Condenser heat transfer performance evaluation method based on statistical analysis of operation data

Abstract

The invention discloses a condenser heat transfer performance evaluation method based on statistical analysis of operation data, and belongs to the technical field of thermal power generation. Comprehensive and accurate evaluation is hard to realize using the evaluation method in the prior art. If a condenser is detected and evaluated using detection equipment, there is a need to increase cost investment on one hand, and on the other hand, real-time evaluation is hard to realize. A standard data fitting model and a contrast data fitting model are built using a statistical analysis method according to unit load, circulating pump operation combination, low-pressure cylinder exhaust steam temperature, circulating water outlet temperature and circulating water inlet temperature data to get the comprehensive heat transfer performance condition of a condenser, and the amplitude of variation in heat transfer performance of the condenser is obtained through difference comparison of the two models. Through the method, the heat transfer performance of a condenser can be evaluated comprehensively, the performance of a condenser can be monitored in real time, and the cost and investment are low.

Description

technical field [0001] The invention relates to a method for evaluating the heat exchange performance of a condenser based on statistical analysis of operating data, and belongs to the technical field of thermal power generation. Background technique [0002] The condenser is the main equipment of the cold-end system of the thermal power generation unit. As a steam-water heat exchange equipment, the condenser end difference obtained by subtracting the exhaust steam temperature of the low-pressure cylinder and the outlet temperature of the circulating water is its key evaluation index, reflecting The advantages and disadvantages of the heat transfer performance of the condenser, the smaller condenser end difference reflects the better condenser heat transfer performance, and the larger condenser end difference reflects the poor condenser heat transfer performance, the condenser The level of the steam turbine end difference directly affects the economic performance of the whol...

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Problems solved by technology

[0003] However, the evaluation methods in the prior art usually evaluate the heat transfer performance of the condenser under one or several agreed working conditions, the coverage is small, and the comparison of working conditions often brings certain errors due to the introduction of additional corrections , so it is difficult to achieve a comprehensive and accurate evaluation

If testing equipment is used to test and evaluate the condenser, on the one hand, it needs to increase the cost input, and on the other hand, it is difficult to evaluate in real time

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