An Optimal Thevenin Equivalent Estimation Method and its Application to the Voltage Stability Analysis of a Wind Hub
| Autor: | Stephen M. Burchett, Dmitry Kosterev, Anthony Faris, Joe H. Chow, Gordon Matthews, Maximilian Liehr, Eric Heredia, Daniel J. Douglas, Scott G. Ghiocel |
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| Rok vydání: | 2018 |
| Předmět: |
Distribution board
Computer science 020209 energy Reactance Energy Engineering and Power Technology 02 engineering and technology Voltage collapse Transmission system Electrical connection Electric power system Control theory 0202 electrical engineering electronic engineering information engineering Maximum power transfer theorem Point (geometry) Electrical and Electronic Engineering Thévenin's theorem Voltage |
| Zdroj: | 2018 IEEE Power & Energy Society General Meeting (PESGM). |
| DOI: | 10.1109/pesgm.2018.8586212 |
| Popis: | A simplified voltage stability analysis method is to use a static Thevenin equivalent to represent the electrical connection to a load center. Assuming fixed values of the Thevenin voltage and reactance, a power-voltage ( $PV$ ) curve analysis can be performed to find the voltage collapse point and stability margin. This paper proposes a method to compute the static Thevenin equivalent voltage and reactance of a power system using measured data. The method is validated with simulated PMU data and with 24-hour SCADA data at a wind hub on a medium voltage transmission system in the US western system. For the wind hub, the Thevenin equivalent parameters are used to compute the maximum power transfer capability of the wind hub as constrained by voltage stability. Then the method is extended to online application by using short data windows and forgetting factors. |
| Databáze: | OpenAIRE |
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