This paper first introduces the object-oriented DLMS/COSEM protocol and its characteristics, and then introduces the power information collection and management system-object-oriented interoperability data exchange protocol (DL/T698.45), which specifies the content of the master station, terminals and information transmission of the power information collection and management system. Aiming at the problem that the existing object-oriented protocol is time-consuming for terminal data collection, this paper designs a multi-source heterogeneous communication protocol that integrates the DLMS/COSEM protocol and the DL/T698.45 communication, and adds the corresponding attributes and methods in each functional module to realize the support for multi-source heterogeneous data communication in different functional modules. After that, the performance of the fused service protocols is tested using Peach fuzzy test method and adaptive genetic algorithm, combined with use case analysis. The results show that the Peach fuzzy tester proposed in this paper can shorten the test duration by 25.35% and reduce the number of test cases by 13.74%, which can effectively reduce the failure rate of test cases and make the model in this paper have a high test coverage and very good relevance. The average response time of the DLMS/COSEM-DL/T698.45 protocol is less than that of the DLMS protocol. The transmission success rate is significantly higher than that of the DLMS protocol, which shows that the design of the protocol that integrates the DLMS/COSEM protocol and the DL/T698.45 communication is more reasonable.
