基于多模型预测控制的火电机组深度调峰一次调频控制策略  

Primary Frequency Modulation Control Strategy in Deep Peak Load Cycling State for Thermal Power Units Based on Multi-Model Predictive Control

作　　者：殳建军[1] 崔晓波 罗凯明[4] 于国强 史毅越[1] 杨小龙 张天海 SHU Jianjun;CUI Xiaobo;LUO Kaiming;YU Guoqiang;SHI Yiyue;YANG Xiaolong;ZHANG Tianhai(Jiangsu Frontier Electric Technology Co.,Ltd.,Nanjing 211102,China;School of Energy and Power Engineering,Nanjing Institute of Technology,Nanjing 211167,China;School of Energy and Environment,Southeast University,Nanjing 210096,China;State Grid Jiangsu Electric Power Co.,Ltd.,Nanjing 210000,China)

机构地区：[1]江苏方天电力技术有限公司,南京江苏211102 [2]南京工程学院能源与动力工程学院,南京江苏211167 [3]东南大学能源与环境学院,南京江苏210096 [4]国网江苏省电力有限公司,南京江苏211167

出　　处：《锅炉技术》2020年第6期12-17,共6页Boiler Technology

摘　　要：在深度调峰状态下,火电机组的一次调频性能已发生较大变化,为了更好地发挥火电机组一次调频性能,对传统火电机组功率控制系统进行优化改进,提高功率控制系统的调节性能与鲁棒性,针对目前传统功率调节系统存在非线性以及不同工况下调节品质差异明显等问题,提出了一种基于多模型预测控制的先进一次调频控制策略。仿真结果表明:提出的先进控制策略可较好地克服被控对象非线性问题,同时调节过程稳定快速无超调,可更好地发挥深度调峰状态下的一次调频负荷余量,保证大频差状态下的频率快速回调,避免事故发生,因此具有重要意义。In deep peak load cycling state,the primary frequency modulation performance of thermal power unit has changed greatly.In order to better utilize the primary frequency modulation performance of thermal power unit,traditional control system of steam turbine is optimized to improve the its regulation performance and robustness.In order to solve problems such as nonlinearity of traditional power regulation systems and obvious differences in regulation quality under different operating conditions,an advanced primary frequency modulation control strategy is proposed based on multi-model predictive control.The simulation results show that the proposed control strategy can better overcome the nonlinear problem of the controlled object,and the adjustment process is stable,fast and without overshoot,which can better exploit the load redundancy of primary frequency modulation under deep peak load cycling and guarantee the fast frequency callback under large frequency difference to avoid accidents which is of great importance.

关 键 词：深度调峰 一次调频 多模型 预测控制 非线性 

分 类 号：TK229.2[动力工程及工程热物理—动力机械及工程]