This paper assesses the value of bulk grid-scale energy storage(GES) technologies in six electric power districts of China. The economic feasibility of GES under three different types of compensation mechanisms was an...This paper assesses the value of bulk grid-scale energy storage(GES) technologies in six electric power districts of China. The economic feasibility of GES under three different types of compensation mechanisms was analyzed. Based on a careful investigation of China’s existing power system, a unit commitment model that comprehensively reflects the production costs(including reduction of fuel consumption, grid loss, ancillary services and so on) of the entire power grid has been proposed. The benefits of GES can be obtained by comparing the production costs of two different scenarios: with and without GES. Results show that under the current scheduling methods and compensation mechanisms, in most provinces in China, the energy storage’s revenue is lower than the value that it brings.展开更多
首先采用风险价值(value at risk,VaR)方法根据历史数据计算出各月峰谷时段用电量的历史序列,并在一定的置信度下对谷段和峰段的用电量进行预测;然后采用区间数学方法构建了风险评估模型,以便对供电公司实行峰谷分时电价的风险进行衡量...首先采用风险价值(value at risk,VaR)方法根据历史数据计算出各月峰谷时段用电量的历史序列,并在一定的置信度下对谷段和峰段的用电量进行预测;然后采用区间数学方法构建了风险评估模型,以便对供电公司实行峰谷分时电价的风险进行衡量;最后采用该模型分析了某供电局的历史数据并衡量了其实施峰谷分时电价的风险,结果表明该模型不仅是有效的,而且还可以使需求侧管理更具可操作性。展开更多
基金The paper is supported by National Key R&D Plan(2017YFB0903605)National Natural Science Foundation of China(51606185)+1 种基金the frontier science research project of CAS(QYZDB-SSW-JSC023)Transformational Technologies for Clean Energy and Demonstration,Strategic Priority Research Program of the Chinses Academy of Sciences(XDA21070200).
文摘This paper assesses the value of bulk grid-scale energy storage(GES) technologies in six electric power districts of China. The economic feasibility of GES under three different types of compensation mechanisms was analyzed. Based on a careful investigation of China’s existing power system, a unit commitment model that comprehensively reflects the production costs(including reduction of fuel consumption, grid loss, ancillary services and so on) of the entire power grid has been proposed. The benefits of GES can be obtained by comparing the production costs of two different scenarios: with and without GES. Results show that under the current scheduling methods and compensation mechanisms, in most provinces in China, the energy storage’s revenue is lower than the value that it brings.
文摘首先采用风险价值(value at risk,VaR)方法根据历史数据计算出各月峰谷时段用电量的历史序列,并在一定的置信度下对谷段和峰段的用电量进行预测;然后采用区间数学方法构建了风险评估模型,以便对供电公司实行峰谷分时电价的风险进行衡量;最后采用该模型分析了某供电局的历史数据并衡量了其实施峰谷分时电价的风险,结果表明该模型不仅是有效的,而且还可以使需求侧管理更具可操作性。
