高电压技术2017，Vol.43Issue(4)：1121-1128,8.DOI:10.13336/j.1003-6520.hve.20170328008
新能源多馈入直流并网与传统交流并网对比
Contrasting Analysis on Multi-infeed VSC and AC Grid-connection of New Energy
摘要
Abstract
With the development of large-scale new energy,many regional energy bases appear,the traditional AC connected grid has small capacity,high loss,and great influence in the regional AC systems,VSC-HVDC is economic and stable,and can save the power transmission channel,large regional energy base paralleled in grids with multi-infeed VSC,then transmits electricity by LCC channel,and can solve the above problems.Firstly,we discussed the feasibility of multi-infeed DC grid-connection,compared the AC/DC transmission technology,and evaluated the engineering application of the price.Then,we designed the topology of multi-infeed VSC grid and traditional AC grid,and calculated the system parameters of two systems.Finally,we used the DIgSILENT software to model and simulate,analyzed static characteristic of two grid-connected systems under normal working condition,and compared their transient characteristics by the fault disturbance of wind farm.Simulation results can determine the superiority of multi-infeed DC integration of new energy,and the topology can restrain the fluctuation of new energy,increased consumption of new energy,and reduce dependence of AC power network for traditional LCC-HVDC.关键词
多馈入直流电网/交流并网/电压稳定性/新能源/VSC/经济性评估Key words
multi-infeed DC power system/AC grid-connected/voltage stability/new energy/VSC/economic evaluation引用本文复制引用
张新燕,赵理威,赵理飞,尹勋,赵昂,刘博文..新能源多馈入直流并网与传统交流并网对比[J].高电压技术,2017,43(4):1121-1128,8.基金项目
国家自然科学基金(51367015) （51367015）
新疆维吾尔自治区科技支疆项目(201491112).Project supported by National Natural Science Foundation of China (51367015),Xinjiang Uygur Autonomous Region Xinjiang Branch of Science and Technology Project(201491112). （201491112）
