IEC TR 62511:2014
(Main)Guidelines for the design of interconnected power systems
Guidelines for the design of interconnected power systems
IEC TR 62511:2014(E) provides guidelines in planning and design of the interconnected power system (IPS) and consequently achieve the delivery of reliable supply service. The guidelines for the design of interconnected power systems within this document will enhance system reliability, mitigate many of the adverse impacts associated with the loss of a major portion of the system or unintentional separation of a major portion of the system, and will not be consequential because of normal design contingencies. In the context of this Technical Report, interconnected power system means an entity's (control area or a system operator) high-voltage transmission system that can adversely impact other connected systems due to faults and disturbances within its area. In the case of large areas, the system operator may define a subset of its area to keep the adverse impact contained within a smaller portion of its system. This Technical Report specifies the recommended techniques for securing an IPS to ensure a high level of reliability. Generally, interconnected power systems are synchronously connected or asynchronously connected through DC interconnections. This document aims to ensure that the interconnections are designed and operated consistently on both ends. The recommendations include design and operation requirements to withstand the primary contingencies specified in this document.
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IEC TR 62511 ®
Edition 1.0 2014-09
TECHNICAL
REPORT
Guidelines for the design of interconnected power systems
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IEC TR 62511 ®
Edition 1.0 2014-09
TECHNICAL
REPORT
Guidelines for the design of interconnected power systems
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
U
ICS 29.240.99 ISBN 978-2-8322-1865-5
– 2 – IEC TR 62511:2014 © IEC 2014
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 General principles . 14
4.1 General requirements . 14
4.2 System analysis and modeling data exchange requirements . 15
5 Resource adequacy . 15
6 Modeling and assessments . 16
6.1 General . 16
6.2 Stability assessment . 16
6.3 Steady state assessment . 17
6.4 Real time system conditions . 17
6.5 Normal transfers . 17
6.6 Emergency transfers . 18
6.7 Post contingency operation . 18
6.8 Operation under high risk conditions . 18
6.9 Extreme contingency assessment . 19
6.10 Extreme system conditions assessment . 19
6.11 Fault current assessment . 20
7 IPS design guidelines . 20
7.1 General . 20
7.2 Redundancy in transmission system design . 20
7.3 Protection and control system design . 20
7.4 Considerations for issues affecting protection systems reliability and
dependability . 22
7.5 Considerations for issues affecting security . 22
7.6 Considerations for issues affecting dependability and security . 22
7.7 Protection operating time . 23
7.8 Protection system testing . 23
7.9 Analysis of protection performance . 23
7.10 Considerations for current and voltage transformers . 23
7.10.1 AC current transformers . 23
7.10.2 AC voltage transformers (VT), capacitance coupler voltage transformer
(CCVT), and fiber optic voltage transducers . 24
7.11 Logic systems . 24
7.12 Microprocessor-based equipment and software . 24
7.13 Batteries and direct current (DC) auxiliary supply . 24
7.14 Station service AC supply . 25
7.15 AC circuit breakers . 25
7.16 Teleprotection (communication for protective functions) . 25
7.17 Control cables and wiring and ancillary control devices . 26
7.18 Environment . 26
7.19 Grounding . 26
7.20 Specific application considerations . 26
7.20.1 AC transmission line protection . 26
7.20.2 Transmission station protection . 27
7.20.3 AC breaker failure protection . 27
7.20.4 Generating station protection . 27
7.20.5 HVDC system protection . 28
7.20.6 AC capacitor bank protection . 28
7.20.7 Static VAR compensator (SVC) protection . 29
7.21 Reporting of protection systems . 29
Bibliography . 30
– 4 – IEC TR 62511:2014 © IEC 2014
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
GUIDELINES FOR THE DESIGN OF
INTERCONNECTED POWER SYSTEMS
FOREWORD
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IEC/TR 62511, which is a technical report, has been prepared by IEC technical committee 8:
Systems aspects for electrical energy supply.
The text of this technical report is based on the following documents:
Enquiry draft Report on voting
8/1346/DTR 8/1364/RVC
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A bilingual version of this publication may be issued at a later date.
– 6 – IEC TR 62511:2014 © IEC 2014
GUIDELINES FOR THE DESIGN OF
INTERCONNECTED POWER SYSTEMS
1 Scope
The primary objective of this Techni
...
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