Power system damping estimation from wide area measurements

Al-Ashwal, Natheer; French, Kieran; Hung, William; Crossley, P.A.

doi:10.1049/cp.2010.0258

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2020

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“…A relevant approach where the generators presenting the smallest damping contribution are considered as the oscillation source is proposed in [10]. To identify the source, the algorithm tries to find two opposing groups among voltage phase angles, and the leading phase angle in the leading group is considered as the oscillation source.…”

Section: Introductionmentioning

confidence: 99%

Locating Generators Causing Forced Oscillations Based on System Identification Techniques

Duong

D’Arco

2020

2020 IEEE PES Innovative Smart Grid Technologies Europe (ISGT-Europe)

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This paper presents a method to locate the source of forced oscillations in power grids caused by maloperation of turbine-governor systems. The transfer function between the grid frequency and the output active power is first estimated for each generator in normal operation condition. The turbinegovernor acting as the source of the forced oscillations is then detected by identifying rather large mismatches between the predicted output of its estimated transfer function and actual measurements from the grid. The proposed approach can locate both single and concurrent sources of forced oscillations. The method requires synchronized measurements of the grid frequency and the active power of the generator, preferably from PMU measurements. Results from simulations of the Nordic 44 grid model, which emulates the Nordic power system, demonstrate the validity of the proposed method.

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Section: Introductionmentioning

confidence: 99%