基于BPA的电力系统低压减载的研究

低压减载作为电力系统的第三道防线,是维持电力系统安全稳定和经济运行,并保证电能质量的重要措施.依工程实际需求,在电力系统分析软件BPA的基础上,参考国内外现有研究成果,针对分散型低压减载方案,提出基于电压-无功灵敏度减负荷的方法确定低压减载量.采用连续潮流算法,确定薄弱区域的电压-无功灵敏度,最后通过时域仿真分析对所配置的方案进行校验.以河北南网2007年夏季高峰数据为例,验证了该方法具有很好的工程参考价值.

Study on Power System Under-Voltage Load Shedding Based on BPA

As a third defense line of the power system, the UVLS under-voltage load shedding is an important strategy to maintain the stable and economical operation of the power system, and to guarantee the power supply quality. Therefore, according to the practical engineering requirements, on the basis of analyzing the software BPA and the information of research results acquired both at home and abroad, this paper presents a method to determine the volume of the UVLS for dispersed-type of UVLS. The voltage-variation of the reactive power of a power grid is determined by using the continuous power flow algorithm, and then the configuration is verified with the time-domain simulation analysis. Taking the data of the peak time in the south grid of Hebei province in the summer of 2007 as an example, this paper demonstrates that the current methods can serve as informative references for future projects.