Smart Application of Energy Management Systems for Distribution Network Reliability Enhancement

Ndawula, Mike Brian; Zhao, Pengfei; Hernando‐Gil, Ignacio

doi:10.1109/eeeic.2018.8494478

Cited by 4 publications

(8 citation statements)

References 13 publications

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“…Design and implementation of these smart grid technologies and functionalities, denoted in the further text as "smart interventions", are described in detail in the next section. The replicability and flexibility of this methodology is thoroughly justified in published work by the authors, e.g., in [2,4,9,24,29,30], where the same core technique is applied to different ranges of high-to-low voltage network configurations, load subsectors, and different type and penetration of DERs. indices (e.g., ENS index).…”

Section: Reliability Assessment Methodologymentioning

confidence: 99%

“…Figure 9b shows the power output: positive values indicate discharging while negative values correspond to charging. System operation assumptions include no charge-discharge losses, no occurrence of unexpected failures (no failure rate), and ES apparatus is not damaged by large upstream network faults [9].…”

Section: Es System Configurationmentioning

confidence: 99%

“…This paper builds on the previous work published in [4] and [9], where the impact from the implementation of ES, renewable-based MG systems and DSR on actively managed distribution networks was analysed. The analysis in this paper acknowledges that solar PV power production is strongly impacted by unpredictable cloud movements and thus presents PV models that can evaluate related temporal and spatial variations to correctly quantify potential benefits.…”

Section: Introductionmentioning

confidence: 97%

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Reliability Enhancement in Power Networks under Uncertainty from Distributed Energy Resources

2019

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This paper presents an integrated approach for assessing the impact that distributed energy resources (DERs), including intermittent photovoltaic (PV) generation, might have on the reliability performance of power networks. A test distribution system, based on a typical urban MV and LV networks in the UK, is modelled and used to investigate potential benefits of the local renewable generation, demand-manageable loads and coordinated energy storage. The conventional Monte Carlo method is modified to include time-variation of electricity demand profiles and failure rates of network components. Additionally, a theoretical interruption model is employed to assess more accurately the moment in time when interruptions to electricity customers are likely to occur. Accordingly, the impact of the spatio-temporal variation of DERs on reliability performance is quantified in terms of the effect of network outages. The potential benefits from smart grid functionalities are assessed through both system- and customer-oriented reliability indices, with special attention to energy not supplied to customers, as well as frequency and duration of supply interruptions. The paper also discusses deployment of an intelligent energy management system to control local energy generation-storage-demand resources that can resolve uncertainties in renewable-based generation and ensure highly reliable and continuous supply to all connected customers.

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Section: Reliability Assessment Methodologymentioning

confidence: 99%

Section: Es System Configurationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%

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Reliability Enhancement in Power Networks under Uncertainty from Distributed Energy Resources

2019

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“…Accordingly, one of the objectives of this paper is to combine the impact of the frequency and duration of momentary and sustained interruptions, such as the methodology proposed in [20] where a single reliability metric gathers different classes of outages, at the same time, their frequency and duration, and thus the effective time of each interruption experienced by a customer can be established. These reliability results can be compared to a probabilistic methodology based on a Monte-Carlo Simulation of component failure rates and repair times as done in [21,22].…”

Section: Introductionmentioning

confidence: 99%

“…While high PV penetration limits (up to 90% in [12]) can be tolerated in LV networks without voltage violations, the voltage rise depends on the location and size of the PV systems along the feeder. For example, the formation of LV microgrids in general, with PV technologies in particular, may have a substantial impact on the reliability of the distribution system, however, they might create a great complexity in the computation for the system's reliability evaluation [22]. In this regard, one of the PV contributions might be to provide alternative supply and hence improve the reliability of customer loads during some of the network interruptions.…”

Section: Introductionmentioning

confidence: 99%

PV Hosting Capacity in LV Networks by Combining Customer Voltage Sensitivity and Reliability Analysis

Kisuule

Ndawula²,

et al. 2023

Energies

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This paper investigates voltage regulation in low voltage (LV) networks under different loading conditions of a supply network, with increased levels of distributed generation, and in particular with a diverse range of locational solar photovoltaic (PV) penetration. This topic has been researched extensively, with beneficial impacts expected up to a certain point when reverse power flows begin to negatively impact customers connected to the distribution system. In this paper, a voltage-based approach that utilizes novel voltage-based reliability indices is proposed to analyse the risk and reliability of the LV supply feeder, as well as its PV hosting capacity. The proposed indices are directly comparable to results from a probabilistic reliability assessment. The operation of the network is simulated for different PV scenarios to investigate the impacts of increased PV penetration, the location of PV on the feeder, and loading conditions of the MV supply network on the reliability results. It can be seen that all reliability indices improve with increased PV penetration levels when the supply network is heavily loaded and conversely deteriorate when the supply network is lightly loaded. Moreover, bus voltages improve when an on-load tap changer is fitted at the secondary trans-former which leads to better reliability performance as the occurrence and duration of low voltage violations are reduced in all PV scenarios. The approach in this paper is opposed to the conventional reliability assessment, which considers sustained interruptions to customers caused by failure of network components, and thus contributes to a comprehensive analysis of quality of service by considering transient events (i.e., voltage related) in the LV distribution network.

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Evaluation of Customer-oriented Power Supply Risk with Distributed PV-Storage Energy Systems

Ndawula

Paola

Hernando‐Gil

2019

2019 IEEE Milan PowerTech

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HAL is a multidisciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

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Smart Application of Energy Management Systems for Distribution Network Reliability Enhancement

Cited by 4 publications

References 13 publications

Reliability Enhancement in Power Networks under Uncertainty from Distributed Energy Resources

Reliability Enhancement in Power Networks under Uncertainty from Distributed Energy Resources

PV Hosting Capacity in LV Networks by Combining Customer Voltage Sensitivity and Reliability Analysis

Evaluation of Customer-oriented Power Supply Risk with Distributed PV-Storage Energy Systems

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