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IEEE 3002.3 2018:2019 Edition

IEEE 3002.3 2018:2019 Edition

$81.25

IEEE Recommended Practice for Conducting Short-Circuit Studies and Analysis of Industrial and Commercial Power Systems

Published By Publication Date Number of Pages
IEEE 2019 184
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New IEEE Standard – Active. Activities related to short-circuit analysis, including design considerations for new systems, analytical studies for existing systems, as well as operational and model validation considerations for industrial and commercial power systems are addressed. Fault current calculation and device duty evaluation is included in short-circuit analysis. Accuracy of calculation results primarily relies on system modeling assumptions and methods used. The use of computer-aided analysis software with a list of desirable capabilities recommended to conduct a modern short-circuit study is emphasized. Examples of system data requirements and result analysis techniques are presented.

PDF Catalog

PDF Pages PDF Title
1 IEEE Std 3002.3-2018 Front cover
2 Title page
4 Important Notices and Disclaimers Concerning IEEE Standards Documents
7 Participants
9 Introduction
IEEE 3000 Standards Collection™
10 Contents
13 1. Scope
2. Normative references
14 3. Definitions, acronyms, and abbreviations
3.1 Definitions
19 3.2 Acronyms and abbreviations
21 4. Introduction
4.1 Overview
22 4.2 Objectives for short-circuit analysis
4.3 Methodology and standards
23 5. Description of short-circuit current
5.1 Introduction
5.2 Available short-circuit current
24 5.3 Symmetrical and asymmetrical currents
26 5.4 Short-circuit calculations
28 5.5 Total short-circuit current
30 5.6 Why short-circuit currents are asymmetrical
5.7 DC component of short-circuit currents
5.8 Significance of current asymmetry
31 5.9 The application of current asymmetry information
32 5.10 Maximum peak current
37 5.11 Types of faults
39 5.12 Arc resistance
40 6. General short-circuit calculation method
6.1 Introduction
6.2 Fundamental principles
44 6.3 Short-circuit calculation procedure
45 6.4 One-line diagram
52 6.5 Per-unit and ohmic manipulations
54 6.6 Network theorem and calculation techniques
62 6.7 Symmetrical components—modeling method for unbalanced faults calculation
66 6.8 Representing transformers with non-base voltages
74 6.9 Specific time period and variations on fault calculations
76 6.10 Determination of X/R ratios for fault calculations
77 7. Equipment modeling for short-circuit calculation
7.1 Introduction
78 7.2 Power grid
7.3 Synchronous machines
83 7.4 Induction machines
90 7.5 Transformers
91 7.6 Duplex reactor
92 7.7 Transmission lines and cables
93 7.8 Capacitor and capacitive shunt components
94 7.9 Equivalent circuits
7.10 Zero sequence line representation
95 8. Short-circuit calculation method and device duty per ANSI standards
8.1 Introduction
8.2 Basic assumptions and system modeling
96 8.3 ANSI recommended practice for ac decrement modeling
100 8.4 ANSI practice for dc decrement modeling
107 8.5 ANSI-conformable fault calculations
109 8.6 ANSI-approved standards and interrupting duties
110 8.7 Unbalanced short-circuit calculations
118 9. Application of short-circuit interrupting equipment per ANSI standard
9.1 Introduction
9.2 Application considerations
119 9.3 Equipment data
120 9.4 Fully-rated systems
9.5 Low-voltage series-rated equipment
121 9.6 Low-voltage circuit breaker short-circuit capabilities less than rating
122 9.7 Equipment checklist for short-circuit currents evaluation
123 9.8 Equipment phase duty calculations
128 9.9 Equipment ground fault duty calculations
129 9.10 Capacitor switching
10. Short-circuit calculation method and device duty per IEC standard
10.1 Introduction
130 10.2 System modeling and methodologies
131 10.3 Voltage factors
10.4 Short-circuit currents per IEC 60909
132 10.5 Short-circuits far from generator
137 10.6 Short-circuits near generator
144 10.7 Influence of the motors
146 10.8 Fault calculations in complex systems
150 10.9 Low-voltage systems
154 11. Comparison of ANSI and IEC short-circuit calculation methods
11.1 Introduction
11.2 Difference in equipment modeling
155 11.3 Difference in calculation method
156 12. Equipment data required for short-circuit calculation
12.1 Introduction
157 12.2 Utility sources
12.3 Generators
158 12.4 Synchronous motors
159 12.5 Induction motors
12.6 Transformers
160 12.7 Reactors
161 12.8 Capacitors
12.9 Static regenerative drives
162 12.10 Circuit breakers, contactors, and current transformers
12.11 Cables
163 12.12 Transmission lines
12.13 Protective device ratings
164 13. Data collection and preparation
13.1 Introduction
13.2 Utility short-circuit parameters
13.3 Equipment data from existing system
165 13.4 Typical data for short-circuit calculation
166 13.5 Library data from computer software
14. Model and data validation
14.1 Introduction
14.2 Parameters and model to be validated
167 14.3 Methods for model and data validation
15. Study scenarios and solution parameters
15.1 Introduction
15.2 Maximum and minimum short-circuit contributions
168 15.3 System configurations
15.4 System operating conditions
169 16. Results and reports
16.1 Introduction
16.2 ANSI standard based studies
170 16.3 IEC standard based studies
17. Features of analysis tools
17.1 Introduction
17.2 Essential features for ANSI-based studies
172 17.3 Essential features for IEC based studies
173 17.4 Essential features for all standards
174 17.5 Optional features
175 18. Illustration examples
18.1 ANSI example system
178 18.2 IEC Example system
180 Annex A (informative)Bibliography

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IEEE 3002.3 2018
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