Optimal Generation Scheduling Approach Applied to the Transmission Grid of Uganda for Enhanced Performance and Cost Reduction

Oweka, David; Edimu, Milton; Serugunda, Jonathan; Okou, Richard

doi:10.1109/powercon48463.2020.9230699

Cited by 2 publications

(1 citation statement)

References 26 publications

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“…Next, in the Digsilent software, draw a line diagram and enter the parameters required for the simulation. If all of the parameters are entered correctly, the protection system is simulated numerous times until the required analysis is completed [14], [15]. The simulation process begins with the design of a simulation circuit of the Braga Transformer 1 Substation line diagram, then the data is input according to the calculation data and data obtained in the field and then set up on each device such as transformer 1 which has the task of supplying loads to each repeater after the setting process is complete, the simulation results are implemented into a characteristic curve.…”

Section: Simulation Softwarementioning

confidence: 99%

Overcurrent and ground fault relay protection settings at tranformator-1 150kV/20kV Braga substation

Rusiana Iskandar,

Mulyono,

Charisma

et al. 2023

JITEL

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The occurrence of a malfunction at the substation results in power outages and losses in the electrical energy distribution system to consumers. Many tests are carried out to see the performance of the protection system, including the parameters of the over current relay (OCR) and ground fault relay (GFR) in the electrical energy distribution system. This research aims to analyze OCR and GFR values, analyze OCR setting, drop-off, and pick-up values, and analyze OCR time characteristics using DigSilent Power Factory 15.1 software based on existing equipment specification data at the Braga substation. The results show an OCR accuracy level of around 94% on the 20 kV and 150 kV sides. Meanwhile, 92.39% on the 20 kV GFR side and 94.87% on the 150 kV side. The setting value for the pick-up current is 0.92 A on the 20 kV side of the GFR and the drop-off current is 0.85 A on the 150 kV side with a pick-up current of 0.39 A and a drop-up current of 0.37 A. Setting a value on the 20kV side is greater than on the 150 kV side due to the difference in current transformer ratio values. The simulation results show that the OCR and GFR characteristic curves on both sides meet the criteria for a protection system with good performance.

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Section: Simulation Softwarementioning

confidence: 99%