计及无功功率的电网可靠性评估  

Reliability Assessment of Power System Based on Reactive Power

作　　者：秦文萍[1] 孟繁华[1] 张炜[1] 

机构地区：[1]太原理工大学电气与动力工程学院,太原030024

出　　处：《太原理工大学学报》2012年第2期148-152,共5页Journal of Taiyuan University of Technology

基　　金：山西省归国留学人员基金资助项目(2010-28)

摘　　要：研究了无功功率对电力系统可靠性的影响,涉及无功功率短缺及由无功电源故障引起的相关的电压稳定性问题,定义了无功功率缺乏引出的的可靠性指标。并以太原220kV电网为例,用传统的切负荷方法和无功功率就地补偿的方法分别计算了电力系统可靠性指标,利用MAT-LAB程序实现了所提方法,对得出的结果加以比较,验证了方法的正确性。分析结果将为系统规划和管理人员提供电压和无功管理方面重要的实用信息。The effect of reactive power on reliability of power system was investigated. Reactive power shortage and the associated voltage violations due to the failures of reactive power sources were considered and the reliability indices due to reactive power shortages were defined and distinguished from those due to real power shortages. Taking Taiyuan power system as example, load curtailment method and reactive power compensation method were used sepatately to calculate the power system reliability index on MATLAB. The correctness of this method was verified. The results provide system planners and operators with very important practical infor- mation for voltage and reactive power management.

关 键 词：可靠性 无功功率 电压稳定性 切负荷 

分 类 号：TM71[电气工程—电力系统及自动化]