Neutral earthing in Electrical System is the Very important for Equipment like Transformers, Generators, etc. Earth (Ground) has very low resistance. Earth (Ground) big conducting medium.
Neutral Earthing is always connected with 3-phase star point of the Transformer. Generator’s star point is also connected with Neutral Earthing. In Bipolar HVDC substation Neutral Point is also Earthed/Grounded.
Neutral Earthing has so many Advantages. Because of Neutral grounding earth fault protection becomes easier. Neutral Earthing draws unbalanced current in case of system gets unbalanced. By measuring that neutral current protection can be applied. Neutral grounding provides a very stable neutral point to whole system. As the Neutral is grounded, Phase to Earth voltage will not rise. Neutral Earthing can also reduce insulation failure.
So, Neutral earthing really helpful for system.
Width of maximum right of way permitted as per forest conservation act ‘1980 and its subsequent amendment dated 25 th October, 1992, are as per Table 1. Researches are being carried out for further optimizing the Right of Way. Guidelines of forest environmental rules shall be followed to avoid excessive tree cutting i.e. all the trees should be cut from root level in the 3 m corridor below each line conductor / earth wires. In the balance corridor, trees branches are only to be lopped to attain the specified clearance as per Table 1. Table 1 – Guidelines for Right of Way as per forest conservations act 1980 and subsequent amendment dated 25 th October, 1992 Line voltage (kV) 66 110 132 220 400 500 HVDC 765 Row width (Meter) 18 22 27 35 52 52 85 Electrical clearance: Electrical clearance while power lines crossing each other. In case of power line crossings, minimum clearance between lowest conductor of line and ground wire / top conductor of ...