Research on hybrid power filter of 6 kV power grid in coal mine

• 来源期刊: 煤炭学报（英文版）
• 年，卷（期）: 2010,（4）
• 页码范围: 434-440
• 页数: 7页
• 语种: 英文
• DOI: 10.1007/s12404-010-0419-6

摘要

Studied the harmonic control of the 6 kV power grid in a coal mine substation.Taking harmonic suppression and reactive power compensation into account, and complying with the economic and efficient technical line of the smart grid, a new hybrid active filter was proposed and applied to the power grid in the coal mine with the advantages such as large capacity, low cost and low loss. In order to improve detection speed and reduce the succeeding errors to improve the filtering performance of the active power filter,the DFT (Discrete Fourier Transform) sliding window algorithm based on coordinate transformation and improved hysteresis control method was proposed. The Matlab simulation results show that the hybrid active filter is satisfactory, can improve the grid power factor and can meet the requirements of improving the power quality in the coal mine.