中国电机工程学报2013，Vol.33Issue(4)：179-185,前插23,8.
高压直流输电线路单端暂态量保护装置的技术开发
Technical Development of Non-unit Protection Devices Based on Transient Signals for HVDC Transmission Lines
摘要
Abstract
To solve the problems existing in traditional main protection for transmission lines, such as insufficient sensitivity and poor reliability, the novel non-unit main protection device based on transient signals for high voltage direct current (HVDC) transmission lines was developed on the present HVDC control and protection platform hardware and software. The protection scheme for HVDC transmission lines is based on the attenuation characteristics of line boundary for high frequency voltage signals and is composed of starting unit, transient signal based directional unit, boundary unit, lightning disturbance identification unit and fault-pole identification unit. All commissioning tests for control and protection systems of HVDC transmission lines were performed on the transient signal based protection device, which used control and protection devices, and RTDS simulation models for actual HVDC secondary system commissioning. The results show that the protection device can accurately identify internal faults, external faults and lightning disturbance at high speed, and is suitable for different HVDC projects. The protection principle is reliable and the amount of calculation is small; besides, the threshold values of each unit do not need to be changed when applied to different HVDC projects and the protection is feasible.关键词
高压直流/输电线路/保护装置/暂态量保护/单端量/技术开发Key words
high voltage direct current (HVDC)/ transmission lines/ protection devices/ protection based on transient signals/ non-unit quantity/ technical development分类
信息技术与安全科学引用本文复制引用
张保会,孔飞,张嵩,张爱玲,吴庆范,甄威..高压直流输电线路单端暂态量保护装置的技术开发[J].中国电机工程学报,2013,33(4):179-185,前插23,8.基金项目
国家自然科学基金项目(50977074). （50977074）
