hvdc（直流）.doc

hvdc（直流） Baidu homepage | login news website post bar to know MP3 picture video encyclopedia library Help to set up the 5th anniversary NBA of the core users of economic science and sports in the natural cultural geography historical life Dc transmission technology Encyclopedia card Dc transmission technology has been closely related to the development of dc transmission technology (especially high-voltage, high-power converter). But in recent years, in addition to have the progress of power electronic technology to push, because a large number of dc project put into operation, HVDC control and protection, fault, reliability and other problems also increasingly important. Therefore, the comprehensive application of various new technologies has made new progress in dc transmission technology. directory 1. Direct contact with the thyristor 2. Grounding pole lead fault measuring device 3. Real-time multi-processor control system 4. Global positioning system 5. Light dc transmission 5.1 difference between light dc transmission and traditional dc transmission 5.2 typical implementation of lightweight dc 5.3 characteristics of light dc transmission technology 6. Reliability technology of dc transmission system 1. Direct contact with the thyristor 2. Grounding pole lead fault measuring device 3. Real-time multi-processor control system 4. Global positioning system 5. Light dc transmission 5.1 difference between light dc transmission and traditional dc transmission 5.2 typical implementation of lightweight dc 5.3 characteristics of light dc transmission technology 1. Direct contact with the thyristor The thyristor trigger technology is one of the key technologies of dc transmission, and the use of light contact thyristor can eliminate the trigger circuit board which is used for the photoelectric conversion. However, the corresponding protection or measuring circuit should be integrated into the thyristor, so the technology is complex and the process is strict. 13 this new d