上海交通大学学报

上海交通大学学报 >

2022 , Vol. 56 >Issue 10: 1285 - 1293

DOI: https://doi.org/10.16183/j.cnki.jsjtu.2022.134

新型电力系统与综合能源

基于模型预测控制的分布式储能型风力发电场惯性控制策略

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  • 1.国网湖南省电力有限公司电力科学研究院,长沙 410000
    2.湖南大学 电气与信息工程学院,长沙 410082
沈阳武(1985-),男,湖北省咸宁市人,高级工程师,从事新能源并网控制、电力系统稳定分析研究.E-mail: shenyangwu@126.com.

收稿日期: 2020-06-30

  网络出版日期: 2022-05-19

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Inertial Control Strategy for Wind Farm with Distributed Energy Storage System Based on Model Predictive Control

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  • 1. Electric Power Scientific Research Institute, State Grid Hunan Electric Power Co., Ltd., Changsha 410000, China
    2. College of Electrical and Information Engineering, Hunan University, Changsha 410082, China

Received date: 2020-06-30

  Online published: 2022-05-19

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摘要

分布式储能型(DES)风力发电机组是解决规模化风力发电接入引起系统频率稳定问题的有效手段.提出一种基于模型预测控制(MPC)的分布式储能型风力发电场惯性控制方法,首先建立分布式储能型风力发电场的线性化预测模型,在此基础上结合MPC控制框架,设计考虑储能损耗成本和风机转子转速均衡变化的MPC惯性控制优化模型和策略,以实现惯量控制期间风力发电机组转子转速的均衡变化.仿真结果表明:所提控制策略可以有效协调分布式储能型风力发电机组中风力发电单元和储能系统单元的有功功率输出,降低储能系统的充放电损耗成本,并保证风力发电场内所有风机转速在惯性控制期间趋于平均,避免由于风机转速下降过度而导致风力发电机组退出调频的问题.分布式储能型风力发电场惯性控制策略有利于提高电网频率稳定性,对保障电网的安全运行具有重要意义.

关键词： 风力发电场; 惯性控制; 分布式储能; 模型预测控制

本文引用格式

沈阳武, 宋兴荣, 罗紫韧, 沈非凡, 黄晟 . 基于模型预测控制的分布式储能型风力发电场惯性控制策略[J]. 上海交通大学学报, 2022 , 56(10) : 1285 -1293 . DOI: 10.16183/j.cnki.jsjtu.2022.134

Abstract

Distributed energy storage (DES) wind turbine is an effective means to solve the problem of system frequency stability caused by large-scale wind power connection. In this paper, an inertial control method for DES wind farms based on model predictive control (MPC) is proposed.First, the linearized prediction model of the DES wind farm is established. Then, on this basis, in combination with the control framework of MPC, an optimization model and strategy of MPC inertial control are proposed considering the cost of energy storage loss and the balanced change of wind turbine rotor speed,in order to achieve the balanced change of wind turbine rotor speed during inertia control. The simulation results show that the proposed control strategy can effectively coordinate the active power output of the wind power generation unit and the energy storage system unit in the DES wind turbine, reduce the cost of charging and discharging loss of the energy storage system, and ensure that the rotational speed of all wind turbines in the wind farm tends to be average during the inertial control period, avoiding the problem of wind turbines exiting frequency regulation due to excessive reduction of the rotational speed of wind turbines. The inertial control strategy of the DES wind farm is beneficial to improve the frequency stability of the power grid, which is of great significance to ensure the safe operation of the power grid.

Key words： wind farm; inertial control; distributed energy storage (DES); model predictive control

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