Large-Scale Energy Storage Assisted Transient Voltage Stability Control Model and Application of Power Grid

doi:10.16628/j.cnki.2095-8188.2023.09.002

Abstract

Abstract:

In order to effectively solve the problem that the UHV DC bipolar lock and the randomness of new energy output may lead to a decrease of the transient stability level of the main network and the reliability of the distribution network power supply.Firstly,based on the power system analysis software package (PSASP),a user defined module is used to model the energy storage system to improve the transient voltage stability control of power grid.Secondly,a joint voltage regulation control strategy for energy storage power station and capacitor/reactor is proposed to effectively improve the voltage regulation capability of the system.Finally,the results show that compared with the condenser the voltage recovery speed of energy storage with equal capacity connected at the same location is faster.The power grid transient voltage regulation level is effectively improved.

Key words: energy storage modeling, transient voltage, power system analysis software package (PSASP), combined pressure regulation strategy, condenser

CLC Number:

TM910.1

ZHU Chen, ZHENG Junfeng, FANG Xing, FU Xiang, CHEN Baiyuan, GAO Kefu, HU Xiangwei, HUANG Jiyuan. Large-Scale Energy Storage Assisted Transient Voltage Stability Control Model and Application of Power Grid[J]. LOW VOLTAGE APPARATUS, 2023, 0(9): 11-17.

Figures/Tables 21

References 18

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工况	ΔU(t)	dP(t)/dt	离散无功源状态	调压方案
工况	ΔU(t)	dP(t)/dt	离散无功源状态	电容器/电抗器	储能
1	0	—	—	不动作	不动作
2	>0	>0	—	不动作	动作
3	>0	<0	0	不动作	动作
4	>0	<0	1	退电容/投电抗	不动作
5	<0	>0	0	不动作	动作
6	<0	>0	1	退电抗/投电容	不动作
7	<0	<0	—	不动作	动作