The ABB Protection Application Handbook in the series of handbooks within the LEC support programme of BA THS BU Transmission Systems and Substations.
This handbook covers most aspects of protection application based upon extensive experience of our protection specialists like:
- Selection of protection relays for different types of objects.
- Dimensioning of current and voltage transformers matching protection relays requirements.
- Design of protection panels including DC and AC supervision, terminal numbering etc.
- Setting of protection relays to achieve selectivity.
- Principles for sub-division of the protection system for higher voltages.
The handbook gives a basic introduction to application of protection relays and the intent is not to fully cover all aspects. However the basic philosophy and an introduction to the application problems, when designing the protec- tion system for different types of objects, is covered.
The intention is to have the application as hardware independent as possible and not involve the different relay types in the handbook as the protection relays will change but the application problems are still the same.
The different sections are as free standing sections as possible to simplify the reading of individual sections. Some sections are written specially for this handbook some are from old informations, lectures etc. to bigger or smaller extent.
Contents
- Network General
- Fault calculation
- Network earthing
- Protection General
- Protection Line
- Protection Transformer
- Protection Reactors
- Protection Capacitors
- Protection Bus and Breaker
- Earth Fault protection
- Current transformers
- Voltage transformers
- Requirement on current transformers
- Control System structure
- Protection settings
- Sub divided systems
