Laboratory Performance Evaluation Report of SEL 421 Phasor Measurement Unit

Citations Over Time

Abstract

PNNL and BPA have been in close collaboration on laboratory performance evaluation of phasor measurement units for over ten years. A series of evaluation tests are designed to confirm accuracy and determine measurement performance under a variety of conditions that may be encountered in actual use. Ultimately the testing conducted should provide parameters that can be used to adjust all measurements to a standardized basis. These tests are performed with a standard relay test set using recorded files of precisely generated test signals. The test set provides test signals at a level and in a format suitable for input to a PMU that accurately reproduces the signals in both signal amplitude and timing. Test set outputs are checked to confirm the accuracy of the output signal. The recorded signals include both current and voltage waveforms and a digital timing track used to relate the PMU measured value with the test signal. Test signals include steady-state waveforms to test amplitude, phase, and frequency accuracy, modulated signals to determine measurement and rejection bands, and step tests to determine timing and response accuracy. Additional tests are included as necessary to fully describe the PMU operation. Testing is done with a BPA phasor data concentrator (PDC) which provides communication support and monitors data input for dropouts and data errors.

Related Papers

• → Observability analysis and measurement placement for systems with PMUs(2005)519 cited
• → Simulation of phasor measurement unit (PMU) in MATLAB(2015)23 cited
• → Power System Dynamic Performance Measured by Phasor Measurement Unit(2007)11 cited
• → A proposal for distributed architecture for synchronized phasor measurement unit(2011)2 cited
• → Multistage optimal placement of phasor measurement unit(2015)1 cited