摘要
提出一种包含蓄电池储能的微网实时能量优化调度方法。该方法将全天24 h划分为峰、平、谷3种时段,在实时调度时,根据当前调度时刻所处的不同时段和蓄电池荷电状态所处的不同范围,采用不同的运行调度策略,同时以各微电源的有功输出与无功输出作为优化变量建立能量优化模型,设计了蓄电池放电罚函数并计入能量优化模型的目标函数中,可确保蓄电池随时维持一定的储能量以便在非计划孤网突然发生时为微网提供紧急功率支撑。该方法不仅可实现微网的可靠、经济运行,还有助于对主网进行"削峰填谷"。算例分析验证了所提方法的有效性。
A real-time optimal energy dispatch for microgrid with battery storage is proposed,which divides the day into peak period,normal period and valley period,and adopts different dispatch strategies according to current period and the SOC（State Of Charge） level of battery storage. The energy optimization model with the active and reactive power outputs of micro-sources as the optimization variables is established and the objective function of the model includes a designed battery discharge penalty function to maintain a certain amount of stored energy at any time as the emergency power support for microgrid during non-planned islanding. The proposed dispatch strategy improves the reliability and economy of microgrid operation and helps the ＂peak clipping and valley filling＂ of main grid. Case analysis verifies its effectiveness.
出处
《电力自动化设备》
EI
CSCD
北大核心
2013年第5期76-82,共7页
Electric Power Automation Equipment
基金
国家高技术研究发展计划(863计划)资助项目(2009-AA05Z221
2011AA05A113)
教育部新世纪优秀人才支持计划资助项目(NCET-08-0489)
浙江省科技计划项目(2009C-34013)
浙江省自然科学基金资助项目(R1080089)~~
关键词
蓄电池
储能
微网
实时调度
优化
模型
electric batteries
energy storage
microgrid
real-time dispatch
optimization
models
