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eLibrary > BS EN IEC 62501:2024 Voltage sourced converter (VSC) valves for high-voltage direct current (HVDC) power transmission. Electrical testing >

BS EN IEC 62501:2024 Voltage sourced converter (VSC) valves for high-voltage direct current (HVDC) power transmission. Electrical testing, 2024

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BS EN IEC 62501:2024 Voltage sourced converter (VSC) valves for high-voltage direct current (HVDC) power transmission. Electrical testing, 2024

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Annex ZA (normative)Normative references to international publicationswith their corresponding European publications [Go to Page]
English [Go to Page]
CONTENTS
FOREWORD
1 Scope
2 Normative references
3 Terms and definitions [Go to Page]
3.1 Insulation coordination terms
3.2 Power semiconductor terms
3.3 Operating states of converter
3.4 VSC construction terms
3.5 Valve structure terms
4 General requirements [Go to Page]
4.1 Guidelines for the performance of type tests [Go to Page]
4.1.1 Evidence in lieu
Tables [Go to Page]
Table 1 – Conditions for use of evidence in lieu from another HVDC project [Go to Page]
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
4.2 Atmospheric correction factor
4.3 Treatment of redundancy [Go to Page]
4.3.1 Operational tests
4.3.2 Dielectric tests
4.4 Criteria for successful type testing [Go to Page]
4.4.1 General
4.4.2 Criteria applicable to valve levels
4.4.3 Criteria applicable to the valve as a whole
5 List of type tests [Go to Page]
Table 3 – Valve level faults permitted during type tests
6 Operational tests [Go to Page]
6.1 Purpose of tests
6.2 Test object
Table 4 – List of type tests
6.3 Test circuit
6.4 Maximum continuous operating duty test
6.5 Maximum temporary over-load operating duty test
6.6 Minimum DC voltage test
7 Dielectric tests on valve support structure [Go to Page]
7.1 Purpose of tests
7.2 Test object
7.3 Test requirements [Go to Page]
7.3.1 General
7.3.2 Valve support DC voltage test
7.3.3 Valve support AC voltage test
7.3.4 Valve support switching impulse test
7.3.5 Valve support lightning impulse test
8 Dielectric tests on multiple valve unit [Go to Page]
8.1 General
8.2 Purpose of tests
8.3 Test object
8.4 Test requirements [Go to Page]
8.4.1 MVU DC voltage test to earth
8.4.2 MVU AC voltage test
8.4.3 MVU switching impulse test
8.4.4 MVU lightning impulse test
9 Dielectric tests between valve terminals [Go to Page]
9.1 Purpose of the test
9.2 Test object
9.3 Test methods [Go to Page]
9.3.1 General
9.3.2 Method one
9.3.3 Method two
9.4 Test requirements [Go to Page]
9.4.1 Composite AC-DC voltage test
9.4.2 Alternative tests (Method 2 only)
9.4.3 Valve impulse tests
10 IGBT overcurrent turn-off test [Go to Page]
10.1 Purpose of test
10.2 Test object
10.3 Test requirements
11 Short-circuit current test [Go to Page]
11.1 Purpose of tests
11.2 Test object
11.3 Test requirements
12 Tests for valve insensitivity to electromagnetic disturbance [Go to Page]
12.1 Purpose of tests
12.2 Test object
12.3 Test requirements [Go to Page]
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
14 Production tests [Go to Page]
14.1 General
14.2 Purpose of tests
14.3 Test object
14.4 Test requirements
14.5 Production test objectives [Go to Page]
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
15 Presentation of type test results
Annex A (informative)Overview of VSC converters in HVDC power transmission [Go to Page]
A.1 General
A.2 VSC basics
Figures [Go to Page]
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
A.3 Overview of main types of VSC valve
A.4 Switch type VSC valve [Go to Page]
A.4.1 General
Figure A.3 – Output voltage of a VSC phase unit for a 15-level converter, without PWM [Go to Page]
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 [Go to Page]
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
A.5 Controllable voltage source type VSC valve [Go to Page]
A.5.1 General
Figure A.7 – Basic circuit topology of one phase unitof a 3-level flying capacitor converter [Go to Page]
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 [Go to Page]
A.5.3 Cascaded two-level converter (CTL)
Figure A.10 – The full-bridge MMC circuit [Go to Page]
A.5.4 Terminology for valves of the controllable voltage source type
Figure A.11 – The half-bridge CTL circuit
Figure A.12 – Construction terms in MMC valves
Figure A.13 – Construction terms in CTL valves
A.6 Hybrid VSC valves
A.7 Main differences between VSC and conventional HVDC valves
Annex B (informative)Valve component fault tolerance
Annex C (informative)Valve losses determination
Bibliography [Go to Page]

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BS EN IEC 62501:2024 Voltage sourced converter (VSC) valves for high-voltage direct current (HVDC) power transmission. Electrical testing, 2024

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