IEC 61970 standard based common information model extension of electricity-gas-heat integrated energy system

Abstract

Power system, natural gas system, and thermal system are traditionally managed by different types of companies, resulting in information islands among different systems. In order to break the information islands phenomenon and realize the unified management of electric-gas-heat integrated energy system, this paper thoroughly analyses the composition and characteristics of the electricity-gas-heat integrated energy system and extends the common information model by using object-oriented modeling concept based on the IEC 61970 to meet the needs of integrated energy systems, such as multi-energy flow calculation, optimal scheduling, and operational control. The complete extended model of natural gas system, thermal system, coupling links and multi-energy storage systems is built. In addition, the attributes of key classes in the electricity-gas-heat integrated energy system are described, such as the classes of natural gas source, natural gas transporting unit, natural gas pipeline, natural gas load, motor-driven compressor, power-to-gas unit, power-to-heat unit, natural gas storage system, thermal storage system and hydrogen storage system. The extended common information model of electricity-gas-heat integrated energy system is built under the Rational Rose platform and an example verification is carried out to generate XML file and partial code of header file and source file in order to test the rationality of the extended common information model.