基于鲁西背靠背柔性直流系统的南方电网黑启动方案

摘要

根据南方电网异步联网后的结构特点,提出了基于鲁西背靠背柔性直流系统的南方电网黑启动方案.首先,从云南异步联网运行的特点及对南方电网黑启动目标网架的影响出发,分析了鲁西背靠背柔性直流系统应用于电网黑启动的优势,提出了柔性直流系统的黑启动策略.在此基础上,研究了基于柔性直流系统的南方电网黑启动方案,并给出了利用鲁西背靠背柔性直流系统恢复云南电网和南方电网主网的详细路径和具体步骤.最后,通过现场试验和RTDS仿真验证了所提黑启动方案的可行性和有效性.%Based on the structure characteristics of China Southern Power Grid(CSG) after asynchronous interconnection, this paper proposes the black-start scheme of CSG based on Luxi Back-to-back VSC-HVDC System.Firstly, from the characteristics of asynchronous interconnection of Yunnan power grid and its impact on the target framework of the black-start stage of CSG, the advantages of Luxi Back-to-back VSC-HVDC being applied to power grid black-start are analyzed and the black-start strategy of VSC-HVDC system is proposed.Then, the VSC-HVDC based black-start scheme suitable for CSG is put forward, meanwhile the start-up paths and operation steps to restore Yunnan power grid and the main grid of CSG with Luxi Back-to-back VSC-HVDC system are presented.At last, field test and RTDS simulation verify the validity and effectiveness of the proposed black-start strategy.