Lets say the grid is at ideal frequency 50 hz then the large load is shut of due to which frequency increases beyond 50 which tends to rotate all turbines faster than their previous speed but at the the same load throw of setting tries to reject the load by decreasing the fuel and mass flow so on doing so the rpm will fall down but at this very small moment grid frequency is higher than alternator frequency.
Total rotating mass kinetic energy(inertia of system) played important role in transient disturbances, hence to increase inertia system is connected by tie lines with neighboring state or even country, to avoid disturbance with heavy transient disturbances, in your case when load is thrown off, the rise in frequency time could be avoided by increasing interconnection, with in response time of governor and to control input....
The most important point is to avoid heavy transient disturbances when load is disconnected , by increasing interconnection during governor response time.
- Badges
- Science topic
- Similar topics
- Biological Science
- Bioecology
- Systems Ecology
- Landscape Ecology
- Connectivity