基于储能的电力系统潮流协调优化控制策略  

Optimal Control Strategy of Power Flow Coordination Based on Energy Storage

作　　者：李美妍 吴俊玲 陆润钊 秦晓辉 张健 LI Meiyan;WU Junling;LU Runzhao;QIN Xiaohui;ZHANG Jian(School of Electrical Engineering,Northeast Electric Power University,Jilin Jilin 132012;China Electric Power Research Institute,Beijing 100192)

机构地区：[1]东北电力大学电气工程学院,吉林吉林132012 [2]中国电力科学研究院有限公司,北京100192

出　　处：《东北电力大学学报》2023年第6期17-22,共6页Journal of Northeast Electric Power University

基　　金：国家电网公司科技项目(5100-202055004A-0-0-00)。

摘　　要：储能具有双向的快速功率吞吐能力且布局灵活,通过采用定制化的控制策略可以作为电力系统潮流控制的有效手段。针对高比例新能源电力系统因源荷波动或元件故障引起的局部输变电设备短时潮流越限问题,提出一种基于规模化储能的电力系统潮流分散协调优化控制策略。首先,基于储能的冲击能量和各支路的权重系数提出综合控制灵敏度,剔除对待调整支路控制效果较弱的可控储能节点,实现可控储能节点的优选;其次,构建以总控制代价最小为目标的动态优化模型,采用大M法将动态优化模型转化为线性优化模型,旨在考虑储能出力调整量和参与调整设备数最小,并制定优化控制策略;最后,基于改进的IEEE RTS24节点系统验证所提策略的有效性和合理性。Energy storage has bidirectional fast power throughput and flexible layout,customized control strategy can be an effective means of power flow control in power system.Aiming at the short-term overload problem of local transmission and transformation equipment caused by source load fluctuation or component failure in a high proportion of new energy power system,a power flow decentralized coordinated optimal control strategy based on large-scale energy storage is proposed.Firstly,based on the impact energy of energy storage and the weight coefficient of each branch,the comprehensive control sensitivity is proposed,the controllable energy storage nodes with weak off-limit control effect on to be adjust branch were eliminated to realize the optimization of controllable energy storage nodes.Secondly,the dynamic optimization model is constructed with the goal of minimizing the total control cost,and the dynamic optimization model is transformed into a linear optimization model by using the big M method,the purpose is to consider the energy storage capacity adjustment and the minimum number of equipment involved in adjustment,and to develop an optimal control strategy.Finally,the effectiveness and rationality of the proposed strategy are verified based on the improved IEEE RTS24 bus system.

关 键 词：新能源 储能 分散协调 综合控制灵敏度 控制策略 

分 类 号：TM711[电气工程—电力系统及自动化]