Summary

Satisfactory performance of substation equipment is critical for any utility company. During their service life such assets transition from new to being aged by having one or more developing failure modes, and if left unattended eventually reaching the point of failure. The need is then to have the capability to identify the time frames for these transition stages. TB xxx describes risk based methodologies for all significant asset types. Firstly, they can be used to create asset specific plans for maintenance, refurbishment and asset replacement. Secondly, they can provide resilience information on a functional basis through a network. Each is part of the asset management credo that all assets should have lifetime management plans to meet business objectives.

Table of content

1. Introduction

1.1. Goal of this WG and the TB
1.2. The concept of risk

2. Assessing the likelihood of failure

2.1. Approaches to identify likelihood of failure
2.2. Asset health indices and their role
2.3. Creating the AHI Methodology

3. Assessing the consequences of failure

3.1. Alignment of failure definition
3.2. Consequence types to be considered
3.3. Defining Consequence Parameters
3.4. Evaluation of Consequences
3.5. Example of Consequence Evaluation

4. Risk Analysis and Prioritization

4.1. Risk Identification
4.2. Risk Analysis
4.3. Risk Evaluation
4.4. Key considerations

5. Decision making

5.1. Key objectives
5.2. Companies risk appetite and Asset Management Objectives
5.3. Decision making process
5.4. Additional Considerations on Decision making

6. Recommended process

6.1. General principles
6.2. Steps of the process

7. Conclusion

7.1. Key findings
7.2. Proposed process
7.3. The Road Ahead

Appendix A

A.1. General terms
A.2. Specific terms

Appendix B
Appendix C

C.1. UK Distribution Network Operators
C.2. UK Transmission Network Operators
C.3. United Energy
C.4. TenneT
C.5. PLN Indonesia
C.6. SSEN Transmission
C.7. Indian Subcontinent and South Asia
C.8. Elia

Additional informations

Publication type Technical Brochures
Reference 986
Publication year
Publisher CIGRE
ISBN 978-2-85873-891-1
Study committees
Working groups WG B3.61
File size 8 MB
Pages number 81
Price for non member 160 €
Price for member Free

Authors

J. BEDNAŘÍK, Convenor (IE), E. MORALES, Secretary (US)

A. BABIZKI (DE), ALBERT LIVSHITZ (US), A. GOYVAERTS (BE), D. O'BRIEN (GB), D. GANNON (GB), G. BALZER (DE), J. SMIT (NL), S. KUMAR (IN), T. WEHRSTEDT (DE), T. MCGRAIL (GB), U. KUMAR DAS (IN), V. FERRERAS ALVAREZ (GB)

Corresponding Members:
A. WILSON (GB), B. VAN MAANEN (NL), C. BALOYI (ZA), C. BECKETT (AU), C. MCCAHEY (IE), D. KOMLJENOVIC (CA), H. MANNINEN (EE), J. LAULETTA (US), J. PRAZNIK (SI), K. TAKETA (JP), K. TILL (GB), L. MCCARTNEY (IE), L. FIGUEROA (FR), M. KHALIL (PL), R. CSELKÓ (HU), T. JUNG (CA), S. KHUNTIA (NL)

 

 

 

Keywords

Asset Management, Maintenance, Refurbishment, Replacement Strategies, Risk Assessment, Diagnostics, Real-Time Monitoring, Predictive Analytics, Asset Criticality, Asset Health Index

Risk and asset health based decision making in existing substations