Abstract
In intelligent substations, the MMS Lite software package is widely used to realize station control layer network communication based on IEC61850. The protocol uses the BER coding of ASN.1, so there is more redundant information, which affects the transmission efficiency. Under the background of domestic independent control in the domestic power industry, there have been increasingly urgent demands for transforming and upgrading intelligent substations based on MMS protocol. This paper proposes a heterogeneous data fusion method for the secondary equipment of substation monitoring systems, which supports the simultaneous access and data interaction of the bay-level equipment of CMS protocol and MMS protocol. The thread synchronization mechanism is studied to avoid the avalanche data loss caused by transient failure, and improve the safety and reliability of data operation and maintenance, which further improves the support for the operation monitoring, remote access, and other services of the centralized control master station.
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