Title :
Digital Simulation of Variable Frequency Transformers for Asynchronous Interconnection in Power System
Author :
Chen, Gesong ; Zhou, Xiaoxin
Author_Institution :
Power Syst. Dept., CEPRI, Beijing
Abstract :
Variable frequency transformers (VFT) is a new technology for asynchronous power system interconnection, which is functionally like back-to-back HVDC device. A digital simulation model of VFT and its control system are formed with electromagnetic transient program (EMTP), and a series of studies on VFT had been accomplished with these models, including VFT energization, speed regulation of rotor, synchronizing, ramp power control, step power control, voltage dependent power limit control, power supply for an isolated passive system, reactive power balance and fault analysis. The response characteristics of VFT under various conditions are discussed, and its advantages are also proved
Keywords :
EMTP; HVDC power convertors; power system control; power system interconnection; power system simulation; power transformers; VFT energization; VFT response characteristics; asynchronous power system interconnection; back-to-back HVDC device; digital simulation model; electromagnetic transient program; fault analysis; isolated passive system; power supply; ramp power control; reactive power balance; rotor; speed regulation; step power control; variable frequency transformer; voltage dependent power limit control; Digital simulation; EMTP; Electromagnetic modeling; Frequency; Power control; Power system interconnection; Power system modeling; Power system simulation; Transformers; Voltage control; Asynchronous Power System; B-to-B HVDC; Controlled Power Flow; EMTP; Interconnection; Variable Frequency Transformers;
Conference_Titel :
Transmission and Distribution Conference and Exhibition: Asia and Pacific, 2005 IEEE/PES
Conference_Location :
Dalian
Print_ISBN :
0-7803-9114-4
DOI :
10.1109/TDC.2005.1546991
