750kV磁控式可控高抗谐波特性仿真与实测分析  

Simulation and Actual Measurement Based Analysis on Harmonic Characteristic of 750 kV Magnetically Controlled Shunt Reactor

作　　者：周佩朋[1] 项祖涛[1] 郑彬[1] 班连庚[1] 王东阳[1] 杨大业[1] 王茂清[1] 韩亚楠[1] 

机构地区：[1]中国电力科学研究院,北京市海淀区100192

出　　处：《电网技术》2014年第4期1059-1063,共5页Power System Technology

摘　　要：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。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.

关 键 词：系统调试 磁控式可控高抗 谐波 预励磁 励磁涌流 

分 类 号：TM55[电气工程—电器]