Dispatching end knife switch double-confirmation automatic discrimination method and system
By introducing a dual signal confirmation mechanism of main criterion and auxiliary criterion in the scheduling OCS system, the remote signal system and the logic are used to perform double confirmation to automatically judge the split and closing status of the knife switch, which solves the problem of low manual judgment efficiency and high risk of misjudgment by dispatchers, improves the accuracy and efficiency of confirmation, and reduces the operational risk.
Patent Information
- Application Number
- CN202411509663.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-28
- Publication Date
- 2025-03-14
AI Technical Summary
During power grid operation, dispatchers need to manually judge the position of the knife switch, resulting in low judgment efficiency and high risk of misjudgment, which affects the efficiency and safety of dispatching operations.
By introducing a dual signal confirmation mechanism of main criterion and auxiliary criterion in the scheduling OCS system, the remote signal system is used to collect and analyze the closing signal and quantile signals of the knife switch, and perform double confirmation with the logic to automatically judge the opening and closing status of the knife switch.
It effectively reduces misjudgment caused by environmental factors, improves the accuracy and efficiency of knife switch position confirmation, reduces the working pressure and operation risks of dispatchers, and improves the safety and stability of power grid operation.
Smart Images
Figure CN119628205A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of electric power technology, and in particular to a method and system for automatic double-confirmation identification of a dispatching-end knife switch. Background Art
[0002] With the continuous improvement of the automation level of the power system, especially since the implementation of programmed operation, the safety and reliability of power grid operation have become the focus of attention. In order to ensure that the position of the knife switch meets the dual-factor authentication while alleviating the workload of on-site personnel, the Kunming Power Grid has carried out a large-scale double confirmation transformation of the knife switch position, so that the knife switch has the main and auxiliary criteria for the opening and closing positions. However, during the programmed operation process, the dispatcher confirms the position of the knife switch by manually judging the position of the main and auxiliary criteria. On the one hand, the efficiency of manual judgment is not high, which in turn affects the efficiency of the dispatcher's programmed operation; on the other hand, the dispatcher is easily affected by factors such as ambient light and visual errors, which leads to misjudgment of the actual position of the knife switch, resulting in the risk of misoperation. Summary of the invention
[0003] In view of the above-mentioned problems, the present invention is proposed.
[0004] Therefore, the technical problem solved by the present invention is: to improve the judgment efficiency and accuracy of the double confirmation of the knife switch, and to consider exploring a more efficient and accurate knife switch position confirmation method through technical means in the dispatching OCS system, so as to realize the automatic judgment and identification of the double confirmation of the knife switch during the programmed operation process, and reduce the work pressure and operational risks of the dispatcher.
[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a dispatching end switch double confirmation automatic identification method, comprising:
[0006] Confirm the opening and closing positions of the knife switch through the main and auxiliary criteria;
[0007] The remote signaling system collects the combined position signal and the split position signal of the main criterion and the auxiliary criterion;
[0008] Confirm the opening and closing status of the knife switch by combining the position change signals of the main judgment criteria and auxiliary judgment criteria with logic;
[0009] When the position change signals of the main criterion and the auxiliary criterion simultaneously send out signals from closed to open or from open to closed, the open and closed states of the knife switch are confirmed.
[0010] As a preferred solution of the double confirmation automatic identification method of the dispatching end knife switch described in the present invention, wherein: the main judgment criterion is the auxiliary switch contact signal of the knife switch.
[0011] As a preferred solution of the double-confirmation automatic identification method of the dispatching end knife switch described in the present invention, wherein: the auxiliary criterion is a sensor signal or image recognition signal from a different source from the main criterion.
[0012] As a preferred solution of the dual confirmation automatic identification method of the dispatching end knife switch of the present invention, wherein: the acquisition of the closing signal and the opening signal of the main criterion and the auxiliary criterion includes determining that the knife switch changes from the opening position to the closing position when the closing signal of the main criterion and the auxiliary criterion is 1 at the same time, and the opening signal is 0 at the same time;
[0013] When the closing signals of the main criterion and the auxiliary criterion are both 0, and the opening signals are both 1, it is determined that the knife switch changes from the closing position to the opening position.
[0014] As a preferred solution of the double confirmation automatic discrimination method of the dispatching end knife switch of the present invention, the main criterion is the auxiliary switch contact signal of the knife switch opening and closing position;
[0015] The auxiliary criterion is other criterion which is not based on the same principle or has a different origin from the auxiliary switch contact signal.
[0016] As a preferred solution of the double-confirmation automatic identification method of the dispatching end knife switch described in the present invention, wherein: the auxiliary judgment criterion is the actual physical position of the knife switch obtained by a sensor, a micro switch or image recognition processing.
[0017] As a preferred scheme of the double confirmation automatic identification method of the dispatching end knife switch described in the present invention, wherein: the confirmation of the opening and closing status of the knife switch includes the closing signal and the opening signal of the main judgment criterion and the auxiliary judgment criterion, which are sent to the dispatching OCS system through the telesignaling system, and double confirmation is performed using AND logic.
[0018] Another object of the present invention is to provide a dispatching end knife switch double confirmation automatic discrimination system, which can solve the problems of low efficiency, high risk of misjudgment and heavy burden of manual operation in the existing power system by constructing the dispatching end knife switch double confirmation automatic discrimination system, and provide a dispatching end knife switch double confirmation automatic discrimination method. The present invention automatically collects and analyzes the main judgment criteria and auxiliary judgment criteria of the knife switch through technical means, and judges the opening and closing state of the knife switch through "AND logic", thereby realizing automatic double confirmation.
[0019] To solve the above technical problems, the present invention provides the following technical solutions: a dispatch end knife switch double confirmation automatic discrimination system, comprising: a position confirmation module, a signal judgment module, a state judgment module and a double confirmation module; the position confirmation module confirms the opening and closing positions of the knife switch through the main judgment criteria and the auxiliary judgment criteria; the signal judgment module collects the closing signal and the opening signal of the main judgment criteria and the auxiliary judgment criteria through the remote signal system; the state judgment module confirms the opening and closing states of the knife switch by synthesizing the displacement signals of the main judgment criteria and the auxiliary judgment criteria with logic; the double confirmation module is used to confirm the opening and closing states of the knife switch when the displacement signals of the main judgment criteria and the auxiliary judgment criteria simultaneously send signals from closing to opening or from opening to closing.
[0020] A computer device comprises a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the steps of the above-mentioned method for automatic double confirmation of a dispatching end knife switch are implemented.
[0021] A computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps of the above-mentioned dispatching end knife switch double confirmation automatic discrimination method.
[0022] Beneficial effects of the present invention: The dual confirmation automatic identification method of the dispatching-end knife switch provided by the present invention effectively reduces the misjudgment caused by environmental factors (such as light, visual errors, etc.) in traditional judgments by introducing a dual signal confirmation mechanism of main criteria and auxiliary criteria, and ensures high-precision confirmation of the opening and closing status of the knife switch. The dispatching OCS system automatically collects and processes the main criteria and auxiliary criteria signals of the knife switch, and uses "AND logic" for automatic judgment, eliminating manual operation steps, realizing the automation of knife switch position confirmation, and improving the efficiency and reliability of dispatching operations. Through the automated double confirmation process, operational errors caused by human factors are avoided, the risk of misoperation in power grid operation is reduced, and the safety and stability of the system are improved. By introducing AND logic for signal processing, the state changes of the knife switch can be effectively identified, ensuring the system's timely response to changes in the position of the knife switch, and further improving the stability and safety of power grid operation. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.
[0024] Figure 1 An overall flow chart of a method for automatic double confirmation of a dispatching-end knife switch provided by an embodiment of the present invention.
[0025] Figure 2 A double confirmation criterion diagram of a dispatching end knife switch double confirmation automatic discrimination method provided by an embodiment of the present invention.
[0026] Figure 3 The present invention provides an overall structural diagram of a dual confirmation automatic discrimination system for a dispatching-end knife switch according to an embodiment of the present invention.
[0027] Figure 4 An experimental operation diagram of a method for automatic double confirmation of a dispatching-end knife switch provided by an embodiment of the present invention. DETAILED DESCRIPTION
[0028] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the drawings of the specification. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary persons in the art without creative work should fall within the scope of protection of the present invention.
[0029] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
[0030] Example 1
[0031] Reference Figure 1-Figure 2 , is an embodiment of the present invention, and provides a dispatching end switch double confirmation automatic discrimination method, comprising:
[0032] Confirm the opening and closing positions of the knife switch through the main and auxiliary criteria;
[0033] The remote signaling system collects the combined position signal and the split position signal of the main criterion and the auxiliary criterion;
[0034] Confirm the opening and closing status of the knife switch by combining the position change signals of the main judgment criteria and auxiliary judgment criteria with logic;
[0035] When the position change signals of the main criterion and the auxiliary criterion simultaneously send out signals from closed to open or from open to closed, the open and closed states of the knife switch are confirmed.
[0036] The main criterion is the auxiliary switch contact signal of the knife switch.
[0037] The auxiliary criterion is a sensor signal or an image recognition signal having a different source from the main criterion.
[0038] The collecting of the closing signal and the opening signal of the main criterion and the auxiliary criterion includes determining that the knife switch changes from the opening position to the closing position when the closing signals of the main criterion and the auxiliary criterion are both 1 and the opening signals are both 0;
[0039] When the closing signals of the main criterion and the auxiliary criterion are both 0, and the opening signals are both 1, it is determined that the knife switch changes from the closing position to the opening position.
[0040] The main criterion is the auxiliary switch contact signal of the knife switch opening and closing position;
[0041] The auxiliary criterion is other criterion which is not based on the same principle or has a different origin from the auxiliary switch contact signal.
[0042] The auxiliary criterion is the actual physical position of the knife switch obtained through a sensor, a micro switch or image recognition processing.
[0043] The confirmation of the opening and closing status of the knife switch includes sending the closing signal and the opening signal of the main judgment criterion and the auxiliary judgment criterion to the dispatching OCS system through the remote signaling system, and performing double confirmation using the AND logic.
[0044] Generally, two status criteria from different sources are used to simultaneously change to confirm that the knife switch has been opened or closed. These two status criteria are usually called the main criterion and auxiliary criterion for the opening and closing positions of the knife switch.
[0045] The main criterion is the auxiliary switch contact signal of the knife switch opening and closing position. The auxiliary criterion is other criteria that are not based on the same principle or source as the auxiliary switch contact signal. The general technical routes include electromagnetic induction principle sensor technical route, micro switch technical route, video image recognition technical route, etc. The actual physical position of the knife switch (auxiliary criterion) obtained by sensor, micro switch or image recognition processing will be processed into standardized remote signal information in the signal acquisition stage. The specific description requirements are shown in Table 1.
[0046] Table 1 Information requirements for sending remote signal information based on auxiliary judgment of switch position
[0047]
[0048] The judgment logic of the main criteria and auxiliary criteria includes
[0049] ①Synthesize the main criterion displacement signal and the auxiliary criterion displacement signal
[0050] When the substation main criterion closed position telesignal value 1 (0) and the main criterion open position telesignal value 0 (1) are simultaneously sent to the ground dispatching automation system, the "AND logic" is used to synthesize the change signal of the main criterion position from closed to open (from open to closed).
[0051] When the substation auxiliary criterion closed position telesignal value 1 (0) and the auxiliary criterion open position telesignal value 0 (1) are simultaneously sent to the ground dispatching automation system, the "AND logic" is used to synthesize the auxiliary criterion position change signal from closed to open (from open to closed).
[0052] ② Double confirmation of the switch position is achieved through the displacement of the main criterion and the auxiliary criterion
[0053] When the main criterion and the auxiliary criterion simultaneously send out the change signal of "from closed to open" or "from open to closed", the dispatching OCS system realizes the double confirmation of the switch position through "AND logic".
[0054] The judgment logic of the double confirmation criterion of the switch position is as follows: Figure 2 as shown.
[0055] After the operation of the on-site equipment is completed, the dispatching automation system confirms the switch position status based on the main and auxiliary judgment criteria of the switch position sent from the plant station. If the confirmation is passed, the next step is executed; if the double confirmation fails, the process is interrupted and the dispatching automation system gives relevant reminders.
[0056] After the implementation of this project, the automatic double confirmation of the switch position at the dispatching end is applied in the process of programmed operation, which improves the efficiency of equipment operation, reduces the work pressure of dispatchers and on-site operators, and improves the level of automation application at the dispatching end. At the same time, after the implementation of the project, the method experience can be promoted to other municipal bureaus in the province.
[0057] Example 2
[0058] Reference Figure 3 , is an embodiment of the present invention, providing a dispatching end switch double confirmation automatic discrimination system, comprising:
[0059] Position confirmation module 100, signal determination module 200, state determination module 300 and dual confirmation module 400;
[0060] The position confirmation module 100 confirms the opening and closing positions of the knife switch through the main criteria and the auxiliary criteria;
[0061] The signal judgment module 200 collects the combined signal and the partial signal of the main judgment criterion and the auxiliary judgment criterion through the remote signaling system;
[0062] The state judgment module 300 confirms the opening and closing state of the knife switch by combining the position change signals of the main judgment criteria and the auxiliary judgment criteria with logic;
[0063] The double confirmation module 400 is used to confirm the opening and closing state of the knife switch when the position change signals of the main criterion and the auxiliary criterion simultaneously send signals from closing to opening or from opening to closing.
[0064] Example 3
[0065] An embodiment of the present invention is different from the first two embodiments in that:
[0066] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc., which can store program codes.
[0067] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in conjunction with such instruction execution systems, devices or apparatuses. For the purposes of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in conjunction with such instruction execution systems, devices or apparatuses.
[0068] More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection with one or more wires (electronic device), a portable computer disk case (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be a paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, deciphering or, if necessary, processing in another suitable manner, and then stored in a computer memory.
[0069] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, a plurality of steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.
[0070] Example 4
[0071] Reference Figure 4 , which is an embodiment of the present invention, provides a method for automatic double confirmation of the knife switch at the dispatching end. In order to verify the beneficial effects of the present invention, scientific demonstration is carried out through simulation experiments.
[0072] Through the click-to-print function, after selecting the instruction at the corresponding plant station, the program will pop up the operation ticket generation interface. After clicking the confirmation button, it will return to the operation ticket interface.
[0073] like Figure 4 As shown in the figure, the operation item "Check whether the 110kV Shangliangchun I return 1411 knife switch is closed" in the figure, according to the previous technical means, the plant and station operation and maintenance personnel need to go to the site to confirm the actual position of the knife switch. However, after the implementation of this project, the software will detect whether there are corresponding 110kV Shangliangchun I return 1411 knife switch main judgment position, 110kV Shangliangchun I return 1411 knife switch main judgment position and 110kV Shangliangchun I return 1411 knife switch auxiliary judgment position, 110kV Shangliangchun I return 1411 knife switch auxiliary judgment position, if there are corresponding main judgment signal and auxiliary judgment signal, the software will complete the double confirmation of the actual position of the knife switch through the displacement of the main judgment and auxiliary judgment, and realize the judgment of whether the knife switch is in place through technical means. The operation and maintenance personnel do not need to go to the site to confirm the actual position of the gate, which relieves the operation of the on-site operation and maintenance personnel, and greatly improves the dispatching operation efficiency, and escorts the dispatcher to carry out programmed operations.
[0074] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.
Claims
1. A dispatching end switch double confirmation automatic identification method, characterized in that: include: Confirm the opening and closing positions of the knife switch through the main and auxiliary criteria; The remote signaling system collects the combined position signal and the split position signal of the main criterion and the auxiliary criterion; Confirm the opening and closing status of the knife switch by combining the position change signals of the main judgment criteria and auxiliary judgment criteria with logic; When the position change signals of the main criterion and the auxiliary criterion simultaneously send out signals from closed to open or from open to closed, the open and closed states of the knife switch are confirmed.
2. The dispatching end switch double confirmation automatic identification method according to claim 1 is characterized in that: The main criterion is the auxiliary switch contact signal of the knife switch.
3. The dispatching end switch double confirmation automatic identification method as claimed in claim 2 is characterized by: The auxiliary criterion is a sensor signal or an image recognition signal having a different source from the main criterion.
4. The dispatching end switch double confirmation automatic identification method as claimed in claim 3 is characterized by: The collecting of the closing signal and the opening signal of the main criterion and the auxiliary criterion includes determining that the knife switch changes from the opening position to the closing position when the closing signals of the main criterion and the auxiliary criterion are both 1 and the opening signals are both 0; When the closing signals of the main criterion and the auxiliary criterion are both 0, and the opening signals are both 1, it is determined that the knife switch changes from the closing position to the opening position.
5. The dispatching end switch double confirmation automatic identification method as claimed in claim 4 is characterized by: The main criterion is the auxiliary switch contact signal of the knife switch opening and closing position; The auxiliary criterion is other criterion which is not based on the same principle or has a different origin from the auxiliary switch contact signal.
6. The dispatching end switch double confirmation automatic identification method as claimed in claim 5, characterized in that: The auxiliary criterion is the actual physical position of the knife switch obtained through a sensor, a micro switch or image recognition processing.
7. The dispatching end switch double confirmation automatic identification method according to claim 6 is characterized in that: The confirmation of the opening and closing status of the knife switch includes sending the closing signal and the opening signal of the main judgment criterion and the auxiliary judgment criterion to the dispatching OCS system through the remote signaling system, and performing double confirmation using the AND logic.
8. A system using the dispatching end switch double confirmation automatic identification method as claimed in any one of claims 1 to 7, characterized in that: include: A position confirmation module (100), a signal determination module (200), a state determination module (300) and a double confirmation module (400); The position confirmation module (100) confirms the opening and closing positions of the knife switch through the main criterion and the auxiliary criterion; The signal judgment module (200) collects the combined signal and the partial signal of the main judgment criterion and the auxiliary judgment criterion through the remote signaling system; The state judgment module (300) confirms the opening and closing state of the knife switch by combining the position change signals of the main judgment criteria and the auxiliary judgment criteria with logic; The double confirmation module (400) is used to confirm the opening and closing state of the knife switch when the position change signals of the main criterion and the auxiliary criterion simultaneously send signals from closing to opening or from opening to closing.
9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the dispatching end knife switch double confirmation automatic discrimination method described in any one of claims 1 to 7 are implemented.
10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the dispatching end knife switch double confirmation automatic discrimination method described in any one of claims 1 to 7 are implemented.