电力市场化改革背景下电蓄热供热项目最佳蓄热率分析
Analysis of optimal heat storage rate for electric heat storage heating projects under background of electricity marketization reform
摘要：
蓄热率是电蓄热供热项目设计的关键指标,影响系统设备配置、电力增容需求及运行成本。随着全国加快电力市场化改革,电力价格波动增大,此类项目早期的相关边界条件与经验已不适用。为剔除电力低谷时段热负荷对蓄热率的影响,本文定义了用热量转移率,介绍了电蓄热供热项目最佳用热量转移率分析方法,并结合案例项目进行了说明。同时分析了用热量转移率对蓄热装置利用率和高峰、低谷、平时段用电量的影响,以及峰谷电价差及电力增容费对最佳用热量转移率的影响,可为该类项目提供参考。
Abstract：
The heat storage rate is a key indicator in the design of electric heat storage heating projects,which affects system equipment configuration,power capacity expansion requirements,and operating costs.With the acceleration of electricity marketization reform across the country,electricity price fluctuations increase,and the relevant boundary conditions and experience of such projects in the early stage are no longer applicable.To eliminate the influence of heating load during low electricity demand on the heat storage rate,this paper defines the heat transfer rate,presents the analysis method of the optimal heat transfer rate for electric heat storage heating projects,and illustrates it with a case project.At the same time,it analyses the influence of the heat transfer rate on the utilization rate of heat storage devices and electricity consumption in peak,low,and normal periods,as well as the influence of peak-valley electricity price differences and power capacity expansion fees on the optimal heat transfer rate,which can provide a reference for such projects.
Keywords:electric heat storage; heat storage rate; heat transfer rate; economic analysis; cool storage rate; heating