When a small system is in on-load operation in the early stage of black start, unit paralleling may fail due to reverse power protection.

黑启动初始阶段，小系统空载运行的情况下，由于逆功率保护而往往发生机组并车失败问题。

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This paper describes the features and structure of CAN bus and based on it's principle, gives the connection of each protection unit with the system computer.

本文叙述了CAN总线的特点及结构，并运用CAN通信总线的原理，实现各保护单元与系统机的连接。

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As a try for circuit standardization, the system realizes the standard protection circuit unit and recovering-time circuit unit, which are connected to system through standard 44 pins' bus interface.

作为标准化的尝试，本系统实现了标准的保护电路单元和恢复时间电路单元，通过44芯总线插座与标准总线接口连接。

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