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This paper presents frequency control of a hybrid renewable energy system comprised of wind farms, fuel cell and battery with the main contribution of wind energy conversion system. Wind farm generated power varies by wind speed changes and therefore, high penetration of wind farms into the network decreases the system inertia and causes severe frequency deviation. Due to this fact, it is necessary...
Two smart frequency control schemes are presented in this paper. The first one is an adaptive under-frequency load shedding (UFLS) scheme, and the second one is system frequency control scheme based on energy storage and wind farm. The UFLS is developed based on a new and simplified methodology for an estimation of the magnitudes of disturbances (EMD). Using the estimation results, the UFLS can be...
In order to keep the power system equilibrium, system supply needs to be equal to the load demand continually. The existing synchronous generators are mostly capable to keep the system balance in traditional power system. However, in power systems with wind power penetration, due to random nature of wind energy, keeping electricity supply-demand balancing has been got more difficult. Such systems...
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