基于需求侧预约响应的平滑微网等效负荷功率波动控制策略
发布时间：2018-10-31 09:54
【摘要】：引入微网总负荷与风光等间歇性能源出力的差值——等效负荷作为具有稳定可控输出的微电源总发电参考量进行研究。通过在微网需求侧向能量管理系统(EMS)预约,储水式电热水器(WSH)群进行响应以平滑微网等效负荷功率波动。首先,建立了等效负荷的模型、基于反向变化频次比的风光出力跟随总负荷功率波动状况的评价指标,并分析了需求侧WSH群响应参与微网能量管理的可行性,计及WSH的传导能量、换位能量和加热能量,建立了WSH群的温度模型。其次,依据需求侧预约用水或常规用水时间、量值和用户主动控制及WSH温度上限,建立动态可控WSH群并计算其反向温度值,根据反向温度值排序结果将投入待机WSH与切除加热WSH两个过程统一,形成了基于需求侧预约WSH群响应的平滑微网等效负荷功率波动控制策略。最后,应用某微网实际案例数据验证了该控制策略的有效性。
[Abstract]:The equivalent load, which is the difference between the total load of microgrid and the output of intermittent energy such as solar energy, is studied as the total power generation reference of micro-power supply with stable and controllable output. By reserving the lateral energy management system (EMS) of microgrid demand, the (WSH) group of water storage electric water heater responds to smooth the fluctuation of equivalent load power of microgrid. First of all, the equivalent load model is established, and the evaluation index of the fluctuation condition of the wind power following the total load based on the reverse frequency ratio is established, and the feasibility of the demand-side WSH group response participating in the microgrid energy management is analyzed. Considering the conduction energy, transposition energy and heating energy of WSH, the temperature model of WSH group is established. Secondly, the dynamic controllable WSH group is set up and the reverse temperature value is calculated according to the time, quantity, user active control and WSH temperature upper limit of the demand side water reservation or conventional water use, and then the dynamic controllable WSH group is established and the reverse temperature value is calculated. According to the results of reverse temperature ordering, the two processes of putting into standby WSH and removing and heating WSH are unified, and a smooth micro-grid equivalent load power fluctuation control strategy based on the demand side reservation WSH group response is formed. Finally, the effectiveness of the control strategy is verified by a practical case of a microgrid.
【作者单位】： 国网湖南省电力公司衡阳供电分公司;新疆大学电气工程学院;
【基金】：国家国际科技合作专项资助项目(2013DFG61520)~~
【分类号】：TM727
[Abstract]:The equivalent load, which is the difference between the total load of microgrid and the output of intermittent energy such as solar energy, is studied as the total power generation reference of micro-power supply with stable and controllable output. By reserving the lateral energy management system (EMS) of microgrid demand, the (WSH) group of water storage electric water heater responds to smooth the fluctuation of equivalent load power of microgrid. First of all, the equivalent load model is established, and the evaluation index of the fluctuation condition of the wind power following the total load based on the reverse frequency ratio is established, and the feasibility of the demand-side WSH group response participating in the microgrid energy management is analyzed. Considering the conduction energy, transposition energy and heating energy of WSH, the temperature model of WSH group is established. Secondly, the dynamic controllable WSH group is set up and the reverse temperature value is calculated according to the time, quantity, user active control and WSH temperature upper limit of the demand side water reservation or conventional water use, and then the dynamic controllable WSH group is established and the reverse temperature value is calculated. According to the results of reverse temperature ordering, the two processes of putting into standby WSH and removing and heating WSH are unified, and a smooth micro-grid equivalent load power fluctuation control strategy based on the demand side reservation WSH group response is formed. Finally, the effectiveness of the control strategy is verified by a practical case of a microgrid.
【作者单位】： 国网湖南省电力公司衡阳供电分公司;新疆大学电气工程学院;
【基金】：国家国际科技合作专项资助项目(2013DFG61520)~~
【分类号】：TM727
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