摘要
传统潮流计算对系统节点注入功率的需求比较严格,计算时需要提供除平衡节点外的所有节点的注入有功功率及所有PQ节点的注入无功功率,这往往导致能量管理系统中的潮流计算因缺少注入功率而无法顺利进行。为此提出使用支路功率代替部分注入功率进行功率扩展潮流计算的方法,推导了含支路功率方程的功率扩展潮流计算的修正方程;同时提出了从支路功率中选取替代功率的系数矩阵法,并建立了功率扩展潮流计算可解的判据。最后给出了算法整体流程,并在IEEE14和IEEE 118节点系统上做了算例仿真,结果表明运用系数矩阵法及功率扩展潮流法在一定程度上可解决能量管理系统中潮流计算原始数据采集不足无法计算的问题。
The traditional load flow calculation, which has a strict requirement for power type, needs the injection active power of all nodes except the balance node, and the injection reactive power of all PQ nodes. The strict requirement often leads to the load flow calculation failure due to the lack of injection power. This paper presents extended-power load flow which makes use of branch power as substitutes for the missing injection power. The modified equation of the new method are deduced. The coefficient matrix method is also proposed to select the alternative branch power and the criterion to judge whether the power flow calculation has solutions is built. The algorithm process is given and simulation is done on IEEE 14 and IEEE-118 system. The results show that the existed problem can be solved based on the extended-power load flow and the coefficient matrix.
出处
《电工技术学报》
EI
CSCD
北大核心
2013年第6期208-215,共8页
Transactions of China Electrotechnical Society
基金
国家自然科学基金资助项目(61071201)
关键词
功率扩展
潮流计算
支路功率
系数矩阵
Extended-power
load flow calculation
branch power
coefficient matrix
