含分布式能源的配电网实时最优潮流分布式算法

Distributed Algorithm of Real-time Optimal Power Flow for Distribution Network with Distributed Energy Resource

提出一种含分布式能源的配电网实时最优潮流分布式算法。首先,该算法在获取电压状态量的实时数据后,利用原问题的二阶泰勒展开对状态量进行一次修正,并将修正结果用于控制量的计算和分布式能源的功率控制,给出了该方法在连续执行后的可行性分析。然后,利用海森阵的稀疏特性,提出了海森阵元素的分解、并行计算方法和修正方程的分布式高斯消去法,从而实现算法的分布式求解。最后,通过算例分析验证了所提算法的可行性和有效性。

This paper proposes a distributed algorithm of real-time optimal power flow for distribution systems with distributed energy resources(DERs).First,after obtaining the real-time data of the voltage state variables,the algorithm uses the secondorder Taylor expansion of the original problem to correct the state variables,and uses the correction result in the calculation of control variables and the power control of DER.This paper gives the feasibility analysis of the proposed algorithm after continuous execution.Then,taking advantages of the sparse characteristics of the Hessian matrix,the decomposition and parallel calculation methods for the Hessian matrix elements and the distributed Gaussian elimination method for the correction equation are proposed to realize the distributed solution of the algorithm.Finally,the feasibility and effectiveness of the proposed algorithm are verified through the case analysis.