基于多源储能节点拓扑特征的交直流新能源电网功率平衡分区控制

Power partition control of AC/DC new energy grid based on multi-source energy storage node topology

针对接入大规模分布式储能及新能源的交直流混联电网,在电网负荷需求与新能源出力动态波动下的功率平衡控制问题,提出一种基于多种类节点马尔科夫随机场的电网功率不平衡扰动动态分区模型。首先,研究交直流新能源电网节点拓扑结构中蕴含的多能源与交直流同质化及能量交互信息,建立基于节点拓扑能量关联度的适用于功率平衡控制的电网分区模型;其次,在节点拓扑能量关联度模型基础上,提出基于现有电网分区内多源储能节点拓扑关联度高阶先验模型的分区动态优化算法;最后,在东北某新能源大规模交直流送端电网实际运行数据的基础上,建立基于多源分布式储能的电网功率平衡分区控制仿真模型。仿真结果表明,文章建立的模型与算法能够有效协调多源储能与交直流运行状态,实现交直流新能源电网中功率扰动的动态优化控制。

Aiming at the problem of power balance control under large-scale distributed energy storage and new energy in the AC-DC hybrid power grid under dynamic load fluctuations of the grid load demand and new energy output,a power grid based on Markov random fields of multiple nodes is proposed Dynamic unbalanced disturbance dynamic partition model.First,study the multi-energy and AC-DC homogenization and energy interaction information contained in the node topology of the AC and DC new energy grid,and establish a grid partition model suitable for power balance control based on the node topology energy correlation;second,in the node topology On the basis of the energy correlation model,a partition dynamic optimization algorithm based on the high-order prior model of the multi-source energy storage node topology correlation in the existing power grid partition is established;finally,the actual operation data of the transmission network sent by a large-scale AC and DC power source from a new energy source in the northeast of China On the basis of this,a simulation model of grid power balance partition control based on multi-source distributed energy storage is established.The simulation results show that the model and algorithm established in this paper can effectively coordinate the multisource energy storage and AC and DC operating states,and realize the AC and DC new energy grid.Dynamic optimization control of power disturbance.