> AREVA NP GmbH <AREVA NP

> AREVA NP GmbH <AREVA NP

Electrical Protection for Diesel Generators in Nuclear Power Plants

Dr. Plamen WatschkowAREVA NP

Germany

> AREVA NP GmbH • Dr. Watschkow, NLIP_G, 29.05.2009, BULATOM 3AREVA NP All rights are reserved, see liability notice.

Electrical Protection for Diesel Generators in Nuclear Power Plants

GProtection ofEngine

SynchronizationI&C

Auxiliary Systems Power Supply

Protection ofGenerator

Emergency Diesel Generator (EDG)

> AREVA NP GmbH • Dr. Watschkow, NLIP_G, 29.05.2009, BULATOM 4AREVA NP All rights are reserved, see liability notice.

Electrical Protection for Diesel Generators in Nuclear Power Plants

> AREVA NP GmbH • Dr. Watschkow, NLIP_G, 29.05.2009, BULATOM 5AREVA NP All rights are reserved, see liability notice.

Electrical Protection for Diesel Generators in Nuclear Power Plants

> 1. Protection concept

The redundancy concept

The tripping concept

Protection function scope

> 2. The maintenance and testing procedure

> 3. The indication processing and the communication

> AREVA NP GmbH • Dr. Watschkow, NLIP_G, 29.05.2009, BULATOM 6AREVA NP All rights are reserved, see liability notice.

Electrical Protection for Diesel Generators in Nuclear Power Plants

> AREVA NP GmbH • Dr. Watschkow, NLIP_G, 29.05.2009, BULATOM 7AREVA NP All rights are reserved, see liability notice.

Electrical Protection for Diesel Generators in Nuclear Power Plants

> AREVA NP GmbH • Dr. Watschkow, NLIP_G, 29.05.2009, BULATOM 8AREVA NP All rights are reserved, see liability notice.

Electrical Protection for Diesel Generators in Nuclear Power Plants

Configuration

Test and diagnosisFault evaluation

> AREVA NP GmbH • Dr. Watschkow, NLIP_G, 29.05.2009, BULATOM 9AREVA NP All rights are reserved, see liability notice.

Electrical Protection for Diesel Generators in Nuclear Power Plants

Summary

> The application of numerical protection relays brought about considerable benefits in terms of enhanced performance, reliability and availability of the protection system

> The increase in functionality in the numerical protection relays requires a well-designed protection and information system, making the best of the many different opportunities