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Frequency Control for a High Penetration Wind-Based Energy Storage System in the Power Network

Distributed Generation (DG) becomes a very impressive and renowned power generation system in the presence of the power engineering industry. It has economical as well as environmental benefits in respect of conventional power generation systems and develops new ideas to build up the system more effectively and reduce pollution in the environment. Due to the fluctuating behavior of Renewable Energy Sources (RES), balancing, demand and generation are not an easy task to control the power system. It is impossible to have a continuous power production from the RES because of natural situations. That’s why control of frequency in a power generation system makes it more challenging due to the increasing penetration of RES. In this paper, a control technique has been developed with two cases for a hybrid diesel / high-penetration wind-based energy storage system to control the frequency in the overall power system. The results show that without throwing the large amount of power in a secondary/dump load to maintain the desired level of frequency, a storage system (battery) can be charged when power from renewable energy sources is higher than load demand and discharged when power from renewable energy sources is less than total load demand. To investigate the fluctuation behavior of overall system a PID Controller has been used.