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Identifying Oscillation-Vulnerable Buses Using Impedance-Based Reflection Coefficient
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DOI：10.1049/ell2.70615.png)
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Abstract
En 中文
In this paper, a novel method is proposed to identify oscillation-vulnerable buses by applying the Barkhausen criterion to an impedance-based reflection-coefficient analysis in power systems. The proposed approach computes the magnitude and phase of the reflection coefficient from the relationship between the Thevenin impedance of the system seen from a bus and the load impedance and analyses variations in the reflection-coefficient phase under changes in operating conditions. The effectiveness of the proposed method is validated through simulations on the IEEE standard test systems, namely the IEEE 39-bus and IEEE 118-bus systems. It is also confirmed that buses exhibiting abrupt changes in the reflection-coefficient phase with respect to operating-point variations may become vulnerable to oscillations according to the Barkhausen criterion.
Keywords:
power system stability
power system control
oscillations
electric impedance
power control
power electronics
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0.8
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304
Citations:
1.2W
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