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江苏科技信息 ›› 2015, Vol. 32 ›› Issue (7): 15-17.doi: 10.3969/j.issn.1004-7530.2015.07.019

• 论文 • 上一篇    下一篇

无功补偿和谐波处理的研究

李军   

  1. 上海中国弹簧制造有限公司设备部,上海,201901
  • 出版日期:2015-03-05 发布日期:2015-03-05

The Research of Reactive Power Compensation and the Harmonic Prevention

Li Jun   

  • Online:2015-03-05 Published:2015-03-05

摘要： 锻造用中频感应加热在运行过程中暴露出问题是供电变压器过热（温升偏高），功率因数低，投入的补偿电容器温升偏高、鼓肚、爆炸屡见不断鲜，中频电源与中频电源之间相互干扰，工作不正常，导致锻件质量的不稳定。为此对中频炉的供电--中频电源监测，测量结果表明中频电源是一个污染电网的谐波源，含有大量的高次谐波。在变压器的低压侧，中频电源的进线侧采用无源滤波装置，提高功率因数，同时补偿谐波电流，进行谐波治理，效果令人满意。文章对上述工作进行了总结和技术分析。

关键词: 中频感应加热, 谐波治理, 无功补偿

Abstract: In the process of intermediate-frequency inductiion heating emerge the following problems: the electric power transformer is overheated ( the temperature is too high); power factor is low; the compensation condenser has higher temperature, the phenomenon of bulging and explosion; interference between intermediate-frequency electric source occurs and it works abnormally. All these problems cause to the instability of product quality. So it results from the testing of intermediate-frequency electric source that electric source is harmonic wavesource, which has large amount of high-power harmonic wave and pollutes power grid. At the low-voltage side of the transformer, wave filter without electric source is set at the coil-in side, so that it increases power factor, compensates harmonic wave electric current and processes harmonic wave. The effect is satisfying. This article isthe summary of the above work and the technical analysises.