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ＳＪ—１２Ｃ型双微机自动准同期装置是在ＳＪ—１２Ａ（Ｂ）基础上结合实际运行需要而开发的新一代更新换代产品。它含有两块独立的ＣＰＵ板，一块完成同期点预报及发电机电压、频率的调节功能，另一块完成闭锁功能。该装置保留了原同期装置的优点，增加了许多新的功能，如汉字液晶显示，无需改变硬件配置即可满足多达１６个不同类型的同期点的自动准同期，友好的人机界面，相位补偿及线性调节等，从而大大提高了装置的总体性能。文中主要介绍了ＳＪ—１２Ｃ型双微机自动准同期装置的设计原理、结构配置及特点。
SJ-12C dual-computer automatic quasi-synchronization device is based on the SJ-12A (B) combined with the actual needs of the operation and development of a new generation of replacement products. It contains two separate CPU boards, one to complete the same period point forecast and generator voltage and frequency adjustment function, the other to complete the locking function. The device retains the advantages of the same period of the original device, adding many new features, such as Chinese LCD display, without changing the hardware configuration to meet up to 16 different types of contemporaneous point automatic synchronization, friendly man-machine interface, phase Compensation and linear adjustment, etc., thus greatly improving the overall performance of the device. This paper mainly introduces the design principle, structure configuration and characteristics of SJ-12C dual-microcomputer automatic quasi-synchronism device.