Electric energy accounting and power quality in electric networks with photovoltaic power stations

Волохин, Виталий Васильевич; Diahovchenko, Illia; Derevyanko, Bogdan

doi:10.1109/ysf.2017.8126588

Cited by 14 publications

(6 citation statements)

References 3 publications

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“…The simulation results show that the PV penetration level does not adversely influence the voltage profile of a typical distribution grid when the DERs capacity does not exceed 2.5 kW per household on average [5]. However, power generation by PV-panels and their connection to the network through current converters can negatively affect PQ [6]. The resonance phenomenon in the LV networks with a high number of distributed power inverters for PV-panels and the recommendations to improve the PQ characteristics of the inverters are discussed in [7].…”

Section: Undesired Impacts Of Voltage Variations and Voltage Control Strategiesmentioning

confidence: 96%

Influence of supply voltage and frequency variations on the electrical equipment and power consumption in LV and MV distribution networks

Diahovchenko¹,

Sushchenko²,

Shulumei³

et al. 2020

energetika

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This paper is focused on the analysis of supply voltage and frequency quality in low voltage and medium voltage distribution power systems. The influence of supply voltage and frequency variations, within the limits defined in the valid standards, on the power network’s parameters has been evaluated using the stochastic theory and the statistical analysis methods. The circuit of RLC-load was considered for numerical evaluation. The probability distribution of supply voltage and frequency was defined and the suggestions on optimum voltage and frequency quality parameters regarding electric energy consumption, power losses and electrical equipment lifespan were given.

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Section: Undesired Impacts Of Voltage Variations and Voltage Control Strategiesmentioning

confidence: 96%

Influence of supply voltage and frequency variations on the electrical equipment and power consumption in LV and MV distribution networks

Diahovchenko¹,

Sushchenko²,

Shulumei³

et al. 2020

energetika

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“…Therefore, electricity supplied to the network can be taken into account by the "green tariff " [16].…”

Section: Analysis Of the Influence Of Harmonic Pollution On Electric mentioning

confidence: 99%

Power quality issues in smart grids with photovoltaic power stations

Волохин¹,

Diahovchenko²

2018

energetika

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Problems of power quality and electric energy accounting often occur in networks with large pervasion of photovoltaic (PV) elements on rooftops of household and office buildings. In smart grids, including PV arrays electricity, which is sold back to the distribution network, requires approval of its parameters and quality control. Distributed power inverters generate higher harmonics which affect relay protection, automation systems, smart meters and power system's reliability. In this article the influence of photovoltaic elements on the accuracy of electric energy metering and power quality questions are analysed.

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“…If coordinated properly, the prosumers can bring significant benefits for PDSs in terms of reducing peak demand [8], lowering investment and operational costs and subtracting traditional energy sources with environmentally friendly RESs [9]. On the other hand an excessive penetration of DERs may invoke overvoltage and thermal overloading, cause power quality and system protection problems [10][11][12]. Therefore, attention to the prosumers management is on the agenda, and there are multiple research papers dedicated to the problems related to the increasing penetration of DERs.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, attention to the prosumers management is on the agenda, and there are multiple research papers dedicated to the problems related to the increasing penetration of DERs. Of particular interest are the problems of voltage and capacity constraints violation and of the power and energy losses minimization in such networks [12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Assessment of energy losses in power distribution systems with individual prosumers and energy communities

Diahovchenko

Petrichenko

2023

The Journal of Engineering

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Achieving the energy transition target will require the extensive engagement of consumers and the private sector in investment and operation of renewable-based power systems. Support of individual prosumers and proliferation of energy communities are efficient ways to implement this engagement. To facilitate smooth integration of prosumers with photovoltaic (PV) installations, while satisfying effective operation of the power distribution system (PDS), it is important to fundamentally assess energy losses for different grid development scenarios. In this paper, the energy losses are compared for two alternatives: (a) when prosumers with PV installations act as individual grid users, and (b) when prosumers become participants of a solar energy community. To achieve this goal, modeling of loads, prosumers' behavior and PV generation was performed. Furthermore, it has been analyzed how the physical topology of the distribution network can be harmonized with the underlying bidirectional power flows for each alternative, while complying with system constraints. The IEEE 123 Node Test Feeder was employed to capture the performance of the PDS and to estimate the energy loss with various penetration levels of prosumers. The results indicate that reduction of energy losses is only possible until a certain PV penetration level, after which additional PV capacities cause increase in energy losses and complicate the PDS's operation. Lower energy losses were supervised for the cases with dispersed PV generation, compared to the cases focused on energy communities. This means that the PDS demonstrates better tolerance to evenly distributed prosumers, rather than to single sources of a larger scale installed in one node. The outputs of this study will help the energy planners and utilities in improving performance of the PDS in terms of loss minimization and loadability maximization. JEL CLASSIFICATIONRenewable power engineering 1

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Electric energy accounting and power quality in electric networks with photovoltaic power stations

Cited by 14 publications

References 3 publications

Influence of supply voltage and frequency variations on the electrical equipment and power consumption in LV and MV distribution networks

Influence of supply voltage and frequency variations on the electrical equipment and power consumption in LV and MV distribution networks

Power quality issues in smart grids with photovoltaic power stations

Assessment of energy losses in power distribution systems with individual prosumers and energy communities

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