Suppression and reactive power compensation in power system

Li, Jialin; Ding, Honggang; Sun, Ye Ming; Guo, Jing-Ming; Wang, Jiapeng; Dong, Chaonan

doi:10.1109/auteee52864.2021.9668839

Cited by 1 publication

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“…The TSC enables graded reactive power compensation [13], while the APF compensates for harmonics and provides stepless continuous compensation of reactive power between TSC stages [14]. This system achieves simultaneous reactive power compensation and harmonic current suppression, resulting in excellent compensation effects and better economy [15,16]. As a result, this hybrid system has been widely adopted.…”

Section: Introductionmentioning

confidence: 99%

Research on an Adaptive Compound Control Strategy of a Hybrid Compensation System

2023

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This paper investigates the parallel harmonic resonance problem for hybrid compensation systems, consisting of active power filters and thyristor-switched capacitors, and proposes an adaptive composite control strategy for solving the parallel harmonic resonance problem that may arise in practical applications of hybrid compensation systems. In practice, a hybrid compensation system can effectively solve harmonic and reactive power problems, but the equivalent reactance of the thyristor-switched capacitor and the supply line may form a parallel resonant circuit, which may generate parallel harmonic resonance when excited by a harmonic source at the non-linear load side, affecting the quality and stable operation of the system. The adaptive composite control strategy employs a second-order generalized integrator-frequency-locked loop (SOGI-FLL) to extract the harmonic voltage at the point of common coupling (PCC) and generate an adaptive damping current command using an adaptive algorithm, which adaptively adjusts the parameters of the resonance suppression controller through harmonic content limitation. Matlab/Simulink simulations show that the method effectively achieves harmonic resonance suppression of the power supply system under complex operating conditions, thus ensuring the stable operation and power quality of the power supply system. Therefore, the proposed control strategy is feasible and effective.

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