Electric Power ›› 2018, Vol. 51 ›› Issue (1): 36-43.DOI: 10.11930/j.issn.1004-9649.201711115

Previous Articles     Next Articles

Research on DC Collection and Transmission for Large Scale Renewable Energy Generation Clusters

YAO Liangzhong1, LIU Yanzhang2, YANG Bo1,2, CHEN Ning1,2   

  1. 1. State Key Laboratory of Operation and Control of Renewable Energy & Storage Systems, China Electric Power Research Institute, Beijing 100192, China;
    2. Jiangsu Engineering Technology Research Center for Energy Storage Conversion and Application, China Electric Power Research Institute, Nanjing 210003, China
  • Received:2017-11-12 Online:2018-01-05 Published:2018-02-28
  • Supported by:
    This work is supported by Science and Technology Project of State Grid of Corporation of China (No. NYN17201600314).

Abstract: With rapid development of advanced transmission technologies such as MTDC and DC grids, it may become one of main features for China's future grids that collect and transmit large renewable energy generation using DC technologies, and eventually form AC-DC hybrid power grids with high proportion of renewable energy generation connected. In this respect, a few studies have been conducted currently. This paper at first analyzes network topology characteristics of both renewable energy generation station and clusters are analyzed first. Based on the “lay and zone” criterion, a typical DC grid with multiple voltage levels for collection and transmission of large-scale renewable energy generation cluster is designed. The proposed design is presented based on scenario of Jiuquan renewable energy generation cluster. The requirements for transmission capacity, voltage levels and key equipment of such DC grid are also discussed. The results provide reference for future research of using DC technologies for collection and transmission of large-scale renewable energy generation cluster.

Key words: renewable energy generation, DC collection, DC transmission, DC grid, DC/DC converter

CLC Number: