Design and Control Solution to High-Frequency De-Icing Large Power Excitation Source for Transmission Lines
Zhou DAI , Xiaohong MA , Yusheng ZHOU , Xianjun WANG , Qiang XIONG , Ci TANG , Tingfang YANG
›› 2018, Vol. 12 ›› Issue (5) : 30 -36.
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Design and Control Solution to High-Frequency De-Icing Large Power Excitation Source for Transmission Lines
- Zhou DAI 1, 2, 3
- , Xiaohong MA 1, 4
- , Yusheng ZHOU 4
- , Xianjun WANG 4
- , Qiang XIONG 4
- , Ci TANG 4
- , Tingfang YANG 4
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Abstract
In this paper, a model of high-frequency excitation de-icing large power source for transmission lines is designed. The multiple PWM controlled rectifier and the carrier phase shift control technology for power unit input are adapted at the input side to realize the control of the input harmonic and power factor. Phase shift SPWM technology is used to overcome the difficulty of output high frequency voltage with low switching frequency devices. The control strategy of the input voltage and output current equalization sharing is carried out. Each unit communicates through equal voltage bus and equal current bus, thus the circulation current problem caused by power unit parallel output is solved. The results of simulation experiment of de-icing large power source show that the output frequency of the de-icing source is up to 40 kHz, and this solution has characteristics of steady output voltage with low harmonic, easy to control, which provides a technical reference for de-icing equipment development of transmission lines.
Keywords
high frequency de-icing power source / output current equalization sharing / input voltage equalization sharing / carrier phase shift techniology / power unit
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Funding
Key Laboratory of Ice Disaster Prevention of Guizhou Power Grid Co., Ltd.(GZ2015-2-0055)
National Natural Science Foundation of China(51307009)
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