大规模新能源接入弱同步支撑直流送端电网的运行控制技术综述

发布时间：2018-03-20 22:25

本文选题：风力发电　切入点：光伏发电　出处：《电网技术》2017年10期 　论文类型：期刊论文

【摘要】：风电和光伏发电等新能源在近年来得到了大规模快速发展,大规模开发、集中式送出是中国新能源发展的主要特征之一。目前中国西北等地风光新能源基地普遍通过特高压直流输电系统送至远方负荷中心,直流送端附近配套火电机组少,系统频率调节和无功/电压支撑能力弱,振荡问题突出,已经形成或即将形成弱同步支撑直流送端电网系统,运行控制难度大。文章从系统频率调节、无功/电压控制、次同步振荡机理与抑制等3个方面对大规模新能源接入弱同步支撑直流送端电网的运行控制技术国内外研究现状进行综述,分析已有研究存在的问题,尝试给出了后续研究建议和展望。
[Abstract]:New energy sources, such as wind power and photovoltaic power generation, have been developed rapidly and on a large scale in recent years. Centralized output is one of the main features of new energy development in China. At present, new energy bases in northwest China are generally sent to remote load centers through UHV direct current transmission systems, and there are few supporting thermal power units near DC terminals. The frequency regulation and reactive power / voltage support ability of the system is weak, the oscillation problem is prominent, the weak synchronous support DC power supply network system has been formed or is about to be formed, and the operation control is very difficult. In this paper, the system frequency regulation, reactive power / voltage control, In this paper, the mechanism and suppression of sub-synchronous oscillation are reviewed, and the operation control technology of weakly synchronous supporting DC power network with large scale new energy is reviewed, and the existing problems are analyzed. Some suggestions and prospects for further study are given.
【作者单位】：新能源电力系统国家重点实验室(华北电力大学);新能源与储能运行控制国家重点实验室(中国电力科学研究院);甘肃省电力公司风电技术中心;
【基金】：国家重点研发计划项目(2016YFB0900100) 国家自然科学基金项目(51607160) 国家电网公司科技项目(大规模新能源接入弱同步支撑直流送端电网运行控制与保护技术研究)~~
【分类号】：TM732

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