Coordination of the Time Overcurrent Relay Protection Settings in Medium Voltage Electric Power Grids

2020 ◽  
Author(s):  
Mediha Mehmed-Hamza ◽  
Plamen Stanchev
Keyword(s):  
Electric Power ◽  
Relay Protection ◽  
Power Grids ◽  
Medium Voltage ◽  
Overcurrent Relay ◽  
Electric Power Grids

scholarly journals A demand-response method to balance electric power-grids via HVAC systems using active energy-storage: Simulation and on-site experiment

2021 ◽  
Vol 7 ◽  
pp. 762-777
Author(s):  
Qinglong Meng ◽  
Yang Li ◽  
Xiaoxiao Ren ◽  
Chengyan Xiong ◽  
Wenqiang Wang ◽  
...  
Keyword(s):  
Energy Storage ◽  
Electric Power ◽  
Demand Response ◽  
Hvac Systems ◽  
Power Grids ◽  
Electric Power Grids ◽  
Response Method

Reduced-Order Transfer Matrices From RLC Network Descriptor Models of Electric Power Grids

2011 ◽  
Vol 26 (4) ◽  
pp. 1905-1916 ◽  
Author(s):  
Francisco Damasceno Freitas ◽  
Nelson Martins ◽  
Sergio Luis Varricchio ◽  
Joost Rommes ◽  
Franklin C. Veliz
Keyword(s):  
Electric Power ◽  
Power Grids ◽  
Transfer Matrices ◽  
Reduced Order ◽  
Electric Power Grids

scholarly journals Investigation of the Effects of the Arc Fault Resistance and Transient Resistance on the Overcurrent Ground Relay Protection Setting in Medium Voltage Electrical Power Lines

2020 ◽  
Vol 4 (1) ◽  
pp. 67-72
Author(s):  
Plamen Antonov Stanchev ◽  
Mediha Enver Mehmed-Hamza
Keyword(s):  
Power Transformer ◽  
Electrical Power ◽  
Relay Protection ◽  
Power Grids ◽  
Power Lines ◽  
Medium Voltage ◽  
Fault Resistance ◽  
Ground Fault ◽  
Determining Factors ◽  
Transient Voltages

In the medium voltage electrical power lines, the most common fault is the phase to ground fault. The determining factors for selection of the neutral grounding mode of the medium voltage electrical power lines are the selectivity of the relay protection, the transient voltages during phase to ground fault, the magnitude of the fault currents, etc. The paper studies the influence of the transient resistance of phase to ground fault on the selectivity and sensitivity of the earth fault protection when the neutral of the power transformer is grounded through active resistance in medium voltage power grids.

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