Out-of-step Protection combining Three-impedance Element Model with the Equal Area Criterion
Liang Yuan, Zhaorong Zhang, Chong Chen
Available Online January 2016.
- https://doi.org/10.2991/ifeea-15.2016.4How to use a DOI?
- three-impedance element model, equal area criterion, out-of-step protection, PSCAD simulation
- This paper proposes a new procedure for out-of-step protection through the combination of a three-impedance element model with equal area criterion. The curve of the system is transferred into curve and then curve is applied to forecast whether the oscillation between the generator and the power system is out-of-step or stable. The forecasting results determine the operation of the out-of-step protection: If the oscillation is unstable, the signals will be sent during the first period of unstable oscillation, and then the number of sliding pole will be counted to achieve a delay action. Otherwise, no response will be made. A three-machine infinite bus system has been used to test the proposed method by simulation with PSCAD software. The simulations test the protection in a variety of faults within the system, including unstable and stable oscillation, loss of excitation and short-circuit faults. Simulation results confirm that this method can work effectively as a backup protection when faults such as loss of excitation and short-circuit fault are not promptly removed. Moreover, the simulations provide a reliable basis for the scheme and design of out-of-step protection in the power plant.
- Open Access
- This is an open access article distributed under the CC BY-NC license.
Cite this article
TY - CONF AU - Liang Yuan AU - Zhaorong Zhang AU - Chong Chen PY - 2016/01 DA - 2016/01 TI - Out-of-step Protection combining Three-impedance Element Model with the Equal Area Criterion BT - 2015 2nd International Forum on Electrical Engineering and Automation (IFEEA 2015) PB - Atlantis Press SN - 2352-5401 UR - https://doi.org/10.2991/ifeea-15.2016.4 DO - https://doi.org/10.2991/ifeea-15.2016.4 ID - Yuan2016/01 ER -