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High-voltage DC lightning arrester parameter design method

A design method, high-voltage DC technology, applied to emergency protection circuit devices, electrical components, emergency protection circuit devices for limiting overcurrent/overvoltage, etc., can solve the problem that the design method of arrester parameters has not yet been given

Active Publication Date: 2019-03-15
HUAZHONG UNIV OF SCI & TECH +1
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  • Abstract
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Problems solved by technology

[0003] The existing literature has not yet given a standardized and streamlined design method for arrester parameters suitable for engineering design

Method used

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  • High-voltage DC lightning arrester parameter design method
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  • High-voltage DC lightning arrester parameter design method

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Embodiment Construction

[0046] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0047] The basic constituent unit of the HVDC arrester body is the arrester valve plate. According to the size of the passing current, the high-voltage DC arrester can adopt the structure of single-column arrester or multi-column arrester in parallel. For multi-column arresters, each post arrester is composed of the same number of arrester valves connected in series.

[0048] Such as figure 1 Shown, a kind of design method of HVDC surge arrester parameter, described method comprises the following steps:

[0049] S1. Input the performance index parameters of the target HVDC surge arrester, the...

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Abstract

The invention discloses a high-voltage DC lightning arrester parameter design method. The method comprises the following steps: in the premise of knowing a technical performance index to be satisfiedby a lightning arrester, determining the number of the valve blocks in series connection of the lightning arrester through the preset number of the lightning arrester column according to the parameterof the valve block of the lightning arrester, and then gradually determining the maximum absorption energy, the DC reference voltage and like electrical parameters of the lightning arrester, and verifying the reasonability of the lightning arrester parameter design through the electromagnetic transient simulation, thereby forming a closed-loop of index giving-parameter designing-index verification in simulation-design parameter adjusting-index verification. Through the closed-loop iterative checking, the lightning arrester valve block model and the lightning arrester parameter satisfying theperformance index can be output, and the reasonability of the model and the parameter is further checked through electromagnetic transient simulation, thereby forming a normalized high-voltage DC lightning arrester parameter design method, the reasonable parameter of the lightning arrester can be simply and quickly determined, and the method has strong engineering actual significance for guiding the DC power transmission engineering lightning arrester parameter design.

Description

technical field [0001] The invention belongs to the technical field of power transmission and distribution in electric power systems, and more specifically relates to a parameter design method of a high-voltage direct current lightning arrester. Background technique [0002] HVDC surge arrester is one of the key equipment in HVDC transmission project. Its main function is to limit various types of transient overvoltage in DC transmission project and prevent transient overvoltage from damaging HVDC transmission equipment. After determining the arrester layout scheme and its required lightning impulse and operation shock protection level, minimum absorbed energy and other arrester performance index parameters, how to design the arrester parameters according to the given performance index, including arrester valve type, parallel column number, DC reference voltage, lightning impulse protection level, operation impact protection level and maximum absorbed energy are one of the k...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H9/04
Inventor 鲁晓军白鹏刘汉军蔺广科林卫星向往文劲宇
Owner HUAZHONG UNIV OF SCI & TECH
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