基于广域测量测点降阶的系统受扰轨迹预测  

Perturbed Trajectories Prediction for Multi-machine Power Systems Based on WAMS Measurement Placement of Reduced Order

作　　者：李琰[1] 周孝信[1] 周京阳[1] 

机构地区：[1]中国电力科学研究院,北京市海淀区100192

出　　处：《中国电机工程学报》2008年第10期9-13,共5页Proceedings of the CSEE

基　　金：国家重点基础研究发展计划项目(973项目)(2004CB217904)~~

摘　　要：提出基于同步相量测量单元(phasor measurement units,PMU)量测的多机系统受扰轨迹预测方法。在系统受扰后,首先分析可用的PMU量测能否反映当前受扰模式,然后针对各PMU测点类型来确定降阶系统的保留节点,初始降阶后在保留节点引入虚拟负荷,实现对降阶系统的修正,其中虚拟负荷的参数可通过PMU实测得到辨识。利用修正后的降阶系统,结合各保留节点所连接的包括发电机在内的动态元件模型及其参数,就可实现基于PMU测点降阶的多机系统受扰轨迹预测。10机39节点系统对该算法的验证,表明该算法的可实现性和良好的前景。An algorithm to predict the perturbed trajectories in multi-machine system is proposed based on data from phasor measurement units （PMU）. By using on-line system perturbation analysis, introducing an additional virtual load for each reserved nodes, the power system can be represented by a reduced order model of reserved nodes with PMU. The parameter of additional virtual load model can be identified based on PMU data. With equations of related generator and other dynamic elements equation, the perturbed trajectories prediction should be realized. The effectiveness of the proposed algorithm is verified with numerical simulation on 10-machine 39-bus power system, and the resultant scheme is being implemented.

关 键 词：相量测量单元 多机系统 轨迹预测 负荷模型 

分 类 号：TM74[电气工程—电力系统及自动化]