in hydraulic wind turbine during LVRT

 

AI Chao1,2, KONG Xiangdong1,2, YAN Guishan3, HUA Yulan4, SONG Yu3

(1.Hebei Provincial Key Laboratory of Heavy Machinery Fluid Power Transmission and Control, Yanshan

University, Qinhuangdao 066004, China; 2. Ministry of Education Key Laboratory of Advanced Forging &

Stamping Technology and Science Yanshan University, Qinhuangdao 066004, China;

3. School of Mechanical Engineering, Yanshan University, Qinhuangdao 066004, China;

4. New Song Robot & Automation Company of Shenyang, Shenyang 110000, China)

 

Abstract: In order to solve the problems of hydraulic wind turbine at low voltage ride through(LVRT), the research on transient characteristics in the main transmission during LVRT was launched. Transient model of the hydraulic main transmission was established, and cosimulation platform was built based on AMESim and Matlab/Simulink simulation technology. Effects of different conditions and pipeline length on the laws of the transient characteristics in the main transmission were analysied in a simulation study. Simulation results show that enhancing the pump speed is conducive to rapid response of the system, and shortening the length of the pipeline is conducive to rapid adjustment of the power generation. Research work provides a theoretical basis and advanced technology for the control of LVRT and optimizing hydraulic lines in the main transmission system.

Key words: hydraulic wind turbine; main transmission; transient characteristics; low voltage ride through(LVRT)