一种基于曲线控制的独立微电网协调控制方法

摘要

Traditional independent micro-grid depends on control center to coordination control , relying solely on the adjusting ability of battery to stabilize the system energy and thus the start -stop of the diesel engine depends entirely on the load.Because of the big volatile characteristics of distributed power supply , the batteries conducts charging-dis-charging operations frequently and also the diesel engine′s start-stop will be irregular , the lifetime of the battery and diesel engine would be shorten greatly .Mordover, the system can’t make full use of the distributed power supply and depends on fossil fuels greatly , so the efficiency is low .This paper presents a method based on load curve control to manage and optimize configuration of devices for the independent micro-grid, uses energy rationally according to the schedule , and calculates the lifetime of the device in a real environment , thus verifies that the method can maximumly prolong the life of the battery and diesel engines .%传统的独立微电网依靠控制中心进行协调控制，仅仅依靠蓄电池自身的调节能力来平抑能量，柴油机的启停完全依赖负荷。由于分布式发电源具有波动性大的特点，系统内蓄电池频繁进行充放电操作，柴油机也会不规律的频繁启停，因此蓄电池和柴油机的使用寿命大大缩短，且系统对化石能源的依赖较大，不能充分利用分布式能源，系统效率较低。文中介绍了一种基于负荷曲线控制的方法，对独立微电网系统内的设备进行管理，优化其配置，根据调度合理使用能源，最大限度的发挥了分布式能源的作用，并结合一个真实环境测算设备的使用时间，验证了此策略对延长蓄电池和柴油机寿命的作用。