【作者】 李梦骄； 罗明亮； 王建全；

【Author】 LI Meng-jiao;LUO Ming-liang;WANG Jian-quan;College of Electrical Engineering,Zhejiang University;

【机构】 浙江大学电气学院；

【摘要】 根据电压稳定研究的成果,提出了一种适合工程应用要求的暂态电压稳定判据形式。同时,提出了基于最优控制原理的求解暂态电压约束梯度的方法,能有效提高计算速度,并将其作为暂态电压稳定约束加入OTS模型。由于这种方法大幅降低了暂态稳定约束的维数,所以大大地减少了计算量,并且能够处理多个预想事故。最后,采用正EE3机9节点系统对所提算法进行仿真分析。结果表明,本文所提的电压稳定判据有效可行,并且经OTS求解后的系统能够维持暂态电压稳定,从而验证了该算法的有效性和正确性。更多还原

【Abstract】 According to the research results of the voltage-stability,a transient voltage-stability criterion in the form of requirement for engineering applications is proposed.Also,based on optimal control theory,an effective approach,to calculate the gradients of transient stability constraints with respect to all control variables is proposed.All the results are regarded as transient stability constraints added to the OTS model.Transient voltage-stability constraints are simplified which could improve the calculating efficiency,so this method is so efficiency to be able to handle multiple contingencies.In the end,an IEEE9-bus system is applied to test the proposed approach.The results show that the transient voltage-stability criterion is feasible and effective,the system is able to maintain transient voltage-stability after the calculation of OTS,so that it illustrates the effectiveness and efficiency of the proposed approach.更多还原