摘要
针对电力系统静态电压稳定问题,采用简单交流电路方程组的几何分析,得出临界崩溃潮流的电压电流特性,并利用该特性提出在负荷扰动下,通过增大负荷的有功功率或无功功率可以识别电力系统薄弱支路的方法,从而为运行调度人员提供防止电压失稳、规避电压崩溃的理论依据,IEEE5节点算例结果表明,该方法确实是行之有效的。
Aiming at the stability problem of static state voltage in electric power system, adopting the geometric analysis of simple AC circuit equation group, the author obtained the V-I characteristic of critical collapse power flow, and presented a method to identify the weak branch in power system by means of increasing the active power or reactive power of load using this characteristic under the condition of load disturbance. Thereby a theoretical evidence to prevent voltage instability and to evade voltage collapse could be provided to the operators and dispatchers, This method is proved to be effective and available by the computing result of IEEE5 node algorithm.
出处
《广东输电与变电技术》
2006年第4期4-7,共4页
Guangdong Power Transmission Technology
关键词
电压稳定
电压崩溃
薄弱支路
Voltage stability Voltage collapse Weak branch
