Impact of Distributed Generation on the Protection System in Tunisian Distribution Network

Meddeb, Asma; Sahbeni, Nesrine; Jmii, Hajer; Chebbi, Souad

doi:10.1109/ssd.2018.8570584

Cited by 11 publications

(6 citation statements)

References 14 publications

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“…This formula may be used to calculate the value of the plug setting: 𝑃𝑆 > %&'() * +,, -. /(01' (1) In Figure 3, IDMT curves are used when the amount of time which should pass at given current, before initiating an action, usually the tripping of a circuit breaker. When the PS is changed, the relay characteristics in Figure 3…”

Section: Plug Setting (Ps)mentioning

confidence: 99%

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Overcurrent Relay for Generation Distribution Utilization

Anuar

Idris

2022

Elektrika

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Distributed Generation (DG) is the production of electricity from a variety of renewable energy sources that is closer to the customer and load. The addition of distributed generation sources to the distribution networks alters the characteristics of distribution system and has an influence on its protection coordination. Relay protection plays a critical function in protecting a power system from various problems. Relay protection coordination reduces relay operating time and avoids relay failure. As a result, a fault analysis of the distribution network with and without distributed generation installation is required to determine the effects of installing DG at the radial system on overcurrent relay protection. The software programmed ETAP version 19.0 was used to represent an actual distribution system in this research paper. The consequences on the overcurrent protection relay were discovered as a result of the analysis. Simultaneously, the presence of an overcurrent relay following the installation of DG may no longer be dependable. As a result, it is critical to assess the effects of DG installation in order to verify that the protective zone can be properly protected.

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Section: Plug Setting (Ps)mentioning

confidence: 99%

“…Short circuit levels escalate to the point that the selectivity of the relay is impaired when the DG units are connected to the distribution system, resulting in miss-operations. [1].…”

Section: Introductionmentioning

confidence: 99%

Overcurrent Relay for Generation Distribution Utilization

Anuar

Idris

2022

Elektrika

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“…However, their results are not valid in changing network conditions. Authors in [6] simulated the Tunisian distribution network using directional relays and changing coordination settings on ETAP. Directional over current relays were used for correct tripping and to ensure time grading between primary and backup relay and the settings of over current relays were revised.…”

Section: Literature Reviewmentioning

confidence: 99%

Investigation of the Effects of Distributed Generation on Protection Coordination in a Power System

Tariq

Khatri

Haque

et al. 2021

Eng. Technol. Appl. Sci. Res.

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The rapid increase of the electrical power demand gave rise to many challenging situations for power system control engineers as the transmission lines are operating at their maximum capacity in most developing economies. To solve this, Distributed Generation (DG), i.e. the generation of electrical power in a distribution network that provides clean energy, is gaining popularity. There are several challenges the protection of distribution networks faces after DG installation, such as variations in short circuit levels, protection blinding, reverse power flow, protection coordination, change in fault impedance, recloser-fuse coordination, selectivity, unsynchronized reclosing, false tripping, etc. In this paper, an IEEE 13-Bus System Radial Distribution System is simulated using Electrical Transient Analyzer Program (ETAP), various scenarios of DG placement are considered, their impact on the protection system is analyzed, and different techniques are proposed to minimize the effect on protection coordination. The use of directional relays, current limiting reactors, and small magnitude DGs is tested and analyzed. The way this effect varies by changing the location of DG is also analyzed.

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“…There is no universal definition for HC, but the literature generally suggest that it is the maximum amount of DG that maintains a satisfactory operation of a distribution network (Estorque & Pedrasa, 2016;Athari, Wang & Eylas, 2017;Jain et al, 2019;Azibek et al, 2020). Like the impacts of DG, a distribution network's HC depends on numerous factors, including load profiles, generation profiles, the concentration of DG, network configuration, voltage levels, network characteristics, and climatic conditions, especially for weather-dependent DG such as solar PV and wind (Chiradeja, 2005;Fasina, Hassan & Cipcigan, 2015;Aziz & Ketjoy, 2017;Meddeb et al, 2018;Celvakumaran, Ramachandaramurthy & Ekanayake, 2019). If properly understood, the concept of HC has the potential to help DNO make informed decisions when processing DG interconnection requests, reduce the risk of disrupting the normal operating conditions of distribution networks, enhance the utilisation of the current infrastructures, and avoid costly network upgrades (Al-Saadi, Zivanovic & Al-Sarawi, 2017;Athari, Wang & Eylas, 2017;Ismael et al, 2020).…”

Section: Hosting Capacity Definitionmentioning

confidence: 99%

Design and application of a distributed generation hosting capacity algorithm

Sam

Oyedokun

Akpeji

2021

J. energy South. Afr.

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Distribution networks in Southern Africa and elsewhere are witnessing an unprecedented growth of consumer-side distributed generation (DG) courtesy of governmental interventions to maximise the utilisation of renewable energy resources through low-carbon grid-edge technologies. To deal with the increasing adoption of consumer-side DG, distribution network operators need to conduct technical studies to foster an understanding of the benefits and impacts of DG and the hosting capacity (HC) of existing distribution networks. This will aid the implementation of measures to manage grid exports. Using a distribution network in Namibia as a case study, this paper presents an algorithm for assessing the HC of consumer-side DG in existing distribution networks that are situated in areas anticipating high and uniform uptake of DG. The algorithm is a hybrid of deterministic and probabilistic methods. The uniqueness of the algorithm is the concept of calculating monthly HC. The algorithm was tested on a real existing residential distribution network and the results confirmed that HC varies monthly. However, the practical implementation of monthly HC requires upgrades to existing inverter technology, which currently contains a single export limit functionality. This opens the possibility to drive innovation in the inverter technology to develop a date-based multiple export limit functionality.

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Impact of Distributed Generation on the Protection System in Tunisian Distribution Network

Cited by 11 publications

References 14 publications

Overcurrent Relay for Generation Distribution Utilization

Overcurrent Relay for Generation Distribution Utilization

Investigation of the Effects of Distributed Generation on Protection Coordination in a Power System

Design and application of a distributed generation hosting capacity algorithm

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