Flexibility improvement method of coal-fired thermal power plant based on the multi-scale utilization of steam turbine energy storage

Wang, Di; Deying, Liu; Wang, Chaonan; Zhou, Yunlong; Li, Xiaoli; Yang, Mei

doi:10.1016/j.energy.2021.122301

Cited by 34 publications

(4 citation statements)

References 29 publications

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“…It contains 3 secondary indicators: ‘Thermal power generation (SP1)’, ‘Clean energy generation (SP2)’, and ‘Photovoltaic power generation (SP3)’. ‘Thermal power generation (SP1)’ includes two tertiary indicators: ‘The scale of thermal power (SP11)’ and ‘Optimization of industrial structure (SP12)’, [ 40 , 41 ]. ‘Clean energy generation (SP2)’ includes 2 tertiary indicators: ‘The scale of wind power (SP21)’ and ‘The scale of integration (SP22)’ [ 42 , 43 ].…”

Section: Methodsmentioning

confidence: 99%

Influencing Factors and Realization Path of Power Decarbonization—Based on Panel Data Analysis of 30 Provinces in China from 2011 to 2019

Ren

Zhang

Fan

2022

IJERPH

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2011–2019 was the critical period of the low-carbon transformation of the power industry, reflecting the deepening influence of market mechanisms. Decarbonization of the new power system is a systematic project that needs to strengthen the top-level design and overall planning. Therefore, the paper first evaluates the decarbonization of the existing power system and controls the grid architecture, power structure, energy utilization, supply chain, and trading market to further optimize the system by strengthening the basic theoretical research of the new power system, exploring the key elements of the low-carbon development of the power system, promoting the breakthrough of the key subjects, and formulating the new power system decarbonization path. In the international push for carbon neutrality goals, identifying key factors in the decarbonization of the power system is critical to achieving low-carbon development in the power sector. Combined with the characteristics and development trends of the power industry, the five dimensions of “Power generation decarbonization (SP)”, “Energy utilization efficiency (EU)”, “Supply chain decarbonization (SC)”, and “Power grid decarbonization (PG)”, and “the Trading system (TS)” are selected to construct an evaluation index system for the power decarbonization and identify the key factors. The Analytic Network Process (ANP) Method is used to calculate the index weight and measure the decarbonization level of the power industry in 30 provinces in China from 2011 to 2019. The evaluation results reveal that the overall decarbonization level of the power industry is on the rise and has stabilized after peaking in 2016. The regression results of the systematic GMM estimation show that “the intensity of cross-regional transmission”, “the degree of carbon market participation”, “technology innovation”, and “policy support” can significantly promote power decarbonization, and different regions have heterogeneity. Therefore, we propose to achieve technological innovation and upgrading in the eastern region, strengthen the construction of smart grids in the central region, optimize the power structure in the western region, and improve the market mechanism as a whole, to form a low-carbon development path for the power industry.

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Section: Methodsmentioning

confidence: 99%

Influencing Factors and Realization Path of Power Decarbonization—Based on Panel Data Analysis of 30 Provinces in China from 2011 to 2019

Ren

Zhang

Fan

2022

IJERPH

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“…The water supply of the heating water is mixed with the high pressure heater main water supply and the boiler continues to heat up as a high temperature superheated steam [16]. Due to the introduction of the high pressure and the water steam heat exchanger, the steam flow of the high pressure cylinder, middle cylinder and low pressure cylinder is increased, and the rapid increase of the power generation of the steam turbine is realized [17,18].…”

Section: The Gas Heating and Melting Salt Reservoir And The High Velo...mentioning

confidence: 99%

Research on Coordinated Control Strategy of Power Response Rate of Thermal Power Plant with High Temperature Molten Salt Heat Storage

Li¹,

Li²,

Ma³

2023

IJHT

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Large-scale intermittent renewable energy grid-connected power generation requires thermal power units with sufficient flexibility to adjust resources, which can achieve deep peak regulation of 35% THA, and respond to load changes when intermittent renewable energy is connected to the grid in real time. In this paper, the flue gas heating molten salt is extracted directly from the process flow of the thermal power unit for heat storage, and the energy utilization efficiency is theoretically about three times that of the electric heat storage peak regulating system. The simulation results show that the coordinated control of flue gas-molten salt heat exchanger, molten salt-water/steam heat exchanger and boiler main control can reduce the depth peak regulation of thermal power units by 10%. The coordinated control method of thermal power unit of coupled molten salt heat storage system can effectively improve the response speed of AGC and primary frequency modulation of thermal power unit, and the output power response speed is increased by 39.12% after stabilization.

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“…When the load side and the new energy generation side fluctuate, thermal power units can rise and fall loads in response to FM commands to maintain grid frequency stability. However, the regulation rate and accuracy of thermal power units are limited, and there is a time lag at the beginning of the response to the FM command, so many thermal power units are equipped with storage batteries to improve their FM performance, which in turn improves the FM compensation gain of thermal power plants [2].…”

Section: Introductionmentioning

confidence: 99%

The command allocation of the combined fire and storage FM system considering the benefit optimization

Cheng,

Hao

2024

J. Phys.: Conf. Ser.

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The proportion of new energy generation connected to the grid is increasing year by year, which brings challenges to the frequency stability of the power grid. More controllable thermal power units are gradually retrofitted with energy storage batteries for joint frequency regulation, which can better suppress the fluctuation of grid frequency. In this paper, the comprehensive benefit model of a fire-storage joint FM system is constructed, which contains FM cost and FM benefit. The optimized power value of fire-storage joint FM is calculated based on the optimization of historical data of FM command, and finally, the simulation is compared with the constant rate response strategy. The results show that the strategy of this paper increases the comprehensive benefit of fire-storage joint FM systems by 1.71%.

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Flexibility improvement method of coal-fired thermal power plant based on the multi-scale utilization of steam turbine energy storage

Cited by 34 publications

References 29 publications

Influencing Factors and Realization Path of Power Decarbonization—Based on Panel Data Analysis of 30 Provinces in China from 2011 to 2019

Influencing Factors and Realization Path of Power Decarbonization—Based on Panel Data Analysis of 30 Provinces in China from 2011 to 2019

Research on Coordinated Control Strategy of Power Response Rate of Thermal Power Plant with High Temperature Molten Salt Heat Storage

The command allocation of the combined fire and storage FM system considering the benefit optimization

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