基于混合结构模型的电厂厂级监控信息系统

PLANT LEVEL SUPERVISORY INFORMATION SYSTEM IN POWER PLANT BASED ON THE MIXED CONSTRUCTION MODEL

结合客户/服务器(C/S)体系结构和浏览器/服务器(B/S)体系结构的特点,提出了“内外有别”和“查改有别”两种基于混合结构的模型来构建发电厂厂级监控信息系统(SIS),该混合结构模型体现了C/S和B/S体系结构的共同优点,网络效率较高、系统安全稳定,保证了复杂功能的交互性和一般功能的易用与统一性。在其技术实现上,C/S结构在解决服务器和客户端的交互方式上采用Socket网络通信方式或分布对象技术;B/S结构采用新颖的ActiveX组件应用与ASP应用相结合的Web应用方式加以实现。并针对特殊情况(如事故时)又提出了一种基于Web和广播的电厂生产实时信息发布模式,直接由通信网关作为服务器进行广播。该混合结构模型虽然是针对电厂实现的,但其设计思想和结构实现技术具有一定的通用性。

By analyzing the Client Server(C/S) structure and Browser/Server (B/S) structure, two models of the Supervisory Information system (SIS) of plant level in power plant based on the mixed construction are put forward, including 'difference between inside and outside of enterprise' model and 'difference between query and modification' model. The common advantages of C/S and B/S structure are reflected in the models, such as the high efficiency of network, the high safety and stability of system, the great interaction of complex functions, the convenience of general functions and so on. In terms of the technological realization of models, the socket network communication method and the distributed object technology are used for the data communication between servers and clients of C/S structure . The ActiveX components and Active Server Pages (ASP) applications method is adopted in the B/S structure. At the same time, for the abnormal situation a kind of spreading mode of real information based on the web and broadcast is proposed to solve the problem of network jam. Although the models are developed for the power plant, they can be popularized in terms of the design concept and the technique of structural implementation.