CAJ | 학술논문

针对已有的电压稳定指标得到的只是稳定的结果,而对影响系统电压稳定性的关键因素研究不够深入的问题,采用连续潮流算法进行裕度灵敏度分析,根据系统临界点附近的正切向量,并结合右特征向量与右奇异向量推导出电压稳定指标,此指标可用于描述影响系统电压稳定性的关键因素. 通过对传输裕度预估计算,得出负荷裕度关于励磁系统参数、网络参数以及负荷参数灵敏度的计算. IEEE-39节点系统仿真结果表明:所提出的负荷裕度关于典型参数的灵敏度计算方法可用于估算系统参数变化情况下的电压稳定裕度、判断出系统电压稳定性敏感节点、选取最合适的无功补偿位置、确定维持电压稳定性的最佳切负荷量.
침대이유적전압은정지표득도적지시은정적결과,이대영향계통전압은정성적관건인소연구불구심입적문제,채용련속조류산법진행유도령민도분석,근거계통림계점부근적정절향량,병결합우특정향량여우기이향량추도출전압은정지표,차지표가용우묘술영향계통전압은정성적관건인소. 통과대전수유도예고계산,득출부하유도관우려자계통삼수、망락삼수이급부하삼수령민도적계산. IEEE-39절점계통방진결과표명:소제출적부하유도관우전형삼수적령민도계산방법가용우고산계통삼수변화정황하적전압은정유도、판단출계통전압은정성민감절점、선취최합괄적무공보상위치、학정유지전압은정성적최가절부하량.
The stable results are obtained through the existed voltage stability,but few studies are related to the key factors affecting the system voltage stability, the margin sensitivity analysis based on Continua-tion Power Flow ( CPF) was performed, and the voltage stability index was derived by the combination of the tangent vector around the critical point and the right eigenvector and the right singular vector. This in-dex was used to describe the critical factors affecting the voltage stability of the system. The calculation of the load margin sensitivity with respect to excitation system parameters, network parameters and load pa-rameters was obtained by estimating the transfer margin. The simulation results on the IEEE-39 bus sys-tem show the proposed calculation method of the load margin sensitivity with respect to the typical param-eter can be used to estimate the voltage stability margin under the system parameters changing situation, determine the system voltage stability sensitive nodes, select the most suitable position of reactive power compensation and determine the best cutting load to maintain voltage stability.