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引用次数: 24
摘要
针对由双馈感应发电机(DFIG)、自卸负载和市电负载组成的独立远程供电系统，提出了一种新的混合储能拓扑结构。在这方面，研究了由电池存储和超级电容器组成的混合储能单元的行为。电池储能用于满足系统的能量需求，而超级电容器用于响应RAPS系统的快速功率波动。蓄电池通过逆变器连接到系统的交流侧，而超级电容器通过两级双向降压升压变换器连接到DFIG背靠背变换器系统的直流链路。针对混合储能系统，提出了一种限制电池在低放电深度(Depth of Discharge, DOD)下运行的控制策略。转储负荷用于吸收系统中不能被储能系统利用的多余能量。利用MATLAB Simulink对整个RAPS系统进行了建模。
Application of a hybrid energy storage in a remote area power supply system
A novel topology of a hybrid energy storage is proposed for a standalone Remote Area Power Supply (RAPS) system consisting of a Doubly Fed Induction Generator (DFIG), dump load and mains loads. In this regard, the behaviour of a hybrid energy storage unit consisting of battery storage and a supercapacitor is examined. The battery storage is designed to meet the energy requirement of the system while the supercapacitor is used to respond to rapid power fluctuations of the RAPS system. The battery storage is connected to the AC side of the system through an inverter while the supercapacitor is connected to the DC link of the back-to-back converter system of the DFIG via a two stage bi-directional buck boost converter. A control strategy is adopted for the hybrid energy storage system in which the operation of the battery is limited to a lower Depth of Discharge (DOD). The dump load is used to absorb excess energy in the system which cannot be utilised by the energy storage system. The entire RAPS system has been modelled using MATLAB Simulink.
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