Simulation Analysis on Transient Overvoltage of Asymmetric Short Circuit in Cable Collector Networks of Offshore Wind Farm

GUO Yaxun; LIU Gang; LIANG Jiahao; ZHOU Lu; JIANG Xiaofeng; XU Yulian; ZHANG Jingxin

doi:10.13296/j.1001-1609.hva.2018.05.032

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Simulation Analysis on Transient Overvoltage of Asymmetric Short Circuit in Cable Collector Networks of Offshore Wind Farm

更新时间：2025-04-26

- Simulation Analysis on Transient Overvoltage of Asymmetric Short Circuit in Cable Collector Networks of Offshore Wind Farm
- High VoltageApparatus Vol. 54, Issue 5, Pages: 204-209+216(2018)
- 作者机构：
  
  华南理工大学
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2018.05.032
  CLC： TM614
- Published：2018
- 稿件说明：
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[1]郭亚勋,刘刚,梁嘉浩,周露,江晓锋,许育炼,张景新.海上风电场电缆集电网不对称短路暂态过电压仿真分析[J].高压电器,2018,54(05):204-209+216.

GUO Yaxun, LIU Gang, LIANG Jiahao, et al. Simulation Analysis on Transient Overvoltage of Asymmetric Short Circuit in Cable Collector Networks of Offshore Wind Farm[J]. High voltageapparatus, 2018, 54(5): 204-209+216.
[1]郭亚勋,刘刚,梁嘉浩,周露,江晓锋,许育炼,张景新.海上风电场电缆集电网不对称短路暂态过电压仿真分析[J].高压电器,2018,54(05):204-209+216. DOI： 10.13296/j.1001-1609.hva.2018.05.032.

GUO Yaxun, LIU Gang, LIANG Jiahao, et al. Simulation Analysis on Transient Overvoltage of Asymmetric Short Circuit in Cable Collector Networks of Offshore Wind Farm[J]. High voltageapparatus, 2018, 54(5): 204-209+216. DOI： 10.13296/j.1001-1609.hva.2018.05.032.

摘要

为了研究大型海上风电场电缆集电网不对称短路引起暂态过电压幅值过大的问题

文中使用PSCAD/EMTDC电磁暂态仿真软件建立300 MW海上风电场暂态计算模型

重点研究了故障点、机端变压器距母线位置、单条馈线风机数量、运行馈线数等因素对暂态过电压的影响以及短路故障后分闸产生的过电压。仿真分析表明

单相接地短路引起的暂态过电压大于故障后分闸产生的过电压

幅值最高可达2.5 p.u.。在此基础上

文中进一步研究了单相短路故障引起过电压的抑制措施

当避雷器和RC阻容保护器两种装置配合应用在机端变压器高压侧

过电压可抑制到2.24 p.u.

为海上风电场内部电气系统设计和风机端变压器绝缘设计提供了一定参考。

Abstract

In order to research the high transient overvoltage amplitude which caused by asymmetrical short circuitin large-scale offshore wind farm cable network

this paper builds a 300 MW offshore wind farm transient calculationmodel using PSCAD/EMTDC electromagnetic transient simulation software. The influence of fault point

location oftransformer

number of single feeder fan and feeders on transient overvoltage and the overvoltage produced by failuresub-gate are emphatically studied. The simulation results show that transient overvoltage caused by single-phase short-circuit is greater than over-voltage caused by tripping after the fault

and the maximum amplitude can be up to 2.5 p.u..On this basis

this paper further studies overvoltage suppression measures owing to single-phase short-circuit fault

when the arrester and RC protector coordinately applied on the high-voltage side of motor-side transformer

overvolt-age can be suppressed to 2.24 p.u.

this will provide a certain reference for internal electrical system design of off-shore wind farm and insulation design of fan-side transformer.

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