摘要
柔性直流输电黑启动能很好地维持换流母线的电压稳定,并有效抑制可能出现的过电压问题,在此背景下,提出一种考虑后效性的柔性直流输电黑启动方案评估方法。首先,介绍柔性直流输电的运行特性;其次,综合考虑表征方案优劣的初期恢复评价指标和后效性评价指标,构建全面反映方案优劣的综合评价体系;然后,分别采用序关系分析法和改进CRITIC法确定主客观权重,在此基础上利用基于博弈论的组合赋权法求得各待评价指标的组合权重,并采用逼近理想解排序法对满足各类约束条件的柔性直流输电黑启动方案进行综合评价以确定其优劣程度。最后,以鲁西背靠背柔性直流通道对云南电网大停电后的供电恢复为研究背景,验证所提评估方法的有效性。
The black start scheme for VSC-HVDC can maintain the voltage stability of the converter bus and effectively suppress the possible overvoltage problems.Under this background,an evaluation method is proposed for the black start scheme of VSC-HVDC considering aftereffects.Firstly,the operation characteristics of VSC-HVDC are introduced;Secondly,the initial recovery evaluation index and aftereffects evaluation index are comprehensively combined to characterize the pros and cons of the scheme.A comprehensive evaluation system is then established to fully reflect the pros and cons of the scheme.Thirdly,the order relation analysis method and the improved CRITIC method are utilized to determine the subjective and objective weight respectively.The combination weighting method based on game theory is then employed to obtain the combination weight of each index to be evaluated.Furthermore,a comprehensive evaluation of the black start scheme of HVDC satisfying all kinds of constraints is analyzed to determine the advantages and disadvantages.Finally,the feasibility of proposed method is verified by the restoration of the power supply with Luxi back-to-back VSC-HVDC system after a blackout in Yunnan power grid.
作者
刘旭斐
吴琛
张丹
黄伟
李鹏飞
LIU Xufei;WU Chen;ZHANG Dan;HUANG Wei;LI Pengfei(Yunnan Electric Power Dispatching and Control Center,Yunnan Power Grid Co.,Ltd.,Kunming 650011,China;School of Electrical and Electronic Engineering,North China Electric Power University,Baoding 071003,China)
出处
《电力科学与技术学报》
CAS
北大核心
2020年第6期110-116,共7页
Journal of Electric Power Science And Technology
基金
云南省电力公司科技项目(yndw(2016)000303DD00085)。
