电厂热力系统在线性能计算软件变量二维顺序及索引模型研究

分析在线性能计算软件在我国电厂的应用情况,把在线性能计算软件分为两类:编程式软件和组态式软件。编程式软件里的计算模型和变量值是完全被封装的,软件基本不具备扩展性。现有的组态式软件虽然具备一定的扩展性和可分析性,但是功能仍不够完善。提出在线性能计算软件变量二维计算顺序及索引模型,该模型包括三方面内容:第一,定义及构造了与计算变量和计算顺序相关的一系列集合和有序序列;第二,提出了变量二维排序算法;第三,建立了变量之间的引用和被引用关系,建立了变量二维索引图表。基于变量二维索引图表,可以方便地逐级追踪计算模型和计算变量的值,有利于增强组态软件的可分析性、扩展性和组态功能。

THE STUDY ON THE TWO-DIMENTIONAL SEQUENCE AND TABLE-INDEX MODEL OF VARIANTS IN ONLINE PERFORMANCE CALCULATION SOFTWARE

The application of online performance calculation software to domestic power plants is analyzed.The online performance calculation software is classified as programmed software and model-building software.In programmed software,its calculation model and variable values are completely encapsulated,so that it lacks expansibility.Although present model-building software bears expansibility and analysability to a certain extent,its overall functionality is still incomplete.Therefore,the online performance calculation software variable two-dimensional calculation sequence and index model is proposed.The model consists of contents from three aspects:the first is the definition and establishment of a series of aggregation and sequences related to calculating variables and calculating sequences;the second is the introduction of variable two-dimensional sorting algorithm;the third is the establishment of references among variables as well as the variable two-dimensional index chart.Based on variable two-dimensional index chart,it is quite convenient to track stage by stage the values of the calculation model and calculation variables,so that it is helpful to enhance the analyzability,expansibility and model-building functionality of the model-building software.