摘要
提出了一种基于静态能量函数法的电压弱节点评估新方法。从静态能量函数的数学模型出发,求取各负荷节点的基态及临界运行的能量值。由负荷节点的能量信息,提出趋势指标来判断系统的薄弱节点,并提出能量裕度指标来量化系统的裕度值,然后在选定的薄弱节点处进行无功补偿,并对无功补偿前后系统能量裕度的变化情况进行分析。在IEEE 30母线系统中的仿真结果与利用奇异值分解的弱节点进行对比,验证了利用所提指标进行电压弱节点评估的可行性和有效性。
Based on static energy function,a new method is proposed to assess voltage weak nod e.From the perspective of energy function model,the critical energy value in every node could be obtained from energy function model s.Based on energy information,energy ma rgin indexes are proposed to quantify the margin of system and weak nodes of the system could also be accounted.Reactive devices compensation in these weak nodes with its effects to energy margin are discussed.By comparing the results of singular value decomposition method,the simulations of IEE E-30 bus system demonstrate the validity and practicable of the indexes proposed in assessing voltage weak node.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2010年第14期79-83,共5页
Power System Protection and Control
基金
教育部留学回国人员科研启动基金项目
关键词
静态能量函数
内点法
临界电压
奇异值分解
能量信息
static energy functioni
nterior point method
critical voltage
singular value decomposition method
energy information
