Design of Power Quality Control Device for Underground Power Supply System in Coal Mine
Aiming at the problems of large reactive power consumption and serious harm onic pollution in the power supply system of Bayangol Coal Mine,a power quality control device for the power supply system of coal mine is designed.The hardware design and control strategy of the device are described in detail,and the simulation and test are completed.The results show that the current distortion is serious,the power factor is low and the reactive power is high before the device is put into operation.After the device was put into operation,due to compensating for reactive power and controlling harmonic pollution,the grid side current distortion rate was significantly reduced,and the power factor was greater than 0.95,effectively improving the power quality of the coal mine power supply system.
coal minepower supply systempower qualityreactive power compensationharmonic control
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