给煤控制系统在潮州百万机组的设计与运用

Design and Application of Coal Control System on 1 000 MW Unit in Chaozhou Power Plant

对潮州电厂百万机组所使用的给煤控制系统进行了全面介绍。本体方面详细说明了CS2024型给煤机的控制系统构成以及给煤率的测量与控制。并列举了实际使用中CS2024型给煤机的定度步骤,以保证给煤量的精度。在给煤控制方面,利用DCS功能实现了给煤控制系统的联锁与保护。重点对给煤自动调节逻辑作出了详细阐述,保证给煤量与锅炉所需热量相匹配,而且给煤率能够快速响应给煤指令的变化。实际应用中达到了满意的控制效果。

The coal control system on 1 000 MW unit in Chaozhou Power is fully introduced in this paper. This paper gave a detailed description of the CS2024 type for coal feeder control system and measurement and control of coal rate,listed actual using of the CS2024 type for coal machine calibration steps, in order to ensure the accuracy of coal. In part of coal feeder control,the DCS function was used to realize interlock and protection of coal control sys- tem. The automatic logical adjustment of coal was elaborated which could make sure the amount of coal feed matches up to the heats air for fuel burning by boiler, as well as the coal rate could respond quickly to changes of the coal feed command. The satisfactory control effect had achieved in the practical application.