N-1网络电压及灵敏度快速算法  

Rapid Algorithm of Voltage and Voltage Sensitivity for N-1 Power System

作　　者：吴政球[1] 黄庆云[1] 潘纪良[1] 邓阳[1] 容文光[1] 

机构地区：[1]湖南大学电气与信息工程学院,长沙410082

出　　处：《电力系统及其自动化学报》2009年第1期118-123,共6页Proceedings of the CSU-EPSA

摘　　要：快速求取N-1网络下各节点电压和各节点电压对任一节点系统运行参数的灵敏度对于N-1网络下的实时电压稳定监视和分析具有重要意义。通过牛顿潮流计算出N网络的各节点电压及其对系统运行参数的灵敏度;利用已收敛的潮流修正方程式和N网络灵敏度计算方程式分别对线路开断参数多阶求导,从而计算出电压和灵敏度对此线路开断参数的多阶导数值;根据泰勒级数展开式修正N网络的电压和灵敏度值,得到N-1网络的电压和灵敏度值。并以IEEE 118节点标准网络的结果证明了该方法的正确性和实用价值。Fast calculating node voltage and sensitivity of node voltage to any system operating parameter is very important to the real time stakeout and analysis of voltage stabilization in a N-1 system. The voltage and the sensitivity of voltage to system operation parameters are calculated by Newton power flow approach; the various higher order derivatives of voltage and voltage sensitivity to line open-break parameter can be obtained by using the convergent correction equation of power flow and the equation of calculating sensitivity for the N power system. Finally, the voltage and sensitivity of N-1 power system can be calculated by correcting the voltage and sensitivity of N power system by Taylor series expansion. Tests on IEEE 118 bus system verify the correctness and practical utility of this approach.

关 键 词：电压稳定 N-1网络 线路开断参数 灵敏度 泰勒级数 

分 类 号：TM714[电气工程—电力系统及自动化]