Information retrieval of data and state of distribution management based on metadata

The development of information platform for distribution application, based on Common Information Model (CIM) and Utility Integration Bus (UIB) of IEC61970/IEC61968 series standards, enabled information exchanging and sharing between heterogeneous systems. However, how to acquire data and state for system analysis and decision making quickly and easily from massive data and heterogeneous systems, which is called information retrieval of data and state in this paper, is still an urgent problem. In order to solve this problem, metadata theories are applied on design of searching engine based on CIM/UIB for distribution information resources, and a scheme on information retrieval of data and state, which can easily get time depended and topology depended data for distribution application from heterogeneous systems, is proposed in this paper. (6 pages)