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Calibration of reduced dynamic models of power systems using phasor measurement unit (PMU) Data

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4 Author(s)
Ning Zhou ; Pacific Northwest Nat. Lab., Richland, WA, USA ; Shuai Lu ; Singh, R. ; Elizondo, M.A.

Accuracy of a power system dynamic model is essential to the secure and efficient operation of the system. Lower confidence on model accuracy usually leads to conservative operation and lowers asset usage. To improve model accuracy, identification algorithms have been developed to calibrate parameters of individual components using measurement data from staged tests. To facilitate online dynamic studies for large power system interconnections, this paper proposes a model reduction and calibration approach using phasor measurement unit (PMU) data. First, a model reduction method is used to reduce the number of dynamic components. Then, a calibration algorithm is developed to estimate parameters of the reduced model. This approach will help to maintain an accurate dynamic model suitable for online dynamic studies. The performance of the proposed method is verified through simulation studies.

Published in:

North American Power Symposium (NAPS), 2011

Date of Conference:

4-6 Aug. 2011