Scope
This standard is applicable to the self commutation converter valve of three-phase bridge voltage source converters (VSCs) in high-voltage direct current transmission systems or back-to-back systems This standard is limited to electrical type tests and routine tests The scope of this standard includes electrical type testing and routine testing of dynamic brake valves applied to high-voltage direct current (HVDC) overvoltage limitation This standard can be used to guide the testing of static synchronous compensator (STATCOM) valves The tests specified in this standard are based on air insulated valves. For other types of valves, after reaching a consensus between the buyer and seller, the test requirements and acceptance criteria of this standard can also be referred to
Normative references
The following documents are essential for the application of this document.
. For dated references, only the dated version applies to this document. For undated references, the latest version (including all modification orders) applies to this document GB/T 7354 2003 Partial Discharge Measurement (IEC 60270: 2000, IDT) General requirements for the competence of ISO/IEC 17025 testing and calibration laboratoriesFunction of testing report:
1. Project bidding: Issue authoritative third-party CMA/CNAS qualification report
2. Online e-commerce platform entry: Quality inspection report recognized by major e-commerce platforms 3. Used as a sales report: issuing legally effective testing reports to make consumers more confident 4. Papers and research: Provide professional personalized testing needs 5. Judicial services: providing scientific, fair, and accurate testing data 6. Industrial problem diagnosis: Verify the troubleshooting and correction of industrial production problemsBaijian and testing process:
1. Telephone communication and confirmation of requirements
2. Recommend solutions and confirm quotations 3. Mail samples and arrange testing 4. Progress tracking and result feedback 5. Provide reports and after-sales service 6. If urgent or priority processing is requiredTesting and testing characteristics:
1. The testing industry is fully covered, meeting different testing needs
2. Fully cover the laboratory and allocate localized testing nearby3. Engineers provide one-on-one services to make testing more accurate
4. Free initial testing, with no testing fees charged
5. Self service order delivery for free on-site sampling
6. Short cycle, low cost, and attentive service 7. Possess authoritative qualifications such as CMA, CNAS, CAL, etc 8. The testing report is authoritative and effective, and is generally used in China