자산관리시스템을 위한 변전소 변압기 수명 계산 방법

다국어 초록 (Multilingual Abstract)

A method for evaluating replacement life of substation transformers required to build an asset management system is presented. The electrical utilities are replacing the transformers at the time when the failure rate of the transformers increases to prevent sudden failures. In this study, the mean time to failure of the transformers was defined as the technical end of life, and 52 years was calculated by analyzing the cumulative density function of the failure data. The replacement time of the transformers was defined as the strategic end of life, and 32 years was calculated by failure rate (Bathtub curve) analysis. These lives of the substation transformers are calculated based on 154kV three-phase transformers with sufficient failure data, and the lives of 154kV single-phase transformers applied since 1995 should be recalculated when failure data is sufficiently collected. In addition, the replacement life of the transformers should be strategically decided according to the business value of the company and the risk associated with the failure of the transformer.

목차 (Table of Contents)

• Abstract
• 1. 서론
• 2. 본론
• 3. 결론
• References

참고문헌 (Reference)

1 "Transmission Asset Risk Management" CIGRE 2010

2 "Transmission Asset Risk Management" CIGRE 2014

3 DongJin Kweon, "Transformer/GIS Performance Data Analysis for Asset Management" KEPCO 2016

4 "Transformer Reliability Survey" CIGRE 2015

5 "Strategic asset management of power networks" IEC 2015

6 "State of the Art of Instrument Transformers" CIGRE 2009

7 "PAS 55-1; Asset Management, Part 1 : Specification for the Optimized Management of Physical Assets"

8 "Life Management Techniques for Power Transformer" CIGRE 2003

9 "Industry-Wide Transformer Database : Key Findings and Case Studies"

10 "ISO 55000; Asset management : Overview, Principles and Terminology"

11 "Guidelines to an Optimized Approach to the Renewal of Existing Air Insulated Substations" CIGRE 2006

12 "Guidelines for the Use of Statistics and Statistical Tools on Life Data" CIGRE 2017

13 "Fatigue Endurance Capability of Conductor Clamp Systems Update of Present Knowledge" CIGRE 2007

14 "Asset Management Decision Making using Different Risk Assessment Methodologies" CIGRE 2013