Hello All,
There is a existing 400kV switchyard and a new 400kV switchyard is proposed which will be connected through the existing switchyard through busbar extension. Please clarify following.
1. Whether any lighting arrester is required.
2. Whether bus coupler is required in the new switchyard. This new switchayard is proposed to be connected with the 765kV switchyard through interconnecting transformer and station transformer for the start up power of the generating station. The start up power shall be arranged from existing switchyard.
Looking for your quick responses.
Regards
Manish