电工技术学报2011，Vol.26Issue(8)：190-197,8.
基于虚拟节点的复杂电网电压跌落随机评估方法
Stochastic Assessment Method of Voltage Dip in Complex Power Grid Based on Virtual Bus
摘要
Abstract
With the wide application of sensitive equipment in power system,the requirement of power customers for better power quality is rising.The voltage dip assessment is becoming an important content of power quality study.In this paper,a stochastic assessment method of voltage dip with adding a virtual bus in the fault position is proposed.The remaining voltage expression of each bus is derived after a balanced or unbalanced fault taking place in any position of the complex power grid.The areas of vulnerability are calculated under different fault types.Considering the fault zone according to the remaining voltage amplitude range and the fault distribution probability,the voltage dip times per year of each bus is calculated.The validity of the proposed voltage dip assessment method is proved in the standard IEEE-30 bus system.关键词
复杂电网/电压跌落/电能质量/随机预估/对称和不对称故障/凹陷域Key words
Complex power grid/voltage dips/power quality/stochastic assessment/balanced and unbalanced fault/area of vulnerability分类
信息技术与安全科学引用本文复制引用
王东旭,乐健,刘开培,仰彩霞,沈广..基于虚拟节点的复杂电网电压跌落随机评估方法[J].电工技术学报,2011,26(8):190-197,8.基金项目
国家自然科学基金资助项目 （）
