发电技术 ›› 2024, Vol. 45 ›› Issue (4): 772-780.DOI: 10.12096/j.2096-4528.pgt.23035

• 智能电网 • 上一篇    

基于虚拟同步机控制参数自适应调节的储能系统调频方法

张崇1, 李博1, 李笑宇2, 刘洪波3, 刘永发3   

  1. 1.国网天津市电力公司滨海供电分公司,天津市 滨海新区 300450
    2.国网丹东市供电 公司,辽宁省 丹东市 118000
    3.东北电力大学电气工程学院,吉林省 吉林市 132000
  • 收稿日期:2023-11-22 修回日期:2024-03-01 出版日期:2024-08-31 发布日期:2024-08-27
  • 通讯作者: 刘洪波
  • 作者简介:张崇(1997),男,硕士,研究方向为储能系统的容量及控制参数配置、电网频率支撑及调节工作, neepu1997@163.com
    李博(1997),男,硕士,研究方向为直流微网控制策略研究、直流变换器拓扑结构分析, libo_tjdx@tju.edu.cn
    李笑宇(1994),男,硕士,助理工程师,研究方向为柔性直流输电技术、电网的暂态稳定性问题分析等, 719199235@qq.com
    刘洪波(1973),女,博士,教授,研究方向为电力系统规划运行、电力系统稳定与控制,本文通信作者, liuhb@neepu.edu.cn
    刘永发(1998),男,硕士研究生,研究方向为储能系统参与电网调频的控制与分析, l13455911156@163.com
  • 基金资助:
    国家重点研发计划项目(2017YFB0902000)

A Frequency Regulation Method of Energy Storage System Based on Adaptive Adjustment of Virtual Synchronous Generator Control Parameters

Chong ZHANG1, Bo LI1, Xiaoyu LI2, Hongbo LIU3, Yongfa LIU3   

  1. 1.State Grid Tianjin Electric Power Company Binhai Power Supply Branch, Binhai New Area, Tianjin 300450, China
    2.State Grid Dandong Power Supply Company, Dandong 118000, Liaoning Province, China
    3.School of Electrical Engineering, Northeast Electric Power University, Jilin 132000, Jilin Province, China
  • Received:2023-11-22 Revised:2024-03-01 Published:2024-08-31 Online:2024-08-27
  • Contact: Hongbo LIU
  • Supported by:
    National Key Research and Development Program of China(2017YFB0902000)

摘要:

目的 风电的大规模渗透一定程度上降低了电力系统的调频能力,储能作为一种相对成熟、行之有效的技术手段,被广泛用于电网调频。为此,研究了储能系统在虚拟同步机控制下参与电网调频的响应过程及优化配置。 方法 基于DIgSILENT/PowerFactory仿真软件搭建储能控制模型与电力系统,对系统投入储能前后的频率响应特性进行分析。进一步,考虑风电机组在不同出力模式下的备用容量,通过风速区间的划分与风电机组功率预留系数的确定,优化储能系统的配置结果,实现储能系统调频系数的自适应调整。 结果 储能的投入能够有效改善系统频率响应、减少弃风。通过合理预留风电机组自身调频容量,储能系统可以为电网提供可靠的功率支撑。 结论 基于风机风速与输出功率的储能系统调频系数自适应调整方法,能够在满足系统调频需求的同时有效减小储能系统的超调量和输出功率,延长储能工作时间。

关键词: 双碳, 储能, 新能源, 风电, 虚拟同步机, 频率响应, 调频

Abstract:

Objectives The large-scale penetration of wind power has reduced the frequency regulation capability of the power system to a certain extent.As a relatively mature and effective technical means, the energy storage system is widely used in power grid frequency regulation. Therefore, the response process and optimal configuration of energy storage system (ESS) participating in power grid frequency regulation under the control of virtual synchronous generator were studied. Methods Based on the simulation software DIgSILENT/PowerFactory, an ESS control model and typical power system were constructed to analyze the frequency response characteristics of the grid before and after the ESS participation. Furthermore, considering the reserve capacity of wind turbines under different output modes, the configuration results of the ESS were optimized by dividing the wind speed range and determining the wind turbine power reserve coefficient, so as to realize the adaptive adjustment of the frequency regulation coefficient of the ESS. Results The investment of the ESS can effectively improve the frequency response and reduce wind curtailment of the system. By reserving the frequency regulation capacity of wind turbines reasonably, the ESS can provide reliable power support for the power grid. Conclusions The self-adaptive adjustment method of the frequency regulation coefficient of the ESS based on the wind speed and the output power of fans can effectively reduce the overshoot and the output power of the ESS while meeting the frequency regulation requirements, thereby extending the working time.

Key words: double carbon, energy storage, new energy, wind power, virtual synchronous generator, frequency response, frequency regulation

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