Research on the Transient Power Characteristics of the Inverter for Yun-Guang UHVDC

Chengjun Xia^1*, Haiwen Lan¹, Kun Men², Guokai Liang¹

¹School of Electric Power, South China University of Technology, Guangzhou, China.
²Electric Power Research Institute of CSG, China Southern Power Grid, Guangzhou, China.

DOI: 10.4236/jpee.2014.29025                

Abstract

During the transient period of large-disturbance of the received power grid, the power features of the inverter are of great important for the security and stability of the system. The research before is defective in that the constant control mode assumption and the rough HVDC simulation model. The paper establishes the PSCAD/EMTDC model for Yun-Guang EHVDC system, and analysis the transient real power and the reactive power of the inverter. With the analysis of logic for control mode, the author also introduces the physical processes of the peak of the reactive power. At last, the paper puts forward several strategies for suppressing the peak of the dynamic reactive power and real power recovery acceleration.

Keywords

UHVDC, Inverter, Transient Power Features

Conflicts of Interest

The authors declare no conflicts of interest.

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