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Fast synchronization of distributed generators with power grid under transient conditions using hybrid optimization algorithm
Optimal Control Applications and Methods ( IF 2.0 ) Pub Date : 2020-12-17 , DOI: 10.1002/oca.2697
Alwin Vinifred Christopher 1 , Ramesh Rengaswamy 2
Affiliation  

The integration of nonrenewable and renewable energy resources is growing rapidly due to energy demand and smart grid technologies. In power grids, the performance of synchronization is reduced by some issues such as frequency instability, voltage distortion, and voltage unbalance. This work presents the fast synchronization of the PV grid‐connected system utilized the hybrid optimized proportional resonant (PR) controller under transient condition. The proposed system is designed and controlled by the optimized PR controller strategy on stationary reference frame control. The AC voltage is switched into the AC grid voltage, and error can occur in the difference between the phase reference and measured value. So the current controller of the PR controller is considering the effects of harmonics. The controller is properly tuned by the hybrid algorithm of killer whale optimization (KWO) and the grasshopper optimization algorithm to reduce the harmonics. The synchronization reduces the phase angle, voltage, and frequency between the generator outcomes. The performance of a PV based optimized PR controller controlled the voltage source inverter to achieve the optimal signal of fast synchronization. The effect of total harmonic distortion transient response is improved by the well‐designed PR control parameters based LC filter. The proposed system is implemented in MATLAB/Simulink platform. The robustness of the system is compared with traditional controllers of the proportional integral derivative and proportional–integral controller.

中文翻译:

使用混合优化算法的瞬时条件下分布式发电机与电网的快速同步

由于能源需求和智能电网技术,不可再生能源和可再生能源的整合正在迅速增长。在电网中,由于频率不稳定,电压失真和电压不平衡等问题而降低了同步性能。这项工作提出了在瞬变条件下利用混合优化比例谐振(PR)控制器的光伏并网系统的快速同步。所提出的系统是通过优化的PR控制器策略在固定参考系控制上进行设计和控制的。交流电压切换为交流电网电压,相位参考值和测量值之间的差异可能会出现误差。因此,PR控制器的电流控制器正在考虑谐波的影响。通过虎鲸优化(KWO)和蚱hopper优化算法的混合算法可以对控制器进行适当的调整,以减少谐波。同步减少了发电机输出之间的相角,电压和频率。基于光伏的优化PR控制器的性能控制了电压源逆变器,以实现快速同步的最佳信号。经过精心设计的基于LC滤波器的PR控制参数可改善总谐波失真瞬态响应的影响。所提出的系统是在MATLAB / Simulink平台上实现的。将系统的鲁棒性与比例积分微分控制器和比例积分控制器的传统控制器进行了比较。同步减少了发电机输出之间的相角,电压和频率。基于光伏的优化PR控制器的性能控制了电压源逆变器,以实现快速同步的最佳信号。经过精心设计的基于LC滤波器的PR控制参数可改善总谐波失真瞬态响应的影响。所提出的系统是在MATLAB / Simulink平台上实现的。将系统的鲁棒性与比例积分微分控制器和比例积分控制器的传统控制器进行了比较。同步减少了发电机输出之间的相角,电压和频率。基于光伏的优化PR控制器的性能控制了电压源逆变器,以实现快速同步的最佳信号。经过精心设计的基于LC滤波器的PR控制参数可改善总谐波失真瞬态响应的影响。所提出的系统是在MATLAB / Simulink平台上实现的。将系统的鲁棒性与比例积分微分控制器和比例积分控制器的传统控制器进行了比较。经过精心设计的基于LC滤波器的PR控制参数可改善总谐波失真瞬态响应的影响。所提出的系统是在MATLAB / Simulink平台上实现的。将系统的鲁棒性与比例积分微分控制器和比例积分控制器的传统控制器进行了比较。经过精心设计的基于LC滤波器的PR控制参数可改善总谐波失真瞬态响应的影响。所提出的系统是在MATLAB / Simulink平台上实现的。将系统的鲁棒性与比例积分微分控制器和比例积分控制器的传统控制器进行了比较。
更新日期:2020-12-17
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