| With economic development and living standards being constant to raise, people demand more and more electric power, meanwhile require the higher power supply and reliability . The harmfulness of harmonic caused the people's attention.They have been resulting in deterioration of power quality. In the modern building, the appearence of harmonic currents and harmonic voltage make the power supply quality descendent; On the other hand, the wide-ranging application of nonlinear load produce a great deal of harmonic, it cause the pollution of electrical power system.In this thesis, a problem of the harmonic in the power supply is introduced comprehensively, firstly analyze the existence and harmfulness of the harmonic ;Secondly analyze the harmonic source and existing improvement meanses; Next analyze the necessity and the economic benefit of the harmonic from the test report of the practical engineering example ; Finally put forward the view on the developing trend of harmonic management. |
PDF Full Text Request