How to choose the neutral earthing mode of main power transformer in 110kV power network;

Neutral point earthing mode of generator in a project was analysed and neutral point earthing transformer characteristics were calculated.

In accordance with three types of blade earthing modes for disconnector with earthing switch blades of overhead contact line in subway, by comparison based on the system principles, it obtains the conclusion that the mode connecting from rail to negative pole is rather reasonable, and proposes to adopt the mode connecting the earthing blades to the rail during construction.

Anti-interference analysis for the grounding methods of control cable shielding line;

Study of neutral grounding method based on manual earthing & dividing current technique for small current earthing systems;

Discussion on application of arc-suppression coil grounding method in 10 kV distribution network systems;

Analysis on grounding mode of transformer neutral-point;

Neutral grounding modes for 10 kV system;

This paper introduces the grounding system and various grounding modes, and puts forward the grounding system, electric protection methods and grounding measures that the modern intellectualized buildings should adopt.

The principle and analysis of sheath grounding and application of grounding way in practical running of cable were also introduced.

By analyzing all kinds of grounding ways of city electric grid in our country,combining four possible projects to select transformer,points out DG units should select applicable grounding way to connect electric grid according to different power system.

Finally, the influence of various shielded wire grounding ways on electromagnetic coupling is discussed.