VSC-MTDC System Integrating Offshore Wind Farms Based Optimal Distribution Method for Financial Improvement on Wind Producers

Abstract

As the typical clean and renewable energy, wind energy has witness a continuous annual increase in last few decades. Due to the random and intermittent characteristics, the wind producers in the electric market meet serious financial losses caused by deviation between the actual power output and forecasting result. Increasing the accurate of forecasting is difficult to achieve in a short time, how to improve the financial income has become a major task to wind producers and academia. As the backbone network of the offshore wind farms, VSC-MTDC has been regarded as one of the effective solutions to transport wind power. In this paper, an optimal distribution method is proposed for VSC-MTDC system integrating offshore wind farms to reduce the financial loss due to deviation between the actual wind power output and forecasting result. The proposed method could be divided into two parts. The first part of the proposed method is to analyze the onshore external system according to the historical system operation data and adjust the droop coefficient with analytic hierarchy process. The second part of the proposed method is to do the further adjusting according to the regulating price. With the simulation results, the proposed optimal distribution method is proved that it could bring more benefit to wind producers without more additional investment.