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BS EN IEC 62501:2024

BS EN IEC 62501:2024

$198.66

Voltage sourced converter (VSC) valves for high-voltage direct current (HVDC) power transmission. Electrical testing

Published By Publication Date Number of Pages
BSI 2024 60
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IEC 62501:2024 applies to self-commutated converter valves, for use in a three-phase bridge voltage sourced converter (VSC) for high voltage DC power transmission or as part of a back-to-back link, and to dynamic braking valves. It is restricted to electrical type and production tests. This document can be used as a guide for testing of high-voltage VSC valves used in energy storage systems (ESS). The tests specified in this document are based on air insulated valves. The test requirements and acceptance criteria can be used for guidance to specify the electrical type and production tests of other types of valves. This edition includes the following significant technical changes with respect to the previous edition: a) Conditions for use of evidence in lieu are inserted as a new Table 1; b) Test parameters for valve support DC voltage test, 7.3.2, and MVU DC voltage test, 8.4.1, updated; c) AC-DC voltage test between valve terminals, Clause 9, is restructured and alternative tests, by individual AC and DC voltage tests, added in 9.4.2; d) Partial discharge test in routine test program is removed; e) More information on valve component fault tolerance, Annex B, is added; f) Valve losses determination is added as Annex C.

PDF Catalog

PDF Pages PDF Title
2 undefined
5 Annex ZA (normative)Normative references to international publicationswith their corresponding European publications
6 English
CONTENTS
9 FOREWORD
11 1 Scope
2 Normative references
3 Terms and definitions
12 3.1 Insulation coordination terms
3.2 Power semiconductor terms
3.3 Operating states of converter
13 3.4 VSC construction terms
14 3.5 Valve structure terms
15 4 General requirements
4.1 Guidelines for the performance of type tests
4.1.1 Evidence in lieu
Tables
Table 1 – Conditions for use of evidence in lieu from another HVDC project
16 4.1.2 Selection of test object
4.1.3 Test procedure
4.1.4 Ambient temperature for testing
4.1.5 Frequency for testing
4.1.6 Test reports
4.1.7 Conditions to be considered in determination of type test parameters
Table 2 – Minimum number of valve levels to be operational type testedas a function of the number of valve levels per valve
17 4.2 Atmospheric correction factor
4.3 Treatment of redundancy
4.3.1 Operational tests
4.3.2 Dielectric tests
18 4.4 Criteria for successful type testing
4.4.1 General
4.4.2 Criteria applicable to valve levels
19 4.4.3 Criteria applicable to the valve as a whole
5 List of type tests
Table 3 – Valve level faults permitted during type tests
20 6 Operational tests
6.1 Purpose of tests
6.2 Test object
Table 4 – List of type tests
21 6.3 Test circuit
6.4 Maximum continuous operating duty test
22 6.5 Maximum temporary over-load operating duty test
6.6 Minimum DC voltage test
23 7 Dielectric tests on valve support structure
7.1 Purpose of tests
7.2 Test object
7.3 Test requirements
7.3.1 General
7.3.2 Valve support DC voltage test
24 7.3.3 Valve support AC voltage test
25 7.3.4 Valve support switching impulse test
7.3.5 Valve support lightning impulse test
26 8 Dielectric tests on multiple valve unit
8.1 General
8.2 Purpose of tests
8.3 Test object
8.4 Test requirements
8.4.1 MVU DC voltage test to earth
27 8.4.2 MVU AC voltage test
28 8.4.3 MVU switching impulse test
29 8.4.4 MVU lightning impulse test
9 Dielectric tests between valve terminals
9.1 Purpose of the test
30 9.2 Test object
9.3 Test methods
9.3.1 General
31 9.3.2 Method one
9.3.3 Method two
32 9.4 Test requirements
9.4.1 Composite AC-DC voltage test
33 9.4.2 Alternative tests (Method 2 only)
35 9.4.3 Valve impulse tests
37 10 IGBT overcurrent turn-off test
10.1 Purpose of test
10.2 Test object
10.3 Test requirements
38 11 Short-circuit current test
11.1 Purpose of tests
11.2 Test object
11.3 Test requirements
39 12 Tests for valve insensitivity to electromagnetic disturbance
12.1 Purpose of tests
12.2 Test object
40 12.3 Test requirements
12.3.1 General
12.3.2 Approach one
12.3.3 Approach two
12.3.4 Acceptance criteria
13 Tests for dynamic braking valves
41 14 Production tests
14.1 General
14.2 Purpose of tests
14.3 Test object
14.4 Test requirements
42 14.5 Production test objectives
14.5.1 Visual inspection
14.5.2 Connection check
14.5.3 Voltage-grading circuit check
14.5.4 Control, protection and monitoring circuit checks
14.5.5 Voltage withstand check
14.5.6 Turn-on / turn-off check
14.5.7 Pressure test
43 15 Presentation of type test results
44 Annex A (informative)Overview of VSC converters in HVDC power transmission
A.1 General
A.2 VSC basics
45 Figures
Figure A.1 – A single VSC phase unit and its idealized output voltage
Figure A.2 – Output voltage of a VSC phase unit for a 2-level converter
46 A.3 Overview of main types of VSC valve
A.4 Switch type VSC valve
A.4.1 General
Figure A.3 – Output voltage of a VSC phase unit for a 15-level converter, without PWM
47 A.4.2 2-level converter
A.4.3 Multi-level diode clamped converter
Figure A.4 – Basic circuit topology of one phase unit of a 2-level converter
48 A.4.4 Multi-level flying capacitor converter
Figure A.5 – Basic circuit topology of one phase unitof a 3-level diode-clamped converter
Figure A.6 – Basic circuit topology of one phase unitof a 5-level diode-clamped converter
49 A.5 Controllable voltage source type VSC valve
A.5.1 General
Figure A.7 – Basic circuit topology of one phase unitof a 3-level flying capacitor converter
50 A.5.2 Modular multi-level converter (MMC)
Figure A.8 – A single VSC phase unit with controllable voltagesource type VSC valves
Figure A.9 – The half-bridge MMC circuit
51 A.5.3 Cascaded two-level converter (CTL)
Figure A.10 – The full-bridge MMC circuit
52 A.5.4 Terminology for valves of the controllable voltage source type
Figure A.11 – The half-bridge CTL circuit
53 Figure A.12 – Construction terms in MMC valves
Figure A.13 – Construction terms in CTL valves
54 A.6 Hybrid VSC valves
A.7 Main differences between VSC and conventional HVDC valves
55 Annex B (informative)Valve component fault tolerance
57 Annex C (informative)Valve losses determination
58 Bibliography

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