Standard 13.8kV Generator BIL levels??
Standard 13.8kV Generator BIL levels??
(OP)
I need some help finding the standard BIL levels for synchronous generators. Does any one have a link or reference?
The application I am designing has a 50kV BIL (4.5MW) and the Utility is stating this is not hign enough for connection to their system, so they are requesting an isolation transformer.
Standard switchgear at this voltage range is 95kV Bil. Is there a way to increase this BIL level or minimize this weak point in the system with lightning/surge arrestors or something else?
Thank you.
The application I am designing has a 50kV BIL (4.5MW) and the Utility is stating this is not hign enough for connection to their system, so they are requesting an isolation transformer.
Standard switchgear at this voltage range is 95kV Bil. Is there a way to increase this BIL level or minimize this weak point in the system with lightning/surge arrestors or something else?
Thank you.






RE: Standard 13.8kV Generator BIL levels??
RE: Standard 13.8kV Generator BIL levels??
RE: Standard 13.8kV Generator BIL levels??
I agree with David that the transformer is ideal but my client wants to avoid if possible.
I can not find typical Basic Impulse Levels for generators. What are typical #'s?
RE: Standard 13.8kV Generator BIL levels??
A surge diverter is invariably used with generators connected to grid. Almost all generators have a transformer in between.
* Basically, I would like a full-time job on part-time basis *
RE: Standard 13.8kV Generator BIL levels??
Surge mitigation could be achieved with a combination of different techniques such as generator grounding, surge arrester, surge capacitor, etc. However, this may not be enough to convince the power utility about their requirement. An insulation coordination study may be another alternative. Beware this study may delay the project and adding cost without guaranty to eliminate the transformer required by the utility.
RE: Standard 13.8kV Generator BIL levels??
RE: Standard 13.8kV Generator BIL levels??
=====================================
Eng-tips forums: The best place on the web for engineering discussions.