Due to high emission and high costs in the self-generation system of offshore oil and gas platforms, the technology of offshore wind farms supplying power to offshore oil and gas platforms have been studied. In this paper schemes are proposed: complementary power supply between offshore wind farms and gas turbine or crude oil power station, complementary power supply between offshore wind farms and power grid, and complementary power supply between offshore wind farms and energy storage. Analysis for the three schemes has been performed from the aspects of power quality, load balance, energy conservation and emission reduction. The analyse show that in terms of the characteristics of offshore wind farms and offshore oil and gas platforms of different capacities, the first scheme is more suitable to be a preliminary demonstration project; the second scheme can be adopted for newly-built offshore oil and gas platforms based on the demonstration of the first scheme; the third scheme can be used for unmanned platforms or marginal oil fields where a power supply line needs to be laid separately. Through the research on this technology, the electricity consumption problem of offshore wind farms can be solved, the carbon emission and power generation cost of oil and gas platforms are reduced simultaneously. This research can provide strong technical support for the coordinated development of offshore wind power and oil and gas industry in the future.
With the development of global industry, the greenhouse effect has intensified, and the global average temperature has risen by about 1.2 degrees Celsius compared with before (World Meteorological Organization, 2021). The energy industry has the greatest impact on greenhouse gas emissions. In the oil and gas industry, a large number of fossil fuels were consumed in resource exploration, refineries, power generation, and primary energy transportation, which is the leading way of carbon dioxide emissions. With global carbon neutrality pushing forward, the green energy industry is developing rapidly, and offshore wind power projects have begun to be researched and implemented globally. There are advantages of offshore wind power such as high wind speeds, tremendous wind resources to be exploited, and no negative effects like vision pollution and noise. By utilizing wind farms to supply power for offshore oil and gas platforms, a large amount of fossil fuel consumption and greenhouse gas emissions like carbon dioxide can be reduced. However, the randomness of wind energy will cause power output fluctuations, affecting the stability of the power system and endangering the safe operation of the system in severe cases. Thus, research on the power supply method of offshore wind power should be conducted, and measures should be taken to deal with the fluctuations in wind power.
