System Static Safety Analysis Under Multi-UHVDC Hierarchically Infeed Mode

Author

Ye Guan-hao ; Zhang Yan

Author_Institution

Sch. Of Electron. Inf. & Electr. Eng., Shanghai Jiao Tong Univ., Shanghai, China

fYear

2015

fDate

10-12 Feb. 2015

Firstpage

1

Lastpage

8

Abstract

Based on the concept of “Multi-Infeed Short Circuit Ratio” (MISCR) CIGRE proposed, the paper focuses on analysing static security of UHV AC-DC hybrid system under three infeed modes of 2 UHVDC (±800 kV) lines: 2 UHVDC lines completely feeding in UHVAC (1000kV) system, completely feeding in EHVAC (500kV) system and feeding in these two levels of AC system hierarchically. Firstly, the value of “MISCR” is calculated respectively under these infeed modes. Secondly, constant voltage of AC system which UHVDC lines feed in is analysed, the relationship between constant voltage, “MISCR” and different infeed modes is discussed. Thirdly, Self-organized method is used to find limit DC power under different infeed modes. Finally, some China sectional power grid where UHVDC lines feed in is taken as an example, simulation is carried out and theories proposed get verified.

Keywords

HVDC power transmission; safety; AC system; CIGRE; China sectional power grid; EHVAC system; MISCR; constant voltage; multi-UHVDC hierarchically infeed mode; multiinfeed short circuit ratio; self-organized method; static security; system static safety analysis; Constant voltage; Infeed mode; Limit power; MISCR; UHV;

fLanguage

English

Publisher

iet

Conference_Titel

AC and DC Power Transmission, 11th IET International Conference on

Conference_Location

Birmingham

Print_ISBN

978-1-84919-982-7

Type

conf

DOI

10.1049/cp.2015.0098

Filename

7140580