考虑分布式电源的配电网优化规划

Istribution Network Optimal Planning Considering Distributed Generators

分布式电源(DG)的发展给配电网络规划带来了新的挑战。考虑负荷增长,从供电公司的角度,以DG接入投资、线路投资以及电网有功损耗最小为目标函数,建立了配电网节能减损的规划模型,充分利用配电网正常运行呈辐射状网络的特点,采用启发式方法对含DG的配电网进行规划,通过模糊评估算法分析了DG接入对配电网运行带来的影响,进而引入协调系数,对目标函数进行优化。算例计算结果验证了所提出的模型和算法的有效性。

With the development of distributed generation（DG）,planning of electric distribution system are confronted with new challenges.Considering of the increase of loads,an optimal planning model of distribution network is proposed to achieve multi-objectives which are consisted of minimum investment of DGs and transmission lines,and the minimum power loss of distribution network.Heuristic method is adapted to solve the problem by taking full advantage of distribution network’s radial characteristics.And the impact on power system of DG is analyzed by the fuzzy evaluation algorithm.The objective function is optimized by introducing coordination coefficient.The results of test example prove the validity of the proposed model and algorithm.