Ground wire ice melting insulation matching design method and device, equipment and medium

Abstract

The present disclosure relates to a ground wire ice melting insulation coordination design method, device, equipment and medium. The ground wire ice melting insulation coordination design method comprises: determining the direct current required by the ground wire ice melting device for ice melting based on ice melting environment data; determining the direct current voltage at the output end of the ground wire ice melting device based on the direct current and the ground wire ice melting length; determining the operating overvoltage threshold and the lightning overvoltage threshold at the target position corresponding to the ground wire ice melting device based on the direct current voltage; determining the parameters of the lightning arrester based on the operating overvoltage threshold and the lightning overvoltage threshold; and determining the second insulation distance corresponding to the ground wire ice melting device and the ground wire insulator respectively according to the altitude to perform the ground wire ice melting insulation coordination design. Thus, the ground wire ice melting insulation coordination design can ensure the safe and stable operation of the ground wire ice melting device under the conditions of high altitude, heavy ice cover, operating overvoltage and lightning overvoltage.

Description

Technical Field

[0001] The present disclosure relates to the technical field of disaster prevention and mitigation for power grids, and in particular to a ground wire ice melting insulation coordination design method, device, equipment, and medium. Background Art

[0002] Ice disasters are one of the most serious natural disasters affecting power systems. Ground wires, such as ultra-high voltage ground wires, are prone to ice buildup in winter, leading to severe accidents such as ground wire breakage and conductor-to-ground discharge, seriously impacting the safe and stable operation of the power grid. By insulating the ground wires and simultaneously applying power to melt the ice, effective de-icing can be achieved.

[0003] However, UHV often passes through high-altitude areas with severe ice cover. During the operation of the conductors, high-amplitude operation and lightning overvoltage will be induced on the ground wire due to conductor operation, lightning, etc., which will endanger the safe and stable operation of the ground wire de-icing device. Therefore, how to achieve the insulation coordination design of high-altitude conductors without power outages and ground wire de-icing is a technical problem that needs to be solved urgently. Summary of the Invention

[0004] In order to solve the above technical problems, the present disclosure provides a ground wire ice melting insulation coordination design method, device, equipment and medium.

[0005] A first aspect of an embodiment of the present disclosure provides a ground wire ice melting insulation coordination design method, comprising:

[0006] Obtaining ice melting environment data and the length of the ground wire ice melting, and determining the DC current required for the ground wire ice melting device to melt ice based on the ice melting environment data;

[0007] Determine the DC voltage corresponding to the output end of the ground wire de-icing device based on the DC current and the length of the ground wire de-icing;

[0008] determining an operation overvoltage threshold and a lightning overvoltage threshold at a target location corresponding to the ground wire ice melting device based on the DC voltage;

[0009] Determining a first parameter corresponding to an AC lightning arrester located on the power supply side corresponding to the ground wire de-icing device and a second parameter corresponding to a DC lightning arrester located at the output end of the ground wire de-icing device based on an operation overvoltage threshold and a lightning overvoltage threshold;

[0010] Obtaining the altitude of the ground wire corresponding to the ground wire de-icing device, and determining a first insulation distance corresponding to the ground wire de-icing device and a second insulation distance corresponding to the ground wire insulator based on the altitude;

[0011] The ground wire ice melting insulation coordination design is performed based on the DC voltage, the operating overvoltage threshold, the lightning overvoltage threshold, the first parameter, the second parameter, the first insulation distance and the second insulation distance.

[0012] A second aspect of an embodiment of the present disclosure provides a ground wire ice melting insulation coordination design device, comprising:

[0013] A DC current determination module is used to obtain ice melting environment data and the length of the ground wire ice melting, and determine the DC current required for the ground wire ice melting device to melt ice based on the ice melting environment data;

[0014] A DC voltage determination module, configured to determine a DC voltage corresponding to an output end of the ground wire de-icing device based on the DC current and the length of the ground wire de-icing device;

[0015] an overvoltage determination module, configured to determine an operation overvoltage threshold and a lightning overvoltage threshold at a target position corresponding to the ground wire ice melting device based on the DC voltage;

[0016] an arrester parameter determination module, configured to determine, based on an operational overvoltage threshold and a lightning overvoltage threshold, a first parameter corresponding to an AC arrester located on the power supply side corresponding to the ground wire de-icing device, and a second parameter corresponding to a DC arrester located at the output end of the ground wire de-icing device;

[0017] an insulation distance determination module, configured to obtain the altitude of the ground wire corresponding to the ground wire de-icing device, and determine a first insulation distance corresponding to the ground wire de-icing device and a second insulation distance corresponding to the ground wire insulator based on the altitude;

[0018] The ground wire ice melting insulation coordination design module is used to design the ground wire ice melting insulation coordination based on DC voltage, switching overvoltage threshold, lightning overvoltage threshold, first parameter, second parameter, first insulation distance and second insulation distance.

[0019] A third aspect of the present disclosure provides an electronic device, including:

[0020] processor;

[0021] a memory for storing executable instructions;

[0022] The processor is used to read executable instructions from the memory and execute the executable instructions to implement the ground wire ice melting insulation coordination design method provided by the first aspect above.

[0023] A fourth aspect of an embodiment of the present disclosure provides a computer-readable storage medium storing a computer program. When the computer program is executed by a processor, the processor implements the ground wire ice melting insulation coordination design method provided in the first aspect.

[0024] The technical solution provided by the embodiments of the present disclosure has the following advantages over the prior art:

[0025] The ground wire de-icing insulation coordination design method, device, equipment, and medium provided by the embodiments of the present disclosure can obtain de-icing environment data and the ground wire de-icing length, determine the DC current required for the ground wire de-icing device to melt ice based on the de-icing environment data, determine the DC voltage corresponding to the output end of the ground wire de-icing device based on the DC current and the ground wire de-icing length, determine the operating overvoltage threshold and lightning overvoltage threshold at the target location corresponding to the ground wire de-icing device based on the DC voltage, and determine the first parameter corresponding to the AC lightning arrester located on the power supply side corresponding to the ground wire de-icing device based on the operating overvoltage threshold and the lightning overvoltage threshold. and the second parameter corresponding to the DC lightning arrester located at the output end of the ground wire de-icing device, obtain the altitude of the ground wire corresponding to the ground wire de-icing device, determine the first insulation distance corresponding to the ground wire de-icing device and the second insulation distance corresponding to the ground wire insulator based on the altitude, and design the ground wire de-icing insulation coordination based on the DC voltage, the operating overvoltage threshold, the lightning overvoltage threshold, the first parameter, the second parameter, the first insulation distance and the second insulation distance. In this way, the safe and stable operation of the ground wire de-icing device without power outage of the conductor is achieved under the effects of high altitude, heavy icing, operating overvoltage and lightning overvoltage. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0027] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0028] Figure 1 This is a flow chart of a ground wire ice melting insulation coordination design method provided by an embodiment of the present disclosure;

[0029] Figure 2 This is a schematic diagram of the overall circuit structure of a ground wire ice melting device provided by an embodiment of the present disclosure;

[0030] Figure 3 is a flow chart of a method for determining insulation distance provided by an embodiment of the present disclosure;

[0031] Figure 4 This is a structural diagram of a ground wire ice melting insulation coordination design device provided by an embodiment of the present disclosure;

[0032] Figure 5 It is a structural diagram of an electronic device provided by an embodiment of the present disclosure. DETAILED DESCRIPTION

[0033] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features therein can be combined with each other in the absence of conflict.

[0034] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.

[0035] It should be understood that the various steps described in the method embodiments of the present disclosure may be performed in different orders and / or in parallel. In addition, the method embodiments may include additional steps and / or omit the steps shown. The scope of the present disclosure is not limited in this respect.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0037] It should be noted that the modifications of "one" and "multiple" mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, they should be understood as "one or more".

[0038] Typically, UHV conductors often traverse high-altitude, heavily icy areas. During conductor operation, high-amplitude voltages and lightning surges can be induced on the ground wire due to conductor handling, lightning, and other factors, jeopardizing the safe and stable operation of ground wire de-icing devices. Therefore, achieving insulation coordination for de-icing ground wires without power outages on high-altitude conductors is an urgent technical challenge. To address this issue, the present disclosure provides a method for designing insulation coordination for de-icing ground wires. This method is described below with reference to specific examples.

[0039] Figure 1This is a flow chart of a ground wire ice melting insulation coordination design method provided by an embodiment of the present disclosure. The method can be executed by a ground wire ice melting insulation coordination design device. The ground wire ice melting insulation coordination design device can be implemented in software and / or hardware. The ground wire ice melting insulation coordination design device can be configured in an electronic device, such as a server or a terminal, wherein the terminal specifically includes a mobile phone, a computer or a tablet computer, etc.

[0040] like Figure 1 As shown, the ground wire ice melting insulation coordination design method provided in this embodiment includes the following steps.

[0041] S110 : Obtain ice-melting environment data and a ground wire ice-melting length, and determine a DC current required for a ground wire ice-melting device to melt ice based on the ice-melting environment data.

[0042] In the embodiment of the present disclosure, the ice melting environment data may include the corresponding ambient temperature T (unit: degrees Celsius, T<0) and wind speed V (unit: meter / second) during ice melting.

[0043] The ground wire ice melting length is the length of the ground wire that needs to be melted.

[0044] Specifically, in response to executing the ground wire ice melting insulation coordination design, the electronic device can obtain ice melting environment data and the ground wire ice melting length from a preset database, and calculate according to a preset formula used to characterize the correspondence between the ice melting environment data and the DC current required for ice melting to obtain the DC current required for ice melting.

[0045] The specific calculation formula for DC current is as follows:

[0046]

[0047] Where I is the DC current required by the ground wire ice melting device to melt ice; T is the ambient temperature; and V is the wind speed.

[0048] Figure 2 This is a schematic diagram of the overall circuit structure of a ground wire ice melting device provided by an embodiment of the present disclosure. Figure 2 As shown, the power supply side 10 provides electrical energy for the ground wire de-icing device, including outputting an AC voltage; an AC lightning arrester 40 is provided on the power supply side, and the power supply side 10 is connected to a transformer 20. The transformer 20 is used to convert the AC voltage provided by the power supply side 10 into the AC voltage required for de-icing; the output end of the transformer 20 is connected to a rectifier 30. The rectifier 30 is used to convert the AC voltage output by the transformer 20 into a DC voltage and output it; a DC lightning arrester 50-1 and a DC lightning arrester 50-2 are provided at the output end of the rectifier; a ground wire insulator 70 is provided between the ground wire and the pole tower 60. The ground wire insulator 70 is used to prevent the ground wire and the pole tower 60 from short-circuiting.

[0049] S120: Determine a DC voltage corresponding to an output end of the ground wire ice melting device based on the DC current and the length of the ground wire ice melting device.

[0050] In an embodiment of the present disclosure, the ground wire ice melting device may include a transformer and a rectifier, wherein the transformer may be an adjustable transformer.

[0051] The DC voltage corresponding to the output end of the ground wire ice melting device can be understood as the output end of the rectifier of the ground wire ice melting device.

[0052] Specifically, after obtaining the DC current required for ice melting, the electronic device calculates the DC voltage corresponding to the output end of the ground wire ice melting device according to the corresponding relationship between the DC current, the ground wire ice melting length and the DC voltage.

[0053] The calculation formula for the DC voltage corresponding to the output end of the ground wire ice melting device is as follows:

[0054] U d =I*1.632*L

[0055] Among them, U d is the DC voltage at the output end of the ground wire ice melting device; I is the DC current required by the ground wire ice melting device to melt ice; L is the length of the ground wire ice melting device.

[0056] S130: Determine an operation overvoltage threshold and a lightning overvoltage threshold at a target location corresponding to the ground wire ice melting device based on the DC voltage.

[0057] In the embodiment of the present disclosure, the target location includes the power supply side corresponding to the ground wire ice melting device and the outlet end of the rectifier.

[0058] Specifically, the electronic device determines a first preset relationship between the DC voltage and the first operating overvoltage and the first lightning overvoltage corresponding to the outlet end of the rectifier based on the insulation strength of the ground wire ice melting device, and at the same time determines the output voltage on the power supply side based on the DC voltage, and determines a second preset relationship between the second operating overvoltage and the second lightning overvoltage corresponding to the power supply side based on the power supply side output voltage, and determines the operating overvoltage threshold and the lightning overvoltage threshold at the target position based on the first preset relationship and the second preset relationship, that is, the first operating overvoltage threshold and the first lightning overvoltage threshold corresponding to the outlet end of the rectifier and the second operating overvoltage threshold and the second lightning overvoltage threshold corresponding to the power supply side.

[0059] S140: Determine a first parameter corresponding to an AC lightning arrester located at a power supply side corresponding to the ground wire de-icing device and a second parameter corresponding to a DC lightning arrester located at an output end of the ground wire de-icing device based on an operation overvoltage threshold and a lightning overvoltage threshold.

[0060] In the embodiment of the present disclosure, the first parameter includes a first residual voltage threshold corresponding to the AC lightning arrester under the action of an operational overcurrent, a second residual voltage threshold corresponding to the action of a lightning current, and a current-carrying capacity under a lightning current impulse of a preset waveform. The first residual voltage threshold is less than or equal to the operational overvoltage threshold corresponding to the AC lightning arrester, i.e., the second operational overvoltage threshold, and the second residual voltage threshold is less than or equal to the lightning overvoltage threshold corresponding to the AC lightning arrester, i.e., the second lightning overvoltage threshold.

[0061] The second parameters include the third residual voltage threshold corresponding to the DC lightning arrester under the action of operational overcurrent, the fourth residual voltage threshold corresponding to the action of lightning current, and the target current-carrying capacity under the lightning current impact of a preset waveform. The third residual voltage threshold is less than or equal to the operational overvoltage threshold corresponding to the DC lightning arrester, that is, the first operational overvoltage threshold, and the fourth residual voltage threshold is less than or equal to the lightning overvoltage threshold corresponding to the DC lightning arrester, that is, the first lightning overvoltage threshold.

[0062] The AC lightning arrester may be an AC gapless lightning arrester; and the DC lightning arrester may be a DC gapless lightning arrester.

[0063] Specifically, after determining the operating overvoltage threshold and the lightning overvoltage threshold, the electronic device determines a first residual voltage threshold corresponding to the AC arrester under the action of an operating overcurrent and a second residual voltage threshold corresponding to the AC arrester under the action of a lightning current based on the corresponding relationship between the operating overvoltage threshold and the lightning overvoltage threshold corresponding to the AC arrester and the residual voltage of the arrester, determines the type of the AC arrester based on the first residual voltage threshold and the second residual voltage threshold, and determines the current carrying capacity of the AC arrester based on the type of the AC arrester. Simultaneously, based on the corresponding relationship between the operating overvoltage threshold and the lightning overvoltage threshold corresponding to the DC arrester and the residual voltage of the arrester, determines a third residual voltage threshold corresponding to the DC arrester under the action of an operating overcurrent and a fourth residual voltage threshold corresponding to the DC arrester under the action of a lightning current, determines the type of the DC arrester based on the third residual voltage threshold and the fourth residual voltage threshold, and determines the target current carrying capacity of the DC arrester based on the type of the DC arrester.

[0064] In some embodiments, taking the installation of a 10kV AC gapless lightning arrester on the AC power supply side of a 10kV voltage level as an example, the DC 1mA reference voltage range of the 10kV AC gapless lightning arrester is between 20-25kV. When the operating overvoltage and lightning current are transmitted along the voltage input end to the rectifier of the ground wire ice melting device, under the action of the 10kA operating overcurrent, the residual voltage is less than or equal to 30kV, and under the action of the 20kA lightning current, the residual voltage is less than or equal to 40kV. The entire 4 / 10μs lightning protection and operating overvoltage protection current-carrying capacity should be greater than or equal to 150kA.

[0065] Taking the installation of a 10kV DC gapless lightning arrester at the outlet of the ground wire de-icing device as an example, the DC 1mA reference voltage range of the 10kV DC gapless lightning arrester is between 20-25kV. When the operating overcurrent or lightning current propagates along the de-icing ground wire to the DC end of the ground wire de-icing device, under the action of the 10kA operating overcurrent, the residual voltage is less than or equal to 30kV, and under the action of the 20kA lightning current, the residual voltage is less than or equal to 40kV. Since the DC output end, that is, the output end of the ground wire de-icing device, is directly connected to the ground wire, it needs to withstand the ground wire induced overvoltage and lightning overvoltage. Therefore, its entire 4 / 10μs current-carrying capacity should be greater than or equal to 200kA.

[0066] S150: Obtain the altitude of the ground wire corresponding to the ground wire de-icing device, and determine a first insulation distance corresponding to the ground wire de-icing device and a second insulation distance corresponding to the ground wire insulator based on the altitude.

[0067] Specifically, the electronic device can obtain the altitude of the ground wire corresponding to the ground wire ice melting device from a preset database, and determine the target insulation distance between the ground wire and the pole tower based on the DC voltage, and determine the ratio between the first insulation distance and the second insulation distance and the target insulation distance based on the altitude and a preset ratio calculation formula, and then calculate the first insulation distance and the second insulation distance based on the ratio and the target insulation distance.

[0068] S160. Design ground wire ice melting insulation coordination based on the DC voltage, the operating overvoltage threshold, the lightning overvoltage threshold, the first parameter, the second parameter, the first insulation distance, and the second insulation distance.

[0069] Specifically, after obtaining the DC voltage, the operating overvoltage threshold, the lightning overvoltage threshold, the first parameter, the second parameter, the first insulation distance and the second insulation distance, the electronic device performs ground wire de-icing insulation coordination design based on these parameters, so as to ensure the safe and stable operation of the ground wire de-icing device without power outage of the conductor under high altitude, heavy icing, operating overvoltage and lightning overvoltage.

[0070] In the disclosed embodiments, ice melting environment data and the length of ground wire ice melt can be obtained, and the DC current required for a ground wire ice melting device to melt ice can be determined based on the ice melting environment data. The DC voltage corresponding to the output terminal of the ground wire ice melting device can be determined based on the DC current and the length of ground wire ice melt. The operating overvoltage threshold and lightning overvoltage threshold at a target location corresponding to the ground wire ice melting device can be determined based on the DC voltage. A first parameter corresponding to an AC lightning arrester located on the power supply side corresponding to the ground wire ice melting device and a second parameter corresponding to a DC lightning arrester located at the output terminal of the ground wire ice melting device can be determined based on the operating overvoltage threshold and the lightning overvoltage threshold. The altitude of the ground wire corresponding to the ground wire ice melting device can be obtained, and a first insulation distance corresponding to the ground wire ice melting device and a second insulation distance corresponding to the ground wire insulator can be determined based on the altitude. The ground wire ice melting device insulation coordination can be designed based on the DC voltage, the operating overvoltage threshold, the lightning overvoltage threshold, the first parameter, the second parameter, the first insulation distance, and the second insulation distance. This ensures safe and stable operation of the ground wire ice melting device without power outages under conditions of high altitude, heavy icing, operating overvoltage, and lightning overvoltage.

[0071] Based on the above-mentioned embodiments of the present disclosure, determining the operating overvoltage threshold and the lightning overvoltage threshold at the target position corresponding to the ground wire de-icing device based on the DC voltage may specifically include: calculating the AC voltage at the output end of the transformer of the ground wire de-icing device based on the DC voltage; determining the first operating overvoltage threshold and the first lightning overvoltage threshold corresponding to the outlet end of the rectifier based on the DC voltage; and determining the second operating overvoltage threshold and the second lightning overvoltage threshold corresponding to the power supply side based on the AC voltage.

[0072] Specifically, based on the correspondence between the DC voltage at the output end of the ground wire ice melting device and the AC voltage at the output end of the transformer of the ground wire ice melting device, the AC voltage at the output end of the transformer of the ground wire ice melting device can be calculated, wherein the DC voltage at the output end of the ground wire ice melting device is equal to 1.414 times the AC voltage at the output end of the transformer.

[0073] In the embodiment of the present disclosure, the target AC voltage at the output end of the transformer of the ground wire de-icing device can be determined according to the DC voltage at the output end of the line de-icing device, thereby further ensuring the normal operation of the ground wire de-icing device.

[0074] In an embodiment of the present disclosure, determining a first operational overvoltage threshold and a first lightning overvoltage threshold corresponding to the outlet end of the rectifier based on the DC voltage may specifically include: calculating the product of the DC voltage and a first preset value to obtain a first target value, and determining the first target value as the first operational overvoltage threshold corresponding to the outlet end of the rectifier, wherein the first operational overvoltage at the outlet end of the rectifier is respectively less than or equal to the first target value, i.e., the first operational overvoltage threshold; calculating the product of the DC voltage and a second preset value to obtain a second target value, and determining the second target value as the first lightning overvoltage threshold corresponding to the outlet end of the rectifier, wherein the first lightning overvoltage at the outlet end of the rectifier is respectively less than or equal to the second target value, i.e., the first lightning overvoltage threshold.

[0075] Determining the second operating overvoltage threshold and the second lightning overvoltage threshold corresponding to the power supply side based on the AC voltage can specifically include: determining the output voltage of the power supply side based on the AC voltage; calculating the product of the output voltage of the power supply side and a third preset value to obtain a third target value, and determining the third target value as the second operating overvoltage threshold corresponding to the power supply side, wherein the second operating overvoltage on the power supply side is less than or equal to the second operating overvoltage threshold; calculating the product of the output voltage of the power supply side and a fourth preset value to obtain a fourth target value, and determining the fourth target value as the second lightning overvoltage threshold corresponding to the power supply side, wherein the second lightning overvoltage on the power supply side is less than or equal to the second lightning overvoltage threshold.

[0076] Among them, the first preset value, the second preset value, the third preset value and the fourth preset value are pre-set values ​​for determining the operating overvoltage and the lightning overvoltage respectively. The first preset value, the second preset value, the third preset value and the fourth preset value can also be set by themselves according to actual conditions and the insulation strength of the ground wire ice melting device, and are not limited here.

[0077] The first preset value may be 3, the second preset value may be 4; the third preset value may be 3, and the fourth preset value may be 4.

[0078] In an embodiment of the present disclosure, determining the power supply side output voltage based on the AC voltage may specifically include obtaining the transformation ratio between the power supply side threshold transformers, and determining the value obtained by dividing the AC voltage by the transformation ratio as the power supply side output voltage.

[0079] In some examples, taking the third preset value of 3, the fourth preset value of 4, and a 10 kV power supply side as an example, the switching overvoltage on the power supply side should be less than or equal to 30 kV, and the lightning overvoltage should be less than or equal to 40 kV. Taking the first preset value of 3 and the second preset value of 4 as an example, the switching overvoltage at the rectifier outlet should be less than or equal to 3 times the DC voltage at the rectifier outlet, and the lightning overvoltage should be less than or equal to 4 times the DC voltage at the rectifier outlet.

[0080] In the embodiment of the present disclosure, the operating overvoltage threshold and the lightning overvoltage threshold of the power supply side and the output end of the rectifier can be determined according to the DC voltage, thereby ensuring the insulation strength of the ground wire de-icing device.

[0081] In the embodiment of the present disclosure, determining the first insulation distance corresponding to the ground wire de-icing device and the second insulation distance corresponding to the ground wire insulator based on the altitude may specifically include: determining the target insulation distance between the ground wire and the tower based on the DC voltage and the thickness of the ground wire insulator; determining the ratio between the first insulation distance and the second insulation distance and the target insulation distance based on the altitude and a preset ratio calculation formula; and determining the product of the ratio and the target insulation distance as the first insulation distance corresponding to the ground wire de-icing device and the second insulation distance corresponding to the ground wire insulator. Figure 3 As shown, the target insulation distance between the ground wire and the tower is determined based on the DC voltage and the thickness of the ground wire insulator, and steps S310-S320 are specifically performed.

[0082] S310 : Determine the number of ground wire insulators based on a corresponding relationship between the number of ground wire insulators and the DC voltage.

[0083] In the disclosed embodiment, to prevent bridging of composite insulators caused by ice coating, resulting in a short circuit between the ground wire and the tower when the ice melts, the ground wire insulator should ensure that no external insulation flashover short circuit occurs under a 30mm ice coating thickness and a 20kV DC voltage; and effective breakdown under a 100kV lightning strike.

[0084] The ground wire insulator used between the ground wire and the tower can be a ceramic insulator or a glass insulator.

[0085] The corresponding relationship between the number of ground wire insulators and DC voltage is as follows:

[0086]

[0087] Among them, U d is the DC voltage at the output end of the ice melting device; n is the number of ground wire insulators.

[0088] S320. Determine the product of the number of ground wire insulators and the thickness of the ground wire insulators as the target insulation distance between the ground wire and the tower.

[0089] Specifically, after determining the number of ground wire insulators, the electronic device obtains the thickness of the ground wire insulators and determines the product of the thickness and the number of ground wire insulators as the target insulation distance between the ground wire and the tower.

[0090] S330: Determine the ratios of the first insulation distance, the second insulation distance, and the target insulation distance based on the altitude and a preset ratio calculation formula.

[0091] In the embodiment of the present disclosure, the preset ratio calculation formula is as follows:

[0092]

[0093] Where K is the ratio and H is the altitude.

[0094] S340: Determine the product of the ratio and the target insulation distance as the first insulation distance corresponding to the ground wire ice melting device and the second insulation distance corresponding to the ground wire insulator.

[0095] In the embodiment of the present disclosure, the first insulation distance corresponding to the ground wire de-icing device and the second insulation distance corresponding to the ground wire insulator can be determined according to the altitude, so as to ensure the insulation strength of the ground wire de-icing device of the ultra-high voltage line in high-altitude areas, and to ensure the safe and stable operation of the ground wire de-icing device without power outage of the conductor under the influence of high altitude, heavy icing, operational overvoltage and lightning overvoltage.

[0096] Figure 4 It is a structural schematic diagram of a ground wire ice melting insulation coordination design device provided by an embodiment of the present disclosure.

[0097] In the disclosed embodiments, the ground wire ice melting insulation coordination design device can be provided within an electronic device and can be understood as a functional module within the electronic device. Specifically, the electronic device can be a server or a terminal, where the terminal specifically includes a mobile phone, a computer, or a tablet computer, etc., without limitation herein.

[0098] like Figure 4 As shown, the ground wire ice melting insulation coordination design device 400 may include a DC current determination module 410, a DC voltage determination module 420, an overvoltage determination module 430, a lightning arrester parameter determination module 440, an insulation distance determination module 450 and a ground wire ice melting insulation coordination design module 460.

[0099] The DC current determination module 410 may be configured to obtain ice-melting environment data and the length of the ground wire ice-melting, and determine the DC current required by the ground wire ice-melting device to melt ice based on the ice-melting environment data.

[0100] The DC voltage determination module 420 may be configured to determine a DC voltage corresponding to an output end of the ground wire de-icing device based on the DC current and the length of the ground wire de-icing device.

[0101] The overvoltage determination module 430 may be configured to determine an operation overvoltage threshold and a lightning overvoltage threshold at a target location corresponding to the ground wire ice melting device based on the DC voltage.

[0102] The lightning arrester parameter determination module 440 can be used to determine the first parameter corresponding to the AC lightning arrester located on the power supply side corresponding to the ground wire de-icing device and the second parameter corresponding to the DC lightning arrester located at the output end of the ground wire de-icing device based on the operation overvoltage threshold and the lightning overvoltage threshold.

[0103] The insulation distance determination module 450 may be configured to obtain the altitude of the ground wire corresponding to the ground wire de-icing device, and determine a first insulation distance corresponding to the ground wire de-icing device and a second insulation distance corresponding to the ground wire insulator based on the altitude.

[0104] The ground wire ice melting insulation coordination design module 460 can be used to perform ground wire ice melting insulation coordination design based on DC voltage, operating overvoltage threshold, lightning overvoltage threshold, first parameter, second parameter, first insulation distance and second insulation distance.

[0105] In the disclosed embodiments, ice melting environment data and the length of ground wire ice melt can be obtained, and the DC current required for a ground wire ice melting device to melt ice can be determined based on the ice melting environment data. The DC voltage corresponding to the output terminal of the ground wire ice melting device can be determined based on the DC current and the length of ground wire ice melt. The operating overvoltage threshold and lightning overvoltage threshold at a target location corresponding to the ground wire ice melting device can be determined based on the DC voltage. A first parameter corresponding to an AC lightning arrester located on the power supply side corresponding to the ground wire ice melting device and a second parameter corresponding to a DC lightning arrester located at the output terminal of the ground wire ice melting device can be determined based on the operating overvoltage threshold and the lightning overvoltage threshold. The altitude of the ground wire corresponding to the ground wire ice melting device can be obtained, and a first insulation distance corresponding to the ground wire ice melting device and a second insulation distance corresponding to the ground wire insulator can be determined based on the altitude. The ground wire ice melting device insulation coordination can be designed based on the DC voltage, the operating overvoltage threshold, the lightning overvoltage threshold, the first parameter, the second parameter, the first insulation distance, and the second insulation distance. This ensures safe and stable operation of the ground wire ice melting device without power outages under conditions of high altitude, heavy icing, operating overvoltage, and lightning overvoltage.

[0106] In some embodiments of the present disclosure, the ground wire ice melting device includes a transformer and a rectifier, and the target location includes a power supply side corresponding to the ground wire ice melting device and an outlet end of the rectifier.

[0107] The overvoltage determination module 430 may be configured to calculate an AC voltage at an output terminal of a transformer of the ground wire ice melting device based on the DC voltage;

[0108] Determining a first operating overvoltage threshold and a first lightning overvoltage threshold corresponding to an outlet end of the rectifier based on the DC voltage;

[0109] A second operation overvoltage threshold and a second lightning overvoltage threshold corresponding to the power supply side are determined based on the AC voltage.

[0110] In some embodiments of the present disclosure, the overvoltage determination module 430 may be specifically configured to calculate the product of the DC voltage and a first preset value to obtain a first target value, and determine the first target value as a first operating overvoltage threshold corresponding to the outlet end of the rectifier, wherein the first operating overvoltage at the outlet end of the rectifier is less than or equal to the first operating overvoltage threshold;

[0111] The product of the DC voltage and the second preset value is calculated to obtain a second target value, and the second target value is determined as the first lightning overvoltage threshold corresponding to the outlet end of the rectifier. The first lightning overvoltage at the outlet end of the rectifier is less than or equal to the first lightning overvoltage threshold.

[0112] In some embodiments of the present disclosure, the overvoltage determination module 430 may also be specifically configured to determine the power supply side output voltage based on the AC voltage;

[0113] Calculating the product of the output voltage on the power supply side and a third preset value to obtain a third target value, and determining the third target value as a second operating overvoltage threshold corresponding to the power supply side, wherein the second operating overvoltage on the power supply side is less than or equal to the second operating overvoltage threshold;

[0114] The product of the output voltage on the power supply side and the fourth preset value is calculated to obtain a fourth target value, and the fourth target value is determined as the second lightning overvoltage threshold corresponding to the power supply side, wherein the second lightning overvoltage on the power supply side is less than or equal to the second lightning overvoltage threshold.

[0115] In some embodiments of the present disclosure, the first parameter includes a first residual voltage threshold corresponding to the AC lightning arrester under the action of an operational overcurrent, a second residual voltage threshold corresponding to the action of a lightning current, and a current-carrying capacity under a lightning current impulse of a preset waveform. The first residual voltage threshold is less than or equal to the operational overvoltage threshold corresponding to the AC lightning arrester, and the second residual voltage threshold is less than or equal to the lightning overvoltage threshold corresponding to the AC lightning arrester.

[0116] In some embodiments of the present disclosure, the insulation distance determination module 450 may be specifically configured to determine a target insulation distance between the ground wire and the tower based on the DC voltage and the thickness of the ground wire insulator;

[0117] Determine the ratio between the first insulation distance and the second insulation distance and the target insulation distance based on the altitude and a preset ratio calculation formula;

[0118] The product of the ratio and the target insulation distance is determined as a first insulation distance corresponding to the ground wire ice melting device and a second insulation distance corresponding to the ground wire insulator.

[0119] In some embodiments of the present disclosure, the insulation distance determination module 450 may also be specifically configured to determine the number of ground wire insulators based on a corresponding relationship between the number of ground wire insulators and the DC voltage;

[0120] The target insulation distance is determined as the product of the number of ground wire insulators and the thickness of the ground wire insulators.

[0121] It should be noted that Figure 4 The ground wire ice melting insulation coordination design device 400 shown can execute each step in the above method embodiment and realize each process and effect in the above method embodiment, which will not be described in detail here.

[0122] Figure 5 It is a structural diagram of an electronic device provided by an embodiment of the present disclosure.

[0123] In the embodiments of the present disclosure, Figure 5 The electronic device shown may be a server or a terminal, wherein the terminal specifically includes a mobile phone, a computer, or a tablet computer, etc., which is not limited here.

[0124] like Figure 5 As shown, the electronic device may include a processor 510 and a memory 520 storing computer program instructions.

[0125] Specifically, the processor 510 may include a central processing unit (CPU), or an application specific integrated circuit (ASIC), or may be configured to implement one or more integrated circuits of the embodiments of the present disclosure.

[0126] Memory 520 may include a large-capacity memory for information or instructions. By way of example, and not limitation, memory 520 may include a hard disk drive (HDD), a floppy disk drive, flash memory, an optical disk, a magneto-optical disk, magnetic tape, or a Universal Serial Bus (USB) drive, or a combination of two or more of these. Where appropriate, memory 520 may include removable or non-removable (or fixed) media. Where appropriate, memory 520 may be internal or external to the integrated gateway device. In certain embodiments, memory 520 is non-volatile solid-state memory. In certain embodiments, memory 520 includes read-only memory (ROM). Where appropriate, the ROM may be mask-programmed ROM, programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable PROM (EEPROM), electrically alterable ROM (EAROM), or flash memory, or a combination of two or more of these.

[0127] The processor 510 reads and executes computer program instructions stored in the memory 520 to perform the steps of the ground wire ice melting insulation coordination design method provided in the embodiment of the present disclosure.

[0128] In one example, the electronic device may further include a transceiver 530 and a bus 540. Figure 5 As shown, the processor 510 , the memory 520 and the transceiver 530 are connected via a bus 540 and communicate with each other.

[0129] The bus 540 includes hardware, software, or both. By way of example and not limitation, the bus may include an Accelerated Graphics Port (AGP) or other graphics bus, an Extended Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), a Hyper Transport (HT) interconnect, an Industrial Standard Architecture (ISA) bus, an InfiniBand interconnect, a Low Pin Count (LPC) bus, a memory bus, a MicroChannel Architecture (MCA) bus, a Peripheral Component Interconnect (PCI) bus, a PCI-Express (PCI-X) bus, a Serial Advanced Technology Attachment (SATA) bus, a Video Electronics Standards Association Local Bus (VLB) bus, or other suitable buses, or a combination of two or more of these. Where appropriate, the bus 540 may include one or more buses.

[0130] The embodiments of the present disclosure further provide a computer-readable storage medium, which may store a computer program. When the computer program is executed by a processor, the processor implements the ground wire ice melting insulation coordination design method provided by the embodiments of the present disclosure.

[0131] The aforementioned storage medium may, for example, include a memory 520 containing computer program instructions. The aforementioned instructions may be executed by the processor 510 of the electronic device to implement the ground wire ice melting insulation coordination design method provided in the embodiments of the present disclosure. Alternatively, the storage medium may be a non-transitory computer-readable storage medium, such as a ROM, random access memory (RAM), compact disc read-only memory (CD-ROM), magnetic tape, floppy disk, or optical data storage device.

[0132] The foregoing description is intended only to provide specific embodiments of the present disclosure, intended to enable those skilled in the art to understand and implement the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure is not intended to be limited to the embodiments described herein, but rather to be construed in the broadest manner consistent with the principles and novel features disclosed herein.

Claims

1. A ground wire ice melting insulation coordination design method, characterized in that: include: Obtaining ice melting environment data and a ground wire ice melting length, and determining a DC current required for a ground wire ice melting device to melt ice based on the ice melting environment data; Determining a DC voltage corresponding to an output end of the ground wire ice melting device based on the DC current and the ground wire ice melting length; determining an operation overvoltage threshold and a lightning overvoltage threshold at a target position corresponding to the ground wire ice melting device based on the DC voltage; Determining a first parameter corresponding to an AC lightning arrester located at a power supply side corresponding to the ground wire de-icing device and a second parameter corresponding to a DC lightning arrester located at an output end of the ground wire de-icing device based on the operational overvoltage threshold and the lightning overvoltage threshold; Obtaining the altitude of the ground wire corresponding to the ground wire de-icing device, and determining a first insulation distance corresponding to the ground wire de-icing device and a second insulation distance corresponding to the ground wire insulator based on the altitude; Ground wire ice melting insulation coordination design is performed based on the DC voltage, the operating overvoltage threshold, the lightning overvoltage threshold, the first parameter, the second parameter, the first insulation distance, and the second insulation distance.

2. The method according to claim 1, characterized in that The ground wire ice melting device includes a transformer and a rectifier, and the target location includes the power supply side corresponding to the ground wire ice melting device and the outlet end of the rectifier; The determining, based on the DC voltage, an operation overvoltage threshold and a lightning overvoltage threshold at a target position corresponding to the ground wire ice melting device includes: Calculating an AC voltage at an output end of a transformer of the ground wire ice melting device based on the DC voltage; determining a first operation overvoltage threshold and a first lightning overvoltage threshold corresponding to an outlet end of the rectifier based on the DC voltage; A second operation overvoltage threshold and a second lightning overvoltage threshold corresponding to the power supply side are determined based on the AC voltage.

3. The method according to claim 2, characterized in that The determining, based on the DC voltage, a first operation overvoltage threshold and a first lightning overvoltage threshold corresponding to the outlet end of the rectifier includes: Calculating the product of the DC voltage and a first preset value to obtain a first target value, and determining the first target value as a first operating overvoltage threshold corresponding to the outlet end of the rectifier, wherein the first operating overvoltage at the outlet end of the rectifier is less than or equal to the first operating overvoltage threshold; The product of the DC voltage and a second preset value is calculated to obtain a second target value, and the second target value is determined as the first lightning overvoltage threshold corresponding to the outlet end of the rectifier, and the first lightning overvoltage at the outlet end of the rectifier is less than or equal to the first lightning overvoltage threshold.

4. The method according to claim 2, characterized in that The determining, based on the AC voltage, a second operation overvoltage threshold and a second lightning overvoltage threshold corresponding to the power supply side includes: determining the power supply side output voltage based on the AC voltage; Calculating the product of the power supply side output voltage and a third preset value to obtain a third target value, and determining the third target value as a second operating overvoltage threshold corresponding to the power supply side, wherein the second operating overvoltage of the power supply side is less than or equal to the second operating overvoltage threshold; The product of the output voltage of the power supply side and a fourth preset value is calculated to obtain a fourth target value, and the fourth target value is determined as the second lightning overvoltage threshold corresponding to the power supply side, wherein the second lightning overvoltage on the power supply side is less than or equal to the second lightning overvoltage threshold.

5. The method according to claim 1, wherein The first parameter includes the first residual voltage threshold corresponding to the AC lightning arrester under the action of operational overcurrent, the second residual voltage threshold corresponding to the action of lightning current, and the current-carrying capacity under the lightning current impact of a preset waveform. The first residual voltage threshold is less than or equal to the operational overvoltage threshold corresponding to the AC lightning arrester, and the second residual voltage threshold is less than or equal to the lightning overvoltage threshold corresponding to the AC lightning arrester.

6. The method according to claim 1, characterized in that The determining, based on the altitude, a first insulation distance corresponding to the ground wire de-icing device and a second insulation distance corresponding to the ground wire insulator includes: determining a target insulation distance between the ground wire and the tower based on the DC voltage and the thickness of the ground wire insulator; Determining a ratio between the first insulation distance and the second insulation distance and the target insulation distance based on the altitude and a preset ratio calculation formula; The product of the ratio and the target insulation distance is determined as a first insulation distance corresponding to the ground wire ice melting device and a second insulation distance corresponding to the ground wire insulator.

7. The method according to claim 6, characterized in that The determining of the target insulation distance between the ground wire and the tower based on the DC voltage and the thickness of the ground wire insulator includes: Determining the number of the ground wire insulators based on a correspondence between the number of the ground wire insulators and the DC voltage; The product of the number of the ground wire insulators and the thickness of the ground wire insulators is determined as the target insulation distance.

8. A ground wire ice melting insulation coordination design device, characterized in that: include: a DC current determination module, configured to obtain ice-melting environment data and a ground wire ice-melting length, and determine a DC current required for the ground wire ice-melting device to melt ice based on the ice-melting environment data; a DC voltage determining module, configured to determine a DC voltage corresponding to an output end of the ground wire ice melting device based on the DC current and the ground wire ice melting length; an overvoltage determination module, configured to determine an operation overvoltage threshold and a lightning overvoltage threshold at a target position corresponding to the ground wire ice melting device based on the DC voltage; an arrester parameter determination module, configured to determine, based on the operational overvoltage threshold and the lightning overvoltage threshold, a first parameter corresponding to an AC arrester located on the power supply side corresponding to the ground wire de-icing device, and a second parameter corresponding to a DC arrester located at the output end of the ground wire de-icing device; an insulation distance determination module, configured to obtain an altitude at which a ground wire corresponding to the ground wire de-icing device is located, and determine a first insulation distance corresponding to the ground wire de-icing device and a second insulation distance corresponding to a ground wire insulator based on the altitude; A ground wire ice melting insulation coordination design module is used to perform ground wire ice melting insulation coordination design based on the DC voltage, the operating overvoltage threshold, the lightning overvoltage threshold, the first parameter, the second parameter, the first insulation distance and the second insulation distance.

9. An electronic device, characterized in that: include: processor; a memory for storing executable instructions; The processor is configured to read the executable instructions from the memory and execute the executable instructions to implement the ground wire ice melting insulation coordination design method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that The storage medium stores a computer program. When the computer program is executed by a processor, the processor implements the ground wire ice melting insulation coordination design method according to any one of claims 1 to 7.

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