不同类型分布式电源在配电网中的优化布置

分布式电源接入配电网后对电网节点电压、网络潮流、网损等方面带来的影响与分布式电源的种类、接入容量及接入位置密切相关。本文基于静态负荷模型,对小水电、光伏发电两种典型分布式电源与储能设备进行了研究。通过分析不同分布式电源的稳态输出特性,将不同分布式电源的出力特征与电力系统中潮流、电压不越限等约束条件相结合,以网损最小为目标函数提出了小水电、光伏发电与储能设备的优化布置函数。结论表明考虑出力差异性后,不同分布式电源的最优布置计算结果具有明显区别,相比将分布式电源当作常规电源出力将更加精确。

The Optimal Placement of Different Types of Distributed Generation in Distribution Network

The impacts of distributed generation(DG) on note voltage,power flow and power loss depend on its types,capacity and location.Based on the static load model,the research on two kinds of DGs(small hydropower plants and PV) and storage devices is carried out.Through the analysis on the steady-state output characteristics of different DGs,the optimized placement function of small hydropower plants,PV and storage devices is proposed with the objective of minimum network loss by combining output characteristics of different DGs and such constraints conditions as the limitation of power flow and voltage.The conclusions show that the results are varied for different types of DGs,and it is necessary to consider the steady-state characteristics for different types of DG for more accurate results.