【作者】 杜晓明； 赵冬梅；

【Author】 DU Xiao-ming, ZHAO Dong-mei (North China Electric Power University,Beijing 102206,China)

【机构】 华北电力大学；

【摘要】 本文阐述了用改进连续潮流法求取电力系统的PV曲线。针对常规潮流法在鞍结分岔点附近不收敛,该方法通过增加一维潮流方程,消除了功率极限点附近的雅可比矩阵奇异的现象,获取精确的电压稳定极限和整支PV曲线。算法采用了预估校正技术,相对于以往的预估校正技术,提出了一些改进方法,运算更加快捷精确,更好地解决了常规潮流法在鞍结分岔点附近不收敛的问题,可顺利越过鼻形点,绘制出整枝的PV曲线。并用科学计算软件MATLAB对一个简单电力系统做了仿真验证,证明了该方法的有效性。该方法不但具有理论意义而且有实际应用价值。更多还原

【Abstract】 This paper proposes an improved method of continuation power flow calculation to trace the PV curve of power system.As to the problem of divergency of conventional power flow method,By using an augment eqution this method can get the exact limit of voltage stability and the whole PV curve without encountering the numerical difficulty of ill-conditioning.The algorithm adopts the predictor-corrector technique.As to the past one, it proposes some improved method which makes calculation more quickly and exactly ,the nose node can be crossed successfully and the completed PV curve can be plotted.The paper also proves the validity of the method by simulating a simple power system by using the scientific software MATLAB.The method has both theory meaning and value of application.更多还原