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Open AccessArticle

A Priority-Based Synchronous Phasor Transmission Protocol Extension Method for the Active Distribution Network

1
School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009, China
2
Electric Power Research Institute, State Grid Shanghai Municipal Electric Power Company, Shanghai 200437, China
*
Author to whom correspondence should be addressed.
Appl. Sci. 2019, 9(10), 2135; https://doi.org/10.3390/app9102135
Received: 17 April 2019 / Revised: 15 May 2019 / Accepted: 20 May 2019 / Published: 24 May 2019
(This article belongs to the Special Issue Energy Management and Smart Grids)
With the advancement of active distribution network construction, to solve the shortcomings of the existing distribution network technology in distribution network perception and control, the relevant technologies of the Wide Area Measurement System (WAMS) in the transmission network have attracted more attention in terms of their usage in the distribution network. Micro Multifunction Phasor Measurement Unit (μMPMU), as an example, is being gradually utilized in the distribution network. However, the existing synchronous phasor transmission protocol is mainly designed for the transmission network, which requires an extension to meet the communication requirements to be directly used in the distribution network. In this work, the requirements of active distribution network communication are analyzed, and trade-offs between National Standard of the People’s Republic of China/Recommended (GB/T) 26865.2-2011 and International Electro technical Commission (IEC) 60870-5-101/104 protocol are compared. An extension method of the communication protocol is proposed, with the benefits of the prioritized transmission of important data, expanded remote control function of μMPMU, increased types of offline files, and reduced amount of network communication and data storage. The method is built upon the existing GB/T 26865.2-2011 protocol, and refers to the Application Service Data Unit (ASDU) of IEC 60870-5-101/104 to add an application extension frame. Application extension frames are used to transmit telemetry data, telesignalization, partial commands, and partial offline files. Finally, an experimental environment is set up, which includes a phasor measurement unit (PMU) Emulator, distribution network phasor data concentrator (PDC), and main station emulator to implement the standard GB/T 26865.2-2011 protocol and extension protocol. The feasibility and effectiveness of the method are confirmed by the superior performance of the extended protocol compared with the standard protocol. View Full-Text
Keywords: distribution network; WAMS; protocol extension; priority distribution network; WAMS; protocol extension; priority
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Tao, W.; Ma, M.; Ding, M.; Xie, W.; Fang, C. A Priority-Based Synchronous Phasor Transmission Protocol Extension Method for the Active Distribution Network. Appl. Sci. 2019, 9, 2135.

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