摘要
在微型燃气轮机和永磁同步发电机基础上建立了微型燃气轮机系统模型,在整流器侧采用电压外环-电流内环双环控制方式对整流部分进行控制,在逆变器侧提出了P-Q控制策略和V-f控制策略,分别运用于微电网并网运行和孤网运行的两种模式,设计出了相应的控制系统。利用电力系统分析软件PSCAD/EMTDC分别对两种运行模式进行仿真,仿真结果表明:在并网运行时,微型燃气轮机并网逆变系统能够快速跟踪给定参考功率,实现了系统的并网P-Q解耦控制;在孤网运行时,微型燃气轮机能够快速响应负荷功率的变化,维持负荷电压稳定,说明了该模型具有较好的负荷跟随能力,能够承受负荷变化时的电压冲击。
In this paper,a micro-turbine generation system model is built based on the micro-turbine and permanent magnet synchronous generator.The double-loop control mode of ASR and ACR is applied at rectifier side,and P-Q and V-f control strategies are used in grid-connected and islanded operation modes of micro-turbine at inverter side.Then corresponding control system is designed.The two operation modes are simulated by using power system analysis software PSCAD / EMTDC.The simulation results show that the inverter can rapidly track specified reference power to realize P-Q decoupling control in grid-connected operation mode,and micro-turbine can rapidly respond to load power to keep voltage stability in islanded operation mode,which illustrates the model has better load tracking ability that can withstand impact on voltage when load changes.
出处
《现代电力》
2010年第5期72-75,共4页
Modern Electric Power
