MATLAB Model of Intelligent Electronic Device for Synchronization
- March 27, 2018
- Posted by: RSIS
- Category: Electrical and Electronics Engineering
International Journal of Research and Scientific Innovation (IJRSI) | Volume V, Issue III, March 2018 | ISSN 2321–2705
MATLAB Model of Intelligent Electronic Device for Synchronization
Jayesh M. Suryawanshi
Electrical Engineering, Pune University, Maharashtra, India
Abstract- Microgrid rarely operates in parallel with the main grid. Microgrid operates in an islanded mode or grid connected mode. When the connection with the grid is required, this referred to as synchronization. The synchronization of generator with grid by using traditional synchronizer is easy method of synchronization, but the synchronization of microgrid with the main grid is very difficult because microgrid operates with multiple Distributed generators that produced power together and critical loads. This paper proposes an Automatic synchronization scheme that provides the smooth synchronization of microgrid with main grid.
Keywords- Microgrid, reference frame transformation, Signal conditioner, IED, angle detector.
I. INRODUCTION
A. Introduction of Microgrid
The microgrid is defined as a subsystem of distributed energy sources and their associated loads. Also microgrid is made up of large numbers of on-site distributed generator (DGs), as well as electrical and thermal loads. Microgrid can be stand as alone system or it can be tied with ac grid that it separate from during disturbances.
B. Synchronization of Generator with other generator or with an n infinite busbar system
When paralleling ac generator with other generator, it is necessary to make the values of the phase angle difference, slip frequency, and voltage difference as small as possible. These three conditions are referred to as the synchronizing criteria. By closing the circuit breaker when the criteria are satisfied, two individual systems may begin parallel operation.
Synchronizing the generator to other ac power system is very important but it is not simple than synchronization of generator. Because when we close the circuit breaker at that time short circuit current will produce that will harmful to the system equipment.
C. Synchronization of a Microgrid with an EPS
The traditional method used to start the parallel operation with an EPS can be grouped into two types. One is manual method in which operator throws a switch close command according to the synchroramps or synchroscope with the assist of the synch check relay.
