660 MW水热电联产超临界机组综合蓄能一次调频能力研究及应用

doi:10.11930/j.issn.1004-9649.201904094

摘要/Abstract

摘要： 利用某660 MW水热电联产超临界机组热平衡图等设计参数，分别对该机组凝结水节流、热网抽汽节流一次调频能力进行定量分析的理论研究，得出100%、75%、50%THA工况下各节流变化对应机组功率变化的理论增益、规律。在安全控制范围内，对该机组进行综合蓄能一次调频能力试验研究，得出350 MW、450 MW、600 MW工况下各节流变化对应机组功率变化的实际增益、规律以及综合蓄能一次调频实际能力。结合试验研究，在机组原一次调频控制逻辑的基础上开发设计了适用于该机组一次调频的综合蓄能调频控制模块，模拟应用效果良好，一次调频能力能够满足相关要求，间接提高了机组的经济性。

关键词: 水热电联产, 超临界机组, 综合蓄能, 调频能力, 理论研究, 试验研究, 应用

Abstract: In this paper, the design parameters such as the heat balance diagram of a 660 MW water heat and power cogeneration supercritical unit are used to conduct the theoretical study based on the quantitative analysis of the primary frequency modulation capacity of condensate throttling and heat extraction throttling of the unit. Then the theoretical gain and rule of each throttling change corresponding to the unit power change are obtained respectively under the working conditions of 100%, 75% and 50% THA. Within the scope of safety control, the experimental study on primary frequency modulation capability in terms of comprehensive energy storage of the unit is carried out, hence the actual gain and rule of each throttling change corresponding to the unit power change as well as the actual capacity of primary frequency modulation in terms of comprehensive energy storage are calculated under the working conditions of 350 MW, 450 MW and 600 MW respectively. Based on the original primary frequency modulation control logic of the unit and in combination with the experimental results, a comprehensive energy storage module is developed for the primary frequency modulation of the unit. The simulation application demonstrates satisfactory results. The primary frequency modulation capability has met the related requirements and therefore indirectly improved the economic efficiency of the unit.

Key words: water heat and power cogeneration, supercritical unit, comprehensive energy storage, primary frequency modulation capacity, theoretical study, experimental study, application

陈顺青, 闫建平, 张玉胜. 660 MW水热电联产超临界机组综合蓄能一次调频能力研究及应用[J]. 中国电力, 2020, 53(1): 177-184.

CHEN Shunqing, YAN Jianping, ZHANG Yusheng. Study and Application on Primary Frequency Modulation Capability by Using Comprehensive Energy Storage of a 660 MW Water Heat and Power Cogeneration Supercritical Unit[J]. Electric Power, 2020, 53(1): 177-184.

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https://www.electricpower.com.cn/CN/Y2020/V53/I1/177

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