IEC TS 63042-201:2018

UHV AC transmission systems - Part 201: UHV AC substation design

IEC TS 63042-201:2018(E), which is a Technical Specification, provides common rules for the design of substations with the highest voltages of AC transmission systems exceeding 800 kV, so as to provide safety and proper functioning for the intended use.

General Information

• Status: Published
• Publication Date: 12-Dec-2018
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 11.040.60 - Therapy equipment
• ICS: 29.240.01 - Power transmission and distribution networks in general
• ICS: 29.240.10 - Substations. Surge arresters
• Technical Committee: TC 122 - UHV AC transmission systems
• Drafting Committee: WG 2 - TC 122/WG 2
• Current Stage: PPUB - Publication issued
• Start Date: 03-Jan-2019
• Completion Date: 13-Dec-2018

Standards Content (Sample)

IEC TS 63042-201 ®
Edition 1.0 2018-12
TECHNICAL
SPECIFICATION
colour
inside
UHV AC transmission systems –
Part 201: UHV AC substation design
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IEC TS 63042-201 ®
Edition 1.0 2018-12
TECHNICAL
SPECIFICATION
colour
inside
UHV AC transmission systems –
Part 201: UHV AC substation design

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.240.01; 29.240.10 ISBN 978-2-8322-6330-3

– 2 – IEC TS 63042-201:2018 © IEC 2018
CONTENTS
FOREWORD . 6
1 Scope . 8
2 Normative references . 8
3 Terms and definitions . 9
4 UHV AC substation requirement . 10
4.1 General requirement . 10
4.2 System demands . 10
4.3 Operation and maintenance requirements . 11
4.4 Construction requirements . 11
4.5 Site condition . 11
4.6 Environmental impact. 12
4.7 Economy . 12
5 Bus scheme and feeder connection . 12
5.1 General . 12
5.2 Scheme at high-voltage side of main transformer . 13
5.3 Scheme at intermedium-voltage side of main transformer . 14
5.4 Scheme at low-voltage side of main transformer . 14
5.5 System neutral earthing mode of a UHV AC substation . 15
6 Selection of equipment and conductors . 16
6.1 General . 16
6.1.1 Voltage . 16
6.1.2 Rated current . 16
6.1.3 Rated frequency . 16
6.2 Basic requirements . 16
6.2.1 Electrical requirements . 16
6.2.2 Mechanical requirements . 17
6.2.3 Environmental conditions . 17
6.3 Transformer . 18
6.4 UHV shunt reactor and neutral-earthing reactor . 19
6.5 UHV switchgear . 19
6.6 UHV circuit breaker . 20
6.7 UHV disconnector . 20
6.8 UHV earthing switch for maintenance . 21
6.9 High-speed earthing switch . 22
6.10 UHV current transformer . 22
6.11 UHV voltage transformer . 22
6.12 UHV surge arrester . 23
6.13 Reactive power compensation device for low voltage side of UHV
transformer . 23
6.14 UHV bushing . 23
6.15 UHV insulator . 24
6.16 UHV conductor. 24
6.16.1 General . 24
6.16.2 Conductor type . 24
6.16.3 Selection of current-carrying capacity (cross-section) . 25
6.16.4 Corona and radio interference . 25
6.16.5 Mechanical strength. 26

7 Equipment layout . 26
7.1 General requirement of equipment layout . 26
7.1.1 General . 26
7.1.2 Optimization of substation layout . 26
7.1.3 Seismic performance . 26
7.1.4 Construction, serviceability and reliability and failure response ability. 26
7.2 Minimum clearances . 27
7.2.1 Normal environmental conditions . 27
7.2.2 Minimum clearances in air-voltage range . 27
7.3 Electromagnetic environment . 27
7.3.1 Electrostatic induction mitigation design . 27
7.3.2 Magnetic induction mitigation design . 28
7.3.3 Audible noise mitigation design . 28
7.4 Selection of switchgear equipment . 29
7.5 Switchgear Installations layout . 29
7.5.1 General . 29
7.5.2 Location arrangement of switchgear . 29
7.5.3 Basic arrangement of surge arresters . 30
7.5.4 Optimal gas-insulated busbar (GIB) layout and length . 30
7.5.5 Utilization of working space for substations . 30
7.6 Protection against direct lightning strike . 31
7.7 Earthing systems . 31
7.7.1 General considerations . 31
7.7.2 Multiple point earthing method for GIS . 32
7.8 Seismic design . 33
7.8.1 General . 33
7.8.2 Basic seismic design . 33
7.8.3 Special seismic performance for UHV AC substation equipment . 34
8 Control, protection and communication . 35
8.1 General . 35
8.2 Control system . 35
8.3 Relay protection . 36
8.3.1 General . 36
8.3.2 Duplicated configuration of UHV AC equipment relay protection . 36
8.3.3 UHV transformer protection . 36
8.4 Communication . 37
8.5 Electromagnetic compatibility requirements for control and protection

equipment . 37
9 DC and AC auxiliary power supply system . 38
9.1 General . 38
9.2 DC power supply system . 38
9.3 AC auxiliary power supply system . 38
9.4 AC uninterruptible power supply (UPS) system . 39
10 UHV gantry, support and foundation design . 39
10.1 UHV gantry and support design . 39
10.1.1 General . 39
10.1.2 Load and combination of loads . 39
10.1.3 Detailing requirements . 40
10.2 GIS or MTS foundation design . 41
...