Multi-column parallel lightning arrester group energy equalization matching method and device and medium

Abstract

The invention discloses a multi-column parallel lightning arrester group energy equalization matching method and device and a medium. The method comprises the following steps: determining lightning arrester group parameter requirements and selecting a resistor disc; generating a resistor disc initial matching matrix; determining the overvoltage waveform of the lightning arrester group, calculatingthe current waveform of each column, and calculating the absorbed energy of each resistor disc under the current waveform; removing the resistor discs with large energy absorption deviation; exchanging the position of the resistor disc according to the energy absorption matrix, exchanging the position of the resistor disc with the minimum absorbed energy of the current maximum column with the position of the resistor disc with the maximum absorbed energy of the current minimum column, iteratively calculating and repeating the step; and the more the iteration times are, the more uniform the energy distribution is. The resistor disc matching algorithm based on absorption energy balance is proposed for the first time, the method is suitable for large-scale multi-column parallel lightning arrester matching design, due to the fact that lightning arrester groups at the same position face different working conditions, overvoltage waveforms of different lightning arrester groups can be matched, and the operation reliability of the lightning arrester groups is effectively improved.

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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Problems solved by technology

[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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