加装同步调相机对多直流馈入受端电网的影响分析

发布时间：2018-01-27 15:11

本文关键词： 同步调相机多直流馈入受端电网电压稳定换相失败短路电流　出处：《电力系统保护与控制》2017年22期 　论文类型：期刊论文

【摘要】：随着直流的大规模馈入,受端电网运行特性发生显著变化,大量本地机组关停,导致动态无功储备和电压支撑不足问题凸显,电网承受扰动能力下降,因此迫切要求配置同步调相机等动态无功补偿装置。通过仿真软件对电网加装调相机前后的电压稳定裕度、引起直流换相失败的交流故障范围及短路电流水平进行仿真计算和比较分析,全面评估了多直流馈入受端电网中时加装调相机后对系统运行的影响。该研究为同步调相机布点配置和参数选取提供有效参考和依据,有助于推进多直流馈入大受端电网时同步调相机配置工作的开展。
[Abstract]:With the large-scale DC feed, the operating characteristics of the receiving end power network changes significantly, and a large number of local units shut down, resulting in the dynamic reactive power reserve and insufficient voltage support problems highlighted, and the ability of the power grid to withstand disturbances is reduced. Therefore, it is urgent to configure dynamic reactive power compensator such as synchronous camera. The voltage stability margin before and after the installation of the camera is simulated by the simulation software. The range of AC fault and the level of short-circuit current which cause DC commutation failure are simulated and compared. In this paper, the effect of installing the camera on the system operation is comprehensively evaluated. The research provides an effective reference and basis for the location of the synchronous camera and the selection of the parameters. It is helpful to advance the configuration of synchronous camera when multi-DC feed into large receiving network.
【作者单位】：国网上海市电力公司电力科学研究院;国家电网华东分部;
【基金】：国家电网公司科技项目(52094016000X)“直流控制保护与受端电网配合性能提升技术研究”
【分类号】：TM721.1
【正文快照】： 近几年,随着大容量和远距离特高压交直流输电技术的发展,大比例受电地区的集中出现,电网特性发生较大变化。1)直流馈入降低了系统动态无功储备。因直流的大规模馈入,且本身不提供动态无功支撑,受端电网电源增速明显放缓,部分已投产电源因系统调峰能力不足还需调停,系统动态无

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