How are Substation protected? [Ashuganj Power Station Company Limited- 2011]
Almost all of the equipment inside of a substation is used for the purpose of protection. The circuit breakers and power transformers in the substation are equipped with current transformers (CTs) that step down the current passing through the equipment to a level that can be read by protective relays. These protective relays can cause the breakers to trip upon many different events including under/over voltage, current spikes. frequency issues, transformer/bus differential, etc. The breakers in
a substation are placed strategically so that different pieces of equipment of sections of a circuit can be isolated without loss of service to the customer.
a substation are placed strategically so that different pieces of equipment of sections of a circuit can be isolated without loss of service to the customer.
Reference: 1. http://www.answers.com/Q/How_are_Substation_protected
2. Perfect Guide: Page No - 484, Question No-3
No comments:
Post a Comment