|
IEC TR 63292
Edition 1.0 2020-06
TECHNICAL
REPORT
colour
inside
Photovoltaic power systems (PVPSs) – Roadmap for robust reliability
your local IEC member National Committee for further information.
IEC Central Office Tel.: +41 22 919 02 11
3, rue de
CH-1211 Geneva 20
Switzerland
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.
About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.
IEC publications search - webstore.iec.ch/advsearchform Electropedia - www.electropedia.org
The advanced search enables to find IEC publications by a The world's leading online dictionary on electrotechnology,
variety of criteria (reference number, text, technical containing more than 22 000 terminological entries in English
committee,…). It also gives information on projects, replaced and French, with equivalent terms in 16 additional languages.
and withdrawn publications. Also known as the International Electrotechnical Vocabulary
(IEV) online.
IEC Just Published - webstore.iec.ch/justpublished
Stay up to date on all new IEC publications. Just Published IEC Glossary - std.iec.ch/glossary
details all new publications released. Available online and 67 000 electrotechnical terminology entries in English and
once a month by email. French extracted from the Terms and Definitions clause of
IEC publications issued since 2002. Some entries have been
IEC Customer Service Centre - webstore.iec.ch/csc collected from earlier publications of IEC TC 37, 77, 86 and
If you wish to give us your feedback on this publication or CISPR.
need further assistance, please contact the Customer Service
.
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
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
Publicly Available Specifications (PAS) and Guides (hereafter referred to as "IEC Publication(s)"). Their
preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
may participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence between
any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
rights. IEC shall not be held responsible for identifying any or all such patent rights.
The main task of IEC technical committees is to prepare International Standards. However, a
technical committee may propose the publication of a technical report when it has collected
data of a different kind from that which is normally published as an International Standard, for
example "state of the art".
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
Full information on the voting for the approval of this technical report can be found in the report
on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
Mandatory information categories defined in this document are written in capital letters; optional
information categories are written in bold letters.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct understanding
of its contents. Users should therefore print this document using a colour printer.
– 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
...