Application of phasor measurements and partial energy analysis in stabilizing large disturbances

Journal Article · Wed Feb 01 04:00:00 EST 1995 · IEEE Transactions on Power Systems

DOI:https://doi.org/10.1109/59.373953· OSTI ID:49217

Stanton, S E ^[1]; Slivinsky, C ^[2]; Martin, K; Nordstrom, J ^[3]

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1. Stanton Engineering Services, Cascade, ID (United States)
2. Univ. of Missouri, Columbia, MO (United States). Electrical Engineering Dept.
3. Bonneville Power Administration, Portland, OR (United States)

Precise time-synchronized phasor measurements are available to us today from the Phasor Measurement Unit (PMU). One of the most promising uses of the PMU is for during-transient control applications. The work reported in this paper investigated the ability of synchronized Phase Angle Measurements to identify impending instabilities through real time measurements, and to trigger remedial actions in time to prevent major power system outages. At question was feasibility and how many additional Megawatts could be transferred when using the PMU to arm existing during-transient controllers. The Partial Energy Function is defined and explained symbolically in terms of Kimbark`s equal area criterion and power-angle diagrams. The four steps for accomplishing PMU based detection of instability are outlined. The approach is applied to instability conditions in Bonneville Power`s 500 kV transmission network West of Colstrip, MO. The effectiveness of the improved remedial action is demonstrated in terms of energy analysis and Kimbark diagrams and reported in terms of Megawatts of increased power transfer.

• OSTI ID: 49217
• Report Number(s): CONF-940110--
• Journal Information: IEEE Transactions on Power Systems, Journal Name: IEEE Transactions on Power Systems Journal Issue: 1 Vol. 10; ISSN ITPSEG; ISSN 0885-8950
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
ELECTRICAL TRANSIENTS
MEASURING METHODS
POWER SYSTEMS
STABILIZATION
SYSTEMS ANALYSIS