Construction of Substation Engineering Design Knowledge Graph Based on “Ontology Seven-step Method”
Wei Jiang, Yali Wang, Junhui Hu, Lan Guan, Zhanwei Zhu · 2021 4th International Conference on Energy, Electrical and Power Engineering (CEEPE) · 2021
A great deal of substation engineering projects data and knowledge has been accumulated in the field of electric power survey and design. However, the lack of knowledge mining methods hinders its value creation. The knowledge management in the field hence needs a new mode. Knowledge graph has been widely adopted in some vertical industries recently. Since its schema-less nature, the knowledge graph could be constructed flexibly. It describes the complex relations between entities and concepts in the objective world. This study proposes the construction of substation engineering design domain knowledge graph. Ontology construction in this study is based on “ontology seven-step method” and in a top-down approach. Thematic clustering is considered to guide to construct ontology hierarchy manually. Concepts of substation engineering design are stored in the ontology layer, and entities from engineering projects information are in the instance layer. In this way, the structured knowledge can accelerate knowledge retrieving and assist in decision-making. Moreover, the tacit knowledge inferring can also promote knowledge innovation.