Research on Compact Layout of Large Capacity Offshore Flexible DC Converter Station

Abstract

[Introduction] Due to the technology blockade by foreign manufacturers, the research on the application of large capacity offshore flexible DC transmission technology in China is still in a blank stage. The paper presents a compact layout scheme for the large capacity offshore flexible DC converter station, which not only meets the requirements of process flow, but also minimizes the size of the platform. [Method] According to the function orientation and working principle, the converter station could be divided into five areas: AC field, valve hall, bridge arm electric reactor area, DC field and auxiliary room. Through the study of the layout principle of each area, the recommended layout scheme was given. [Result] The compact layout plan plays an important role in improving the reliability of the offshore converter station, alleviating construction and maintenance work and reducing the overall cost of the project. [Conclusion] Flexible DC transmission is developing towards the direction of large capacity, high voltage and long-distance transmission, which is the best proposal for large capacity offshore wind power output. The compact layout scheme proposed in the paper can play a good role in guiding the large capacity offshore flexible DC converter station, and has a high reference value.

Keywords

• compact layout
• flexible dc
• offshore converter station