Imperial College London
Portrait Picture

Professor Tim Green, FREng

Faculty of Engineering, Department of Electrical and Electronic Engineering

Academic Leader for Sustainability, Professor
 
 
 
//

Contact

 

+44 (0)20 7594 6171t.green Website CV

 
 
//

Location

 

1107EElectrical EngineeringSouth Kensington Campus

//

Summary

 

Publications

Citation

BibTex format

@inproceedings{Xiang:2016:10.1049/cp.2016.0386,
author = {Xiang, X and Merlin, MMC and Green, TC},
doi = {10.1049/cp.2016.0386},
publisher = {IET},
title = {Cost Analysis and Comparison of HVAC, LFAC and HVDC for Offshore Wind Power Connection},
url = {http://dx.doi.org/10.1049/cp.2016.0386},
year = {2016}
}
Download

RIS format (EndNote, RefMan)

TY  - CPAPER
AB  - Low frequency AC (LFAC) has been proposed as a means toavoid some of the large converter station costs of high voltageDC (HVDC) while delivering some of the benefits in terms ofbetter line or cable utilization and its technical feasibility hasbeen established. It is said to offer a lower costs than HVDC orconventional high voltage AC (HVAC) for a range ofintermediate distances, with HVDC becoming cheaper overlong distances. However, the basis for identifying the distancerange and extent of cost saving has not been established. Here,cost estimate methodologies are extended for LFAC. Adifficulty is the absence of commercial schemes that canprovide practical examples of costs. In this paper, costs arebroken down into constituent terms and estimates are madefrom the most similar equipment from other schemes. Thecapacity limits and power losses associated with subsea cablesare analyzed for low frequency cases. For a given powertransfer and for each distance, a choice of operating voltage,cable size and number of parallel circuits is made in order tofind the lowest route cost. This yields cost as a function ofdistance that is a non-linear and discontinuous function. Thecost curves for LFAC are compared with HVDC and HVACoptions. The results for current cost estimates show that LFAChas a range of route length over which it is the lowest costoption and but this range narrows and eventually ceases to existfor higher power transfer ratings.
AU  - Xiang,X
AU  - Merlin,MMC
AU  - Green,TC
DO  - 10.1049/cp.2016.0386
PB  - IET
PY  - 2016///
TI  - Cost Analysis and Comparison of HVAC, LFAC and HVDC for Offshore Wind Power Connection
UR  - http://dx.doi.org/10.1049/cp.2016.0386
UR  - http://hdl.handle.net/10044/1/30859
ER  -
Download