特高压直流干式平波电抗器多谐波特征参量测试技术及应用  

Testing Technology of Multi-harmonic Characteristic Parameters and Its Application for UHVDC Dry-type Smoothing Reactors

作　　者：汤浩[1,2] 贾鹏飞[2] 李金忠[2] 张书琦[2] 吴广宁[1] 孟波 

机构地区：[1]西南交通大学电气工程学院,成都412000 [2]中国电力科学研究院,北京100192 [3]中国能建集团装备有限公司北京技术中心,北京100044

出　　处：《高电压技术》2017年第3期859-865,共7页High Voltage Engineering

基　　金：国家电网公司科技项目(XTB17201300087)~~

摘　　要：特高压直流(UHVDC)干式平波电抗器的谐波特征参量直接影响着它的安全稳定运行。为准确测量平波电抗器各次谐波特征参量,从而评估它的性能,通过理论及仿真分析,验证了小电流下的等效测量原理并获得了平波电抗器在双12脉动换流工况下的谐波电流频谱;提出了多谐波特征参量测量系统,并开展了±800 k V特高压平波电抗器特征参量的实测研究。结果表明:电压和电流准确度为0.03%、功率因数角准确度为0.05%时,在95%置信水平下谐波电抗测量不确定度为0.11%,提出的系统能够准备测量平波电抗器特征参量。研究结果可为特高压直流平波电抗器产品设计、性能考核和评估提供方法和指导依据。The various harmonic characteristic parameters have direct relation with the safety and stability of ultra-high voltage direct current （UHVDC） dry-type smoothing reactors. In order to determine the various harmonic characteristic parameters and estimate the performance of its operating conditions accurately, we put forward theoretical analysis and simulation results.The equivalent measuring principle in low current is verified and the current harmonic spectrum of UHVDC dry-type smoothing reactors under the double 12 pulse converter operating conditions are obtained. Then the measurement system and calculation process of the harmonic characteristic parameters are provided in this paper, and the characteristic parameters of a 4-800 kV dry-type smoothing reactor are measured. The results show that, when power fac- tor accuracy is 0.05%,and both voltage and current accuracy are 0.03%, the uncertainty of harmonic reactance test result is 0.11% calculated at 95% confidence level. The measurement system proposed in this paper can be used to measure characteric parameters of dry-type smoothing reactor accurately. All ressearch results are benificial for the product design, performance test, and evaluation on UHVDC dry-type smoothing reactor.

关 键 词：特高压直流输电 伏安特性 干式平波电抗器 多谐波特征参量 不确定度分析 电流频谱 

分 类 号：TM47[电气工程—电器]