电力系统自动化2025，Vol.49Issue(17)：56-67,12.DOI:10.7500/AEPS20240929002
计及陆上电网外送能力影响的海上直流系统经济并网规划
Economic Grid-connected Planning of Offshore DC System Considering Transmission Capability of Onshore Power Grid
摘要
Abstract
Current voltage source converter based high-voltage direct current(VSC-HVDC)system has gradually become one of the main ways for the grid-connection of large-scale offshore wind power clusters.However,due to the high construction costs of converter stations and high-voltage direct current submarine cables,the economic grid-connected planning of offshore VSC-HVDC systems has always been one of the key issues in the grid-connected planning of offshore wind power clusters.Considering the low utilization rate of equipment for offshore transmission system caused by wind power fluctuations,the phenomenon of offshore wind power curtailment due to insufficient external transmission capacity in the onshore power grid under grid-connection of large-scale offshore wind power,and the flexible active-reactive power control capability of VSC stations,this paper constructs a bi-layer nested grid-connected planning model of VSC-HVDC system for offshore wind farm clusters that integrates the"N+"principle with the active-reactive power flexible operation region of the common coupling point under multiple DC integration.By optimizing the equipment selection under the"N+"principle and the siting,sizing and topology optimization of converter stations for the offshore VSC-HVDC system,from two aspects of saving investment costs in grid-connection of VSC-HVDC system and improving the energy consumption of offshore wind power by onshore power grids,the optimal life cycle benefits of offshore wind power clusters can be achieved.关键词
海上风电/柔性直流/并网规划/选址定容/陆上电网Key words
offshore wind power/voltage source converter based high-voltage direct current(VSC-HVDC)/grid-connected planning/siting and sizing/onshore power grid引用本文复制引用
黄玲玲,薛禹,刘阳,卞雅婕,符杨..计及陆上电网外送能力影响的海上直流系统经济并网规划[J].电力系统自动化,2025,49(17):56-67,12.基金项目
国家自然科学基金资助项目(52177097) （52177097）
上海市教委自然科学重大项目(2021-01-07-00-07-E00122). This work is supported by National Natural Science Foundation of China(No.52177097)and Scientific Research and Innovation Program of Shanghai Education Commission(No.2021-01-07-00-07-E00122). （2021-01-07-00-07-E00122）
