钻井直流微电网冲击功率的混合储能平衡技术

发布时间：2018-07-15 21:34

【摘要】：受限于钻井直流微电网的功率动态调节缓慢,冲击性负载对钻井直流微电网电能质量造成严重影响。为了解决直流微电网冲击功率供需均衡问题,提出以混合储能环节为核心的补偿方法。基于超级电容和蓄电池储能的互补特性,在传统混合储能控制策略的基础上,提出一种纳入蓄电池参考电流约束和电流动态分配的混合储能控制策略。在保证蓄电池电流限制值不被超越的前提下,实现冲击功率在混合储能单元内的优化分配,从而既能够延长蓄电池生命周期,又显著缩短了混合储能系统冲击功率补偿的动态响应时间,解决了钻井直流微电网电压波动的问题。仿真与实验验证了所提控制策略的有效性与可行性。
[Abstract]:The dynamic regulation of DC microgrid power is slow, and the impact load has a serious impact on the power quality of DC microgrid. In order to solve the problem of balancing supply and demand of impact power in DC microgrid, a compensation method based on hybrid energy storage is proposed. Based on the complementary characteristics of super capacitor and storage battery, a hybrid energy storage control strategy with reference current constraints and dynamic current distribution is proposed based on the traditional hybrid energy storage control strategy. On the premise that the limit value of battery current is not exceeded, the optimal distribution of impact power in hybrid energy storage unit is realized, which can prolong the battery life cycle. The dynamic response time of impulse power compensation in hybrid energy storage system is shortened and the problem of voltage fluctuation in drilling DC microgrid is solved. Simulation and experiment verify the effectiveness and feasibility of the proposed control strategy.
【作者单位】：哈尔滨工业大学电气工程学院;大庆油田有限责任公司生产运行部;
【基金】：国家自然科学基金(51507039) 中国博士后科学基金(2016M591529) 中央高校基本科研业务费专项资金(HIT.NSRIF.2017013)
【分类号】：TE2;TM727

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