The deployment of facts in high voltage networks: a case study in Oman

2010 ◽  
Author(s):  
H.A. Hassan
Keyword(s):  
High Voltage

Reducing failure rate at high voltage (HV) testing of insulator using Six Sigma methodology

2018 ◽  
Vol 67 (5) ◽  
pp. 791-808 ◽  
Author(s):  
Darshak A. Desai ◽  
Aurangzeb Javed Ahmed Shaikh
Keyword(s):  
Failure Rate ◽  
High Voltage ◽  
Six Sigma ◽  
Manufacturing Industry ◽  
Small Scale ◽  
Case Study Methodology ◽  
Content Type ◽  
Sigma Level ◽  
Ceramic Manufacturing

PurposeThis paper, a case study, aims to illustrate the application of Six Sigma in a small-scale ceramic manufacturing industry. The purpose of this paper is to demonstrate the empirical application of DMAIC methodology to reduce failure rate at high voltage (HV) testing of one of the most critical products, insulator.Design/methodology/approachThe case study is based on primary data collected from a real-life situation prevailing in the industry. The case study methodology adopted here is at one small-scale unit wherein the authors have applied DMAIC methodology and observed and recorded the improvement results, especially, reduction in failure rate at HV testing of insulator and, thus, increase in Sigma level.FindingsThe results found after implementation of the solutions are very significant. The rejection percentage has been reduced from 0.5 to 0.1 percent and consequently the Sigma level has been improved from 4.4 to 5.0.Research limitations/implicationsThis success story can be a guiding roadmap for other such industries to successfully implement Six Sigma to improve quality, productivity and profitability.Practical implicationsThis case study will serve as one of the resource bases for the industries which have till not implemented Six Sigma and benefited from the same.Social implicationsImproved quality and productivity leads to better economy. This case will help industries to serve the society with better economy with improved quality and productivity.Originality/valueThough ceramic industries in India are having enormous potential for growth, majority of them, especially, small and medium industries are either not aware of or not implementing Six Sigma to reap its multidimensional benefits of improving quality, productivity and profitability. This study highlights the benefits reaped by small-scale ceramic manufacturing industry opening up the avenues for its application at other such organizations.

Ferroresonance Causing Sustained High Voltage at A De-energized 138 kV Bus: A Case Study

2019 ◽  
Author(s):  
Yunfei Wang ◽  
Xiaodong Liang ◽  
Iraj Rahimi Pordanjani ◽  
Ryan Cui ◽  
Ali Jafari ◽  
...  
Keyword(s):  
High Voltage

scholarly journals Effects of Electromagnetic Fields (EMF)Near High Voltage Transmission Line: a Case Study

2015 ◽  
Vol 7 (1) ◽  
pp. 66-68
Author(s):  
M Quamruzzaman ◽  
Munima Haque ◽  
Farruk Ahmed ◽  
Md Shabab Zaman
Keyword(s):  
Transmission Line ◽  
Electromagnetic Fields ◽  
High Voltage ◽  
Medical Physics ◽  
High Voltage Transmission Line ◽  
High Voltage Transmission

Abstract not availableBangladesh Journal of Medical Physics Vol.7 No.1 2014 66-68

scholarly journals Hidden High Voltage Safety Risks for Parallel High Voltage Transmission Lines

2018 ◽  
Vol 171 ◽  
pp. 02005
Author(s):  
M. Nassereddine ◽  
J. Rizk ◽  
M. Nagrial ◽  
A. Hellany ◽  
N. Moubayed ◽  
...  
Keyword(s):  
High Voltage ◽  
Transmission Lines ◽  
Electrical Power ◽  
Paper Analysis ◽  
Induced Voltage ◽  
Parallel Transmission ◽  
Safety Risks ◽  
Unsafe Condition ◽  
Risk Potential

High voltage (HV) infrastructures market is growing due to the corresponding growth in industries and population. To ensure continuous and reliable electrical power supply, existing substation and transmission lines are being upgraded to accommodate the additional load requirements. These upgrades involve up-rating the existing transmission lines or the installation of new lines. To save on easement cost and reduce the environmental impacts, transmission lines are occupied the same easement or path. This parallel option introduces the risk of induced voltage which could reach an unsafe condition and jeopardize the safety of works and people. This paper analysis and highlight the hidden risk associated with two parallel transmission lines that connected the same high voltage substation. The theoretical study which is supported by the case study shows the high risk potential tempering with the OHEW on the isolated circuit while the other one is still energized

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