船舶发电用三轴燃气轮机控制仿真研究  

Simulation Study of Marine Three-Shaft Gas Turbine Controlling for Power Generation

作　　者：余又红[1,2] 邬健[1,2] 贺星[1,2] 

机构地区：[1]海军工程大学舰船动力工程军队重点实验室,湖北武汉430033 [2]海军工程大学动力工程学院,湖北武汉430033

出　　处：《计算机仿真》2016年第5期10-14,共5页Computer Simulation

摘　　要：针对考虑燃气轮机的高度非线性,由于综合电力推进船舶电力负荷变化范围大且频繁的特点,造成电力系统稳定性差。为满足综合电力推进系统对发电用燃气轮机的控制要求,提出了一种采用放气控制和带预估油量的PID燃油量控制相结合的控制方法;首先,在原有压气机防喘放气的基础上增加动力涡轮前放气控制,来保证燃气轮机突变负荷控制满足要求;再借鉴增量式PID结构,提出带预估燃油前馈的改进控制算法,以缩短稳定时间。并建立了船舶发电用三轴燃气轮机控制数学模型,利用MATLAB/SIUMLINK平台建立了仿真模型,并对发电用三轴燃气轮机进行仿真。结果表明,用改进控制方法,有效的减小了机组突变负荷时的瞬态调速率,提高了稳定性。Considered the high nonlinear of gas turbine and the large and frequent change range of integrated electric propulsion ship power load,A kind of control method combined bleeding control with PID fuel quantity control including fuel estimation was proposed based on the requirements of three shaft gas turbine for shipboard power system.Firstly,power turbine bleed control model was increased for ensuring gas turbine load sudden change control meet demand.Then,based on incremental PID structure,an improved control algorithm with feedforward estimated fuel was study for shorten stable time.The mathematics model of marine three-shaft gas turbine controlling for power generation was built.Based on MATLAB/SIMULINK,the simulation model was established.The simulation experiment results showed that,adopting this control method,the stable time of load shedding was 10.26 s,the transient adjustable rate was 5.57%,and the stable time and transient adjustable rate were effectively reduced when the unit load changed suddenly.

关 键 词：三轴燃气轮机 仿真 发电 放气控制 

分 类 号：TK472[动力工程及工程热物理—动力机械及工程] TP391.9[自动化与计算机技术—计算机应用技术]