船用蒸汽排放系统动态特性分析及控制研究
Research on Dynamic Characteristics Analysis and Control of Marine Steam Discharge System
周毓金 1孙文彩 1戴山力 1张磊1
作者信息
摘要
蒸汽排放系统是船舶核动力二回路系统的重要组成部分,在保证核动力系统安全性和机动性方面发挥着重要作用.传统的船舶蒸汽排放系统针对不同的排放工况设置了多种控制逻辑,且采用简单开环顺序控制,存在控制精度低、超调量大、稳定时间长、逻辑切换频繁等问题,难以适应新型全电推进船舶对系统稳定性和安全性的更高要求.鉴于此,以船舶核动力二回路蒸汽排放系统为研究对象,采用时域法、频域法、根轨迹法等,对不同功率水平下的蒸汽排放系统动态特性进行了详细分析,根据系统动态特性研究确定了PI控制参数,设计了新的蒸汽排放控制器,通过与传统控制策略进行对比分析,新设计的控制器不仅简化了控制逻辑,且取得了更加优越的控制性能,为新型船舶的蒸汽排放系统研制提供了有益参考.
Abstract
The steam emission system is an important component of the ship's nuclear power secondary loop system,playing a crucial role in ensuring the safety and maneuverability of the nuclear power system.Traditional ship steam emission system uses mul-tiple control logics for different emission conditions and employ simple open-loop sequential control.However,this approach suffers from low control precision,large overshoot,long stability time,and frequent logic switching,making it difficult to meet the higher requirements for system stability and safety of new all-electric propulsion ship.Therefore,this study focuses on the ship's nuclear power secondary loop system emission system,using time-domain,frequency-domain,and root-locus methods to analyze the dy-namic characteristics of the steam emission system at different power levels.Based on the system's dynamic characteristics,PI con-trol parameters are determined,and a new steam emission controller is designed.Compared with traditional control strategies,the new controller not only simplifies the control logic but also achieves superior control performance,providing useful references for the development of steam emission system in new ships.
关键词
核动力装置/二回路/蒸汽排放控制系统/动态特性Key words
nuclear power device/secondary circuit/steam emission control system/dynamic characteristics引用本文复制引用
基金项目
国家部委级科研项目(2022102020)
出版年
2024
国家科技期刊平台
NSTL
万方数据