Research on onepoint grounding protection of generator rotor

Abstract

Abstract:

Rotor grounding protection is one of the important parts of protection system of generator transformer unit. At present the rotor grounding protection cannot be double configured because of the protection principle. In order to become a real double configuration of onepoint grounding rotor protection, the features of onepoint grounding protection of rotors are studied. Simultaneous operation of injecting DC rotor onepoint grounding protection and injecting AC rotor onepoint grounding protection is put forward as a scheme. The two sets of onone point grounding protection can be used dependently and independently. The field test indicates that the double configuration of rotor grounding protection can meet the operation requirements on site.

Key words:

generator, rotor, injecting DC rotor onepoint grounding protection, injecting AC rotor onepoint grounding protection, double configuration

WANG Xiuxia1, WANG Xuerong1, YAN Han1, HE Yiming1, LIU Xiaobo2.

Research on onepoint grounding protection of generator rotor

[J]. Huadian Technology, 2018, 40(4): 19-21.

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Research on onepoint grounding protection of generator rotor

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