Spare power automatic switching device management method and management system

Abstract

The invention relates to a spare power automatic switching device management method, which comprises the following steps: acquiring and analyzing plant station equipment data including transformer data, bus data, spare power automatic switching device data, circuit breaker data and connection point number data, judging whether a spare power automatic switching device needs to be stopped or not according to the transformer data, the circuit breaker data and a preset stopping condition, and if yes, judging whether the spare power automatic switching device needs to be stopped or not; and when the stop condition is met, sending out a stop early warning of the spare power automatic switching device, and when the stop condition is not met, sending out a recovery early warning of the spare power automatic switching device. Early warning can be performed on the on-off linkage analysis of the main transformer load and the spare power automatic switching device of the transformer substation, the operation condition of the main transformer load of the transformer substation is analyzed in real time, when the total load of the main transformer exceeds a certain limit, the spare power automatic switching device is stopped and early warning is performed in time, and when the load of the main transformer returns to the normal condition, the spare power automatic switching device is recovered and prompted in time. And scheduling personnel take corresponding measures to avoid serious power grid accidents.

Description

Technical Field

[0001] The present invention relates to the technical field of power system automation, and in particular to a management method and management system for a backup automatic switching device. Background Art

[0002] At present, the smart grid dispatching and control system of the power supply company has been connected to multiple substations equipped with low-voltage side standby automatic switching devices. It has the ability to quickly and automatically switch the power-off load to the normal main transformer through the standby automatic switching device when a main transformer in the substation fails. At the same time, the power grid dispatching and control system has a comprehensive intelligent alarm function, which can alarm when the main transformer load exceeds the limit. However, during the peak load period in the summer, the smart grid dispatching and control system does not have the ability to automatically determine whether the load switching will cause the normal main transformer to be overloaded based on the capacity of the main transformer of the substation and the load distribution. This is not conducive to the safe operation of the power grid during the peak summer period. The present invention mainly uses program monitoring and early warning of the operation overload problem of the low-voltage side standby automatic switching device of the substation to ensure the safe operation of the power grid.

[0003] With the popularization of smart grid dispatching and control systems, the backup automatic switching device can quickly switch the load to the normal main transformer when a substation fails, but there are the following problems in high-load scenarios: 1. Insufficient management of standby equipment: lack of unified monitoring and display, and inability to control equipment status in real time; 2. Primary equipment identification risk: Missing or wrong equipment identification may lead to misoperation; 3. Lack of main transformer load monitoring: It is impossible to comprehensively monitor the main transformer load and branch switch status, making it difficult to predict the overload risk after the standby automatic switching; 4. Insufficient load forecasting methods: Lack of analysis of the main transformer load after switching based on the power grid topology, and inability to timely warn of shutdown of standby and automatic switching; 5. Lack of recovery reminder: When the total load is restored, there is no automatic reminder to re-enable the standby automatic transfer; 6. Soft pressure plate monitoring blind area: the status of the standby automatic soft pressure plate is not scanned and recorded; 7. Missing historical data: It is impossible to query the historical start and end records of the standby automatic investment, which affects fault analysis. Summary of the invention

[0004] The present invention provides a management method and management system for a standby automatic start-up device to solve at least one technical problem mentioned in the background technology.

[0005] A technical solution of the present invention is as follows: A method for managing a standby automatic switching device, comprising: S10: Acquire and parse plant equipment data, wherein the plant equipment data includes transformer data, busbar data, backup automatic switching device data, circuit breaker data, and connection point number data; S20: Establish mapping relationships between all main transformer circuit breakers, load circuit breakers, standby automatic circuit breakers and busbars on the low-voltage side of the transformer according to the connection point number data; S30: judging whether the standby automatic switching device needs to be disabled according to the transformer data, the circuit breaker data and the preset disablement conditions, and issuing a disablement warning of the standby automatic switching device when the disablement conditions are met; S40: Continuously monitor all disabled automatic start-up devices, and issue a warning for the automatic start-up device to resume when the deactivation conditions are not met.

[0006] Further, the S20 includes: According to the connection point number data, determine the two busbars connected to the standby automatic circuit breaker corresponding to the standby automatic circuit breaker device; Recursive matching of the circuit breaker relationship of the two busbars is performed to determine all load circuit breakers and main transformer circuit breakers connected to the two busbars.

[0007] Furthermore, the circuit breaker relationship matching of the two busbars to determine all load circuit breakers and main transformer circuit breakers connected to the two busbars includes: According to the contact number data, the load circuit breakers connected to all load devices and the busbars connected to the load circuit breakers are determined by recursive matching; According to the contact number data, the main transformer circuit breaker connected to the low-voltage side of the transformer and the busbar connected to the main transformer circuit breaker are determined by recursive matching.

[0008] Further, the determining, according to the connection point number data, the two busbars connected to the standby automatic switching circuit breaker corresponding to the standby automatic switching device comprises: According to the contact number data, the switch device connected to the standby automatic circuit breaker and the busbar connected to the switch device are determined by recursive matching.

[0009] Further, the S30 includes: Determine the total transformer power according to the transformer data, and determine the total load power according to all load circuit breakers and circuit breaker data; When the total power of the transformer and the sum of the load power meet the deactivation conditions, a deactivation warning of the standby automatic transfer device is issued.

[0010] Furthermore, the deactivation condition includes: when the total load power is greater than a preset multiple of the total transformer power.

[0011] Furthermore, it also includes: scanning the data of the standby automatic start-up device and highlighting all the standby automatic start-up devices that are missing listing data.

[0012] Another technical solution of the present invention is as follows: A management system for a standby automatic start-up device, characterized in that any of the above-mentioned standby automatic start-up device management methods is used, including: Data analysis module, used to obtain and analyze plant equipment data; The recursive matching module is used to establish the mapping relationship between all the main transformer circuit breakers, load circuit breakers, standby automatic circuit breakers and busbars on the low-voltage side of the transformer according to the connection point number data; The early warning calculation module determines whether the standby automatic start-up device needs to be disabled based on the transformer data, circuit breaker data and preset deactivation conditions. When the deactivation conditions are met, a standby automatic start-up device deactivation early warning is issued. All disabled standby automatic start-up devices are continuously monitored. When the deactivation conditions are not met, a standby automatic start-up device recovery early warning is issued.

[0013] Furthermore, it also includes: The human-computer interaction module is used to provide data modification, equipment maintenance, status monitoring and history query function interfaces.

[0014] Furthermore, it also includes: The sign scanning module is used to scan the data of the standby automatic start-up device and highlight all the standby automatic start-up devices that are missing the sign data.

[0015] The beneficial effects of the present invention are as follows: the present invention can provide early warning for the linkage analysis of the load of the main transformer of the substation and the standby automatic start-up and stop-down, and analyze the load operation status of the main transformer of the substation in real time. When the total load of the main transformer exceeds a certain limit, the standby automatic start-up is disabled and a warning is given in time. When the load of the main transformer returns to normal, the standby automatic start-up is restored and a reminder is given in time. The dispatching personnel take corresponding measures to avoid serious power grid accidents and safeguard the safe operation of the power grid. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a flow chart of the present invention. DETAILED DESCRIPTION

[0017] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. The described embodiment is only a part of the embodiment of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of the present invention.

[0018] In one technical solution of the present invention, Figure 1 is a flowchart provided according to the specific steps of a method for managing a backup automatic device according to the present invention, such as Figure 1 As shown, this technical solution includes: S10: Acquire and parse plant equipment data, wherein the plant equipment data includes transformer data, busbar data, backup automatic switching device data, circuit breaker data, and connection point number data.

[0019] Read the data transmitted by the protection signal equipment under the plant station, and parse to obtain the plant station equipment data. Among them, the protection signal equipment is the signal transmission equipment. The specific data can be obtained from the D5000 system, and the connection point number data of each device is obtained by parsing.

[0020] Specifically: read the protection signal equipment information of the plant station, parse and obtain the busbar equipment information, transformer winding equipment data information, knife switch equipment information, and circuit breaker equipment information. Taking transformer data as an example, it can include transformer operating status data, capacity data, power data, etc. Other data are the operating data and basic parameter data of each device, so they will not be repeated here.

[0021] S20: According to the connection point number data, a mapping relationship between all main transformer circuit breakers, load circuit breakers, standby automatic circuit breakers and busbars on the low-voltage side of the transformer is established.

[0022] According to the connection point number data, the two busbars connected to the standby automatic switching circuit breaker corresponding to the standby automatic switching device are determined.

[0023] Recursive matching of the circuit breaker relationship of the two busbars is performed to determine all load circuit breakers and main transformer circuit breakers connected to the two busbars.

[0024] Specifically, according to the contact number data, the load circuit breakers connected to all load devices and the busbars connected to the load circuit breakers are determined by recursive matching; According to the contact number data, the main transformer circuit breaker connected to the low-voltage side of the transformer and the busbar connected to the main transformer circuit breaker are determined by recursive matching.

[0025] According to the contact number data, the switch device connected to the standby automatic circuit breaker and the busbar connected to the switch device are determined by recursive matching.

[0026] Analyze and obtain the point number relationship of the circuit breaker and knife switch equipment under the plant station, determine the connection status of the standby automatic device with the circuit breaker and knife switch according to the matching relationship, determine the busbar connected to the standby automatic device according to the connection point number, and establish the connection relationship between the standby automatic device and the busbar equipment under the plant station. In principle, the standby automatic circuit breaker corresponding to the standby automatic device is only separated from the busbar by the trolley knife switch, so recursively judge the connection status of the trolley knife switch and the standby automatic circuit breaker switch, and establish the two busbars connected to the standby automatic device.

[0027] Parse and read all device information on the low-voltage side of the transformer, and obtain the device information, power information, and connection point number data of all devices.

[0028] Parse the connection point number data of all devices on the low-voltage side of the transformer, perform recursive matching, and obtain the connection status of all devices on the low-voltage side and the load circuit breakers and switch devices, so as to determine the connection status of each device and the busbar, and establish the busbar corresponding to all load circuit breakers on the low-voltage side of the transformer under the plant station.

[0029] S30: judging whether the standby automatic start-up device needs to be disabled according to the transformer data, circuit breaker data and preset disablement conditions, and issuing a disablement warning of the standby automatic start-up device when the disablement conditions are met.

[0030] Determine the total transformer power according to the transformer data, and determine the total load power according to all load circuit breakers and circuit breaker data; When the total power of the transformer and the sum of the load power meet the deactivation conditions, a deactivation warning of the standby automatic transfer device is issued.

[0031] The deactivation condition includes: when the total load power is greater than a preset multiple of the total transformer power.

[0032] Through the timed task, the status of the standby automatic change-over equipment is traversed in a loop, and the status of the standby automatic change-over equipment under the plant station is judged in a timed loop, and the deactivation warning of the standby automatic change-over equipment is determined and given. Specifically: according to the bus corresponding to the standby automatic change-over equipment and all the load switches corresponding to the bus, the total load power of all the load switches corresponding to the standby automatic change-over is calculated, the total load power and the total power of the transformer are determined, and a deactivation warning is given.

[0033] S40: Continuously monitor all disabled automatic start-up devices, and issue a warning for the automatic start-up device to resume when the deactivation conditions are not met.

[0034] The status of the backup automatic start-up equipment is traversed in a loop through the scheduled tasks. By querying the deactivation warning in the records, the backup automatic start-up equipment is regularly monitored after the deactivation operation. When the total load power at both ends of the backup automatic start-up equipment is lower than the deactivation condition during a continuous time period (30 minutes), the interface generates a recovery warning message and prompts the generation of a recovery warning based on the plant station and the name of the backup automatic start-up equipment.

[0035] In one implementation of the technical solution, it also includes: scanning the data of the standby automatic start-up device and highlighting all the standby automatic start-up devices that are missing listing data.

[0036] Monitor the signboard information table listing status in real time, analyze whether all the standby automatic switching equipment of the maintained substation is listed, and statistically display the list of listed and unlisted circuit breakers in each plant and station.

[0037] In another technical solution of the present invention, a management system for a standby automatic start-up device is provided, using any of the above-mentioned standby automatic start-up device management methods, including: Data analysis module, used to obtain and analyze plant equipment data; The recursive matching module is used to establish the mapping relationship between all the main transformer circuit breakers, load circuit breakers, standby automatic circuit breakers and busbars on the low-voltage side of the transformer according to the connection point number data; The early warning calculation module determines whether the standby automatic start-up device needs to be disabled based on the transformer data, circuit breaker data and preset deactivation conditions. When the deactivation conditions are met, a standby automatic start-up device deactivation early warning is issued. All disabled standby automatic start-up devices are continuously monitored. When the deactivation conditions are not met, a standby automatic start-up device recovery early warning is issued.

[0038] The sign scanning module is used to scan the data of the standby automatic start-up device and highlight all the standby automatic start-up devices that are missing the sign data.

[0039] The human-computer interaction module is used to provide data modification, equipment maintenance, status monitoring and historical query function interfaces, among which the historical query function includes generating relationship curve graphs.

[0040] This system obtains plant table and circuit breaker table data by calling the system interface, and displays the information of all plant and station backup automatic switching equipment and all circuit breakers through the obtained data. After the information is displayed on the interface, it can support deletion and modification of the maintenance equipment list, and display the circuit breaker equipment information in a list.

[0041] This system can monitor the status of the standby automatic changeover circuit breaker in real time, automatically draw a display interface, display the maintained standby automatic changeover circuit breaker and the corresponding standby automatic changeover equipment on one page, obtain the status of the standby automatic changeover circuit breaker and the operating status of the standby automatic changeover equipment in real time, and display them on the interface. When the operating status of the standby automatic changeover circuit breaker or the standby automatic changeover equipment changes, it will be displayed flashingly.

[0042] The system can monitor the operation of main transformers in real time, automatically obtain and maintain power plants with standby automatic switching, automatically draw 110kV and 35kV main transformers on one page for display, periodically obtain the capacity and load data of main transformers, calculate the total capacity of main transformers and the total load of main transformers in power plants, and display them in real time on the page.

[0043] This system periodically obtains and maintains the load power of all main transformers and circuit breakers under shutdown conditions, and identifies and synthesizes the shutdown alarm information of the standby automatic transfer according to the shutdown conditions of the plant or station, whether it is a single standby automatic transfer or a double standby automatic transfer.

[0044] This system can run on multiple workstation computer devices. When the standby automatic start-up shutdown alarm message appears, a pop-up window will be displayed on the workstation computer device to complete the standby automatic start-up shutdown warning.

[0045] This system can set up a workstation for feedback on the shutdown of the standby automatic start-up unit. After completing the warning of the shutdown of the standby automatic start-up unit, it can monitor the operation of the standby automatic start-up unit of the plant in real time. When the standby automatic start-up unit is shut down, this information will be notified in a pop-up window on the feedback workstation.

[0046] This system can obtain the plants and stations where the automatic start-up equipment is out of service, identify the disabled automatic start-up equipment according to the automatic start-up equipment recovery logic, and synthesize the automatic start-up equipment recovery alarm information. When the automatic start-up equipment recovery alarm information appears, a pop-up window will be displayed on the workstation to complete the automatic start-up equipment start-up warning; This system can set up a feedback workstation for the activation of the standby automatic start-up. After completing the warning for the activation of the standby automatic start-up, it can monitor the operation of the standby automatic start-up of the plant in real time. When the standby automatic start-up is activated, the information will be notified in a pop-up window on the feedback workstation.

[0047] This system can provide historical switching records and alarm query functions for standby automatic start-up, count the time trend of the deactivation and activation status of each standby automatic start-up, count the number of activations and deactivations of each standby automatic start-up within a specified time and sort them, and count the deactivation time of each standby automatic start-up within a specified time.

[0048] This system can obtain the status of the standby automatic start-up equipment configured in the system in real time, display the real-time status of the standby automatic start-up equipment of each plant and station, count the real-time input and output quantity and output duration of the standby automatic start-up equipment of each plant and station, and count the change trend of the input and output quantity of the standby automatic start-up equipment of each plant and station over time.

[0049] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to examples, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A method for managing a standby automatic start-up device, characterized in that: include: S10: Acquire and parse plant equipment data, wherein the plant equipment data includes transformer data, busbar data, backup automatic switching device data, circuit breaker data, and connection point number data; S20: Establish mapping relationships between all main transformer circuit breakers, load circuit breakers, standby automatic circuit breakers and busbars on the low-voltage side of the transformer according to the connection point number data; S30: judging whether the standby automatic switching device needs to be disabled according to the transformer data, the circuit breaker data and the preset disablement conditions, and issuing a disablement warning of the standby automatic switching device when the disablement conditions are met; S40: Continuously monitor all disabled automatic start-up devices, and issue a warning for the automatic start-up device to resume when the deactivation conditions are not met.

2. The method for managing a standby automatic start-up device according to claim 1, characterized in that: The S20 includes: According to the connection point number data, determine the two busbars connected to the standby automatic circuit breaker corresponding to the standby automatic circuit breaker device; Recursive matching of the circuit breaker relationship of the two busbars is performed to determine all load circuit breakers and main transformer circuit breakers connected to the two busbars.

3. The method for managing a standby automatic start-up device according to claim 2, characterized in that: The circuit breaker relationship matching of the two busbars to determine all load circuit breakers and main transformer circuit breakers connected to the two busbars includes: According to the contact number data, the load circuit breakers connected to all load devices and the busbars connected to the load circuit breakers are determined by recursive matching; According to the contact number data, the main transformer circuit breaker connected to the low-voltage side of the transformer and the busbar connected to the main transformer circuit breaker are determined by recursive matching.

4. The method for managing a standby automatic start-up device according to claim 2, characterized in that: The step of determining, according to the connection point number data, two busbars connected to the standby automatic switching circuit breaker corresponding to the standby automatic switching device comprises: According to the contact number data, the switch device connected to the standby automatic circuit breaker and the busbar connected to the switch device are determined by recursive matching.

5. The method for managing a standby automatic start-up device according to claim 2, characterized in that: The S30 includes: Determine the total transformer power according to the transformer data, and determine the total load power according to all load circuit breakers and circuit breaker data; When the total power of the transformer and the sum of the load power meet the deactivation conditions, a deactivation warning of the standby automatic transfer device is issued.

6. The method for managing a standby automatic start-up device according to claim 1, characterized in that: The deactivation condition includes: when the total load power is greater than a preset multiple of the total transformer power.

7. The method for managing a standby automatic start-up device according to claim 1, characterized in that: Also includes: The data of the standby automatic start-up device is scanned, and all the standby automatic start-up devices with missing listing data are highlighted.

8. A management system for a standby automatic device, characterized in that: The method for managing a standby automatic start-up device according to any one of claims 1 to 7 comprises: Data analysis module, used to obtain and analyze plant equipment data; The recursive matching module is used to establish the mapping relationship between all the main transformer circuit breakers, load circuit breakers, standby automatic circuit breakers and busbars on the low-voltage side of the transformer according to the connection point number data; The early warning calculation module determines whether the standby automatic start-up device needs to be disabled based on the transformer data, circuit breaker data and preset deactivation conditions. When the deactivation conditions are met, a standby automatic start-up device deactivation early warning is issued. All disabled standby automatic start-up devices are continuously monitored. When the deactivation conditions are not met, a standby automatic start-up device recovery early warning is issued.

9. The automatic standby device management system according to claim 8, characterized in that: Also includes: The human-computer interaction module is used to provide data modification, equipment maintenance, status monitoring and historical query function interfaces, among which the historical query function includes generating relationship curve graphs.

10. The automatic standby device management system according to claim 8, characterized in that: Also includes: The sign scanning module is used to scan the data of the standby automatic start-up device and highlight all the standby automatic start-up devices that are missing the sign data.

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