科研之友
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摘要
This paper presents a two-step method for dimensioning and time-sequential operation of Wind-hydrogen (H(2)) plants operating in power markets. Step 1 involves identification of grid constraints and marginal power losses through load flow simulations. Step 2 involves solving a model for optimization of the component sizes (wind turbine, electrolyser, H(2) storage, fuel cell) and the corresponding time-sequential operation of each component. Results are presented through a case study of a Norwegian island with good wind resources, a weak connection to the main transmission grid and a commuting ferry, constituting the H(2) load. Main results show that if H(2) consumers are willing to pay at least 0.31-0.34 (sic) per Nm(3), the wind power penetration could be cost-effectively increased by 1.8-1.9 MW by including an average H(2) load of 1.36 MW. The H(2) plant is very dependent on power import and H(2) storage capacity is only 1.5 - 2 days of average demand. The operational flexibility of the H(2) plant opens for a more optimal power exchange with the grid. It is concluded that H(2) produced from wind power could be competitive with fossil fuels. H(2) is however not cost-effective as electric energy storage for wind power plants operating in power markets.
- 出版日期2009-6
