DC VOLTAGE INTERFERENCE SUPPRESSION STRATEGY FOR E-FMSS UNDER FEEDER FAULT

Luan Weicong; Zhang Chun; Ouyang Changle; Wu Wentai

doi:10.19912/j.0254-0096.tynxb.2024-0958

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (10) : 36-44. DOI: 10.19912/j.0254-0096.tynxb.2024-0958

DC VOLTAGE INTERFERENCE SUPPRESSION STRATEGY FOR E-FMSS UNDER FEEDER FAULT

Luan Weicong^1,2, Zhang Chun^1,2, Ouyang Changle^1,2, Wu Wentai^1,2

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Abstract

In order to improve the steady-state performance of the bus voltage of the energy-storage flexible multi-state switch（E-FMSS）DC side and suppress the DC voltage fluctuation when the connected feeder fails, this paper proposes a PID controller with improved fuzzy linear self-disturbance resistance controller（LADRC） instead of the outer ring of DC voltage. The improved fuzzy LADRC, based on the derivation model, adds an additional proportional link in parallel in the integral link of the disturbance estimation of the linear extended state observer （LESO） to enhance the accuracy of the disturbance estimation, and considers the LESO for system total disturbance estimation error compensation. The online optimization of fuzzy LADRC parameters is achieved by combining the active anti-disturbance parameter tuning method of the improved beetle antennae search. Simulation results show that when the feeder connected by E-FMSS fails, the strategy proposed in this paper can significantly suppress the DC voltage fluctuation of E-FMSS, the active power of each port is smooth transition, the system can quickly recover stability, and has good disturbance resistance.

Key words

fuzzy control / voltage regulation / disturbance rejection / flexible multi-state switches with energy storage / fuzzy linear drag rejection controller

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Luan Weicong, Zhang Chun, Ouyang Changle, Wu Wentai. DC VOLTAGE INTERFERENCE SUPPRESSION STRATEGY FOR E-FMSS UNDER FEEDER FAULT[J]. Acta Energiae Solaris Sinica. 2025, 46(10): 36-44 https://doi.org/10.19912/j.0254-0096.tynxb.2024-0958

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