Abstract
Due to the presence of Distribution Generation (DG), power system becomes more complicated and stability of power is the main challenging task. Saturation of Current Transformer (CT) imposes great dilemma on differential relaying scheme. This manuscript presents a new differential algorithm for distribution transformer protection which adaptively set its characteristic in the event of CT saturation. The proposed scheme is capable to detect magnetizing inrush condition, high resistance internal fault and discriminate external fault with CT saturation. The validation of the proposed scheme is done by simulating a part of the power system in PSCADTM software and programming in MATLAB software. A Full Cycle Discrete Fourier Transform (FCDFT) is implemented to validate the differential protective scheme for 15 MVA, 66/11 kV distribution transformer. An adaptive concept of the differential characteristic is employed in the algorithm to maintain the stability of relay during external fault with CT saturation. Validation and authenticity of the proposed technique are carried out with various test condition generated under wide variation in system parameters. The result on 2 kVA, 230/110 V, single phase transformer shows that the proposed scheme is capable to discriminate inrush, internal and external fault also with CT saturation conditions.
Acknowledgements
This work is financially sponsored by Department of Science and Technology (SERB-India) under project's reference no. EMR/2016/006041. We also acknowledge TEQIP-2, SVNIT, Surat for providing resource support.
References
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© 2018 Walter de Gruyter GmbH, Berlin/Boston
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Artikel in diesem Heft
- Research Article
- Simulation of Modified Flyback Snubber Circuit for Isolated Bidirectional DC-DC Converter
- Design of Cost Effective Solar PV Powered SRM Driven Agriculture Pump Using Modified Buck-Boost Converter
- High Step-Up Boost Converter with Neural Network Based MPPT Controller for a PEMFC Power Source Used in Vehicular Applications
- A Novel Non-Linear Control for Three-Phase Five-Level Cascaded H-Bridge Inverter Based Shunt Active Power Filter
- Operation of Direct Power Control Scheme in Grid-Connected Mode Using Improved Sliding Mode Observer and Controller
- Enhancement of Power Quality in Wind Based Distributed Generation System Using Adaptive Vectorial Filter
- Intelligence Scheme for Fault Location in a Combined Overhead Transmission Line & Underground Cable
- Adaptive Algorithm for Distribution Transformer Protection to Improve Smart Grid Stability
- LQR Based Control Method for Grid Connected and Islanded DG System
- Charging Coordination of Plug-In Electric Vehicle for Congestion Management in Distribution System
- A Unique Concept of Limited Grid Capacity and Voltage-Frequency Control of an RES Based Rural Electrification System
- Multi-Objective based Optimal Generation Scheduling Considering Wind and Solar Energy Systems
- New Selective Harmonic Elimination-Pulse-Width Modulation for Cascaded H-bridge Multilevel Inverters
- Novel PWM Control with Modified PSO-MPPT Algorithm for Reduced Switch MLI Based Standalone PV System
- Reduced Switch Technique for Solar PV System Based Multilevel Inverter for PQ Improvement
- Phase Locked Loop Based Techniques for Compensation of Voltage Based Power Quality Issues in Distribution System
- A Comparative Study of PWM Techniques for Multiphase Induction Motor Drives