Analysis on safety and reliability of 600 MW supercritical units' deep peak regulation

Abstract

Abstract: In order to expedite the development of non-fossil resources and promote the reform of energy production and consumption，deep peak regulation has become the main incentive measure for coal-fired units.Analyzing the application of deep peak regulation in two 600 MW supercritical units，the difficulties in deep peak regulation were summarized，and specialized subsystems including flue gas and air system，pulverizing system，water supply system，shaft seal and hydrogen cooler，stator cooling water system，circulating water and condensate system，bodies of large/small turbines were subscribed.The adjustment modes and points for attention of each subsystem during the deep peak regulation were analyzed.According to the experience in adjustment and trial operation，key points on steam turbine side and boiler side were given，which could be used as a reference for deep peak regulation of the same-type coal-fired units.

Key words: supercritical unit, operation, deep peak regulation, steam turbine, boiler, flexibility transformation, circulation water pump

SUN Haifeng, WANG Zhaohui, WANG Jianfeng, HU Da, ZHU Yue. Analysis on safety and reliability of 600 MW supercritical units' deep peak regulation[J]. Huadian Technology, 2020, 42(12): 94-100.

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Analysis on safety and reliability of 600 MW supercritical units' deep peak regulation

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