电力工程技术2025，Vol.44Issue(4)：33-41,9.DOI:10.12158/j.2096-3203.2025.04.004
储能型柔性互联设备的构网运行与故障过流抑制策略
Grid forming operation and fault overcurrent suppression strategy of energy storage-based flexible interconnection device
摘要
Abstract
With the continuous development and application of new energy power generation technologies,distribution networks are gradually becoming a hub platform with functions of transmission,distribution,storage,and trading.The operating pressure on distribution networks is increasing.Flexible interconnected devices(FIDs)provide a solution for interconnection of distribution networks,enhancing the power flow regulation capability and fault isolation capability of distribution networks.However,the integration of new energy power generation represented by photovoltaics,along with the retirement of traditional large-inertia synchronous generators,has led to increasingly prominent issues such as reduced overall grid inertia and poor frequency stability.The existing FIDs do not meet the demand for grid inertia support.To address the above issues,this paper proposes a solution based on energy storage-based FIDs combined with grid-forming control represented by virtual synchronous generators(VSG).On the basis of meeting the flexible regulation requirements of distribution networks,this solution realizes inertia support for the AC grid and reveals the intrinsic relationship between virtual synchronous generator control and droop control.Considering that the VSG strategy is prone to overcurrent during fault conditions,a feedforward suppression strategy based on virtual voltage construction is proposed.This strategy can achieve overcurrent suppression in FIDs under fault conditions through power feedforward and voltage feedforward.Finally,the effectiveness of the proposed strategy in power allocation control and low-voltage ride-through is verified through MATLAB/Simulink simulation.关键词
储能型柔性互联设备(FID)/低压配电网/虚拟同步机(VSG)/电网故障/过电流抑制/虚拟电压Key words
energy storage-based flexible interconnected device(FID)/low-voltage distribution network/virtual synchronous generator(VSG)/grid fault/overcurrent suppression/virtual voltage分类
信息技术与安全科学引用本文复制引用
朱恩泽,张国驹,葛雪峰,王鑫达,裴玮..储能型柔性互联设备的构网运行与故障过流抑制策略[J].电力工程技术,2025,44(4):33-41,9.基金项目
国家重点研发计划资助项目"配电网高功率密度柔性互联技术和装备"(2023YFB2407400) （2023YFB2407400）
