IEC TR 63292:2020
(Main)Photovoltaic power systems (PVPSs) - Roadmap for robust reliability
Photovoltaic power systems (PVPSs) - Roadmap for robust reliability
IEC TR 63292:2020 continues the effort started with the availability technical specification (IEC TS 63019). Availability is closely related to PVPS operational capability, health and condition and to produce energy and is a real-time or historical measure. The availability of a system or component is impacted by contractual and non-contractual reliability specifications, maintenance metrics and a corresponding maintenance and repair strategy, and also external factors such as site environmental and grid conditions. The intention of this document is to be a precursor examination of the reliability issues for further address in a task to produce an IEC Technical Specification on this topic.
While this document identifies reliability tools, topics and procedures, there are commercial products available to perform analyses and there is no assessment of those tools or to provide recommendations for one tool over another in this document.
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IEC TR 63292 ®
Edition 1.0 2020-06
TECHNICAL
REPORT
colour
inside
Photovoltaic power systems (PVPSs) – Roadmap for robust reliability
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IEC TR 63292 ®
Edition 1.0 2020-06
TECHNICAL
REPORT
colour
inside
Photovoltaic power systems (PVPSs) – Roadmap for robust reliability
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 27.160 ISBN 978-2-8322-8472-8
– 2 – IEC TR 63292:2020 © IEC 2020
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 8
2 Primary References . 9
3 Terms, definitions and abbreviated terms . 10
3.1 Terms and definitions . 10
3.2 Abbreviated terms . 12
4 Background . 12
5 Interrelationship of Reliability, Maintainability and Availability (RAM) . 13
5.1 General . 13
5.2 Availability basics . 14
5.3 Maintainability basics . 15
5.4 Reliability basics . 16
5.5 Link to IEC TS 63019 . 17
6 Dependability . 18
6.1 Dependability uses reliability tools and topics . 18
6.2 Stakeholders interests throughout the PVPS . 21
7 Reliability tools and topics . 22
7.1 General . 22
7.2 Reliability Block Diagram (RBD) / Monte Carlo simulations . 23
7.3 Failure Modes and Effects Analysis (FMEA) . 24
7.4 Fault Tree Analysis . 25
7.5 Failure Reporting and Corrective Action System (FRACAS) . 25
7.6 Maintainability and other RAM terms . 26
7.7 Critical items list . 26
7.8 Data analysis . 27
7.9 Root Cause Analysis (RCA) . 28
7.10 Long term trend analysis . 28
7.11 Pareto analysis . 29
7.12 Risk analysis. 30
7.13 Life cycle costs of reliability . 31
7.14 Other reliability tools and topics . 31
8 Why reliability, why plan? . 32
9 PVPS recommendations . 33
9.1 General . 33
9.2 Recommendations . 33
Annex A (informative) Reliability plan . 34
Annex B (informative) Reliability objectives, information sources and useful references . 35
B.1 Objectives . 35
B.2 Information sources . 36
B.3 Other useful references not previously identified . 36
Bibliography . 37
Figure 1 – Reliability tools information flow . 23
Figure 2 – Example of recommended metrics . 29
Figure 3 – Frequency analysis of key weather terms in the PVROM database . 30
Figure A.1 – Reliability plan example flowchart . 34
Table 1 – Information category overview for a PVPS (modified from
IEC TS 63019:2019) . 18
Table 2 – Primary reliability interest of stakeholders . 21
– 4 – IEC TR 63292:2020 © IEC 2020
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
PHOTOVOLTAIC POWER SYSTEMS (PVPSs) –
ROADMAP FOR ROBUST RELIABILITY
FOREWORD
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IEC TR 63292 which is a technical report, has been prepared by IEC technical committee 82:
Solar photovoltaic energy systems.
The text of this technical report is based on the following documents:
Enquiry draft Report on voting
82/1671/DTR 82/1716/RVDTR
82/1716A/RVDTR
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on voting indicated in the above table.
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– 6 – IEC TR 63292:2020 © IEC 2020
INTRODUCTION
Reliability of a PVPS or its components is perceived in many ways depending on the perspective
of the observer. This document addresses many of these perspectives ranging from component
failures to the human factors needed in operations and maintenance (O&M) of a PVPS.
Technically, reliability is the probability that a product or a system will perform its intended
functions satisfa
...
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