Magnetic field based Phasor Measurement Unit for power grid frequency monitoring

Traditionally, Phasor Measurement Units (PMUs) have utilized signals obtained from current transformers (CTs) to compute current phasors. Unfortunately, this requires that CTs must be directly connected with buses, transformers or power lines. This paper will introduce an innovative phasor measurement instrument, the Wireless Frequency Disturbance Recorder (Wireless FDR), which uses the magnetic field generated by power transmission lines to obtain current phasor measurements. The Wireless FDR is developed on the same hardware platform as the Frequency Disturbance Recorder (FDR), which is actually a single phase PMU. Prototype testing of the Wireless FDR in both the laboratory and the field environments were performed. Testing results show that measurement accuracy of the Wireless FDR satisfies the requirements for power system dynamics observation.

[1]  R. Conners,et al.  Practical issues in frequency disturbance recorder design for wide-area monitoring , 2005 .

[2]  G.T. Heydt,et al.  Innovative Sensory Concepts for Power Systems , 2006, 2006 38th North American Power Symposium.

[3]  Yilu Liu,et al.  Frequency Disturbance Recorder Design and Developments , 2007, 2007 IEEE Power Engineering Society General Meeting.

[4]  Stephen A. Sebo,et al.  Study of transmission line magnetic fields , 1990, Proceedings of the Twenty-Second Annual North American Power Symposium.

[5]  L. E. Zaffanella,et al.  Analysis of magnetic fields produced far from electrical power lines , 1991 .

[6]  A.G. Phadke,et al.  HISTORY AND APPLICATIONS OF PHASOR MEASUREMENTS , 2006, 2006 IEEE PES Power Systems Conference and Exposition.

[7]  Edward J. Powers,et al.  Time-frequency analysis of power system disturbance signals for power quality , 1999, 1999 IEEE Power Engineering Society Summer Meeting. Conference Proceedings (Cat. No.99CH36364).

[8]  J. Thorp,et al.  A New Measurement Technique for Tracking Voltage Phasors, Local System Frequency, and Rate of Change of Frequency , 1983, IEEE Transactions on Power Apparatus and Systems.

[9]  A.G. Phadke,et al.  Power system frequency monitoring network (FNET) implementation , 2005, IEEE Transactions on Power Systems.

[10]  Ling Chen,et al.  Internet based frequency monitoring network (FNET) , 2001, 2001 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.01CH37194).