电网技术2012，Vol.36Issue(9)：151-154,4.
支路故障后静态电压稳定裕度的估算
A Method to Estimate Static Voltage Stability Margin After Branch Outage
熊宁 1蔡恒 1程虹1
作者信息
- 1. 江西省电力科学研究院,江西省南昌市330096
- 折叠
摘要
Abstract
A method to estimate static voltage stability margin after branch outage is proposed. Firstly, the state variables of the critical point of voltage stability after branch outage is pre-estimated by second order sensitivity, and based on the pre-estimated state variables the post-fault injected power at state variables of the critical point are solved; then the injected power is equivalent to the variation of the injected power at initial operating point under normal conditions, and according to this equivalent variation the variation of post-branch outage load margin is pre-estimated to avoid the defect of insufficient pre-estimation accuracy due to low linear sensitivity of load margin to branch admittance. The effectiveness of the proposed method is verified by simulation results of IEEE 30-bus system.关键词
电力系统/静态电压稳定/负荷裕度/支路故障Key words
power system/ static voltage stability/ load margin/ branch outage分类
信息技术与安全科学引用本文复制引用
熊宁,蔡恒,程虹..支路故障后静态电压稳定裕度的估算[J].电网技术,2012,36(9):151-154,4.
