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Aaron St. Leger
Advisor: Chika Nwankpa, Ph.D.
Abstract:
The need for real-time assessment tools for analysis of the power system is ever increasing with deregulation and the resulting centralized control of the power system by independent system operators (ISOs). System analysis done in real-time based on measured system data is referred to as online power system analysis. The focus of this research is to utilize analog computation for online power system assessment. Currently ISO's make use of digital computation tools for online state estimation, parameter estimation and security assessment. The current tools are very expensive and have many limitations and shortcomings which drive continued research in this field. More specifically, due to the tremendous computational burden, simplifications of system models are required and the number of analyses conducted in real time is extremely limited. The research proposed here is to utilize analog computation for online power system assessment.
Analog computation has a tremendous speed advantage over digital methods due to the inherent parallelism. Historically analog computers were limited to offline studies due to lengthy programming, calibration and data acquisition times. The Center for Electric Power Engineering (CEPE) at Drexel University has developed a new analog power system emulator which has overcome many of these limitations and is more suitable as an online tool. Programming, calibration and data acquisition is automated via a digital computer and a hardware interface to the controllable analog hardware. The focal point of this research will be to develop the analog computation theory for online power system assessment. Due to the nature of the analog computation, traditional state estimation and other analyses do not directly translate. This research will formulate observability theory for the analog emulator based on real-time power system measurements. This theory will help to provide an analog tool which provided analogous information as a digital state estimator. With this information the analog emulator can then be used for other online analysis such as security assessment for the present state of the system.
Tuesday, June 12th at 2:30 p.m.
Bossone 303
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