| As a universally popular integrated power system simulation software tool, DIgSILENT has not been put into practical use in dispatch department’s high level applications in China, mainly due to lack of grid models data in DIgSILENT format. Currently when we adopt DIgSILENT for simulation, we need to manually set up the actual grid models and fill in the models’s parameters, which is time-consuming and also can cause human error.The existing SCADA system can output online grid models which are described by E language. E language is a data model descriptive language for the power system developed by National Electric Power Dispatching and Communication Center. It has been widely used in power system because of its simplicity and efficiency. Therefore, it has an important practical significance for converting online grid models in E text into DIgSILENT grid model.This paper’s main work and achievements are as followings:(1) Based on IEEE9 node, this paper studies the data content and format of grid device models, topology models and graph models in DGS interface file of DIgSILENT. A test is conducted to verify the feasibility of using DGS interface to import the entire grid models.(2) This paper comprehensively compares and analyses the online grid models in E text and the grid models in DGS interface file, proposes an approach to the automatic generation of grid graphic data in DGS format based on topology data, and designs a process of converting online grid models in E text into grid models in DGS interface file.(3) According to the actual functional requirements, this paper designs an overall framework of model transformation module and develops the corresponding software, and uses IEEE9 node example and an actual grid example to verify the validity and accuracy of the model transformation methods.The content and achievement of this paper will play a guiding role in promoting the application of DIgSILENT for online operation analysis and offline rapid prototyping. |
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