摘要
随着能源短缺现象的加剧,微型水力发电越来越被人们重视。研究了整个微型水力发电机组系统,首先分析了引水系统、水轮机和并联PID的数学模型;接着建立了相对应的仿真模型,励磁控制系统的模型,整个微型水力发电机组的模型;最后采用Matlab仿真软件,在动态负载条件下对该微型水力发电机组进行仿真,分析了负载和水头变化对机械功率、转子速度、电压和频率的影响。仿真结果表明,所建立的系统动态特性模型符合工程实际,满足系统的稳定性要求。
To cope with energy shortage, more and more attentions are paid to micro-hydropower generation. For this reason, a micro-hydropower generation system is entirely analyzed. Firstly, the mathematical models for water diversion system, hydraulic turbine and parallel PID controller are researched; then simulation models corresponding to these mathematical models, and the simulation models of excitation control system as well as the simulation model of the whole micro-hydropower generation system are built; finally, by use of Matlab software the micro-hydropower generation system under dynamic load condition is simulated, and the impacts of variation of load and water head on mechanical power, rotor speed, voltage and frequency are analyzed. Simulation results show that the built dynamic characteristic model of micro-hydropower generation system is conform to engineering practice and can meet the demand of system stability.
出处
《电网技术》
EI
CSCD
北大核心
2012年第2期147-152,共6页
Power System Technology
