电力系统自动化2026，Vol.50Issue(11)：73-84,12.DOI:10.7500/AEPS20250529007
含子模块储能型MMC-STATCOM的直流受端系统稳定性提升
Stability Improvement of DC Receiving-end System Using MMC-STATCOM with Energy-storage Submodules
摘要
Abstract
To address the issues related to voltage stability deterioration and inadequate inertia support resulting from high penetration of renewable energy into the power grid,this paper proposes a control strategy for the static synchronous compensator(STATCOM)using the topology of the modular multilevel converter(MMC)with energy-storage submodules.This strategy has the active support capability.First,a fault detection mechanism based on DC voltage and system frequency is proposed to facilitate adaptive switching between steady-state and transient operation modes.Then,during fault period,the MMC-STATCOM with energy-storage submodules is regulated to release energy from the energy storage unit to compensate for a power shortage within the system.In response to load disturbances,a frequency droop coefficient is used to regulate the charging and discharging power of the energy storage unit,thereby mitigating frequency fluctuations.Finally,the proposed coordinated control strategy is verified through PSCAD/EMTDC and RTDS simulations.The simulation results show that the MMC-STATCOM with energy-storage submodules can promptly respond to frequency variations during various transient processes,while simultaneously providing reactive power support,smoothing power fluctuation within the system,and significantly enhancing the comprehensive stability of the high-voltage DC transmission receiving-end system.关键词
直流受端系统/暂态稳定性/静止同步补偿器/子模块/储能/模块化多电平换流器/电压支撑/频率支撑Key words
DC receiving-end system/transient stability/static synchronous compensator(STATCOM)/submodule/energy storage/modular multilevel converter(MMC)/voltage support/frequency support引用本文复制引用
丁超蕃,王曦,李保宏,江琴,石鹏,刘天琪..含子模块储能型MMC-STATCOM的直流受端系统稳定性提升[J].电力系统自动化,2026,50(11):73-84,12.基金项目
四川省自然科学基金资助项目(2025ZNSFSC0450) （2025ZNSFSC0450）
国家电网有限公司科技项目(52199725000B). This work is supported by Sichuan Provincial Natural Science Foundation of China(No.2025ZNSFSC0450)and State Grid Corporation of China(No.52199725000B). （52199725000B）
