Notes on PSI is a write up that covers some of the basic points on Traction Substation and Traction Switching Stations. To view the same in PDF format click the link below :
Posted by Anup Mohan on Thursday, November 3, 2011,
In :
Transformers
Any transformer is rated based on their losses. The losses of the transformer i.e. the Iron loss depend on the voltage and the copper loss depends on the current. Since the loss does not depend on the power factor, a transformer is rated in terms of kVA (kilo-Volt-Ampere).
A transformer is sized based on the load connected to it. There are two types of load, viz. Continuous load and Intermittent load. As the name suggests, continuous load will always be connected with to secondary of the tran... Continue reading ...
Posted by Anup Mohan on Sunday, October 30, 2011,
In :
Transformers
From the previous posts, it can be inferred that, ultimately at a Substation, either a Voltage level is stepped up or stepped down aiding to the transmission or distribution of power. Hence, we can say that the Transformer is the core of a substation which is supported by other equipment for protection.
Primary function of a Power Transformer is to transform voltage form a nominal level to another. In most cases, the use of two smaller size transformer, to operated in parallel in one circuit i... Continue reading ...
