The basic requirement of any power system protection scheme is: Selectivity. Stability.
What are the basic requirements of protection?
Basic Requirements of Protection System
- Reliability and Simplicity:
- Selectivity and Discrimination:
- Speed of Operation:
What is the need for power system protection?
The main objective of using power system protection is to detach the faulty section from the system to make the rest of the portion work without any disturbance. In addition to this, it is used for the protection of power system and prevent the flow of fault current.
What factors are required for designing protective system?
Designing a protective system can be complex because you must consider many factors:
- Soil classification.
- Depth of cut.
- Water content of soil.
- Changes due to weather or climate.
- Surcharge loads (eg., spoil, other materials to be used in the trench)
- Other operations in the vicinity.
What is the need of protection *?
As your main source of income, protecting your business is important to ensure your continued financial security. Having a plan in place can help ensure your business continues to run smoothly should the unexpected happen. Protect your business against the permanent loss of a key person due to death or disability.
Why is speed of protection so important?
Speed of operation is the ability of the protection system to operate in a short time after fault inception. Fast operation is important in preserving system stability, reducing equipment damage, and improving power quality.
How many types of protection are there?
There are two types of overload protection: instantaneous overcurrent (IOC) and time overcurrent (TOC). Instantaneous overcurrent requires that the current exceeds a predetermined level for the circuit breaker to operate. Time overcurrent protection operates based on a current vs time curve.
What is protecting system?
Current Approved Definition: Protective relays, associated communication systems, voltage and current sensing devices, station batteries and DC control circuitry.
What is protection system design?
A proper protection system guarantees reliable and safe operation for a geothermal power plant. It is one of the most important factors during system engineering design and must be carefully selected to avoid equipment damage due to failures.