Analysis and countermeasures of delayed action of generator stator grounding protection. Issue 1 (January 2021)

• Record Type: Journal Article
• Authors: Liu, Shifu; Qian, Zhunli
• Is Part Of: IOP conference series. Volume 645:Issue 1(2021)
• Publication Date: 2021-01
• Subjects: Earth sciences -- Periodicals; Environmental sciences -- Congresses; Environmental sciences -- Periodicals; 550.5
• DOI: 10.1088/1755-1315/645/1/012041
• Languages: English
• ISSNs: 1755-1307

Abstract

Abstract: The friction between the iron core and the wire rod caused insulation damage, which caused the wire rod to discharge to the ground, the generator stator ground protection action, and the generator stopped, through the analysis of the reasons, the generator operation preventive measures were formulated, and the delay time of the stator grounding protection was shortened and neutrality was adjusted. The improvement measures for shortening the delay time of stator grounding protection, adjusting the neutral point TV transformation ratio, increasing the impedance of the secondary load, and unified protection clock are proposed. These improvement measures provide useful experience for engineering and technical personnel to deal with related similar problems.