Grid Access Solutions Interconnecting Large Bulk Power On- / Offshore Wind Park Installations to the Power Grid

TLDR: In this paper, the advantages of using both ACand/or HVDC transmission will be compared from technical and economical aspects, and the basic arrangements of different technical solutions, which can be used to interconnect and transport the electrical energy from far remote located wind parks to the local consumer's at large industrial or residential areas.

Abstract: Large wind turbine/ wind park Installations are developing to an important alternative of renewable energy resources. Wind park installations with a rated capacity of several hundred Megawatts up to more than 1000 MW installations for future offshore applications are under investigation in different countries. This paper will give an overview on planning and applications studying such large applications. Both the transmission technologies and the Grid Code requirements are in discussion with the Power Grid Utilities to find the most economical and reliable technical solutions. Long distance underground and sea cable transmission may be used either in HVDC or HVAC technology for some of these applications: Also Power Quality and Reactive Power Compensation / FACTS devices may be used to improve transmission capacity and dynamic stability of such transmission systems. The presentation will provide a summary on the present technologies available and the necessary planning/design steps. The advantages of using both ACand/or HVDC transmission will be compared from technical and economical aspects. The presentation will include some examples to demonstrate some specific design principles, the basic arrangements of different technical solutions, which can be used to interconnect and transport the electrical energy from far remote located wind parks to the local consumer’s at large industrial or residential areas.