电–热联合微网中分布式可再生能源功率波动平抑策略  

A Strategy to Suppress Fluctuation of Distributed Renewable Energy in Microgrids With Combined Heat and Power System

作　　者：施金晓 黄文焘[1] 邰能灵[1] 樊飞龙[1] 余墨多 马洲俊[2] 

机构地区：[1]上海交通大学电气工程系,上海市闵行区200240 [2]国网南京供电公司,江苏省南京市210019

出　　处：《中国电机工程学报》2018年第2期537-546,共10页Proceedings of the CSEE

摘　　要：为提高电–热联合微网消纳可再生能源出力的能力,提出一种深度平抑可再生能源出力波动的热泵–混合储能协同控制策略。分析电–热联合微网的结构特点与能量流控制交换方式,将热泵作为电–热能量转换元件,基于其运行特性建立电–热能流交换模型。功率波动平抑采用模块化分层结构,功率波动优化控制层考虑热泵与混合储能的运行状态,使用模糊控制对可变滤波时间系数进行调整,实现热泵与混合储能分别平抑功率波动中的低频和中高频成分;热供应协调控制层考虑终端用户的用热需求,对热泵出力分量进行修正。算例结果表明该策略能够实现电、热能量流的优化协调,保证功率波动平抑效果,同时提升电–热联合微网控制灵活性与互补经济性。In order to improve the ability of consuming renewable energy output, a coordination control strategy to stabilize fluctuation of renewable energy based on heat pumps and hybrid energy storage was put forward in microgrids with combined heat and power system. Based on the analysis of structure characteristics and energy flow control mode, heat pumps were used as the heat energy conversion devices. An electricity-heat conversion model was established considering their operation characteristics. Power fluctuation suppression strategy used modular structure. Control layer of power fluctuation optimization used fuzzy control to regulate the filter time constant based on the operation state of heat pumps and hybrid energy storage, realizing the suppression between low-frequency and high-frequency components. Collaborative layer of heat control corrected the heat pump output considering users＇ hot demand. Results show the proposed method can achieve the optimal coordination of electric and heat energy flow, ensure the power smoothing effect and enhance the microgrid control flexibility and complementary economy.

关 键 词：电–热联合微网 功率波动抑制 热泵 混合储能 模糊控制 

分 类 号：TM0[电气工程—电工理论与新技术]