电力系统保护与控制2012，Vol.40Issue(2)：82-87,6.
SSSC串补线路双端暂态保护的研究
Research on two-end transient protection principle for series compensated transmission lines with SSSC
刘青 1常彦彦1
作者信息
- 1. 华北电力大学电气与电子工程学院,河北保定071003
- 折叠
摘要
Abstract
With the application of Static Synchronous Series Compensator (SSSC), the transmission capability of power grid and system stability are enhanced effectively. However, the operation condition and control strategy of SSSC complicates the transient process of fault power grid and has adverse impacts on the performance of traditional protection. For this reason, the new protection principles for the series compensated lines with SSSC should be studied further. In this paper, the improved wavelet packet' entropy is used to analyze the frequency characteristics of the fault current at both ends. The results indicate that the wavelet packet entropy of the frequency components at both ends of the line is obviously different when fault occurs before and after SSSC or in external area. The characteristics of the series compensated lines are verified by simulation and then a scheme of two-end transient protection for the series compensated lines with SSSC is proposed. The simulation results show that the proposed scheme is not affected by fault position, fault type, fault inception angle, series compensation degree and fault resistance, and has good adaptability.关键词
改进小波包熵/SSSC/串补线路/频率分量/双端暂态量Key words
improved wavelet packet entropy/ SSSC/ series compensated lines/ frequency components/ two-end transient components分类
信息技术与安全科学引用本文复制引用
刘青,常彦彦..SSSC串补线路双端暂态保护的研究[J].电力系统保护与控制,2012,40(2):82-87,6.
