含分布式电源的地区电网无功电压优化  

Reactive Power and Voltage Optimization of the District Grid with Distributed Generators

作　　者：余昆[1,2] 曹一家[1] 陈星莺[2] 郭创新[1] 董成明[2] 

机构地区：[1]浙江大学电气工程学院,浙江省杭州市310027 [2]河海大学能源与电气学院,江苏省南京市210098

出　　处：《电力系统自动化》2011年第8期28-32,共5页Automation of Electric Power Systems

基　　金：国家自然科学基金资助项目(51077043);中央高校基本科研业务费专项资金资助项目(2010B06014);浙江省自然科学基金资助项目(R107062)~~

摘　　要：随着地区电网中分布式电源的增多,一些分布式电源出力的不确定性对无功电压优化的效果影响较大。通过分析太阳能光伏发电和风力发电的模糊特性,提出建立梯形模糊数表示分布式电源出力的地区电网无功电压优化模型。将目标函数和约束条件模糊化,并利用其隶属度函数形成模糊适应度函数,通过灵敏度计算选择最有效的控制设备参与遗传操作,并且采用单点交叉算子以适应浮点数和整数混合编码。实际地区电网数据仿真结果表明所用模型和算法切实可行。With the increasing of distributed generators（DGs）,the effect of reactive power and voltage optimization can be problematic due to the uncertainty of DGs outputs.Using fuzzy characteristics of photovoltaic generation and wind power generation,the model of reactive power and voltage optimization in a district grid is proposed.The output of DGs is expressed by trapezoidal fuzzy number in this model.The fuzzy fitness function is formed based on the membership function of the object function and constraints.The most sensitive control devices are selected to carry on genetic operators by sensitivity calculation.Single point crossover operator is used in the algorithms in order to adapt to the mixed encoding of floating point numbers and integers.Actual district grid data is used to simulate and the results show that the model and algorithm are feasible.

关 键 词：无功电压优化 分布式电源 不确定性 梯形模糊数 地区电网 

分 类 号：TM714[电气工程—电力系统及自动化]