CN115459439A - Online monitoring device for automatically switching multiple states of switch cabinet and application method thereof - Google Patents
Online monitoring device for automatically switching multiple states of switch cabinet and application method thereof Download PDFInfo
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- CN115459439A CN115459439A CN202211070302.7A CN202211070302A CN115459439A CN 115459439 A CN115459439 A CN 115459439A CN 202211070302 A CN202211070302 A CN 202211070302A CN 115459439 A CN115459439 A CN 115459439A
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- circuit breaker
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- 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
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- 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
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- 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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/085—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load
- H02H7/0854—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load responsive to rate of change of current, couple or speed, e.g. anti-kickback protection
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- 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]
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- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Human Computer Interaction (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention provides an on-line monitoring device for automatically carrying out multi-state switching on a switch cabinet and an application method thereof. The invention can solve the problems of high labor cost, complex operation, unstable operation caused by abnormal communication and the like in the prior art, can automatically switch to any appointed state in a plurality of states by only sending one instruction, and has the advantages of simple structure, convenient operation, more time-saving switching and higher operation and maintenance efficiency.
Description
Technical Field
The invention relates to the technical field of power equipment, in particular to an on-line monitoring device for automatically switching multiple states of a switch cabinet and an application method using the device.
Background
The operation of traditional medium voltage switchgear dolly and earthing switch can only rely on artifical scene to carry out, and the procedure is loaded down with trivial details, the time is long during switching operation, and the human cost is high to probably take place the accident that endangers life safety. With the development of intelligent and information technology, an electric trolley replaces a manual trolley, and an intelligent medium-voltage switch cabinet with an electric grounding knife replaces a manual grounding knife is born.
The switching operation of intelligence medium voltage switchgear has replaced artifical field operation with remote control's mode, but present a key is in the same direction as accuse and has all been realized by the control backstage, control backstage structure and operation are all more complicated, generally need a key in the same direction as accuse host computer, intelligence prevents the mistake host computer, and will preview earlier, then just can carry out, and one operation needs the backstage to send a plurality of instructions can accomplish, in case the communication goes wrong in operation process, an instruction can not send, a key is in the same direction as accuse just can't accomplish, thereby cause equipment anomaly, can't bring better experience sense for the user.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide an online monitoring device and method for automatically switching multiple states of a switch cabinet, the system and method can solve the problems of high labor cost, complex operation, unstable operation caused by abnormal communication and the like in the prior art, only one instruction needs to be sent to automatically switch to any one specified state in multiple states, the structure is simple, the operation is convenient, the switching is more time-saving, and the operation and maintenance efficiency is higher.
In order to solve the problems, the technical scheme adopted by the invention is as follows:
an on-line monitoring device for automatically switching multiple states of a switch cabinet comprises:
a main control module;
the circuit breaker control module is connected with the main control module and used for acquiring the opening and closing state and the opening and closing coil current of the circuit breaker, transmitting the acquired data to the main control module and performing opening and closing operation on the circuit breaker after receiving an opening and closing command sent by the main control module;
the electric trolley control module is connected with the main control module and used for acquiring the running state of the electric trolley, transmitting the running state to the main control module and carrying out shake-in or shake-out operation on the electric trolley after receiving a shake-in and shake-out command sent by the main control module;
the electric grounding knife control module is connected with the main control module and used for acquiring a position signal of the electric grounding knife, transmitting the position signal to the main control module and carrying out switching-off or switching-on operation on the electric trolley after receiving a switching-on/off command sent by the main control module;
the motor protection module is connected with the main control module and used for collecting current data of the motor of the electric trolley and the motor of the electric grounding knife, transmitting the collected current data to the main control module, and sending a stop operation command if stalling or overtime occurs when the main control module operates the electric trolley and the electric grounding knife, and the motor protection module controls the motor to stop or operate.
The communication control module is connected with the main control module and used for establishing communication with the background system and uploading related information to the background system; the system is also used for receiving an operation instruction of the background system and controlling the corresponding module to execute the corresponding action through the main control module after receiving the operation instruction;
the display module is connected with the main control module and used for displaying state information, opening and closing coil current data and motor current data related to the intelligent medium-voltage switch cabinet; and the manual control switch cabinet is also used for providing an operation interface of the manual control switch cabinet.
The main control module is used for acquiring data of the circuit breaker control module, the electric trolley control module, the electric grounding knife control module and the motor protection module, and displaying the content of the acquired various data through the display module;
the main control module is also used for receiving an operation command of the background system through the communication control module, performing single-step operation or distributed operation on the circuit breaker, the electric trolley and the electric grounding knife, recording an operation result at the same time, and displaying the operation result on the display module.
An embodiment of an application method of an online monitoring device for automatically switching multiple states of a switch cabinet comprises the following steps:
the method is applied to the online monitoring device for automatically switching the multiple states of the switch cabinet to perform online monitoring, and comprises the following steps:
the method comprises the steps that at least one operation parameter of an intelligent medium-voltage switch cabinet detected by a control circuit board is obtained through a main control module, wherein the operation parameter comprises the opening and closing state and opening and closing coil current of a circuit breaker, the operation state of an electric trolley, a position signal of an electric grounding switch and current data of a motor;
the method comprises the steps that a main control module judges which working state an intelligent medium-voltage switch cabinet is in real time, wherein the working state comprises an operation state, a hot standby state, a cold standby state and an overhaul state;
when the main control module receives the state switching instruction, the corresponding operation command is sent to the corresponding acquisition control module of the control circuit board according to the states of the breaker, the electric trolley and the power-on electric grounding switch acquired in real time, so that the corresponding acquisition control module is controlled to execute corresponding actions.
The further scheme is that if the intelligent medium-voltage switch cabinet is in an operating state, when the main control module receives an operating state switching instruction, no operation is executed; when the main control module receives a hot standby state switching instruction, a circuit breaker tripping instruction is sent to the circuit breaker control module; when the main control module receives a cold standby state switching instruction, a circuit breaker tripping instruction is sent to the circuit breaker control module, and after circuit breaker deflection brake-separating state information is received within a specified time, a shaking-out instruction is sent to the electric trolley control module to shake out the electric trolley; when the main control module receives an overhaul state switching instruction, a circuit breaker tripping instruction is sent to the circuit breaker control module, after circuit breaker deflection brake-off state information is received within a set time, a shaking-out instruction is sent to the electric trolley control module, the electric trolley is shaken out, then after the electric trolley is in test position information within the set time, a switch-on instruction is sent to the electric grounding switch control module, and the electric grounding switch is switched on.
A further scheme is that if the intelligent medium-voltage switch cabinet is in a hot standby state, when the main control module receives an operation state switching instruction, a closing instruction is sent to the circuit breaker control module, and the circuit breaker is closed; when the main control module receives the hot standby state switching instruction, no operation is executed; when the main control module receives a cold standby state switching instruction, a shake-out instruction is sent to the electric trolley control module, and the electric trolley is shaken out from the running position to the testing position; when the main control module receives a maintenance state switching instruction, a shaking-out instruction is sent to the electric trolley control module, the electric trolley is shaken out to a test position from an operation position, a closing instruction is sent to the electric grounding knife control module after the test position is detected within a specified time, and the electric grounding knife is closed.
A further scheme is that if the intelligent medium-voltage switch cabinet is in a cold standby state, when the main control module receives an operation state switching instruction, a shaking-in instruction is sent to the electric trolley control module, and after the electric trolley runs to a working position from a test position within a specified time, a closing instruction is sent to the circuit breaker control module to close the circuit breaker; when the main control module receives a hot standby state switching instruction, a shaking-in instruction is sent to the electric trolley control module, and the electric trolley is shaken from a test position to a working position; when the main control module receives the cold standby state switching instruction, no operation is executed; when the main control module receives the maintenance state switching instruction, a closing instruction is sent to the electric grounding knife control module, and the electric trolley is closed.
If the intelligent medium-voltage switch cabinet is in an overhauling state, when the main control module receives an operating state switching instruction, the main control module sends a switching-off instruction to the electric grounding switch control module, after the electric grounding switch is switched off within a specified time, a shaking-in instruction is sent to the electric trolley control module, and after the electric trolley is shaken from a test position to a working position within a specified time, a switching-on instruction is sent to the circuit breaker control module to switch on the circuit breaker; when the main control module receives a hot standby state switching instruction, a switching-off instruction is sent to the electric grounding knife control module, after the electric grounding knife is separated within a specified time, a shaking-in instruction is sent to the electric trolley control module, and the electric trolley is shaken from a test position to a working position; when the main control module receives a cold standby state switching instruction, a switching-off instruction is sent to the electric grounding switch control module to separate the electric grounding switches; when the main control module receives the cold standby state switching instruction, no operation is executed.
The method is characterized in that when the breaker, the electric trolley and the electric grounding switch are operated, if the state is monitored by the main control module to be unchanged after a preset specified time, the main control module stops executing and sends warning information.
The circuit breaker, the electric trolley and the electric grounding knife are operated, the electric trolley is positioned at the middle position on a circuit breaker driving circuit, and the circuit breaker cannot be switched on; on the driving circuit of the electric trolley, when the circuit breaker and the electric grounding knife are both in the opening position, the motor of the electric trolley acts; on the electric grounding knife driving circuit, when the electric trolley is positioned at a test position, the electric grounding knife motor acts;
when the circuit breaker, the electric trolley and the electric grounding knife are operated, when the electric trolley is in the middle position, the main control module cannot execute a circuit breaker opening and closing instruction; when the circuit breaker and the electric grounding switch are not in the switch-off position, the main control module cannot execute the shake-in and shake-out instruction of the electric trolley; when the trolley is in the test position, the main control module can execute the opening and closing instructions of the electric grounding knife.
In the further scheme, in the running process of the electric trolley or the electric grounding knife, if the monitored motor current exceeds a locked rotor fixed value, the motor stops running after the set delay time is reached; if the running time of the motor exceeds the set time, the motor stops running due to overtime.
Therefore, compared with the prior art, the invention provides the on-line monitoring device and the method for automatically carrying out the multi-state switching of the intelligent medium-voltage switch cabinet, when the communication control module receives any one instruction in the multi-state switching, the instruction is transmitted to the main control module, the main control module judges which one or more of the mechanisms needs to be operated by analyzing the states of the breaker, the trolley and the grounding knife acquired in real time, and if only one mechanism needs to be operated, the mechanism is directly driven; if two to three mechanisms need to be driven, the five-prevention locking requirement is met, and the steps are executed in a time-sharing mode. Therefore, the invention mainly realizes the switching and online monitoring of the state of the switch cabinet, can greatly save the time of switching operation, prevent the possibility of artificial misoperation and prevent life safety accidents possibly occurring during manual operation.
Furthermore, the intelligent medium-voltage switch cabinet internal working state monitoring system can monitor the internal working state of the intelligent medium-voltage switch cabinet in real time, and realizes on-line monitoring and remote management of the intelligent medium-voltage switch cabinet.
Furthermore, the invention sends out an alarm message when the switch cabinet is abnormal in operation, thereby facilitating the workers to find out potential faults in the switch cabinet in advance and eliminate the faults in time. In addition, the invention can also transmit the running state of the switch cabinet to a remote terminal background, so that a user can conveniently know the running state of the switch cabinet and remotely adjust the running parameters of the switch cabinet when the switch cabinet is abnormal, real-time detection and report can be carried out, system faults can be timely found, and stable running of the intelligent medium-voltage switch cabinet can be ensured.
The invention is described in further detail below with reference to the drawings and the detailed description.
Drawings
Fig. 1 is a schematic diagram of an embodiment of an on-line monitoring device for automatically performing multi-state switching of a switch cabinet according to the invention.
Fig. 2 is a schematic circuit diagram of an embodiment of an on-line monitoring device for automatically performing multi-state switching of a switch cabinet according to the present invention.
Fig. 3 is a schematic diagram of an electric trolley control module in an embodiment of the on-line monitoring device for automatically switching the switch cabinet in multiple states.
Fig. 4 is a schematic diagram of a circuit breaker control module in an embodiment of an on-line monitoring apparatus for automatically switching between multiple states in a switchgear of the present invention.
Fig. 5 is a schematic diagram of an electric earthing switch control module in an embodiment of the on-line monitoring device for automatically switching between multiple states of the switch cabinet according to the present invention.
Fig. 6 is a schematic diagram of an energy storage motor measurement module in an embodiment of the on-line monitoring device for automatically switching multiple states of the switch cabinet.
Detailed Description
The utility model provides an online monitoring device embodiment that cubical switchboard carries out polymorphic switching automatically:
referring to fig. 1, the present invention provides an on-line monitoring device for automatically performing multi-state switching of a switch cabinet, including:
a main control module 1;
the circuit breaker control module 9 is connected with the main control module 1 and used for acquiring the opening and closing state and the opening and closing coil current of the circuit breaker, transmitting the acquired data to the main control module 1 and performing opening and closing operation on the circuit breaker after receiving an opening and closing command sent by the main control module 1;
the electric trolley control module 6 is connected with the main control module 1 and used for acquiring the running state of the electric trolley, transmitting the running state to the main control module 1 and carrying out the shaking-in or shaking-out operation on the electric trolley after receiving a shaking-in and shaking-out command sent by the main control module 1;
the electric grounding knife control module 7 is connected with the main control module 1 and used for acquiring a position signal of the electric grounding knife, transmitting the position signal to the main control module 1 and carrying out opening or closing operation on the electric trolley after receiving a switching-on/off command sent by the main control module 1;
the motor protection module 81 is connected with the main control module 1 and used for acquiring current data of the motor of the electric trolley and the motor of the electric grounding knife, transmitting the acquired current data to the main control module 1 and controlling the motor to stop or run when the main control module 1 operates the electric trolley and the electric grounding knife;
the communication control module 25 is connected with the main control module 1 and used for establishing communication with a background system and uploading related information to the background system; the system is also used for receiving an operation instruction of the background system and controlling the corresponding module to execute the corresponding action through the main control module 1 after receiving the operation instruction;
the display module 3 is connected with the main control module 1 and used for displaying state information, opening and closing coil current data and motor current data related to the intelligent medium-voltage switch cabinet; and the manual control switch cabinet is also used for providing an operation interface of the manual control switch cabinet.
The main control module 1 is used for acquiring data of the circuit breaker control module 9, the electric trolley control module 6, the electric grounding switch control module 7 and the motor protection module 81, and displaying contents of various acquired data through the display module 3;
the main control module 1 is further configured to receive an operation command of the background system through the communication control module 25, perform single-step operation or distributed operation on the circuit breaker, the electric trolley and the electric grounding switch, record an operation result at the same time, and display the operation result on the display module 3.
Specifically, as shown in fig. 2, the on-line monitoring device for automatically performing four-state switching of the intelligent medium-voltage vacuum switch cabinet of the embodiment is composed of a main control module 1, a control circuit board 2 and a display module 3, wherein the display module 3 is a touch screen display board, the main control module 1 is provided with a main control board analog quantity acquisition module 23, a communication control module 25 and a DVI interface 24, the control circuit board 2 is provided with a direct current input module 5, an energy storage motor measurement module 8, a circuit breaker control module 9, an electric trolley control module 6 and an electric grounding switch control module 7, and the main control board analog quantity acquisition module 23 can acquire chassis vehicle motor current, grounding switch motor current and energy storage motor current; the communication control module 25 is used for communicating with the monitoring background, uploading monitoring data and receiving a 'four-state' switching remote control operation instruction of the monitoring background and reading and writing related parameters; the DVI interface 24 is responsible for connecting with a corresponding interface 26 of the touch screen display panel, and the touch screen display panel 3 is a UI interface.
The bus board 4 of the control circuit board 2 is connected with the main control module 1 and receives the control of the main control module 1. The DC input module 5 receives external 220V DC input voltage; the electric trolley control module 6 is connected with the positive and negative ends 12 and 13 of the chassis vehicle motor, and the operation of the chassis vehicle motor is controlled through the two terminals; the grounding knife control module 8 is connected with the positive end 14 and the negative end 15 of the grounding knife motor, and the operation of the grounding knife motor is controlled through the two terminals; the energy storage motor measuring module 8 is connected with the Hall sensor through terminals 16 and 17, and can measure the motor current when the motor stores energy; the circuit breaker control module 9 is mainly connected with a circuit breaker control loop to realize the opening and closing control of the circuit breaker and has the functions of closing keeping and tripping keeping.
As shown in fig. 3, in the driving circuit of the electric trolley control module 6, an external direct current 220V power supply is connected, a circuit breaker position signal, a grounding knife position signal and a cabinet door travel switch are connected in series, when the circuit breaker and the grounding knife are positioned separately and the cabinet door is closed, the main control module 1 receives a 'four-state' switching operation instruction, determines that an instruction is sent when the chassis vehicle needs to shake in or out, the circuit can be connected, and the chassis vehicle is shaken in or out through the forward and reverse rotation of the chassis vehicle motor.
As shown in fig. 4, the driving circuit of the circuit breaker control module 9 is not much different from the conventional relay protection operation circuit, and will not be described in detail here. The main control module 1 receives a four-state switching operation instruction, and the circuit is driven to realize the switching on and off of the circuit breaker when the circuit breaker is determined to be switched on and off through analysis and judgment.
As shown in fig. 5, a driving circuit of the electric grounding switch control module 7 is connected to a cabinet door travel switch and a chassis position, and when the cabinet door is not closed or the chassis is not in a test position, the operation is not allowed, so that electric five-prevention is realized, and when the main control module 1 receives a four-state switching operation instruction, the circuit is driven when the switching operation of the grounding switch is determined to be required through analysis and judgment, so that the automatic switching operation of the grounding switch is realized.
As shown in fig. 6, the energy storage motor measurement module 8 is mainly used for collecting the current of the energy storage motor on line in real time when the energy storage motor stores energy, and recording waves, and the data is used for judging the health condition of the energy storage loop.
Furthermore, a hall sensor is connected in series in a control loop of the electric trolley control module 6 in fig. 3, the current of the motor of the chassis vehicle is collected in real time when the chassis vehicle is operated, and the motor is prevented from being burnt out through locked-rotor protection and operation overtime protection.
Further, in the driving circuit of the circuit breaker control module 9 in fig. 4, the coil current of the shunt switch is monitored, and the operating mechanism is monitored online in real time.
Furthermore, a hall sensor is also connected in series in a driving loop of the electric earthing switch control module 7 in fig. 5, so that the current of the motor when the earthing switch operates is monitored on line in real time, and the motor burnout is prevented through locked-rotor protection and operation overtime protection.
Application method embodiment of on-line monitoring device for automatically switching multiple states of switch cabinet
An application method of an online monitoring device for automatically switching multiple states of a switch cabinet is applied to the online monitoring device for automatically switching multiple states of the switch cabinet for online monitoring, and comprises the following steps:
the method comprises the steps that at least one operation parameter of an intelligent medium-voltage switch cabinet detected by a control circuit board 2 is obtained through a main control module 1, wherein the operation parameter comprises the opening and closing state and opening and closing coil current of a circuit breaker, the operation state of an electric trolley, a position signal of an electric grounding knife and current data of a motor;
the main control module 1 judges which working state the intelligent medium-voltage switch cabinet is in real time, wherein the working state comprises an operation state, a hot standby state, a cold standby state and a maintenance state;
when the main control module 1 receives the state switching instruction, the corresponding operation command is sent to the corresponding acquisition control module of the control circuit board 2 according to the states of the breaker, the electric trolley and the power-on electric grounding switch acquired in real time, so that the corresponding acquisition control module is controlled to execute the corresponding action.
If the intelligent medium-voltage switch cabinet is in the running state, no operation can be executed when the main control module 1 receives a running state switching instruction; when the main control module 1 receives a hot standby state switching instruction, sending a circuit breaker tripping instruction to the circuit breaker control module 9; when the main control module 1 receives a cold standby state switching instruction, a circuit breaker tripping instruction is sent to the circuit breaker control module 9, and after circuit breaker deflection switching-off state information is received within a set time, a shaking-out instruction is sent to the electric trolley control module 6, and the electric trolley is shaken out; when the main control module 1 receives an overhauling state switching instruction, a circuit breaker tripping instruction is sent to the circuit breaker control module 9, after circuit breaker displacement switching-off state information is received within a set time, a shaking-out instruction is sent to the electric trolley control module 6, the electric trolley is shaken out, then after the electric trolley position information is received within the set time, a switching-on instruction is sent to the electric grounding switch control module 7, and the electric grounding switch is switched on.
If the intelligent medium-voltage switch cabinet is in a hot standby state, when the main control module 1 receives an operation state switching instruction, a closing instruction is sent to the circuit breaker control module 9, and the circuit breaker is closed; when the main control module 1 receives the hot standby state switching instruction, no operation is executed; when the main control module 1 receives a cold standby state switching instruction, a shaking-out instruction is sent to the electric trolley control module 6, and the electric trolley is shaken out from the running position to the testing position; when the main control module 1 receives a maintenance state switching instruction, a shaking-out instruction is sent to the electric trolley control module 6, the electric trolley is shaken out to a test position from an operation position, a closing instruction is sent to the electric grounding knife control module 7 after the test position is detected within a specified time, and the electric grounding knife is closed.
If the intelligent medium-voltage switch cabinet is in a cold standby state, when the main control module 1 receives an operation state switching instruction, a shaking-in instruction is sent to the electric trolley control module 6, and after the electric trolley runs to a working position from a test position within a specified time, a closing instruction is sent to the circuit breaker control module 9 to close the circuit breaker; when the main control module 1 receives a hot standby state switching instruction, a shaking-in instruction is sent to the electric trolley control module 6, and the electric trolley is shaken from a test position to a working position; when the main control module 1 receives the cold standby state switching instruction, no operation is executed; when the main control module 1 receives the maintenance state switching instruction, a closing instruction is sent to the electric grounding knife control module 7, and the electric trolley is closed.
If the intelligent medium-voltage switch cabinet is in an overhauling state, when the main control module 1 receives an operation state switching instruction, a switching-off instruction is sent to the electric grounding switch control module 7, the electric grounding switch is switched off within a specified time, a shaking-in instruction is sent to the electric trolley control module 6, and after the electric trolley is shaken from a test position to a working position within a specified time, a switching-on instruction is sent to the circuit breaker control module 9 to close the circuit breaker; when the main control module 1 receives a hot standby state switching instruction, a switching-off instruction is sent to the electric grounding switch control module 7, after the electric grounding switch is switched off within a specified time, a shaking-in instruction is sent to the electric trolley control module 6, and the electric trolley is shaken into a working position from a test position; when the main control module 1 receives a cold standby state switching instruction, a switching-off instruction is sent to the electric grounding switch control module 7, and the electric grounding switch is separated; when the main control module 1 receives the cold standby state switching instruction, no operation is performed.
When the circuit breaker, the electric trolley and the electric grounding switch are operated, if the state is not changed after the preset specified time is exceeded, the main control module 1 stops executing and sends alarm information.
When the circuit breaker, the electric trolley and the electric grounding knife are operated, the electric trolley is in the middle position on a circuit breaker driving circuit, and the circuit breaker cannot be switched on; on the driving circuit of the electric trolley, when the circuit breaker and the electric grounding knife are both in the switch-off position, the motor of the electric trolley acts; on the electric grounding knife driving circuit, when the electric trolley is positioned at the test position, the electric grounding knife motor acts.
When the circuit breaker, the electric trolley and the electric grounding knife are operated, when the electric trolley is in the middle position, the main control module 1 cannot execute a circuit breaker opening and closing instruction; when the breaker and the electric grounding switch are not in the switch-off position, the main control module 1 cannot execute the shaking-in and shaking-out instruction of the electric trolley; when the trolley is in the test position, the main control module 1 can execute the opening and closing instructions of the electric grounding knife.
Therefore, in order to ensure the safety and reliability of switching, besides the mechanical five-prevention of the switch cabinet, the device also has electrical five-prevention and software five-prevention. Electrically, on a circuit breaker driving circuit, the electric trolley is in the middle position, and the circuit breaker cannot be switched on; on the driving circuit of the electric trolley, the circuit breaker and the grounding knife are both positioned at the switch-off position, and the motor of the electric trolley can act; on the electric grounding knife driving circuit, the electric grounding knife motor can act when the electric trolley is at the test position. On software, the trolley is in the middle position, and the main control module 1 cannot execute a circuit breaker opening and closing instruction; the breaker and the grounding knife are not in the switch-off position, and the main control module 1 cannot execute the shaking-in and shaking-out instruction of the electric trolley; when the trolley is in a test position, the main control module 1 can execute an electric grounding switch on-off instruction.
In the running process of the electric trolley or the electric grounding knife, if the monitored motor current exceeds a locked rotor fixed value, the motor stops running after a set delay time is reached; if the running time of the motor exceeds the set time, the motor stops running due to overtime.
Therefore, in order to protect the motors of the electric chassis truck and the electric grounding knife from being burnt, the main control module 1 has motor locked-rotor protection and motor operation overtime protection, and in the operation process of the electric trolley or the electric grounding knife, if the monitored motor current exceeds a locked-rotor fixed value, the motor stops operating when a set delay time is reached; if the motor operating time exceeds the set time, the motor may stop operating due to a timeout.
Therefore, compared with the prior art, the invention provides the on-line monitoring device and the method for automatically carrying out the multi-state switching of the intelligent medium-voltage switch cabinet, when the communication control module 25 receives any one instruction in the multi-state switching, the instruction is transmitted to the main control module 1, the main control module 1 judges which one or more of the mechanisms needs to be operated by analyzing the states of the circuit breaker, the trolley and the grounding switch acquired in real time, and if only one mechanism needs to be operated, the mechanism is directly driven; if two to three mechanisms need to be driven, the five-prevention locking requirement is met, and the steps are executed in a time-sharing mode. Therefore, the invention mainly realizes the switching and online monitoring of the state of the switch cabinet, can greatly save the time of switching operation, prevent the possibility of artificial misoperation and prevent life safety accidents possibly occurring during manual operation.
Furthermore, the intelligent medium-voltage switch cabinet internal working state monitoring system can monitor the internal working state of the intelligent medium-voltage switch cabinet in real time, and achieves on-line monitoring and remote management of the intelligent medium-voltage switch cabinet.
Furthermore, the invention sends out an alarm message when the switch cabinet is abnormal in operation, thereby facilitating the workers to find out potential faults in the switch cabinet in advance and eliminate the faults in time. In addition, the invention can also transmit the running state of the switch cabinet to a remote terminal background, so that a user can conveniently know the running state of the switch cabinet and remotely adjust the running parameters of the switch cabinet when the switch cabinet is abnormal, real-time detection and report can be carried out, system faults can be timely found, and stable running of the intelligent medium-voltage switch cabinet can be ensured.
The above embodiments are only preferred embodiments of the present invention, and the scope of the present invention should not be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are intended to be covered by the claims.
Claims (10)
1. The utility model provides an automatic on-line monitoring device that polymorphic switching was carried out to cubical switchboard which characterized in that includes:
a main control module;
the circuit breaker control module is connected with the main control module and used for acquiring the opening and closing state and the opening and closing coil current of the circuit breaker, transmitting the acquired data to the main control module and performing opening and closing operation on the circuit breaker after receiving an opening and closing command sent by the main control module;
the electric trolley control module is connected with the main control module and used for acquiring the running state of an electric trolley, transmitting the running state to the main control module and carrying out shaking-in or shaking-out operation on the electric trolley after receiving a shaking-in and shaking-out command sent by the main control module;
the electric grounding switch control module is connected with the main control module and used for acquiring a position signal of the electric grounding switch, transmitting the position signal to the main control module and carrying out switching-off or switching-on operation on the electric trolley after receiving a switching-off and switching-on command sent by the main control module;
the motor protection module is connected with the main control module and used for acquiring current data of the motor of the electric trolley and the motor of the electric grounding knife, transmitting the acquired current data to the main control module and controlling the motor to stop or run when the main control module operates the electric trolley and the electric grounding knife;
the communication control module is connected with the main control module and used for establishing communication with a background system and uploading related information to the background system; the main control module is used for controlling the corresponding module to execute corresponding actions after receiving the operation instruction;
the display module is connected with the main control module and used for displaying state information, opening and closing coil current data and motor current data related to the intelligent medium-voltage switch cabinet; and the operation interface is used for providing an operation interface for manually operating the switch cabinet.
2. The on-line monitoring device of claim 1, wherein:
the main control module is used for acquiring data of the circuit breaker control module, the electric trolley control module, the electric grounding switch control module and the motor protection module, and displaying the content of the acquired various data through the display module;
the main control module is also used for receiving an operation command of the background system through the communication control module, performing single-step operation or distributed operation on the circuit breaker, the electric trolley and the electric grounding knife, simultaneously recording an operation result and displaying the operation result on the display module.
3. An application method of the on-line monitoring device for automatically switching the switch cabinet in multiple states is characterized in that the method is applied to the on-line monitoring device for automatically switching the switch cabinet in multiple states according to any one of the claims 1 or 2 for on-line monitoring, and the method comprises the following steps:
the method comprises the steps that at least one operation parameter of an intelligent medium-voltage switch cabinet detected by a control circuit board is obtained through a main control module, wherein the operation parameter comprises the opening and closing state and opening and closing coil current of a circuit breaker, the operation state of an electric trolley, a position signal of an electric grounding switch and current data of a motor;
the method comprises the following steps that a main control module judges which working state an intelligent medium-voltage switch cabinet is in real time, wherein the working state comprises an operation state, a hot standby state, a cold standby state and a maintenance state;
when the main control module receives the state switching instruction, the corresponding operation command is sent to the corresponding acquisition control module of the control circuit board according to the states of the breaker, the electric trolley and the power-on electric grounding switch acquired in real time, so that the corresponding acquisition control module is controlled to execute corresponding actions.
4. The method of claim 3, wherein:
if the intelligent medium-voltage switch cabinet is in the running state, when the main control module receives a running state switching instruction, no operation is executed; when the main control module receives a hot standby state switching instruction, a circuit breaker tripping instruction is sent to the circuit breaker control module; when the main control module receives a cold standby state switching instruction, a circuit breaker tripping instruction is sent to the circuit breaker control module, and after circuit breaker deflection brake-separating state information is received within a specified time, a shaking-out instruction is sent to the electric trolley control module to shake out the electric trolley; when the main control module receives an overhauling state switching instruction, a breaker tripping instruction is sent to the breaker control module, after breaker displacement switching-off state information is received within a set time, a shaking-out instruction is sent to the electric trolley control module, the electric trolley is shaken out, then after the electric trolley is in test position information within the set time, a switching-on instruction is sent to the electric grounding switch control module, and the electric grounding switch is switched on.
5. The method of claim 3, wherein:
if the intelligent medium-voltage switch cabinet is in a hot standby state, when the main control module receives an operation state switching instruction, a switching-on instruction is sent to the circuit breaker control module, and the circuit breaker is switched on; when the main control module receives the hot standby state switching instruction, no operation is executed; when the main control module receives a cold standby state switching instruction, a shake-out instruction is sent to the electric trolley control module, and the electric trolley is shaken out from the running position to the testing position; when the main control module receives a maintenance state switching instruction, a shaking-out instruction is sent to the electric trolley control module, the electric trolley is shaken out to a test position from an operation position, a closing instruction is sent to the electric grounding knife control module after the test position is detected within a specified time, and the electric grounding knife is closed.
6. The method of claim 3, wherein:
if the intelligent medium-voltage switch cabinet is in a cold standby state, when the main control module receives an operating state switching instruction, a shaking-in instruction is sent to the electric trolley control module, and after the electric trolley runs to a working position from a test position within a specified time, a closing instruction is sent to the circuit breaker control module to close the circuit breaker; when the main control module receives a hot standby state switching instruction, a shaking-in instruction is sent to the electric trolley control module, and the electric trolley is shaken from the test position to the working position; when the main control module receives the cold standby state switching instruction, no operation is executed; when the main control module receives the maintenance state switching instruction, a closing instruction is sent to the electric grounding knife control module, and the electric trolley is closed.
7. The method of claim 3, wherein:
if the intelligent medium-voltage switch cabinet is in an overhauling state, when the main control module receives an operation state switching instruction, a switching-off instruction is sent to the electric grounding switch control module, the electric grounding switch is switched off within a specified time, a shaking-in instruction is sent to the electric trolley control module, the electric trolley is shaken from a test position to a working position within a specified time, a switching-in instruction is sent to the circuit breaker control module, and the circuit breaker is switched on; when the main control module receives a hot standby state switching instruction, a switching-off instruction is sent to the electric grounding knife control module, after the electric grounding knife is separated within a specified time, a shaking-in instruction is sent to the electric trolley control module, and the electric trolley is shaken from a test position to a working position; when the main control module receives a cold standby state switching instruction, a switching-off instruction is sent to the electric grounding switch control module to separate the electric grounding switches; when the main control module receives the cold standby state switching instruction, no operation is executed.
8. The method according to any one of claims 3 to 7, wherein:
when the circuit breaker, the electric trolley and the electric grounding knife are operated, if the state is not changed when the preset specified time is exceeded, the main control module stops executing and sends alarm information.
9. The method according to any one of claims 3 to 7, wherein:
when the circuit breaker, the electric trolley and the electric grounding knife are operated, the electric trolley is in the middle position on a circuit breaker driving circuit, and the circuit breaker cannot be switched on; on the driving circuit of the electric trolley, when the circuit breaker and the electric grounding knife are both in the switch-off position, the motor of the electric trolley acts; on the electric grounding knife driving circuit, when the electric trolley is positioned at a test position, the electric grounding knife motor acts;
when the circuit breaker, the electric trolley and the electric grounding knife are operated, when the electric trolley is in the middle position, the main control module cannot execute a circuit breaker opening and closing instruction; when the breaker and the electric grounding knife are not in the switch-off position, the main control module cannot execute a shake-in and shake-out instruction of the electric trolley; when the trolley is in the test position, the main control module can execute the opening and closing instructions of the electric grounding switch.
10. The method according to any one of claims 3 to 7, wherein:
in the running process of the electric trolley or the electric grounding knife, if the monitored motor current exceeds a locked rotor fixed value, the motor stops running after a set delay time is reached; if the running time of the motor exceeds the set time, the motor stops running due to overtime.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211070302.7A CN115459439A (en) | 2022-09-02 | 2022-09-02 | Online monitoring device for automatically switching multiple states of switch cabinet and application method thereof |
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| CN202211070302.7A CN115459439A (en) | 2022-09-02 | 2022-09-02 | Online monitoring device for automatically switching multiple states of switch cabinet and application method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116149218A (en) * | 2022-12-15 | 2023-05-23 | 珠海万力达电气自动化有限公司 | Control method of intelligent medium-voltage switch cabinet electric handcart |
| CN116760192A (en) * | 2023-08-16 | 2023-09-15 | 川开电气有限公司 | One-key sequential control method of switch cabinet |
-
2022
- 2022-09-02 CN CN202211070302.7A patent/CN115459439A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116149218A (en) * | 2022-12-15 | 2023-05-23 | 珠海万力达电气自动化有限公司 | Control method of intelligent medium-voltage switch cabinet electric handcart |
| CN116760192A (en) * | 2023-08-16 | 2023-09-15 | 川开电气有限公司 | One-key sequential control method of switch cabinet |
| CN116760192B (en) * | 2023-08-16 | 2023-10-20 | 川开电气有限公司 | One-key sequential control method of switch cabinet |
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