process and has stronger economic benefit.
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 (6)

1. A parallel type high-voltage electric energy metering simulation wiring training cabinet is characterized by comprising a control panel and an operation panel, wherein the control panel comprises a controller, the operation panel comprises an electric energy metering device, the electric energy metering device comprises a voltage metering module and a current metering module, the voltage metering module comprises three voltage signal terminals, and the current metering module comprises two first current signal terminals and two second current signal terminals; the controller comprises a plurality of groups of control switch groups;
each control switch group is connected with a voltage signal UABReference voltage signal and voltage signal UCBAnd a voltage signal UAVoltage signal UCThe control switch group is used for connecting the three voltage signal terminals with the voltage signal UABThe reference voltage signal and the voltage signal UCBRespectively carrying out signal connection or disconnection to the first current signal terminal, the second current signal terminal and the voltage signal UAThe voltage signal UCThe ground wire is connected or disconnected; the three voltage signal terminals accessed by each control switch group are different in sequence, and the two first current signal terminals and the two second current signal terminals accessed by each control switch group are different in sequence;
one of the two first current signal terminals is always connected with the ground wire, and the other first current signal terminal is connected with the voltage signal UAThe voltage signal UCA voltage signal of; one of the two second current signal terminals is always connected with the ground wire, and the other second current signal terminal is connected with the voltage signal UAThe voltage signal UCA voltage signal of;
the control switch group comprises a current switch group and a voltage switch group, and the voltage switch group is used for connecting three voltage signal endsSub-sum voltage signal UABReference voltage signal and voltage signal UCBSwitching on or off a voltage signal;
the current switch group is used for connecting the first current signal terminal, the second current signal terminal and the voltage signal UAThe voltage signal UCThe ground wire is connected or disconnected;
the electric energy metering device comprises an electric energy meter, three voltage signal terminals are respectively a first signal terminal, a fourth signal terminal and a seventh signal terminal, two first current signal terminals are respectively a second signal terminal and a third signal terminal, and two second current terminals are respectively a fifth signal terminal and a sixth signal terminal;
the voltage switch group comprises a first switch, a fourth switch and a seventh switch;
the first end of the first switch of each voltage switch group is connected with a voltage signal UABThe second end is respectively connected with any one of the first signal terminal, the fourth signal terminal and the seventh signal terminal;
a first end of a fourth switch of each voltage switch group is connected with a reference voltage signal, and a second end of the fourth switch of each voltage switch group is connected with any one of a first signal terminal, a fourth signal terminal and a seventh signal terminal;
the first end of the seventh switch of each voltage switch group is connected with a voltage signal UCBThe second end is respectively connected with any one of the first signal terminal, the fourth signal terminal and the seventh signal terminal;
the signal terminals accessed by the second ends of the first switch, the fourth switch and the seventh switch of different voltage switch groups are different in sequence;
the current switch group comprises a second switch, a third switch, a fifth switch and a sixth switch;
the first end of the second switch of each current switch group is connected with a voltage signal UAThe second end is connected to one signal terminal of the second signal terminal, the third signal terminal, the fifth signal terminal and the sixth signal terminal;
the first ends of the third switch and the sixth switch of each current switch group are connected with the ground wire, and the second ends of the third switch and the sixth switch are connected with one signal terminal of the second signal terminal, the third signal terminal, the fifth signal terminal and the sixth signal terminal;
the first end of the fifth switch of each current switch group is connected with a voltage signal UCThe second ends of the first and second terminals are connected with one signal terminal of a second signal terminal, a third signal terminal, a fifth signal terminal and a sixth signal terminal;
the second end of the third switch of each current switch group is connected to one of the second signal terminal and the third signal terminal or one of the fifth signal terminal and the sixth signal terminal, the second end of the sixth switch of each current switch group is connected to one of the second signal terminal and the third signal terminal or one of the fifth signal terminal and the sixth signal terminal, and the sequence of the signal terminals connected to the second ends of the second switch, the third switch, the fifth switch and the sixth switch of different current switch groups is different.
2. A parallel high-voltage electric energy metering simulation wiring training cabinet according to claim 1, characterized in that the training cabinet further comprises a joint junction box, the joint junction box comprises at least seven groups of connecting terminals and an external module for connecting an accessed circuit externally, each group of connecting terminals is provided with a connecting input terminal and a connecting output terminal in a one-to-one correspondence, the external module is arranged between the connecting input terminal and the connecting output terminal, the connecting output terminals of the joint junction box are in a one-to-one correspondence 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 and a seventh signal terminal, and each connecting input terminal is respectively connected with the second end of each current switch group switch and the second end of each voltage switch group switch in a one-to-one correspondence.
3. A parallel high-voltage electric energy metering simulation wiring training cabinet according to claim 2, characterized in that the voltage switch groupThe 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 fifth voltage switch group and the first end of the first switch of the sixth voltage switch group are connected through leads, 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 through leads, the first end of the seventh switch of the first voltage switch group, the first end of the seventh switch group, the first end of the sixth voltage switch group, the second end of the sixth switch group and the second end of the fourth switch group are connected through leads, 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 through leads, and the first end of the first switch of the first voltage switch group is connected with a voltage signal UABA first end of a fourth switch of the first voltage switch group is connected with a reference voltage signal, and a first end of a seventh switch of the first voltage switch group is connected with a voltage signal UCB；
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 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.
4. A parallel high-voltage electric energy metering simulation wiring training cabinet according to claim 3, wherein the current switch group comprises 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 and an eighth current switch group;
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 and the first end of the second switch of the eighth current switch group are connected through leads;
the first end of the third switch of the first current switch group, the first end of the third switch of the second current switch group, the first end of the third switch of the third current switch group, the first end of the third switch of the fourth current switch group, the first end of the third switch of the fifth current switch group, the first end of the third switch of the sixth current switch group, the first end of the third switch of the seventh current switch group and the first end of the third switch of the eighth current switch group are connected through a lead;
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 and the first end of the fifth switch of the eighth current switch group are connected through a lead;
the first end of the sixth switch of the first current switch group, the first end of the sixth switch of the second current switch group, the first end of the sixth switch of the third current switch group, the first end of the sixth switch of the fourth current switch group, the first end of the sixth switch of the fifth current switch group, the first end of the sixth switch of the sixth current switch group, the first end of the sixth switch of the seventh current switch group and the first end of the sixth switch of the eighth current switch group are connected through a lead;
the first end of the second switch of the first current switch group is connected with a voltage signal UAThe first end of the third switch of the first current switch group is connected to the ground wire, and the first end of the fifth switch of the first current switch group is connected to the voltage signal UCThe first end of the sixth switch of the first current switch group is connected with a ground wire;
the second end of the second 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 second 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 fifth 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 fifth switch of the seventh current switch group and the second end of the sixth switch of the eighth current switch group are connected through a lead, and the second end of the sixth switch of the eighth current switch group is connected with the third signal terminal through a lead;
the second end of the third 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 third 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 sixth 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 sixth switch of the seventh current switch group and the second end of the fifth switch of the eighth current switch group are connected through a lead, and the second end of the fifth switch of the eighth current switch group is connected with the second signal terminal through a lead;
the second end of the fifth 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 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 second 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 current switch of the seventh current switch group and the second end of the third switch of the eighth current switch group are connected through a lead, and the second end of the third switch of the eighth current switch group is connected with a fifth signal terminal through a lead;
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 fifth 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 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 and the second end of the second switch of the eighth current switch group are connected through a lead, and the second end of the second switch of the eighth current switch group is connected with the sixth signal terminal through a lead.
5. A parallel high-voltage electric energy metering simulation wiring training cabinet according to claim 1, wherein the voltage switch group further comprises a voltage phase sequence indicator light switch, the current switch group further comprises a current phase sequence indicator light switch, and the control panel further comprises a voltage phase sequence indicator light corresponding to the voltage phase sequence indicator light switch and a current phase sequence indicator light corresponding to the current phase sequence indicator light switch;
the controller also comprises a load circuit, wherein the input end of the load circuit is arranged between the current switch group and the current metering module or the voltage signal UAAnd said voltage signal UCBefore the first ends of the switches of the current switch group are connected, the load circuit is connected and used for connecting the voltage signal UAConverted into a current signal IAAnd the voltage signal UCSwitching current signalNumber IC。
6. A parallel high-voltage electric energy metering simulation wiring training cabinet as claimed in claim 5, wherein the control panel further comprises a capacitive switch, a capacitive indicator light, an inductive indicator light, a voltage amplitude display and a current amplitude display, the capacitive indicator light and the inductive indicator light are connected with a load circuit, the capacitive switch is arranged in the load circuit, the load circuit comprises a capacitive load and an inductive load, the capacitive switch is used for controlling the load circuit to be connected with the capacitive load, the voltage amplitude display is connected with the voltage metering module, and the current amplitude display is connected with the current metering module.
CN202010466538.7A 2020-05-28 2020-05-28 Parallel high-voltage electric energy metering simulation wiring training cabinet Active CN111415545B (en)

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CN112150879A (en) * 2020-09-25 2020-12-29 广东电网有限责任公司 Multi-station high-voltage electric energy metering simulation wiring training cabinet

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