摘要
基于极化电流行波方向继电器的行波方向比较式纵联保护技术利用电流行波高频分量和电压行波低频分量的极性关系构成方向继电器,避免了电容式电压互感器(CVT)不能有效传变电压行波高频分量的问题。介绍了基于极化电流行波方向继电器的纵联保护技术及相应的保护装置在现场的应用情况。利用现场的故障录波数据,分析了电容式电压互感器和电流互感器对于电压、电流行波信号传变特性的影响,结果验证了该保护原理的正确性和保护装置的可靠性。
Since the CVT（Capacitor Voltage Transformer） is unable to transfer the high-frequency component of voltage travelling wave,the directional comparison pilot protection technology based on PCTDR（Polarized Current Travelling wave based Directional Relay） adopts the polarity relationship between the high-frequency component of current and low-frequency component of voltage to construct the directional relay. The PCTDR-based directional comparison pilot protection technology and the site application of corresponding protection device are introduced. The influences of CVT and CT（Current Transformer） on the transfer characteristics of voltage and current travelling waves are analyzed based on the fault recording data and the results show the correctness of the introduced protection principle and the reliability of the protection device.
出处
《电力自动化设备》
EI
CSCD
北大核心
2015年第9期1-5,共5页
Electric Power Automation Equipment
基金
国家自然科学基金重点资助项目(50937003)
国家自然科学基金重大国际(地区)合作研究项目(51120175001)~~
关键词
继电保护
行波保护
超高压输电
特高压输电
小波变换
纵联保护
装置应用
relay protection
travelling wave protection
EHV power transmission
UHV power transmission
wavelet transforms
pilot protection
device application
