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首页> 外文期刊>Energy Conversion, IEEE Transactions on >A Frequency-Control Approach by Photovoltaic Generator in a PV–Diesel Hybrid Power System
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A Frequency-Control Approach by Photovoltaic Generator in a PV–Diesel Hybrid Power System

机译：光伏-柴油混合动力系统中光伏发电机的频率控制方法

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摘要

A photovoltaic (PV) system’s output power fluctuates according to the weather conditions. Fluctuating PV power causes frequency deviations in the power utilities when the penetration is large. Usually, an energy storage system (ESS) is used to smooth the PV output power fluctuations and then the smoothed power is supplied to the utility. In this paper, a simple fuzzy-based frequency-control method is proposed for the PV generator in a PV–diesel hybrid system without the smoothing of PV output power fluctuations. By means of the proposed method, output power control of a PV generator considering the conditions of power utilities and the maximizing of energy capture are achieved. Here, fuzzy control is used to generate the PV output power command. This fuzzy control has average insolation, change of insolation, and frequency deviation as inputs. The proposed method is compared with a maximum power point tracking control-based method and with an ESS-based conventional control method. The numerical simulation results show that the proposed method is effective in providing frequency control and also delivers power near the maximum PV power level.
机译：光伏（PV）系统的输出功率会根据天气情况而波动。当穿透力很大时，波动的PV功率会导致电力公司的频率偏差。通常，使用能量存储系统（ESS）来平滑PV输出功率波动，然后将平滑后的功率提供给公用事业公司。在本文中，提出了一种简单的基于模糊的频率控制方法，该方法用于光伏-柴油混合动力系统中的光伏发电机，而不会平滑光伏输出功率波动。通过所提出的方法，实现了考虑到电力公司的条件和能量捕获的最大化的PV发电机的输出功率控制。此处，模糊控制用于生成PV输出功率命令。这种模糊控制将平均日照度，日照度变化和频率偏差作为输入。将该方法与基于最大功率点跟踪控制的方法和基于ESS的常规控制方法进行了比较。数值仿真结果表明，所提出的方法在提供频率控制方面是有效的，并且还可以在最大PV功率水平附近提供功率。

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