强直弱交的定义、内涵与形式及其应对措施

发布时间：2018-11-15 16:39

【摘要】：交直流混联电网中,交流与直流既相互支撑,同时也相互耦合交互作用,2者结构发展的均衡态势,将会深刻影响电网运行特性。当前,我国电网已基本形成特高压交直流混联新格局,电力工程界与学术界对其呈现出的新特性取得广泛共识,并高度概括为"强直弱交"特性。然而,目前尚缺乏对强直弱交的系统性论述。为此,在回顾交直流电网发展历程的基础上,提出了强直弱交的定义,剖析并阐释了其内涵,指明强直弱交的主要表现形式及其对电网安全稳定运行的威胁。在此基础上,为保障强直弱交型混联电网安全运行,从稳定标准修编完善、交直流混联电网协调发展以及构建大电网安全综合防御体系等3个方面,提出了应对措施的建议。
[Abstract]:In AC / DC hybrid power system, AC and DC support each other and also interact with each other. The balanced situation of the structure development of AC / DC will deeply affect the operation characteristics of the grid. At present, the UHV AC / DC hybrid new pattern has been basically formed in China's power network. The new characteristics presented by the power engineering and academic circles have been widely agreed, and are highly generalized as the "strong and weak AC" characteristics. However, at present, there is still a lack of a systematic discussion of the strong and weak cross. On the basis of reviewing the development course of AC / DC power network, this paper puts forward the definition of strong and weak AC, analyzes and explains its connotation, and points out the main manifestation of strong and weak AC and its threat to the safe and stable operation of power network. On this basis, in order to ensure the safe operation of the strong and weak AC hybrid grid, the countermeasures are put forward from three aspects: the stability standard revision and perfection, the coordinated development of the AC / DC hybrid power network and the construction of the security comprehensive defense system of the large power network.
【作者单位】：电网安全与节能国家重点实验室(中国电力科学研究院);
【基金】：国家电网公司科技项目(XT71-16-053,XT71-16-044)~~
【分类号】：TM721.3

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