Power system security and stability is very important to national economy and people's life,so it has been paid great attention by governments and power utilities.In order to avoid huge economic losses caused by l...Power system security and stability is very important to national economy and people's life,so it has been paid great attention by governments and power utilities.In order to avoid huge economic losses caused by large-scale blackouts,State Grid Corporation of China(SGCC)have invested sufficient human and financial resources to carry out related researches,and remarkable achievements have been achieved.However,large grid stability problem is very complex,it is still difficult to completely avoid the blackouts.展开更多
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...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。展开更多
文摘Power system security and stability is very important to national economy and people's life,so it has been paid great attention by governments and power utilities.In order to avoid huge economic losses caused by large-scale blackouts,State Grid Corporation of China(SGCC)have invested sufficient human and financial resources to carry out related researches,and remarkable achievements have been achieved.However,large grid stability problem is very complex,it is still difficult to completely avoid the blackouts.
文摘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。
