Allocation of synchronous condensers for restoration of system short-circuit power
Allocation of synchronous condensers for restoration of system short-circuit power
复制标题
系统短路功率恢复的同步调相机配置
DOI：
10.1007/s40565-017-0346-4
复制
发表时间：
2018
影响因子：
6.3
通讯作者：
Peter Weinreich
中科院分区：
文献类型：
--
作者：
Emanuel Marrazi;Guangya Yang;Peter Weinreich
现代电力系统采用越来越多的基于转换器的可再生能源 (RES) 并减少传统发电厂的使用，从而降低了短路功率和转动惯量水平。解决这个问题的方法是在电网中使用同步调相机，以提供足够的短路功率。这导致作为可再生能源发电互连点 (POI) 的输电系统母线的短路比 (SCR) 增加。同步调相机所需容量和电网位置的评估本质上是一个混合整数非线性优化问题，考虑到每种类型的机器和所有母线，无法在手动基础上完成。因此，本研究提出了一种在由可再生能源发电供电的输电系统的假设未来场景中同步调相机的优化分配方法。系统中同步冷凝器安装的总成本被最小化，并且中央可再生发电厂 POI 的 SCR 得到加强。该方法具有在更大网格上应用的潜力，有助于可再生能源的网格整合。
Modern power systems, employing an increasing number of converter-based renewable energy sources (RES) and decreasing the usage of conventional power plants, are leading to lower levels of short-circuit power and rotational inertia. A solution to this is the employment of synchronous condensers in the grid, in order to provide sufficient short-circuit power. This results in the increase of the short-circuit ratio (SCR) at transmission system bus-bars serving as points of interconnection (POI) to renewable generation. Evaluation of the required capacity and grid-location of the synchronous condensers, is inherently a mixed integer nonlinear optimization problem, which could not be done on manual basis considering each type of machine and all bus-bars. This study therefore proposes a method of optimal allocation of synchronous condensers in a hypothetic future scenario of a transmission system fed by renewable generation. Total cost of synchronous condenser installations in the system is minimized and the SCRs at the POIs of central renewable power plants are strengthened. The method has potential for application on larger grids, aiding grid-integration of RES.