飞轮储能辅助风电一次调频仿真分析

doi:10.19799/j.cnki.2095-4239.2022.0489

摘要/Abstract

摘要：

随着风电比重的迅速增加，电力系统的频率稳定性问题也愈加严重。基于Matlab/simulink仿真研究在一定风电渗透率的区域电网中，采用飞轮储能辅助风电进行一次调频的作用和效果。首先，采用简化的线性频率控制建立飞轮储能辅助风电一次调频控制模型，根据传递函数分析飞轮储能参与一次调频的频率特性，然后在负荷功率发生阶跃扰动和连续扰动的情况下，通过时域仿真对区域电网频率特性进行仿真论证，通过对比得出结论，配置一定比例的飞轮储能系统可以迅速响应频率偏差信号，在一次调频仿真过程中系统最大频率偏差以及稳态偏差都得以减少，满足电力系统的性能指标要求，有效提高系统的频率质量。

关键词: 飞轮储能, 风电机组, 频率特性, 一次调频

Abstract:

With increasing wind power, the frequency stability of power systems is getting increasingly serious. The impact of primary frequency control supported by flywheel energy storage is examined through Matlab/Simulink simulation under certain wind power penetration. First, the simplified linear frequency control is used to establish the primary frequency regulation control model of the flywheel energy storage auxiliary wind power, and the frequency characteristics of the flywheel energy storage participating in primary frequency regulation are analyzed in accordance with the transfer function. Then, the frequency characteristics of a regional power grid in the case of step and continuous disruptions of load power were examined. Comparatively, it was found that a certain proportion of flywheel energy storage systems could quickly react to the frequency deviation signal, and the maximum frequency and steady-state deviations of the system are reduced in the primary frequency modulation simulation process, which meets the performance index requirements of the power system and significantly enhances the frequency quality of wind power.

Key words: flywheel energy storage, wind power, frequency characteristics, primary frequency modulation

中图分类号:

TM 73

陈俊涛, 王亚军, 宋顺一, 曲文浩, 柳亦兵. 飞轮储能辅助风电一次调频仿真分析[J]. 储能科学与技术, 2023, 12(1): 172-179.

Juntao CHEN, Yajun WANG, Shunyi SONG, Wenhao QU, Yibing LIU. Simulation of the primary frequency modulation process of wind power with an auxiliary flywheel energy storage[J]. Energy Storage Science and Technology, 2023, 12(1): 172-179.

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性能指标	标准
频率变化率幅值/(Hz/s)	<0.5
频率低谷/高峰时频率偏移/Hz	<0.2
稳态频率/Hz	49.8～50.2
一次调频投入时间/s	<20

参数	数值
M/s	12
D	0.01
R/pu	0.05
a/s	0.333
T/s	6
K_W/K_F	25
T_W /s	1.5
T_F/s	0.03

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