On January 14, two DC link capacitor independently developed by Jiashan Sunking Power Electronic Capacitor Co., Ltd. (hereinafter referred to as "Jiashan SUN.KING Capacitor") passed the new product technical appraisal organized by the China Machinery Industry Federation, marking the localization of another core equipment of my country's flexible DC transmission project.
It is reported that the new domestic capacitor products that passed the appraisal this time are "ZCMJ2.8-8000 DC link capacitor" and "ZCMJ2.8-7500 DC link capacitor". "ZCMJ2.8-8000 DC link capacitor" relies on the State Grid Zhangbei Project, and "ZCMJ2.8-7500 DC link capacitor" relies on the Southern Grid Middle Channel Project. Both products have successfully completed various operation research tasks, passed professional third-party type tests and obtained test reports, and have been successfully applied in Zhangbei DC Project, Suizhou Distribution Network Project, Hangzhou Low-frequency Transmission Project, Zhoushan Flexible DC Project, Rudong Offshore Wind Power Project, Shenzhen Pengcheng STACOM and many other projects.
In recent years, with the rapid development of new energy in my country, more and more flexible DC transmission projects have been started. Flexible DC projects use IGBT as the core commutation device, and have technical advantages such as no risk of commutation failure, no need for reactive power compensation, and no reliance on active power grids. They are particularly in line with the needs of new power systems with new energy as the main body for flexibility and controllability of power technology. Their technical advantages and application prospects are particularly prominent in the fields of clean energy power transmission, offshore wind power grid connection, and DC power grid construction.
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Jiashan Sunking Power Electronic Capacitor Co., Ltd. Huangkui
“For a long time, my country’s flexible DC project DC link capacitor have been completely dependent on imports, resulting in increased construction costs for flexible DC projects, key technologies and core components being controlled by others, and seriously threatening my country’s power grid development and energy security. Localization can break the foreign technology monopoly, reduce the price level of capacitor, and ultimately solve the problem of localization of core components of flexible DC transmission converter valves. "Speaking of the original intention of developing domestic flexible DC link capacitor, Huang Kui, general manager of Jiashan SUN.KING Capacitor, said that when the group found that the country was ready to vigorously promote the construction of flexible DC projects, the company decided to conduct independent research and development of DC link capacitor.
Realizing the localization of national major engineering equipment is a "breaking ice road" full of hardships and challenges, and it is also the only way for my country's equipment manufacturing industry to be self-reliant and self-reliant. From the official launch of the flexible DC link capacitor research and development project in June 2017, to the successful passing of the last type test project-destruction test in October 2019, and now the two new products have successfully passed the technical appraisal of the appraisal committee composed of more than 20 industry experts. Every step of Jiashan SUN.KING Capacitor is sonorous and powerful.
Currently, the new capacitor products developed by Jiashan SUN.KING Capacitor have been put into operation in small batches in Zhangbei, Rudong offshore wind power projects for more than a year, and no adverse conditions have been found, which has the foundation for large-scale application.
"This time, the two new products of Jiashan SUN.KING Capacitor successfully passed the technical appraisal, which further laid the foundation for accelerating the large-scale application of domestic DC link capacitor in flexible DC projects. In the construction of flexible DC projects, domestic equipment has significant advantages in terms of cost, delivery time, pre-sales and after-sales service quality. In terms of electrical performance and quality, domestic capacitor have also reached the level of imported products. In some performances, we have even surpassed imported products and reached the leading level. This is of great significance to ensure that my country's flexible DC projects are not restricted by others in terms of equipment during the rapid construction period." Huang Kui said frankly.
