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Conference Paper

Small-Signal Stability Analysis of Delayed Power System Stabilizers

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Bokharaie, V., Sipahi, R., & Milano, F. (2014). Small-Signal Stability Analysis of Delayed Power System Stabilizers. In Power Systems Computation Conference (PSCC 2014) (pp. 1-7).

Cite as: https://hdl.handle.net/21.11116/0000-0001-2D49-C
This paper presents a stability analysis of power system stabilizers (PSS) for synchronous generators with inclusion of time delays. The paper shows that a time delay in the PSS feedback loop can improve the small-signal stability of a power system if the regulator gain is properly tuned. The paper provides a proof-of-principle analysis based on the classical model of the synchronous machine as well as a case study based on a detailed transient model of the IEEE 14-bus test system. The paper also provides a discussion on the practical implications that the properties of delayed PSS can have on the control of synchronous machines and of the whole power system.