首页|Effective Ultra-high-speed Identification Scheme of Lightning Strikes Suitable for VSC-based DC Grids

Effective Ultra-high-speed Identification Scheme of Lightning Strikes Suitable for VSC-based DC Grids

扫码查看
原文链接
  • 国家科技期刊平台
  • NETL
  • NSTL
  • 万方数据
To ensure their sound and continuous operation to the greatest extent,VSC-based DC girds have extremely stringent requirements for transmission line relay protection.In terms of guaranteeing their reliability,accurate identification of lightning strikes on DC transmission lines is one of the urgent key problems to be solved.An effective ultra-high-speed identification scheme of lightning strikes suitable for the VSC-based DC grid is proposed in this paper.First,an 1-mode reverse voltage traveling wave(RVTW)is constructed applying the pole-mode transformation theory.Next,fault traveling wave propagation characteristics along the DC transmission line are analyzed in depth utilizing Peterson's law.Then,differences of time-frequency electromagnetic transient characteristics of 1-mode RVTWs between disturbances and faults caused by lightning strikes are distinguished in detail by means of the classical wavelet transformation multi-resolution analysis theory.Finally,extensive simulations are carried out to evaluate the performance of the proposed identification scheme,and by which its excellent rapidity,reliability and robustness are validated.

Lightning-strike identificationMulti-resolution analysisRelay protectionTraveling-wave protectionVSC-based DC gridWavelet transformation

Longlong Chen、Xiangyu Pei、Xiaoguang Wei、Pengzhi Li、Guangfu Tang

展开 >

North China Electric Power University(NCEPU),Beijing 102206,China

Changsha University of Science and Technology,Changsha 410114,China

State Key Laboratory of Advanced Power Transmission Technology,State Grid Smart Grid Research Institute Co.Ltd.,Beijing 102209,China

国家自然科学基金State Key Laboratory of Advanced Power Transmission Technology

52277075GEIRI-SKL-2020-012

2024

10.17775/CSEEJPES.2021.04690

中国电机工程学会电力与能源系统学报(英文版)
中国电机工程学会

中国电机工程学会电力与能源系统学报(英文版)

CSTPCDEI
ISSN：2096-0042
年,卷(期)：2024.10(2)
  • 30