摘要
新能源配网节点间都是属于弱连接的状态,目标规划呈现单一性,导致电压稳定性、网损改善率下降。基于此,提出了分布式新能源配网网架多目标规划模型,引入电流、电压等式约束与不等式约束条件,提高配网节点连接稳定性,以DG投资成本、配电网网架损耗费用、可靠性损失费用、购电费用作为目标函数,运用最大离差方法计算5个指标的权重,归一化权重获取最优解,构建多目标规划模型。实例测试结果表明:多目标规划模型经济效益较高,电压稳定性较高,且网损改善率较高,解决了传统单目标规划方法存在的问题。
The nodes of new energy distribution network are all in the state of weak connection and the goal programming is single,which leads to the decrease of voltage stability and transmission loss improvement rate.Based on this,a multi-objective programming model of new energy distribution network grid is put forward,introducing current,voltage constraints and unequal constraints conditions,to improve the connective stability of the distribution network nodes.Taking DG investment cost,distribution network grid loss cost,reliability loss cost and power purchase cost as objective functions,the weights of five indexes are calculated by the maximum deviation method,the optimal solution is obtained by normalizing the weights and the multi-objective programming model is constructed.The instance test results show that the multi-objective programming model provides higher economic benefits,higher voltage stability and higher improvement rate of transmission loss,which solves the problems that exist in traditional single objective programming method.
作者
张军
贺晋宏
贺子清
ZHANG Jun;HE Jinhong;HE Ziqing(State Grid Gansu Electric Power Corporation,Lanzhou,Gansu 730030,China;State Grid Shanxi Electric Power Corporation,Taiyuan,Shanxi 030021,China;Maintenance Branch of State Grid Beijing Electric Power Corporation,Beijing 100069,China)
出处
《山西电力》
2020年第4期1-6,共6页
Shanxi Electric Power
关键词
新能源
配网网架
等式约束
不等式约束
最大离差
多目标规划
new energy
distribution network grid
equal constraints
unequal constraints
maximum deviation
multi-objective programming
作者简介
张军(1975),男,甘肃武威人,1999年毕业于华北电力大学电力系统及其自动化专业,高级工程师,从事电网规划、新能源工作;贺晋宏(1966),男,陕西清涧人,2002年毕业于华北电力大学电气工程专业,高级工程师,从事能源互联网、电网规划工作;贺子清(1994),女,山西临汾人,2015年毕业于华北电力大学电力系统及其自动化专业,从事二次运检、人力资源工作。
