标准算例系统是开展电力系统工程、科研、教育工作的重要工具。在我国坚持“集中式和分布式开发并举”的新能源发展战略背景下,提出一种分布式新能源高占比电网安全稳定标准算例具有重要意义。为此,该文首先介绍适用于大电网安全分析的分布式新能源仿真建模方法,从设备级模型和聚合等值模型两类颗粒度,总结构建多电压等级算例系统的参数等值方法。然后,面向大电网安全分析的宏观和局部场景,提出一种包含主网架和子网架两部分的算例系统。其中,主网架采用500 k V电压等级,可满足潮流计算、频率安全、电压安全等仿真需求,而子网架提供了颗粒度更小的拓扑数据,可以满足局部电网的电压安全深度分析。最后,以该系统为例,分别介绍所提标准算例系统在潮流计算、频率安全、电压安全等方面的应用。
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