IEC TS 63019:2019

Photovoltaic power systems (PVPS) - Information model for availability

IEC TS 63019:2019 provides a framework from which the availability metrics of a PVPS can be derived and reported. It describes how data are categorized and defines generic information categories to which time can be assigned for a PVPS considering internal and external conditions based on fraction of time, system health, and condition by specifying the following:
- generic information categories of a PVPS considering availability and production.
- information category priority to discriminate between concurrent categories.
- entry and exit point for each information category to allocate designation of time.
The PVPS comprises all photovoltaic (PV) modules, inverters, DC and AC collection systems, grid interconnection equipment, the site, its infrastructure, and all functional service elements. Formulas in this document provide normative guidance for standardization. Beyond that, it is not the intention of this document to specify exactly how other undefined, time-based availability metrics shall be calculated. The annexes are examples and guiding principles for developing methods for calculation and estimation of availability metrics, subject to the knowledge and concurrence for use by the involved stakeholders. Estimates and calculations also have recommendations on how they are to be used as part of the informative function.

General Information

• Status: Published
• Publication Date: 08-May-2019
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 27.160 - Solar energy engineering
• Technical Committee: TC 82 - Solar photovoltaic energy systems
• Drafting Committee: WG 3 - TC 82/WG 3
• Current Stage: PPUB - Publication issued
• Start Date: 08-Apr-2019
• Completion Date: 09-May-2019

Standards Content (Sample)

IEC TS 63019 ®
Edition 1.0 2019-05
TECHNICAL
SPECIFICATION
colour
inside
Photovoltaic power systems (PVPS) – Information model for availability

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IEC TS 63019 ®
Edition 1.0 2019-05
TECHNICAL
SPECIFICATION
colour
inside
Photovoltaic power systems (PVPS) – Information model for availability

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 27.160 ISBN 978-2-8322-6638-0

– 2 – IEC TS 63019:2019  IEC 2019
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 9
3 Terms and definitions . 9
4 Overview . 12
4.1 Understanding the use of this document . 12
4.2 The information model . 13
5 Information categories . 16
5.1 General . 16
5.2 Information available (PVPS) . 18
5.3 Operative . 18
5.4 In service . 19
5.5 Full capability . 19
5.6 Partial capability . 20
5.7 Service set points . 20
5.8 Out of service . 21
5.9 Out of environmental specification . 22
5.10 Requested shutdown . 23
5.11 Out of electrical specification . 23
5.12 Nonoperative . 24
5.13 Scheduled maintenance . 24
5.14 Planned corrective action . 25
5.15 Forced outage . 25
5.16 Suspended. 26
5.17 Force majeure . 26
5.18 Information unavailable (PVPS) . 27
6 Information model for PVPS . 27
6.1 Time-based capability information model . 27
6.2 Time-based total PVPS capacity availability . 28
6.3 Application of the information model to different plant levels . 28
6.4 Asset management functions of the PVPS . 29
6.5 Limitations . 30
6.6 Information category priority . 30
Annex A (informative)  Information category-based availability indicators . 33
A.1 General . 33
A.2 Operational availability . 33
A.3 Technical availability . 34
A.4 Use of the tool . 35
Annex B (informative) Energy-based tracking. 36
B.1 General . 36
B.2 Specific resource and modeling-based performance (using IEC TS 61724) . 36
B.3 Energy-weighted availability approach . 36
B.4 Fractional power estimation techniques . 37
B.5 Addressing lost production in the information model . 39

Annex C (informative) Reliability, availability, maintainability (RAM)
definitions/formulas, availability/stakeholder types, data, and optional categories . 41
C.1 General . 41
C.2 RAM definitions and metrics applicable to forced and maintenance outages . 42
C.3 Stakeholders and types of availability . 42
C.4 Data . 44
C.5 Forced outage – optional categories . 45
C.5.1 General . 45
C.5.2 Response time (R) . 46
C.5.3 Diagnostic time (D) . 46
C.5.4 Logistic time (L) . 46
C.5.5 Repair time (F) . 47
C.5.6 Partial capability – optional category of degraded . 47
C.5.7 Partial capability – optional category of derated . 48
C.5.8 Partial capability – optional category of other. 49
Annex D (informative) Verification scenarios . 50
D.1 Grid outage . 50
D.1.1 Scenario description . 50
D.1.2 Analysis and conclusion . 50
D.2 Entry and exit points . 51
D.3 Inverter outages . 53
D.4 Inverter overtemperature outage . 54
D.4.1 General . 54
D.4.2 Assessment and conclusion . 54
D.5 Tracking system outage . 55
D.5.1 Scenario description . 55
D.5.2 Analysis and conclusion . 55
D.6 Information category priority . 56
D.6.1 General . 56
D.6.2 Assessment . 57
D.7 Verification scenario – Energy: Measured, expected, and lost . 57
D.7.1 Scenario description . 57
D.7.2 Assessment . 58
D.8 Spinning reserve equivalent . 60
D.9 Multiple aggregated systems . 61
D.9.1 Scenario . 61
D.9.2 Approach and methodology . 61
D.9.3 How is the energy calculated? . 61
D.9.4 Assessment . 61
D.10 Service set points operation . 61
D.10.1 General . 61
D.10.2 Scenario . 62
D.10.3 Assessment . 62
D.11 Information unavailable data . 62
D.11.1 General . 62
D.11.2 Scenario . 62
D.11.3 Conclusion . 63
D.12 Redundancy capable PVPS with reliability block diagram . 63
D.12.1 General . 63

– 4 – IEC TS 63019:2019  IEC 2019
D.12.2 Scenario . 64
D.12.3 Analysis .
...