基于Hamilton能量理论的含STATCOM的非线性控制器设计
Design of nonlinear controller of STATCOM based on Hamilton energy theory
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摘要: 针对含有静止同步补偿器(STATCOM)的单机无穷大系统,对其同步发电机建立实用的数学模型.从能量的观点出发,应用能量函数理论构造Hamilton能量函数,设计了STATCOM接入点电压与发电机励磁非线性控制器.该控制器直接使用系统能量作为储存函数,在平息系统扰动能力和快速稳定性上比其他常规控制器的控制性能优越.设计中完整地保留了系统的非线性控制结构,不需要线性化处理,比各种线性化设计方法具有更好的调节能力和鲁棒性.仿真结果表明,该控制器在系统遭受三相短路故障的情况下,能够比常规PID控制更有效地抑制干扰,更快地满足发电机励磁与STATCOM接入点电压的暂态稳定性.
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关键词:
- 静止同步补偿器 /
- Hamilton能量函数 /
- 单机无穷大系统 /
- 非线性控制
Abstract: The practical mathematic model of synchronous generator was established in the static synchronous compensator (STATCOM) of single machine infinite bus power system.Based on Hamilton energy theory,the new nonlinear controller was designed between the STATCOM which was installed in bus voltage of system and synchronous machine excitation.This controller directly uses the energy as the storage function.Compared with other nonlinear controllers,this controller has the advantage of the fast stability and the capability of quelling the disturbance.Since the nonlinear control structure retains all in this design,it does not need the linearization.The proposed STATCOM controller is more robust than linear control method.The simulation results showed that the proposed controller could faster meet generator excitation and STATCOM access point voltage transient stability than conventional PID control under the subjection to the three-phase short circuit fault. -
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