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Position: Home > Articles > Reactive power optimal approach in rural power network considering load uncertainty Transactions of the Chinese Society of Agricultural Engineering 2009,25 (9) 182-187

计及负荷不确定性的农网无功优化方法

作  者：
孟晓芳;朴在林;王珏
单  位：
沈阳农业大学信息与电气工程学院
关键词：
电网;无功功率;不确定分析;农村电力网;无功优化;计算支出费用
摘  要：
为了提高农网无功优化的降损效果及适应能力,考虑了影响负荷统计的不确定因素,设定负荷系数和功率因数为模糊数,对农网的负荷进行分析,确定三阶梯的负荷分布。根据已知节点电压和干线首端的功率,分析潮流确定主干线,按最大负荷时网络损耗最小确定补偿位置,然后以计算支出费用最少为目标确定无功补偿容量的上下限。以内蒙古自治区赤峰市克什克腾旗实际电力网的干线为例,进行计算、分析和比较,结果表明,该文提出的方法在负荷变动时降损效果明显,可以适应农网的无功优化的需要。
译  名：
Reactive power optimal approach in rural power network considering load uncertainty
作  者：
Meng Xiaofang,Piao Zailin,Wang Jue(College of Information and Electric Engineering,Shenyang Agricultural University,Shenyang 110161,China)
关键词：
electric network,reactive power,uncertainty analysis,rural power network,reactive power optimization,accounting expenditure cost
摘  要：
In order to improve the adaptability and validity of reactive power optimization,the load uncertainties were accounted in this paper,and load coefficient and power factor were taken as fuzzy number.In this application,after load data analyzed,three load levels were given.The basis of known node voltage and sending end power of the feeder,and the main line was determined after the power flow analysis.According to the optimum of power losses at the maximum load to determine the var compensation positions,and then the upper and lower limits of reactive power compensation capacity was calculated for the least accounting expenditure cost.The method proposed was applied to a real grid example of Keshike Teng County,Chifeng,Inner Mongolia for illustration.By calculation,analysis and comparison,the results show that the loss is significantly reduced for the method when the loads are changed,and the method can adapt to the needs of reactive power optimization of the rural power network.

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