Harmonics Test, Analysis And Treatment For Power Consumers

In recent years, with the rapid development of agriculture, the kind of electric load is increasing day by day. A large quantity of Nonlinear electric equipment occurs in the power grid and causes various higherolder harmonic waves. For example, Battery enterprises will produce 5..7.11 harmonic waves, and arc furnace enterprises will produce 2.3.4.5 harmonic waves. Meanwhile NingHang passenger line is under construction. If it is finished, it will be the highest voltage and it will influence Huzhou Power Grid mostly.The usage of these equipment strikes the active current and reacitive power of power grid, causing the rise and fall of voltage and frequency. These Nonlinear load transfuses much harmonic waves into the power grid, which seriously worsens the quality of electric energy and causes great damage to the electrical equipment. So we should pay much attention to the source and start at the source. We should analyse the device principle and electrical specifications objectively and take effective measures to treat the harmonic waves.During the study of this essay, through the cooperation and communication with harmonic treatment factories have a test on the situation of electricity supply and harmonic distribution of main battery enterprises and arc furnace enterprises in Huzhou ElectricPower Bureau. According to the result of this test and the situation of being polluted, we mainly analyse the origin of harmonic waves happening and harmonic characteristic. Aiming at different types of harmonic source equipment, analyse the harmonic management method and selectively choose some typical consumers to treat the harmonic and test the effect of treatment. The paper also deeply analyses the possible influence on the Huzhou power grid by the NingHang passenger line and have a discussion about the treatment in details.Huzhou power grid afford the county People's Daily life agriculture and power supply task. The quality of electrical energy relates to national economy and people's lives. According to this study, test and analyse the three harmonic resources in Huzhou power grid and successfully treat the typical consumer. This research preliminary forms the three treatments to harmonic equipment and play a great role in treating the harmonic next period and offer guidance on new users power supply project examination and approval.