Study on Different Impacts on the Reliability of Grid Connecting with the Offshore and Onshore wind farms

As the wind power penetration continues to increase, one of the main challenges faced in power operation is to maintain the system reliability when committing an appropriate amount of power from a wind farm in the lead time. This paper presents an approximate model for estimating offshore winds in the domain of meteorology, raising the accuracy and comparability between offshore and onshore wind power. And then, considering the discrepancy in wind speed fluctuations between offshore and onshore sites and difference in operation characteristics between double-fed induction generators and permanent magnet synchronous generators, this paper studied the different influences on the reserve capacity due to the offshore and onshore wind farms committing the power system. Comparing with the onshore wind farms, offshore wind farms have more positive effective on the reliability of the grid and are suitable for more economic operation scheme.