A multi-column parallel lightning arrester group can be combined with the method, device and medium
A lightning arrester and parallel connection technology, which is applied in the field of lightning arresters, can solve the problems of low reliability and achieve the effect of improving operational reliability
Inactive Publication Date: 2022-04-15
ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID NINGXIA ELECTRIC POWER COMPANY
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[0008] The invention proposes a multi-column parallel lightning arrester group can be grouped method and device, which can solve the technical problem of low reliability of the existing resistive plate grouping method
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[0042] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments.
[0043] Such as figure 1 As shown, the multi-column parallel surge arrester group described in this embodiment can be combined with the method, including the following steps:
[0044] S100. Select the parameter requirements of the arrester group and the resistors, and determine the number of pieces per column and the number of parallel columns of the arrester;
[0045]S200. Determine the current waveform of each column of the lightning arrester group at the set position, calculate the energy absorbed by each resistor sheet under the current waveform...
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A multi-column parallel lightning arrester group can be combined method, device and medium, comprising the steps of: determining the parameter requirements of the lightning arrester group and selecting the resistance sheet; generating the initial matching matrix of the resistance sheet; determining the overvoltage waveform of the arrester group, and calculating the current of each column Waveform, calculate the energy absorbed by each resistor sheet under the current waveform; remove the resistor sheet with a large deviation of absorbed energy; exchange the position of the resistor sheet according to the energy absorption matrix, and compare the resistor sheet with the largest current column with the least energy absorption and Exchange the position of the resistor with the largest energy absorbed by the column with the smallest current, iteratively calculate and repeat this step; the more iterations, the more even the energy distribution. The invention proposes for the first time an algorithm for grouping groups of resistors based on energy absorption balance, which is suitable for the design of large-scale multi-column parallel arrester groups. Since the arrester groups at the same position face different working conditions, the present invention can be used for overvoltage waveforms of different arrester groups. Matching groups can effectively improve the operation reliability of the arrester group.
Description
technical field [0001] The invention relates to the technical field of arresters, in particular to a method and device for multi-column parallel arrester groups capable of being combined. Background technique [0002] With the steady advancement of the strategy of "power transmission from west to east, mutual supply between north and south, and national networking" in my country's power system, HVDC transmission systems are more and more used in power grids. Compared with high-voltage AC transmission, high-voltage direct current transmission has the advantages of large transmission capacity, long distance, low loss, etc., and there is no stability problem of synchronous operation, so it is widely used in large-capacity long-distance power transmission. [0003] The converter station is the hub of the high-voltage direct current transmission project and plays a key role in the entire direct current transmission project. The AC and DC equipment in the station are expensive, an...
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IPC IPC(8): G01R31/00
CPCG01R31/00
Inventor 李江涛何家欣王川刘志远艾绍贵于晓军虞江华刘波李秀广
Owner ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID NINGXIA ELECTRIC POWER COMPANY