石电330 MW机组协调控制系统优化

提高发电机协调控制系统的负荷响应速度、减小动态偏差和静态偏差,以满足电网调度对自动发电控制（AGC）机组负荷调整范围的新规定,介绍石嘴山发电公司3号机组协调控制系统的优化过程.采用以直接能量平衡（DEB）为基础的协调控制调整系统结构和参数,采用具有超前-滞后环节的动态补偿器实现前馈控制,并增加负荷变动期间目标负荷对负荷指令的动态补偿环节。试验表明：该方案在负荷变化的初始阶段加速了机组的能量平衡进程,保证了主蒸汽压力的相对稳定,该控制方案的优化措施合理可行,有效地提高了机组的负荷响应能力,改善了AGC方式下机组运行的平稳性.

Optimization of coordinated control system in Shizuishan Power Plant 330 MW unit

In order to improve the load response speed of generator coordinated control system （CCS）, reduce the dynamic ＆ static deviation and meet the new regulation of load adjustment range for auto generation control （AGC） unit, the Unit 3 CCS Optimization process is presented in this paper. The direct energy balance （DEB） coordinated control is adapted to adjust the system structure and parameters. The advance-lag dynamic compensator is applied to feed-forward control. And the dynamic compensation link of load instruction with the load changing is added. Test results show that the energy process is fast balanced in the initial stage of load changing, the relative stability of main steam pressure is ensured, the optimization control scheme is reasonable and feasible, the unit＇s load response ability is effectively enhanced, and the unit operation stationarity is improved under the AGC mode.