Recording requirements for simulation and analysis of wide area disturbances

The simulation and analysis of wide area disturbances in large electric power systems are very critical to the optimal design and operation of the system. This paper discusses the requirements and describes a Web-based architecture for wide area disturbance recording. The primary recording devices are specialized monitoring and recording devices, while the backup recording is provided by the protection IEDs and the substation level of the substation automation system. The distribution of recording modes between these three components of the distributed recording system is described. The communications architecture of a Web-based distributed system for wide area disturbance recording is presented later in the paper.