With the modernization of agriculture and rural industrialization and rapid Karma accounting, supply capacity in the distribution network in the process of gradual growth, the formation of harmonic pollution is increasingly serious. Consequences of harmonic pollution produced: cause transformers, transformers burned, cables and capacitors burst; continue to protect and switch malfunction; television, communications, medical electrical equipment, industrial and mining production line, the transportation industry and other electrical equipment finance and computer systems, would cause serious disruption or destruction. Therefore, improvement, improve power quality imminent. We have gone through years of research and testing, the introduction of broadband FM filtering equipment, and 220KV, 110KV, 35KV, 10KV substation, such as testing, modeling, simulation, design, corrective treatment, reaching the desired effect, the cleanliness of the control grid within the scope of national standards. Improve the quality of power supply; reduce the occurrence of various accidents; safeguard the stability and reliability of the power grid operation.