Electric power asset heterogeneous data fusion method based on knowledge graph

A technology of power assets and knowledge graph, applied in the fields of unstructured text data retrieval, data processing applications, special data processing applications, etc. Data source redundant information and other issues, to achieve good maintainability and scalability, to achieve the effect of comprehensive and accurate integration

Inactive Publication Date: 2020-01-10
STATE GRID CORP OF CHINA +2
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

These data are difficult to share, and the information is incompatible, forming "information islands" one by one. In addition, the characteristics of complex and diverse power data, large quantity, real-time, and distribution have brought difficulties to the power data fusion work.
At present, the vast majority of data fusion research is carried out for s

Method used

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  • Electric power asset heterogeneous data fusion method based on knowledge graph
  • Electric power asset heterogeneous data fusion method based on knowledge graph
  • Electric power asset heterogeneous data fusion method based on knowledge graph

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Embodiment 1

[0071] A method for fusion of heterogeneous data of power assets based on knowledge graph, which is carried out in sequence as follows:

[0072] Step 1. Use the Protégé ontology construction tool in a top-down manner. First, refer to the State Grid CIM3.5 standard to define knowledge in the field of electric power assets, concept definitions and the relationship between concepts, and then define each basic class. Through the parent class and subclasses to define the class hierarchy, and merge all the detailed classes, and then define and constrain the object attributes and data type attributes respectively, and construct the power asset knowledge graph model, in which the basic classes are based on the "State Grid Corporation Fixed Assets The catalog is defined as 15 categories: transmission lines; power transformation equipment; power distribution lines and equipment; electricity metering equipment; communication lines and equipment; automation control equipment, information e...

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Abstract

The invention discloses an electric power asset heterogeneous data fusion method based on a knowledge graph. The method comprises the steps of firstly constructing a power asset knowledge graph model,extracting knowledge in the acquired power asset data through a power asset knowledge graph model then to achieve data fusion specifications, calculating relationships among the extracted knowledge entities by adopting a similarity comparison method based on named entity attribute relationships and an entity alignment algorithm, and performing multi-data-source knowledge fusion, the power asset data comprising structured data, semi-structured data and unstructured data. According to the design, comprehensive and accurate fusion of the multi-source heterogeneous data of the power assets is achieved, and good maintainability and expandability are achieved.

Description

technical field [0001] The invention belongs to the field of power grid heterogeneous data fusion, and in particular relates to a knowledge graph-based power asset heterogeneous data fusion method. Background technique [0002] In the power grid system, the level of power asset management is a decisive factor for the comprehensive benefits of power grid enterprises. High-level power asset management can provide scientific and rational guidance for the cost and expenditure of power grid enterprises, and can be used in all aspects of power grid system operation. Effective management and control of power assets in each stage. Power grid enterprises have attached great importance to power asset management and conducted extensive research, but there are still some problems in the process of application. In the life cycle management of power assets, all kinds of data of power assets are stored in different management systems, and it is difficult to accurately describe the attribu...

Claims

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Application Information

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IPC IPC(8): G06F16/36G06Q50/06
CPCG06Q50/06G06F16/367
Inventor 杨勇欧阳俊杜治鄢晶陈竹郑旭郑云飞熊志张籍张俊袁红霞涂雅丽
Owner STATE GRID CORP OF CHINA
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