Structural Analysis of Power Losses in (6-10 / 0.4 kV) Urban Distribution Electric Networks of the City of Dushanbe, the Republic of Tajikistan

Chorshanbiev, Sirojiddin R.; Shvedov, Galaktion V.; Sultan, Hamdy M.; Nazirov, Khurshed B.; Ismoilov, Firdavs O.

doi:10.1109/eiconrus.2019.8657231

Cited by 12 publications

(2 citation statements)

References 2 publications

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“…They interconnect electrical networks with different voltage levels, transferring electrical energy from generation centers (large power transformers) to consumption points (distribution transformers), and their use is growing due to the strong demand for energy in today's societies. However, in their operation, these machines waste energy in the core and windings [1,2], which reached worldwide values of 1181 TWh in 2020 and could be higher than 1845 TWh in 2040 according to estimates provided by the organization United for Efficiency (U4E) [2], patronized by the United Nations. These energy losses raise the temperature of the transformers and cause the following adverse effects:…”

Section: Introductionmentioning

confidence: 99%

Load Losses and Short-Circuit Resistances of Distribution Transformers According to IEEE Standard C57.110

León-Martínez,

Peñalvo-López,

Andrada-Monrós

et al. 2023

Inventions

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Load losses determine transformers’ efficiency and life, which are limited by overheating and deterioration of their elements. Since these losses can be characterized by short-circuit resistances, in this article, we have developed expressions for the short-circuit resistances of three-phase transformers according to IEEE Standard C57.110. Imposing the condition that these resistances must cause load losses of the transformer, two types of short-circuit resistance have been established: (1) the effective resistance of each phase (Rcc,z) and (2) the effective short-circuit resistance of the transformer (Rcc,ef). The first is closely related to the power loss distribution within the transformer. The second is just a mathematical parameter. Applying these resistances to the 630 kVA oil-immersed distribution transformer of a residential network, we have concluded that both types of resistances determine the total load losses of the transformer. However, only Rcc,z accurately provides the load losses in each phase. Rcc,ef can give rise to errors more significant than 16% in calculating these losses, depending on imbalances in the harmonic currents.

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Section: Introductionmentioning

confidence: 99%

Load Losses and Short-Circuit Resistances of Distribution Transformers According to IEEE Standard C57.110

León-Martínez,

Peñalvo-López,

Andrada-Monrós

et al. 2023

Inventions

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“…The power systems are feeding by the different modes of generation as solar, wind, hydel and other alternative energies [4]- [7]. However, it has now become one of the concerns for ensuring organizations' financial stability [8]- [11]. In order to improve transmission efficiency and energy distribution, the intelligent network should be capable of self-diagnosis and self-healing and contain cutting-edge sensor, communication, numerical relays and control technology [12].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of additional electricity losses in electric networks using a meter

Kakhramon Rakhimovich,

Saleem,

Ilkhombek Khosiljonovich

et al. 2023

IJEECS

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In this article, additional electricity losses are calculated using the voltage imbalance factor. There is also a method for predicting extra losses in the case of longitudinal and transverse asymmetry, as well as information on how to measure power quality indicators. It is suggested that home appliances be used to monitor a separate power system's power quality indicators. The findings of investigations on the condition of asymmetry conducted in operational low voltage electrical networks are presented, along with an illustration of how to calculate additional electricity losses in low-voltage networks. In this article for this purpose, the author developed a Malika device, which is fully capable to measure, store, analyze, and draw conclusions from the results of all electrical quality indicators.

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Application of energy efficiency indicators in electric power distribution tariff-setting

Shvedova

2020

J. Phys.: Conf. Ser.

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To increase the energy efficiency of the Russian economics it is necessary to incentivize the reduction of consumption of energy resources by different organizations including Distribution Network Operators. The existing system of regulation of electricity distribution tariffs in the Russian Federation contains incentives for Distribution Network Operators to reduce only their electricity losses. The paper develops a method of calculating energy efficiency indicators for Distribution Network Operators and an approach to accounting these indicators in electric power distribution tariffs in case of setting tariffs using benchmarks or using the method of long-term indexation of the total required revenue. The advantage of the method suggested in the article compared to energy efficiency incentives used in different European countries and the US consists in the fact that it does not complicate tariff-setting procedures and does not require significant investments, increasing transaction costs or extensive amendments to existing legislation.

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Structural Analysis of Power Losses in (6-10 / 0.4 kV) Urban Distribution Electric Networks of the City of Dushanbe, the Republic of Tajikistan

Cited by 12 publications

References 2 publications

Load Losses and Short-Circuit Resistances of Distribution Transformers According to IEEE Standard C57.110

Load Losses and Short-Circuit Resistances of Distribution Transformers According to IEEE Standard C57.110

Evaluation of additional electricity losses in electric networks using a meter

Application of energy efficiency indicators in electric power distribution tariff-setting

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