An Overview of Cold Load Pickup Issues in Distribution Systems

Kumar, Vishal; Gupta, Indra; Gupta, Hari Om

doi:10.1080/15325000500419219

Cited by 18 publications

(11 citation statements)

References 41 publications

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“…It should be noted that how to incorporate the impact of cold load pickup in the robust optimization model may be an interesting topic, which increases the uncertainties for restoration procedure [36], [37].…”

Section: Discussionmentioning

confidence: 99%

Robust Restoration Decision-Making Model for Distribution Networks Based on Information Gap Decision Theory

Chen

Zhang

et al. 2015

IEEE Trans. Smart Grid

126

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Section: Discussionmentioning

confidence: 99%

Robust Restoration Decision-Making Model for Distribution Networks Based on Information Gap Decision Theory

Chen

Zhang

et al. 2015

IEEE Trans. Smart Grid

126

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“…This condition increases the load current to several times the normal value and may last up to several hours [10]. Inrush current are generated due to magnetic saturation of the core having a residual flux.…”

Section: Cold Load Pick Up and Inrush Currentmentioning

confidence: 99%

Creep Failure and Prevention in Aluminum Wound Distribution Transformers

Beniwal

Dwivedi

Gupta

2011

J Fail. Anal. and Preven.

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This paper presents an experimental study on electrical properties and creep behavior of thermomechanically processed 6060 aluminum alloy wire to assess its suitability as a winding conductor in place of electric conductor grade aluminum wire in distribution transformers. Electrical resistivity and the stress exponent and activation energy for creep were measured for both thermo-mechanically processed 6060 aluminum alloy and electric conductor grade aluminum wire. An algorithm is given for estimate the life and switching capability of the distribution transformers considering creep. The results of this study can be used as a guide to select the creep resistant winding material for designing and producing reliable distribution transformers and is valuable especially in power deficient areas, poorly designed and haphazardly expanded power distribution networks where repeatedly energized aluminum wound distribution transformers may fail due to creep in the high voltage winding conductors.

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“…The factors that can affect the magnitude and duration of this phenomenon are many: outage duration, types of connected load, weather, restoration mode, outage causes, the presence of distributed generation and/or automatic transfer schemes, time of day, and load level. For a detailed discussion of this phenomenon and the above factors, see [32,33]. The impact of cold load pickup on reliability studies is usually neglected.…”

Section: Discussionmentioning

confidence: 99%

Reliability Analysis of Distribution Systems with Photovoltaic Generation Using a Power Flow Simulator and a Parallel Monte Carlo Approach

Martínez-Velasco

Guerra

2016

Energies

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This paper presents a Monte Carlo approach for reliability assessment of distribution systems with distributed generation using parallel computing. The calculations are carried out with a royalty-free power flow simulator, OpenDSS (Open Distribution System Simulator). The procedure has been implemented in an environment in which OpenDSS is driven from MATLAB. The test system is an overhead distribution system represented by means of a three-phase model that includes protective devices. The paper details the implemented procedure, which can be applied to systems with or without distributed generation, includes an illustrative case study and summarizes the results derived from the analysis of the test system during one year. The goal is to evaluate the test system performance considering different scenarios with different level of system automation and reconfiguration, and assess the impact that distributed photovoltaic generation can have on that performance. Several reliability indices, including those related to the impact of distributed generation, are obtained for every scenario.

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An Overview of Cold Load Pickup Issues in Distribution Systems

Cited by 18 publications

References 41 publications

Robust Restoration Decision-Making Model for Distribution Networks Based on Information Gap Decision Theory

Robust Restoration Decision-Making Model for Distribution Networks Based on Information Gap Decision Theory

Creep Failure and Prevention in Aluminum Wound Distribution Transformers

Reliability Analysis of Distribution Systems with Photovoltaic Generation Using a Power Flow Simulator and a Parallel Monte Carlo Approach

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