Communication Requirements for a Hybrid VSC Based HVDC/AC Transmission Networks State Estimation

Motaz Ayiad, Emily Maggioli, Helder Leite and Hugo Martins
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Motaz Ayiad: Efacec Automation, Grid Management Division, 4471-907 Porto, Portugal
Emily Maggioli: Faculty of Engineering (FEUP), University of Porto, 4200-465 Porto, Portugal
Helder Leite: Faculty of Engineering (FEUP), University of Porto, 4200-465 Porto, Portugal
Hugo Martins: Efacec Automation, Grid Management Division, 4471-907 Porto, Portugal

Energies, 2021, vol. 14, issue 4, 1-25

Abstract: The communication infrastructure of the modern Supervisory, Control and Data Acquisition (SCADA) system continues to enlarge, as hybrid High Voltage Direct Current (HVDC)/Alternating Current (AC) networks emerge. A centralized SCADA faces challenges to meet the time requirements of the two different power networks topologies, such as employing the SCADA toolboxes for both grids. This paper presents the modern communication infrastructure and the time requirements of a centralized SCADA for hybrid HVDC/AC network. In addition, a case study of a complete cycle for a unified Weighted Least Squares (WLS) state estimation is tested on a hybrid HVDC/AC transmission network, based on Voltage Source Converter (VSC). The cycle estimates the elapsed times from the sensors up to the SCADA side, including the data acquisition and the WLS processing times. The case study is carried out on the Cigre B4 DC test case network with 43 virtual Remote Terminal Unit (RTU)s installed and 10 data concentrators, all connected through a fiber-based communication network. It is concluded that the time requirements can be fulfilled for a hybrid HVDC/AC network.

Keywords: state estimation; communication; network; HVDC; AC/DC; transmission; time (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
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