基于自抗扰控制的储能型交流励磁调相机暂态应力抑制策略

Transient Stress Suppression Strategy for Energy-Storage AC-Excited Condensers Based on Active Disturbance Rejection Control

摘要

储能型交流励磁调相机具备同时支撑电压和频率的能力，在保障新型电力系统稳定性方面具备显著优势．然而，在暂态支撑过程中，储能型交流励磁调相机多重应力越限问题突出，严重影响其安全性与使用寿命．为解决这一问题，提出了一种基于线性自抗扰控制的暂态应力抑制策略．首先，分析了储能型交流励磁调相机在电网电压故障下的暂态应力特性，提出了储能型交流励磁调相机自抗扰控制方法；然后，通过伯德图对比分析了自抗扰控制在抑制扰动方面的优势，并采用粒子群优化算法对自抗扰控制器参数进行优化；最后，对所提控制策略进行了仿真验证．实验结果表明，所提策略能够显著抑制调相机在暂态过程中的多重应力，提升其快速响应与稳定支撑能力，为新型电力系统的安全稳定运行提供有力支撑．

Abstract

Energy-storage AC-excited condenser(ESAEC)can simultaneously provide voltage and frequency support，offering significant advantages for enhancing the stability of modern power systems. However，during transient support processes，these devices are prone to severe multitransient stresses，which seriously threaten their operational safety and service life. To address these issues，a transient stress suppression strategy based on linear active disturbance rejection control(LADRC)was proposed. First，the transient stress characteristics of ESAEC under grid-voltage fault conditions were analyzed，and an LADRC-based control framework for ESAECs was proposed. The superior disturbance suppression capability of LADRC was demonstrated through Bode diagram comparisons，and the active disturbance rejection controller parameters were optimized using the particle swarm optimization(PSO)algorithm. Finally，the effectiveness of the proposed control strategy was validated through simulation experiments. The results showed that the strategy effectively suppresses multitransient stress overshoot during fault conditions，significantly enhances the fast response and stable support capabilities of the ESAEC，and provides strong technical support for the safe and stable operation of new-generation power systems.

关键词

储能型交流励磁调相机 / 电网故障 / 应力抑制 / 线性自抗扰控制

Key words

energy-storage AC-excited condenser(ESAEC) / grid fault / stress suppression / linear active disturbance rejection control(LADRC)

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基金资助

国家重点研发计划资助项目(2023YFB2406800)