Along with the power demand variations, change in wind speed and irradiance leads to large frequency oscillations especially in case of isolated microgrid integrated with PV and wind power generating units. To minimize such frequency changes, proportional plus integral (PI) and proportional, integral, and derivative (PID) controllers are set up for controllable generating units of isolated microgrid. However, this paper introduced primary regulation concept for diesel generator (DG) along with PI/PID controller mechanism which enhances overall system stability and minimize the frequency oscillations during the initial stages of load/power changes. Also, the choice of PI and PID controllers is introduced in this paper when the DG’s in microgrid equipped with primary regulation loop along secondary control and only secondary control without primary loop as extension of frequency control. The investigations are carried out in regular load change and generation change patterns along with irregular stochastic models. Crow search optimization algorithm (CSOA) provide fine controller parameters in both cases and results carried out in MATLAB-SIMULINK environment

中文翻译：

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一次调节对配备乌鸦搜索算法调谐经典控制器的孤立微电网频率控制的影响

随着电力需求的变化，风速和辐照度的变化会导致大的频率振荡，特别是在光伏和风力发电机组集成的孤立微电网的情况下。为了最大限度地减少这种频率变化，为隔离微电网的可控发电机组设置了比例加积分 (PI) 和比例、积分和微分 (PID) 控制器。然而，本文介绍了柴油发电机 (DG) 的初级调节概念以及 PI/PID 控制器机制，可提高整体系统稳定性并最大限度地减少负载/功率变化初始阶段的频率振荡。还，本文介绍了微电网中DG在二次控制上设置一次调节回路和只二次控制而没有一次回路作为频率控制的扩展时的PI和PID控制器的选择。调查是在规则的负载变化和发电变化模式以及不规则的随机模型中进行的。Crow 搜索优化算法 (CSOA) 在两种情况下都提供精细的控制器参数，并在 MATLAB-SIMULINK 环境中执行结果