Locking system capable of preventing misoperation

Abstract

The invention provides a locking system for preventing misoperation, which comprises a monitoring unit, a driving unit and a controller, the monitoring unit is used for acquiring the running state, the electrical measurement value, the pressing plate state, the ground wire state and the operation state of the equipment in real time; the driving unit is used for controlling a lock connected with the driving unit to execute a corresponding control action according to the received control instruction; and the controller is used for judging the state of the lock according to the received running state, the electrical measurement value, the pressing plate state, the ground wire state and the operation state, and carrying out anti-error checking according to the judgment result. According to the invention, comprehensive and real-time intelligent anti-error checking is carried out on operation site remote control operation and on-site operation on the whole link from simulation rehearsal to actual execution based on the obtained real-time equipment operation state, the obtained real-time measurement value, the obtained real-time pressing plate state, the obtained real-time ground wire state and the obtained real-time operation state.

Description

Technical Field

[0001] The invention relates to the technical field of power system automation, and in particular to a locking system for preventing misoperation. Background Art

[0002] The anti-error interlocking system is an important means of preventing the power system from switching erroneous operation. From the initial mechanical / electromagnetic interlocking to the mechanical / electrical interlocking, and then to the microcomputer-based independent anti-error interlocking, it has played an important role in different stages. At present, the independent microcomputer-based anti-error interlocking system is widely used in the field of power grid error prevention.

[0003] In addition, with the improvement of substation construction, the access control system of equipment rooms and the lock control system of cabinet doors have gradually become part of substation auxiliary equipment, and have been used to a certain extent as an auxiliary means of substation security and personnel management.

[0004] For the above situation, from the technical level, the existing problems of error prevention are as follows: the current error prevention judgment logic is mainly judged by the "AND, OR, NOT" method between devices, which requires manual editing of a large number of logical formulas. In actual applications, it is impossible to exhaust all possible operation situations through the "exhaustive" method, and it is impossible to realize the identification and prevention of "wrong pull switch" and "wrong entry into the live interval". At the same time, the on-site audit volume is large, the readability is poor, the complex logic is difficult to understand, and it is not easy to verify. When the existing error prevention logic cannot be completely exhaustive, some special operations need to be configured with "unlocking keys". Once the universal unlocking key is authorized to be used or the universal key is used privately, the operator can operate any device at will. Over time, the universal key leaves a "convenient door" for misoperation. During the execution process after the simulation rehearsal of the switching operation, the computer key of the "five protections" of the independent microcomputer is in "offline operation". In fact, it is only the control of the operation sequence. It cannot solve the problem of adjustment of the operation mode after the simulation rehearsal, which may cause misoperation. At the same time, the offline key also has problems such as "empty travel" and "jump operation". The five protections of independent microcomputers only solve the five protection problems of primary equipment operation, but do not solve the problems of missing temporary ground wires and line ground wires, and there are blind spots in preventing errors. At present, the secondary equipment error prevention mainly relies on red curtains and other reminder signs. The keys of secondary screen cabinets are universal, and adjacent screen cabinets are easily opened or touched by mistake. There is a lack of effective means to prevent errors in secondary equipment operation. There is a lack of physical protection measures for network equipment management. Network equipment such as routers and switches and network equipment interfaces are in a relatively open state in the substation. People can open network screen cabinets, operate network equipment, and connect external devices at will when they enter the main control room and protection room, which poses a safety hazard. There are problems with personnel access protection. There is a lack of control measures for unauthorized personnel to enter sensitive places in the substation, which is prone to dangerous hazards. The error prevention problems related to security have not been solved. In order to solve various error prevention problems, there are multiple subsystems in the substation, and the permissions, data, and functions between systems are not effectively integrated. In particular, the one-key access system only solves the problem of management convenience and basically has no protection capabilities. Summary of the invention

[0005] The purpose of the present invention is to provide a locking system that prevents misoperation and solve the technical problems of the existing methods.

[0006] In one aspect, a locking system for preventing misoperation is provided, comprising:

[0007] A monitoring unit, a driving unit and a controller; the monitoring unit is used to obtain the operating status, electrical measurement values, pressure plate status, ground wire status and operating status of the equipment in real time; the driving unit is used to control the lock connected thereto to perform corresponding control actions according to the received control instructions; the controller is used to judge the status of the lock according to the received operating status, electrical measurement values, pressure plate status, ground wire status and operating status, and perform anti-error calibration according to the judgment result.

[0008] Preferably, the monitoring unit at least includes a grounding status collector for counting the storage, use and return of the grounding wire; a pressure plate status collection unit for monitoring the insertion and withdrawal status of the hard pressure plate through non-electrical contact and sending it to the controller.

[0009] Preferably, the grounding status collector is also used to wirelessly communicate with the controller, transmit the grounding wire connection status back in real time, and upload it to the controller.

[0010] Preferably, the pressure plate status acquisition unit is also used to obtain the pressure plate status of the entire station and upload it to the controller.

[0011] Preferably, the driving unit is further used to record the operation of the lock connected thereto according to a preset operation logic classification, wherein the operation logic classification includes at least open or close, and the operation record includes at least unlocking or locking.

[0012] Preferably, it also includes a mobile device, which is used to connect with the lock and the controller through wireless communication and is deployed together with the lock in a preset safety zone.

[0013] Preferably, the mobile device at least includes a computer key for obtaining permission for the next operation according to real-time changes in the status of the temporary grounding wire or the status of the hard pressure plate.

[0014] Preferably, the controller is further used to set a plurality of security zones of different levels according to the zone where the device is located and the device attributes, and monitor the access and feedback of the device data and status information in the security zone in real time;

[0015] The security area at least includes a high-level security area or a low-level security area.

[0016] In summary, the implementation of the embodiments of the present invention has the following beneficial effects:

[0017] The locking system for preventing misoperation provided by the present invention is based on the acquired real-time equipment operating status, electrical measurement values, real-time pressure plate status, real-time ground wire status, and real-time operation status, and performs comprehensive and real-time intelligent misoperation prevention verification on remote control operations and on-site operations at the work site in the entire process from simulation rehearsal to actual execution. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, without paying creative labor, other drawings obtained based on these drawings still belong to the scope of the present invention.

[0019] Figure 1 Schematic diagram of a locking system for preventing misoperation in an embodiment of the present invention. DETAILED DESCRIPTION

[0020] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings.

[0021] like Figure 1 FIG. 1 is a schematic diagram of an embodiment of a locking system for preventing misoperation provided by the present invention. In this embodiment, the system includes:

[0022] Monitoring unit, drive unit and controller; the monitoring unit is used to obtain the operating status, electrical measurement values, pressure plate status, ground wire status and operation status of the equipment in real time; the drive unit is used to control the lock connected to it to perform corresponding control actions according to the received control instructions; the controller is used to judge the status of the lock according to the received operating status, electrical measurement values, pressure plate status, ground wire status and operation status, and perform error prevention verification according to the judgment result. The error prevention concept is expanded from the error prevention of primary equipment operation (remote control operation, sequential control operation, local operation) to the error prevention of secondary equipment operation, maintenance operation (primary equipment maintenance, secondary equipment maintenance), outsourcing work control and operation and maintenance operation (equipment inspection, daily operation and maintenance). With the basic support of diversified error prevention means, management requirements are improved and error prevention applications in various scenarios are expanded. The safety II zone deployed by the host controller supports substation operation monitoring together with the comprehensive application host, and interacts with the error prevention module of the centralized control station through the service gateway host.

[0023] In one embodiment, the monitoring unit at least includes a grounding state collector for counting the storage, use and return of the grounding wire; a pressure plate state collection unit for monitoring the throw-in and retraction states of the hard pressure plate through non-electrical contact and sending it to the controller. The grounding state collector is also used to wirelessly communicate with the controller, send back the grounding wire hooking state in real time, and upload it to the controller. The pressure plate state collection unit is also used to obtain the pressure plate state of the entire station and upload it to the controller. It can be understood that the grounding state collector can be an intelligent grounding wire cabinet; the pressure plate state collection unit can be a state detection device. The intelligent grounding wire cabinet supports management functions such as the storage, use and return of the grounding wire, and supports data interaction with the comprehensive intelligent anti-error host. The online ground wire head supports wireless communication with the comprehensive intelligent anti-error host, and sends back the grounding wire hooking state in real time. The online computer key obtains the authority for the next operation according to the real-time change of the temporary grounding wire state. The state detection device includes a pressure plate state collection unit that uses the non-electrical contact principle to monitor the throw-in and retraction states of the hard pressure plate and sends it to the pressure plate state monitoring device. The comprehensive intelligent error prevention system obtains the status of the secondary hard pressing plate of the entire station from the pressing plate status monitoring device. The online computer key obtains the authority for the next operation based on the real-time changes in the status of the hard pressing plate.

[0024] In one embodiment, the drive unit is also used to record the operation of the lock connected thereto according to the preset operation logic classification, wherein the operation logic classification includes at least opening or closing, and the operation record includes at least unlocking or locking. Understandably, each lock operation record can be uploaded to achieve edge-end collaboration and enhance the overall anti-error capability of the system. At the same time, in order to facilitate the installation of the lock and ensure the operation of the lock, the high-reliability lock adopts a passive design. The communication between the smart lock and the computer key adopts authentication access and national secret algorithm to ensure access security and data security. The smart lock adopts a motor drive structure design, and opening and closing are divided into two logical operation steps. Uploading two records of unlocking and locking indirectly reflects the state of the cabinet door to form a working closed loop. Wireless carrier communication technology is adopted to obtain power, transmit instructions and feedback status information through the electronic key. The smart lock adopts a passive design and does not require battery maintenance; through a large number of material processing improvement test experiments and field verification, a special processing technology has been formed to ensure long-term normal use under various harsh conditions (high altitude, ultra-low temperature, high temperature and high humidity, high salt fog).

[0025] One embodiment also includes a mobile device, which is used to connect to the lock and the controller through wireless communication, and is deployed together with the lock in a preset safety zone. The mobile device at least includes a computer key used to obtain the permission for the next operation according to the real-time change of the temporary grounding wire state or the hard pressure plate state. It is understandable that in this embodiment, mobile devices such as online computer keys and intelligent grounding wires are deployed together with the front-end anti-mistake locks in the safety IV zone using wireless communication, and access the intranet through the station-side security access platform; wireless devices including intelligent grounding wire modules and online computer keys use low-power, long-distance wireless transmission technologies such as LoRa to meet the mobile access needs in the substation; encryption authentication function transmission protocols are used between the intelligent grounding wire module, computer keys and wireless aggregation nodes, and computer keys and intelligent locks, supporting national secret algorithms to ensure data security and reliability; computer keys and intelligent locks use wireless carrier communication technology, and realize power supply and data communication interaction through one antenna, reducing the size of the equipment and reducing component costs.

[0026] In one embodiment, the controller is also used to set up multiple security areas of different levels according to the area where the device is located and the device attributes, and to monitor the access and feedback of the device data and status information in the security area in real time; wherein the security area includes at least a high-level security area or a low-level security area. Understandably, since devices such as vehicle barriers and face recognition access control involve video image recognition information, they are still deployed in the security zone IV using wired communication. The security zone IV adds an anti-error edge agent to achieve access, feedback and regional autonomy of the data and status information of the anti-error device in the zone IV, and interacts with the comprehensive intelligent anti-error host through forward and reverse isolation devices. The security zone IV deploys a wireless network, and realizes the secure access and management of wireless devices through means such as national secret algorithm software certification, State Grid core "encryption chip", and secure access platform.

[0027] In summary, the implementation of the embodiments of the present invention has the following beneficial effects:

[0028] The locking system for preventing misoperation provided by the present invention is based on the acquired real-time equipment operating status, electrical measurement values, real-time pressure plate status, real-time ground wire status, and real-time operation status, and performs comprehensive and real-time intelligent misoperation prevention verification on remote control operations and on-site operations at the work site in the entire process from simulation rehearsal to actual execution.

[0029] The above disclosure is only the preferred embodiment of the present invention, which certainly cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope of the present invention.

Claims

1. A locking system for preventing misoperation, characterized in that: include: Monitoring unit, drive unit and controller; The monitoring unit is used to obtain the running status, electrical measurement value, pressure plate status, ground wire status and operation status of the device in real time; the driving unit is used to control the lock connected thereto to perform corresponding control actions according to the received control instructions; The controller is used to judge the state of the lock according to the received running state, electrical measurement value, pressure plate state, ground wire state and operation state, and perform anti-error calibration according to the judgment result.

2. The system according to claim 1, characterized in that The monitoring unit at least includes a grounding status collector for counting the storage, use and return of the grounding wire; a pressure plate status collection unit for monitoring the insertion and withdrawal status of the hard pressure plate through non-electrical contact and sending it to the controller.

3. The system according to claim 2, characterized in that The grounding status collector is also used to wirelessly communicate with the controller, transmit the grounding wire connection status in real time, and upload it to the controller.

4. The system according to claim 3, characterized in that The pressure plate status acquisition unit is also used to obtain the pressure plate status of the entire station and upload it to the controller.

5. The system according to claim 4, characterized in that The driving unit is further used to record the operation of the lock connected thereto according to a preset operation logic classification, wherein the operation logic classification includes at least open or close, and the operation record includes at least unlocking or locking.

6. The system according to claim 5, characterized in that Also included is a mobile device, which is used to connect with the lock and the controller via wireless communication and is deployed together with the lock in a preset safety zone.

7. The system according to claim 6, characterized in that The mobile device at least includes a computer key for obtaining the authority for the next operation according to the real-time change of the temporary grounding wire state or the hard pressure plate state.

8. The system according to claim 7, characterized in that The controller is also used to set a plurality of security zones of different levels according to the zone where the device is located and the device attributes, and monitor the access and feedback of the device data and status information in the security zone in real time; The security area at least includes a high-level security area or a low-level security area.

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