Research on anti-interference ability and propagation characteristics of converter transformer based on monomer balance method
During the on-site commissioning or diagnostic tests of rectifier transformers,the detection of partial dis-charges is a crucial examination for assessing the integrity of the internal insulation structure.However,this detec-tion is susceptible to periodic narrowband interference.This study establishes a simulation model with distributed parameters for the valve-side winding of the rectifier transformer,concurrently introducing a novel method for detec-ting partial discharges based on the monomer balance method.The simulation results of periodic narrowband inter-ference,partial discharge and its mixture signal show that it can detect the partial discharge signal accurately and suppress the noise interference effectively.In accordance with this methodology,this paper conducted simulation calculations of the propagation of partial discharge signals.By changing the position of the applied partial discharge pulse signal on the winding,the paper analyzed the impact of positions on the characteristics of the output wave-form.The computational results indicate that the monomer balance method proposed in this paper exhibits robust re-sistance to interference and accurate detection of partial discharge pulse signals,providing a more comprehensive theoretical basis for engineering applications.
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