Modernization of Steam Turbine Heat Exchangers Under Operation at Russia Power Plants

Ryabchikov, A. Yu.

doi:10.5772/56037

Cited by 2 publications

(1 citation statement)

References 3 publications

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“…In the method of theoretical optimization, some parameters are calculated by establishing a formula describing the working performance of the unit, and the relationship between the initial pressure and the heat consumption is established by using an optimization algorithm to find the optimal initial pressure within the allowable pressure range under a certain working condition. Li [1] established the online heat rate prediction model using the IGSA-LSSVR hybrid modeling method and determined the optimal initial pressure value by searching the corresponding main steam pressure value at the lowest heat rate. Taking a 200 MW unit as an example, Wang et al [2] conducted experimental research on the relationship between energy consumption and initial pressure change under different unit loads and obtained the optimal initial pressure under each load.…”

Section: Introductionmentioning

confidence: 99%

Initial Pressure Optimization of Thermal Power Unit under Deep Variable Operating Conditions

Niu,

Li,

Chen

et al. 2023

J. Phys.: Conf. Ser.

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Aiming at the problem of how to adjust the main steam pressure under the load instruction from the frequency modulation of the power grid to make the operation safer and more economical in the process of peak regulation, we take that 650 MW reheating condensed steam turbine as the research object. This paper introduces some domestic scholars’ research status of initial pressure optimization. The model is established by using EBSILON Professional thermodynamic system simulation software and combining it with the heat balance diagram of the power plant under VWO working conditions. The initial pressure optimization under deep variable working conditions is studied, then introduces the operation mode of the steam turbine under variable working conditions during peak shaving. The mathematical relationship between heat consumption rate and initial pressure was established to determine the feasible range of initial pressure. The exhaustive method traverses the feasible pressure interval under a particular working condition. The heat consumption rate under each pressure was calculated to screen out the optimal initial pressure and optimize the initial pressure curve.

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Section: Introductionmentioning

confidence: 99%