论文标题
可变的速度水电厂具有虚拟惯性控制以提供快速频率储量
Variable speed hydropower plant with virtual inertia control for provision of fast frequency reserves
论文作者
论文摘要
在本文中，在可变速度水电（VSHP）工厂实施了五个虚拟惯性控制结构。结果表明，所有五个都可以提供快速的功率储备，以在干扰后干扰后保持电网稳定性。 VSHP非常适合目的，因为几乎可以通过利用涡轮和发电机的旋转能来即时更改其输出功率。这将导致涡轮旋转速度暂时偏离其最佳值。然后，调速器控制将通过控制导向叶片开口，从而恢复涡轮机旋转速度，从而恢复涡轮机的流量和机械功率。因此，可以永久更改VSHP输出功率，以主要是频率储备。进行了动态和特征值分析，以比较五个不同版本的基本VSG和VSM控制结构。 VSG，具有永久性下垂（VSG-PID），VSM，VSM的功率频率PID-Controller，带有功率频率PD-Controller（VSM-PD），以及带有功率频率PID-CONTROLLER和PORMENT DROOP（VSM-PID）的VSM（VSM-PID）。它们通过两个主要标准进行评估；他们传递瞬时功率（惯性）的能力，以降低频率变化率（ROCOF）及其对频率控制控制的贡献（稳态频率下垂响应）
In this paper, five virtual inertia control structures are implemented and tested on a variable speed hydropower (VSHP) plant. The results show that all five can deliver fast power reserves to maintain grid stability after disturbances after a disturbance. The VSHP is well suited for the purposed since its output power can be changed almost instantaneously by utilizing the rotational energy of the turbine and generator. This will cause the turbine rotational speed to deviate from its optimal value temporarily. Then the governor control will regain the turbine rotational speed by controlling the guide vane opening and thereby the turbine flow and mechanical power. With that, the VSHP output power can be changed permanently to contribute with primarily frequency reserves. Dynamic and eigenvalue analyses are performed to compare five different versions of the basic VSG and VSM control structures; VSG, power-frequency PID-controller with permanent droop (VSG-PID), VSM, VSM with power-frequency PD-controller (VSM-PD), and VSM with power-frequency PID-controller and permanent droop (VSM-PID). They are evaluated by two main criteria; their ability to deliver instantaneous power (inertia) to reduce the rate of change of frequency (ROCOF) and their contribution to frequency containment control (steady-state frequency droop response)
