无源调谐半波长交流输电线路的工频过电压分析
|
摘要
内部过电压是半波长交流输电技术的关键问题之一,当前研究对象大多针对自然半波长线路而非调谐半波长线路。因此在分析自然半波长输电线路相关理论模型的基础上,研究非半波长线路的无源调谐技术,并对无源调谐半波长线路的过电压特性进行仿真分析。仿真结果不仅证明了3种调谐网络均可使非半波长线路实现半波特性,并且还表明了:空载工况下的π型和T型调谐线路的过电压水平均比自然半波线路和电容型调谐线路高;电容型调谐线路的甩负荷过电压水平相对较低;较之π型和T型调谐线路,电容型调谐线路工频过电压水平均更低且典型电压波形更贴近自然半波长线路的波形特性。
Internal over-voltage is one of the key issues in half-wave AC transmission technology. Most of the current research objects aim at natural half-wavelength lines rather than tuning half-wavelength lines. Therefore, based on the analysis of the theoretical model of natural half-wavelength transmission lines, the passive tuning technique of non-half-wavelength lines is studied, and the over-voltage characteristics of passively tuned half-wavelength lines are simulated. The simulation results not only prove that all three tuning networks can realize the half-wave characteristics of non-half-wavelength lines, but also show that the over-voltage levels of π-type and T-type tuning lines under no-load conditions are higher than those of natural half-wave line and capacitance-type tuning line. Capacitance-type tuning line has relatively low levels of load rejection over-voltage. Compared with the π-type and T-type tuning lines, the capacitance-type tuning line has a lower power frequency over-voltage and the typical voltage waveform is closer to the waveform characteristics of the natural half-wavelength line.
Internal over-voltage is one of the key issues in half-wave AC transmission technology. Most of the current research objects aim at natural half-wavelength lines rather than tuning half-wavelength lines. Therefore, based on the analysis of the theoretical model of natural half-wavelength transmission lines, the passive tuning technique of non-half-wavelength lines is studied, and the over-voltage characteristics of passively tuned half-wavelength lines are simulated. The simulation results not only prove that all three tuning networks can realize the half-wave characteristics of non-half-wavelength lines, but also show that the over-voltage levels of π-type and T-type tuning lines under no-load conditions are higher than those of natural half-wave line and capacitance-type tuning line. Capacitance-type tuning line has relatively low levels of load rejection over-voltage. Compared with the π-type and T-type tuning lines, the capacitance-type tuning line has a lower power frequency over-voltage and the typical voltage waveform is closer to the waveform characteristics of the natural half-wavelength line.
引文
[1]王冠, 吕鑫昌, 孙秋芹, 等. 半波长交流输电技术的研究现状与展望[J]. 电力系统自动化, 2010, 34(16):13-18.
[2]梁旭明. 半波长交流输电技术研究及应用展望[J]. 智能电网, 2015, 3(12):1091-1096.
[3]汪炜将,陈程,杨金成,等.半波长交流输电技术前沿追踪与述评[J].电气开关,2017,55(1):12-15.
[4]王华昕, 薛天水. 超远距离输电方式的经济性比较[J]. 上海电力学院学报, 2015, 31(2):187-190.
[5]张彦涛, 张志强, 张玉红, 等. 应用特高压直流输电技术实现亚欧洲际输电方案的设想[J]. 电网技术, 2015, 39(8):2069-2075.
[6]FENG T, DONG X, WANG B, et al. Analysis of fault characteristics of half-wavelength AC transmission lines[C]// 2016 IEEE Power and Energy Society General Meeting (PESGM). IEEE, 2016.
[7]梁旭明, 张彦涛, 秦晓辉, 等. 基于特高压交流半波长技术的立体电网构建研究[J]. 电网技术, 2016, 40(11):3415-3419.
[8]程述一, 郄鑫, 李晋, 等. 紧凑型输电技术应用于交流半波长输电初探[J]. 供用电, 2016, 33(10):51-55.
[9]董鹏,朱艺颖,习工伟,等.半波长输电系统运行特性的全电磁暂态仿真研究[J].高电压技术,2018,44(1):29-36.
[10]YANG W, XU W, YUN W L, et al. High-frequency, half-wavelength power transmission scheme[J]. IEEE Transactions on Power Delivery, 2016, 32(1):1-1.
[11]SANTOS M L D, SANTO S G D. Evaluation of voltage and current profiles and Joule losses for a half-wavelength power transmission line[J]. International Journal of Electrical Power & Energy Systems, 2015, 70:39-44.
[12]邱璐. 半波长输电线路稳态与暂态过电压特性及抑制技术研究[D]. 长沙:湖南大学,2017.
[13]韩彬,王平,张媛媛,等.特高压半波长交流输电系统过电压特性及对策[J].高电压技术,2018,44(1):14-21.
[14]邱关源,罗先觉. 电路.第5版[M].北京:高等教育出版社,2006.
[15]徐会博. 含调谐网络的半波长输电系统特性分析 [D].哈尔滨:哈尔滨工业大学,2017.
[2]梁旭明. 半波长交流输电技术研究及应用展望[J]. 智能电网, 2015, 3(12):1091-1096.
[3]汪炜将,陈程,杨金成,等.半波长交流输电技术前沿追踪与述评[J].电气开关,2017,55(1):12-15.
[4]王华昕, 薛天水. 超远距离输电方式的经济性比较[J]. 上海电力学院学报, 2015, 31(2):187-190.
[5]张彦涛, 张志强, 张玉红, 等. 应用特高压直流输电技术实现亚欧洲际输电方案的设想[J]. 电网技术, 2015, 39(8):2069-2075.
[6]FENG T, DONG X, WANG B, et al. Analysis of fault characteristics of half-wavelength AC transmission lines[C]// 2016 IEEE Power and Energy Society General Meeting (PESGM). IEEE, 2016.
[7]梁旭明, 张彦涛, 秦晓辉, 等. 基于特高压交流半波长技术的立体电网构建研究[J]. 电网技术, 2016, 40(11):3415-3419.
[8]程述一, 郄鑫, 李晋, 等. 紧凑型输电技术应用于交流半波长输电初探[J]. 供用电, 2016, 33(10):51-55.
[9]董鹏,朱艺颖,习工伟,等.半波长输电系统运行特性的全电磁暂态仿真研究[J].高电压技术,2018,44(1):29-36.
[10]YANG W, XU W, YUN W L, et al. High-frequency, half-wavelength power transmission scheme[J]. IEEE Transactions on Power Delivery, 2016, 32(1):1-1.
[11]SANTOS M L D, SANTO S G D. Evaluation of voltage and current profiles and Joule losses for a half-wavelength power transmission line[J]. International Journal of Electrical Power & Energy Systems, 2015, 70:39-44.
[12]邱璐. 半波长输电线路稳态与暂态过电压特性及抑制技术研究[D]. 长沙:湖南大学,2017.
[13]韩彬,王平,张媛媛,等.特高压半波长交流输电系统过电压特性及对策[J].高电压技术,2018,44(1):14-21.
[14]邱关源,罗先觉. 电路.第5版[M].北京:高等教育出版社,2006.
[15]徐会博. 含调谐网络的半波长输电系统特性分析 [D].哈尔滨:哈尔滨工业大学,2017.