高精度母线防火检测系统研究与性能分析

发布时间：2018-09-03 18:16

【摘要】：近年来,新发布的建筑工程规范对现代化建筑,特别是高层建筑的配电用母线干线系统提出了防火和耐火的技术指标。与此同时,随着工艺技术的进步以及新型材料的不断研制开发,国内外对主流输配电成套设备----母线槽提出了更高的性能指标要求。国家中低压配电设备监督检验中心隶属于镇江市产品质量监督检验中心,作为低压成套产品的指定实验室,为给防火耐火类配电产品提供优质的检验服务,从而研制开发了本文中的母线防火耐火检测系统。此系统的设备制造指导标准为国家推荐性方法标准GB/T9978.1-2008《建筑构件耐火试验方法第1部分通用要求》,其采标于国际标准ISO834-1:1999,并在此基础上进行了修订。母线防火耐火检测系统以工业燃气炉温度场为被控对象,通过对炉膛容积及形状、燃烧装置分布、炉内压力控制、燃料供给控制等因素的综合分析,提出了完整的燃气炉温控设计方案。此检验项目采用西门子S7-300系列PLC作为设备核心,构建了由燃烧控制、温度控制、动力控制、连锁保护控制组成的控制系统。上位机监控软件采用组态王作为人机交互开发平台,实现了参数设定、压力温度实时监控、故障报警、记录查询、报表生成等功能。系统中高精度温度控制器设计为此设备的关键部分,采用差分优化算法和滑模变结构控制算法相结合的优化策略,经过MATLAB模型仿真证明,此优化策略与基于传统PID的温度控制系统相比,前者响应时间更快,调节时间更短,超调量更小,系统运行过程中实时温度能够更好的拟合于标准温度曲线。在系统设备完成搭建和基本安装后,对此测试平台进行试验测试,以不同截面积、不同材质的母线在水平和垂直两个工位的测试结果进行分析,装置能满足样件安装安全可靠、检验流程操作简便、温度及压力控制精度高等要求。该燃烧控制系统自投入运行以来,实际运行结果表明,系统运行稳定性高,可操作性好、燃料充分燃烧率高、温度场均匀且可控性强,节省了检测成本,提高了检验检测的工作能效,在带来检测经济效益的同时也在检验检测行业内产生了一定的影响力。
[Abstract]:In recent years, the newly issued building engineering code has put forward the technical index of fire resistance and fire resistance to the distribution busbar trunk system for modern buildings, especially for high-rise buildings. At the same time, with the progress of technology and development of new materials, the mainstream transmission and distribution complete sets of equipment-busbar has been put forward higher performance requirements at home and abroad. The State Center for Supervision and Inspection of medium and low Voltage Distribution equipment is attached to the Zhenjiang City Product quality Supervision and Inspection Center. As a designated laboratory for low-voltage complete sets of products, it provides high-quality inspection services for fire-resistant distribution products. Thus, the busbar fire-proof detection system is developed in this paper. The equipment manufacturing guidance standard of this system is the national recommended method standard GB/T9978.1-2008, part 1 general requirements of fire test method for building components, which is adopted and revised according to the international standard ISO834-1:1999,. Taking the temperature field of industrial gas furnace as the controlled object, the busbar fire resistance detection system is analyzed comprehensively through the comprehensive analysis of furnace volume and shape, combustion device distribution, furnace pressure control, fuel supply control and so on. A complete design scheme of gas furnace temperature control is put forward. Siemens S7-300 series PLC is used as the core of this inspection project, and a control system composed of combustion control, temperature control, power control and chain protection control is constructed. The upper computer monitoring software uses Kingview as the man-machine interactive development platform to realize the functions of parameter setting, real-time monitoring of pressure and temperature, fault alarm, record and query, report form generation and so on. The key part of the system is designed with high precision temperature controller. The optimization strategy combining differential optimization algorithm and sliding mode variable structure control algorithm is adopted, and the simulation results of MATLAB model prove that, Compared with the traditional temperature control system based on PID, this optimization strategy has the advantages of faster response time, shorter adjustment time and smaller overshoot. The real-time temperature of the system can be fitted to the standard temperature curve better. After the system equipment has been built and installed, the test platform is tested, and the test results of different cross sections and different materials are analyzed in both horizontal and vertical stations. The device can meet the safety and reliability of the installation of the samples. The inspection procedure is easy to operate and the precision of temperature and pressure control is high. Since the combustion control system was put into operation, the actual operation results show that the system has high operation stability, good maneuverability, high fuel full combustion rate, uniform temperature field and strong controllability, thus saving detection cost. The efficiency of inspection and detection is improved, and the economic benefit is also brought about.
【学位授予单位】：江苏大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TU85;TU892

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