IEC TS 63042-302:2021

UHV AC transmission systems - Part 302: Commissioning

IEC TS 63042-302:2021(E) applies to the commissioning of UHV AC transmission systems.
It mainly specifies the test purposes, test items, test preconditions, test methods and test acceptance criteria during pre-commissioning and system commissioning. Also, the measurement requirements for system commissioning are specified.

General Information

• Status: Published
• Publication Date: 03-Oct-2021
• 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 3 - TC 122/WG 3
• Current Stage: PPUB - Publication issued
• Start Date: 14-Oct-2021
• Completion Date: 04-Oct-2021

Standards Content (Sample)

IEC TS 63042-302 ®
Edition 1.0 2021-10
TECHNICAL
SPECIFICATION
colour
inside
UHV AC transmission systems –
Part 302: Commissioning
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IEC TS 63042-302 ®
Edition 1.0 2021-10
TECHNICAL
SPECIFICATION
colour
inside
UHV AC transmission systems –
Part 302: Commissioning
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.240.01; 29.240.10 ISBN 978-2-8322-1024-6

– 2 – IEC TS 63042-302:2021  IEC 2021
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 8
3 Terms and definitions . 8
4 General . 9
4.1 Requirements . 9
4.2 Main purpose . 9
4.3 General structure of commissioning . 10
4.4 Scope of application . 10
4.5 Technical preparation of system commissioning . 10
5 Pre-commissioning . 11
5.1 General . 11
5.2 Combined test . 11
5.2.1 General . 11
5.2.2 Protection and control system test . 11
5.2.3 Instrument transformer test . 12
5.2.4 Switchgear and transformer test . 12
5.2.5 AC and DC power supply system test . 13
5.3 Communication system test . 13
6 System commissioning . 13
6.1 General . 13
6.2 Test requirements . 14
6.2.1 General . 14
6.2.2 Energizing test of no-load UHV power transformer . 14
6.2.3 Energizing test of tertiary connected reactor . 14
6.2.4 Energizing test of tertiary connected capacitor . 15
6.2.5 Energizing test of UHV busbar shunt reactor . 16
6.2.6 Energizing test of UHV busbar . 16
6.2.7 Energizing test of no-load UHV transmission line . 17
6.2.8 Loop closing (interconnecting)/opening (splitting) test . 18
7 Measurement in system commissioning . 19
7.1 General . 19
7.2 Measurement requirements . 19
7.2.1 General . 19
7.2.2 Transient voltage and current measurement . 19
7.2.3 Electric quantity measurement . 20
7.2.4 Relay protection measurement . 20
7.2.5 Harmonic measurement . 20
7.2.6 Sound level measurement of power transformer/shunt reactor . 20
7.2.7 Vibration measurement . 21
7.2.8 DGA of power transformer/shunt reactor . 21
7.2.9 Temperature measurement . 21
7.2.10 Power frequency electric and magnetic field measurement of substation
and transmission line . 22
7.2.11 Audible noise measurement of substation and transmission line . 22

7.2.12 Radio interference measurement of transmission line . 22
7.2.13 Partial discharge monitoring in GIS/power transformer . 22
Annex A (informative) Commissioning experiences in China . 23
A.1 General . 23
A.2 Overview. 23
A.3 Regulations . 23
A.4 Pre-commissioning . 23
A.5 System commissioning . 26
A.5.1 General . 26
A.5.2 Technical preparations . 26
A.5.3 Confirmation on preconditions for on-site commissioning . 27
A.5.4 System commissioning tests . 27
A.6 Measurement in system commissioning . 35
A.6.1 General . 35
A.6.2 Measurement in system commissioning . 36
Annex B (informative) Commissioning experiences in Japan . 39
B.1 Overview. 39
B.2 Regulations . 39
B.3 Pre-commissioning in Japan . 39
B.3.1 General . 39
B.3.2 Combined test . 40
B.3.3 Communication system test . 41
B.4 System commissioning in Japan . 42
B.4.1 General . 42
B.4.2 Energizing test. 42
B.5 Measurement in system commissioning in Japan . 43
B.5.1 General . 43
B.5.2 Measurement in system commissioning . 44
Annex C (informative) Commissioning experiences in India . 51
C.1 Overview. 51
C.2 Design, testing, installation, transportation and construction . 52
C.3 On-site acceptance tests . 53
C.3.1 General . 53
C.3.2 1 200/400 kV, 333 MVA single phase transformers . 53
C.3.3 1 200 kV dead tank spring-spring type SF6 circuit-breakers . 53
C.3.4 1 200 kV double break centre rotating and knee type disconnector . 54
C.3.5 1 200 kV capacitive voltage transformers . 54
C.3.6 850 kV surge arrestors . 54
C.4 Commissioning . 54
Bibliography . 56

Figure 1 – General structure of on-site acceptance tests and commissioning . 10
Figure A.1 – Circuit for test of UHV transformer with current increasing from zero . 31
Figure A.2 – Circuit for test of UHV transformer with voltage increasing from zero . 32
Figure A.3 – Circuit for loop closing (interconnecting)/opening (splitting) test operated
by UHV transmission line circuit breakers . 34
Figure B.1 – Circuit for transient voltage and current measurement . 44

– 4 – IEC TS 63042-302:2021  IEC 2021
Figure B.2 – Analysis results of electrostatic induced field in the vicinity of bushing
above the ground . 47
Figure B.3 – Electrostatic induction field intensity distribution . 47
Figure C.1 – Basic set-up at Bina 1 200 kV National Test Station . 52
Figure C.2 – Typical variation in voltage over the period of 4 days at Bina 1 200 kV

National Test Station . 55

Table 1 – Scope of application . 10
Table 2 – Recommended test items of pre-commissioning .
...