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Energy conservation in China's coal-fired power industry by installing advanced units and organized phasing out backward production

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Frontiers in Energy 2019年第4期13卷 798-807页

作者： Weiliang WANG Junfu LYU Zheng LI Hai ZHANG Guangxi YUE Weidou NI Key Laboratory for Thermal Science and power Engineering of Ministry of Education Department of Energy and Power EngineeringTsinghua UniversityBeijing 100084China

coal-fired power is the main power source and the biggest contributor to energy conservation in the past several decades in *** is generally believed that advanced technology should be counted on for energy ***,a review of the decline in the national average net coal consumption rate(NCCR)of China's coal-fired power industry along with its development over the past few decades indicates that the upgradation of the national unit capacity structure(including installing advanced production and phasing out backward production)plays a more important role.A quantitative study on the effect of the unit capacity structure upgradation on the decline in the national average NCCR suggests that phasing out backward production is the leading factor for the decline in the NCCR in the past decade,followed by the new installation,whose sum contributes to approximately 80%of the decline in the national average *** new installation has an effective affecting period of about 8 years,during which it would gradually decline from a relatively high *** the effect of phasing out backward production may remain at a certain degree given a continual action of phasing out backward capacity,it is suggested that the organized action of phasing out backward production should be insisted on.

关键词： coal-fired power energy conservation net coal consumption rate new installation phasing out backward production unit capacity structure

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Investigating Load Regulation Characteristics of a Wind-PV-coal Storage Multi-power Generation System

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Energy Engineering 2024年第4期121卷 913-932页

作者： Zhongping Liu Enhui Sun Jiahao Shi Lei Zhang Qi Wang Jiali Dong Sinopec Star Co. Ltd.Zhengzhou450000China Hebei Key Laboratory of Low Carbon and High Efficiency power Generation Technology North China Electric Power UniversityBaoding071003China

There is a growing need to explore the potential of coal-fired power plants(CFPPs)to enhance the utilization rate of wind power(wind)and photovoltaic power(PV)in the green energy *** study developed a load regulation model for a multi-power generation system comprising wind,PV,and coal energy storage using realworld *** power supply process was divided into eight fundamental load regulation scenarios,elucidating the influence of each scenario on load *** the framework of the multi-power generation system with the wind(50 MW)and PV(50 MW)alongside a CFPP(330 MW),a lithium-iron phosphate energy storage system(LIPBESS)was integrated to improve the system’s load regulation *** energy storage operation strategy was formulated based on the charging and discharging priority of the LIPBESS for each basic scenario and the charging and discharging load calculation method of LIPBESS auxiliary *** optimization using the particle swarm algorithm,the optimal capacity of LIPBESS was determined to be within the 5.24-4.88 MWh *** an economic perspective,the LIPBESS operating with CFPP as the regulating power source was 49.1% lower in capacity compared to the renewable energy-based storage mode.

关键词： Wind power coal-fired power PV multi-power generation system lithium-iron phosphate energy storage system

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An Investigation of Battery Energy Storage Aided Wind-coal Integrated Energy System

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Energy Engineering 2023年第7期120卷 1583-1602页

作者： Enhui Sun Jiahao Shi Lei Zhang Hongfu Ji Qian Zhang Yongyi Li Department of power Engineering North China Electric Power UniversityBaoding071003China Hebei Key Laboratory of Low Carbon and High Efficiency power Generation Technology Baoding071003China

This paper studies the feasibility of a supply-side wind-coal integrated energy *** on grid-side data,the load regulation model of coal-fired power and the wind-coal integrated energy system model are *** to the simulation results,the reasons why the wind-coal combined power supply is difficult to meet the grid-side demand are revealedthrough scenario *** thewind-coal combinedoperation,a wind-coalstorage integrated energy system was proposed by adding lithium-iron phosphate battery energy storage system(LIPBESS)to adjust the load of the *** to the four load adjustment scenarios of grid-side instructions of the wind-coal system,the difficulty of load adjustment in each scenario is *** on the priority degree of LIPBESS charge/discharge in four scenarios at different time periods,the operation mode of two charges and two discharges per day was *** on the independent operation level of coal-fired power,after the addition of LIPBESS(5.5 MWh),the average qualified rate of multi-power operation in March and June reached the level of independent operation of coal-fired power,while the average qualified rate of the remaining months was only 5.4%different from that of independent operation of coal-fired *** with the wind storage mode,the energy storage capacity and investment cost of wind-coal-storage integrated energy system are reduced by 54.2%and 53.7%,respectively.

关键词： Wind power lithium-iron phosphate battery energy storage system coal-fired power integrated energy system

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