Converter station three-section spare power automatic switching system control and switching method and device
By dividing the automatic transfer switch system into three independent bus sections and adding closing condition logic, the problem of automatic switching when the bus loses power in manual mode in the three-section automatic transfer switch system of the converter station is solved, thus realizing the stability and reliability of power supply.
Patent Information
- Application Number
- CN202511004129.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-21
- Publication Date
- 2025-11-21
AI Technical Summary
In existing technologies, the three-stage automatic transfer switch system of converter stations may cause problems such as power outage of the entire station or parallel operation of busbars after switching to manual mode. In particular, it cannot automatically switch when the busbars lose power, resulting in unstable power supply.
The automatic transfer switch system control mode is divided into three independent control of the three bus sections 101M, 102M and 103M, which control the incoming line switch and the bus tie switch respectively. The closing condition logic is added to ensure the reliable switching of the bus tie switch and avoid parallel operation of the bus.
It achieves reliable and stable automatic switching in the event of busbar power failure, avoiding a complete power outage and ensuring the continuity of power supply.
Smart Images
Figure CN120999871A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of high-voltage direct current transmission, and more particularly to a control and switching method and device for a three-section backup automatic switching system of a converter station. BACKGROUND
[0002] The three-section backup automatic switching system of the station power system of the converter station is composed of 10kV sections 101M, 102M and 103M busbars, the 101M and 102M busbars are powered by 35kV #1 station transformer and 35kV #2 station transformer in the station respectively, and the 103M busbar is powered by 35kV #3 station transformer as a backup station transformer; the 101M and 103M busbars are connected by bus coupler 013DL, and the 102M and 103M busbars are connected by bus coupler 023DL. In normal operation, the 101M and 102M are working section busbars, and the following are connected with station loads; the 103M busbar is a backup section power supply, and is not connected with loads. As shown in the figure. Figure 6
[0003] In normal operation, the bus couplers 013DL and 023DL are disconnected, and the 11DL, 12DL and 13DL are connected, and the three-section busbars are operated in parallel. The main backup automatic switching mode is as follows: 1. When the 101M or 102M loses power and the 103M voltage is OK, the backup automatic switching system disconnects the 11DL or 12DL switch after a short delay, and connects the 013DL or 023DL switch after a long delay; 2. When the 101M or 102M voltage is restored, the backup automatic switching system disconnects the 013DL or 023DL switch after a short delay, and connects the 11DL or 12DL switch after a long delay; 3. When the 103M loses power and the 101M or 102M voltage is OK, the backup automatic switching system does not act; 4. When the 103M is powered, the backup automatic switching system automatically connects the 13DL switch; 3. In order to ensure that the 103M voltage loses power and the 101M or 102M voltage is OK, the 013DL and 023DL cannot be manually connected to make the 101M or 102M run with the 103M, and in order to prevent the 101M, 102M and 103M three-section busbars from being parallel, the 013DL or 023DL switch is connected to the 11DL or 12DL in the disconnected position.
[0004] If the 35kV #1 station transformer needs to be stopped and the 101M does not lose power, the backup automatic switching system needs to be kept in automatic mode, the high-voltage side breaker of the 35kV #1 station transformer is manually disconnected, the 101M loses power, the backup automatic switching system automatically disconnects the 11DL and connects the 013DL, so that the 101M does not lose power. If the 101M needs to lose power, the backup automatic switching system needs to be converted to manual mode, the 11DL switch is manually disconnected, and the 013DL cannot be automatically connected, so that the 101M loses power.
[0005] However, in the prior art, when the backup power automatic switching system is converted to manual mode and the 101M is de-energized, if the 102M is also de-energized, the 023DL cannot be closed, resulting in power failure of the entire station. And when the 103M voltage is de-energized, the 101M voltage is also de-energized, and the 102M voltage is OK, because there is no switch connection between 101M and 102M, and the 023DL needs to be in the open position, so at this time the backup power automatic switching system can only automatically disconnect the 11DL and automatically close the 013DL, but cannot automatically close the 023DL, resulting in de-energization of the 101M. Similarly, when the 103M voltage is de-energized, the 102M voltage is also de-energized, and the 101M voltage is OK, the 102M will also be de-energized because the 013DL cannot be automatically closed.
[0006] Therefore, a technology is needed to realize control and switching of a three-section backup power automatic switching system of a converter station. SUMMARY
[0007] The technical scheme of the present application provides a control and switching method and device for a three-section backup power automatic switching system of a converter station, to solve the problem of how to control and switch the three-section backup power automatic switching system of the converter station.
[0008] To solve the above problems, the present application provides a control and switching method for a three-section backup power automatic switching system of a converter station, which comprises:
[0009] determining the control mode of the backup power automatic switching system as a three-section bus 101M, 102M and 103M backup power automatic switching system control mode;
[0010] three incoming line switches and two bus tie switches of the three-section bus 101M, 102M and 103M; the three incoming line switches include incoming line switch 11DL, incoming line switch 12DL and incoming line switch 13DL; the two bus tie switches include bus tie switch 013DL and bus tie switch 023DL; the backup power automatic switching control system of the three-section bus 101M, 102M and 103M is distributed according to the distribution rules of the backup power automatic switching system action strategy; the distribution rules are: the backup power automatic switching system of 101M controls the incoming line switch 11DL and the bus tie switch 013DL, the backup power automatic switching system of 102M controls the incoming line switch 12DL and the bus tie switch 023DL, and the backup power automatic switching system of 103M controls the incoming line switch 13DL.
[0011] Preferably, it further comprises that the closing condition of the bus tie switch 013DL includes that the incoming line switch 11DL is in the open position and the incoming line switch 12DL and the incoming line switch 13DL are in the open position at the same time.
[0012] Preferably, it further comprises that the closing condition of the bus tie switch 023DL includes that the incoming line switch 12DL is in the open position and the incoming line switch 11DL and the incoming line switch 13DL are in the open position at the same time.
[0013] Preferably, the configuration unit is further configured to set a closing condition of the bus tie switch 013DL, including that the incoming line switch 11DL is in the open position and the incoming line switch 12DL and the incoming line switch 13DL are in the open position at the same time.
[0014] Based on another aspect of the present application, the present application provides a control and switching device for a three-section backup automatic switching system of a converter station, the device comprising:
[0015] An initial unit configured to determine a backup automatic switching system control mode as a backup automatic switching system control mode of three-section buses 101M, 102M and 103M;
[0016] A configuration unit configured to assign three incoming line switches and two bus tie switches to a backup automatic switching control system of the three-section buses 101M, 102M and 103M according to a distribution rule of a backup automatic switching system action strategy, the three incoming line switches including an incoming line switch 11DL, an incoming line switch 12DL and an incoming line switch 13DL, the two bus tie switches including a bus tie switch 013DL and a bus tie switch 023DL, the distribution rule being that the backup automatic switching system of 101M controls the incoming line switch 11DL and the bus tie switch 013DL, the backup automatic switching system of 102M controls the incoming line switch 12DL and the bus tie switch 023DL, and the backup automatic switching system of 103M controls the incoming line switch 13DL. Preferably, the configuration unit is further configured to set a closing condition of the bus tie switch 013DL, including that the incoming line switch 11DL is in the open position and the incoming line switch 12DL and the incoming line switch 13DL are in the open position at the same time.
[0017] Preferably, the configuration unit is further configured to set a closing condition of the bus tie switch 023DL, including that the incoming line switch 12DL is in the open position and the incoming line switch 11DL and the incoming line switch 13DL are in the open position at the same time.
[0018] Preferably, the configuration unit is further configured to set a closing condition of the bus tie switch 023DL, including that the incoming line switch 12DL is in the open position and the incoming line switch 11DL and the incoming line switch 13DL are in the open position at the same time.
[0019] Based on another aspect of the present application, the present application provides a computer readable storage medium storing a computer program for executing a control and switching method for a three-section backup automatic switching system of a converter station.
[0020] Based on another aspect of the present application, the present application provides an electronic device, comprising a processor and a memory, wherein
[0021] The memory is used for storing the executable instructions of the processor.
[0022] The processor is used for reading the executable instructions from the memory and executing the instructions to realize a three-section type backup automatic switching system control and switching method of a converter station.
[0023] The technical scheme of the present application provides a three-section type backup automatic switching system control and switching method and device of a converter station, wherein the method comprises the following steps: dividing the backup automatic switching system control mode into backup automatic switching system control modes of three-section buses 101M, 102M and 103M; distributing three incoming line switches, including an incoming line switch 11DL, an incoming line switch 12DL and an incoming line switch 13DL, and two bus coupler switches, including a bus coupler switch 013DL and a bus coupler switch 023DL, to the backup automatic switching control system of the three-section buses 101M, 102M and 103M according to the distribution rules of the backup automatic switching system action strategy; the distribution rules are as follows: the incoming line switch 11DL and the bus coupler switch 013DL are controlled by the backup automatic switching system of 101M; the incoming line switch 12DL and the bus coupler switch 023DL are controlled by the backup automatic switching system of 102M; and the incoming line switch 13DL is controlled by the backup automatic switching system of 103M. BRIEF DESCRIPTION OF DRAWINGS
[0024] The exemplary embodiments of the present application can be more completely understood by reference to the following drawings:
[0025] Figure 1 A flow chart of a three-section type backup automatic switching system control and switching method according to the preferred embodiment of the present application;
[0026] Figure 2 A schematic diagram of a backup automatic switching system control mode according to the preferred embodiment of the present application;
[0027] Figure 3 A schematic diagram of a backup automatic switching system control mode according to the preferred embodiment of the present application;
[0028] Figure 4 A schematic diagram of 013DL and 023DL bus coupler switch closing interlocking conditions according to the preferred embodiment of the present application;
[0029] Figure 5 A structure diagram of a three-section type backup automatic switching system control and switching device according to the preferred embodiment of the present application; Figure 6 A schematic diagram of a backup automatic switching operation mode wiring of a converter station according to the prior art. DETAILED DESCRIPTION
[0030] Reference will now be made to the drawings to describe the exemplary embodiments of the present application in greater detail. The present application can be variously embodied and is not limited to the embodiments described herein, which are provided for the purposes of disclosure and to fully and completely disclose the present application to those skilled in the art. The terminology used herein is for the purpose of describing the embodiments and is not intended to limit the present application. In the drawings, the same elements are denoted by the same reference numerals.
[0031] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
[0032] Figure 1 A flow chart of a control and switching method of a three-section backup automatic switching system of a converter station according to a preferred embodiment of the present application.
[0033] In order to solve the problem that when the backup automatic switching system is switched to the manual mode, one working section bus (101M or 102M) loses power, and the backup automatic switching system cannot automatically close the bus tie switch to enable the standby section 103M to run with the working section bus (101M or 102M) that loses power, the present application proposes to decouple the manual and automatic operation modes of the 101M, 102M and 103M three-section buses in the backup automatic switching system, that is, the manual and automatic operation modes of the three-section buses can be freely set, for example, 101M is set to the manual operation mode, and 102M and 103M can still be set to the automatic operation mode, so that the backup automatic switching system can automatically close 023DL to enable 103M to run with 102M.
[0034] In order to solve the problem that when there is no switch directly connected between 101M and 102M, the voltage of 103M loses power, the voltage of 101M also loses power, and the voltage of 102M is normal, the backup automatic switching system can only automatically close 013DL, and cannot automatically close 023DL (because the 12DL switch is in the closed position at this time), resulting in the problem that 102M cannot run with 101M, the closing condition of the 023DL switch is increased to "11DL and 13DL switches are in the open position", and the condition "12DL switch is in the open position" is combined or logically connected, so that 013DL can be automatically closed by the backup automatic switching system. Similarly, the closing condition of the 013DL switch is increased to "12DL and 13DL switches are in the open position", and the condition "11DL switch is in the open position" is combined or logically connected.
[0035] As shown in FIG. 1, Figure 1 The present application provides a control and switching method of a three-section backup automatic switching system of a converter station, the method comprising:
[0036] Step 101: determine the backup power automatic switching system control mode as the backup power automatic switching system control mode of three-section bus 101M, 102M and 103M;
[0037] Step 102: distribute three incoming line switches and two bus tie switches of the three-section bus 101M, 102M and 103M to the backup power automatic switching control system according to the distribution rule of the backup power automatic switching system action strategy; the three incoming line switches include incoming line switch 11DL, incoming line switch 12DL and incoming line switch 13DL; the two bus tie switches include bus tie switch 013DL and bus tie switch 023DL; the distribution rule is that the backup power automatic switching system control of 101M controls incoming line switch 11DL and bus tie switch 013DL, the backup power automatic switching system control of 102M controls incoming line switch 12DL and bus tie switch 023DL, and the backup power automatic switching system control of 103M controls incoming line switch 13DL.
[0038] In the application, 11DL, 12DL and 13DL are backup power automatic switching incoming line switches, and 013DL and 023DL are backup power automatic switching bus tie switches.
[0039] The application divides the backup power automatic switching system control mode into three-section bus backup power automatic switching control modes of 101M, 102M and 103M, and distributes three incoming line switches 11DL, 12DL and 13DL and two bus tie switches 013DL and 023DL to the backup power automatic switching control systems of 101M, 102M and 103M according to the backup power automatic switching system action strategy. The specific distribution rule is as follows: 1) incoming line switch 11DL and bus tie switch 013DL are controlled by the backup power automatic switching system of 101M; 2) incoming line switch 12DL and bus tie switch 023DL are controlled by the backup power automatic switching system of 102M; and 3) incoming line switch 13DL is controlled by the backup power automatic switching system of 103M. Figure 2 、 3 As shown in the figure.
[0040] Preferably, the closing condition of bus tie switch 013DL includes that incoming line switch 11DL is in the split position and incoming line switch 12DL and incoming line switch 13DL are in the split position at the same time.
[0041] Preferably, the closing condition of bus tie switch 023DL includes that incoming line switch 12DL is in the split position and incoming line switch 11DL and incoming line switch 13DL are in the split position at the same time.
[0042] Preferably, the incoming line breakers corresponding to the handcart switches of incoming line switch 11DL, incoming line switch 12DL and incoming line switch 13DL are not in the working position.
[0043] In the application, when the handcart is not in the working position, it means that the corresponding switch is isolated from the system, and the function is equivalent to an isolation knife switch.
[0044] The application increases the closing conditions of 013DL and 023DL bus tie switches. On the basis of the original, the closing condition of 013DL bus tie switch is 11DL section and 12DL and 13DL sections are satisfied at the same time, and the closing condition of 023DL bus tie switch is 12DL section and 11DL and 13DL sections are satisfied at the same time. And the condition that the corresponding handcart switches of 11DL, 12DL and 13DL incoming line breakers are not in the working position is added. In this way, it can be ensured that the three-section bus cannot be operated in parallel and the mutual backup between 102M and 101M when 103M is powered off. The specific logic block is Figure 4 As shown.
[0045] The application realizes the decoupling of the manual and automatic control modes of 101M, 102M and 103M three-section bus for the three-section type backup power supply system of the converter station, and the manual and automatic operation modes of the three-section bus can be freely controlled and set, which avoids the situation that when one section of bus is powered off, the three-section bus is set to the manual mode, and finally the power supply of the whole station is lost due to the power loss of the other section of bus.
[0046] The application adds the closing condition that “11DL and 13DL switches are in the open position” in the closing condition of 013DL switch, and the condition “12DL switch is in the open position” is combined or logically connected, so as to ensure that 013DL can be automatically closed by the backup power supply. Similarly, the closing condition of 013DL is increased by “12DL and 13DL switches are in the open position”, and the condition “11DL switch is in the open position” is combined or logically connected. And the “non-working position of handcart” is added to improve the reliability.
[0047] Figure 5 A control and switching device structure diagram of a three-section type backup power supply system of a converter station according to the preferred embodiment of the application is shown in the figure.
[0048] As Figure 5 shown, the application provides a control and switching device of a three-section type backup power supply system of a converter station, which comprises:
[0049] The initial unit 501 determines the backup power supply system control mode as the backup power supply system control mode of the three-section bus 101M, 102M and 103M.
[0050] The configuration unit 502 is configured to configure three incoming line switches and two bus tie switches of the three-section bus 101M, 102M and 103M, wherein the three incoming line switches include the incoming line switch 11DL, the incoming line switch 12DL and the incoming line switch 13DL, the two bus tie switches include the bus tie switch 013DL and the bus tie switch 023DL, and the backup power automatic switching system control system of the three-section bus 101M, 102M and 103M is distributed according to a distribution rule of an action strategy of the backup power automatic switching system, wherein the distribution rule is that the backup power automatic switching system control of 101M controls the incoming line switch 11DL and the bus tie switch 013DL, the backup power automatic switching system control of 102M controls the incoming line switch 12DL and the bus tie switch 023DL, and the backup power automatic switching system control of 103M controls the incoming line switch 13DL.
[0051] Preferably, the configuration unit 502 is further configured to set a closing condition of the bus tie switch 013DL, and the closing condition includes that the incoming line switch 11DL is in a split position and the incoming line switch 12DL and the incoming line switch 13DL are in split positions at the same time.
[0052] Preferably, the configuration unit 502 is further configured to set a closing condition of the bus tie switch 023DL, and the closing condition includes that the incoming line switch 12DL is in a split position and the incoming line switch 11DL and the incoming line switch 13DL are in split positions at the same time.
[0053] Preferably, the configuration unit 502 is further configured to set that none of the corresponding switch drawers of the incoming line breakers of the incoming line switch 11DL, the incoming line switch 12DL and the incoming line switch 13DL is in a working position.
[0054] The application provides a computer readable storage medium, which stores a computer program for executing a three-section backup power automatic switching system control and switching method of a converter station.
[0055] The application provides an electronic device, characterized in that the electronic device comprises a processor and a memory, wherein
[0056] The memory is configured to store processor-executable instructions.
[0057] The processor is configured to read the executable instructions from the memory and execute the instructions to implement a three-section backup power automatic switching system control and switching method of a converter station.
[0058] Those skilled in the art will appreciate that embodiments of the present application can be readily used as software, hardware, or a combination of software and hardware. In a software embodiment, the methods can be tangibly embodied in a machine-readable storage medium having stored thereon instructions that can be used to program a computer to perform any of the methods. The software implementation can be initialized by loading and executing a set of instructions arranged to perform one of the methods into the computer's memory. Alternatively, hard-wired circuitry can be used in place of, or in combination with, software instructions. Thus, the
[0059] The present application is described in reference to the flowchart illustrations and / or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart illustrations and / or block diagrams. Figure 1 one or more functions specified in one or more of the flowchart illustrations and / or block diagrams. Figure 1 means for performing each of the functions specified in the flowchart illustrations and / or block diagrams.
[0060] These computer program instructions can also be stored in a computer- readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instructions which implement the flowchart illustrations and / or block diagrams. Figure 1 one or more functions specified in one or more of the flowchart illustrations and / or block diagrams. Figure 1 means for performing each of the functions specified in the flowchart illustrations and / or block diagrams.
[0061] These computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the flowchart illustrations and / or block diagrams. Figure 1 one or more functions specified in one or more of the flowchart illustrations and / or block diagrams. Figure 1 means for performing each of the functions specified in the flowchart illustrations and / or block diagrams.
[0062] While preferred embodiments of the application have been described, modifications and variations can be apparent to those skilled in the art once aware of the general underlying concepts. Accordingly, the appended claims are intended to encompass all modifications and variations as falling within the scope of the application.
[0063] Obviously, numerous modifications and variations of the present application are possible in light of the above teachings. It is therefore to be understood that within the scope of the appended claims, and their equivalents, the application can be practiced otherwise than as specifically described.
[0064] The present application has been described in terms of particular embodiments. However, other embodiments apparent to those of ordinary skill in the art to which the present application pertains are intended to be within the scope of the claims that follow. It is therefore intended to cover any and all modifications and variations of this application that fall within the scope of the appended claims.
[0065] Generally, all terms used in the claims are to be interpreted according to their ordinary meaning in the technical field, unless explicitly defined otherwise herein. All references to "a / an / the [device, component, etc.] are to be interpreted openly as referring to at least one instance of the referenced device, component, etc., unless otherwise indicated. The steps of any methods disclosed herein do not have to be performed in the exact order disclosed, unless explicitly stated.
Claims
1. A control and switching method for a three-section backup automatic switching system of a converter station, characterized in that, The method comprises: The control mode of the backup power supply system is determined as the control mode of the backup power supply system of three section buses 101M, 102M and 103M. Three incoming line switches and two bus tie switches of the three section buses 101M, 102M and 103M are assigned to the backup power supply control system of the three section buses 101M, 102M and 103M according to the distribution rule of the backup power supply system action strategy; the distribution rule is that the backup power supply system of 101M controls the incoming line switch 11DL and the bus tie switch 013DL, the backup power supply system of 102M controls the incoming line switch 12DL and the bus tie switch 023DL, and the backup power supply system of 103M controls the incoming line switch 13DL.
2. The method of claim 1, wherein, Further comprising: The closing condition of the bus tie switch 013DL comprises that the incoming line switch 11DL is in the split position and the incoming line switch 12DL and the incoming line switch 13DL are in the split position at the same time.
3. The method of claim 1, wherein, Further comprising: The closing condition of the bus tie switch 023DL comprises that the incoming line switch 12DL is in the split position and the incoming line switch 11DL and the incoming line switch 13DL are in the split position at the same time.
4. The method of claim 1, wherein, Further comprising: The incoming line breakers corresponding to the three incoming line switches 11DL, 12DL and 13DL are not in the working position.
5. A control and switching device for a three-section backup automatic throw-in system of a converter station, characterized in that, The device comprises: An initial unit: the control mode of the backup power supply system is determined as the control mode of the backup power supply system of three section buses 101M, 102M and 103M. A configuration unit is configured to assign three incoming line switches and two bus tie switches of the three section buses 101M, 102M and 103M to the backup power supply control system of the three section buses 101M, 102M and 103M according to the distribution rule of the backup power supply system action strategy; the distribution rule is that the backup power supply system of 101M controls the incoming line switch 11DL and the bus tie switch 013DL, the backup power supply system of 102M controls the incoming line switch 12DL and the bus tie switch 023DL, and the backup power supply system of 103M controls the incoming line switch 13DL.
6. The apparatus of claim 5, wherein, The configuration unit is further configured to set the closing condition of the bus tie switch 013DL, which comprises that the incoming line switch 11DL is in the split position and the incoming line switch 12DL and the incoming line switch 13DL are in the split position at the same time.
7. The apparatus of claim 5, wherein, The configuration unit is further configured to set the closing condition of the bus tie switch 023DL, which comprises that the incoming line switch 12DL is in the split position and the incoming line switch 11DL and the incoming line switch 13DL are in the split position at the same time.
8. The apparatus of claim 5, wherein, The configuration unit is further configured to set the incoming line breakers of the incoming line switch 11DL, the incoming line switch 12DL and the incoming line switch 13DL to be not in the working position.
9. A computer-readable storage medium, characterized in that, The computer readable storage medium stores a computer program for executing the method of any one of claims 1-4.
10. An electronic device, comprising: The electronic device comprises a processor and a memory; wherein, The memory is configured to store the executable instructions of the processor. The processor is configured to read the executable instructions from the memory and execute the instructions to implement the method of any one of claims 1-4.