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BSI PD IEC TS 63042-201:2018

$198.66

UHV AC transmission systems – UHV AC substation design

Published By Publication Date Number of Pages
BSI 2018 64
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This part of 63042, 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.

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PDF Pages PDF Title
2 undefined
4 CONTENTS
8 FOREWORD
10 1 Scope
2 Normative references
11 3 Terms and definitions
12 4 UHV AC substation requirement
4.1 General requirement
4.2 System demands
Figures
Figure 1 – Bird’s-eye view of a typical UHV AC substation
13 4.3 Operation and maintenance requirements
4.4 Construction requirements
4.5 Site condition
14 4.6 Environmental impact
4.7 Economy
5 Bus scheme and feeder connection
5.1 General
15 5.2 Scheme at high-voltage side of main transformer
Figure 2 – Double busbar (DB) with or without bus section connection
16 5.3 Scheme at intermedium-voltage side of main transformer
5.4 Scheme at low-voltage side of main transformer
Figure 3 – One-and-a-half circuit breaker (OHCB)
Figure 4 – Two-circuit breaker (2CB)
17 5.5 System neutral earthing mode of a UHV AC substation
Figure 5 – Example diagram of a bus scheme and feeder connection
18 6 Selection of equipment and conductors
6.1 General
6.1.1 Voltage
6.1.2 Rated current
6.1.3 Rated frequency
6.2 Basic requirements
6.2.1 Electrical requirements
19 6.2.2 Mechanical requirements
6.2.3 Environmental conditions
20 6.3 Transformer
21 6.4 UHV shunt reactor and neutral-earthing reactor
6.5 UHV switchgear
22 6.6 UHV circuit breaker
6.7 UHV disconnector
23 6.8 UHV earthing switch for maintenance
24 6.9 High-speed earthing switch
6.10 UHV current transformer
6.11 UHV voltage transformer
Tables
Table 1 – Comparison of a four-legged reactor and HSES
25 6.12 UHV surge arrester
6.13 Reactive power compensation device for low voltage side of UHV transformer
6.14 UHV bushing
26 6.15 UHV insulator
6.16 UHV conductor
6.16.1 General
6.16.2 Conductor type
27 6.16.3 Selection of current-carrying capacity (cross-section)
6.16.4 Corona and radio interference
Table 2 – Comparison of conductors
28 6.16.5 Mechanical strength
7 Equipment layout
7.1 General requirement of equipment layout
7.1.1 General
7.1.2 Optimization of substation layout
7.1.3 Seismic performance
7.1.4 Construction, serviceability and reliability and failure response ability
29 7.2 Minimum clearances
7.2.1 Normal environmental conditions
7.2.2 Minimum clearances in air-voltage range
7.3 Electromagnetic environment
7.3.1 Electrostatic induction mitigation design
30 7.3.2 Magnetic induction mitigation design
7.3.3 Audible noise mitigation design
31 7.4 Selection of switchgear equipment
7.5 Switchgear Installations layout
7.5.1 General
7.5.2 Location arrangement of switchgear
32 7.5.3 Basic arrangement of surge arresters
7.5.4 Optimal gas-insulated busbar (GIB) layout and length
7.5.5 Utilization of working space for substations
33 7.6 Protection against direct lightning strike
7.7 Earthing systems
7.7.1 General considerations
Figure 6 – Typical configuration of UHV gas-insulated switchgear and crane location
34 7.7.2 Multiple point earthing method for GIS
35 7.8 Seismic design
7.8.1 General
7.8.2 Basic seismic design
Figure 7 – Earthing methods
36 7.8.3 Special seismic performance for UHV AC substation equipment
Figure 8 – Flow chart for seismic qualification
37 8 Control, protection and communication
8.1 General
8.2 Control system
38 8.3 Relay protection
8.3.1 General
8.3.2 Duplicated configuration of UHV AC equipment relay protection
8.3.3 UHV transformer protection
39 8.4 Communication
8.5 Electromagnetic compatibility requirements for control and protection equipment
40 9 DC and AC auxiliary power supply system
9.1 General
9.2 DC power supply system
9.3 AC auxiliary power supply system
41 9.4 AC uninterruptible power supply (UPS) system
10 UHV gantry, support and foundation design
10.1 UHV gantry and support design
10.1.1 General
10.1.2 Load and combination of loads
42 10.1.3 Detailing requirements
43 10.2 GIS or MTS foundation design
Figure 9 – Example of continuous UHV gantry and independent gantry
44 Figure 10 – GIS foundation forms
45 Annex A (informative)Load combination of UHV AC equipment
Table A.1 – Example of load combination for UHV AC equipment
46 Annex B (informative)Specification of UHV AC equipment and conductor
Table B.1 – UHV voltage specification
Table B.2 – Specification of UHV short-circuit current
Table B.3 – Noise specification
47 Table B.4 – Surge arrester specification applied in different countries
48 Annex C (informative)1 000 kV outdoor overhead flexible conductor for UHV AC substations in China
C.1 General
C.2 Environmental conditions
C.3 Current-carrying capacity and thermal stability check
C.3.1 Current-carrying capacity check
49 C.3.2 Thermal stability check
Table C.1 – Current-carrying capacity of bundle conductor
50 C.4 Determination of bundle spacing
C.4.1 General
C.4.2 Calculation of maximum electric field strength around conductor
51 C.5 Corona inception voltage
Figure C.1 – Relationship between maximum electric field strength and bundle spacing
52 C.6 Electric field strength on ground caused by electrostatic induction
Table C.2 – Corona inception voltage of conductor
53 Figure C.2 – Layout plan of main transformer incoming lines
54 Annex D (informative)Corona noise reduction measures of a UHV AC substation conductor under the rainy condition in Japan
D.1 Basic concept of corona noise reduction
D.2 Structure design of UHV AC substation conductor
55 Figure D.1 – Conductor design of UHV AC substation
Table D.1 – Estimated values of corona noise of UHV AC transmission line
56 D.3 Design criteria of partial discharge on UHV AC substation conductor
D.4 Corona noise measurement of the entrance in UHV AC test station
Table D.2 – Design criteria of partial discharge on UHV AC substation conductors
57 Table D.3 – Results of corona noise measurements and average value of corona noise
58 Annex E (informative)Typical examples of items to be considered to select switchgear type
Table E.1 – The principal technology designs for substations (CIGRE TB 570)
59 Table E.2 – Typical examples of items to be considered to select switchgear type
60 Annex F (informative)Standards related to seismic design
F.1 Typical seismic guide and standards
F.2 Comparison of main items among the seismic standards
Table F.1 – Typical seismic guide and standards
Table F.2 – Comparison of main items among seismic standards
61 Bibliography
BSI PD IEC TS 63042-201:2018
$198.66