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在分析法国阿尔斯通MICROREC电调系统的基础上,详细地分析了330MW机组智能协调控制系统.该系统在国内首先解决了电调系统同CCS的接口问题,并成功地利用非线性补偿方法解决了原电调系统在汽机调节压力的方式下存在的系统不稳定问题.考虑到被控对象存在着时变性、未建模动态以及不确定干扰等因素,系统中综合应用了基于规则的控制器参数自调整、基于规则的智能控制以及断续连续混合控制等方法,有效地提高了协调控制系统的动态以及稳态性能.运行结果表明,该系统可以在50%～100%的负荷范围内自动调整机组负荷,且系统的动态、稳态性能指标满足电网AGC的运行要求.
Based on the analysis of Alstom MICROREC ESC system in France, the intelligent coordinated control system of 330MW unit is analyzed in detail.The system solves the interface problem between ESC and CCS in China, and successfully uses the nonlinear compensation method The instability problem of the original electric control system in the way of adjusting the pressure of the steam turbine is considered.According to the time varying nature of the controlled object, the unmodeled dynamics and uncertainties, the system integrates the rules-based controller Parameter self-tuning, rule-based intelligent control and intermittent continuous hybrid control, which effectively improve the dynamic and steady performance of the coordinated control system.Experimental results show that the system can be automatically operated within the load range of 50% ~ 100% Adjust the unit load, and the system’s dynamic, steady-state performance indicators to meet the grid AGC operating requirements.