A Generalised Fault Protection Structure Proposed for Uni-grounded Low-Voltage AC Microgrids
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Duong Minh Bui
,
Shi-Lin Chen
Abstract
This paper presents three main configurations of uni-grounded low-voltage AC microgrids. Transient situations of a uni-grounded low-voltage (LV) AC microgrid (MG) are simulated through various fault tests and operation transition tests between grid-connected and islanded modes. Based on transient simulation results, available fault protection methods are proposed for main and back-up protection of a uni-grounded AC microgrid. In addition, concept of a generalised fault protection structure of uni-grounded LVAC MGs is mentioned in the paper. As a result, main contributions of the paper are: (i) definition of different uni-grounded LVAC MG configurations; (ii) analysing transient responses of a uni-grounded LVAC microgrid through line-to-line faults, line-to-ground faults, three-phase faults and a microgrid operation transition test, (iii) proposing available fault protection methods for uni-grounded microgrids, such as: non-directional or directional overcurrent protection, under/over voltage protection, differential current protection, voltage-restrained overcurrent protection, and other fault protection principles not based on phase currents and voltages (e.g. total harmonic distortion detection of currents and voltages, using sequence components of current and voltage, 3I0 or 3V0 components), and (iv) developing a generalised fault protection structure with six individual protection zones to be suitable for different uni-grounded AC MG configurations.
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©2016 by De Gruyter
Articles in the same Issue
- Frontmatter
- Research Articles
- A Generalised Fault Protection Structure Proposed for Uni-grounded Low-Voltage AC Microgrids
- Simulation Test System of Non-Contact D-dot Voltage Transformer
- Development of V2G and G2V Power Profiles and Their Implications on Grid Under Varying Equilibrium of Aggregated Electric Vehicles
- Coordinated Action of Fast and Slow Reserves for Optimal Sequential and Dynamic Emergency Reserve Activation
- DG Planning with Amalgamation of Operational and Reliability Considerations
- The Optimized Operation of Gas Turbine Combined Heat and Power Units Oriented for the Grid-Connected Control
- Improved Differential Evolution for Combined Heat and Power Economic Dispatch
- Mitigation of Power Quality Problems in Grid-Interactive Distributed Generation System
- Optimal Operation and Management for Smart Grid Subsumed High Penetration of Renewable Energy, Electric Vehicle, and Battery Energy Storage System
- Techniques for a Wind Energy System Integration with an Islanded Microgrid
- Transmission Loss Calculation using A and B Loss Coefficients in Dynamic Economic Dispatch Problem
Articles in the same Issue
- Frontmatter
- Research Articles
- A Generalised Fault Protection Structure Proposed for Uni-grounded Low-Voltage AC Microgrids
- Simulation Test System of Non-Contact D-dot Voltage Transformer
- Development of V2G and G2V Power Profiles and Their Implications on Grid Under Varying Equilibrium of Aggregated Electric Vehicles
- Coordinated Action of Fast and Slow Reserves for Optimal Sequential and Dynamic Emergency Reserve Activation
- DG Planning with Amalgamation of Operational and Reliability Considerations
- The Optimized Operation of Gas Turbine Combined Heat and Power Units Oriented for the Grid-Connected Control
- Improved Differential Evolution for Combined Heat and Power Economic Dispatch
- Mitigation of Power Quality Problems in Grid-Interactive Distributed Generation System
- Optimal Operation and Management for Smart Grid Subsumed High Penetration of Renewable Energy, Electric Vehicle, and Battery Energy Storage System
- Techniques for a Wind Energy System Integration with an Islanded Microgrid
- Transmission Loss Calculation using A and B Loss Coefficients in Dynamic Economic Dispatch Problem
