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| Cause analysis and treatment of low stator insulation for 1050MW generator |
| Guo Jianxian |
| Shenhua Funeng Power Generation Co., Ltd, Shishi, Fujian 362700 |
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Abstract The generating sets stator cooling water Combining-flow pipe of a 1050MW power plant is direct grounding structure. The insulation resistance of the stator is below 0.1MΩ frequently during the start-up of the sets, which is unable to meet the requirements of generator manufacturers, and affects the unit bring online. Taking domestic 1050MW generating sets as an example, this paper analyzes the reason of low stator insulation of generating units, reveales the factors influencing the Insulation resistance, and proposes the control and disposal scheme to effectively solve the problem.
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Received: 06 November 2018
Published: 16 July 2019
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2019, Vol. 20 
