Open AccessNew method to analyse delay of DDS and MMS in substation communication
Author(s) -
Fang Shuhua,
Li Zhongjie,
Huang Lei
Publication year - 2020
Publication title -
iet communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.355
H-Index - 62
eISSN - 1751-8636
pISSN - 1751-8628
DOI - 10.1049/iet-com.2019.0952
Subject(s) - computer science , reliability (semiconductor) , transmission delay , service (business) , process (computing) , telecommunications network , embedded system , transmission (telecommunications) , reliability engineering , computer network , real time computing , telecommunications , operating system , engineering , power (physics) , physics , economy , quantum mechanics , economics
As the standard specification for substation, IEC61850 utilises the abstract communication service interface to map to the manufacturing message specification (MMS) to communicate between the substation level and the bay level. The conventional MMS adopts the client/server model, which results in a relatively large transmission delay. In order to solve this problem, the data distribution service (DDS) is used to replace MMS for its excellent reliability and timeliness. However, the communication law and mechanism of DDS have not been known which result in the insufficient application of DDS. An end‐to‐end (ETE) delay method is proposed to divide the communication process into different parts according to the sequence in time and analyse the ETE delay of each part. By this method, the delay law and difference of DDS and MMS are analysed and summarised. The simulation results by the optimised network engineering tool software validate that DDS has a smaller delay than MMS. Therefore, DDS can better meet the timeliness of intelligent substation.