This is a new generation of DC control and protection platform, which can be applied and developed for ultra-high voltage/ultra-high voltage DC transmission, flexible DC transmission, DC distribution network, SVC. SVG and other power electronic control and protection systems. With the rapid construction of China's energy Internet, new technologies and new products such as multi-terminal DC, hybrid DC, and DC circuit breakers have entered the engineering application stage, and higher requirements have been put forward for the calculation processing, data acquisition and transmission of the DC transmission control and protection operation platform. The traditional DC transmission control system uses a multi-plug-in distributed computing scheme, which has the limitations of large computational transmission delay, high power consumption and difficult heat dissipation in terms of further improving performance. Therefore, it is necessary to study a new generation of DC transmission control and protection platform to realize ultra-high performance computing processing, ultra-high-speed signal acquisition and transmission, high-reliability hardware redundancy, and use distributed system-level buses to support multi-host cascades to build ultra-large-scale parallel computing. Realize the horizontal flexible expansion of computing resources, can comprehensively improve the adjustment response performance and action speed of the DC control and protection system, and meet the development needs. The new host chassis is of standard 2U height, which is 50% less than the traditional size and has the advantages of miniaturization and high integration. Fully enclosed integrated chassis adopts large-size heat sink fan-free design and has good anti-electromagnetic interference capability. The chassis has a generous and simple appearance and is rich in scientific and technological beauty. The core module, interface module and power supply module are easy to plug and unplug, easy to maintain, and support the front and rear wiring installation, adapt to various group screen installation requirements.