摘要
为实现微电网非计划性孤岛发生时的功率快速调节,保证电能质量,延长电池类储能设备的使用寿命等目的,提出基于孤岛模式的双储能微电网下垂协调控制策略。该策略根据储能设备的不同充放电特性,同时考虑各自的荷电状态,实时修改储能单元输出功率比例系数,从而使负荷所需功率在不同储能设备中合理优化分配。选用互补性较强的超级电容与磷酸铁锂电池作为储能设备,在分析各自工作特性的基础上,重点研究含两类储能设备的微电网综合控制算法,建立微电网控制策略数学模型,最后采用PSCAD/EMTDC进行仿真分析,算例验证方案的合理性与有效性。
Energy storage devices as energy modulation unit of microgrid system can elevate continuity and liability of power supply for sensitive load. In order to realize the goal of power fast modulation, high power quality and extending working life of energy storage device like as battery, this paper proposes droop coordinated control strategy based on islanded microgrid of dual energy storage. This strategy can modify output power proportional coefficients of energy storage units in real time according to different charge/discharge characteristics of energy storage devices and their state of charge （SOC） , which makes load power allocated to different storage device reasonably. This paper selects complementary super capacity and lithium iron phosphate battery as energy storage devices, based on the analysis of their performance characteristics, focuses on the comprehensive control algorithm of microgrid which include two kinds of energy storage devices, build the math model of microgrid control strategy, at last use PSCAD/EMTDC to simulate and analyze, the results verify the reasonableness and effectiveness of the proposed strategy.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2015年第1期146-153,共8页
Acta Energiae Solaris Sinica
基金
国家自然科学基金(61463042)
内蒙古教育厅项目(NJZY14170)
关键词
风光储能设备
微电网模型
荷电状态(SOC)
协调控制
仿真分析
wind/photovohaic energy storage unit
microgrid model
state of charge （SOC）
coordinated control
simulation analysis
