Study on the effect of different pre-excitation factors on the output characteristics of MCSR

Energy Reports

卷:8

Yunshuo Zhang¹  Wendi Yu²  Zhuwen Dai³  Junqiang Xing³  Gong Chen³ 

[1] Corresponding author.;

[2] Changjiang Institute of Survey, Planning, Design and Research Co. Ltd, Wuhan City, Hubei Province, China;

[3] Shenyang Institute of Engineering, No. 18 Puchang Road, Shenbei New District, Shenyang City, Liaoning Province, China;

关键词: Magnetically controlled shunt reactor;    Energization;    Pre-excitation;    Overvoltage;    Magnetizing inrush;    Second harmonic;   

DOI  :  

来源: DOAJ

【 摘 要 】

This paper takes the BKFSZT-30000/400 three-phase eight-limb magnetically controlled shunt reactor as the research object. Firstly, an electromagnetic transient simulation model is established based on the parity principle to verify the operating characteristics of the MCSR during direct energization and pre-excitation energization. On this basis, the influence of the pre-excitation capacity and the target capacity on the output characteristics of the MCSR is investigated. The results show that during the pre-excitation process the currents of working and control winding produce a DC component and a harmonic component dominated by the second harmonic, with the size of both DC components mainly influenced by the pre-excitation capacity and the attenuation determined by MCSR; the variation of the working harmonics is mainly influenced by the target capacity, while the size and attenuation of the control harmonics are determined by the pre-excitation capacity and the target capacity respectively. The results of the study clarify the output characteristics of the MCSR when energization with pre-excitation and provide a reference for further analysis of the interaction with the grid. Finally, to solve the problem of no reliable external power supply for pre-excitation, a fast excitation energization method with short-connected of the compensation winding is provided and verified by simulation.

【 授权许可】

Unknown