电力系统及其自动化学报2018，Vol.30Issue(3)：106-111,139,7.DOI:10.19635/j.cnki.csu-epsa.000003
风速相关性产生新方法及对电网电压稳定影响
Novel Method of Correlated Wind Speed Generation and Its Influence on the Voltage Stability of Power System
鄂志君 1张宇 2沈妍 3张利 2王麟 1李丛林1
作者信息
- 1. 国网天津市电力公司,天津300010
- 2. 国网天津市电力公司电力科学研究院,天津300384
- 3. 国网天津市电力公司城西供电分公司,天津300190
- 折叠
摘要
Abstract
The randomness of wind speed causes the output power fluctuation of wind turbine,which influences the volt-age stability of power system.Furthermore,the variations of wind speeds on adjacent wind farms in the same area are related to each other,which increases the influence on the voltage stability of power system.This paper proposes a novel method of correlated wind speed generation,which is applied to analyze the voltage stability of multiple wind farm pow-er systems.An improved Park-Shin(PS)algorithm is used to generate the correlated normal variables,and the probabil-ity is transformed to satisfy Weibull distribution so that an appropriate correlation matrix of wind speed is generated, which is further applied to the power flow analysis and singular value decomposition,then the static voltage stability of power system is analyzed.Taking a power system of wind speed correlated four-wind farm as an example,it is proved that the relevant wind speed calculated using the improved PS algorithm is more accurate than using the traditional Cho-lesky decomposition.The influence of correlation of wind speed on static voltage stability is simulated and analyzed by taking a practical 37-node power grid as an example.关键词
改进帕克-希恩算法/风速相关性/奇异值分解/电压稳定/相关性矩阵Key words
improved Park-Shin(PS)algorithm/correlation of wind speed/singular value decomposition/voltage stabil-ity/correlation matrix分类
信息技术与安全科学引用本文复制引用
鄂志君,张宇,沈妍,张利,王麟,李丛林..风速相关性产生新方法及对电网电压稳定影响[J].电力系统及其自动化学报,2018,30(3):106-111,139,7.
