XLPE cable is a type of cross-linked polyethylene cable that plays an extremely important role in the power grid. The operation of XLPE power cable lines, especially the safety and reliability of cable accessories, should be given sufficient attention. Necessary and appropriate measures must be taken to prevent accidents and monitor the operation of power cable lines. The testing plan for XLPE cables mainly includes withstand voltage test, routine state assessment, and partial discharge detection. The main cable testing that can be used in on-site operation is partial discharge detection
General idea of cable partial discharge detection
The testing plan for XLPE cables mainly includes voltage withstand test, routine state evaluation, and partial discharge detection. The main cable testing that can be used for on-site operation is partial discharge detection.
In terms of XLPE cable partial discharge testing, the power company considers the following three aspects and organizes the implementation of cable partial discharge testing work, striving to cover all medium and high voltage power cables of the power company (1) For newly built or repaired XLPE cable lines, on-site partial discharge tests should be conducted simultaneously with voltage withstand tests. Create conditions to gradually incorporate partial discharge testing into the acceptance process during on-site acceptance (2) For cable lines in regular operation, portable detection equipment should be used to incorporate cable partial discharge detection into the daily inspection work (3) For a few cable lines that require special attention, explore and consider installing an online partial discharge monitoring system to continuously monitor the partial discharge situation in the cables In terms of management, the work of partial discharge detection has borrowed from the successful experience of infrared temperature measurement work that has been carried out for many years. By formulating management systems and issuing implementation rules, the scope, method, detection cycle, and data storage of partial discharge detection are standardized, and testing personnel are trained and guided through various operation guidelinesFunction 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