Mixed nonlinear dynamic voltage phasor tracing method based on WAMS/SCADA  

作　　者：Xiao-gang CHEN Yong-hui YI Wei WANG Quan-yuan JIANG Chuang-xin GUO Yi-jia CAO 

机构地区：[1]School of Electrical Engineering, Zhejiang University, Hangzhou 310027, China [2]Hangzhou Electric Power Bureau, Hangzhou 310009, China [3]Zhejiang Provincial Electric Power Company, Hangzhou 310007, China

出　　处：《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》2009年第6期868-876,共9页浙江大学学报（英文版）A辑（应用物理与工程）

基　　金：Project supported by the National Natural Science Foundation of China (Nos. 50507018, 50595414, 50677062, and 60421002);the National Basic Research Program (973) of China (No. 2004CB217902);the National Key Technologies Supporting Program of Chinaduring the 11th Five-Year Plan Period (No. 2006BAA02A01);theKey Grant Project of MOE of China (No. 305008)

摘　　要：By considering the static voltage characteristic of the load, we propose a WAMS/SCADA mixed nonlinear method to estimate the voltage of unobservable buses caused by topology change or phasor measurement unit (PMU) malfunction in a power system. By modeling the load characteristic with data from SCADA, we employed the Gauss-Seidel method to solve the nonlinear equations and estimate the voltage of unobservable buses with the high precision voltages of neighboring buses measured by a PMU. Simulations were carried out on the IEEE 39-bus system, and the results show that this novel method can dynamically and accurately trace the variation of the voltage phasor of the unobservable buses.By considering the static voltage characteristic of the load, we propose a WAMS/SCADA mixed nonlinear method to estimate the voltage of unobservable buses caused by topology change or phasor measurement unit （PMU） malfunction in a power system. By modeling the load characteristic with data from SCADA, we employed the Gauss-Seidel method to solve the nonlinear equations and estimate the voltage of unobservable buses with the high precision voltages of neighboring buses measured by a PMU. Simulations were carried out on the IEEE 39-bus system, and the results show that this novel method can dynamically and accurately trace the variation of the voltage phasor of the unobservable buses.

关 键 词：Wide area measurement system （WAMS） Supervisory control and data acquisition （SCADA） system OBSERVABILITY Dynamic tracing Nonlinear equation 

分 类 号：TM73[电气工程—电力系统及自动化] TP273.5[自动化与计算机技术—检测技术与自动化装置]