Wide Area Inter-Area Oscillation Monitoring Using Fast Nonlinear Estimation Algorithm

Abstract

This paper presents the results of the development of Smart Grid transmission network applications in the Great Britain (GB) power system. A new Wide Area Monitoring System (WAMS) application for monitoring inter-area oscillations is developed. The core of this novel application is a fast nonlinear algorithm for the real-time estimation of the dominant inter-area oscillation mode, which processes GPS synchronized information obtained from Phasor Measurement Units (PMUs) installed in the power system. It is based on the Newton-Type Algorithm (NTA), an efficient parameter estimator. The paper focuses on the practical application of the new WAMS application: two data sets were tested, one based on computer simulations and the other based on real-life data records. The computer simulated oscillatory signals were obtained through dynamic simulations of the full GB power system model consisting of over 200 generators. The real-life data records used information collected by the FlexNet Wide Area Monitoring System (FlexNET-WAMS) installed in the GB network. Based on these data records, the features of inter-area oscillations in the GB network are drawn. Index Terms-Inter-area oscillations, Newton type algorithm, nonlinear parameter estimation, wide area monitoring systems. 1949-3053 © 2013 IEEE

Smart frequency control in low inertia energy systems based on frequency response techniques: A review

“…Also, the rotating inertia can be emulated in grid-connected inverters, thus the rotating inertia is enhanced to ensure power system safety [161]. Thirdly, communication systems, currently used in a number of applications related to monitoring, control and protection [162][163][164], have a great prospect for improving the operation of modern power systems. Moreover, the load frequency control based on the sampled-data control is implemented to reduce the communication burden [165].…”