Application of MMC‐UPFC in the 500 kV power grid of Suzhou. Issue 13 (19th January 2018)

• Record Type: Journal Article
• Authors: Li, Peng; Wang, Yiyu; Feng, Changyou; Lin, Jinjiao
• Is Part Of: Journal of engineering. Volume 2017:Issue 13(2017)
• Page Start: 2514
• Page End: 2518
• Publication Date: 2018-01-19
• Subjects: HVDC power convertors -- voltage‐source convertors -- load flow control -- voltage control -- load shedding -- reactive power control -- power grids; heavy load conditions -- transmission section -- load shedding -- reactive power control -- dynamic voltage support -- UHVDC commutation failure -- modular multilevel converters -- voltage regulation -- topology structure -- southern power grid -- unified power flow controller -- China -- Suzhou power network -- UHVDC power assumption -- ultra‐high‐voltage direct current power assumption -- power supply capacity -- MMC‐UPFC application -- voltage 500 kV; Engineering -- Periodicals; Engineering; Electronic journals; Periodicals; 620.005
• DOI: 10.1049/joe.2017.0780
• Languages: English
• ISSNs: 2051-3305

Abstract

Abstract : To solve the problem regarding the power supply capacity improving and ultra‐high‐voltage direct current (UHVDC) power assumption of 500 kV Suzhou power network in China, research on the feasibility for application of a unified power flow controller (UPFC) in 500 kV southern power grid of Suzhou is carried out. Furthermore, the scheme of the UPFC integrated and its topology structure is given, and the capacity of the UPFC is determined by system calculation. The principle for the selection of key parameters for the main equipment in the UPFC project is discussed. The effect on the power flow and voltage regulation of 500 kV Suzhou power grid is verified by simulation, which indicates that the regulating by UPFC can eliminate the overload of key transmission section as line tripped, under the heavy load condition in winter. During summer under heavy load conditions, it is beneficial to decrease the capacity of load shedding as the UHVDC bipolar is blocked. In addition, the reactive power control of the UPFC can provide the dynamic voltage support for the power grid, which reduces the probability and the time duration of the commutation failure of the UHVDC.