PDF(611 KB)
PDF(611 KB)
PDF(611 KB)
用于电网削峰填谷的储能系统容量配置及经济性评估
Capacity Configuration and Economic Evaluation of Energy Storage System for Grid Peak Load Shifting
电网负荷峰谷差日益增大,为满足高峰负荷用电需求,需增设或改造原有发输配电设备,而电网的低负荷率导致电力设备的资产利用率较低,使得电源规划建设缺乏经济性。储能技术可解决峰谷差加大、资产利用率低的问题,但现阶段储能系统的高成本限制了储能技术的规模化应用。考虑储能系统充放电平衡约束、循环寿命等因素,研究了储能技术用于电网负荷削峰填谷的控制策略,并建立了评价储能系统投资经济性的数学模型。以实际负荷数据为例,仿真分析了在不同调峰程度下储能系统的容量需求,分别从社会效益和投资者角度研究了储能系统投资的经济性问题,最后提出了储能系统规模化应用的经济条件。
With the gradual increase of peak-valley difference of grid load, many types of equipment of power generation, transmission and distribution should be added or retrofitted to meet the peak load demand for electricity. While the low loading rate of grid may lead to a lower asset utilization ratio of power equipment, which makes power planning and construction less economic. Energy storage technology can solve the problem of increase of peak-valley difference and low asset utilization ratio, however, the high cost of the energy storage system limits its large-scale applications at present. Considering the charge-discharge balance constraints and cycle life of energy storage system, the control strategy of energy storage technologies for grid peak load shifting is studied, and the mathematical model is established for the economic evaluation of investment in the energy storage system. Taking actual load data as examples, the capacity demands of energy storage system under different peaking degrees are simulated and analyzed. The economic issues of energy storage system investment are studied from the view of social benefits and investors respectively. Finally, the economic conditions of large-scale applications of energy storage system are proposed.
储能技术 / 削峰填谷 / 容量配置 / 经济评估 / 规模经济
energy storage technology / peak load shifting / capacity configuration / economic evaluation / scale economy
国家高技术研究发展计划(863计划)资助项目(2011AA05A113); 国家电网公司科技项目(DG71-12-003)
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