【摘要】 随着500 kV变电站的新增布点及增容扩建、机组的接入以及220 kV电网的日趋密集,220 kV电网短路电流越限问题日趋突出。为控制电网中短路电流的增长,可考虑在电网中加装串联电抗器。本文首先简要阐述了串联电抗器限制短路电流的原理。随后通过调研串联电抗器的生产制造能力和国内外电网中现有工程的运行现状,分析总结了串联电抗器在江苏电网应用中的优缺点。针对2019年~2023年规划中的南京江北电网,串联电抗器的应用有效地限制了电网中的短路电流,维持了电网的合环运行,提高了电网运行的可靠性。基于本文分析研究,在未来江苏电网中加装传统的串联电抗器技术是现阶段具有可行性的短路电流控制措施。更多还原

【Abstract】 With the increase and capacity upgrade of 500 kV substation,the connection of generation unit and ever dense of 220 kV power grid,the problem of short circuit current spillage of 220 kV grid becomes more and more prominent. In order to control the increase of short-circuit current in the grid,the addition of series reactors in the system can be considered. In this paper,the principles of series reactors to limit the short-circuit currents are briefly described. Then,the advantage and disadvantage on the application of series reactors in Jiangsu power grid is analyzed and summarized through studying the production ability of the serial reactors and operation status of reactors in the existing projects both at home and abroad. With the applications of series reactors in Nanjing Jiangbei power grid(JBPG) to be planned in the Year 2019-2023,application of series reactor limits effectively the short circuit in the grid,maintains close-loop operation of grid and improves operation reliability of the grid. On the basis of the analysis and study,installation of traditional series reactors in JBPG is the control measures of short circuit with feasibility at the present stage.更多还原