Criteria of morphometric analysis of a daily load profile

Komenda, Taras; Komenda, Nataliya; Vagapov, Yuriy

doi:10.1002/2050-7038.2847

Cited by 2 publications

(3 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Electrical design engineers of Iraq DPGs aim to meet two objectives [2][3][4]: studying the current residential dwelling load profile characteristics [5][6][7][8][9][10][11] and model the electricity kW demand [12][13][14][15][16][17][18]. The common factor among residential dwellings, called the diversity factor ( ), is the backbone of electricity demand modeling.…”

Section: Introductionmentioning

confidence: 99%

A Novel Approach for Residential Neighborhoods’ Electricity Demand in Iraq Distribution Power Grids

et al. 2021

View full text Add to dashboard Cite

In Baghdad City's distribution power grid, a massive number of 630 kV distribution transformers (DTs) are used in residential neighborhoods. Each DT is joined to nine low-voltage 0.415 kV distribution feeders. Each feeder has a designated size of 1 × 240 mm 2 and is joined to a specified number of residential dwellings (= 30) fixed in the initial design stage. The size and number of low-voltage 0.415 kV distribution feeders are set with no change. In this investigation, we use a new approach for modeling electricity demand in residential neighborhoods in Baghdad City and overcome this constraint by finding the optimum number of residential dwellings joined to the same low-voltage 0.415 kV distribution feeder. Two sets of the experimental equations are created to compute the number of residential dwellings that are required to be joined to the low-voltage 0.415 kV distribution feeder. The multi-gradient particle swarm optimization algorithm is used as an optimization tool to handle these experimental equations. Results show that each low-voltage 0.415 kV distribution feeder can be loaded with 50 dwellings instead of 30 due to the diversity among residential dwellings. Several facts about the load profile characteristics of

show abstract

Section: Introductionmentioning

confidence: 99%

A Novel Approach for Residential Neighborhoods’ Electricity Demand in Iraq Distribution Power Grids

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Похибка по напрузі проявляється у деякому зменшенні вторинної напруги при навантаженні. Кутова похибка характеризується деяким кутом між векторами первинної та вторинної напруги [10][11][12].…”

unclassified

“…Чим вона більша, тим більше струми в обмотках. Пропорційно цим струмам збільшуються падіння напруги в обмотках [6,8,11,13].…”

unclassified

Electric power metering with its low quality

Gapon,

Gryb,

Karpaliuk

et al. 2021

Bull. Nat. Tech. Univ. "KhPI". Ser.: Energy: Reliab. Energy Eff

View full text Add to dashboard Cite

The issue of electricity metering with low quality is being considered. Special attention is paid to checking the connection metering scheme with low quality of electrical energy. It is shown that a specific circuit design can affect the accuracy of metering of electrical energy in case of poor quality of electrical energy. In distribution networks intended for power supply of industrial enterprises, reactive power is also active. If the consumer has compensating devices, the directions of active and reactive power can be opposite. It is noted that current transformers, selected taking into account the short-circuit current or the characteristics of relay protection, do not provide metering accuracy due to the increased transformation ratio, forcing the installation of an additional set of current transformers or transferring the meters to another point in the network. Thus, the current transformation ratio of the current transformer is somewhat different from the nominal one, and the secondary current vector forms a certain angle with the primary current vector. The voltage error is manifested in a slight decrease in the secondary voltage under load. The angular error is characterized by a certain angle between the vectors of the primary and secondary stress. The value of the errors depends on the load power of the transformer. The maximum allowable voltage drop of the transformer determines the accuracy class. A rated power is set for each accuracy class. Thus, the voltage transformer, depending on the load, can operate in different accuracy classes. Changing the accuracy classes leads to errors in the measurements of metering devices and requires appropriate correction. The article reveals the reasons for the occurrence of such errors, which makes it possible to develop methods and, as a consequence, create devices to prevent the described errors of metering devices.

show abstract

Criteria of morphometric analysis of a daily load profile

Cited by 2 publications

References 20 publications

A Novel Approach for Residential Neighborhoods’ Electricity Demand in Iraq Distribution Power Grids

A Novel Approach for Residential Neighborhoods’ Electricity Demand in Iraq Distribution Power Grids

Electric power metering with its low quality

Contact Info

Product

Resources

About