A Multi-Delay Self-Coherence Method for Detecting Sustained Oscillations Using PMU Data

doi:10.3969/j.issn.1000-7229.2017.09.011

Abstract

Abstract: ABSTRACT： Oscillations in power systems often herald stability problems and incur stability concerns. Therefore, it is important to detect oscillations at their early stages so that effective remedial actions can be taken in time. Previously, a self-coherence method was proposed to detect sustained oscillations using phasor measurement unit （PMU） data. This paper extends the self-coherence method by introducing multiple time-delay to improve the oscillation detection accuracy. Simulation data from a simple model and the 16-machine 68-bus model are generated and used to evaluate the performance of the proposed method. Using hypothesis testing, it is shown that the proposed multi-delay method can effectively increase the accuracy of oscillation detection.

Key words: bootstrap, self-coherence, phasor measurement unit （PMU）, oscillation

CLC Number:

TM 72

GHORBANIPARVAR Mohammadreza, ZHOU Ning . A Multi-Delay Self-Coherence Method for Detecting Sustained Oscillations Using PMU Data[J]. Electric Power Construction, 2017, 38(9): 73-.

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