Order Publications

Reference: ISH2015_62

Type:
ISH Collection
Title:

Risk-based Design Methodology for the Selection of Insulation Level Against Lightning-Induced Overvoltages in Medium Voltage Networks

 

Abstracts

Suitable selection of insulation in the medium voltage (MV) overhead lines is vital for network design because lightning-induced over voltages are one of the major causes of faults and damages results into supply interruption. The appropriate level of insulation strength against lightning-induced overvoltages is obtained by balancing the cost of insulation against the reduction in risk of failure in the protected area. This paper presents a novel risk-based design approach to determine the optimum level of insulation strength required against lightning-induced overvoltages. The risk of the insulation flashover is calculated using the probability distributions of lightning-induced overvoltages and the insulator flashover voltages. Furthermore, cost-benefit analysis has been also performed for cost optimal selection of insulation level. In this way, the proposed methodology offers a valuable application in the line design by proposing changes in the existing design or measures to mitigate lightning-induced overvoltages to improve the power system reliability.
 

File Size: 265,8 KB

Year: 2015

 
 
 
Download
Member
FREE free
Non member
FREE free
 

Your AccountYour Account

Password forgotten

Members

may download free of charge all publications including most recent ones


Non Members

may download free of charge publications over three years old and purchase all publications

ContactContact

For any questions in connection with the on-line library, contact:


Publications and Editions Manager

publications@cigre.org