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| Content Provider | IET Digital Library |
|---|---|
| Author | Zanjani, Mohsen Ghalei Monfared Mazlumi, Kazem Kamwa, Innocent |
| Abstract | This study proposes a new application of micro-phasor measurement units (µPMUs) for adaptive coordination of overcurrent relays in microgrids. Mis-coordination of overcurrent relays usually arising from the variation of relays fault current and it can cause damage to equipment of network and raise operating costs. Fault current injection and direction to microgrid are highly dependent on network uncertainties; therefore, fault current is affected by line and power plant outages. This study proposes an algorithm to detect these uncertainties in online operation. Then, microgrid overcurrent relays coordination is optimised again. Uncertainties are line and power plant outages in transmission network and microgrid side and two distinct methods are used for each. For online detection of uncertainties in the transmission side, it is assumed that a µPMU is installed between transmission network and microgrid point of common coupling; so, the topology changes such as line outage is detected by monitoring of Thevenin impedance estimation that is obtained by µPMU measurements. Uncertainties detection in a microgrid is done by signals that are sent by µPMUs and installed all over the microgrid. All data are gathered and analysed in phasor data concentrators and then overcurrent relays coordination is updated with such changes. |
| Starting Page | 4061 |
| Ending Page | 4068 |
| Page Count | 8 |
| ISSN | 17518687 |
| Volume Number | 12 |
| e-ISSN | 17518695 |
| Issue Number | Issue 18, Oct (2018) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-gtd/12/18 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2018.5898 |
| Journal | IET Generation, Transmission & Distribution |
| Publisher Date | 2018-08-13 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Adaptive Overcurrent Relay Protection Data Analysis DigSILENT Software Package Distributed Power Generation Fault Current Fault Current Injection IEEE 9-bus System Line Outages MATLAB Software Package Microgrid Overcurrent Relay Coordination Microgrid Point-of-common Coupling Microphasor Measurement Units Network Uncertainties Online Uncertainty Detection Operating Cost Optimisation Technique Overcurrent Protection Particle Swarm Optimisation Particle Swarm Optimisation Algorithm Phasor Data Concentrators Phasor Measurement Power Generation Fault Power Generation Protection Power Generation Reliability Power Plant Outages Power System Measurement And Metering Power System Protection Power Transmission Fault Power Transmission Protection Power Transmission Reliability Relay Fault Current Relay Protection Reliability Thevenin Impedance Estimation Transmission Network ΜPMU |
| Content Type | Text |
| Resource Type | Article |
| Subject | Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering |
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