摘要
电力系统的高速发展导致了系统短路电流水平急剧增加,超导限流器SFCL(Superconducting Fault Current Limiter)是目前最理想的限流装置。本文详细介绍了含有超导限流器的电力系统的功率特性,并利用等面积准则分析了系统暂态过程,在理论上解释了超导限流器对电力系统暂态稳定的影响;由于超导限流器在电力系统中应用会对继电保护产生影响,尤其是对于距离保护影响较为明显,本文后部分详细分析了超导限流器对距离保护的影响,提出了新的整定方法,最后通过仿真实例对新的方法进行了验证。
The fast development of power system leads to sharp increase of the short circuit current. Until now, Superconducting Fault Current Limiter （SFCL） is considered the best limiting equipment. The power characteristics of the system installed with SFCLs are presented in details and the transient process of power systems is analyzed by using the equal area criterion. The explanation for the mechanism of SFCL＇ s influence on transient stability of power system is given. For the SFCL installed in the power system has impact on relaying protection, and the impact on the distance protection is especially distinct. The SFCI＇s influence on the distance protection is analyzed in detail in the second half part of this paper. A new setting method is proposed. Finally, the new method is tested using a simulation example.
出处
《电工电能新技术》
CSCD
北大核心
2007年第2期45-48,58,共5页
Advanced Technology of Electrical Engineering and Energy
关键词
超导限流器
电网
暂态稳定
继电保护
SFCLs
power grid
transient stability
system protection
