Analysis of Low-Frequency Oscillation in Electric Railways Based on Small-Signal Modeling of Vehicle-Grid System in dq Frame

2015 ◽  
Vol 30 (9) ◽  
pp. 5318-5330 ◽  
Author(s):  
Hui Wang ◽  
Wu Mingli ◽  
Juanjuan Sun
Keyword(s):  
Low Frequency ◽  
Small Signal ◽  
Grid System ◽  
Signal Modeling ◽  
Frequency Oscillation ◽  
Low Frequency Oscillation ◽  
Small Signal Modeling

Low-Frequency Small-Signal Modeling of Interconnected AC Microgrids

2020 ◽  
pp. 1-1
Author(s):  
Mobin Naderi ◽  
Qobad Shafiee ◽  
Frede Blaabjerg ◽  
Hassan Bevrani
Keyword(s):  
Low Frequency ◽  
Small Signal ◽  
Signal Modeling ◽  
Small Signal Modeling

Small-Signal Modeling of Discharge Lamps Through Step Response and Its Application to Low-Frequency Square-Waveform Electronic Ballasts

2007 ◽  
Vol 22 (3) ◽  
pp. 744-752 ◽  
Author(s):  
J.M. Alonso ◽  
M.A. Dalla-Costa ◽  
J. Cardesin ◽  
J.A. Martin-Ramos ◽  
J. Garcia-Garcia
Keyword(s):  
Low Frequency ◽  
Step Response ◽  
Small Signal ◽  
Signal Modeling ◽  
Small Signal Modeling

Modal Research on the Low-Frequency Oscillation of AC/DC System with DFIG-Based Wind Farms

2014 ◽  
Vol 672-674 ◽  
pp. 331-336
Author(s):  
Jing Biao Wang ◽  
Xi Wang Abuduwayiti ◽  
Qin Chao ◽  
Qing Luo
Keyword(s):  
Low Frequency ◽  
Wind Farms ◽  
Small Signal ◽  
Small Signal Stability ◽  
Frequency Oscillation ◽  
Low Frequency Oscillation ◽  
Dc System ◽  
Signal Stability ◽  
Oscillation Modes ◽  
Power Dispatching

Low-frequency oscillation characteristics of AC / DC system with DFIG-based wind farms were studied. Detailed mathematical pure AC and AC / DC system model were established by considering the effects of doubly-fed wind turbine model and DC transmission dynamic model to do small signal stability analysis. The computed results of small signal stability of DFIG-based wind farms integrating pure AC CEPRI36 nodes system or with DC transmission that operated in four connection modes including bipolar neutral grounding at both ends mode, monopole ground return mode, monopole metallic return mode , monopole and two parallel conductor mode with earth return were investigated by using modal analysis method. Then, the characteristics of local oscillation modes and inter-area oscillation modes were respectively analyzed under the two operation modes of the wind farm participating active power dispatching and reactive power dispatching and consequently some new conclusions were drawn.

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