Impact of wind power generating system integration on frequency stabilization in multi-area power system with fuzzy logic controller in deregulated environment

Among the available options for renewable energy integration in existing power system, wind power is being considered as one of the suited options for future electrical power generation. The major constraint of wind power generating system （WPGS） is that it does not provide inertial support because of power electronic converters between the grid and the WPGS to facilitate frequency stabilization. The proposed control strategy suggests a substantial contribution to system inertia in terms of short-term active power support in a two area restructured power system. The control scheme uses fuzzy logic based design and takes frequency deviation as input to provide quick active power support, which balances the drop in frequency and tie-line power during transient conditions. This paper presents a comprehensive study of the wind power impact with increasing wind power penetration on frequency stabilization in restructured power system scenario. Variation of load conditions are also analyzed in simulation studies for the same power system model with the proposed control scheme. Simula- tion results advocates the justification of control scheme over other schemes.

高压空载线路的可控开、合研究

借助于配有合闸电阻的断路器来限制超高压线路上的开、合过电压的传统方法已被广泛应用的实践证明是很有效的。然而，还可以展望其它的方法，特别是控制断路器瞬间合闸的的方法。 研究了超高压线路上采用可控开、合的可能性，并比较了现有的几种解决办法。同时考虑了可能碰到的各种电网特性。详细说明了因断路器的性能造成电网中的过电压水平及所造成的后果。本文的重点放在应用方面的关键问题。