Abstract
The creation of a suitable wide area monitoring system (WAMS) is widely recognized as an essential aspect of delivering a power system that will be secure, efficient and sustainable for the foreseeable future. In Great Britain (GB), the deployment of the first WAMS to monitor the entire power system in real time was the responsibility of the visualization of real time system dynamics using enhanced monitoring (VISOR) project. The core scope of the VISOR project is to deploy this WAMS and demonstrate how WAMS applications can in the near term provide system operators and planners with clear, actionable information. This paper presents the wider scope of the VISOR project and the GB wide WAMS that has been deployed. Furthermore, the paper describes some of the WAMS applications that have been deployed and provides examples of the measurement device performance issues that have been encountered during the project.
Highlights
Wide area monitoring systems (WAMSs) represent the future of power system monitoring [1, 2] and several recent reports on wide area blackouts have stated that they may contribute to limiting the likelihood and severity of similar blackouts in the future [3, 4].CrossCheck date: 12 June 2016Received: 23 March 2016 / Accepted: June 2016 / Published online: July 2016 Ó The Author(s) 2016
The trial of this device forms a key aspect of VISOR, as it can provide visibility of subsynchronous oscillations that cannot be accurately reported by 50 Hz phasor measurement units (PMUs), which are limited to 25 Hz by the Nyquist limit and to around 10–20 Hz by the length of window used for ensuring robust phasor calculation
For the most part the existing assets that were to be incorporated into the VISOR WAMS were PMUs and some of the issues encountered during this assessment included: poor GPS reception, incorrect CT/VT wiring, and poor performance of communication links
Summary
Wide area monitoring systems (WAMSs) represent the future of power system monitoring [1, 2] and several recent reports on wide area blackouts have stated that they may contribute to limiting the likelihood and severity of similar blackouts in the future [3, 4]. A WAMS enables the real-time monitoring of power system dynamics by bringing together new developments in the fields of measurement, communication and computing [5]. Advances in the computing resources available to power system engineers have enabled the development of a wide range of new algorithms that process WAMS data online to support the operation of power systems. Examples of these online WAMS applications include the real time estimation of oscillation parameters (e.g. inter area oscillations), the dynamic rating of transmission lines, and hybrid and linear state estimation.
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