A simple Matlab/Simulink model of balanced radial distribution systems and its application to find optimal penetration of active, reactive and complex power to minimize power losses

Kumar, M. Ravi; Satyanarayana, S.; Ganesh, V.

doi:10.1109/scopes.2016.7955578

Cited by 1 publication

(2 citation statements)

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“…The proposed voltage regulation aim is to alter the conventional OLTC operation and hence optimizes the voltage regulation process in the presence of embedded generators. Currently voltage regulation in the presence of embedded generators is mainly dependent on reactive power; however, reactive power is not fully effective in regulating the voltage magnitudes of medium voltage networks due to high R/X ratio . The system proposed will alter the existing conventional OLTC voltage regulation technique, instead of having one input from the substation busbar, the OLTC will have multiple real‐time measured inputs from various locations on the distribution network.…”

Section: Introductionmentioning

confidence: 99%

“…Currently voltage regulation in the presence of embedded generators is mainly dependent on reactive power; however, reactive power is not fully effective in regulating the voltage magnitudes of medium voltage networks due to high R/X ratio. 16,27 The system proposed will alter the existing conventional OLTC voltage regulation technique, instead of having one input from the substation busbar, the OLTC will have multiple real-time measured inputs from various locations on the distribution network. To prevent tap hunting, the algorithm will reduce active power generated by the embedded generator when the OLTC fails to keep defined voltage limits.…”

Section: Introductionmentioning

confidence: 99%

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Voltage regulation system for OLTC in distribution power systems with high penetration level of embedded generation

Hasan

Tshivhase

2019

Int Trans Electr Energ Syst

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Summary In this paper, a voltage regulation system is proposed that improves the voltage regulation process in power distribution networks with a high penetration of embedded generation. The principle of the proposed system is to alter the existing and conventional substation busbar monitoring technique of the on‐load tap changer (OLTC) commonly implemented in medium voltage power distribution networks. The system alternatively uses measured multiple voltage magnitudes on different vital locations on the power distribution network, it thereafter isolates the uppermost and the lowermost measured voltage magnitudes from all voltage inputs received. The sampled uppermost and lowermost voltage magnitudes are compared with predetermined set voltage limits, and the OLTC will change its tap settings to keep the uppermost and lowermost voltage magnitudes within the set voltage limits. To avoid tap hunting when set voltage limits cannot be maintained, the system will reduce the active power generated by the embedded generator to a predetermined value. On the other hand, the system will monitor the load on the feeder in which the embedded generator is connected and then increase the embedded generator active power generation again when the load start increasing. The proposed voltage regulation system was tested on a typical South African power distribution network consisting of a substation with an OLTC equipped power transformer that is simultaneously regulating voltage of three medium voltage feeders. The voltage regulation system managed successfully to keep feeder's voltages within the acceptable limits.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%