Power system risk early warning method, device, storage medium and computer equipment

Abstract

The present application discloses a risk warning method, device, storage medium and computer equipment for a power system, and relates to the field of power technology. The method includes: in response to a detection instruction, parsing the detection instruction to obtain the rating accuracy level of the target substation; constructing a grid topology map based on the preset number associated with the rating accuracy level, the incoming line information of the target substation and the remote signal location data in the target area where the target substation is located; determining the operating state of the double-circuit power supply line based on the grid topology map; if the operating state belongs to a preset abnormal state, outputting warning information based on the operating state. The method of the present application not only realizes the real-time monitoring and reminder function of the operating risk of the target substation, and assists the dispatching personnel to quickly deal with the operating risk of the power system, but also makes the abnormal detection of the double-circuit power supply line of the target substation more in line with actual needs and avoids waste of resources.

Description

Technical Field

[0001] The present application relates to the field of electric power technology, and in particular to a risk early warning method, device, storage medium and computer equipment for an electric power system. Background Art

[0002] Substations are equipped with dual-circuit power supplies, which come from different upstream substations during normal operation, improving their power supply reliability. However, due to routine maintenance of the power grid, accident tripping, and other situations, substations may face operational risks such as single-circuit power supply, risk of dual-circuit power supply from the same source, and reduced reliability of upstream power supply. Therefore, power grid dispatchers need to pay real-time attention to power operation risks during daily maintenance and accident handling, and take timely measures.

[0003] With the development of society, the scale and structure of power grids are gradually expanding. The traditional method of relying on manual identification to judge the risks of power operation is inefficient, unreliable, and wastes a lot of human resources, which will affect the stability of power grid operation. Summary of the invention

[0004] In view of this, the present application provides a risk warning method, device, storage medium and computer equipment for an electric power system, which can accurately identify and prompt risk problems existing in the dual-circuit power supply line of a target substation.

[0005] According to one aspect of the present application, a risk early warning method for a power system is provided, comprising:

[0006] In response to the detection instruction, parsing the detection instruction to obtain the rating accuracy level of the target substation;

[0007] A grid topology diagram is constructed according to the preset number associated with the rating accuracy level, the incoming line information of the target substation and the remote signaling location data within the target area where the target substation is located, wherein the grid topology diagram includes a double-circuit power supply line of the target substation, and any power supply line of the double-circuit power supply line is connected to an upstream substation less than or equal to the preset number;

[0008] Determining the operating state of the double-circuit power supply line according to the grid topology diagram;

[0009] If the operating state belongs to a preset abnormal state, outputting warning information according to the operating state;

[0010] The preset abnormal state includes a single power supply state, a same-source power supply state and / or an upper-level power supply dangerous state.

[0011] Optionally, determining the operating state of the double-circuit power supply line according to the grid topology diagram includes:

[0012] Acquiring power information of the double-circuit power supply line according to the grid topology diagram, wherein the power information includes line current and / or line voltage;

[0013] If the line voltage of any power supply line is less than or equal to a preset voltage, or the line current of any power supply line is less than or equal to a preset current, it is determined that the double-circuit power supply line is in the single power supply state;

[0014] If the line voltage of any power supply line is greater than a preset voltage, and the line current of any power supply line is greater than a preset current, it is determined that the double-circuit power supply line is in a normal operating state.

[0015] Optionally, determining the operating state of the double-circuit power supply line according to the grid topology diagram includes:

[0016] Comparing the switch type information and the switch identification information of the upstream substation on the double-circuit power supply line in the grid topology diagram, wherein the switch identification information includes a location identification and / or a device identification;

[0017] If the switch type information and the switch identification information of the upstream substation located on different power supply lines are the same, it is determined that the double-circuit power supply line is in the same-source power supply state;

[0018] If the switch type information or the switch identification information of the upstream substations located on different power supply lines is different, it is determined that the double-circuit power supply line is in normal operation.

[0019] Optionally, determining the operating state of the double-circuit power supply line according to the grid topology diagram includes:

[0020] Determining an upstream substation adjacent to the target substation as a superior power source according to the grid topology diagram;

[0021] If the equipment layout information or wiring layout information of the upper power supply meets the preset dangerous condition, it is determined that the double-circuit power supply line is in the dangerous state of the upper power supply;

[0022] If the equipment layout information and wiring layout information of the upper power supply do not meet the preset danger conditions, it is determined that the double-circuit power supply line is in normal operation.

[0023] Optionally, the risk early warning method for the power system further includes:

[0024] If the number of main transformers of the upper power supply is less than or equal to a first preset number, determining that the equipment layout information meets the preset danger condition;

[0025] If the number of the busbars of the upper power supply is less than or equal to a second preset number, determining that the wiring layout information meets the preset danger condition;

[0026] If the number of power input lines of the upper power supply is less than or equal to a third preset number, it is determined that the wiring layout information meets the preset danger condition.

[0027] Optionally, outputting warning information according to the operating status includes:

[0028] Inputting the operating status into a deep learning model to obtain a risk level matching the operating status;

[0029] Determine the treatment measures corresponding to the risk level and the operating status;

[0030] Combining the treatment measures and the operating status to obtain the warning information;

[0031] The early warning information is sent to a dispatching node of the target substation, so that the dispatching node displays the disposal measures and the operating status in association.

[0032] Optionally, the risk early warning method for the power system further includes:

[0033] In response to a confirmation instruction of the treatment measure, a treatment operation in the treatment measure is executed.

[0034] According to another aspect of the present application, there is provided a risk warning device for a power system, comprising:

[0035] An acquisition module, configured to respond to a detection instruction and parse the detection instruction to acquire a rating accuracy level of a target substation;

[0036] A construction module, used to construct a grid topology map according to the preset number associated with the rating accuracy level, the incoming line information of the target substation and the remote signal location data in the target area where the target substation is located, wherein the grid topology map includes a double-circuit power supply line of the target substation, and any power supply line of the double-circuit power supply line is connected to less than or equal to the preset number of upstream substations;

[0037] A state analysis module, used to determine the operating state of the double-circuit power supply line according to the grid topology diagram;

[0038] An early warning module, configured to output early warning information according to the operating state if the operating state belongs to a preset abnormal state;

[0039] The preset abnormal state includes a single power supply state, a same-source power supply state and / or an upper-level power supply dangerous state.

[0040] Optionally, the status analysis module is specifically used to obtain power information of the double-circuit power supply line based on the grid topology diagram, wherein the power information includes line current and / or line voltage; if the line voltage of any of the power supply lines is less than or equal to a preset voltage, or the line current of any of the power supply lines is less than or equal to a preset current, it is determined that the double-circuit power supply line is in the single power supply state; if the line voltage of any of the power supply lines is greater than the preset voltage, and the line current of any of the power supply lines is greater than the preset current, it is determined that the double-circuit power supply line is in a normal operating state.

[0041] Optionally, the status analysis module is specifically used to compare the switch type information and the switch identification information of the upstream substation on the double-circuit power supply line in the grid topology diagram, wherein the switch identification information includes a location identification and / or a device identification; if the switch type information and the switch identification information of the upstream substation located on different power supply lines are the same, it is determined that the double-circuit power supply line is in the same-source power supply state; if the switch type information or the switch identification information of the upstream substation located on different power supply lines are different, it is determined that the double-circuit power supply line is in normal operating state.

[0042] Optionally, the status analysis module is specifically used to determine the upstream substation adjacent to the target substation as the upper-level power supply based on the grid topology diagram; if the equipment layout information or the wiring layout information of the upper-level power supply meets the preset danger condition, determine that the double-circuit power supply line is in the upper-level power supply danger state; if the equipment layout information and the wiring layout information of the upper-level power supply do not meet the preset danger condition, determine that the double-circuit power supply line is in normal operating state.

[0043] Optionally, the status analysis module is specifically used to determine that the equipment layout information meets the preset danger condition if the number of main transformers of the upstream power supply is less than or equal to a first preset number; determine that the wiring layout information meets the preset danger condition if the number of bus bars of the upstream power supply is less than or equal to a second preset number; and determine that the wiring layout information meets the preset danger condition if the number of power input lines of the upstream power supply is less than or equal to a third preset number.

[0044] Optionally, the early warning module includes:

[0045] A matching module, configured to input the operating state into a deep learning model to obtain a risk level that matches the operating state; and determine a disposal measure corresponding to the risk level and the operating state;

[0046] An information generation module, used for combining the treatment measures and the operation status to obtain the warning information;

[0047] The communication module is used to send the warning information to the dispatching node of the target substation, so that the dispatching node can associate and display the disposal measures and the operating status.

[0048] Optionally, the risk warning device of the power system further includes:

[0049] The control module is used to execute the treatment operation in the treatment measure in response to the confirmation instruction of the treatment measure.

[0050] According to another aspect of the present application, a readable storage medium is provided, on which a program or instruction is stored, and when the program or instruction is executed by a processor, the steps of the risk warning method for the above-mentioned power system are implemented.

[0051] According to another aspect of the present application, a computer device is provided, including a storage medium, a processor, and a computer program stored on the storage medium and executable on the processor, and the processor implements the steps of the above-mentioned risk warning method for the power system when executing the program.

[0052] By means of the above technical scheme, the grid topology is constructed according to the preset number associated with the rating accuracy level, the incoming line information of the target substation and the remote signal location data in the target area where the target substation is located. The grid topology diagram is used to obtain the current, voltage, upstream substation location, equipment / switch attributes and other information of the double-circuit power supply line connected to the target substation, and analyze the operating status of the double-circuit power supply line. When there is an abnormality in the operating status of the double-circuit power supply line, an early warning message is output to promptly remind the dispatcher of the risks of the power grid. On the one hand, the real-time monitoring and reminder function of the operating risk of the target substation is realized, and the dispatcher is assisted to quickly deal with the operating risk, which greatly improves the power supply reliability and is extremely practical. On the other hand, the rating accuracy level set by the user is used to automatically match the detection quantity of the upstream substation, so that the abnormal detection of the double-circuit power supply line of the target substation is more in line with actual needs and avoids waste of resources.

[0053] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0055] Figure 1A schematic diagram of a process flow of a risk warning method for a power system provided in an embodiment of the present application is shown;

[0056] Figure 2 A structural block diagram of a risk warning device for a power system provided in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0057] The present application will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0058] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be interpreted as limiting the present application.

[0059] Those skilled in the art will appreciate that, unless expressly stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present application refers to the presence of the features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof. It should be understood that when we refer to an element as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, or there may be intermediate elements. In addition, the "connection" or "connection" used herein may include wireless connection or wireless fusion. The term "and / or" used herein includes all or any unit and all combinations of one or more associated listed items.

[0060] Now, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in a variety of different forms and should not be interpreted as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided to make the disclosure of the present application thorough and complete, and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art.

[0061] In this embodiment, a risk early warning method for a power system is provided. Figure 1 As shown, the method includes:

[0062] Step 101, in response to a detection instruction, parsing the detection instruction to obtain a rating accuracy level of a target substation.

[0063] In actual application scenarios, the power system includes structures such as power plants, substations, transmission lines and distribution lines. The power plant transmits electric energy to at least one substation through the transmission line. Through the step-by-step power conversion of multiple substations in the power system, the high-voltage electric energy output by the power plant is gradually converted into low-voltage electric energy suitable for users. The target substation can be a substation located at the end of the power transmission in the power system that provides electric energy to the user, or it can be an intermediate substation in the power system that is only used to convert electric energy. Specifically, the voltage level of the target substation ranges from 10kV to 220kV, for example, 35kV, 110kV, etc. The target substation or the upstream substation is equipped with structures such as transformers, switchgear, capacitor banks, etc. connected to the transmission line. The voltage transmitted by the high-voltage transmission line is reduced to a voltage suitable for supplying power to users through the transformer. The equipment of the power system, such as circuit breakers, disconnectors, etc., is controlled and protected by the transformer. The capacitor bank is used to improve the power factor of the substation and stabilize the system voltage.

[0064] It is understandable that the target substation can be used to supply power to different users, for example, a coal mine substation supplies power to a mine, an urban substation supplies power to urban residents and industrial facilities, and a railway substation supplies power to a railway system.

[0065] The risk warning method for the power system provided in the embodiment of the present application can be applied to the terminal, can also be applied to the server, and can also be software running in the terminal or the server. In some embodiments, the terminal can be a smart phone, a tablet computer, a laptop computer, a desktop computer, etc.; the server side can be configured as an independent physical server, or a server cluster or distributed system composed of multiple physical servers, and can also be configured as a cloud server that provides basic cloud computing services such as cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communications, middleware services, domain name services, security services, CDN, and big data and artificial intelligence platforms; the software can be an application that implements the risk warning method for the power system, etc., but is not limited to the above forms.

[0066] Step 102, constructing a grid topology map according to the preset number associated with the rating accuracy level, the incoming line information of the target substation and the remote signal location data within the target area where the target substation is located.

[0067] Among them, the correspondence between the rating accuracy level and the preset number can be reasonably set according to experience and evaluation requirements. The incoming line information includes real-time line branches, switch data, line upper and lower relationships and other grid path related information. Telesignaling location data refers to the location information about the grid equipment or grid system obtained through remote communication technology, including the switch status, alarm status, fault status and other information of the equipment. The grid topology diagram is used to intuitively reflect the connection relationship and power transmission path between various devices in the grid. The grid topology diagram includes the double-circuit power supply line of the target substation. Any power supply line in the double-circuit power supply line is connected to less than or equal to the preset number of upstream substations. The preset number can be reasonably set according to the risk analysis accuracy. For example, if the preset number is set to 2, the target substation is used as the origin to trace back to the upper substation of two voltage levels. Even if the actual upper substation of the target substation exceeds 2, the target substation and the first two upper substations constitute a power supply line. If the preset number is set to 5, but the target substation actually has only four upstream substations, then the target substation is used as the origin to trace back to the upstream substations of four voltage levels, and the target substation and the four upstream substations form a power supply line.

[0068] In this embodiment, a grid topology diagram is constructed using the preset number of rating accuracy levels associated with the planned incoming line information of the target substation and the remote signal location data collected for the target area where the target substation is located. This can intuitively reflect the deep structure of the power grid, such as the power supply area, power supply path, and busbar arrangement of the target substation, greatly improving the guidance of the grid dispatching operation. At the same time, when planning the dual-circuit power supply line of the target substation, the upstream substation can be screened based on actual needs to avoid the problem of excessive detection accuracy caused by too many nodes in the actual power supply line, which helps to save power grid maintenance resources.

[0069] Exemplarily, the double-circuit power supply line of the target substation is represented as:

[0070] ;

[0071] Where: i represents the i-th target substation; represents the first power supply line of the i-th target substation, represents the second power supply line of the i-th target substation; Indicates the switch number included in the first power supply line, and lists the incoming switch of the target substation as Trace back to until the voltage level is increased by a first preset number of voltage levels; Indicates the switch number included in the second power supply line, and lists the incoming switch of the target substation as Trace back to Up to a preset number of voltage levels, n and m represent the number of switches (the number of upstream substations) included in the first and second power supply lines respectively.

[0072] Step 103, determining the operating status of the double-circuit power supply line according to the grid topology diagram.

[0073] In an actual application scenario, step 103, i.e. determining the operating state of the double-circuit power supply line according to the grid topology diagram, specifically includes the following methods:

[0074] Method 1: Obtain power information of a double-circuit power supply line based on a grid topology diagram, wherein the power information includes line current and / or line voltage; if the line voltage of any power supply line is less than or equal to a preset voltage, or the line current of any power supply line is less than or equal to a preset current, determine that the double-circuit power supply line is in a single power supply state; if the line voltage of any power supply line is greater than a preset voltage, and the line current of any power supply line is greater than a preset current, determine that the double-circuit power supply line is in a normal operating state.

[0075] In this embodiment, according to the double-circuit power supply lines indicated in the grid topology diagram, the system controls the power collection device at each switch on each power supply line to collect power information. If the power information value of any power supply line in the double-circuit power supply line is extremely small or equal to 0, it means that a switch node in the power supply line is broken. At this time, the target substation is powered by another power supply line alone. At this time, the system can determine that the target substation is in a single power supply state. If the other power supply line that is powered separately is also interrupted, the power supply will be stopped, so that the power supply error rate of the target substation is low, and there is a power supply risk. On the contrary, it is determined that the target substation is in normal operation and there is no risk.

[0076] Method 2: compare the switch type information and switch identification information of the upstream substation on the double-circuit power supply line in the grid topology diagram, wherein the switch identification information includes the location identification and / or the equipment identification; if the switch type information and the switch identification information of the upstream substation located on different power supply lines are the same, it is determined that the double-circuit power supply line is in the same-source power supply state; if the switch type information or the switch identification information of the upstream substation located on different power supply lines is different, it is determined that the double-circuit power supply line is in normal operating state.

[0077] Among them, switches with different switch type information are applied to upstream substations of different voltage levels.

[0078] In this embodiment, the system determines whether the same upstream substation is connected to the double-circuit power supply line based on the switch type information and switch identification information of the switch equipment in the upstream substation indicated in the grid topology diagram. If it is detected that the switch type information of the upstream substations located on different power supply lines is the same, it means that the voltage level of the upstream substations used by the switches on different power supply lines is the same; if it is detected that the switch identification information of the upstream substations located on different power supply lines is the same, it means that the positions or marking points of the upstream substations located on different power supply lines are the same. At this time, the system can determine that the switch equipment used as the basis for comparison is applied to the same upstream substation at the same position and the same voltage level on different power supply lines, that is, the same upstream substation is connected to different power supply lines, and the double-circuit power supply line is in the same source power supply state. If the upstream substation of the same source fails, it will cause the target substation to have a low power supply capacity error rate, and there is a power supply risk. On the contrary, it is determined that the target substation is in normal operation and there is no risk.

[0079] For example, on the first power supply line For the 220kV switch of station A, For the 110kV switch of station B, For the 35kV switch of station B, For the 35kV switch of Station C, the second power supply line For the 110kV switch of station A, For the 35kV switch of station B, It is the 10kV switch of Station E. It means that the electric energy reaches the target substation through Station A of 220kV, Station B of 110kV, Station B of 35kV, Station C of 35kV, or Station A of 110kV, Station B of 35kV, and Station E of 10kV. Among them, A, B, C, and E are different location identifiers of substations. It can be seen that the first power supply line and the second power supply line both use the 35kV switch of Station B, that is, the double-circuit power supply line is connected to the 35kV Station B, and there is a risk of homology.

[0080] Method three, according to the grid topology diagram, determine the upstream substation adjacent to the target substation as the upper power source; if the equipment layout information or wiring layout information of the upper power source meets the preset dangerous conditions, determine that the double-circuit power supply line is in the upper power source dangerous state; if the equipment layout information and wiring layout information of the upper power source do not meet the preset dangerous conditions, determine that the double-circuit power supply line is in normal operating state.

[0081] Specifically, if the number of main transformers of the upper-level power supply is less than or equal to a first preset number, it is determined that the equipment layout information meets the preset danger condition; if the number of busbars of the upper-level power supply is less than or equal to a second preset number, it is determined that the wiring layout information meets the preset danger condition; if the number of power input lines of the upper-level power supply is less than or equal to a third preset number, it is determined that the wiring layout information meets the preset danger condition.

[0082] Among them, the first preset number, the second preset number, and the third preset number can be reasonably set according to the power supply danger situation, and the first preset number, the second preset number, and the third preset number can be the same or different, and the embodiment of the present application does not make specific limitations. For example, the first preset number, the second preset number, and the third preset number are all set to 1, then when the upper power supply has a single power supply, a single main transformer, or a single busbar, its operating state is determined to be a dangerous state of the upper power supply, and there is a risk.

[0083] In this embodiment, the upstream substation that directly supplies power to the target substation is found as the upper power source through the grid topology diagram. It is judged whether the upper power source has power supply risk through the equipment layout information or wiring layout information of the upper power source. If the equipment layout information or wiring layout information of the upper power source meets the preset dangerous conditions, it means that there is a certain power supply risk in the upper power source, which is likely to cause abnormal power supply to the target substation. Then the system can determine that the double-circuit power supply line is in a dangerous state of the upper power source. Otherwise, it is determined that the target substation is in normal operation and there is no risk.

[0084] Exemplary, judgment principle 1: , that is, the voltage at the switch device is not 0; if the judgment principle 1 is met, there is no operation risk, and the judgment principle 2 is continued; if the judgment principle 1 is not met, it is determined that there is a single power supply operation risk. Judgment principle 2: , that is, the switchgear is different; if judgment principle 2 is met, there is no operation risk, and judgment principle 3 is continued; if judgment principle 2 is not met, it is judged that there is a same-source operation risk. Judgment principle 3: The substation as the upper power source does not have a single power source / single main transformer / single busbar operation; if judgment principle 3 is met, there is no operation risk; if judgment principle 3 is met, it is judged that there is an upper power source operation risk.

[0085] Step 104: if the operating state belongs to a preset abnormal state, output warning information according to the operating state.

[0086] The preset abnormal state includes a single power supply state, a same-source power supply state and / or an upper-level power supply dangerous state.

[0087] The risk warning method for the power system provided in the embodiment of the present application constructs a grid topology based on the preset number associated with the rating accuracy level, the incoming line information of the target substation, and the remote signal location data in the target area where the target substation is located. The grid topology diagram is used to obtain the current, voltage, upstream substation location, equipment / switch attributes and other information of the double-circuit power supply line connected to the target substation, and analyze the operating status of the double-circuit power supply line. When there is an abnormality in the operating status of the double-circuit power supply line, an early warning message is output to promptly remind the dispatcher of the risk of the power grid. On the one hand, the real-time monitoring and reminder function of the operating risk of the target substation is realized, and the dispatcher is assisted to quickly deal with the operating risk, which greatly improves the power supply reliability and is extremely practical. On the other hand, the rating accuracy level set by the user is used to automatically match the detection quantity of the upstream substation, so that the abnormal detection of the double-circuit power supply line of the target substation is more in line with actual needs and avoids waste of resources.

[0088] In actual application scenarios, step 104, that is, outputting warning information based on the operating status, specifically includes the following steps: inputting the operating status into the deep learning model to obtain the risk level that matches the operating status; determining the treatment measures corresponding to the risk level and the operating status; combining the treatment measures and the operating status to obtain warning information; sending the warning information to the dispatching node of the target substation, so that the dispatching node can associate and display the treatment measures and the operating status.

[0089] It is understandable that the deep learning model can be trained according to preset operating states and preset risk level labels.

[0090] Among them, under different risk levels, the corresponding disposal measures for the same operating state can be the same or different. Disposal measures can be reasonably set based on maintenance experience, such as cutting off the switch, calling for maintenance, initializing the control system, switching stations, etc.

[0091] In this embodiment, after determining that the operating state of the target substation is abnormal, at least one different abnormal operating state of the target substation is evaluated through a pre-trained deep learning model to determine the risk level of the target substation. The risk level is then used to match the disposal measures for alleviating or resolving the abnormal operating state. The disposal measures and the abnormal operating state are sent to the dispatching node of the target substation as early warning information for display, so that the dispatching personnel of the dispatching node can promptly know the operating state of the target substation equipment and the potential safety power supply risks, which is conducive to the dispatching personnel to formulate management strategies in a targeted manner, reduce the possibility of failures, improve the reliability and stability of equipment, and thus improve production efficiency.

[0092] For example, if judgment principle 1 is not met, the target substation power operation risk level is level one, and the abnormality handling work can be completed by cutting off the switch and notifying the maintenance personnel; if judgment principle 2 is not met, the target substation power operation risk level is level two, and non-homologous substations can be found, and power dispatch can be performed by switching substations; if judgment principle 3 is not met, the target substation power operation risk level is level three, and power dispatch can be performed by switching substations. If judgment principles 1 and 3 are not met, the target substation power operation risk level is level four, and the abnormality handling work can be completed by cutting off the switch and notifying the maintenance personnel. Pop-up window alarms are used for risk grading and auxiliary disposal measures to remind dispatchers to handle them in time.

[0093] Furthermore, in one embodiment, the risk warning method for the power system further includes: in response to a confirmation instruction of the disposal measure, executing a disposal operation in the disposal measure.

[0094] In this embodiment, when the dispatcher confirms that the abnormal operating status needs to be handled, the system quickly responds to the confirmation instructions of the disposal measures and executes the corresponding disposal operations. This can not only effectively prevent the risk or problem from further expanding, control the situation in a timely manner, and avoid causing greater losses, but also reduce the difficulty of the dispatcher in handling the abnormality and save human resources.

[0095] It should be noted that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0096] Furthermore, if Figure 2 As shown, as a specific implementation of the risk warning method for the above-mentioned power system, an embodiment of the present application provides a risk warning device 200 for a power system, and the risk warning device 200 for the power system includes: an acquisition module 201, a construction module 202, a status analysis module 203 and a warning module 204.

[0097] The acquisition module 201 is used to respond to the detection instruction, parse the detection instruction and obtain the rating accuracy level of the target substation;

[0098] A construction module 202 is used to construct a grid topology map according to the preset number associated with the rating accuracy level, the incoming line information of the target substation and the remote signal location data in the target area where the target substation is located, wherein the grid topology map includes a double-circuit power supply line of the target substation, and any power supply line of the double-circuit power supply line is connected to less than or equal to the preset number of upstream substations;

[0099] The state analysis module 203 is used to determine the operating state of the double-circuit power supply line according to the grid topology diagram;

[0100] The warning module 204 is used to output warning information according to the operating state if the operating state belongs to a preset abnormal state; wherein the preset abnormal state includes a single power supply state, a same-source power supply state and / or a superior power supply dangerous state.

[0101] In this embodiment, a grid topology is constructed based on the preset number associated with the rating accuracy level, the incoming line information of the target substation, and the remote signal location data in the target area where the target substation is located. The grid topology diagram is used to obtain the current, voltage, upstream substation location, equipment / switch attributes and other information of the double-circuit power supply line connected to the target substation, and the operating status of the double-circuit power supply line is analyzed. When there is an abnormality in the operating state of the double-circuit power supply line, an early warning message is output to promptly remind the dispatcher of the risk of the power grid. On the one hand, the real-time monitoring and reminder function of the operating risk of the target substation is realized, and the dispatcher is assisted to quickly deal with the operating risk, which greatly improves the power supply reliability and is extremely practical. On the other hand, the rating accuracy level set by the user is used to automatically match the detection quantity of the upstream substation, so that the abnormal detection of the double-circuit power supply line of the target substation is more in line with actual needs and avoids waste of resources.

[0102] Furthermore, the status analysis module 203 is specifically used to obtain power information of the double-circuit power supply line based on the grid topology diagram, wherein the power information includes line current and / or line voltage; if the line voltage of any power supply line is less than or equal to a preset voltage, or the line current of any power supply line is less than or equal to a preset current, it is determined that the double-circuit power supply line is in a single power supply state; if the line voltage of any power supply line is greater than the preset voltage, and the line current of any power supply line is greater than the preset current, it is determined that the double-circuit power supply line is in a normal operating state.

[0103] Furthermore, the status analysis module 203 is specifically used to compare the switch type information and switch identification information of the upstream substation on the double-circuit power supply line in the grid topology diagram, wherein the switch identification information includes the location identification and / or the equipment identification; if the switch type information and the switch identification information of the upstream substation located on different power supply lines are the same, it is determined that the double-circuit power supply line is in the same-source power supply state; if the switch type information or the switch identification information of the upstream substation located on different power supply lines is different, it is determined that the double-circuit power supply line is in a normal operating state.

[0104] Furthermore, the status analysis module 203 is specifically used to determine the upstream substation adjacent to the target substation as the upper-level power supply based on the grid topology diagram; if the equipment layout information or the wiring layout information of the upper-level power supply meets the preset dangerous conditions, it is determined that the double-circuit power supply line is in the upper-level power supply dangerous state; if the equipment layout information and the wiring layout information of the upper-level power supply do not meet the preset dangerous conditions, it is determined that the double-circuit power supply line is in a normal operating state.

[0105] Furthermore, the status analysis module 203 is specifically used to determine that the equipment layout information meets the preset danger condition if the number of main transformers of the upper-level power supply is less than or equal to a first preset number; if the number of busbars of the upper-level power supply is less than or equal to a second preset number, determine that the wiring layout information meets the preset danger condition; if the number of power input lines of the upper-level power supply is less than or equal to a third preset number, determine that the wiring layout information meets the preset danger condition.

[0106] Furthermore, the early warning module 204 includes:

[0107] A matching module (not shown in the figure) is used to input the operating status into the deep learning model to obtain the risk level that matches the operating status; and determine the disposal measures corresponding to the risk level and the operating status;

[0108] An information generation module (not shown in the figure) is used to combine treatment measures and operating status to obtain early warning information;

[0109] The communication module (not shown in the figure) is used to send the warning information to the dispatching node of the target substation, so that the dispatching node can associate and display the disposal measures and operating status.

[0110] Furthermore, the risk warning device 200 of the power system further includes:

[0111] The control module (not shown in the figure) is used to execute the treatment operation in the treatment measure in response to the confirmation instruction of the treatment measure.

[0112] For the specific definition of the risk warning device of the power system, please refer to the definition of the risk warning method of the power system above, which will not be repeated here. Each module in the above-mentioned risk warning device of the power system can be implemented in whole or in part by software, hardware and a combination thereof. The above-mentioned modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory of the computer device in the form of software, so that the processor can call and execute the operations corresponding to the above modules.

[0113] Based on the above Figure 1 The method shown in the embodiment of the present application accordingly provides a readable storage medium on which a computer program is stored, and when the program is executed by a processor, the above-mentioned Figure 1 The risk early warning method for the power system shown.

[0114] Based on this understanding, the technical solution of the present application can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.), and includes a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each implementation scenario of the present application.

[0115] Based on the above Figure 1 The method shown, and Figure 2 In order to achieve the above-mentioned purpose, the embodiment of the present application further provides a computer device, which can be a personal computer, a server, a network device, etc. The computer device includes a storage medium and a processor; the storage medium is used to store a computer program; the processor is used to execute the computer program to achieve the above-mentioned Figure 1 The risk early warning method for the power system shown.

[0116] Optionally, the computer device may also include a user interface, a network interface, a camera, a radio frequency (RF) circuit, a sensor, an audio circuit, a WI-FI module, etc. The user interface may include a display, an input unit such as a keyboard, etc., and the optional user interface may also include a USB interface, a card reader interface, etc. The network interface may optionally include a standard wired interface, a wireless interface (such as a Bluetooth interface, a WI-FI interface), etc.

[0117] Those skilled in the art will appreciate that the computer device structure provided in this embodiment does not limit the computer device, and may include more or fewer components, or a combination of certain components, or different component arrangements.

[0118] The storage medium may also include an operating system and a network communication module. The operating system is a program that manages and saves the hardware and software resources of the computer device, and supports the operation of information processing programs and other software and / or programs. The network communication module is used to realize communication between the components inside the storage medium, and communication with other hardware and software in the physical device.

[0119] Through the description of the above implementation methods, the technical personnel in this field can clearly understand that the present application can be implemented by means of software plus the necessary general hardware platform, or can be implemented by hardware to respond to the detection instruction, parse the detection instruction to obtain the rating accuracy level of the target substation; according to the preset number associated with the rating accuracy level, the incoming line information of the target substation and the remote signal location data in the target area where the target substation is located, a grid topology diagram is constructed, wherein the grid topology diagram includes the double-circuit power supply line of the target substation, and any power supply line in the double-circuit power supply line is connected to less than or equal to the preset number of upstream substations; according to the grid topology diagram, the operating state of the double-circuit power supply line is determined; if the operating state belongs to the preset abnormal state, the early warning information is output according to the operating state; wherein the preset abnormal state includes a single power supply state, a homologous power supply state and / or a dangerous state of the upper power supply. The embodiment of the present application constructs a grid topology according to the preset number associated with the rating accuracy level, the incoming line information of the target substation and the remote signal location data in the target area where the target substation is located. The grid topology diagram is used to obtain the current, voltage, upstream substation location, equipment / switch attributes and other information of the double-circuit power supply line connected to the target substation, and analyze the operating status of the double-circuit power supply line. When there is an abnormality in the operating status of the double-circuit power supply line, an early warning message is output to promptly remind the dispatcher of the risks of the power grid. On the one hand, the real-time monitoring and reminder function of the target substation operation risk is realized, and the dispatcher is assisted to quickly deal with the operation risk, which greatly improves the power supply reliability and is extremely practical. On the other hand, the rating accuracy level set by the user is used to automatically match the detection quantity of the upstream substation, so that the abnormal detection of the double-circuit power supply line of the target substation is more in line with actual needs and avoids waste of resources.

[0120] Those skilled in the art will appreciate that the accompanying drawings are only schematic diagrams of a preferred implementation scenario, and the modules or processes in the accompanying drawings are not necessarily necessary for implementing the present application. Those skilled in the art will appreciate that the modules in the devices in the implementation scenario can be distributed in the devices of the implementation scenario according to the description of the implementation scenario, or can be changed accordingly and located in one or more devices different from the present implementation scenario. The modules of the above-mentioned implementation scenario can be combined into one module, or can be further split into multiple submodules.

[0121] The above serial numbers of this application are only for description and do not represent the advantages and disadvantages of the implementation scenarios. The above disclosure is only a few specific implementation scenarios of this application, but this application is not limited to them, and any changes that can be thought of by technicians in this field should fall within the scope of protection of this application.

Claims

1. A risk early warning method for a power system, characterized in that: The method comprises: In response to the detection instruction, parsing the detection instruction to obtain the rating accuracy level of the target substation; A grid topology diagram is constructed according to the preset number associated with the rating accuracy level, the incoming line information of the target substation and the remote signaling location data within the target area where the target substation is located, wherein the grid topology diagram includes a double-circuit power supply line of the target substation, and any power supply line of the double-circuit power supply line is connected to an upstream substation less than or equal to the preset number; Determining the operating state of the double-circuit power supply line according to the grid topology diagram; If the operating state belongs to a preset abnormal state, output warning information according to the operating state; wherein the preset abnormal state includes a single power supply state, a same-source power supply state and / or a superior power supply dangerous state; Determining the operating state of the double-circuit power supply line according to the grid topology diagram includes: Comparing the switch type information and switch identification information of the upstream substation on the double-circuit power supply line in the grid topology diagram; If the switch type information and the switch identification information of the upstream substation located on different power supply lines are the same, it is determined that the double-circuit power supply line is in the same-source power supply state; If the switch type information or the switch identification information of the upstream substations located on different power supply lines is different, it is determined that the double-circuit power supply line is in normal operation.

2. The risk early warning method for the power system according to claim 1 is characterized in that: Determining the operating state of the double-circuit power supply line according to the grid topology diagram includes: Acquiring power information of the double-circuit power supply line according to the grid topology diagram, wherein the power information includes line current and / or line voltage; If the line voltage of any power supply line is less than or equal to a preset voltage, or the line current of any power supply line is less than or equal to a preset current, it is determined that the double-circuit power supply line is in the single power supply state; If the line voltage of any power supply line is greater than a preset voltage, and the line current of any power supply line is greater than a preset current, it is determined that the double-circuit power supply line is in a normal operating state.

3. The risk early warning method for the power system according to claim 1, characterized in that: The switch identification information includes a location identification and / or a device identification.

4. The risk early warning method for the power system according to claim 1 is characterized in that: Determining the operating state of the double-circuit power supply line according to the grid topology diagram includes: Determining an upstream substation adjacent to the target substation as a superior power source according to the grid topology diagram; If the equipment layout information or wiring layout information of the upper power supply meets the preset dangerous condition, it is determined that the double-circuit power supply line is in the dangerous state of the upper power supply; If the equipment layout information and wiring layout information of the upper power supply do not meet the preset danger conditions, it is determined that the double-circuit power supply line is in normal operation.

5. The risk early warning method for the power system according to claim 4 is characterized in that: The method further comprises: If the number of main transformers of the upper power supply is less than or equal to a first preset number, determining that the equipment layout information meets the preset danger condition; If the number of the busbars of the upper power supply is less than or equal to a second preset number, determining that the wiring layout information meets the preset danger condition; If the number of power input lines of the upper power supply is less than or equal to a third preset number, it is determined that the wiring layout information meets the preset danger condition.

6. The risk early warning method for a power system according to any one of claims 1 to 5, characterized in that: Outputting warning information according to the operating status includes: Inputting the operating status into a deep learning model to obtain a risk level matching the operating status; Determine the treatment measures corresponding to the risk level and the operating status; Combining the treatment measures and the operating status to obtain the warning information; The early warning information is sent to a dispatching node of the target substation, so that the dispatching node displays the disposal measures and the operating status in association.

7. The risk early warning method for the power system according to claim 6, characterized in that: The method further comprises: In response to a confirmation instruction of the treatment measure, a treatment operation in the treatment measure is executed.

8. A risk warning device for a power system, characterized in that: The device comprises: An acquisition module, configured to respond to a detection instruction and parse the detection instruction to acquire a rating accuracy level of a target substation; A construction module, used to construct a grid topology map according to the preset number associated with the rating accuracy level, the incoming line information of the target substation and the remote signal location data in the target area where the target substation is located, wherein the grid topology map includes a double-circuit power supply line of the target substation, and any power supply line of the double-circuit power supply line is connected to less than or equal to the preset number of upstream substations; A state analysis module, used to determine the operating state of the double-circuit power supply line according to the grid topology diagram; An early warning module, configured to output early warning information according to the operating state if the operating state belongs to a preset abnormal state; wherein the preset abnormal state includes a single power supply state, a same-source power supply state and / or a superior power supply dangerous state; The status analysis module is specifically used to compare the switch type information and switch identification information of the upstream substation on the double-circuit power supply line in the grid topology diagram, wherein the switch identification information includes a location identification and / or a device identification; if the switch type information and the switch identification information of the upstream substation located on different power supply lines are the same, it is determined that the double-circuit power supply line is in the same-source power supply state; if the switch type information or the switch identification information of the upstream substation located on different power supply lines are different, it is determined that the double-circuit power supply line is in a normal operating state.

9. A readable storage medium having a program or instruction stored thereon, characterized in that: When the program or instruction is executed by a processor, the steps of the risk warning method for a power system as described in any one of claims 1 to 7 are implemented.

10. A computer device comprising a storage medium, a processor, and a computer program stored in the storage medium and executable on the processor, characterized in that: When the processor executes the program, the risk early warning method for the power system according to any one of claims 1 to 7 is implemented.

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