A New Blocking Scheme for Distance Protection during Power Swings
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Ahmad Farid Abidin
This paper presents a new and fast algorithm to prevent distance relay mal-operation during power swings. The algorithm blocks the relay tripping signals during power swing and unblocks the signals if a fault occurs during power swing. The proposed blocking scheme for distance protection incorporates an additional criterion into the conventional relay which is based on the derivative of the line reactive power as seen by the relay. This technique overcomes the shortcoming of conventional power swing detector (PSD) by removing the pre-defined R-X diagram. The conventional PSD has the difficulty in obtaining the timer setting at pre-defined R-X diagram due to varying cycle of power swings. To illustrate the effectiveness of the proposed algorithm, simulations were carried out on the IEEE 39 bus test system using the PSS/E software. Test results show the effectiveness of the proposed scheme in blocking the relay’s false trip signals during power swing.
©2011 Walter de Gruyter GmbH & Co. KG, Berlin/Boston
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Articles in the same Issue
- Article
- Design of New Load Balancers for Modern High Speed Railway Systems
- Alleviation of Network Overloads Using Concept of Virtual Flows
- Forecasting of Short-Term Electric Load Using Application of Wavelets with Feed-Forward Neural Networks
- Efficient Market Design and Public Goods, Part I: Economic Models
- Efficient Market Design and Public Goods, Part II: Theoretical Results
- Classification of Power Quality Disturbances Using Parzen Kernels
- Detection of Saturation and Reconstruction of the Secondary Current of a CT
- A New Blocking Scheme for Distance Protection during Power Swings
- Unit Commitment by Structure Based Solution and Efficient Lagrangian Relaxation
- Modeling Shaft Damping of Turbine-Generator in Electromagnetic Transient Simulation
