Customer voltage sensitivity analysis to facilitate reliability and PV hosting capacity in LV networks

Kisuule, Mikka; Hernando‐Gil, Ignacio; Ndawula, Mike Brian; Gu, Chenghong

doi:10.1049/icp.2023.0014

Cited by 1 publication

(7 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The proposed methodology involves the assessment of the reliability of the power distribution system considering different PV penetration levels and locations along an LV feeder. The reliability assessment is based on the extent to which voltages at all buses remain within the regulator-set voltage limits (typically +10%/−6% in UK and Europe) as in [1]. Firstly, an MCS is carried out to establish the well-known reliability indicators of the System Average Interruption Frequency Index (SAIFI), System Average Interruption Duration Index (SAIDI), and Energy Not Supplied (ENS).…”

Section: Methodsmentioning

confidence: 99%

“…Conversely, the negative impacts of PV such as overvoltage are accentuated in lightly loaded networks. A load flow algorithm as in [1] is used to ascertain the voltages at each of the buses along the main feeder when different PV capacities are placed at the beginning, middle, and end of the feeder. The voltages are then evaluated to determine the reliability impact on the network as an entire system and at each bus as well as the hosting capacity of the feeder, from a voltage perspective.…”

Section: Imentioning

confidence: 99%

“…Therefore, the proposed indices quantify the frequency and duration of these interruptions to derive the customer-wise risk of supply disconnection and the overall system-wide reliability. This approach differs from the conventional reliability assessment, which looks at sustained interruptions to customers caused by failure of network components, and thus lacks a more detailed analysis of power quality by looking at (voltage-related) transient events [1].…”

Section: Voltage-based Reliability Assessmentmentioning

confidence: 99%

“…To cope with the upcoming low-carbon electricity systems, it is imperative to increase the portfolio of flexibility sources cost-effectively and sustainably [1][2][3][4]. The increased penetration of residential distributed energy resources (DER) within the last mile of the power supply network, such as rooftop photovoltaic (PV) systems and batteries [5], is posing many challenges and opportunities to distribution companies and third-party aggregators [6].…”

Section: Introductionmentioning

confidence: 99%

“…Building on the work conducted in [1], this paper offers a new risk and reliability perspective to the conventional voltage analyses (i.e., in [16,33]) performed on distribution LV feeders, presenting the following main contributions and innovations:…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

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

Kisuule

Ndawula²,

et al. 2023

Energies

View full text Add to dashboard Cite

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.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Imentioning

confidence: 99%

Section: Voltage-based Reliability Assessmentmentioning

confidence: 99%