Method for improving power of mining area power supply network by aiming at harmonic source of mining area power supply network

The invention provides a method for improving power of a mining area power supply network for a harmonic source of the mining area power supply network, and the method comprises the following steps: 1, selecting a cable: selecting a cable with a large section in a power supply system of a coal mine; 2, selecting a transformer, widely applying a triangular or star-shaped transformer in a coal mine power supply system, determining the capacity of the power transformer according to a load, and considering harmonic distortion; and step 3, serially connecting the electric reactor with the capacitor, serially connecting an electric reactor loop with the parallel compensation capacitor to form an inductive load, and using a reactive compensation capacitor in a coal mine power supply system as a harmonic filter to prevent harmonic waves. According to the invention, higher harmonics generated in the coal mine power supply process are effectively suppressed, the harm caused by the harmonic problem to the coal mine prod