IEC TR 63515:2025

Conceptual framework of power system resilience

IEC TR 63515:2025 provides a conceptual framework for power system resilience. It covers the definition, evaluation metrics and methods, improvement strategies and uses cases of power system resilience. This document is applicable to developing resilient power system and implementing resilience improvement strategies.
This document is not exhaustive, and it is possible to consider other aspects, such as different application scenarios, evaluation methods, and improvement measures.

General Information

• Status: Published
• Publication Date: 10-Mar-2025
• ICS: 33.200 - Telecontrol. Telemetering
• Technical Committee: SC 8C - Network Management in Interconnected Electric Power Systems
• Drafting Committee: PT 4 - TC 8/SC 8C/PT 4
• Current Stage: PPUB - Publication issued
• Start Date: 21-Feb-2025
• Due Date: 11-Mar-2025
• Completion Date: 11-Mar-2025

Standards Content (Sample)

IEC TR 63515 ®
Edition 1.0 2025-03
TECHNICAL
REPORT
Conceptual framework of power system resilience

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IEC TR 63515 ®
Edition 1.0 2025-03
TECHNICAL
REPORT
Conceptual framework of power system resilience

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.200  ISBN 978-2-8327-0255-0

– 2 – IEC TR 63515:2025 © IEC 2025
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms, definitions, and abbreviated terms . 6
3.1 Terms and definitions . 6
3.2 Abbreviated terms . 7
4 General . 7
5 Driving factors . 8
5.1 Diversified threats to power system . 8
5.1.1 General . 8
5.1.2 High wind . 8
5.1.3 Extreme heat . 9
5.1.4 Extreme cold . 9
5.1.5 Earthquake . 9
5.1.6 Hydrological disasters . 10
5.1.7 Other natural disasters . 10
5.2 Complex characteristics of power system . 10
5.2.1 General . 10
5.2.2 High proportion of renewable energies. 11
5.2.3 High proportion of power electronic devices . 11
5.2.4 Diversified load characteristics . 11
5.2.5 Infrastructure interdependencies . 12
6 Definition of power system resilience . 12
6.1 Definition . 12
6.2 Interpretation . 14
6.3 Comparison between resilience and other related concepts . 14
6.3.1 Reliability. 14
6.3.2 Vulnerability. 15
6.3.3 Flexibility . 15
6.3.4 Security . 15
6.3.5 Strength . 15
7 Models and features . 16
7.1 Short-term resilience model . 16
7.2 Long-term resilience model . 17
7.3 Features of power system resilience . 17
7.3.1 General . 17
7.3.2 Preparation . 18
7.3.3 Resistance . 18
7.3.4 Adaption . 18
7.3.5 Restoration . 18
7.3.6 Perception . 18
7.3.7 Coordination . 19
7.3.8 Learning . 19
8 Evaluation metrics and guidelines . 19
8.1 General . 19
8.2 Evaluation metrics . 19

8.2.1 Quantitative metrics . 19
8.2.2 Qualitative metrics . 23
8.3 Evaluation guidelines . 26
8.3.1 Evaluation criteria . 26
8.3.2 Evaluation methods . 27
9 Improvement strategies . 27
9.1 General . 27
9.2 Preventive strategies . 28
9.3 Sustained operation strategies . 29
9.4 Recovery strategies . 29
9.5 Long-term resilience strategies . 30
10 Use cases . 31
10.1 General . 31
10.2 Resilience assessment and improvement against ice sleeves in Italy . 31
10.3 Sustained operation strategies during earthquakes applied in Japan . 31
10.4 Resilience improvement strategies against hurricanes applied in Florida . 32
10.5 Construction of the resilient city power grid in Shanghai . 33
11 Summary and perspectives . 34
Annex A (informative) Exemplary evaluation method of resilient power system . 36
A.1 Evaluation method of resilient power system based on Monte Carlo
simulation . 36
A.2 Evaluation method of power system resilience based on analytic hierarchy
process (AHP) . 37
Bibliography . 39

Figure 1 – Function curve of short-term resilience . 16
Figure 2 – Framework of long-term power system resilience . 17
Figure 3 – Features of power system resilience . 18
Figure 4 – The resilience triangle in the resilience curve . 20
Figure 5 – Resilience curve of the power system under extreme events . 20
Figure A.1 – Flowchart of power system resilience evaluation method based on Monte
Carlo simulation . 37
Figure A.2 – Flowchart of analytic hierarchy process (AHP) . 38

Table 1 – Comparison between resilience and other related concepts . 16

– 4 – IEC TR 63515:2025 © IEC 2025
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
CONCEPTUAL FRAMEWORK OF POWER SYSTEM RESILIENCE

FOREWORD
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