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Utilization of a mixture of CTs and current sensors in line differential protection applications
The popularity of Rogowski sensors is increasing due to their advantages over conventional CTs. Consequently, network utilities may sometimes end up facing a question whether it would be possible to use line differential ...
Voltage and current THD in microgrid with different DG unit and load configurations
After microgrid transition from the normal operation to the islanded operation the system impedance changes considerably and it affects on the harmonic voltages of the microgrid. In this paper the voltage ...
Novel protection approach for MV microgrid
The amount of distributed generation (DG) connected to medium voltage (MV) networks is expected to increase continuously. This trend creates a good opportunity to use MV feeders as microgrids. Normally ...
Active network management scheme for reactive power control
In the future new options to provide needed technical ancillary services locally and system-wide by distributed energy resources (DER) are needed. One ancillary service which DER could provide is the reactive power management ...
Fault type and location detection in islanded microgrid with different control methods based converters
In this paper the fault type and location detection in an islanded low voltage (LV) distribution network based microgrid with converters applying different control methods is studied. In the ...
Advanced islanding detection in grid interactive microgrids
In the future active network management and protectionsolutions have to enable utilization of intended islandoperation as well as active control and utilizationflexibilities during normal and islanded operation ofgrid ...
Alternative solutions for advanced security of supply
(International Conference and Exhibition on Electricity Distribution CIRED, 2019-06-01)
The restrictions regarding the maximal length of outages especially under major storms has resulted in massive underground cabling projects in the network companies in Finland and Sweden. Due to these expensive investments ...