| 引用本文: | 李建林,卢冠铭,游洪灏,等.基于改进LADRC的构网型储能调频控制策略研究[J].电力系统保护与控制,2024,52(15):142-154.[点击复制] |
| LI Jianlin,LU Guanming,YOU Honghao,et al.Frequency regulation control strategy for grid-forming energy storage based on improved LADRC[J].Power System Protection and Control,2024,52(15):142-154[点击复制] |
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| 摘要: |
| 为提升高比例风电渗透下电力系统的频率稳定性，同时解决风储联合系统调频过程中参数间相互影响难以兼顾导致系统调频控制性能不佳的问题，提出一种基于改进型线性自抗扰控制策略(linear active disturbance rejection control, LADRC)的构网型(grid-forming, GFM)储能调频控制策略。首先，在传统应用LADRC对角频率进行快速控制的基础上，引入有功差额补偿，加速有功指令响应速度，消除参数互耦。同时，针对构网型储能调频控制策略参数影响规律，分析了角频率和参考功率至输出功率的小信号模型，推导控制环节传递函数，实现对系统调频性能优化。最后在Matlab/Simulink仿真平台上搭建风储联合系统仿真模型，对不同控制策略在不同工况下电网频率和储能出力的变化情况进行对比分析。结果表明，所提控制策略有效提升复杂工况下风储联合系统对电网频率的支撑能力。 |
| 关键词: 构网型储能 小信号模型 自抗扰控制策略 风储联合系统 频率支撑 |
| DOI：10.19783/j.cnki.pspc.240093 |
| 投稿时间：2024-01-21修订日期：2024-04-11 |
| 基金项目:国家电网公司总部科技项目资助“车网互动关键技术标准、支持工具及应用研究”(5400-202318585A- 3-2-ZN) |
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| Frequency regulation control strategy for grid-forming energy storage based on improved LADRC |
| LI Jianlin1,LU Guanming1,YOU Honghao1,GUO Yajuan2,XIN Dixi1,YUAN Xiaodong2 |
| (1. National User-Side Energy Storage Innovation Research and Development Center (North China University of
Technology), Beijing 100144, China; 2. Electric Power Science Research Institute of State Grid
Jiangsu Electric Power Co., Ltd., Nanjing 211103, China) |
| Abstract: |
| A strategy of grid-forming (GFM) energy storage frequency regulation control based on an improved linear active disturbance rejection control (LADRC) is proposed to help overcome two problems: the frequency stability of a power system with a high proportion of wind power penetration; it is difficult to take into account the interaction between parameters in the process of frequency regulation of a wind-storage combined system, resulting in poor frequency regulation control performance of the system. First, using the fast control of the diagonal frequency of the traditional application LADRC, active power difference compensation is introduced to accelerate the response speed of active power instructions and eliminate parameter cross-coupling. From the influence law of the parameters of the grid-forming energy storage frequency regulation control strategy, a small-signal model of angular frequency and reference power to the output power is analyzed. The transfer function of the control link is deduced to optimize the frequency regulation performance of the system. Finally, a simulation model of the combined wind storage system is built on the Matlab/Simulink simulation platform, and the changes of the power grid frequency and energy storage output in different working conditions are compared and analyzed with different control strategies. The results show that the proposed control strategy effectively improves the support ability of the combined wind storage system to the power grid frequency in complex working conditions. |
| Key words: GFM energy storage small-signal model active disturbance rejection control strategy wind-storage combined system frequency suppor |
