Recently, TBEA Xinjiang New Energy Co., Ltd. successfully won the bid for China Southern Power Grid Corporation Wudongde Power Station to send electricity to Guangdong Guangxi UHV multi-terminal DC demonstration project (referred to as: Kunliulong DC project) DC main equipment. This is TBEA new After the energy company successfully developed the world's first UHV flexible DC converter valve, the first industrialization will help to change the pattern of energy transmission in China.
In May 2017, TBEA New Energy Co., Ltd. cooperated with China Southern Power Grid to develop the world's first ±800kV/5000MW UHV flexible DC transmission converter valve. For the first time, the flexible DC transmission technology was upgraded from ultra high pressure to UHV. The voltage level, proposed a lock-free overhead flexible DC transmission technology, and created a new application situation of UHV flexible DC transmission engineering based on overhead lines.
TBEA New Energy Company flexible DC converter valve tower
What is the Kunliulong DC project? According to reports, the Kunyulong DC project, which has been fully built and currently under construction, will have the highest of four worlds: The world's largest UHV multi-terminal DC transmission project to date The world's first UHV multi-terminal hybrid DC project, the world's first UHV flexible DC converter station project, the world's first flexible DC transmission project with overhead line DC fault self-cleaning capability.
The project starts from Yunnan Kunbei Converter Station in the west, to Liubei Converter Station in Guangxi in the east, and Longmen Converter Station in Guangdong. It adopts ±800 kV three-terminal hybrid DC transmission technology, with a total length of 1489 kilometers and a transmission capacity of 8 million kilowatts. It is a national UHV multi-terminal DC demonstration project. The project is scheduled to be put into operation in 2020. It will be completed and put into operation in 2021. It will increase the transmission capacity of Yunnan Hydropower's 8 million kilowatts channel, and the annual power supply will exceed 32 billion kilowatt hours. Yunnan Clean Hydropower Can be directly transported to the load center of Guangdong, Guangxi.
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The TBEA worked hard to make this national key demonstration project. TBEA New Energy Company set up a technical team headed by the National Thousand Talents Program experts and more than 10 years of senior experts in power electronics, and invested more than 100 million yuan to continuously focus on flexible DC. R&D and industrialization work in the field of transmission. In view of the application requirements of flexible DC transmission for high voltage, large capacity, long distance and overhead lines, a new generation of unblocked overhead flexible DC transmission technology is proposed, which systematically solves the application of flexible DC transmission. In the industry common problems in overhead DC transmission lines, the company successfully developed the first set of overhead flexible DC transmission prototypes, conventional DC-flexible DC hybrid DC transmission prototypes, high and low valve series flexible prototypes, IGBT dual pulse test platform, power module test. Platform, power module self-aging platform, converter valve section operation and short circuit test platform, ±800kV soft-reverse valve valve control system engineering prototype, ±10.5kV/60MW soft-reverse valve prototype prototype and other prototypes or equipment Developed the platform and completed a series of experiments, which strongly supported the design of the Kunyulong DC project.
TBEA New Energy Company will also take advantage of the opportunity of winning the key national projects, relying on the project to continuously improve the level of technical equipment, drive the independent research and development level of high-capacity flexible DC key equipment, and consolidate and enhance TBEA in the field of power equipment. Its international leading position makes greater contributions to transforming the energy transmission pattern, promoting green development, innovation and development, and regional coordinated development.