BPA与DIgSILENT动态模型的比较与数据转换

Comparison and Data Conversion Between Dynamic Models of BPA and DIgSILENT

鉴于DIgSILENT中缺少大规模电力系统的暂态数据,难以进行暂态仿真分析,将BPA的暂态数据转换至DIgSILENT中是一种重要且有效的方法。详细比较了BPA和DIgSILENT两种商业软件中的机电暂态模型,实现发电机和负荷的模型匹配。利用Frame和Block的双层结构,在DIgSILENT中搭建了同步机控制系统框架和模型,实现同步机控制系统的模型匹配。利用DIgSILENT支持的Python语言编写暂态数据转换程序实现数据匹配。基于模型匹配和数据匹配实现大规模电力系统数据自动转换。IEEE 3机9节点系统和411机6 613节点华东电网系统的仿真计算结果验证了数据转换的准确性和实用性。

Converting the transient data of BPA to DIgSILENT is an effective method for lack of dynamic data in DIgSIELNT. This paper compares the electromechanical dynamic models of the two commercial simulation software to realize model matching of synchronous generators and loads. Building the frame and models of synchronous generator controllers based on the double layer structure of Frame and Block in DIgSILENT, realizing the matching of synchronous generator controllers. Data matching is achieved by a Python language based program that converts transient data, which is supported by DIgSILENT. Furthermore, the large-scale data is automatically converted from BPA to DIgSILENT based on model matching and data matching. The effectiveness of data conversion is verified by simulation results of an IEEE 3-machine 9-bus benchmark system, and the 411-machine 6 613-bus East China power grid.