3

Auxiliary System Protection

In general, protection engineering requires a high degree of technical expertise and experience with the nuances and operation of generating stations. Practicing protection engineers also assume significant responsibility. They are concerned about personnel safety, and try to protect the apparatus on one hand and not cause nuisance tripping or unnecessary outages on the other. In essence, they are performing a balancing act and do their best to leave themselves in a defendable position. They also need to make sure that their settings coordinate with other relays or functions.

This chapter covers the protective relaying of low and medium voltage systems that provide the necessary auxiliary power for generating ...

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