超临界机组宽负荷调频调峰控制关键技术及应用

Key Technology and Application of Wide Load Frequency Modulation and Peak Shaving Control for Supercritical Units

为了使超临界机组能够进行超低负荷运行,具备宽负荷快速调节能力,对机组的控制技术进行创新,开发了新型控制系统。基于智能控制技术,设计使各控制子系统深度协调、精准配合调节的先进协调控制系统,确保机组在不同负荷段响应调峰负荷指令时的快速性和稳定性;将基于不同负荷段调速系统的多模型预测控制和PID控制相结合用于一次调频控制,确保机组在任意负荷段运行时,一次调频的性能指标都能满足要求。

In order to enable the supercritical unit operating at ultra-low load and to have the ability of rapid adjustment of wide load,the control technology of the unit is innovated and a new control system is developed.Based on intelligent control technology,an advanced coordinated control system is designed to make each sub-control system deeply coordinate and accurately cooperate with the regulation,so as to ensure the unit's fast response to the peak load command in different load sections speed and stability.The combination of multi model predictive control and PID control based on different load sections is applied to primary frequency regulation control,which ensures that the performance index of primary frequency regulation can meet the requirements when the unit operates in any load section.