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15:50, Zhoushan soft straight circuit breaker successfully completed large current breaking test, the device successfully cut off 15.6 kA of DC current, marking China's first independent research and development, the world's highest voltage level, the strongest breaking capacity DC circuit breaker The overall technical indicators have reached the international advanced level.
Flexible DC transmission system can not achieve the rapid removal of DC fault, seriously hampered the development of overhead wire straight line and multi-terminal and DC power grid. The successful development of HVDC circuit breakers provides an effective solution to break the technical bottleneck faced by the flexible system , To ensure the safety of the DC power grid, flexible and economical operation. At present, the HVDC circuit breakers and their testing technology are all in the research stage all over the world. There is no mature standard for reference. The HVDC circuit breaker test method and technology research are carried out to fully test the performance of the equipment and ensure the application of equipment engineering Safety and reliability are paramount.
Global Energy Internet Research Institute relies on major national science and technology projects and State Grid science and technology project support, based on independent innovation, research painstakingly studied the HVDC circuit breaker test equivalent mechanism analysis and equivalent evaluation method, put forward a large current operation, high voltage resistance Subject to the breaking and closing test methods and assessment standards, the full-scale test device capable of comprehensively examining the composite stress such as electricity, heat and machinery that can withstand the actual operation of the DC circuit breaker has been built and all the type tests of the DC circuit breaker have been completed.
Zhoushan soft straight circuit breaker passed the test for the company DC circuit breaker test standards and the implementation of the project laid a solid technical foundation to improve the State Grid Corporation in the field of HVDC technology influence and voice, to further consolidate the high-voltage direct current Transmission of the leading position in the field of great significance.
Plate And Tube Integrated Cutting Machine
1. Plate and tube processing, one machine for two purposes, saving space
2. High-load mechanical structure bed, stable processing and high precision
3. Customized laser generator with small slits and less energy consumption
4. Full stroke chuck, tube diameter up to 220mm
5. Short tail material, cost saving
6. The X-axis frame beam is annealed to eliminate internal stress. After rough machining, vibration and aging are carried out before finishing to ensure the rigidity and stability of the moving parts of the cutting head.
7. The bed is equipped with high-quality linear guides, driven by servo motor, high-quality rack and pinion, so that the Z-axis slide plate can achieve reciprocating motion in the X direction.
8. In the process of movement, the limit switch controls the stroke to limit the limit, and there are elastic buffer pads at both ends to limit the mechanical limit to ensure the safety of the system operation.
9. Machine base: frame structure welded with high-quality pipes, professional welding, secondary aging treatment, and precision machining by large-scale gantry milling machines. These design and processing methods ensure that the machine tool has excellent shock resistance, high rigidity and stability.
10. A dust cover is installed on the guide rail to prevent dust debris from falling into the guide rail to affect the movement, keeping clean and smooth movement.
Plate And Tube Integrated Cutting Machine,Plate And Tube Integrated Laser Cutting Machine,Plate And Pipe Laser Cutting,Sheet And Pipe Fiber Laser Machine
GUANGDONG CHITTAK INTELLIGENT EQUIPMENT CO.,LTD , https://www.ctklasercutting.com