气体放电灯的供电研究-《郑州大学学报(工学版)》

文章信息/Info

Author(s):: Wang Liancai; Li Xiaoning; Qin Kejing; Zeng Qingshan; Wang Chunju; Zhengzhou University of Technology, self -planned, Xinxiang Steel Factory

摘要:: 本文分析了大量采用气体放电灯照明时，三相对称电路和多种典型的不对称电路。拍摄了这些电路的中线电流波形。分析这些波形可知：（１）即使三相负载完全对称，中线电流仍是满载相电流的３２．７％。（２）典型的不对称情况下，中线电流大于满载相电流。（３）若出现电路结构变化，中线电流可能大于相电流的两倍。（４）大量采用气体放电灯的三相供电电路的中线电流不仅比相同情况的线性负载的中线电流大，而且高次谐波丰富，是一个新的谐波源。这些分析及实验数据对照明供电设计及电缆制造厂家都有价值。

Abstract:: This article analyzes a large number of asymmetric circuits and a variety of typical asymmetric circuits when using a large amount of gas discharge lights. The mid -line current waveform of these circuits was shot. Analysis of these waveforms can be seen: (1) Even though the three -phase load is completely symmetrical, the mid -line current is still 32.7 % of the full load phase current. (2) In the case of typical asymmetric conditions, the mid -line current is greater than the full load phase. (3) If the circuit structure changes, the mid -line current may be greater than twice the phase current. (4) The mid -line current of a three -phase power supply circuit with a large number of gas discharge lamps is not only greater than the mid -line current of the linear load of the same situation, but also rich in high -level harmonics. It is a new harmonic source. These analysis and experimental data control design and cable manufacturers are valuable.