CN114649868A - Measurement and control device and electrical cabinet - Google Patents

Measurement and control device and electrical cabinet Download PDF

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Publication number
CN114649868A
CN114649868A CN202210424456.5A CN202210424456A CN114649868A CN 114649868 A CN114649868 A CN 114649868A CN 202210424456 A CN202210424456 A CN 202210424456A CN 114649868 A CN114649868 A CN 114649868A
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CN
China
Prior art keywords
circuit breaker
bus
voltage
current
controller
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210424456.5A
Other languages
Chinese (zh)
Inventor
王川
张衍奎
朱建华
鲍伟
田新宇
马伟伟
姚婷
闫亮
靳毅
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ningxia Kaichen Electric Group Co ltd
Original Assignee
Ningxia Kaichen Electric Group Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ningxia Kaichen Electric Group Co ltd filed Critical Ningxia Kaichen Electric Group Co ltd
Priority to CN202210424456.5A priority Critical patent/CN114649868A/en
Publication of CN114649868A publication Critical patent/CN114649868A/en
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/24—Circuit arrangements for boards or switchyards
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/26—Casings; Parts thereof or accessories therefor
    • H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/26—Casings; Parts thereof or accessories therefor
    • H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
    • H02B1/32—Mounting of devices therein
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B11/00—Switchgear having carriage withdrawable for isolation
    • H02B11/02—Details
    • H02B11/10—Indicating electrical condition of gear; Arrangement of test sockets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B11/00—Switchgear having carriage withdrawable for isolation
    • H02B11/12—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal
    • H02B11/167—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal truck type
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B11/00—Switchgear having carriage withdrawable for isolation
    • H02B11/26—Arrangements of fuses, resistors, voltage arresters or the like
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00016—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using a wired telecommunication network or a data transmission bus
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
    • H02J13/00036—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
    • H02J13/00036—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers
    • H02J13/0004—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers involved in a protection system

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Human Computer Interaction (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Abstract

The application provides a measurement and control device and regulator cubicle for carry out data monitoring and control to electric power system, this measurement and control device includes: the circuit comprises a man-machine interaction unit, a voltage protection unit, a current protection unit and a circuit breaker state detection control unit, wherein the man-machine interaction unit, the voltage protection unit, the current protection unit and the circuit breaker state detection control unit are connected through a bus, the detection control unit is functionally split according to the scheme, corresponding functional devices are integrated and combined nearby to form integrated functional units, then different integrated functional units are communicated in an information sharing mode through the bus, and therefore the devices in a single integrated functional unit are simple to install and wire, the different integrated functional units are simple and convenient to connect and wire through the bus, the problem that the circuit of the existing high-voltage power distribution device is complex and redundant is solved, the cost of circuit materials is saved, and the circuit is low in carbon and easy to install.

Description

Measurement and control device and electrical cabinet
Technical Field
The application relates to the technical field of power supply and distribution, in particular to a measurement and control device and an electrical cabinet.
Background
In recent years, green and low carbon become mainstream, and in the high-voltage distribution device of the current power supply and distribution system, the devices matched with each other for detection and control are separated, so that the wiring span of the devices separated and arranged is large and the wiring is messy, for example, the current transformer is arranged in a cable chamber of an electrical cabinet, the protection device is arranged on a cabinet door, the wiring of the current transformer and the protection device needs to cross over a circuit breaker chamber and an instrument chamber, so that the wiring span between the devices is large and the wiring is messy and tedious, and the circuit is complex and redundant in the high-voltage distribution device.
Disclosure of Invention
An object of the embodiment of the application is to provide a measurement and control device and regulator cubicle for solve the device that mutually supports among the present high-voltage distribution device and separate the wiring span between the device that sets up and bring and the wiring is in disorder complicated circuit and the redundant problem that exists.
In a first aspect, the present invention provides a measurement and control device for monitoring and controlling data of an electric power system, including: the device comprises a human-computer interaction unit, a voltage protection unit, a current protection unit and a circuit breaker state detection control unit, wherein the human-computer interaction unit, the voltage protection unit, the current protection unit and the circuit breaker state detection control unit are connected through a bus; the voltage protection unit is used for monitoring voltage data of the power system, determining whether to perform voltage protection based on the monitored voltage data, and synchronizing the monitored voltage data to other components through a bus; the current protection unit is used for monitoring current data of the power system, determining whether to perform current protection based on the monitored current data, and synchronizing the monitored current data to other components through a bus; the circuit breaker state detection control unit is used for monitoring the states of a circuit breaker and/or an isolation handcart of the power system, determining whether to switch on and off the circuit breaker and/or the isolation handcart based on the states of the circuit breaker and/or the isolation handcart, and synchronizing the states of the circuit breaker and/or the isolation handcart to other components through a bus; and the man-machine interaction unit is used for receiving the monitoring data synchronized by other assemblies through the bus, displaying the received monitoring data, receiving the operation information, and issuing corresponding operation instructions to the corresponding assemblies through the bus based on the operation information.
The measurement and control device of above-mentioned design, this scheme will detect the control element and carry out the function split, form integrated function unit with the close integrated combination of corresponding functional device, for example, voltage protection unit, current protection unit etc., then the mode that passes through the bus with different integrated function units realizes the information sharing communication between the different integrated units, thereby it is simple to make the device in the single integrated function unit install the wiring nearby, it is simple and convenient to connect the wiring through the bus between the different integrated function units, thereby solve present high voltage distribution device's complicated and redundant problem of circuit, thereby practice thrift the cost of circuit material and have the advantage of low carbon and easy installation.
In an optional implementation manner of the first aspect, the voltage protection unit includes a voltage controller, a first bus communication element, and a first analog-to-digital conversion element, the voltage controller is connected to the bus through the first bus communication element, and the voltage controller is connected to the first analog-to-digital conversion element; the first analog-to-digital conversion element is used for being connected with a voltage detection device of the power system so as to perform analog-to-digital conversion on voltage data detected by the voltage detection device and then transmit the voltage data to the voltage controller; and the voltage controller is used for determining whether to perform voltage protection based on the voltage data after analog-to-digital conversion, and synchronously connecting the voltage data after analog-to-digital conversion with other components connected with the bus through the first bus communication element.
In an optional implementation manner of the first aspect, the current protection unit includes a current controller, a second bus communication element, and a second analog-to-digital conversion element, the current controller is connected to the bus through the second bus communication element, and the current controller is connected to the second analog-to-digital conversion element; the second analog-to-digital conversion element is used for being connected with a current detection device of the power system so as to perform analog-to-digital conversion on current data detected by the current detection device and then transmit the current data to the current controller; and the current controller is used for determining whether to perform current protection or not based on the current data subjected to analog-to-digital conversion, and synchronously connecting the current data subjected to analog-to-digital conversion with other components connected with the bus through the second bus communication element.
In an optional implementation manner of the first aspect, the circuit breaker state detection control unit includes a circuit breaker controller, a third bus communication element, a switching value input element, and a switching value output element, the circuit breaker controller is connected to the bus through the third bus communication element, and the circuit breaker controller is connected to a circuit breaker and/or an isolation handcart of the power system through the switching value input element and the switching value output element; the circuit breaking controller is used for detecting the state of the circuit breaker and/or the isolated handcart through the switching value input element and synchronously connecting the state of the circuit breaker and/or the isolated handcart with other assemblies of the bus through the third bus communication element; and when receiving a switching-on and switching-off command, the circuit breaker and/or the isolation handcart are/is driven by the switching value output element so as to switch off the circuit breaker or the isolation handcart.
In an optional implementation manner of the first aspect, the human-computer interaction unit includes a human-computer interaction controller, a fourth bus communication element, a display screen element, and an operation element, the human-computer interaction controller is connected to the bus through the fourth bus communication element, and the human-computer interaction controller is connected to the display screen element and the operation element respectively; the human-computer interaction controller is used for receiving monitoring data of other components synchronized through the bus through the fourth bus communication element and displaying the monitoring data through the display screen element; and the operation component is also used for receiving operation information through the operation element and issuing a corresponding operation instruction to a corresponding component through the bus based on the operation information.
According to the embodiment of the design, controllers are independently designed in the voltage protection unit, the current protection unit, the circuit breaker state detection control unit and the human-computer interaction unit, so that each functional unit can perform its own functions, and distributed calculation processing is performed on respective data, so that the data monitoring and control efficiency is improved.
In an optional embodiment of the first aspect, at least one of the voltage protection unit and the current protection unit is connected to a circuit breaker of the power system through a circuit breaker control signal line to send a control signal to the circuit breaker in case of abnormal monitoring data.
In an optional implementation manner of the first aspect, the circuit breaker control signal lines include multiple circuit breaker control signal lines, and the multiple circuit breaker control signal lines transmit a circuit breaker opening control signal, a circuit breaker closing control signal, a circuit breaker opening state signal, and a circuit breaker closing state signal, respectively.
In an optional implementation manner of the first aspect, at least one of the voltage protection unit and the current protection unit is connected to an isolation handcart of the power system through an isolation handcart control signal line, so as to send a control signal to the isolation handcart in the case of abnormal monitoring data.
In an optional implementation manner of the first aspect, the isolation handcart control signal line includes a plurality of isolation handcart control signal lines, and the plurality of isolation handcart control signal lines respectively transmit an isolation handcart experiment position signal and an isolation handcart working position signal.
According to the embodiment of the design, the special circuit breaker control signal line/isolation handcart control signal line is designed between the current protection unit and the voltage protection unit and the circuit breaker, so that under the abnormal condition of current/voltage, the current protection unit and the voltage protection unit can directly control the circuit breaker/isolation handcart, the time delay is reduced under the abnormal condition, and the protection timeliness is realized.
In a second aspect, the invention provides an electrical cabinet, which includes an electrical cabinet body and the measurement and control device of any one of the foregoing embodiments, wherein the electrical cabinet body includes a cabinet body and a cabinet door connected to the cabinet body, the cabinet body includes an instrument room, a circuit breaker room and a cable room, the circuit breaker room is disposed above the cable room, and the instrument room is disposed above the circuit breaker room; the human-computer interaction unit set up in on the cabinet door, voltage protection unit set up in the instrument room, circuit breaker state detection control unit set up in the circuit breaker is indoor, the current protection unit set up in the cable chamber.
According to the electrical cabinet designed above, because the electrical cabinet comprises the measurement and control device of the first aspect, information sharing communication among different integrated units is realized in a bus mode through different integrated functional units of the designed electrical cabinet, so that other device chambers are not required to be spanned in connection among devices, the problems of complexity and redundancy of the circuit of the existing electrical cabinet are solved, the cost of circuit materials is saved, and the electrical cabinet has the advantages of low carbon and easiness in installation.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
Fig. 1 is a first structural schematic diagram of a measurement and control device provided in an embodiment of the present application;
fig. 2 is a schematic diagram of a first structure of a voltage protection unit according to an embodiment of the present disclosure;
fig. 3 is a second structural diagram of a voltage protection unit according to an embodiment of the present disclosure;
fig. 4 is a schematic diagram of a first structure of a current protection unit according to an embodiment of the present application;
fig. 5 is a schematic diagram of a second structure of a current protection unit according to an embodiment of the present application;
fig. 6 is a schematic diagram of a first structure of a circuit breaker state detection control unit according to an embodiment of the present application;
fig. 7 is a second structural schematic diagram of a circuit breaker state detection control unit according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of a human-computer interaction unit according to an embodiment of the present application;
fig. 9 is a second schematic structural diagram of the measurement and control device provided in the embodiment of the present application;
fig. 10 is a schematic structural diagram of an electrical cabinet according to an embodiment of the present application.
Icon: 1-an electrical cabinet; 2-the electrical cabinet body; 3-a measurement and control device; 4-a cabinet body; 5-a cabinet door; 6-instrument room; 7-a circuit breaker chamber; 8-a cable chamber; a-a circuit breaker; a CAN-bus; 10-a human-computer interaction unit; 110-a human-machine interaction controller; 120-a fourth bus communication element; 130-a display screen element; 140-an operating element; 20-a voltage protection unit; 210-a voltage controller; 220 — a first bus communication element; 230-a first analog-to-digital conversion element; 30-a current protection unit; 310-a current controller; 320-a second bus communication element; 330-a second analog-to-digital conversion element; 40-a circuit breaker state detection control unit; 410-a circuit break controller; 420-a third bus communication element; 430-switching value input element; 4310-opening the isolation handcart; 4320-circuit breaker state open; 440-a switching value output element; 4410-a circuit breaker closing control relay; 4420-breaker opening control relay; 4430-isolating handcart experimental position relay; 4440-isolating handcart working position relay; 50-circuit breaker control signal line; 50 a-first breaker control signal line; 50 b-second breaker control signal line.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.
The embodiment of the application provides a measurement and control device, and this measurement and control device CAN be used to carry out data monitoring and control to electric power system, as shown in fig. 1, this measurement and control device includes human-computer interaction unit 10, voltage protection unit 20, current protection unit 30 and circuit breaker state detection control unit 40, and this human-computer interaction unit 10, voltage protection unit 20, current protection unit 30 and circuit breaker state detection control unit 40 pass through bus CAN and connect.
In the measurement and control device with the above design, the voltage protection unit 20 is configured to monitor voltage data of the power system, determine whether to perform voltage protection based on the monitored voltage data, and synchronize the monitored voltage data to other components through the bus CAN, for example, the voltage protection unit 20 may receive the secondary side voltage of the power system converted by the voltage transformer device for monitoring and protection.
The current protection unit 30 is configured to detect current data of the power system, determine whether to perform current protection based on the monitored current data, and synchronize the monitored current data to other components through the bus CAN, for example, the current protection unit 30 may detect three-phase current data of the power system and perform corresponding three-phase current protection.
The circuit breaker state detection control unit 40 is used for monitoring the states of a circuit breaker and/or an isolation handcart of the power system, determining whether to switch on and off the circuit breaker and/or the isolation handcart based on the states of the circuit breaker and/or the isolation handcart, and synchronizing the states of the circuit breaker and/or the isolation handcart to other components through a bus CAN; the human-computer interaction unit 10 is configured to receive monitoring data of other components synchronized through the bus CAN, display the received monitoring data, receive operation information, and issue a corresponding operation instruction to the corresponding component through the bus CAN based on the operation information, for example, the human-computer interaction unit 10 displays voltage data monitored by the voltage protection unit 20.
The measurement and control device of above-mentioned design, this scheme will detect the control element and carry out the function split, form integrated function unit with the close integrated combination of corresponding functional device, for example, voltage protection unit 20, current protection unit 30 etc., then realize the information sharing communication between the different integrated function units through bus CAN's mode with different integrated function units, thereby make the device in the single integrated function unit install the wiring nearby simple, it is simple and convenient to connect the wiring through bus CAN between the different integrated function units, thereby solve present high voltage distribution device's complicated and redundant problem of circuit, thereby practice thrift the cost of line material and have the advantage of low carbon and easy installation.
In an alternative embodiment of this embodiment, as shown in fig. 2, the voltage protection unit 20 includes a voltage controller 210, a first bus communication element 220, and a first analog-to-digital conversion element 230, the voltage controller 210 is connected to the bus CAN through the first bus communication element 220, and the voltage controller 210 is connected to the first analog-to-digital conversion element 230.
In the voltage protection unit 20 designed above, the first analog-to-digital conversion element 230 is used for being connected to a voltage detection device of the power system, so as to perform analog-to-digital conversion on voltage data detected by the voltage detection device and transmit the voltage data to the voltage controller 210, wherein the voltage detection device may be a voltage transformer; the voltage controller 210 determines whether to perform voltage protection based on the analog-to-digital converted voltage data, and synchronizes the analog-to-digital converted voltage data with other components connected to the bus CAN through the first bus communication element 220.
Specifically, as shown in fig. 3, the voltage protection unit 20 may be connected to an a-phase voltage connection terminal, a B-phase voltage connection terminal, a C-phase voltage connection terminal, and a zero-sequence voltage connection terminal of the voltage transformer, so that the voltage protection unit 20 may be connected to a corresponding voltage transformer, and monitoring of each phase of secondary-side voltage data converted by the voltage transformer is achieved.
In an alternative embodiment of the present embodiment, as shown in fig. 4, the current protection unit 30 includes a current controller 310, a second bus communication element 320, and a second analog-to-digital conversion element 330, the current controller 310 is connected to the bus CAN through the second bus communication element 320, and the current controller 310 is connected to the second analog-to-digital conversion element 330.
The second analog-to-digital conversion element 330 is used for being connected with a current detection device of the power system, so as to perform analog-to-digital conversion on current data detected by the current detection device and transmit the current data to the current controller 310; and the current controller is used for determining whether to perform current protection or not based on the current data subjected to analog-to-digital conversion, and synchronously connecting the current data subjected to analog-to-digital conversion with other components connected with the bus CAN through the second bus communication element.
Specifically, as shown in fig. 5, the current controller 310 may be connected to the a-phase measuring current terminal, the B-phase measuring current terminal, the C-phase measuring current terminal, the a-phase protection current terminal, the B-phase protection current terminal, the C-phase protection current terminal, and the zero-sequence protection current terminal of the current detecting device through the second analog-to-digital converting element 330, so as to receive the current data detected by the current detecting device, perform analog-to-digital conversion, and implement corresponding protection control; in addition, the current controller 310 can also be connected with the grounding switch to monitor the grounding switch state; and the grounding switch can be connected with a grounding switch control interface to realize the on-off control of the grounding switch.
In an alternative embodiment of the present embodiment, as shown in fig. 6, the breaker state detection control unit 40 includes a breaking controller 410, a third bus communication element 420, a switching value input element 430, and a switching value output element 440, the breaking controller 410 is connected to the bus CAN through the third bus communication element 420, and the breaking controller 410 is connected to the breaker of the power system through the switching value input element 430 and the switching value output element 440;
in the above-designed circuit breaker state detection control unit 40, the circuit breaker controller 410 detects the state of the circuit breaker and/or the isolated trolley through the switching value input element 430, and synchronizes the state of the circuit breaker and/or the isolated trolley with other components connected to the bus CAN through the third bus communication element 420; and when receiving a switching-on/off command, the circuit breaker and/or the isolation handcart are/is driven by the switching value output element 440 to switch off the circuit breaker or the isolation handcart.
Specifically, as shown in fig. 7, the switching value input element 430 may include an isolation handcart position switch-in 4310 and a circuit breaker state switch-in 4320, wherein the circuit breaker controller 410 may detect the current state of the isolation handcart through the isolation handcart position switch-in 4310, and may detect the current state of the circuit breaker through the circuit breaker state switch-in 4320.
The switching value output element 440 may include a breaker closing control relay 4410, a breaker opening control relay 4420, an isolated handcart experimental position relay 4430 and an isolated handcart working position relay 4440, wherein the circuit breaking controller 410 may control the breaker closing control relay 4410 to control the circuit breaking to realize the connection of the power system after receiving a breaker closing signal, and the circuit breaking controller 410 may control the breaker opening through the breaker opening control relay 4420 after receiving a breaker opening signal to realize the isolation of the power system; similarly, the circuit breaking controller 410 can control the isolated handcart to be at the experimental position through the isolated handcart experimental position relay 4430 when receiving the isolated handcart experimental position signal, thereby realizing the connection of the power system; the circuit breaking controller 410 can control the isolation handcart to be in the working position through the isolation handcart working position relay 4440 when receiving the isolation handcart working position signal, thereby realizing the isolation of the power system.
In an alternative embodiment of this embodiment, as shown in fig. 8, the human-computer interaction unit 10 includes a human-computer interaction controller 110, a fourth bus communication element 120, a display screen element 130, and an operation element 140, the human-computer interaction controller 110 is connected to the bus CAN through the fourth bus communication element 120, and the human-computer interaction controller 110 is connected to the display screen element 130 and the operation element 140 respectively.
In the human-computer interaction unit 10 with the above design, the human-computer interaction controller 110 receives the monitoring data synchronized by other components through the bus CAN through the fourth bus communication element 120, displays the monitoring data through the display screen element 130, receives the operation information through the operation element 140, and issues the corresponding operation instruction to the corresponding component through the bus CAN based on the operation information.
Specifically, the human-computer interaction controller 110 may be connected to the circuit breaker controller through the RS485 communication interface, so as to receive the switching on/off operation of the circuit breaker operated by the user on the operation element 140, and further send a switching on/off signal of the circuit breaker to the circuit breaker controller 410 through the RS485 communication interface, so that the circuit breaker controller 410 controls the circuit breaker to implement a corresponding switching on/off operation according to the corresponding switching on/off signal.
In an alternative embodiment of this embodiment, at least one of the voltage protection unit 20 and the current protection unit 30 is connected to the circuit breaker a through a circuit breaker control signal line 50 to send a control signal to the circuit breaker in case of an abnormality of the monitoring data. The circuit breaker control signal line 50 may include a plurality of circuit breaker control signal lines 50, and the plurality of circuit breaker control signal lines 50 transmit a circuit breaker open control signal, a circuit breaker close control signal, a circuit breaker open state signal, and a circuit breaker close state signal, respectively.
For example, as shown in fig. 9, the current protection unit 30 is connected to the circuit breaker a through two circuit breaker control signal lines 50, wherein one first circuit breaker control signal line 50a transmits a circuit breaker opening control signal, and the other second circuit breaker control signal line 50b transmits a circuit breaker closing control signal, when the current protection unit 30 detects that a current has a fault, the circuit breaker opening control signal can be transmitted through the first circuit breaker control signal line 50a, so as to directly control the circuit breaker a, thereby achieving the timeliness of protection. After the fault is cut off, the current protection unit 30 may transmit a breaker closing control signal through the second breaker control signal line 50b, thereby restoring the access of the power system in time. Likewise, the voltage protection unit 20 may also directly control the circuit breaker in case of voltage abnormality and voltage abnormality recovery.
Above-mentioned embodiment, this scheme is through the special circuit breaker control signal line of design between current protection unit and voltage protection unit and circuit breaker to make under the current/voltage abnormal conditions, current protection unit and voltage protection unit can directly carry out divide-shut brake control to the circuit breaker, thereby make the divide-shut brake delay of circuit breaker reduce under the abnormal conditions, thereby realize the promptness of protection.
Similarly, the scheme can also be connected with the isolated handcart in the voltage protection unit 20 and the current protection unit 30 through an isolated handcart control signal line, so that a control signal is timely sent to the isolated handcart under abnormal conditions, and the timeliness of protection is realized.
Second embodiment
As shown in fig. 10, the present scheme provides an electrical cabinet 1, where the electrical cabinet 1 includes an electrical cabinet body 2 and a measurement and control device 3 shown in any optional embodiment in the first embodiment, where the electrical cabinet body 2 includes a cabinet body 4 and a cabinet door 5 connected to the cabinet body, the cabinet body 4 includes an instrument room 6, a circuit breaker room 7 and a cable room 8, the circuit breaker room 7 is disposed above the cable room 8, and the instrument room 6 is disposed above the circuit breaker room 7; the man-machine interaction unit 10 is arranged on the cabinet door 5, the voltage protection unit 20 is arranged in the instrument room 6, the breaker state detection control unit 40 is arranged in the breaker room 7, and the current protection unit 30 is arranged in the cable room 8.
Because the designed electrical cabinet 1 comprises the measurement and control device 3 in the first embodiment, information sharing communication among different integrated functional units of the designed electrical cabinet 1 is realized in a bus CAN mode, so that connection among devices does not need to span other device chambers, the problems of complexity and redundancy of the circuit of the conventional electrical cabinet are solved, the cost of circuit materials is saved, and the electrical cabinet has the advantages of low carbon and easiness in installation.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some communication interfaces, and may be in an electrical, mechanical or other form.
In addition, units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
Furthermore, the functional modules in the embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
In this document, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. A measurement and control device is used for carrying out data monitoring and control on an electric power system, and comprises: the circuit breaker state detection control device comprises a human-computer interaction unit, a voltage protection unit, a current protection unit and a circuit breaker state detection control unit, wherein the human-computer interaction unit, the voltage protection unit, the current protection unit and the circuit breaker state detection control unit are connected through a bus;
the voltage protection unit is used for monitoring voltage data of the power system, determining whether to perform voltage protection based on the monitored voltage data, and synchronizing the monitored voltage data to other components through a bus;
the current protection unit is used for monitoring current data of the power system, determining whether to perform current protection based on the monitored current data, and synchronizing the monitored current data to other components through a bus;
the circuit breaker state detection control unit is used for monitoring the states of a circuit breaker and/or an isolation handcart of the power system, determining whether to switch on and off the circuit breaker and/or the isolation handcart based on the states of the circuit breaker and/or the isolation handcart, and synchronizing the states of the circuit breaker and/or the isolation handcart to other components through a bus;
the man-machine interaction unit is used for receiving the monitoring data of other components synchronized through the bus, displaying the received monitoring data, receiving the operation information, and issuing corresponding operation instructions to the corresponding components through the bus based on the operation information.
2. The measurement and control device according to claim 1, wherein the voltage protection unit comprises a voltage controller, a first bus communication element and a first analog-to-digital conversion element, the voltage controller is connected with the bus through the first bus communication element, and the voltage controller is connected with the first analog-to-digital conversion element;
the first analog-to-digital conversion element is used for being connected with a voltage detection device of the power system so as to perform analog-to-digital conversion on voltage data detected by the voltage detection device and then transmit the voltage data to the voltage controller;
and the voltage controller is used for determining whether to perform voltage protection based on the voltage data after analog-to-digital conversion, and synchronously connecting the voltage data after analog-to-digital conversion with other components connected with the bus through the first bus communication element.
3. The measurement and control device according to claim 1, wherein the current protection unit comprises a current controller, a second bus communication element and a second analog-to-digital conversion element, the current controller is connected with the bus through the second bus communication element, and the current controller is connected with the second analog-to-digital conversion element;
the second analog-to-digital conversion element is used for being connected with a current detection device of the power system so as to perform analog-to-digital conversion on current data detected by the current detection device and then transmit the current data to the current controller;
and the current controller is used for determining whether to perform current protection or not based on the current data subjected to analog-to-digital conversion, and synchronously connecting the current data subjected to analog-to-digital conversion with other components connected with the bus through the second bus communication element.
4. The measurement and control device according to claim 1, wherein the breaker state detection control unit comprises a breaker controller, a third bus communication element, a switching value input element and a switching value output element, the breaker controller is connected with the bus through the third bus communication element, and the breaker controller is connected with a breaker and/or an isolation handcart of the power system through the switching value input element and the switching value output element;
the circuit breaking controller is used for detecting the state of the circuit breaker and/or the isolated handcart through the switching value input element and synchronously connecting the state of the circuit breaker and/or the isolated handcart with other assemblies of the bus through the third bus communication element; and when receiving a switching-on and switching-off command, the circuit breaker and/or the isolation handcart are/is driven by the switching value output element so as to switch off the circuit breaker or the isolation handcart.
5. The measurement and control device according to claim 1, wherein the human-computer interaction unit comprises a human-computer interaction controller, a fourth bus communication element, a display screen element and an operation element, the human-computer interaction controller is connected with the bus through the fourth bus communication element, and the human-computer interaction controller is respectively connected with the display screen element and the operation element;
the human-computer interaction controller is used for receiving the monitoring data of other components through the bus synchronization through the fourth bus communication element and displaying the monitoring data through the display screen element; and the operation component is also used for receiving operation information through the operation element and issuing a corresponding operation instruction to a corresponding component through the bus based on the operation information.
6. The measurement and control device according to claim 1, wherein at least one of the voltage protection unit and the current protection unit is connected to a circuit breaker of the power system through a circuit breaker control signal line to send a control signal to the circuit breaker in case of abnormal monitoring data.
7. The measurement and control device according to claim 6, wherein the breaker control signal lines comprise a plurality of breaker control signal lines, and the plurality of breaker control signal lines transmit breaker opening control signals, breaker closing control signals, breaker opening status signals, and breaker closing status signals, respectively.
8. The measurement and control device according to claim 1, wherein at least one of the voltage protection unit and the current protection unit is connected with an isolated handcart of the power system through an isolated handcart control signal line so as to send a control signal to the isolated handcart under the condition of abnormal monitoring data.
9. The measurement and control device according to claim 8, wherein the isolated handcart control signal line comprises a plurality of isolated handcart control signal lines, and the isolated handcart control signal lines respectively transmit an isolated handcart experiment position signal and an isolated handcart working position signal.
10. An electrical cabinet, which is characterized by comprising an electrical cabinet body and the measurement and control device as recited in any one of claims 1 to 9, wherein the electrical cabinet body comprises a cabinet body and a cabinet door connected with the cabinet body, the cabinet body comprises an instrument chamber, a circuit breaker chamber and a cable chamber, the circuit breaker chamber is arranged above the cable chamber, and the instrument chamber is arranged above the circuit breaker chamber;
the human-computer interaction unit set up in on the cabinet door, voltage protection unit set up in the instrument room, circuit breaker state detection control unit set up in the circuit breaker is indoor, the current protection unit set up in the cable chamber.
CN202210424456.5A 2022-04-21 2022-04-21 Measurement and control device and electrical cabinet Pending CN114649868A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210424456.5A CN114649868A (en) 2022-04-21 2022-04-21 Measurement and control device and electrical cabinet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210424456.5A CN114649868A (en) 2022-04-21 2022-04-21 Measurement and control device and electrical cabinet

Publications (1)

Publication Number Publication Date
CN114649868A true CN114649868A (en) 2022-06-21

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210424456.5A Pending CN114649868A (en) 2022-04-21 2022-04-21 Measurement and control device and electrical cabinet

Country Status (1)

Country Link
CN (1) CN114649868A (en)

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