考虑后效性的柔性直流输电黑启动方案评估方法
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TM74

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云南省电力公司科技项目(yndw(2016)000303DD00085)


Evaluation method of blackstart scheme with VSCHVDC considering aftereffects
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    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。

    Abstract:

    The black start scheme for VSCHVDC 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 VSCHVDC considering aftereffects. Firstly, the operation characteristics of VSCHVDC 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 backtoback VSCHVDC system after a blackout in Yunnan power grid.

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刘旭斐,吴琛,张丹,等.考虑后效性的柔性直流输电黑启动方案评估方法[J].电力科学与技术学报,2020,35(6):110-116.
LIU Xufei, WU Chen, ZHANG Dan, et al. Evaluation method of blackstart scheme with VSCHVDC considering aftereffects[J]. Journal of Electric Power Science and Technology,2020,35(6):110-116.

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  • 在线发布日期: 2021-04-16
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