Prediction of System Inertia and its Effect to Integrate Tidal Generators

System inertia and frequency response reserves play a vital role in controlling the stability of the system during a disturbance. Due to increased penetration of renewable power generators, the overall system inertia as well as reserve power margin are being reduced. To overcome these problems, this paper presents a new technique to forecast inertia of the system and also enhances overall inertia as well as frequency response reserves through tidal generators (tidal generators are the cheapest and the newest form of renewable generators). Online system inertia is calculated using phasor measurement units to evaluate the adequacy of frequency control services. Inertia, droop and supplementary control schemes are implemented on tidal generators to provide adequate inertia and active power support to the system. The parameters of these control schemes are computed through the rate of change of frequency and the maximum frequency drop. These schemes make renewable sources the same as synchronous generators, and power output varies according to system disturbance to achieve a satisfactory frequency control. In this paper, mathematical design and different challenges of the application associated with the control scheme are presented. For validation of the control schemes and its efficacy, MATLAB simulation is carried out.