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This paper presents a new approach for wide area dynamic monitoring of the system with many possible applications. One such application is discussed to provide real time stability controls. The new approach utilizes a substation based dynamic state estimation. The substation based dynamic state estimation uses data from relays, PMUs, meters, FDRs etc in the substation only thus avoiding all issues...
3-D surface visualizations of various power system operating quantities has always been challenging in terms of correctly capturing the changes of an arbitrary geographical shape power system. Triangulation methods offer promise for meaningful 3-D surface visualizations of such systems. In this paper we propose a scheme for such visualizations based on subdivision of triangle meshes. Input consists...
The supercalibrator concept was introduced based on a statistical estimation process that fits the GPS- synchronized measurements and all other available standard data into a three-phase, breaker-oriented, instrumentation inclusive model. In this approach, the asymmetries, unbalances and the instrumentation errors are taken into account in the state estimation procedure.The laboratory setup considered...
This paper presents an update and extensions of New York Power Authority's (NYPA) harmonic measurement system (HMS) which has been deployed for over a decade. The HMS consists of hardware and software, which determine the harmonic state of a transmission system, in real time, and stores the acquired data in a historical harmonics database. The HMS hardware consists of global positioning system (GPS)-synchronized...
Voltage instability may occur from a variety of phenomena. Two of the most frequent are: (a) voltage recovery following typical faults on a power system and (b) voltage collapse during transient swings of the power system. We propose approaches to deal with these phenomena consisting of identifying the phenomena involved and proper response of control devices in the system such as dynamic VAR sources...
A PC-based instrument for ground impedance measurements is presented. The instrument injects a transient electric current between the ground under measurement and an auxiliary ground, and it measures ground potential differences (GPDs) around the ground under measurement. The GPD measurements are processed with software which rejects external noise by the use of correlation methods. Estimation methods...
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