Study On Harmonics Analysis And Measuring Method Of Transformer Substation

Starting from the actual necessities in this paper. Analyzed the reason that caused the harmonic and introduced the inde of harmonic testing. Introduced the methods, advantages and disadvantages of harmonic testing in power system. Present a new method of harmonic testing based 500KV substation. Gived a introduction of the principle of CT ending voltage signal amplifier,and had a testing in the harmonic testing laboratory of the power experiment research institute,the outcome show very well of the linear degree and come to the intend demand,the method can satisfy the requirement of scene testing. Based the new method of harmonic testing,the method have used in the substion of 500KV the west of Cangzhou,Nangong substion and Wangduan subsiong,the consequence show that the scheme intended reasonable,operating reliable and come to the expect target.