Research on Grounding Protection Technology of 660 V Power System at Coal Preparation Plant
Abstract：The features of 660 V three-phase three-line power distribution systems are neutral grounding system. The applied method of grounding resistance value choice is discussed. One is the calculation method about current of single-phase ground capacitance when the neutral metal grounded; and the other setting method is about the system leakage （zero sequence current） protector. These two methods are introduced, which provide reference for on-site protection setting technology.
Keywords：grounding systemsingle-phase grounding capacitance currentgrounding resistance
Publication Date：2012-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 30-32,37 )