Optimal Capacitor Placement to Distribution Transformers for Power Loss Reduction in Radial Distribution Systems

Xu, Yan; Zhang, Dong; Wong, Kit Po; Liu, Evan; Yue, Benjamin

doi:10.1109/tpwrs.2013.2273502

Cited by 79 publications

(42 citation statements)

References 14 publications

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“…For example, in [13] the authors proposed reducing losses in distribution systems by using shunt capacitor banks coordinated with transformers. With them, they tried to minimize the reactive power and to increase the efficiency of the system by decreasing the losses generated in the power transformers.…”

Section: Networkmentioning

confidence: 99%

Evaluation of the Optimal Connection of Power Transformers in the Substations of a Hospital

et al. 2018

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Transformers are installed in power distribution systems to perform changes in supply voltage. Large consumers often have several transformers installed in parallel to ensure continuity of supply in the event of failure. These machines can achieve very high efficiency, but their efficiency is not constant since it depends on the power demanded at each time. Therefore, the level of efficiency that correspond to the operation of a specific transformer depends on two factors: machine technical characteristics and electrical load. In this work, the authors have proposed a methodology which shows the optimal number of transformers to be connected at each period in the substations of a large Spanish hospital, in order to achieve the maximum seasonal efficiency of these machines. The results of the energy saving are determined with respect to the current situation, in which all the transformers are permanently connected. On the other hand, the European Union has established a new regulation that sets the minimum energy efficiency requirements for new power transformers. This efficiency improvement is proposed to be applied gradually in two stages, a first limit came into force in 2015, while a more restrictive approach will appear in the year 2021. This work has also studied the potential energy savings that would occur when the substations of the hospital have more efficient transformers complying with the new European Regulation 548/2014.

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Section: Networkmentioning

confidence: 99%

Evaluation of the Optimal Connection of Power Transformers in the Substations of a Hospital

et al. 2018

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“…Since the distribution transformer loss occupies a larger share of power loss in distribution network, [13] chooses the low voltage side of distribution transformer as the location of capacitor. Then the compensation position and sizing with best benefit of loss reduction are the optimum by building a mixed integer programming model.…”

Section: Var Configuration Optimizationmentioning

confidence: 99%

A Review of Reactive Power Optimization in Distribution Network

Liu¹,

Liu²

2017

dtetr

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Abstract. The reactive power (VAR) optimization in distribution network is one of important measures for loss reduction, voltage profile improvement and power factor correction. This paper classifies the VAR optimization into VAR configuration optimization and VAR operation optimization based on different implementation phases. Meantime, the VAR optimal operation is sorted by static VAR optimization and dynamic VAR optimization. Afterward the article summarizes the research situation of VAR optimization. Eventually the paper presents the future work of VAR optimization according to the research status.

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“…While an OTL integrates into the power network and participates in carrying the power, there is inevitably some electric power loss [6][7][8][9][10]. The total network power loss, which is defined here as the energy consumption of operation (ECO), is largely dependent on the system operation mode rendering the load demand and power source allocation.…”

Section: Introductionmentioning

confidence: 99%

Estimating life-cycle energy payback ratio of overhead transmission line toward low carbon development

Dong

Chen

Zhang

et al. 2014

J. Mod. Power Syst. Clean Energy

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The energy conservation plays an important role for low carbon development. In order to evaluate the energy conservation in the full life-cycle, a scheme to estimate the energy consumption, or alternatively the energy pay, in constructing an overhead transmission line is proposed in this paper. The analysis of a typical projection is given for demonstration. With new additional overhead transmission lines, the energy consumption, known as the power loss in power network, is expected to be decline, which is defined in this paper as the energy payback. In order to estimate this kind of contribution, the scheme that consisted of load forecast, production simulation for generating systems, load flow simulation and power loss calculation has been proposed. Case studies, based on the IEEE 24-bus test system, are given to demonstrate the efficacy of the schemes. Moreover, several presumptive scenarios are deployed and analysed with the presented schemes for comparison.

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Optimal Capacitor Placement to Distribution Transformers for Power Loss Reduction in Radial Distribution Systems

Cited by 79 publications

References 14 publications

Evaluation of the Optimal Connection of Power Transformers in the Substations of a Hospital

Evaluation of the Optimal Connection of Power Transformers in the Substations of a Hospital

A Review of Reactive Power Optimization in Distribution Network

Estimating life-cycle energy payback ratio of overhead transmission line toward low carbon development

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