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标题：一种微电网新型下垂控制策略研究 |
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作者：冉成科 |
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| 2016年第6期 访问次数：367次 |
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摘要：本文研究以包含有风力发电、光伏发电和大容量的蓄电池的独立的微电网为研究对象，提出以蓄电池的变换器为主要控制单元，光伏逆变器作为次要控制单元的新型控制策略。蓄电池的SOC状态作为控制系统的控制参数，系统频率作为蓄电池、光伏发电和风力机组之间的通讯信号，节省了通讯设备，增加了电池的SOC状态监测系统。通过仿真验证，本文所提的控制策略可以在负载和新能源发电出现大幅波动的情况下将微网系统的电压和频率保持在EN 50160 的标准之内。在微网系统内出现短路故障时，蓄电池自动转换控制模式为电流控制方法，提供足够大的电流使得继电保护装置动作。最后通过PSIM软件仿真验证了本文所提控制策略。
关键词：微电网；变换器；光伏发电；风力发电；SOC；可再生能源
Abstract: This paper contained a control strategy for a separate microgrid wind power, photovoltaic power generation and largecapacity battery. The new control strategies mentioned in this article to the battery as the main control unit converter, PV inverter as a secondary control unit. SOC of the battery status of the control system as a control parameter. System frequency as a communication signal between batteries, photovoltaic and wind turbines saving communications equipment, increasing the batterys SOC condition monitoring system. Through simulation, in the case load and new energy fluctuate significantly, the control strategies mentioned in this article can still be microgrid system voltage and frequency remain within the standard EN 50160. And in the event of a failure within the microgrid system, by changing the battery model to current control method, the system can provide enough current to make protection devices action.
Key words: micro grid; converters; PV inverter; wind generator; SOC; renewable energy sources |
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