极化电流行波方向继电器的实现方案

根据极化电流行波方向继电器（PCTDR）的基本原理和特点,给出了PCTDR的整体设计方案。并设计了以复杂可编程器件（CPLD）、高速数字信号处理器（DSP）和高性能微处理器（MPU）为核心的基于三CPU结构的超高速行波保护板,给出了其硬件设计方案及主要软件流程框图。同时给出了行波方向纵联保护的构成方案和动模实验室测试结...

Realization Scheme of Polarized Current Traveling-wave Based Directional Relay

According to the basic principle and features of polarized current traveling-wave based directional relay(PCTDR),an integrated design scheme of PCTDR is presented.Then the ultra high speed traveling-wave based protection board is designed with kernel of three CPU,i.e.complex programmable logic device(CPLD),digital signal processor(DSP),and high performance micro-processor unit(MPU).Also the hardware structure and software flow chart are presented.In the meantime,traveling-wave based directional pilot protection scheme is given and the test results of dynamic simulations are presented.The dynamic simulation results show that ultra high speed traveling-wave based protection board can implement synchronously high speed data sampling,real-time high-speed data processing,and high speed protection logic judgment function.The fault direction can be judged within 5 ms with PCTDR and the total tripping time of traveling-wave based directional pilot protection is about 15 ms.Traveling-wave based directional pilot protection has fast speed and is immune to capacitor voltage transformer’s transforming characteristics,current transformer saturation,fault types,fault distance and transient resistance,as well as it has good operation performance.