Average Dynamical Frequency Behaviour For Islanded Micro-Grid System With Multiple Generators

Marodzuan, Adlia (2019) Average Dynamical Frequency Behaviour For Islanded Micro-Grid System With Multiple Generators. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

A microgrid is a part of a power system which can operates in grid connected and islanding mode with multiple generators connected to the microgrid. When the microgrid operates in island mode, the load is dominantly supplied by the local sources. The crucial situation is supply and demand need to be balance while the generators in the same system is actually not in coherent. If there are any imbalance in the network, the system can lead to significant frequency deviations. This is why this project need to be done to study the behavior effect of the frequency. In order to analyses the network, lots of mathematical equations has been derived to model the physical network. The objective of this paper is to investigate how to model on islanding of microgrid system with multiple generators and to identify an approach in finding the average dynamical frequency, also to analyze the frequency behaviour with variation of load demand. The literature review, reviews other people papers on the understanding of microgrid and distributed generation which related to the power system study involved the large electrical power system network with multiple generator. The two generator model involving tie-line bias control is simulated in linear time invariant through state space equation using Simulink. All the parameters are set and substitute in the state space equation. The simulation results show the frequency behavior of the generator in the system when there is load change occur to the system. The frequency of the generator that is near to the load change will drop more compare to the other generator and with the presence of automatic generation control, the frequency will return back to its nominal value. The average dynamical frequency is find using similarity method and compared with the conventional method.

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