Addressing Abrupt PV Disturbances, and Mitigating Net Load Profile’s Ramp and Peak Demands, Using Distributed Storage Devices
Addressing Abrupt PV Disturbances, and Mitigating Net Load Profile’s Ramp and Peak Demands, Using Distributed Storage Devices
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DOI：
10.3390/en13051024
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发表时间：
2020-02
期刊：
影响因子：
3.2
通讯作者：
Roshan Sharma;M. Karimi-Ghartemani
中科院分区：
文献类型：
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作者：
Roshan Sharma;M. Karimi-Ghartemani
在高透过率的光伏发电系统中，由于云层的移动而产生的突发性扰动会引起电压和频率的扰动，增加系统损耗。同时，日辐射分布增加了净负荷分布的斜率，例如加州鸭子曲线，这给在傍晚时分迅速使常规发电机上线带来了挑战。因此，本文提出了一种实现两个目标的方法：(1)解决光伏发电机引起的突变扰动；(2)整形净负荷分布。这种方法是基于使用电池储能(BES)系统和光伏发电机，并配备适当的控制。拟议的BES通过组合光伏和BES实现灵活的功率上升和下降速率，从而解决了这两个问题。本文介绍了该系统的原理、建模和控制设计。对DC/AC混合学习系统进行了仿真，验证了所提出的BES在抑制扰动对DC和AC子系统的影响方面的有效性。结果表明，所提出的PV-BES修改了每日负荷分布，以减轻快速使同步发电机上线所需的挑战。
At high penetration level of photovoltaic (PV) generators, their abrupt disturbances (caused by moving clouds) cause voltage and frequency perturbations and increase system losses. Meanwhile, the daily irradiation profile increases the slope in the net-load profile, for example, California duck curve, which imposes the challenge of quickly bringing on-line conventional generators in the early evening hours. Accordingly, this paper presents an approach to achieve two objectives: (1) address abrupt disturbances caused by PV generators, and (2) shape the net load profile. The approach is based on employing battery energy storage (BES) systems coupled with PV generators and equipped with proper controls. The proposed BES addresses these two issues by realizing flexible power ramp-up and ramp-down rates by the combined PV and BES. This paper presents the principles, modeling and control design aspects of the proposed system. A hybrid dc/ac study system is simulated and the effectiveness of the proposed BES in reducing the impacts of disturbances on both the dc and ac subsystems is verified. It is then shown that the proposed PV-BES modifies the daily load profile to mitigate the required challenge for quickly bringing on-line synchronous generators.