摘要： 针对逻辑模型在查询和存储方面的不足，定义与其具有一致表示能力的关系模型，并将逻辑模型中以句子形式表示的逻辑约束转化为针对关系模型中逻辑关系的势的约束。根据模型的访问，以IEC61970所采用的数据访问接口DAF为例，在上述关系模型中给出基于关系代数的实现。研究结果表明，通过选择合理的关系模型，可以在保持逻辑模型丰富的表达能力的基础上，利用关系代数提高模型访问的效率，同时保证约束判定的有效性。

关键词: 关系模型, 公用信息模型, 模型验证, 模型访问, 模型表示

Abstract: Corresponding to the lack in abilities of storage and query, a relation scheme, which owns the identical representation with CIM logical model, is defined. Those constraints in logical model, which take the form of logical sentences, are transformed into constraints on the cardinal of some related logical relations. With respects to the model access, the DAF interface, which is the basic CIS interface of IEC61970, is realized by relation algebra as an example. Research results show that the efficiencies of query and availability of constraint verification can be acquired by a well choosing relation scheme, while the rich representative ability of logical model is still reserved.

Key words: relation model, common information model, model validation, model access, model representation

中图分类号: 

• TP311