CAJ | 학술논문

基于新疆西北联网第二通道工程中的鱼卡母线可控高抗系统调试，对750 kV磁控式可控高抗的谐波特性进行仿真与实测分析。建立可控高抗详细电磁暂态模型，对稳态运行及空载投切操作产生的谐波进行仿真计算，并与现场实测波形进行对比分析。可控高抗稳态运行时网侧电流主要含有3次、5次、7次等奇数次谐波；预励磁方式下投空载可控高抗的励磁涌流比无预励磁时幅值高，产生的谐波以2次分量为主，谐波的衰减趋势与可控高抗工作点的移动有关。研究结果明确了磁控式可控高抗的谐波特性，为进一步分析其与电网的相互影响提供参考。
기우신강서북련망제이통도공정중적어잡모선가공고항계통조시，대750 kV자공식가공고항적해파특성진행방진여실측분석。건립가공고항상세전자잠태모형，대은태운행급공재투절조작산생적해파진행방진계산，병여현장실측파형진행대비분석。가공고항은태운행시망측전류주요함유3차、5차、7차등기수차해파；예려자방식하투공재가공고항적려자용류비무예려자시폭치고，산생적해파이2차분량위주，해파적쇠감추세여가공고항공작점적이동유관。연구결과명학료자공식가공고항적해파특성，위진일보분석기여전망적상호영향제공삼고。
Based on the system commissioning of controllable high voltage shunt reactor connected to the bus of Yuqia substation, which belongs to the second power transmission channel project interconnecting Xinjiang power grid with Northwest power grid, the simulation and actual measurement based analysis on harmonic characteristic of 750 kV magnetically controlled shunt reactor (MCSR) is performed. A detailed electromagnetic transient model of MCSR is established to simulate and calculate the harmonics caused by steady state operation and energizing no-load transmission line, and the results of simulation and calculation are compared with on-site measured waveforms and comparison results are analyzed. During the steady state operation of MCSR the current at grid side mainly contains odd harmonics such as the 3-th, the 5-th and the 7-th harmonics and so on;the amplitude of inrush current due to energizing no-load MCSR under pre-excitation is higher than that without pre-excitation, and the produced harmonic is mainly the second harmonic component, and the attenuation trend of harmonics relates to the shift of the working point of MCSR. The results of this research clarify the harmonic characteristic of MCSR and are available for reference to the analysis on the interaction effect between MCSR and power grid.