Maintenance Priority Index of Overhead Transmission Lines for Reliability Centered Approach

Abstract

-Overhead transmission lines are crucial components in power transmission systems. Welldesigned maintenance strategy for overhead lines is required for power utilities to minimize operating costs, while improving the reliability of the power system. This paper presents a maintenance priority index (MPI) of overhead lines for a reliability centered approach. Proposed maintenance strategy is composed of a state index and importance indices, taking into account a transmission condition and importance in system reliability, respectively. The state index is used to determine the condition of overhead lines. On the other hand, the proposed importance indices indicate their criticality analysis in transmission system, by using a load effect index (LEI) and failure effect index (FEI). The proposed maintenance method using the MPI has been tested on an IEEE 9-bus system, and a numerical result demonstrates that our strategy is more cost effective than traditional maintenance strategies.

D-distance Risk Factor for Transmission Line Maintenance Management and Cost Analysis

“…Age could imply an old design and obsolete technical specifications or lower performance for current operating conditions. The importance index (%IMI) was calculated by using (7). Similarly, the WSM was applied in the calculation.…”

“…Ageing and deterioration as well as harsh environmental conditions and electrical stress on HVTL components cause unexpected failures and supply interruption leading to system reliability problems [1][2][3][4]. Consequently, there is a concrete requirement to effectively assess HVTL conditions to manage the reparation, replacement, or renovation tasks of transmission lines as well as to manage operational risks to improve the system operating performance and reliability [5][6][7]. To reach this goal, different approaches were proposed to cope with the risk assessment of HVTLs and manage maintenance tasks [7][8][9][10][11][12].…”

“…Consequently, there is a concrete requirement to effectively assess HVTL conditions to manage the reparation, replacement, or renovation tasks of transmission lines as well as to manage operational risks to improve the system operating performance and reliability [5][6][7]. To reach this goal, different approaches were proposed to cope with the risk assessment of HVTLs and manage maintenance tasks [7][8][9][10][11][12]. In addition, some risk factors were also intensively investigated for condition assessment and risk management [13][14][15].…”

Determination of Maintenance Priority Index (Mpi) for Components on RSG-Gas Safety System

“…The result of the SERP process is the maintenance priority index (MPI) in the form of ranking equipment (system or component) based on certain criteria that determine the criticality level of equipment based on total data and frequency of damage. The result of MPI and equipment mapping is an initial identification process that provides an overview of critical equipment that must be immediately handled and rated reliably [4][5][6]. The outputs generated by this SERP process are as follows:…”

“…Maintenance priority index (MPI) is used for an approach that prioritizes reliability with a proposed maintenance strategy consisting of a state index and an interest index, taking into account the critical component conditions in the reliability of the system [5]. Identify Maintenance Significant Items (MSI) is performed through a combination of quantitative analysis with qualitative analysis.…”