IEC TR 63065:2017

IEC TR 63065 ®
Edition 1.0 2017-09
TECHNICAL
REPORT
Guidelines for operation and maintenance of line commutated converter (LCC)
HVDC converter station
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IEC TR 63065 ®
Edition 1.0 2017-09
TECHNICAL
REPORT
Guidelines for operation and maintenance of line commutated converter (LCC)

HVDC converter station
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.200; 29.240.01 ISBN 978-2-8322-4802-7

– 2 – IEC TR 63065:2017 © IEC 2017
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms, definitions, and abbreviated terms . 6
3.1 Terms and definitions . 6
3.2 Abbreviated terms . 7
4 Operation . 8
4.1 Operation policy . 8
4.1.1 Target reliability and availability . 8
4.1.2 Operation cost . 9
4.1.3 Manned or unmanned . 9
4.2 Operation condition and limits . 9
4.3 Operations of an HVDC system . 10
4.3.1 General . 10
4.3.2 Typical operation configuration . 10
4.3.3 Set up the control mode . 12
4.3.4 Operation procedure . 13
4.4 Operations of HVDC equipment . 16
4.4.1 Converter valves. 16
4.4.2 Converter transformers and oil immersed smoothing reactors . 19
4.4.3 AC/DC breakers and switchgear . 22
4.4.4 AC/DC filters . 24
4.4.5 Control and protections . 27
4.4.6 DC measurement instruments . 29
4.4.7 Valve cooling system . 30
4.4.8 Auxiliary power system . 33
5 Maintenance . 34
5.1 Maintenance policy . 34
5.1.1 General . 34
5.1.2 Corrective maintenance . 34
5.1.3 Time-based maintenance (TBM) . 34
5.1.4 Condition-based maintenance (CBM) . 35
5.1.5 Reliability-centred maintenance (RCM) . 35
5.1.6 Maintenance programme . 35
5.2 Maintenance during operation . 36
5.2.1 Routine maintenance for converter transformers . 36
5.2.2 Maintenance for control and protections . 36
5.2.3 Maintenance for DC measurements . 37
5.2.4 Routine maintenance for valve cooling system . 37
5.3 Maintenance under outage . 37
5.3.1 Converter valves. 37
5.3.2 Converter transformers . 38
5.3.3 AC/DC breakers and switchgear . 39
5.3.4 AC/DC filters . 40
5.3.5 DC measurements . 40
5.3.6 Valve cooling system . 41
5.3.7 AC/DC arresters . 41

6 Fault analysis and troubleshooting . 42
6.1 General . 42
6.2 System disturbances . 42
6.3 Station faults . 43
6.4 General information for fault analysis . 43
6.4.1 General . 43
6.4.2 Interpreting events and the TFR . 43
6.4.3 Checking plant circuit diagram and application software logics . 43
6.4.4 Analyzing the equipment status . 43
6.4.5 Simulation . 44
6.4.6 Site test . 44
6.4.7 Involving the HVDC supplier . 44
7 Training . 44
7.1 General . 44
7.2 Operator training program . 44
7.2.1 General . 44
7.2.2 Training courses . 44
7.2.3 Participation during installation and commissioning . 45
7.3 Maintenance training program . 45
7.3.1 General . 45
7.3.2 Training courses . 45
7.3.3 Training during equipment installation and testing . 46
7.3.4 Continuous transfer of knowledge . 46
8 Spare parts . 46
9 Tools . 47
10 Documentation . 48
10.1 General . 48
10.2 Documents to be provided by the supplier . 48
10.3 Documents to be prepared by the operators . 48
10.4 Statistics and analysis . 48
Bibliography . 50

Table 1 – Basic tools needed for operation and maintenance of an HVDC converter
station . 47

– 4 – IEC TR 63065:2017 © IEC 2017
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
GUIDELINES FOR OPERATION AND MAINTENANCE
OF LINE COMMUTATED CONVERTER (LCC)
HVDC CONVERTER STATION
FOREWORD
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...