scholarly journals Optimal Routing an Ungrounded Electrical Distribution System Based on Heuristic Method with Micro Grids Integration

2019 ◽  
Vol 11 (6) ◽  
pp. 1607 ◽  
Author(s):  
Wilson Pavón ◽  
Esteban Inga ◽  
Silvio Simani
Keyword(s):  
Distribution System ◽  
Low Voltage ◽  
Voltage Drop ◽  
Distribution Network ◽  
Heuristic Method ◽  
Network Routing ◽  
Electrical Network ◽  
Optimal Routing ◽  
Electrical Distribution ◽  
Electrical Distribution Network

This paper proposes a three-layer model to find the optimal routing of an underground electrical distribution system, employing the PRIM algorithm as a graph search heuristic. In the algorithm, the first layer handles transformer allocation and medium voltage network routing, the second layer deploys the low voltage network routing and transformer sizing, while the third presents a method to allocate distributed energy resources in an electric distribution system. The proposed algorithm routes an electrical distribution network in a georeferenced area, taking into account the characteristics of the terrain, such as streets or intersections, and scenarios without squared streets. Moreover, the algorithm copes with scalability characteristics, allowing the addition of loads with time. The model analysis discovers that the algorithm reaches a node connectivity of 100%, satisfies the planned distance constraints, and accomplishes the optimal solution of underground routing in a distribution electrical network applied in a georeferenced area. Simulating the electrical distribution network tests that the voltage drop is less than 2% in the farthest node.

scholarly journals Resilience Modeling of Flood Induced Electrical Distribution Network Failures: Munich, Germany

2021 ◽  
Vol 9 ◽  
Author(s):  
Jorge Leandro ◽  
Shane Cunneff ◽  
Lorenz Viernstein
Keyword(s):  
Low Voltage ◽  
Distribution Network ◽  
Heavy Precipitation ◽  
Electrical Network ◽  
Voltage Transformer ◽  
Medium Voltage ◽  
Electrical Distribution ◽  
Electrical Distribution Network ◽  
Flooding Events ◽  
Severe Flooding

Of many defining characteristics for a flood resilient city and its infrastructure networks, mitigating flooding impacts and recovering quickly to a pre-flood state are to be considered of high importance. With a likely increase in the frequency and intensity of future heavy precipitation and flooding events in Europe, the vulnerability of the electrical distribution network of Maxvorstadt, Munich will also increase. These facts justify the need for quantifying how the electrical distribution network would respond to flooding, and more so, how stakeholders can better prepare for such an event. For a synthetic electrical distribution network of Maxvorstadt, the timing and location of network components failure due to flooding and affected persons without power have been computed for a combination of realistic future flooding events via the Electrical Network Flood Resilience Model developed in this study. It has been learned that most buildings, and therefore their inhabitants, lose power due to the failure of a specific component, Medium Voltage—Low Voltage transformer buses, and that flood risk solutions should focus on protecting network components from inundation to ensure its functionality through flooding events. Solutions like dry proofing such components before severe flooding occurs is recommended for several neighborhoods analyzed in this study.

Impacts of Low Voltage PEVs Single Phase Charging on Electrical Distribution Network

2015 ◽  
Vol 781 ◽  
pp. 316-320 ◽  
Author(s):  
Thongchai Klayklueng ◽  
Sanchai Dechanupaprittha
Keyword(s):  
Case Studies ◽  
Single Phase ◽  
Low Voltage ◽  
Distribution Network ◽  
Base Case ◽  
Charging Time ◽  
Electrical Distribution ◽  
Electrical Distribution Network ◽  
Network Simulation Model ◽  
The Impact

This paper presents impacts of low voltage PEV single phase charging on electrical distribution network. Simulation model and analysis tools under DigSILENT Power Factory program were used in this research. There are 5 case studies under this analysis, where each case operates at different charging time durations between 16.00 and 24.00. Assessment of the impact of PEV charging is performed based on the PEA standards. The simulation results show that all charging case studies increase line loading in the distribution network over the limit by 80%. The voltage at the upstream point of the feeder slightly dropped while at the downstream point dropped 4 times lower. Average line losses for all case studies increase approximately 13.36% compared to the base case study.

Investigation of Voltage Unbalance Profile in Low Voltage Electrical Distribution Network with Normal Mode Operation Using MATLAB

2018 ◽  
Vol 35 ◽  
pp. 60-76 ◽  
Author(s):  
Patrick Taiwo Ogunboyo ◽  
Remy Tiako ◽  
Innocent E. Davidson
Keyword(s):  
Power Quality ◽  
Low Voltage ◽  
Voltage Drop ◽  
Distribution Network ◽  
Voltage Profile ◽  
Voltage Unbalance ◽  
Voltage Quality ◽  
Distribution Line ◽  
Electrical Distribution Network ◽  
Statutory Limit

With ever increasing use of semiconductor devices and information technology (ICT) equipment in the industry, homes and offices, power quality is gaining attention to both industry and the electric utility. Power voltage quality cause huge economic losses to businesses all over the world. It is estimated to cost industry and commerce about €100 billion per annum in European Union, since voltage quality problem is one of the major power quality disturbances. This paper presents an investigative a study of the 11/0.4 kV, low voltage electrical distribution network and analyzes voltage unbalance. It recommends an effective method of improving the voltage profile and reducing the voltage unbalance to acceptable standard. The network was modelled using distribution network standard parameters for low voltage distribution network using MATLAB/Simulink sim power system tool box. The simulation results show that the percentage voltage unbalance, correct voltage profile and minimum voltage drop of 0.5 km distribution feeder line is of standard acceptable statutory limit, hence the distribution line operates at optimum performance. However, it is also established that the voltage profile for distribution network feeder lengths of 0.8 km to 5 km for balanced and unbalanced distribution lines from the beginning to the customer terminal of the distribution lengths are less than the acceptable allowable limit of – 5 %, of the nominal voltage value, hence voltages are inadmissible for customers use. Moreso, the percentage voltage unbalance, voltage profile and voltage drop on 0.8 km to 5 km distribution feeder line are all less than standard acceptable statutory limit, hence the distribution line operates below optimum performance. It was established that mitigating these problems require the electricity distribution company to install an effective voltage boosting devices along the network lengths in order provide admissible, permissible and normalize end users standard acceptable voltage.

scholarly journals FIRES ON THE HOUSEHOLD LOW-VOLTAGE DISTRIBUTION BOARD CAUSED BY THE ABSENCE OF POLE MOUNTED FUSES AND SURGE ARRESTERS

2013 ◽  
Vol 3 (4) ◽  
Author(s):  
Nedžad Hadžiefendić ◽  
Ivan Zarev ◽  
Nebojša Đenić ◽  
Marko Medić
Keyword(s):  
Low Voltage ◽  
Distribution Network ◽  
Fault Current ◽  
Fire Occurrence ◽  
Voltage Distribution ◽  
Protective Devices ◽  
Surge Arresters ◽  
Fault Currents ◽  
Electrical Distribution ◽  
Electrical Distribution Network

This paper deals with the issue of the fire occurrence which is caused by low-voltage electrical installations (household distribution board) due to the absence of protective devices (fuses and surge arresters) on the pillars of the electrical distribution network. The example of calculation of fault currents is given, for the fault current on the basis of which it is proved the necessity of installing of pole mounted fuse on the latest pillar of low-voltage electrical distribution network. In the paper there are examples of fire expertise for fires caused by non-installation of pole mounted fuses and surge arresters are presented. Key words:atmospheric discharges, over-voltages, fault current, fire, pole mounted fuse, surge arrester

scholarly journals Studi Analisis Perbandingan Rugi Daya Pada Titik Sambung Pierching Connector Dengan Line Tap Connector Pada Jaringan Tegangan Rendah

2018 ◽  
Vol 3 (1) ◽  
pp. 24
Author(s):  
Ahmad Syaifuddin F ◽  
Arief Budi Laksono ◽  
Suharijanto Suharijanto
Keyword(s):  
Power System ◽  
Distribution System ◽  
Power Loss ◽  
Low Voltage ◽  
Voltage Drop ◽  
Distribution Network ◽  
Distribution Networks ◽  
Channel Network ◽  
Medium Voltage ◽  
Secondary Distribution

Distribution system is divided into primary and secondary distribution networks. The primary distribution network is the network of the substation to the distribution, while the secondary distribution is the channel network from the substation transformer is distributed to the consumer or the load. Primary distribution network is better known as medium voltage network (JTM 20kV) while secondary distribution is low voltage network (JTR 220 / 380V). The distribution network is part of the power system closest to the customer or the load compared to the transmission network.At this time PT. PLN (Persero) experiencing power loss that occurs at the point of connection of low voltage on the use of pierching connector. This study is to analyze the calculation of loss of  power at low voltage network (JTR) by doing comparison of measurement between input with output at connection point of pierching connector with line tap connector. For  conditions required evaluation and analysis for replanning that takes into account the planning criteria such as voltage  drop and take into account the loss of power.

scholarly journals Reliability improvement and loss reduction in radial distribution system with network reconfiguration algorithms using loss sensitivity factor

2022 ◽  
Vol 12 (2) ◽  
pp. 1199
Author(s):  
Parasa Sushma Devi ◽  
Dasari Ravi Kumar ◽  
Kiran Chakravarthula
Keyword(s):  
Radial Distribution ◽  
Distribution System ◽  
Distribution Network ◽  
Load Flow ◽  
Sensitivity Factor ◽  
Network Reconfiguration ◽  
Loss Reduction ◽  
Area Of Interest ◽  
Electrical Distribution ◽  
Electrical Distribution Network

<p>Studies on load flow in electrical distribution system have always been an area of interest for research from the previous few years. Various approaches and techniques are brought into light for load flow studies within the system and simulation tools are being used to work out on varied characteristics of system. This study concentrates on these approaches and the improvements made to the already existing techniques considering time and the algorithms complexity. Also, the paper explains the network reconfiguration (NR) techniques considered in reconfiguring radial distribution network (RDN) to reduce power losses in distribution system and delivers an approach to how various network reconfiguration techniques support loss reduction and improvement of reliability in the electrical distribution network.</p>

Reducing the Losses in the Electrical Power System of Kosovo by Implementation of New Type of Transformers in the Power Distribution System

2016 ◽  
Vol 856 ◽  
pp. 331-336
Author(s):  
Rexhep Shaqiri
Keyword(s):  
Power System ◽  
Power Distribution ◽  
Distribution System ◽  
Distribution Network ◽  
Electric Power System ◽  
Power Losses ◽  
Electrical Power System ◽  
Power Distribution System ◽  
Electrical Distribution ◽  
Electrical Distribution Network

This paper contains a strategy to minimize the power losses in the electrical distribution network of Kosovo. In order to develop the strategy, a model was constructed to simulate an electrical distribution network, and different parameters were included that helped in estimation of the technical power losses in the medium voltage (MV) distribution network. The main objective of this paper is to present approach to minimize technical and non-technical losses in power systems. The analysis of the Kosovo electric power system was performed by means of PSS/E 3.3 software. The results indicate options for reduction of the loses by replacement of old type of transformers and preparation of the MV system for upgrade and change the voltage level from 10 kV to 20 kV. As a first step new 110/10kV transformers can be installed, designed to be reconnected in the future to 110/20kV.

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