Power system safety management and audit protocols

Abstract

The major objective of a safety audit is to determine the effectiveness of the company's safety and loss prevention measures. Identifying potential electrical hazards to prevent or minimize loss of life and property is perceived seriously by the utilities world wide. Safety audit is a methodical approach to evaluate potential hazards enabling suggestions for improvement. It is an important tool for identifying deterioration of standards, areas of risks or vulnerability, hazards and potential incidents in plants for determining necessary action to minimize hazards ensuring effective and meaningful safety efforts. A comprehensive electrical safety audit provides a thorough review of the utility installations, identifies potential electrical hazards, flaws in design system, maintenance system, etc. This paper presents a safety management system and audit protocols to design, plan and execute the electrical safety audit program.

Power Transformer Condition-Based Evaluation and Maintenance (CBM) Using Dempster–Shafer Theory (DST)

“…Maintenance according to the system condition uses all available methods to determine the technical level of the system and equipment condition to access maintenance only when the condition of system components falls below a certain critical level. The condition of the system is determined by tests, inspections, diagnosis, measurement and the analysis of measured data [11][12][13]. The advantages of this approach are high reliability and maximum utilization of system parts reserves.…”

“…They can be divided into two major groups, offline methods and online methods, each consisting of specific methods [14,15]. Common offline methods are determination of the degree of polymerization (DP), furan analysis, dielectric response analysis, insulation resistance, sweep frequency response analysis (SFRA) and others [11,16]. Online methods are dissolved gas analysis (DGA), partial discharge analysis, thermal monitoring and vibration analysis [11,15,17].…”

“…Common offline methods are determination of the degree of polymerization (DP), furan analysis, dielectric response analysis, insulation resistance, sweep frequency response analysis (SFRA) and others [11,16]. Online methods are dissolved gas analysis (DGA), partial discharge analysis, thermal monitoring and vibration analysis [11,15,17]. DGA is the most widely applied technique in modern monitoring systems and the application can be achieved either online or offline.…”