Systematic method for improving network sampling reliability of transformer station

Abstract

The invention relates to a systematic method for improving network sampling reliability of a transformer station. The method comprises the following steps: (1) high-precision synchronous timing of a sampling step; (2) uniformly-spaced transmission of a sample sending step; (3) optimally designing a network transmission step; (4) and resampling received sample data by a sample receiving device, uniformly processing the sample data. The method can consider uniformly from a systematic level, and solve problems of timing synchronization of network sampling, network transmission delay, and data processing when a message is lost or delayed. The method not only can improve reliability of network sampling, effectively improve precision of sampling synchronization and reduce network transmission delay, but also can effectively response to problems of handling protecting devices, and measuring and controlling devices in a condition that the message is lost or delayed. The method can effectively guide construction of the transformer station, and promote application of the network sampling technology in the transformer stations.

Description

technical field [0001] The invention relates to a system method in the field of electric power automation, in particular to a system method for improving the reliability of substation network sampling. Background technique [0002] The use of the IEC61850 standard promotes the development of process-level bus technology, and promotes the development of substation network communication from serial port connection and field bus to Ethernet transmission, which greatly improves the overall level of substation communication. Substation data sharing can effectively reduce the complex cable connection of substations, which not only helps to simplify the structure of the whole substation, but also effectively reduces the construction cost of substations. More importantly, it can promote the development of advanced application functions of substations and further improve the overall level of substations. [0003] In the digital substation construction stage, due to the low technical ...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems existing in the current substation internal network sampling application, the present invention provides a system method for improving the reliability of substation network sampling, which can solve the time synchronization problem of network sampling, the problem of network transmission delay, and the problem of message loss or delay The post-data processing problem can not only improve the reliability of network sampling, effectively improve sampling synchronization accuracy and reduce network transmission delay, but also effectively deal with the processing problems of protection and measurement and control devices in the case of lost or delayed sampling messages. It can effectively guide the construction of substations and promote the application of network sampling technology in substations

Images