高比例新能源渗透组网的系统稳定性研究

Research on System Stability of High Proportion New Energy Penetration Network

【目的】目前新型电力系统建设过程中存在多起重大电网事故,新型电力系统发展过程中所面临的稳定性问题尤为突出。通过分析新型电力系统的暂态特性,为提高新型电力系统稳定性提供建议。【方法】以某新能源富集区作为研究对象,通过对传统电网与新型电力系统的供电方式进行分析,研究其电网暂态稳定性的特性差异,探讨储能电站在新型电力系统中所起到的作用。【结果】系统分析结果表明,新能源装机占比越高,系统暂态稳定性越差;当新能源占比超过50%时,系统无法稳定运行,储能电站介入后,可以在很大程度上解决系统的暂态稳定性问题。【结论】储能电站是解决新型电力系统稳定性问题的一个可行方案且具有重大意义。

[Purposes]Currently,there are multiple major power grid accidents in the construction pro⁃cess of the new power system,and the stability issues faced by the development of the new power system are particularly prominent.By analyzing the transient characteristics of the new power system,sugges⁃tions are provided for improving the stability of the new power system.[Methods]Taking a new energy enrichment area as the research object,this paper analyzes the traditional power grid power supply mode and the new power system power supply mode separately,and studies the transient stability characteris⁃tics of its power grid and explore the role that energy storage stations can play in new power systems.[Findings]The results of the transient stability analysis of the system show:the higher the proportion of new energy installed,the worse the transient stability of the system.When the proportion of new energy exceeds 50%,the system cannot operate stably.After energy storage intervention,the transient stability problem of the system can be greatly solved.[Conclusions]As a solution to the stability problem of the new power system,energy storage power stations are feasible and of great significance.