Research On Harmonic Manage Of The Steel Factory

With the far-ranging application of power electeronics commutating technology and high power thyristor device in all kinds of electric equipments ,the problem of harmonics becomes more and more serious. The harmonics contaminations affects the safe operation of power system and the normal supply of power in the industry and agriculture. As a result, to test and manage the harmonic is very necessary. The damage of power network become more and more because of serious harmonic pollution. And when electric current of harmonic flow in the power network, which maninly produces two kinds of influence:The affixture exhaust and harmonic voltage decline.The harmonic can make the capacitor restiance decline,the electric current enlarge,and lower the service life of the capacitor or make capacitor injure. So to limit harmonic is very important, to restrain harmonic obey the basic principle of underneath: To limit harmonic current infuse into power network,to control the harmonic voltage of power system within the scope of allowed, to guarantee the qualified electric power supply to power network. The serious harmonic pollution is in this state because of main pollution source,which is very wide, mobility and big characteristics. Manage measure should adopt in lode, To install filter in harmonic source is restrain harmonic current invold harmonic network,which is very important. The basic principle of installing filter is asorbing harmonic current closing the harmonic resource. According to the real status of the power supply system in the steel factory, the paper produces the synthetical control project based on the study of power net harmonic in the factory. Firstly, the paper introduces the fundamental concepts of the occurrence, the hamu the controlling necessary and the real study status of the harmonic. Secondly, the paper analyzes some projects of harmonics manage . The paper carries on the monitor and analysises to the power network harmonic of the sreel factory, and gives comprehensive analytical result of power network harmonic circumstance ,puts forward the projects of harmonic manage. Finally, the paper manages to carry on the further research of harmonic manage , combining the circumstance of the sreel factory harmonic manage, and carries on the summary to the full text.