High voltage 65kA high current integrated test system R & D and application through the identification

[China Instrument Network Instrument R&D] Recently, Guangdong Science and Technology Institute's "High-Voltage 65kA High Current Integrated Test System R&D and Application" project scientific and technological achievements have been certified by the Guangdong Machinery Industry Association, and the overall technology of the project has reached the international advanced level.

The appraisal committee composed of seven experts from the China Southern Power Grid Science Research Institute, Professor Gao Zhifu and others, carefully listened to the project work summary report made by Lin Zhili, Chief Engineer of Guangdong Quality Inspection Institute, reviewed the relevant materials, and conducted detailed investigations on the spot. After questions and discussions, the appraisal committee unanimously held that the project meets the requirements for the identification of scientific and technological achievements and agreed to pass the appraisal of scientific and technological achievements. The overall technology of the project has reached the international advanced level, and has reached the international advanced level in the calibration technology capability of high-voltage and high-current detection systems.

The project through the independent design of the test circuit and a comprehensive accounting of equipment parameters, to build a 220kV and below transformer temperature rise and induction voltage, 35kV and below switch cabinet internal arc, circuit breaker short-circuit opening and closing, capacitive and inductive current closure The multi-functional comprehensive test system for the switching current of the combinational electric current, which makes the key equipments such as capacitor towers and reactors meet the requirements of various tests; developed to meet the requirement of the STL (International Short Circuit Test Association) for directly calibrating high voltage and large current detection systems. The device can generate various standard short-circuit test waveforms such as short-circuit current, transient recovery voltage, and inrush current injection current, which solves the problem of calibration of high-current measuring instruments in high-voltage electrical appliances laboratories for a long time; developed a high-voltage and large-current detection system, The key parameters such as the peak value, rise time, half-wave time, and time delay of the TRV waveforms were automatically calculated.

The project has applied for 3 national invention patents (1 authorization) and 1 PCT (patent cooperation agreement), 1 US invention patent and 1 national utility model patent, and independent intellectual property rights. The test system developed by the project can meet the requirements of national standards, IEC standards and STL guidelines, and passed the National Accreditation Council (CNAS) and German Motor Vehicle Supervision Association (DEKRA), the United States Underwriters Laboratories (UL), and the British Association of Short-Circuit Detection The accreditation of domestic and foreign certification agencies such as ASTA has been put into use, achieving significant social and economic benefits. The project achievements have played a positive technical support role for the R&D and quality safety of high-voltage transmission and distribution equipment in China and its neighboring countries and regions.

(Original title: Guangdong Science and Technology Institute "High-voltage 65kA high-current integrated test system R & D and application" scientific and technological achievements through the identification)