IEEE C62.82.2-2022

$51.46

IEEE Guide for the Application of Insulation Coordination (Approved Draft)

Published By	Publication Date	Number of Pages
IEEE	2022

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Description

Revision Standard – Active. The calculation method for selection of phase-to-ground and phase-to-phase insulation withstand voltages for equipment is presented. Methods for insulation coordination of different air-insulated systems like transmission lines and substations are outlined. The methods of analysis are illustrated by practical examples.

PDF Catalog

PDF Pages	PDF Title
1	Front Cover
2	Title page
4	Important Notices and Disclaimers Concerning IEEE Standards Documents
8	Participants
10	Introduction
11	Contents
12	1. Overview 1.1 Scope 1.2 Purpose 1.3 Word usage
13	2. Normative references
14	3. Voltage stresses 3.1 Origin and classification of voltage stresses 3.1.1 Continuous power frequency voltages 3.1.2 Temporary overvoltages 3.1.2.1 Fault overvoltages
15	3.1.2.2 Load rejection overvoltages 3.1.2.3 Resonance and ferroresonance overvoltages
16	3.1.2.4 Transformer energization caused overvoltages 3.1.2.5 Limitation of temporary overvoltages by surge arresters 3.1.3 Switching overvoltages 3.1.3.1 Line energization and reclosing overvoltages
17	3.1.3.2 Typical phase–ground switching overvoltages
18	3.1.3.3 Typical phase–phase switching overvoltages
19	3.1.3.4 Longitudinal switching overvoltages 3.1.3.5 Fault overvoltages
20	3.1.3.6 Load rejection overvoltages 3.1.3.7 Inductive and capacitive currents switching overvoltages 3.1.4 Lightning overvoltages
21	3.1.4.1 Lightning overvoltages caused by switching 3.1.4.2 Limitation of lightning overvoltages 3.2 Characteristics of overvoltage protective devices 3.2.1 General
22	3.2.2 Gapless metal-oxide surge arresters 3.2.2.1 Lightning overvoltages 3.2.2.2 Switching overvoltages
23	3.2.3 Gapped metal-oxide arrester 3.2.4 Gapped silicon-carbide arresters 3.2.4.1 Lightning overvoltages
24	3.2.4.2 Switching overvoltages 3.2.5 Spark gaps
25	4. Insulation strength 4.1 General 4.1.1 Self-restoring insulation 4.1.2 Non–self-restoring insulation 4.2 Insulation behavior at power frequency voltages
26	4.3 Influences of atmospheric conditions on external insulation 4.4 Probability of disruptive discharge
27	4.5 Influence of polarity and overvoltage shape 4.6 Phase–phase and longitudinal insulation
28	5. Performance/reliability criterion 5.1 Transmission lines 5.2 Substations
29	6. Insulation coordination procedures 6.1 Procedures for continuous power frequency voltage and temporary overvoltages 6.1.1 General 6.1.2 Design approach 6.1.3 Contamination severity
30	6.1.4 Insulation strength—IEEE recommendations
32	6.1.5 Insulation strength—CIGRE recommendations
33	6.1.6 Insulation strength—IEC recommendation
35	6.1.7 Comparison 6.1.8 Switching impulse and lightning impulse strength 6.1.9 Effect of elevation
36	6.1.10 Methods to improve performance 6.2 Procedures for switching overvoltages (SOVs) 6.2.1 Transmission lines—phase to ground 6.2.1.1 General
37	6.2.1.2 Stress
38	6.2.1.3 Strength
40	6.2.1.4 Sensitivity
41	6.2.1.5 Design criteria 6.2.2 Transmission lines—phase to phase 6.2.2.1 General 6.2.2.2 Self-restoring insulation
44	6.2.3 Substations phase to ground 6.2.3.1 Self-restoring insulation
46	6.2.3.2 Non–self-restoring insulation 6.2.3.3 Example
47	6.2.4 Substations phase to phase 6.2.4.1 General
49	6.2.4.2 Example 6.3 Procedures for lightning overvoltages 6.3.1 Transmission lines
50	6.3.1.1 Shielding failures 6.3.1.2 Backflash
52	6.3.1.3 Improving performance of existing lines 6.3.1.4 Example—shielding failure
53	6.3.1.5 Example—backflash
54	6.3.2 Substations 6.3.2.1 Shielding 6.3.2.2 Open breaker position
55	6.3.2.3 Selection of the incoming surge
57	6.3.2.4 Contingency conditions 6.3.2.5 Selection of arrester rating and preliminary location of arresters
58	6.3.2.6 Digital transient program model
59	6.3.2.7 Selection of BILs and clearances 6.3.3 Simplified method for a simple substation
60	6.3.3.1 Incoming surge
61	6.3.3.2 Voltage at equipment
64	6.3.3.3 Estimating the BIL and clearance
65	6.3.4 Application examples 6.3.4.1 Single-line station
72	6.3.4.2 Two-line station
75	6.3.4.3 Contingency conditions
77	6.3.5 Clearances for lightning stroke
79	7. Final selection 7.1 Transmission lines 7.2 Substations
81	Annex A (informative) Bibliography
83	Back Cover