计及群控电热泵的微网联络线功率平滑策略

发布时间：2018-04-19 20:53

本文选题：功率波动抑制 + 联络线　；参考：《电力自动化设备》2017年06期

【摘要】：为有效平滑电-热联合型微网的联络线功率波动,提出一种基于电热泵和蓄电池的协同控制策略。考虑电热联合微网的运行特征及能量交互方式,基于电热泵的运行特性建立电-热能量转换模型。通过分析电热泵群优先度序列,计算电热泵群可运行数量与状态切换序号指针。考虑机组启停的调控限制,采用集群控制算法计算电热泵群开关序列。基于储能荷电状态以及电热泵实际出力状态,分别建立蓄电池、电热泵功率分配权函数,将联络线的波动功率在蓄电池与电热泵群间进行分配。算例结果表明,该策略能够通过电-热能量协同控制实现微网联络线功率平滑,同时提升电-热联合型微网的互补经济性与能量综合利用效率。
[Abstract]:In order to effectively smooth the tie-line power fluctuation of electric-thermal microgrid, a cooperative control strategy based on electrothermal pump and battery is proposed. Considering the operation characteristics and energy interaction mode of electric-heat combined microgrid, the electro-thermal energy conversion model is established based on the operation characteristics of electrothermal pump. By analyzing the priority sequence of the electrothermal pump group, the number of the electrothermal pump group can be operated and the pointer of the state switching serial number is calculated. The switching sequence of electric heat pump group is calculated by cluster control algorithm considering the control limit of unit starting and stopping. Based on the state of storage charge and actual output of electric pump, the power distribution function of battery and electric heat pump is established, and the fluctuating power of tie-line is distributed between battery and electric heat pump group. The simulation results show that the proposed strategy can achieve smooth tie-line power through electric-thermal energy coordination control, and improve the complementary economy and energy utilization efficiency of the electric-thermal combined microgrid at the same time.
【作者单位】：上海交通大学电气工程系;国网合肥供电公司;国网淄博供电公司;
【基金】：上海市科技英才扬帆计划(17YF1410200)~~
【分类号】：TM727

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