基于复合储能的微网运行特性分析

Analysis of micro-network operation characteristics based on composite energy storage

微网中含有分布式电源的发电形式具有强随机性和间歇性,而且负荷的变换也具有随机性。为了维持微网内部的能量平衡,储能单元需要频繁地吸收和释放功率,这对传统的蓄电池储能带来了非常严重的负面影响。结合超级电容和蓄电池特性互补的优点,采用了超级电容和蓄电池相结合的储能方式。通过对比分析复合储能和传统蓄电池储能在微网并网运行和孤网运行时微网内部功率的变化情况,证明了复合储能的有效性和实用性。

Micro-network containing distributed power generation was with strong randomicity and intermittent, and load transform also had intermittent. In order to maintain energy balance within the micro-nets, Energy storage unit needed frequent absorption and release of power. Very serious negative effect for the traditional battery energy storage was brought. Based on super capacitor and battery characteristics of complementary advantages, the combination of the super capacitor and the battery energy storage were adopted. Analysis of micro- network parallel operation and the isolated network operation into the simulated load was done, by comparing the compound of energy storage and the traditional battery energy storage power within the micro changes, the validity and practicability of composite energy storage was proved.