A New UPFC System in the Framework of Ubiquitous Power Internet of Things

doi:10.3969/j.issn.1000-7229.2020.01.005

Abstract

Abstract: In building ubiquitous power Internet of things, the unified power flow controller (UPFC) may be used to realize the close connection of multiple lines on the physical level. A large-scale power system transmission framework is formed by connecting multiple converters in series to multiple transmission lines, and connecting multiple parallel converters to other multiple networks. On the DC lines connecting many converters, the energy storage battery is connected in parallel as the active power support to form a new UPFC system under the framework of the power internet of things. The mathematical model of the new UPFC system is established, and the objective function is the maximum capacity of renewable energy accommodation and the minimum cost of active power transmission. The advantages of the new UPFC system in enhancing the transmission limit of active power and reducing the transmission cost of active power are verified by numerical simulation.

Key words: ubiquitous power internet of things, unified power flow controller (UPFC), converter, active power, transmission cost

CLC Number:

TM 72

ZHAO Changshu, QIU Xiaoyan, ZHAO Youlin, LI Linghao,ZHANG Kai, LIU Mengyi. A New UPFC System in the Framework of Ubiquitous Power Internet of Things[J]. Electric Power Construction, 2020, 41(1): 39-44.

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