TY - CONF
T1 - The amended standard C37.118.1a and its implications for frequency-tracking M-class phasor measurement units (PMUs)
AU - Roscoe, Andrew
AU - Dickerson, Bill
AU - Martin, Kenneth
N1 - This is a postprint of a paper submitted to and presented at the IEEE International workshop on Applied Measurements for Power
Systems (AMPS), 2014 [http://dx.doi.org/10.1109/AMPS.2014.6947702], and is subject to IEEE copyright
PY - 2014/9/24
Y1 - 2014/9/24
N2 - The new amendment to the Phasor Measurement Unit (PMU) standard C37.118.1a makes several significant changes, compared to the standard C37.118.1 (2011). This paper highlights some of the most important changes, with a particular emphasis applied to how those changes relate to the way that a frequency-tracking PMU (Phasor Measurement Unit) algorithm needs to be designed. In particular, there is a delicate trade-off between passband flatness (the bandwidth test) and stopband rejection in the Out-Of-Band (OOB) test. For a PMU algorithm using frequency-tracking and adaptive filters, it is shown that passband flatness can be relaxed to about 2.5dB, but that the stopband needs to begin up to 14.8% closer to 0 Hz than for a fixed-filter PMU. This is partly due to the exact procedures of the C37.118.1a “OOB” testing, and partly due to the adaptive nature of a frequency-tracking PMU filter section.
AB - The new amendment to the Phasor Measurement Unit (PMU) standard C37.118.1a makes several significant changes, compared to the standard C37.118.1 (2011). This paper highlights some of the most important changes, with a particular emphasis applied to how those changes relate to the way that a frequency-tracking PMU (Phasor Measurement Unit) algorithm needs to be designed. In particular, there is a delicate trade-off between passband flatness (the bandwidth test) and stopband rejection in the Out-Of-Band (OOB) test. For a PMU algorithm using frequency-tracking and adaptive filters, it is shown that passband flatness can be relaxed to about 2.5dB, but that the stopband needs to begin up to 14.8% closer to 0 Hz than for a fixed-filter PMU. This is partly due to the exact procedures of the C37.118.1a “OOB” testing, and partly due to the adaptive nature of a frequency-tracking PMU filter section.
KW - fourier transform
KW - phase estimation
KW - power system faults
KW - power system state estimation
UR - http://ieeexplore.ieee.org/xpl/articleDetails.jsp?tp=&arnumber=6947702
U2 - 10.1109/AMPS.2014.6947702
DO - 10.1109/AMPS.2014.6947702
M3 - Paper
T2 - IEEE Applied Measurements for Power Systems (AMPS 2014)
Y2 - 24 September 2014 through 26 September 2014
ER -