基于静态能量函数法确定交直流系统最优无功补偿点  

Optimum reactive compensation position determination based on static energy function for AC/DC power system

作　　者：郑武[1] 李华强[1] 陈静[1] 肖先勇[1] 

机构地区：[1]四川大学电气信息学院,四川成都610065

出　　处：《电力自动化设备》2010年第8期45-49,共5页Electric Power Automation Equipment

摘　　要：由负荷节点的能量函数表达式,提出趋势指标和裕度指标分别用于判断交直流系统的最优无功补偿点和量化系统的裕度。在候选点处进行无功补偿,并对无功补偿前后交直流系统的能量裕度、临界电压和临界能量值进行分析。经不同补偿方案下补偿效果的对比以及趋势指标与奇异值分解法计算的弱节点进行对比,验证了基于静态能量函数法选取的交直流系统最优无功补偿点是准确、有效的。Based on the static energy function of load node,it is proposed to apply the tendency index to determine the optimum reactive compensation position of AC/DC power system while the margin index to quantify the system margin.The energy margin,critical voltage and critical energy before and after reactive compensation are analyzed for the weak nodes of AC/DC power system.Compensation effect is compared among different schemes and the candidate weak nodes are compared between tendency index method and singular value decomposition method.The results show the validity and accuracy of the proposed method.

关 键 词：交直流系统 静态能量函数 内点法 临界电压 奇异值分解 能量信息 无功补偿 

分 类 号：TM714.3[电气工程—电力系统及自动化]