Coordination Control Strategy of Energy Storage Participating in Grid Voltage Regulation and Dynamic Reactive Power Support

doi:10.16628/j.cnki.2095-8188.2020.10.012

Abstract

Abstract:

In order to expand the application space of battery energy storage power stations and improve the power grid voltage regulation capability,a coordinated control strategy for energy storage applied to grid voltage regulation and dynamic reactive power support was proposed.Based on the active-reactive power(PQ) control mode of the energy storage power conversion system,the grid voltage stability condition is taken as the constraint,and the goal is to provide reactive power support to the grid quickly and accurately.A basic reactive power control strategy is proposed.Based on it,the voltage state perception index is constructed to accurately describe the current grid operation state,and then identify the grid state and propose a coordinated reactive power control strategy.The simulation verification shows that the proposed strategy is highly reliable,and energy storage can play its rapid response advantages in both auxiliary conventional voltage regulation and dynamic reactive power support,and has a significant improvement effect on the grid voltage.

Key words: energy storage power station, voltage regulation, dynamic reactive support, state perception, coordinated control

CLC Number:

TM734

HUANG Jiyuan, HUANG Keqi, YANG Jun, HUANG Zhiguo, ZHANG Bingyu, ZENG Linjun. Coordination Control Strategy of Energy Storage Participating in Grid Voltage Regulation and Dynamic Reactive Power Support[J]. LOW VOLTAGE APPARATUS, 2020, 0(10): 77-83.

Figures/Tables 12

References 15

[1]	李建林, 靳文涛, 惠东, 等. 大规模储能在可再生能源发电中典型应用及技术走向[J].电器与能效管理技术, 2016(14):9-14,61.
[2]	陆立民, 褚国伟, 吴雅楠, 等. 储能参与电网电压调节研究综述[J].电器与能效管理技术, 2019(20):10-18.
[3]	陈永翀, 李爱晶, 刘丹丹, 等. 储能技术在能源互联网系统中应用与发展展望[J].电器与能效管理技术, 2015(24):39-44.
[4]	李建林, 谭宇良, 赵锦, 等.电网侧储能发展态势及技术走向[J].电力科学与工程, 2020(5):1-6.
[5]	李清然, 张建成, 等.分布式光伏对配电网电能质量的影响及调压方案[J].电力科学与工程, 2015(10):1-6.
[6]	周林, 晁阳, 廖波, 等. 低压网络中并网光伏逆变器调压策略[J]. 电网技术, 2013,37(9):2427-2432.
[7]	刘辉, 邓长虹, 张志刚, 等. 基于光伏逆变器功率协调控制的电压调节方法[J]. 现代电力, 2016,33(5):18-23.
[8]	李振坤, 鲍新雨, 邵宇鹰, 等. 考虑多种调压措施的分布式光伏消纳能力研究[J]. 电力系统保护与控制, 2018,46(8):10-16.
[9]	LE H T, SANTOSO S. Increasing wind farm transient stability by dynamic reactive compensation:Synchronous-machine-based ESS versus SVC:2010 IEEE Conference Power and Energy Society General Meeting[C]. 2010.
[10]	LIU X, AICHHORN A, LIU L, et al. Coordinated control of distributed energy storage system with tap changer transformers for voltage rise mitigation under high photovoltaic penetration[J]. IEEE Transactions on Smart Grid, 2012,3(2):897-906. doi: 10.1109/TSG.2011.2177501
[11]	LEE S J, KIM J H, KIM C H, et al. Coordinated control algorithm for distributed battery energy storage systems for mitigating voltage and frequency deviations[J]. IEEE Transactions on Smart Grid, 2017,7(3):1713-1722. doi: 10.1109/TSG.2015.2429919
[12]	刘娇娇. 全钒液流电池并/离网系统研究[J].电器与能效管理技术, 2016(16):78-82.
[13]	黄际元, 杨俊, 李欣然, 等. 面向电网的电池储能系统直流侧统一等效模型[J].电器与能效管理技术, 2019(2):60-66.
[14]	孙亚璐, 王鑫, 宋汶秦, 等. 适应集群风光电接入系统的机-场-群-网无功电压协调控制[J].电器与能效管理技术, 2017(6):63-66,82.
[15]	李宪栋, 石月春. 电池储能系统电压支持技术仿真研究[J]. 电气技术, 2017,18(8):59-64.

参数	取值
线路参数X/H	3.369e-3
电压极小值U_min/p.u.	0.822 5
电压极大值U_max/p.u.	0.9
时间极小值T_min/s	0.015
时间极大值T_max/s	0.055
调节系数M₀	432.96
惯性系数M₁	-1e6
积分系数M₂	28 864
指标反馈系数K	0.65

控制策略	λ_u/%
无储能	54.72
下垂控制	65.06
协调无功控制策略	97.31

控制策略	γ(t)_max
无储能	100
下垂控制	100
基础无功控制策略	81.47
协调无功控制策略	26.71