基于矩母函数的风电场群快速调频策略

张建华; 王永岳

doi:10.19805/j.cnki.jcspe.2025.250250

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基于矩母函数的风电场群快速调频策略

更新时间：2026-10-10

- 基于矩母函数的风电场群快速调频策略
- Fast Frequency Regulation Strategy for Wind Farm Cluster Based on Moment Generating Function
- 动力工程学报 2025年45卷第10期页码：1680-1688
- 作者机构：
  
  1. 华北电力大学控制与计算机工程学院,北京,102206
  2. 华北电力大学新能源电力系统全国重点实验室,北京,102206
- 作者简介：
- 基金信息：
  
  国家重点研发计划资助项目(2019YFB1505400);国家自然科学基金资助项目(62473151)
- DOI：10.19805/j.cnki.jcspe.2025.250250
  中图分类号：
- 网络首发：2025-05-27，
  
  纸质出版：2025
- 稿件说明：
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张建华,王永岳. 基于矩母函数的风电场群快速调频策略动力工程学报, 2025, 45(10): 1680-1688 https://doi.

org/10.19805/j.cnki.jcspe.2025.250250
张建华,王永岳. 基于矩母函数的风电场群快速调频策略动力工程学报, 2025, 45(10): 1680-1688 https://doi. DOI： 10.19805/j.cnki.jcspe.2025.250250.

org/10.19805/j.cnki.jcspe.2025.250250 DOI：

摘要

为应对高渗透风电接入电力系统引发的频率随机波动问题

提出了一种基于矩母函数的快速调频策略。通过采集风电场中每台风电机组接入点处的局部频率及监控调度中心频率得到全局频率数据

获得了当前时刻的频率偏差信号。利用核密度估计技术求取了频率偏差的概率密度函数(probability density function

PDF)

进而构建了基于矩母函数的频率偏差随机分布模型及频率控制系统性能指标。通过优化求解获得了频率控制的解析解

并且分析了频率控制系统的稳定性。依托国内某1 100 MW风-火耦合电力系统进行仿真实验。结果表明:在负荷扰动和风速扰动2种场景下

提出的快速频率控制策略能将公共连接点及各风电机组准稳态频率偏差均控制在±0.02 Hz以内

频率偏差的PDF在零附近保持分布集中、峰值突出的特征

相比于传统下垂控制

准稳态频率偏差波动幅度降低超过80%

最低频率提升约0.05 Hz。研究结果验证了所提出的快速调频策略能够有效抑制风速和负荷不确定性带来的频率波动。

Abstract

To address the frequency random fluctuation caused by high-penetration wind power integrated with power system

a fast frequency regulation strategy was proposed based on moment generating function. Firstly

through collecting the local frequency data at connection points of each wind turbine in wind farm

and obtaining the frequency data by monitoring the dispatch center

the frequency deviation signal at current moment was obtained. Secondly

the probability density function (PDF) of frequency deviation was calculated with kernel density estimation

so as to establish a random distribution model of frequency deviation based on the moment generating function

and performance indicators for frequency control system. Thirdly

an analytical solution for frequency control was obtained after optimization solution

and the stability of frequency control system was analyzed. After which

simulation experiments were conducted on a domestic 1 100 MW wind-thermal hybrid power system. Results show that

under both of load and wind speed disturbance conditions

the proposed fast frequency control strategy can maintain the quasi-steady-state frequency deviation of the points of common coupling and each wind turbine within ±0.02 Hz

while the PDF of frequency deviation exhibits a sharp peak and remains a concentrated distribution around zero. Compared with the traditional droop control

the deviation range of quasi-steady-state frequency is reduced by over 80%

and the nadir of frequency is increased by about 0.05 Hz. Relevant results verify the effectiveness of the proposed strategy in mitigating the frequency fluctuation caused by wind speed and load disturbances.

关键词

Keywords

references

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