Optimization on coordinate control strategy assisted by high-pressure extraction steam
High-pressure steam extraction throttling is a feasible method for improving the reheat steam control performance. The method that HP steam extraction throttling is coupled into the coordinate control strategy is proposed
Research on the combined low pressure steam bypass and heat storage peak shaving for industrial extraction steam heating units
This paper takes an industrial extraction heating unit as the research object, introduces a heat storage device into the steam bypass and proposes two schemes for discharging, one for electricity users and the other for heat users. The unit''s original peak shaving
Optimization on coordinate control strategy assisted by high-pressure extraction steam
Dynamic models of a power plant coupled with control strategy are developed. • Reheat steam overtemperature is found to restrict the power ramp rate. • Coordinate control strategy assisted by steam extraction
Improving operational flexibility by regulating extraction steam of
Five measures of regulating extraction steam of high-pressure heaters are analyzed. • Dynamic responses of main thermodynamic parameters and output power are described. • The best strategy of operational flexibility on coal-fired power plant is achieved
Potentials of Thermal Energy Storage Integrated into Steam
For conventional power plants, the integration of thermal energy storage opens up a promising opportunity to meet future technical requirements in terms of flexibility while at the same time improving cost-effectiveness. In the FLEXI- TES joint project, the flexibilization of coal-fired steam power plants by integrating thermal energy storage
Research on the combined low pressure steam bypass and heat storage peak shaving for industrial extraction steam heating units
This paper takes an industrial extraction heating unit as the research object, introduces a heat storage device into the steam bypass and proposes two schemes for discharging
Performance and economic analysis of steam extraction for
Performance and economic analysis of steam extraction for energy storage to molten salt with coupled ejector and thermal power units. Xiang Liu, Kelang Jin, +2
Flexibility improvement method of coal-fired thermal
By combining the two schemes of steam extraction throttling and feedwater bypass throttling, a load control method for thermal power units with multi
Design and performance evaluation of a new thermal energy storage
Thermal power plants are required to enhance operational flexibility to ensure the power grid stability with the increasing share of intermittent renewable power. Integrating thermal energy storage is a potential solution. This work proposes a novel system of molten
Optimization on coordinate control strategy assisted by high-pressure extraction steam
The implementation of the upgrading of the national coal electric power unit has provided a clear proposal to promote Steam extraction and thermal energy storage could enable power output
Operational flexibility and operation optimization of CHP units supplying electricity and two-pressure steam
Combined heat and power (CHP) is an effective way of enhancing the energy efficiency of thermal power plants. Double-extraction CHP, a typical kind of CHP unit, can supply two-pressure steam to district heating and industry users.The feasible operation domain of
Thermo-economic optimization of the thermal energy storage
If a part of reheat steam is extracted from the intermediate pressure turbine inlet to the thermal energy storage system, the minimum power load of the coal-fired power plant
Application of extraction steam graded heat storage in peak shaving of condensing units
In order to alleviate the peak shaving pressure of power grid and further improve the deep peak shaving capacity of coal-fired units, this paper applies staged heat storage to condensing units. Under the condition of constant boiler load, the heat of regenerative steam
Design and performance evaluation of a new thermal energy storage
The thermal energy extraction from the live steam (Q s) is proportionate to the mass flow of the steam extraction from the live steam, which is restricted by the minimum mass flow within steam turbines.
Design of Energy Storage for Assisting Extraction Condensing Unit
Download Citation | Design of Energy Storage for Assisting Extraction Condensing Unit to Peak Regulation and Frequency Modulation | Coupling energy storage system is one of the potential ways to
Study of combined heat and power plant integration with thermal energy storage
This paper proposed a novel cascade reheat steam extraction system to adjust the electrical load by using EBSILON software by incorporating electrical energy storage (EES) and thermal energy
Application of extraction steam graded heat storage in peak shaving of condensing units
In order to alleviate the peak shaving pressure of power grid and further improve the deep peak shaving capacity of coal-fired units, this paper applies staged heat storage to condensing units. Under the condition of constant boiler load, the heat of regenerative steam extraction is stored to reduce the electrical load output of the unit.
Improving operational flexibility by regulating extraction steam of
Improved load regulation capacity of thermal power units based on extraction steam throttling 2022 Wang heating energy storage, electrical energy storage and bypass compensation technology
Research on the combined low pressure steam bypass and heat storage peak shaving for industrial extraction steam heating units,Energy
This paper takes an industrial extraction heating unit as the research object, introduces a heat storage device into the steam bypass and proposes two schemes for discharging, one for electricity users and the other for heat users.
Optimization on coordinate control strategy assisted by high-pressure extraction steam throttling
Dynamic models of a power plant coupled with control strategy are developed. • Reheat steam overtemperature is found to restrict the power ramp rate. • Coordinate control strategy assisted by steam extraction
Flexibility improvement method of coal-fired thermal power plant based on the multi-scale utilization of steam turbine energy storage
By combining the two schemes of steam extraction throttling and feedwater bypass throttling, a load control method for thermal power units with multi-scale utilization of steam turbine energy storage is proposed.
Thermodynamic analysis of the coal-fired combined heat and power units integrated with steam ejectors and thermal storage
In addition, Wang et al. [21] analyzed molten salt energy storage modes across four extraction schemes to determine the optimal integration approach between coal-fired power plants and molten salt energy storage systems.
Thermo-economic optimization of the thermal energy storage system extracting heat from the reheat steam
Performance and economic analysis of steam extraction for energy storage to molten salt with coupled ejector and thermal power units Article Nov 2023
Optimization of thermal performance of high temperature sensible heat thermal energy storage system for direct steam
The high temperature sensible heat thermal energy storage (TES) system for direct steam generation (DSG) has wide prospects in efficiently utilizing w
(PDF) Application of extraction steam graded heat storage in peak shaving of condensing units
Second, a simulation framework based on stochastic unit commitment and rolling economic dispatch is developed to explore the benefits of steam extraction and thermal energy storage in wind
Performance and economic analysis of steam extraction for
A new thermal power unit peaking system coupled with thermal energy storage and steam ejector was proposed, which is proved to be technically and
Performance and economic analysis of steam extraction for
A new thermal power unit peaking system coupled with thermal energy storage and steam ejector was proposed, which is proved to be technically and economically feasible based
Integration model and performance analysis of coupled thermal energy storage and ejector flexibility retrofit for 600 MW thermal power units
Semantic Scholar extracted view of "Integration model and performance analysis of coupled thermal energy storage and ejector flexibility retrofit for 600 MW thermal power units" by Xiang Liu et al.
Performance and economic analysis of steam extraction for
Main steam and reheat steam are the energy sources for the TES system and turbine power generation, so the extraction of different flow rates of main
Dynamic simulation on the frequency regulation ability enhancement with energy stored in steam distribution system for a combined heat and power unit
The extraction steam from the CHP unit to the SDS decreases to 0 in T EV when the EV is closing. Therefore, the time interval that plug-in electric vehicles and energy storage devices J. Energy Storage, 67 (2023), p.
Applying isovolumic steam capsule as new thermal energy storage unit
However, water thermal storage can only meet low-temperature needs, and the use of electrical energy and medium to high temperature steam extraction to produce hot water can cause significant losses and reduce energy conversion efficiency.
Operation optimization of electricity-steam coupled industrial energy system considering steam
Equivalent energy storage model of steam accumulator is proposed for optimization. • An interactive iteration scheme between optimization and simulation is presented. • Economic and efficiency performance of
Performance and economic analysis of steam extraction for
Request PDF | On Nov 1, 2023, Xiang Liu and others published Performance and economic analysis of steam extraction for energy storage to molten salt with coupled ejector and
Study of combined heat and power plant integration with thermal energy storage
During charging, the first steam extraction passes through two pairs of storage tanks with high-temperature and low-temperature molten salt in turn for heat exchange, and then enters the low-pressure turbine
Flexible Operation Mode of Coal-fired Power Unit Coupling with Heat Storage of Extracted Reheat Steam
In order to provide more grid space for the renewable energy power, the traditional coal-fired power unit should be operated flexibility, especially achieved the deep peak shaving capacity. In this paper, a new scheme using the reheat steam extraction is proposed to further reduce the load far below 50% rated power. Two flexible operation
Thermodynamics, flexibility and techno-economics assessment of a novel integration of coal-fired combined heating and power generation unit
For the normal programs and practical applications that equipped the thermal power plant with an electric energy storage system, such as electrochemical energy storage [16], the thermal power unit and energy storage system work separately.
