新型电力系统场景下网侧规模化储能二次调频控制策略

doi:10.3969/j.issn.2097-0706.2024.02.008

综合智慧能源 ›› 2024, Vol. 46 ›› Issue (2): 59-67.doi: 10.3969/j.issn.2097-0706.2024.02.008

新型电力系统场景下网侧规模化储能二次调频控制策略

孙娜¹(), 董海鹰¹^,^*(), 陈薇¹, 马虎林²

1.兰州交通大学新能源与动力工程学院，兰州 730070
2.中广核太阳能嘉峪关有限公司，兰州 735100

收稿日期:2023-05-29 修回日期:2023-06-14 出版日期:2024-02-25 发布日期:2023-08-16
通讯作者: *董海鹰（1966），男，教授，博士，从事储能系统运行控制、新能源发电方面的研究，hydong@mail.lzjtu.cn。
作者简介:孙娜（1977），女，副教授，硕士，从事储能系统运行控制、新能源发电方面的研究， sunna@mail.lzjtu.cn；
基金资助:
嘉峪关市科技计划项目(22-35)

Secondary frequency modulation control strategy for large-scale grid-side energy storage devices in new power systems

SUN Na¹(), DONG Haiying¹^,^*(), CHEN Wei¹, MA Hulin²

1. School of New Energy and Power Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China
2. CGN Solar Energy Jiayuguan Company Limited, Lanzhou 735100, China

Received:2023-05-29 Revised:2023-06-14 Online:2024-02-25 Published:2023-08-16
Contact: DONG Haiying
Supported by:
Jiayuguan City Science and Technology Plan Project(22-35)

摘要/Abstract

摘要：

针对大规模新能源并网时造成的新型电力系统频率波动问题，在新型电力系统场景下兼顾电网调频需求及储能调频能力提出一种网侧规模化储能二次调频控制策略。基于电网调频需求，对储能系统响应自动发电控制指令时的双信号自适应切换控制进行研究，在充分发挥两种调频信号优势的同时使储能系统更好地配合响应调频指令；考虑储能机组的技术特性，利用模糊控制对各储能单元的出力深度进行均衡控制，在维持其荷电状态的同时能够将频率偏差的波动以更快的速度控制在更小的范围内；最后在Matlab/Simulink中对所提控制策略进行仿真验证。结果表明，所提控制策略能够快速抑制频率偏差在更小的范围内、避免储能系统过充过放以及有效维持各组储能单元荷电水平。

关键词: 新型电力系统, 自动发电控制, 二次调频, 储能, 模糊控制, 均衡控制, 荷电状态

Abstract:

In view of the frequency fluctuation of the new power system caused by large-scale new energy grid connection, a secondary frequency modulation control strategy for grid-side energy storage devices is proposed, which takes the grid frequency modulation demand and batteries'frequency modulation capability into account. Based on the frequency modulation requirements of the power grid, the dual-signal adaptive switching control for the energy storage system in response to automatic power generation control instructions takes the advantages of the two frequency modulation signals，improving the frequency modulation command response capacity. Then, the frequency deviation can be controlled in a smaller range by this method. The proposed control strategy is verified by Matlab/Simulink, and the results show that the strategy, being able to suppress the frequency deviation, can effectively avoid overcharging and over-discharging of the energy storage system and maintain the SOC of each energy storage units.

Key words: new power system, automatic generation control, secondary frequency regulation, energy storage, fuzzy control, equalization control, state of charge

中图分类号:

TK01

孙娜, 董海鹰, 陈薇, 马虎林. 新型电力系统场景下网侧规模化储能二次调频控制策略[J]. 综合智慧能源, 2024, 46(2): 59-67.

SUN Na, DONG Haiying, CHEN Wei, MA Hulin. Secondary frequency modulation control strategy for large-scale grid-side energy storage devices in new power systems[J]. Integrated Intelligent Energy, 2024, 46(2): 59-67.

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参考文献 20

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参数	定义
ΔP_tie/MW	系统联络线功率偏差
ΔP_F1(s)/MW	传统电源一次调频出力
ΔP_G1(s)/MW	传统电源二次调频出力
ΔP_Bj(s)/MW	各储能单元二次调频出力
ΔP_S1(s)/MW	二次调频总出力
ΔP_L1(s)/MW	负荷增量
Δf₁(s)/Hz	频率偏差
K_I1	比例-积分（PI）控制器参数
K_P1	PI控制器参数
K₁	传统电源一次调频系数
G_g1(s)	传统电源机组模型
G_Bj(s)	储能系统模型
β₁	电力系统偏差系数
M₁	系统旋转惯量
D₁	系统阻尼系数
T₁₂	2个区域的容量延迟系数
a₁₂	2个区域的容量换算系数

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储能系统	功率备用
储能单元1	-60~60
储能单元2	-50~50
储能单元3	-40~40
储能单元4	-30~30

参数	数值
M₁，M₂	10
D₁，D₂	1
β₁，β₂	-21
K_P1，K_P2	-0.822
K_I1，K_I2	-0.16
T_B	0.01
K_B	21
T_G	0.08
T_CH，T_RH	0.3，10.0
F_HP	0.5
T₁₂	1.59
a₁₂	0.2

新型电力系统场景下网侧规模化储能二次调频控制策略

Secondary frequency modulation control strategy for large-scale grid-side energy storage devices in new power systems

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