CAJ | 학술논문

通过分析行波在电网中的传输特性,根据传输线路故障后的行波方程和电网络拓扑结构,提出了一种基于多自由度的行波装置最优化配置和定位算法.该算法根据行波在电网中传输的自由度,通过求解最大非奇异子集获得最优化配置结果.通过该算法不仅能得到行波故障定位装置的最优化配置,还能有效避免断路器状态的不可靠信息,如断路器发生误动或者拒动对故障定位的影响.利用经过多自由度优化配置的行渡装置,通过多点协调实现故障定位.仿真分析表明,该算法简单、可靠,而且能有效地节省行波定位装置的投资成本.
통과분석행파재전망중적전수특성,근거전수선로고장후적행파방정화전망락탁복결구,제출료일충기우다자유도적행파장치최우화배치화정위산법.해산법근거행파재전망중전수적자유도,통과구해최대비기이자집획득최우화배치결과.통과해산법불부능득도행파고장정위장치적최우화배치,환능유효피면단로기상태적불가고신식,여단로기발생오동혹자거동대고장정위적영향.이용경과다자유도우화배치적행도장치,통과다점협조실현고장정위.방진분석표명,해산법간단、가고,이차능유효지절성행파정위장치적투자성본.
The propagation characteristics of travelling wave in power grid are studied.According to the travelling wave equation and grid topology after transmission line fault,an optimal placement and fault locating algorithm based on multi-DOF(Degree Of Freedom)is presented,which calculates the optimal placement by solving its maximum nonsingular subset according to the multi-DOF of travelling wave.It is immune to the influenee of unreliable circuit breaker status information on fault location.The travelling wave equipment with optimized placement loeates the fault by cooperation.Simulative results illustrate the proposed method is simple,reliable and economical.