CN115276220A - Secondary system operation anti-misoperation locking system and method - Google Patents
Secondary system operation anti-misoperation locking system and method Download PDFInfo
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- CN115276220A CN115276220A CN202210721465.0A CN202210721465A CN115276220A CN 115276220 A CN115276220 A CN 115276220A CN 202210721465 A CN202210721465 A CN 202210721465A CN 115276220 A CN115276220 A CN 115276220A
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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
- H02J13/00034—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 an electric power substation
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
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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
- 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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Abstract
The invention relates to a secondary system operation anti-misoperation locking system and a method, comprising the following steps: the remote operation control system comprises a secondary acquisition module, a secondary unlocking/locking module, a secondary operation module and a secondary logic module, and realizes remote operation control of primary and secondary equipment. When the secondary system is operated, the secondary system can be unlocked to prevent the misoperation and locking only after logical verification through simulation preview on the misoperation and locking prevention system, and remote control operation is carried out. The invention brings the secondary system into the anti-misoperation locking system for management, realizes the full-process management and control of the operation of the primary equipment and the secondary equipment, reduces the hidden danger of the misoperation of the secondary system to the safe operation of the power grid, further realizes the remote monitoring and management of the secondary system, saves the operation and maintenance cost and improves the automatic management level of the power grid.
Description
Technical Field
The invention belongs to the technical field of power grid regulation and control, relates to a misoperation-preventive locking system and method, and particularly relates to a secondary system operation misoperation-preventive locking system and method.
Background
The implementation of the power grid regulation and control integrated mode realizes the remote centralized management and operation of the regulation and control personnel on the equipment, and improves the operation and maintenance management level. The intelligent substation introduces programmed operation to realize one-click operation on equipment, and the automation level of the power grid is improved. The anti-misoperation locking system is established for preventing malignant misoperation such as switching on and switching off of a switch with a ground wire, switching on and switching off of a switch with a live wire and the like, microcomputer five-prevention logic verification is carried out through preview of an operation ticket, and remote control operation can be carried out through five-prevention unlocking. Therefore, the anti-misoperation locking system is the safety basis of remote control operation.
For the comprehensive automatic transformer substation, the equipment can realize remote control, and a dispatcher can utilize the dispatching automation system to carry out remote control on the governed transformer substation, including the opening and closing of the circuit breaker. In order to ensure the safety of remote control operation and prevent malignant misoperation accidents, an anti-misoperation locking system is introduced, and the probability of misoperation is reduced through locking logic check between primary devices.
Fig. 1 is a flow chart of a system operation anti-misoperation lockout, as shown in fig. 1, including the following parts:
the monitoring system comprises: the acquisition of the position information of primary equipment, namely the state quantity of the switch and the switch on/off position of the switch, the acquisition of remote signaling information and photon plate information, the alignment of equipment state information and the like are realized.
Operation selection: and the functions of man-machine conversation, monitoring operation, forced unlocking, ticket clearing and the like are realized.
And (4) five-prevention logic judgment: whether control can be executed or not is judged through a five-prevention logic system, and misoperation such as pulling a knife switch with load, transmitting power with a ground wire and the like is prevented.
And (3) in-station return correction: by sending a remote control command to the station, the switching state is aligned again before operation, the equipment is judged to have no abnormality, the control handle is in a far position, and the conditions of allowing remote control and the like are met.
The device performs: and the transformer substation receives the remote control instruction, remotely operates the switch on/off, sends the shifted switch position upwards, and completes corresponding changes of the actual position of the switch, the position of the monitoring background and the position of the five-prevention system after the switch is aligned again, so that the remote control operation is completed.
With the development of intelligent substations and the promotion of the integration of centralized monitoring of substations and regulation and control, the traditional microcomputer five-prevention system is difficult to meet the requirements of the regulation and control integration on remote control safety verification and automatic control. The following disadvantages are caused:
1. in actual operation, a regulation and control person generally only realizes remote programming operation on primary equipment such as a switch, a disconnecting link and the like, and cannot realize operation of a secondary system, particularly, manual local operation is needed when a pressing plate is put into or taken out of the device. The traditional mode increases the labor cost and increases the operation and maintenance cost.
2. The microcomputer five-prevention system in the traditional mode mostly considers the safety of remote control operation of primary equipment, logic verification is also the locking logic relation among the primary equipment, a switch, a disconnecting link and a grounding disconnecting link, a secondary system is not involved, and the switching of a pressure plate and a loop is not considered. In actual work, the functions of the relay protection and automation device are not started, even the tripping outlet is not connected, so that great potential safety hazards are caused, and the safe and stable operation of a power grid is not facilitated.
Through searching, no prior art publication which is the same as or similar to the present invention is found.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides the secondary system operation anti-misoperation locking system and the method, can realize the remote monitoring and management of the secondary system, saves the operation and maintenance cost, and improves the automatic management level of a power grid.
The invention solves the practical problem by adopting the following technical scheme:
a secondary system operation anti-mislatching system comprising: the system comprises a secondary acquisition module, a secondary unlocking/locking module, a secondary operation module and a secondary logic module, wherein the output end of the secondary acquisition module is connected with the secondary unlocking/locking module and is used for acquiring and synchronizing remote signaling information tables of a real-time database of a monitoring system and sending the acquired state information quantity to the secondary unlocking/locking module of the next stage by a one-bit two-source code '0' or '1'; the output end of the secondary unlocking/locking module is connected with the secondary operation module and used for obtaining an unlocking/locking criterion result according to the information quantity output by the secondary acquisition module and sending the unlocking/locking criterion result to the operation module in a grading manner; the output end of the operation module is connected with the secondary logic module and used for selecting a remote control object according to an unlocking/locking criterion result of the secondary unlocking/locking module and sending the switching/returning operation of the soft pressing plate and the hard pressing plate to the secondary logic module; the secondary logic module is used for outputting a logic evaluation judgment result according to the remote control object selection and the pressing plate input/output selection operation instruction output by the operation module, sending the logic evaluation judgment result to the next-stage station for performing the correction, outputting a correction result and an executable operation instruction to the next-stage equipment for execution by the station for outputting the equipment end correction result and the executable operation instruction, and executing the execution equipment according to the executable operation instruction output by the station for performing the correction.
Moreover, the secondary acquisition module comprises: the soft pressing plate state quantity acquisition module directly extracts the state of the pressing plate in the real-time database, namely, the state of 'input' or 'exit', the exit state is represented by '0', and the input state is represented by '1';
the hard pressing plate state quantity acquisition module is additionally provided with a pressing plate state quantity acquisition accessory, converts the switching state of the pressing plate into semaphore and sends the semaphore to a monitoring system, and the state of the pressing plate, namely 'switching in' or 'switching out', represents the switching out state by '0' and represents the switching in state by '1';
and the remote signaling state quantity acquisition module extracts the remote signaling state quantity from the real-time database, and the remote signaling state quantity is used for signaling or resetting, wherein the resetting state is represented by '0' and the signaling state is represented by '1'.
A secondary system operation anti-misoperation locking method comprises the following steps:
step 1, an unlocking/locking module receives the pressing plate state and remote signaling information output by a secondary acquisition module, and operation judgment is carried out according to the conditions of primary and secondary remote/local pressing plates at corresponding intervals;
step 2, according to the operation judgment result in the step 1, the unlocked pressing plate can be operated, and the soft pressing plate and the hard pressing plate are selected;
step 3, receiving an operation instruction sent by the operation module, and performing secondary logic verification;
step 4, receiving the instruction after passing the logic verification, sending the instruction into a station, aligning the states of the primary equipment and the secondary pressing plate again before operation, and judging that the equipment is not abnormal;
and 5, the transformer substation primary equipment receives a remote control instruction, remotely controls the switch to be switched on/off, sends the shifted switch position upwards, the secondary pressing plate receives the remote control instruction, remotely or locally operates the switching-on/off pressing plate, sends the switched-off pressing plate in a state upwards, and completes corresponding changes of the actual position of the primary equipment, the actual position of the secondary equipment, the position of the monitoring background and the position of the anti-misoperation locking system after alignment again, so that the operation is completed.
The specific steps of the step 1 comprise:
(1) The pressing plate is maintained, the primary locking authority is manually triggered, the pressing plate can be operated on the spot in a secondary protection and automatic control screen cabinet, and logic verification and alarm prompt are not carried out; after the first-stage distant/local pressing plate is restored to be thrown far, the system automatically checks the current pressing plate state and the previous pressing plate state, and if inconsistency occurs, an alarm is given; if the checking passes, the interval still enters the anti-misoperation locking system, and the operation of the secondary system still can be carried out through the five-prevention system checking.
(2) The remote signaling with the secondary locking identification can automatically trigger the secondary locking permission of the anti-misoperation locking system, the corresponding protection device is locked, the device does not realize the functions of outlet tripping and the like any more, but the remote signaling is kept to be sent upwards; after relay protection and field verification and defect processing of automatic professionals are finished, the remote signaling photon board signal is reset, and the secondary locking authority of the anti-misoperation locking system is automatically released; the interval is still included in the anti-misoperation locking system, and the operation of the secondary system is still performed through the check of the anti-misoperation locking system.
Further, the specific steps of step 2 include:
(1) Soft pressing plate operation: the operator firstly checks the position states of the monitoring system and the acquisition system, the telesignaling information is error-free and abnormal, the unlocking/locking mode allows operation, the operation contents are transmitted to the next stage for logic check after the operation contents are confirmed by the guardian and the key check is correct;
the method provides two modes of single selection and batch selection, namely single pressing plate operation and batch operation:
single pressing plate: the selection is made by inputting the name of the interval, selecting the name of the protection device, the name of the pressing plate, and the operation of putting in/out.
Batch operation: putting in/out a pressing plate at a corresponding interval or corresponding to a certain set of protection device;
(2) And (3) hard pressing operation: the operation related to the hard pressing plate forms electronic sequence information, the electronic sequence information is transmitted to a next-stage logic module, the electronic sequence information is transmitted to a station for returning correction after logic verification is correct, executable electronic sequence information is generated after the logic verification is correct, and when a certain pressing plate needs to be operated, an anti-misoperation locking system controls the corresponding pressing plate acquisition module accessory to indicate light to prompt an operator to operate; and when the operation is wrong, a light alarm is realized.
The specific method of step 3 is:
the method is combined with the operation of primary equipment, anti-error logic of a secondary system is formulated on an anti-error system, simulation rehearsal is started through an operation module, the secondary system is carried out during the simulation rehearsal, the logical relationship between a secondary system pressing plate and the primary equipment or between the pressing plate and the pressing plate is verified, comprehensive anti-error from the primary equipment to the secondary pressing plate is formed, and the risk which is possibly generated is logically evaluated.
The invention has the advantages and beneficial effects that:
1. the invention combines the characteristics of a secondary system and misoperation-preventive locking, and provides a misoperation-preventive locking method for the operation of the secondary system, namely, a misoperation-preventive locking related module for the operation of the secondary system is added in a traditional misoperation-preventive locking system, and the method comprises the following steps: the remote operation control system comprises a secondary acquisition module, a secondary unlocking and locking module, a secondary operation module and a secondary logic module, and remote operation control of primary and secondary equipment is realized. When the secondary system is operated, the secondary system can be unlocked to prevent the misoperation and locking only after logical verification through simulation preview on the misoperation and locking prevention system, and remote control operation is carried out. The invention brings the secondary system into the anti-misoperation locking system for management, realizes the full-process management and control of the operation of the primary equipment and the secondary equipment, reduces the hidden danger of the misoperation of the secondary system to the safe operation of the power grid, further realizes the remote monitoring and management of the secondary system, saves the operation and maintenance cost and improves the automatic management level of the power grid.
2. The system and the method for preventing misoperation and locking of the secondary system are suitable for remote monitoring and management of relay protection and automation equipment in the power industry, the hard pressing plate state acquisition module is used for communicating the pressing plate hardware with the interface of a house locking system, and the five-prevention logic judgment module is used for bringing the operation logic of the pressing plate of the secondary system of the transformer substation into misoperation and locking; by introducing the anti-misoperation locking electronic sequence operation to the hard pressing plate, the visual operation of the operation content and the sequence is realized. The invention realizes the full-flow management and control of the operation of primary equipment and secondary equipment, namely state quantity acquisition, intelligent operation and intelligent reexamination, realizes the remote monitoring and management of a secondary system, carries out on-line monitoring on the running state of the equipment, and gives an alarm when abnormal working conditions occur, thereby avoiding the occurrence of running accidents. And the operation and maintenance cost can be further reduced, the reliability of the equipment is improved, the intellectualization of the equipment is further realized, and important support is provided for the realization of a strong intelligent power grid.
Drawings
FIG. 1 is a flow chart of the primary system operation anti-mislocking of the present invention;
FIG. 2 is a flow chart of the secondary system operation anti-mislocking of the present invention;
FIG. 3 is a schematic diagram of a secondary acquisition module of the present invention;
FIG. 4 is a flow chart of an unlock and lock module of the present invention;
FIG. 5 is a flow chart of operational modules of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
a secondary system operation anti-misoperation lockout system, as shown in fig. 2 to 5, comprising: the system comprises a secondary acquisition module, a secondary unlocking/locking module, a secondary operation module and a secondary logic module, wherein the output end of the secondary acquisition module is connected with the secondary unlocking/locking module and is used for acquiring and synchronizing remote signaling information tables of a real-time database of a monitoring system and sending the acquired state information quantity to the secondary unlocking/locking module of the next stage by a one-bit two-source code '0' or '1';
the secondary collection module comprises: the soft pressing plate state quantity acquisition module directly extracts the state of the pressing plate in the real-time database, namely, the state of 'input' or 'exit', the exit state is represented by '0', and the input state is represented by '1';
the hard pressing plate state quantity acquisition module is additionally provided with a pressing plate state quantity acquisition accessory, the switching state of the pressing plate is converted into semaphore and is sent to the monitoring system, the state of the pressing plate, namely switching-in or switching-out, is represented by 0and is represented by 1.
The remote signaling state quantity acquisition module extracts the remote signaling state quantity from the real-time database, and the remote signaling state quantity is used for signaling or resetting, wherein 0 represents the resetting state, and 1 represents the signaling state.
The output end of the secondary unlocking/locking module is connected with the secondary operation module and used for obtaining an unlocking/locking criterion result according to the information quantity output by the secondary acquisition module and sending the unlocking/locking criterion result to the operation module in a grading manner;
the output end of the operation module is connected with the secondary logic module and used for selecting a remote control object according to an unlocking/locking criterion result of the secondary unlocking/locking module and sending the switching/returning operation of the soft pressing plate and the hard pressing plate to the secondary logic module; the secondary logic module is used for outputting a logic evaluation judgment result according to a remote control object selection and pressing plate switching/returning selection operation instruction output by the operation module, sending the logic evaluation judgment result to next-stage in-station return correction, outputting a device end return correction result and an executable operation instruction to next-stage equipment for execution, and executing the execution equipment according to the executable operation instruction output by the in-station return correction.
The composition and function of the various modules of the present invention are further described below:
1. secondary collection module
The real-time acquisition of the secondary system state is the basis for realizing secondary error prevention, and mainly comprises a pressing plate on-off state, a remote signaling information quantity and the like. The secondary system remote signaling information can reflect the working condition of secondary equipment, and the change of the secondary system remote signaling information can be collected and synchronized from a monitoring system real-time database remote signaling information table;
the acquisition module mainly increases the collection of clamp plate quantity of state, and the clamp plate can be divided into two kinds of modes of soft clamp plate, hard clamp plate and carry out the quantity of state and gather.
(1) The soft pressing plate state quantity acquisition module is mostly seen in an intelligent substation and mainly is replaced by a multifunctional soft pressing plate, the state of the multifunctional soft pressing plate can be extracted from a real-time database, and the soft pressing plate state quantity acquisition module can be synchronous with the real-time database and extracts corresponding state quantity;
(2) Hard clamp plate state quantity collection module, the export clamp plate in conventional transformer substation, the intelligent substation is mostly hard clamp plate, and hard clamp plate state quantity is not gathered to traditional database, need add the clamp plate state and gather the annex, send collection module on turning into the semaphore with the state of moving back of throwing of clamp plate. The pressing plate is normally in two states, namely 'input' or 'output', which can be represented by a one-bit two-source code, according to the international electrotechnical commission IEC standard, the output state is represented by '0', and the input state is represented by '1'.
(3) The remote signaling state quantity acquisition module can reflect the conditions of secondary system hardware device, software system faults and the like due to the change of remote signaling information, extract the remote signaling state quantity in the real-time database, and synchronize the remote signaling state quantity acquisition module with the real-time database and extract corresponding state quantity.
The secondary acquisition module sends the acquired pressing plate state and the remote signaling state information quantity to the next-stage unlocking and locking module.
2. Unlocking and locking module
A secondary system remote/local pressing plate is added on an anti-misoperation locking system operation interface, and the secondary system unlocking and locking module can be started through state operation of the pressing plate, so that closed-loop and semi-closed-loop management of system programmed operation is realized, namely, manual intervention can be realized when the requirements of the system programmed operation are not met, and remote or local operation of equipment is completed through the semi-closed-loop management.
Especially, during maintenance, accident treatment and defect treatment, the locking relation can be released, and after secondary workers carry out field treatment and work is finished, a remote control mode is recovered. And (4) adding a plurality of stages of remote/local pressing plates, and carrying out hierarchical management on the locking authority of each stage of pressing plates corresponding to the unlocking and locking modules of the secondary system. The primary remote/local pressing plate corresponds to a primary locking authority, namely the highest locking authority, and is taken from an overhaul pressing plate on a secondary protection and control panel cabinet or is triggered by manual operation; and (3) arranging a second-level remote/local pressing plate at the operating interface of the anti-misoperation locking system at intervals, wherein the second-level remote/local pressing plate corresponds to a second-level locking authority and is taken from identification telecommand information which identifies defects of a secondary system, such as 'device alarm', 'communication interruption' and the like in telecommand.
(1) First-level remote/in-place pressure plate
One-level distant place clamp plate on the spot corresponds one-level shutting authority, and the highest shutting authority that promptly has two kinds of trigger mode: one is an automatic triggering mode, is taken from an overhaul pressing plate on a secondary protection and control panel cabinet, and can trigger a locking module; one is manual triggering, which is realized by manually carrying out forced operation on a first-level remote/local pressing plate, blocking the state of the pressing plate to be remote or local and triggering a locking or unlocking module. After the primary locking authority is triggered, the pressing plate can be operated on the spot in a secondary protection and automatic control screen cabinet, and logic verification and alarm prompt are not carried out.
And the overhaul pressing plate triggering mode is used for relay protection and is used when an automation professional carries out on-site overhaul and verification operation on the secondary equipment. Secondary system overhaul of equipments, check-up often can involve the operation of clamp plate, and the clamp plate often can operate repeatedly in the work, if all through preventing mistake locking system at every turn of operation, relay protection and automatic professional maintainer have inevitable increased work load when carrying out maintenance work. In the process of protection and automation device inspection, accidents need to be simulated, whether the relay protection and automation device completes corresponding logic actions according to the fixed value and design requirements is verified, namely whether the relay protection and automation device outlet has corresponding deflection output is verified by inputting voltage and current corresponding to the protection fixed value. However, the primary device and the secondary device may not satisfy the corresponding relationship between five-prevention logic and in-station device return correction in a normal operation state, which causes a failure of the error-locking prevention system and disallows operation. Therefore, during maintenance, after a maintenance staff puts the maintenance pressing plate on the spot, the connection between the device and the monitoring system, the secondary acquisition system and the rest devices is temporarily released, the device is changed into a single device which only allows on-site operation, the secondary acquisition system records the state of the device pressing plate before the maintenance pressing plate shifts, during unlocking, the maintenance staff can not put the pressing plate on the spot and move back through the secondary five-prevention system, and the anti-misoperation locking system does not give an alarm.
The manual trigger mode is used for operation of operation and maintenance personnel, a first-level remote/local pressing plate can be manually put on the spot, when the operation is carried out in normal overhaul, or the secondary device needs to be temporarily locked when the defect of the secondary system equipment is found, the misoperation of the protection and automation device is prevented during the period, and related professional technicians are informed to carry out defect treatment.
After normal overhaul is finished or defects are eliminated, when the state of the pressing plate is recovered, incomplete recovery of the state of the pressing plate or error condition is easily caused, and misoperation of the pressing plate is caused. Therefore, after the primary remote/local pressing plate is restored to be thrown to the remote position, the system automatically checks the current pressing plate state and the previous pressing plate state, and if the current pressing plate state and the previous pressing plate state are inconsistent, an alarm is given. If the checking passes, the interval still enters the anti-misoperation locking system, and the operation of the secondary system still can be carried out through the five-prevention system checking.
(2) Two-stage remote/in-situ pressure plate
A secondary remote/local pressing plate is arranged on an operation interface of the anti-misoperation locking system at intervals, corresponds to secondary locking authority, and is in an automatic triggering mode, and is taken from remote signaling information which indicates defects of a secondary system, such as 'device alarm', 'communication interruption' and the like in remote signaling. When the secondary equipment has defects and sends photon cards such as 'device alarm' and the like, the secondary locking authority is automatically triggered.
The remote signaling photon cards of 'device alarm', 'communication interruption', etc. send out alarm signals, generally, because the protection and automation device itself has hardware or software faults, such as: CPU module anomalies, device power failures, channel anomalies, and the like. At the moment, the protection and automation device cannot perform normal function output, and when the power grid fails, the protection and automation device cannot control the primary switch to trip in time to isolate the fault; and because the device of the secondary system is in failure, when the power grid normally operates, the primary switch can be in misoperation. Therefore, when the device sends out the remote signaling photon cards such as 'device alarm' and the like, the identification equipment has defects, the secondary locking permission of the anti-misoperation locking system is automatically triggered, the corresponding protection device is locked, the device does not realize the functions of outlet tripping and the like any more, but remote signaling is kept to be sent upwards, after relay protection and field verification and defect processing of automation professionals are finished, the signals of the remote signaling photon cards such as 'device alarm' and the like are reset, and the secondary locking permission of the anti-misoperation locking system is automatically released. The interval is still included in the anti-misoperation locking system, and the operation of the secondary system is still carried out by the check of the anti-misoperation locking system.
3. Operating module
The functions of man-machine conversation, operation object selection, monitoring operation and the like are realized. The method is divided into two modes of soft pressing plate operation and hard pressing plate operation, and programmed automatic operation and manual semi-closed loop operation are realized.
(1) Soft pressing plate operation: the example of the switch is changed from operation to maintenance, and the operation flow of the primary equipment is that an operator performs remote control object selection, the switch is selected in an on/off mode, then the operator confirms that the key is verified to be correct, and then the operation content is transmitted to the next stage for five-prevention logic verification. The invention adds the secondary system operation, after the primary equipment operation executes the telecommand contraposition, the secondary system operation is carried out, the operator firstly checks the position states of the monitoring system and the acquisition system, the telecommand information is correct and has no error, the unlocking/locking mode allows the operation, namely, under the remote control mode, the remote control object selection and the pressing plate throwing/withdrawing selection are executed, and under the method, two modes of single selection and batch selection, single pressing plate operation and batch operation are provided.
Single pressing plate: the selection is made by inputting the name of the interval, selecting the name of the protection device, the name of the pressing plate, and the operation of putting in/out.
Batch operation: the pressing plate corresponding to the interval or a certain set of protection device is thrown/retreated, so that the operation is more convenient and faster.
And after the confirmation of the guardian and the correct key verification, the operation content is transmitted to the next stage for logic verification.
(2) And (3) hard pressing operation: for the hard pressing plate, if the operation mode of forced locking of primary equipment is adopted, although a good anti-error effect can be achieved, the workload of operators is greatly increased, and the operation is complicated. Although the operating efficiency is improved by adopting the operating mode of the soft pressure plate, the operation is not beneficial to ensuring the correctness and the reliability of the operation. Therefore, the operation suggestion of the hard pressing plate adopts an anti-error prompt mode, the operation related to the hard pressing plate forms electronic sequence information and is transmitted to a next-stage logic module, the electronic sequence information is transmitted to a station for returning correction after logic verification is correct, executable electronic sequence information is generated after the logic verification is correct, and when a certain pressing plate needs to be operated, the anti-error locking system controls the corresponding pressing plate acquisition module accessory to indicate light to prompt an operator to operate; and when the operation is wrong, a light alarm is realized.
4. Logic module
And receiving an operation instruction sent by the operation module, performing logic check, and mainly judging whether control can be executed or not by a primary system so as to prevent malignant misoperation such as pulling a disconnecting link with load, transmitting power with a ground wire and the like. If power is supplied, before the switch is closed, it should be checked that the grounding knife switch is completely opened. The above requirements are compiled into a logic criterion, namely the switch position is switched from on to off, and the grounding knife switch position is switched from off. If the judgment is correct, the next step is executed; otherwise, the next step is executed. The method is combined with the operation of primary equipment, anti-error logic of a secondary system is formulated on the anti-error system, simulation rehearsal is started through an operation module, the secondary system is carried out during the simulation rehearsal, if the logical relationship between a secondary system pressing plate and the primary equipment or between the pressing plate and the pressing plate is verified, the comprehensive anti-error from the primary equipment to the secondary pressing plate is formed, and the logical evaluation is carried out on the risk which is possibly generated.
5. In-station return school
By sending a remote control command to the station, the states of the primary equipment and the secondary pressing plate are aligned again before operation, the equipment is judged to have no abnormality, the control handle is in a distant position, and the conditions of consistent pressing plate on and off states and the like are met.
6. Device execution
The transformer substation primary equipment receives a remote control instruction, remotely controls the switch on/off, sends the shifted switch position upwards, the secondary pressing plate receives the remote control instruction, remotely or locally operates the switching-on/off pressing plate, sends the switching-on/off pressing plate state upwards, and completes corresponding changes of the primary equipment actual position, the secondary equipment actual position, the monitoring background position and the anti-misoperation locking system position after secondary alignment, so that the operation is completed.
A secondary system operation anti-misoperation locking method comprises the following steps:
step 1, the unlocking/locking module receives the pressing plate state and the remote signaling information output by the secondary acquisition module, and operation judgment is carried out according to the conditions of primary and secondary remote/local pressing plates at corresponding intervals.
In this embodiment, the pressure plate is overhauled, the first-level locking authority is triggered manually, the pressure plate can only be operated on the spot in a secondary protection and automatic control screen cabinet, and logic verification and alarm prompt are not performed. After the first-level remote/local pressing plate is restored to be thrown to the remote place, the system automatically checks the current pressing plate state and the previous pressing plate state, and if the current pressing plate state and the previous pressing plate state are inconsistent, an alarm is given. If the checking passes, the interval still enters the anti-misoperation locking system, and the operation of the secondary system still can be carried out through the five-prevention system checking.
Maintenance state: the receiving and identifying module identifies that the same interval switch position is switched on and switched off, and the knife switch positions on the two sides are switched on and switched off.
IF =0AND × -2 (switch number) =0AND × -4 (switch number) =0 (OR × -5 (switch number) = 0) is input to the unlocking/locking module.
And the unlocking and locking module starts to unlock all the pressure plate operation authorities in the interval. The maintenance pressing plate is put into operation, the first-stage locking is started, and the pushing is not carried out any more. When the switch and the knife switch are restored to the running state, the switch position is switched from the switch to the switch, the knife switch positions on the two sides are switched from the switch to the switch, the maintenance pressing plate is withdrawn, and the primary locking mode is withdrawn.
The remote signaling with the secondary locking identification can automatically trigger the secondary locking permission of the anti-misoperation locking system, the corresponding protection device is locked, the device does not realize the functions of outlet tripping and the like any more, but the remote signaling is kept to be transmitted upwards. After relay protection and field verification and defect processing of automatic professionals are finished, the remote signaling photon board signal is reset, and the secondary locking authority of the anti-misoperation locking system is automatically released. The interval is still included in the anti-misoperation locking system, and the operation of the secondary system is still carried out by the check of the anti-misoperation locking system.
The special operation primary equipment and the secondary pressure plate are unlocked and locked, the following conditions correspond to a secondary unlocking and locking mode, and when a switch or a remote signaling is recovered or reset, the secondary unlocking and locking mode is automatically released:
when the bus coupler or the section switch is operated, the bus is not thrown into a small difference any more, and a large difference protection pressing plate is thrown in a rotating mode, if a fault occurs, all switches are tripped according to the bus.
The bus-coupled or sectional switch is switched on from the off position, and the knife switches on the two sides are switched on from the off position
IF (mother link or section switch number) =1 AND-4 (disconnecting link number) =1 AND-5, unlocking the mother link or section switch interval breaker to withdraw the small difference AND input the operation authority of the large differential pressure plate.
When the bus coupler or the section switch is switched on from the on state, the knife switches on the two sides are switched on from the off state, and the two-stage unlocking and locking mode is automatically released.
In the bus charging protection operation, when the bus is switched on or off in a bus-to-bus mode, the bus charging protection pressing plate is unlocked.
The switch position of the master or bus-bar switch is switched on from the off state, and the knife switch positions on the two sides are switched on from the on state.
IF (subject to total OR bus connection, section switch number) =1 AND-4 (disconnecting link number) =1 (OR × -5 (disconnecting link number) = 0), the operation authority of the bus charging protection pressing plate is unlocked.
When the switch is switched on or off, the knife switches on two sides are switched on or off, and the two-stage unlocking and locking modes are automatically released.
Remote signaling and secondary pressing plate process:
the secondary remote signaling light is on, the protection fault is marked, and the secondary pressing plate at the interval is withdrawn, so that the switch is prevented from being tripped by mistake.
The position of the same interval switch is the same, the positions of the knife switches on two sides are in the closed position, but the star protective device is in failure, the star protective device is abnormal, and the communication of the star protective device is interrupted, so that the self-light signal is sent.
IF (switch number) =1 AND-2 (knife gate number) =1 AND-4 (knife gate number) =1 (OR × -5 (knife gate number) = 1), then the whole pressing plate operation authority of the set of fault OR abnormal protection device is unlocked in the interval.
Step 2, according to the operation judgment result in the step 1, the unlocked pressing plate can be operated, and the soft pressing plate and the hard pressing plate are selected;
the specific steps of the step 2 comprise:
(1) Soft pressing plate operation: the operator firstly checks the position states of the monitoring system and the acquisition system, the remote signaling information is correct and abnormal, the unlocking/locking mode allows operation, the operation is confirmed by the guardian, and after the key is correctly checked, the operation content is transmitted to the next stage for logic check.
The method provides two modes of single selection and batch selection, namely single pressing plate operation and batch operation:
single pressing plate: the selection is made by inputting the name of the interval, selecting the name of the protection device, the name of the pressing plate, and the operation of putting in/out.
Batch operation: the pressing plate corresponding to the interval or a certain set of protection device is thrown/retreated, so that the operation is more convenient and faster.
(2) Hard pressing operation: the operation related to the hard pressing plate forms electronic sequence information, the electronic sequence information is transmitted to a next-stage logic module, the electronic sequence information is transmitted to a station for back correction after the logic verification is correct, executable electronic sequence information is generated after the logic verification is correct, and when a certain pressing plate needs to be operated, an anti-misoperation locking system controls the corresponding pressing plate acquisition module accessory to indicate light to prompt an operator to operate; and when the operation is wrong, a light alarm is realized.
Step 3, receiving an operation instruction sent by the operation module, and performing secondary logic verification;
the specific method of the step 3 comprises the following steps:
the method is combined with the operation of primary equipment, anti-error logic of a secondary system is formulated on an anti-error system, simulation rehearsal is started through an operation module, the secondary system is carried out during the simulation rehearsal, the logical relationship between a secondary system pressing plate and the primary equipment or between the pressing plate and the pressing plate is verified, comprehensive anti-error from the primary equipment to the secondary pressing plate is formed, and the risk which is possibly generated is logically evaluated.
The logic module carries out logic check to generate an executable operation sequence:
and comparing the operation object executed by the operation module, the name of the pressing plate and the operation instruction of putting and withdrawing the pressing plate with the protection fixed value in the protection device, and if the logic verification is correctly carried out.
The sequence logic is: a throw-in protection function pressing plate, a throw-in protection tripping pressing plate and a throw-in main outlet pressing plate. After the sequence is generated, the sequence is compared with a protection fixed value again:
all the pressing plates needing to be put into the operation are all in the putting-in position, all the pressing plates needing to be withdrawn are all in the withdrawing position, the tripping pressing plate is put into the operation, and the total outlet pressing plate is put into the operation.
Step 4, receiving the instruction after passing the logic verification, sending the instruction into a station, aligning the states of the primary equipment and the secondary pressing plate again before operation, and judging that the equipment is not abnormal;
in the embodiment, the conditions that the control handle is at a far position, the states of the pressing plate in and out are consistent and the like are all satisfied.
And 5, the transformer substation primary equipment receives a remote control instruction, remotely controls the switch to be switched on/off, sends the shifted switch position upwards, the secondary pressing plate receives the remote control instruction, remotely or locally operates the switching-on/off pressing plate, sends the switched-off pressing plate in a state upwards, and completes corresponding changes of the actual position of the primary equipment, the actual position of the secondary equipment, the position of the monitoring background and the position of the anti-misoperation locking system after alignment again, so that the operation is completed.
It should be emphasized that the embodiments described herein are illustrative rather than restrictive, and thus the present invention is not limited to the embodiments described in the detailed description, but also includes other embodiments that can be derived from the technical solutions of the present invention by those skilled in the art.
Claims (6)
1. The utility model provides a secondary system operation mistake preventing shutting system which characterized in that: the method comprises the following steps: the system comprises a secondary acquisition module, a secondary unlocking/locking module, a secondary operation module and a secondary logic module, wherein the output end of the secondary acquisition module is connected with the secondary unlocking/locking module and is used for acquiring and synchronizing remote signaling information tables of a real-time database of a monitoring system and sending the acquired state information quantity to the secondary unlocking/locking module of the next stage by a one-bit two-source code '0' or '1'; the output end of the secondary unlocking/locking module is connected with the secondary operation module and used for obtaining an unlocking/locking criterion result according to the information quantity output by the secondary acquisition module and sending the unlocking/locking criterion result to the operation module in a grading manner; the output end of the operation module is connected with the secondary logic module and used for selecting a remote control object according to an unlocking/locking criterion result of the secondary unlocking/locking module and sending the switching/returning operation of the soft pressing plate and the hard pressing plate to the secondary logic module; the secondary logic module is used for outputting a logic evaluation judgment result according to the remote control object selection and the pressing plate input/output selection operation instruction output by the operation module, sending the logic evaluation judgment result to the next-stage station for performing the correction, outputting a correction result and an executable operation instruction to the next-stage equipment for execution by the station for outputting the equipment end correction result and the executable operation instruction, and executing the execution equipment according to the executable operation instruction output by the station for performing the correction.
2. The secondary system operation anti-misoperation lockout system of claim 1, wherein: the secondary collection module includes: the soft pressing plate state quantity acquisition module directly extracts the state of the pressing plate, namely 'input' or 'exit', the exit state is represented by '0', and the input state is represented by '1', in the real-time database;
the hard pressing plate state quantity acquisition module is additionally provided with a pressing plate state quantity acquisition accessory, the throwing and withdrawing states of the pressing plate are converted into semaphore to be sent to the monitoring system, the state of the pressing plate, namely 'throwing' or 'withdrawing', is represented by '0' and is represented by '1';
the remote signaling state quantity acquisition module extracts the remote signaling state quantity from the real-time database, and the remote signaling state quantity is used for signaling or resetting, wherein 0 represents the resetting state, and 1 represents the signaling state.
3. A secondary system operation anti-misoperation locking method is characterized in that: the method comprises the following steps:
step 1, an unlocking/locking module receives the pressing plate state and remote signaling information output by a secondary acquisition module, and operation judgment is carried out according to the conditions of primary and secondary remote/local pressing plates at corresponding intervals;
step 2, according to the operation judgment result in the step 1, the unlocked pressing plate can be operated, and the soft pressing plate and the hard pressing plate are selected;
step 3, receiving an operation instruction sent by the operation module, and performing secondary logic verification;
step 4, receiving the instruction after passing the logic verification, sending the instruction into a station, aligning the states of the primary equipment and the secondary pressing plate again before operation, and judging that the equipment is not abnormal;
and 5, the primary equipment of the transformer substation receives the remote control instruction, remotely controls the switch to be switched on/off, sends the shifted switch position upwards, the secondary pressing plate receives the remote control instruction, remotely or locally operates the switching pressing plate, sends the switched pressing plate to the upper position, and completes corresponding changes in the actual position of the primary equipment, the actual position of the secondary equipment, the position of the monitoring background and the position of the anti-misoperation locking system after alignment again, so that the operation is completed.
4. The secondary system operation anti-misoperation lockout method according to claim 3, wherein: the specific steps of the step 1 comprise:
(1) The pressing plate is maintained, the primary locking authority is triggered manually, the pressing plate can be operated on the spot in a secondary protection and automatic control screen cabinet, and logic verification and alarm prompt are not carried out; after the first-level far/local pressing plate is restored to be thrown far, the system automatically checks the current pressing plate state and the previous pressing plate state, and if the current pressing plate state and the previous pressing plate state are inconsistent, an alarm is given; if the check passes, the interval is still brought into the anti-misoperation locking system, and the operation of the secondary system can still be carried out by the check of the five-prevention system.
(2) The remote signaling with the secondary locking identification can automatically trigger the secondary locking permission of the anti-misoperation locking system, the corresponding protection device is locked, the device does not realize the functions of outlet tripping and the like any more, but the remote signaling is kept to be sent upwards; after relay protection and field verification and defect processing of automatic professionals are finished, the remote signaling photon board signal is reset, and the secondary locking authority of the anti-misoperation locking system is automatically released; the interval is still included in the anti-misoperation locking system, and the operation of the secondary system is still carried out by the check of the anti-misoperation locking system.
5. The secondary system operation anti-misoperation lockout method according to claim 3, wherein: the specific steps of the step 2 comprise:
(1) Soft pressing plate operation: the operator firstly checks the position states of the monitoring system and the acquisition system, the telesignaling information is error-free and abnormal, the unlocking/locking mode allows operation, the operation contents are transmitted to the next stage for logic check after the operation contents are confirmed by the guardian and the key check is correct;
namely, under the remote control mode, the selection of a remote control object and the projection/retreat selection of the pressing plate are executed, and the method provides two modes of single selection and batch selection, namely single pressing plate operation and batch operation:
single pressing plate: the selection is performed by inputting the name of the interval, selecting the name of the protection device, selecting the name of the pressing plate, and performing the operation of throwing/withdrawing.
Batch operation: putting in/out a pressing plate at a corresponding interval or corresponding to a certain set of protection device;
(2) And (3) hard pressing operation: the operation related to the hard pressing plate forms electronic sequence information, the electronic sequence information is transmitted to a next-stage logic module, the electronic sequence information is transmitted to a station for back correction after the logic verification is correct, executable electronic sequence information is generated after the logic verification is correct, and when a certain pressing plate needs to be operated, an anti-misoperation locking system controls the corresponding pressing plate acquisition module accessory to indicate light to prompt an operator to operate; and when the operation is wrong, light alarm is realized.
6. The secondary system operation anti-misoperation lockout method according to claim 3, wherein: the specific method of the step 3 comprises the following steps:
the method is combined with the operation of primary equipment, anti-error logic of a secondary system is formulated on an anti-error system, simulation rehearsal is started through an operation module, the secondary system is carried out during the simulation rehearsal, the logical relationship between a secondary system pressing plate and the primary equipment or between the pressing plate and the pressing plate is verified, comprehensive anti-error from the primary equipment to the secondary pressing plate is formed, and the risk which is possibly generated is logically evaluated.
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| CN202210721465.0A CN115276220A (en) | 2022-06-24 | 2022-06-24 | Secondary system operation anti-misoperation locking system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115833399A (en) * | 2023-01-09 | 2023-03-21 | 南方电网调峰调频发电有限公司 | Anti-misoperation method and device for centralized control system of pumped storage power station |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115833399A (en) * | 2023-01-09 | 2023-03-21 | 南方电网调峰调频发电有限公司 | Anti-misoperation method and device for centralized control system of pumped storage power station |
| CN115833399B (en) * | 2023-01-09 | 2023-05-30 | 南方电网调峰调频发电有限公司 | Misoperation preventing method and device for central control system of pumped storage power station |
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