Research on the development and detection technology of CAN interface chip suitable for relay protection devices

Core chips of the secondary equipment in the power grid are very important to the stable operation of relay protection devices. It is necessary to conduct research on key technologies of industrial grade CAN interface chips to reduce the impact of chip power outage and ensure the safe and stable operation of the large power grid. This article analyzes the usage scenarios and application requirements of CAN interface chips in relay protection devices, compares the performance indicators of relevant chips in China and abroad, and proposes the technical indicators and key technologies for chip design of CAN interface chips suitable for relay protection devices. By studying the impact of core performance indicators of CAN interface chips on the performance of the entire device, a testing and inspection plan that takes into account the impact of CAN interface chips on the performance of the protection device is proposed, promoting the development of domestic chips, enhancing the independent controllability of chips, and ensuring the safe and reliable operation of the power grid.