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

Abstract

The invention relates to a ground wire ice melting insulation cooperation design method and device, equipment and a medium. The ground wire ice-melting insulation cooperation design method comprises the following steps: determining a direct current required by ice melting of a ground wire ice-melting device based on ice-melting environment data; determining a direct current voltage of the output end of the ground wire ice melting device based on the direct current and the ground wire ice melting length; determining an operation overvoltage threshold and a lightning stroke overvoltage threshold at a target position corresponding to the ground wire ice melting device based on the DC voltage; determining a parameter of the lightning arrester based on the operating overvoltage threshold and the lightning stroke overvoltage threshold; meanwhile, second insulation distances corresponding to the ground wire ice melting device and the ground wire insulator respectively are determined according to the altitude, so that ground wire ice melting insulation matching design is carried out. And safe and stable operation of the ground wire ice melting device can be ensured under the action of high altitude, re-icing, operation overvoltage and lightning stroke overvoltage through ground wire ice melting insulation matching design.

Description

Technical Field

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

[0002] At present, ice disasters are one of the more serious natural disasters for power systems. Among them, ground wires, such as UHV ground wires, are prone to ice in winter, leading to malignant accidents such as ground wire breakage and conductor-to-ground discharge, which seriously affect the safe and stable operation of the power grid. By insulating the ground wire and simultaneously energizing it to melt the ice, effective de-icing of the ground wire can be achieved.

[0003] However, UHV often passes through high-altitude severely iced areas. During the operation of the conductors, high-amplitude operations and lightning overvoltages will be induced on the ground wires due to conductor operation, lightning, etc., endangering the safe and stable operation of the ground wire de-icing device. Therefore, how to achieve insulation coordination design for ground wire de-icing without power outages on high-altitude conductors 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 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 ground wire de-icing length;

[0008] 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;

[0009] 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;

[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 is designed based on DC voltage, operating overvoltage threshold, lightning overvoltage threshold, first parameter, second parameter, first insulation distance and second insulation distance.

[0012] A second aspect of the disclosed embodiment 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 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, used to determine a DC voltage corresponding to an output end of a ground wire de-icing device based on a DC current and a ground wire de-icing length;

[0015] An overvoltage determination module, used 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] A lightning arrester parameter determination module, used to determine a first parameter corresponding to an AC lightning arrester located at a power supply side corresponding to a 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;

[0017] An insulation distance determination module, used 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, operation overvoltage threshold, lightning overvoltage threshold, first parameter, second parameter, first insulation distance and second insulation distance.

[0019] A third aspect of the embodiments 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 in the first aspect.

[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] Compared with the prior art, the technical solution provided by the embodiments of the present disclosure has the following advantages:

[0025] The ground wire ice melting insulation coordination design method, device, equipment and medium provided by the embodiments of the present disclosure can obtain ice melting environment data and ground wire ice melting length, determine the DC current required for the ground wire ice melting device to melt ice based on the ice melting environment data, determine the DC voltage corresponding to the output end of the ground wire ice melting device based on the DC current and the ground wire ice melting length, determine the operation overvoltage threshold and lightning overvoltage threshold at the target position corresponding to the ground wire ice melting 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 ice melting device based on the operation overvoltage threshold and the lightning overvoltage threshold. and a second parameter corresponding to the DC lightning arrester located at the output end of the ground wire de-icing device, the altitude of the ground wire corresponding to the ground wire de-icing device is obtained, the first insulation distance corresponding to the ground wire de-icing device and the second insulation distance corresponding to the ground wire insulator are determined based on the altitude, and the ground wire de-icing 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, thereby achieving 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. 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 invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0028] Figure 1 It 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 It 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 It is a structural schematic 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 schematic 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 in the embodiments can be combined with each other without 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 article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0037] It should be noted that the modifications of "one" and "plurality" 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, it should be understood as "one or more".

[0038] Usually, UHV often passes through high-altitude severely icy areas. During the operation of the conductor, 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 ground wire de-icing without power outage of high-altitude conductors is a technical problem that needs to be solved urgently. In response to this problem, the embodiment of the present disclosure provides a ground wire de-icing insulation coordination design method, which is introduced in conjunction with specific embodiments below.

[0039] Figure 1It 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, 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.

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

[0043] The ground wire de-icing length is the length of the ground wire that needs to be de-iced.

[0044] Specifically, the electronic device can obtain ice melting environment data and ground wire ice melting length from a preset database in response to executing the ground wire ice melting insulation coordination design, and calculate according to a preset formula for characterizing 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] Wherein, I is the DC current required by the ground wire ice melting device to melt ice; T is the ambient temperature; V is the wind speed.

[0048] Figure 2 is a schematic diagram of the overall circuit structure of a ground wire ice melting device provided by an embodiment of the present disclosure, such as Figure 2 As shown, the power supply side 10 provides electric energy for the ground wire ice melting device, including outputting 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, and the transformer 20 is used to convert the AC voltage provided by the power supply side 10 into the AC voltage required for ice melting; the output end of the transformer 20 is connected to a rectifier 30, and 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, and 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 ground wire ice-melting length.

[0050] In the 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 according to the corresponding relationship between the DC current and the ground wire ice melting length and the DC voltage to obtain the DC voltage corresponding to the output end of the ground wire ice melting device.

[0053] The calculation formula of 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.

[0056] S130: 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.

[0057] In the embodiment of the present disclosure, the target position 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, determines a second preset relationship between the second operating overvoltage and the second lightning overvoltage corresponding to the power supply side based on the output voltage on the power supply side, and determines the operating overvoltage threshold and the lightning overvoltage threshold at the target position, i.e., 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, based on the first preset relationship and the second preset relationship, respectively.

[0059] S140, 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 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 operating 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 operating overvoltage threshold corresponding to the AC lightning arrester, i.e., the second operating 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] Among them, the AC lightning arrester can be an AC gapless lightning arrester; and the DC lightning arrester can be a DC gapless lightning arrester.

[0063] Specifically, after determining the operation overvoltage threshold and the lightning overvoltage threshold, the electronic device determines the first residual voltage threshold corresponding to the AC lightning arrester under the operation overcurrent and the second residual voltage threshold corresponding to the lightning current according to the corresponding relationship between the operation overvoltage threshold and the lightning overvoltage threshold corresponding to the AC lightning arrester and the residual voltage of the lightning arrester, determines the type of the AC lightning arrester according to the first residual voltage threshold and the second residual voltage threshold, and determines the current carrying capacity of the AC lightning arrester based on the type of the AC lightning arrester. At the same time, according to the corresponding relationship between the operation overvoltage threshold and the lightning overvoltage threshold corresponding to the DC lightning arrester and the residual voltage of the lightning arrester, determines the third residual voltage threshold corresponding to the DC lightning arrester under the operation overcurrent and the fourth residual voltage threshold corresponding to the DC lightning arrester under the lightning current, determines the type of the DC lightning arrester according to the third residual voltage threshold and the fourth residual voltage threshold, and determines the target current carrying capacity of the DC lightning arrester based on the type of the DC lightning 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 according to the DC voltage, and determine the ratio between the first insulation distance and the second insulation distance and the target insulation distance according to the altitude and a preset ratio calculation formula, and then calculate the first insulation distance and the second insulation distance according to the ratio and the target insulation distance.

[0068] S160. Design the 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 ice melting insulation coordination design according to these parameters, so as to ensure the safe and stable operation of the ground wire ice melting device without power outage of the conductor under high altitude, heavy icing, operating overvoltage and lightning overvoltage.

[0070] In the embodiment of the present disclosure, ice melting environment data and the length of ground wire ice melting can be obtained, the DC current required for the ground wire ice melting device to melt ice is determined based on the ice melting environment data, the DC voltage corresponding to the output end of the ground wire ice melting device is determined based on the DC current and the length of ground wire ice melting, the operating overvoltage threshold and the lightning overvoltage threshold at the target position corresponding to the ground wire ice melting device are determined based on the DC voltage, the first parameter corresponding to the AC lightning arrester located on the power supply side corresponding to the ground wire ice melting device and the second parameter corresponding to the DC lightning arrester located at the output end of the ground wire ice melting device are 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 is obtained, the first insulation distance corresponding to the ground wire ice melting device and the second insulation distance corresponding to the ground wire insulator are determined based on the altitude, and 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, thereby achieving safe and stable operation of the ground wire ice melting device without power outage of the conductor under high altitude, repeated icing, and the effects of operating overvoltage and lightning overvoltage.

[0071] On the basis of 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 ice melting device based on the DC voltage can specifically include: calculating the AC voltage at the transformer output end of the ground wire ice melting 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, according to 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 disclosed embodiment, the target AC voltage at the output end of the transformer of the ground wire ice melting device can be determined according to the DC voltage at the output end of the ground wire ice melting device, thereby further ensuring the normal operation of the ground wire ice melting device.

[0074] In the embodiment of the present disclosure, determining a first operating overvoltage threshold and a first lightning overvoltage threshold corresponding to the outlet end of the rectifier based on the DC voltage can 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 operating overvoltage threshold corresponding to the outlet end of the rectifier, wherein the first operating overvoltage at the outlet end of the rectifier is respectively less than or equal to the first target value, i.e., the first operating 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, and 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 a second operating overvoltage threshold and a 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 according to the actual situation 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 the embodiment of the present disclosure, determining the output voltage on the power supply side based on the AC voltage may specifically include obtaining the transformation ratio between the threshold transformers on the power supply side, and determining the value obtained by dividing the AC voltage by the transformation ratio as the output voltage on the power supply side.

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

[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 ice melting 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 the corresponding relationship between the number of ground wire insulators and the DC voltage.

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

[0084] The ground wire insulator used between the ground wire and the pole 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 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.

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

[0092]

[0093] Among them, K is the ratio; 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 disclosed embodiment, 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 achieve the safe and stable operation of the ground wire de-icing device without power outage of the conductor under the effects 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 in an embodiment of the present disclosure.

[0097] In the disclosed embodiment, the ground wire ice melting insulation coordination design device can be set in an electronic device, and is understood as a partial functional module in the above electronic device. Specifically, the electronic device can 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.

[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 used to obtain ice-melting environment data and the length of 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.

[0100] The DC voltage determination module 420 may be used to determine a DC voltage corresponding to the output end of the ground wire ice melting device based on the DC current and the ground wire ice melting length.

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

[0103] The insulation distance determination module 450 can be used to obtain the altitude of the ground wire corresponding to the ground wire de-icing device, and 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.

[0104] The ground wire ice melting insulation coordination design module 460 can be used to design the 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.

[0105] In the embodiment of the present disclosure, ice melting environment data and the length of ground wire ice melting can be obtained, the DC current required for the ground wire ice melting device to melt ice is determined based on the ice melting environment data, the DC voltage corresponding to the output end of the ground wire ice melting device is determined based on the DC current and the length of ground wire ice melting, the operating overvoltage threshold and the lightning overvoltage threshold at the target position corresponding to the ground wire ice melting device are determined based on the DC voltage, the first parameter corresponding to the AC lightning arrester located on the power supply side corresponding to the ground wire ice melting device and the second parameter corresponding to the DC lightning arrester located at the output end of the ground wire ice melting device are 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 is obtained, the first insulation distance corresponding to the ground wire ice melting device and the second insulation distance corresponding to the ground wire insulator are determined based on the altitude, and 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, thereby achieving safe and stable operation of the ground wire ice melting device without power outage of the conductor under high altitude, repeated icing, and the effects of 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 used to calculate the AC voltage at the transformer output end of the ground wire ice melting device based on the DC voltage;

[0108] Determine a first operation 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 used to calculate the product of the DC voltage and the 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] Calculate the product of the output voltage on the power supply side and the third preset value to obtain a third target value, and determine 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 used to determine the 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 used to determine the number of ground wire insulators based on the corresponding relationship between the number of ground wire insulators and the DC voltage;

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

[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 schematic diagram of an electronic device provided by an embodiment of the present disclosure.

[0123] In the disclosed embodiment, 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] The memory 520 may include a large capacity memory for information or instructions. By way of example and not limitation, the memory 520 may include a hard disk drive (HDD), a floppy disk drive, a flash memory, an optical disk, a magneto-optical disk, a tape, or a universal serial bus (USB) drive, or a combination of two or more of these. Where appropriate, the memory 520 may include a removable or non-removable (or fixed) medium. Where appropriate, the memory 520 may be inside or outside the integrated gateway device. In a particular embodiment, the memory 520 is a non-volatile solid-state memory. In a particular embodiment, the memory 520 includes a read-only memory (ROM). Where appropriate, the ROM may be a mask-programmed ROM, a programmable ROM (PROM), an erasable PROM (EPROM), an electrically erasable PROM (Electrically Erasable Programmable ROM, EEPROM), an electrically rewritable ROM (EAROM), or a flash memory, or a combination of two or more of these.

[0127] The processor 510 reads and executes the 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. For example, but 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 also 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 storage medium may include, for example, a memory 520 of computer program instructions, and the instructions may be executed by a processor 510 of an electronic device to complete the ground wire ice melting insulation coordination design method provided by the embodiment of the present disclosure. Optionally, the storage medium may be a non-temporary computer-readable storage medium, for example, a non-temporary computer-readable storage medium may be a ROM, a random access memory (RAM), a compact disc read-only memory (CD-ROM), a magnetic tape, a floppy disk, an optical data storage device, and the like.

[0132] The above description is only a specific embodiment of the present disclosure, so that those skilled in the art can understand or implement the present disclosure. Various modifications to these embodiments will be 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 will not be limited to the embodiments described herein, but will conform to the widest scope 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 the length of 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; 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; 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; 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 the operation overvoltage threshold and the lightning overvoltage threshold; Acquire 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; 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.

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 position includes a power supply side corresponding to the ground wire ice melting device and an outlet end of the rectifier; The step of 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 includes: Calculating an AC voltage at an output end of a transformer of the ground wire ice melting device based on the DC voltage; Determine 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: 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; 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 a 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 of a second operation overvoltage threshold and a second lightning overvoltage threshold corresponding to the power supply side based on the AC voltage comprises: Determining the power supply side output voltage based on the AC voltage; Calculate the product of the output voltage of the power supply side and a third preset value to obtain a third target value, and determine the third target value as a second operation overvoltage threshold corresponding to the power supply side, wherein the second operation overvoltage of the power supply side is less than or equal to the second operation overvoltage threshold; The product of the output voltage on 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, characterized in that The first parameter includes a first residual voltage threshold corresponding to the AC lightning arrester under an operational overcurrent, a second residual voltage threshold corresponding to the lightning current, and a current-carrying capacity under a lightning current impact of a preset waveform. The first residual voltage threshold is less than or equal to an operational overvoltage threshold corresponding to the AC lightning arrester, and the second residual voltage threshold is less than or equal to a 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 comprises: 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; 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; 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 step of 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 comprises: Determining the number of the ground wire insulators based on the corresponding relationship 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, used to obtain ice-melting environment data and the length of 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; A DC voltage determination 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; A lightning arrester parameter determination module, used to 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 the operation overvoltage threshold and the lightning overvoltage threshold; An insulation distance determination module, used for 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; 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 used to read the executable instructions from the memory and execute the executable instructions to implement the ground wire ice melting insulation coordination design method described in any one of claims 1 to 7.

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

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