Power grid transmission line operation control method, device and equipment, readable storage medium and power grid transmission line operation control system

Abstract

The invention relates to a power grid transmission line operation control method, device and equipment, a readable storage medium and a power grid transmission line operation control system. The method comprises the following steps: in a hot standby state, acquiring the induced voltage of the side where each transformer substation is located on a power transmission line, and comparing each induced voltage with a preset voltage threshold value in sequence, and when any induced voltage is smaller than the corresponding voltage threshold value of the power transmission line, switching on the power transmission line. Generating alarm information used for representing that the grounding wire is not disassembled or the grounding knife switch is switched on in the hot standby state; and under the condition that each induced voltage is greater than or equal to the voltage threshold value, controlling a switch on a line on the side where each transformer substation is located to be closed, so that the power transmission line enters an operation state. The power transmission line in the hot standby state is ensured to be in a normal connection state, when the power transmission line enters an operation state, no voltage loss of a transformer substation and / or a traction station caused by grounding of a grounding wire or closing of a grounding knife switch is caused, and stable and normal operation of the power transmission line of a power grid is ensured.

Description

Technical Field

[0001] The present application relates to the technical field of power grid transmission line operation control, and in particular to a power grid transmission line operation control method, apparatus, device, readable storage medium, and power grid transmission line operation control system. Background Art

[0002] During power transmission, if the line grounding wire is grounded or the grounding switch is closed, it can cause a loss of voltage in the substation and / or traction station, seriously threatening the safety of the power grid. Currently, technical measures for detecting grounding of line grounding wires and grounding switches include implementing a five-defense system in the substation, utilizing the auxiliary position of the grounding switch to achieve five-defense control and manage the substation grounding switch; and building a complete grounding wire management system using electronic tags and their identification devices as well as remote data communication to accurately obtain relevant grounding wire status information, thereby controlling grounding wire usage.

[0003] However, the aforementioned auxiliary position of the grounding switch has the risk of failure, resulting in it not accurately reflecting the actual status of the grounding switch. The aforementioned grounding wire management system requires positioning and communication with the managed grounding wires, but there is no unified standard, and its actual operation is not mature. Therefore, it can be seen that the current stage of the normal operation control of power grid transmission lines is still lacking. Summary of the Invention

[0004] Based on this, it is necessary to provide a power grid transmission line operation control method, device, equipment, readable storage medium and power grid transmission line operation control system to address the above technical problems, which can ensure the normal and stable operation of the power grid transmission line.

[0005] In a first aspect, the present application provides a method for controlling the operation of a power transmission line in a power grid, the method comprising:

[0006] When the transmission line is in hot standby mode, the induced voltage on the side of each substation on the transmission line is obtained;

[0007] When any induced voltage is lower than the voltage threshold corresponding to the transmission line, an alarm message is generated; the alarm message is used to indicate that the grounding wire is not removed or the grounding knife switch is closed in the hot standby state;

[0008] When all induced voltages are greater than or equal to the voltage threshold value, the switches on the lines on the side where each substation is located are controlled to be closed.

[0009] In one embodiment, when any induced voltage is less than a voltage threshold corresponding to the transmission line, after the step of generating an alarm message, the method further includes:

[0010] Display the alarm information display interface;

[0011] In response to the alarm elimination confirmation operation performed on the alarm information display interface, the corresponding switches on each substation side are controlled to close;

[0012] The alarm elimination confirmation operation indicates that the user confirms that there is no grounding wire that has not been removed or the grounding switch is closed.

[0013] In one embodiment, the voltage threshold is greater than the maximum value of the zero-drift voltage of the transmission line.

[0014] In one embodiment, the step of obtaining the induced voltage on the side of each substation on the transmission line includes:

[0015] The induced voltage on the substation side of the transmission line is obtained through a voltage transformer.

[0016] In one embodiment, the voltage threshold value is determined according to the minimum precision voltage of the voltage transformer and the voltage transformer ratio.

[0017] In one embodiment, before the step of obtaining the induced voltage on the side of each substation on the transmission line, the method further includes:

[0018] When the transmission line is in cold standby mode, disconnect the grounding switches corresponding to all substations on the transmission line;

[0019] Close the busbar switches and load-side switches corresponding to all substations on the transmission line.

[0020] In a second aspect, the present application further provides a power grid transmission line operation control device, the device comprising:

[0021] The induced voltage acquisition module is used to obtain the induced voltage on the side of each substation on the transmission line when the transmission line is in hot standby state;

[0022] The alarm module is used to generate an alarm message when any induced voltage is lower than the voltage threshold value corresponding to the transmission line; the alarm message is used to indicate that the grounding wire is not removed or the grounding knife switch is closed in the hot standby state;

[0023] The control module is used to control the closing of switches on the lines on the side where each substation is located when each induced voltage is greater than or equal to a voltage threshold value.

[0024] In a third aspect, the present application also provides a computer device including a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of the above-mentioned power grid transmission line operation control method when executing the computer program.

[0025] In a fourth aspect, the present application also provides a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, the steps of the above-mentioned power grid transmission line operation control method are implemented.

[0026] In a fifth aspect, the present application further provides a power grid transmission line operation control system, comprising:

[0027] A plurality of voltage transformers, each of which is connected to a circuit on a side of each substation on the transmission line to detect an induced voltage on the side of each substation;

[0028] Computer equipment, the computer equipment is respectively connected to the grounding switch, bus switch, load side switch, switch and voltage transformer corresponding to each substation on the transmission line; the computer equipment is used to execute the steps of the above-mentioned power grid transmission line operation control method.

[0029] The above-mentioned power grid transmission line operation control method, device, equipment, readable storage medium and power grid transmission line operation control system obtain the induced voltage on the side of each substation on the transmission line in the hot standby state, and compare each induced voltage with the preset voltage threshold value in sequence. When any induced voltage is less than the voltage threshold value corresponding to the transmission line, an alarm message is generated to indicate that the grounding wire is not removed or the grounding knife switch is closed in the hot standby state; when each induced voltage is greater than or equal to the voltage threshold value, the switch on the line on the side of each substation is controlled to close, so that the transmission line enters the operation state. This ensures that the transmission line in the hot standby state is in a normal connection state, ensures that when the transmission line enters the operation state, the substation and / or traction station will not lose pressure due to the grounding of the grounding wire or the grounding knife switch being in the closed state, and ensures the stable and normal operation of the power grid transmission line. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following briefly introduces the drawings required for use in the embodiments of the present application or related technical descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 A diagram illustrating an application environment of a method for controlling operation of a power grid transmission line according to an embodiment;

[0032] Figure 2 1 is a flow chart of a method for controlling the operation of a power grid transmission line in one embodiment;

[0033] Figure 3A circuit diagram of a power grid transmission line in a cold standby state in one embodiment;

[0034] Figure 4 A circuit diagram of a power grid transmission line in an embodiment of the present invention is shown;

[0035] Figure 5 is a structural block diagram of a power grid transmission line operation control device in one embodiment;

[0036] Figure 6 FIG. 1 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0038] The power grid transmission line operation control method provided in the embodiment of the present application can be applied to Figure 1 The application environment of the transmission line including two substations (substation A and substation B) is shown. In which, when the transmission line is in hot standby state, that is, Figure 1 The busbar switches 102 and load-side switches 104 corresponding to each substation are in a combined state, and the induced voltage on the side of each substation is obtained (which can be obtained through the voltage transformer 106). When any induced voltage is less than the preset voltage threshold value, an alarm message is generated to alert the staff that there is a grounding wire in the current power grid transmission line that has not been removed or the grounding switch 108 is in a closed state; when all induced voltages are greater than or equal to the above-mentioned voltage threshold value, the switch 110 corresponding to the side of each substation is controlled to be closed to put the transmission line into operation.

[0039] In an exemplary embodiment, Figure 2 As shown, a method for controlling the operation of a power transmission line in a power grid is provided, comprising:

[0040] S202 , when the transmission line is in a hot standby state, obtaining the induced voltage on the side of each substation on the transmission line.

[0041] The hot standby state of the transmission line is to confirm that the transmission line has the ability to be connected, to ensure that the transmission line can supply power in time when the grid needs it, and at the same time, to conduct necessary safety inspections on the equipment on the transmission line in the hot standby state to prevent accidents and ensure that the transmission line can operate normally in the subsequent operating state.

[0042] When the grounding wire in the transmission line is not removed or the grounding switch is in the closed state, the induced voltage obtained from the transmission line is 0. When the grounding wire in the transmission line is removed or the grounding switch is in the open state, due to the presence of energized equipment around the transmission line in hot standby state, the induced voltage obtained from the transmission line is not 0. Among them, the above-mentioned induced voltage is mainly the electrostatic coupling component voltage generated by the maintenance circuit. The induced voltage is related to the ratio of the capacitance in the transmission line to the capacitance of the maintenance circuit relative to the ground, and is positively correlated with the operating voltage of the transmission line, but has nothing to do with the length of the transmission line or the transmission power.

[0043] S204, when any induced voltage is less than the voltage threshold value corresponding to the transmission line, an alarm message is generated; the alarm message is used to indicate that the grounding wire is not removed or the grounding switch is closed in the hot standby state.

[0044] The staff can check the status of the grounding wires and grounding switches of the transmission lines based on the alarm information, thereby ensuring that all grounding wires in the transmission lines are removed and all grounding switches are in the open state.

[0045] S204: When all induced voltages are greater than or equal to the voltage threshold, the switches on the lines on the substation side are controlled to close. Figure 1 The switch 110 in the circuit breaker is closed to put the transmission line into operation. Specifically, when closing the switches corresponding to the substations on each side, the substation with a strong power source can be closed first. The substation with a strong power source is the substation close to the power plant.

[0046] The voltage threshold value can be determined one-to-one according to the voltage level of the transmission line in actual application. For example, the voltage threshold value corresponding to a 220kV transmission line can be 0.4kV.

[0047] A corresponding minimum voltage value is determined to ensure the normal operation of the transmission line, and this minimum voltage value is used as the voltage threshold value for the transmission line. When the induced voltage is higher than the voltage threshold value, it can be indicated that all devices on the transmission line are operating normally. Therefore, the circuit status of the transmission line in the hot standby state can be determined based on the induced voltage and the voltage threshold value.

[0048] Get the substations on the transmission line (such as Figure 1The induced voltage on the side where the substation A and substation B are located can avoid the situation where the induced voltage of the substation on at least one side of the transmission line is 0. Specifically, if the induced voltage is only detected on the substation A side, when the grounding knife switch on the substation B side is in the closed state, the induced voltage on the substation B side cannot be obtained from the substation A side, and the circuit design at this time is not reliable. Therefore, the reliability of the power grid transmission line operation control method can be improved by detecting the induced voltage on each substation side. Of course, Figure 1 The number of substations shown is for illustration only. In an actual transmission line, there may be more than two substations. In this case, the induced voltages on all substation sides need to be acquired.

[0049] In the above-mentioned power grid transmission line operation control method, the induced voltage on the side of each substation on the transmission line is obtained in the hot standby state, and each induced voltage is sequentially compared with a preset voltage threshold value. When any induced voltage is less than the voltage threshold value corresponding to the transmission line, an alarm message is generated to indicate that the grounding wire is not removed or the grounding knife is closed in the hot standby state; when each induced voltage is greater than or equal to the voltage threshold value, the switch on the line on the side of each substation is controlled to close, so that the transmission line enters the operating state. This ensures that the transmission line in the hot standby state is in a normal connection state, ensures that when the transmission line enters the operating state, the substation and / or traction station will not lose pressure due to the grounding of the grounding wire or the grounding knife being in the closed state, and ensures the stable and normal operation of the power grid transmission line.

[0050] In an exemplary embodiment, when any induced voltage is less than a voltage threshold corresponding to the transmission line, after the step of generating an alarm message, the method further includes:

[0051] Display the alarm information display interface.

[0052] For example, the alarm information can be displayed to the staff in the form of a pop-up window through a terminal such as a computer device, and the pop-up window content can be accompanied by the message "Please verify whether the grounding wire is removed or the grounding switch is opened."

[0053] In response to the alarm elimination confirmation operation performed on the alarm information display interface, the corresponding switches on the side of each substation are controlled to close.

[0054] The alarm elimination confirmation operation indicates that the user confirms that there is no grounding wire that has not been removed or the grounding switch is closed.

[0055] The alarm elimination confirmation operation can be to delete the above-mentioned display interface for displaying the alarm information, or to perform a point control operation such as clicking the "Confirmed" button on the above-mentioned display interface. Of course, the alarm elimination confirmation operation can also be any operation that can indicate that the user has confirmed that there is no grounding wire in the transmission line that has not been removed or the grounding switch is closed.

[0056] In an exemplary embodiment, the voltage threshold value is greater than a maximum value of a zero-drift voltage of the transmission line.

[0057] Zero-drift voltage in a transmission line refers to the deviation of the line's phase voltage or ground voltage from its ideal zero voltage (0V) under normal conditions. Zero-drift voltage is often related to factors such as the transmission line's load, insulation performance, grounding conditions, and climatic conditions. In practical projects, zero-drift voltage is typically controlled within a safe range. For example, in high-voltage lines of 220 kV and above, zero-drift voltage may be limited to tens of volts. The maximum value of zero-drift voltage in practical applications should be determined based on relevant power industry standards and the actual conditions of the transmission line.

[0058] Therefore, the voltage threshold value being greater than the maximum value of the zero-drift voltage of the transmission line can ensure that the transmission line can be in a normal working state.

[0059] In an exemplary embodiment, the step of obtaining the induced voltage on the side of each substation on the transmission line includes:

[0060] The induced voltage on the substation side of the transmission line is obtained through a voltage transformer.

[0061] The voltage transformer can isolate the transmission line from the detection end of the induced voltage, thereby protecting the safety of the equipment and personnel at the detection end of the induced voltage and reducing the danger of high voltage to equipment and personnel.

[0062] In an exemplary embodiment, the voltage threshold value is determined according to the minimum precision voltage of the voltage transformer and the voltage transformer ratio.

[0063] The above-mentioned minimum accuracy voltage can be determined based on the secondary value of the voltage transformer.

[0064] Specifically, the formula for determining the voltage threshold value is:

[0065] Uth=K k *M*N pt

[0066] Among them, Uth is the voltage threshold value, K k is the reliability coefficient, M is the minimum precision voltage of the voltage transformer (secondary value), N ptis the voltage transformer ratio. Kk can be selected from any value within the range of 1.5-2 according to actual application requirements.

[0067] In an exemplary embodiment, before the step of obtaining the induced voltage on the side of each substation on the transmission line, the method further includes:

[0068] When the transmission line is in cold standby mode, disconnect the grounding switches corresponding to all substations on the transmission line. Figure 3 As shown, disconnect all grounding switches on the transmission line to disconnect the transmission line from Figure 4 The maintenance state is converted to cold standby state.

[0069] Close the busbar switches and load-side switches corresponding to all substations on the transmission line. Figure 1 As shown, all busbar switches and load-side switches on the transmission line are closed to put the transmission line in hot standby state.

[0070] It should be understood that, although the various steps in the flowcharts involved in the various embodiments described above are displayed in sequence according to the instructions of the arrows, these steps are not necessarily executed in sequence in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and these steps can be executed in other orders. Moreover, at least a portion of the steps in the flowcharts involved in the various embodiments described above can include multiple steps or multiple stages, and these steps or stages are not necessarily executed and completed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a portion of steps or stages in other steps.

[0071] Based on the same inventive concept, embodiments of the present application also provide a power transmission line operation control device for implementing the aforementioned power transmission line operation control method. The solution provided by this device is similar to the solution described in the aforementioned method. Therefore, the specific limitations of one or more power transmission line operation control device embodiments provided below can be found in the aforementioned limitations of the power transmission line operation control method and will not be further elaborated here.

[0072] In an exemplary embodiment, Figure 5 As shown, a power grid transmission line operation control device 500 is provided, comprising: an induced voltage acquisition module 502, an alarm module 504 and a control module 506, wherein:

[0073] The induced voltage acquisition module is used to obtain the induced voltage on the side of each substation on the transmission line when the transmission line is in hot standby state.

[0074] The alarm module is used to generate an alarm message when any induced voltage is lower than the voltage threshold value corresponding to the transmission line; the alarm message is used to indicate that the grounding wire is not removed or the grounding knife switch is closed in the hot standby state.

[0075] The control module is used to control the closure of switches on the lines on the side where each substation is located when each induced voltage is greater than or equal to the voltage threshold value.

[0076] In an exemplary embodiment, the alarm module 504 further includes: a display module and a response module.

[0077] The display module is used to display the alarm information display interface.

[0078] The response module is used to respond to the alarm elimination confirmation operation performed on the alarm information display interface and control the corresponding switches on the side of each substation to close.

[0079] The alarm elimination confirmation operation indicates that the user confirms that there is no grounding wire that has not been removed or the grounding switch is closed.

[0080] In an exemplary embodiment, the voltage threshold value is greater than a maximum value of a zero-drift voltage of the transmission line.

[0081] In an exemplary embodiment, the induced voltage acquisition module 502 includes: an induced voltage acquisition submodule.

[0082] The induced voltage acquisition submodule is used to obtain the induced voltage on the side of each substation on the transmission line through a voltage transformer.

[0083] In an exemplary embodiment, the voltage threshold value is determined according to the minimum precision voltage of the voltage transformer and the voltage transformer ratio.

[0084] In an exemplary embodiment, the power grid transmission line operation control device 500 further includes: a cold standby state switching module and a hot standby state switching module.

[0085] The cold standby state switching module is used to disconnect the grounding switches corresponding to all substations on the transmission line when the transmission line is in the cold standby state.

[0086] The hot standby state switching module is used to close the busbar switches and load-side switches corresponding to all substations on the transmission line.

[0087] Each module in the aforementioned power grid transmission line operation control device may be implemented in whole or in part through software, hardware, or a combination thereof. Each module may be embedded in or independent of a processor in a computer device in the form of hardware, or may be stored in a memory in the computer device in the form of software, so that the processor can call and execute the corresponding operations of each module.

[0088] In an exemplary embodiment, a computer device is provided. The computer device may be a terminal, and its internal structure diagram may be as shown in FIG. Figure 6 As shown. The computer device includes a processor, memory, an input / output interface, a communication interface, a display unit, and an input device. The processor, memory, and input / output interface are connected via a system bus, and the communication interface, display unit, and input device are connected to the system bus via the input / output interface. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and computer program in the non-volatile storage medium. The input / output interface of the computer device is used to exchange information between the processor and external devices. The communication interface of the computer device is used to communicate with external terminals via wired or wireless means, and the wireless means can be implemented via Wi-Fi, a mobile cellular network, near-field communication (NFC), or other technologies. When executed by the processor, the computer program implements a method for controlling the operation of a power grid transmission line. The display unit of the computer device is used to produce a visually visible image and can be a display screen, a projection device, or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device can be a touch layer covering the display screen, or a button, trackball or touchpad set on the computer device casing, or an external keyboard, touchpad or mouse.

[0089] Those skilled in the art will understand that Figure 6 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than shown in the figure, or combine certain components, or have a different component arrangement.

[0090] In an exemplary embodiment, a computer device is provided, including a memory and a processor. The memory stores a computer program, and the processor implements the steps of the above-mentioned power grid transmission line operation control method when executing the computer program.

[0091] In an exemplary embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps of the above-mentioned power grid transmission line operation control method are implemented.

[0092] In an exemplary embodiment, a power grid transmission line operation control system is provided, comprising: a plurality of voltage transformers and a computer device.

[0093] A plurality of voltage transformers are respectively connected to the circuits on the side of each substation on the transmission line to detect the induced voltage on the side of each substation.

[0094] The computer equipment is respectively connected to the grounding switch, busbar switch, load side switch, switch and voltage transformer corresponding to each substation on the transmission line; the computer equipment is used to execute the steps of the above-mentioned power grid transmission line operation control method.

[0095] The power grid transmission line operation control system equipped with the power grid transmission line operation control method can perform wire connection detection and grounding switch status detection by detecting and comparing the induced voltage when the transmission line enters the hot standby state, so as to generate an alarm message to the computer equipment in time when the ground wire is not removed or the grounding switch is closed, so as to alert the staff and ensure the normal operation of the transmission line.

[0096] In one embodiment, a computer program product is provided, comprising a computer program, which implements the steps of the above-mentioned power grid transmission line operation control method when executed by a processor.

[0097] Those skilled in the art will understand that all or part of the processes in the above-mentioned embodiments can be implemented by instructing the relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. In particular, any reference to memory, database, or other media used in the embodiments provided in this application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The databases involved in the various embodiments provided herein may include at least one of a relational database and a non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the various embodiments provided herein may be, but are not limited to, general-purpose processors, central processing units (CPUs), graphics processing units (GPUs), digital signal processors (DSPs), programmable logic devices (PLDs), quantum computing-based data processing logic devices, artificial intelligence (AI) processors, and the like.

[0098] The technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0099] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be determined by the appended claims.

Claims

1. A method for controlling the operation of a power transmission line in a power grid, characterized in that: The method comprises: When the transmission line is in a hot standby state, obtaining the induced voltage on the side where each substation on the transmission line is located; In the case where any of the induced voltages is less than the voltage threshold value corresponding to the transmission line, an alarm message is generated; the alarm message is used to indicate that there is a grounding wire that has not been removed or the grounding switch is closed in the hot standby state; When the induced voltages are all greater than or equal to the voltage threshold value, switches on the lines on the side where the substations are located are controlled to be closed.

2. The method according to claim 1, characterized in that After the step of generating alarm information when any of the induced voltages is less than the voltage threshold value corresponding to the transmission line, the method further includes: Display the alarm information display interface; In response to the alarm elimination confirmation operation performed on the alarm information display interface, controlling the corresponding switches on the side where each substation is located to close; The alarm elimination confirmation operation indicates that the user confirms that there is no grounding wire that has not been removed or the grounding switch is closed.

3. The method according to claim 1, characterized in that The voltage threshold value is greater than the maximum value of the zero-drift voltage of the transmission line.

4. The method according to claim 1, characterized in that The obtaining of the induced voltage on the side where each substation on the transmission line is located includes: The induced voltage on the side where each substation on the transmission line is located is obtained through a voltage transformer.

5. The method according to claim 4, characterized in that The voltage threshold value is determined according to the minimum precision voltage of the voltage transformer and the voltage transformer ratio.

6. The method according to claim 1, characterized in that Before the step of obtaining the induced voltage on the side where each substation on the transmission line is located, the method further includes: When the transmission line is in a cold standby state, disconnecting the grounding switches corresponding to all substations on the transmission line; Close the busbar switches and load-side switches corresponding to all substations on the transmission line.

7. A power grid transmission line operation control device, characterized in that: The device comprises: An induced voltage acquisition module, used to acquire the induced voltage on the side where each substation on the transmission line is located when the transmission line is in a hot standby state; An alarm module is used to generate an alarm message when any of the induced voltages is less than a voltage threshold value corresponding to the transmission line; the alarm message is used to indicate that a grounding wire has not been removed or a grounding switch is closed in a hot standby state; The control module is used to control the closing of switches on the lines on the side where each substation is located when each of the induced voltages is greater than or equal to the voltage threshold value.

8. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 6 are implemented.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

10. A power grid transmission line operation control system, characterized in that: include: A plurality of voltage transformers, wherein the plurality of voltage transformers are respectively connected to the circuits on the side where each substation is located on the transmission line to detect the induced voltage on the side where each substation is located; A computer device, wherein the computer device is respectively connected to the grounding switch, bus switch, load-side switch, switch and each voltage transformer corresponding to each substation on the transmission line; the computer device is used to execute the steps of the method described in any one of claims 1 to 6.

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