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HVDC Connection of Offshore Wind Farms to the Transmission System

HVDC Connection of Offshore Wind Farms to the Transmission System. 授課教師 : 吳元康 老師 學生 : 詹博雄. Introduction. This paper presents a technical and economic analysis to evaluate the benefits and drawbacks of grid connecting offshore wind farms through a dc link.

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HVDC Connection of Offshore Wind Farms to the Transmission System

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  1. HVDC Connection of Offshore Wind Farms to theTransmission System 授課教師:吳元康 老師 學生:詹博雄

  2. Introduction • This paper presents a technical and economic analysis to evaluate the benefits and drawbacks of grid connecting offshore wind farms through a dc link.

  3. TECHNICAL ANALYSIS OF THE CONNECTION OPTIONS

  4. 100MW AC

  5. 100MW DC

  6. 200MW AC

  7. 500MW AC

  8. TECHNICAL ANALYSIS OF THE CONNECTION OPTIONS

  9. ECONOMIC ANALYSIS: COMPARISON OF THE CONNECTION OPTIONS • O&M: operation and maintenance • ENS : the value of losses and of energy not supplied

  10. ECONOMIC ANALYSIS: COMPARISON OF THE CONNECTION OPTIONS • This especially impacts the economics of the 100-MW wind farm. • Economic assessment includes sensitivity analyses of parameters, which could impact the 100-MW wind farm: distance, component costs, dc converter reliability, and dc converter losses.

  11. ECONOMIC ANALYSIS: COMPARISON OF THE CONNECTION OPTIONS

  12. ECONOMIC ANALYSIS: COMPARISON OF THE CONNECTION OPTIONS

  13. CONCLUSION • For all the case studies, the HVDC solution is more expensive than the ac, partly because of higher total investment costs at the considered connection distance of 60 km. • Nevertheless, the results of sensitivity analyses performed for various parameters (connection distance, cost of cable protection, and cost and reliability of converter stations) show that HVDC appears to be the cheapest option to connect a 100-MW wind farm at distances greater than 90 km to the shore.

  14. CONCLUSION • Evaluations performed within this research activity and the present experience with VSC-HVDC connection of offshore oil/gas platforms allows us to believe that HVDC is a promising technology with growth potential for applications in the connection of offshore wind farms.

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