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四种热电厂电热解耦改造方案的运行灵活性剖析
作者:
作者单位:

1.大连理工大学电气工程学院辽宁省大连市 116024;2.华能大连电厂辽宁省大连市 116113;3.国网辽宁省电力有限公司经济技术研究院辽宁省沈阳市 110015

作者简介:

章艳(1980—),女,硕士,副教授,主要研究方向:电力系统可再生能源消纳。E-mail:zy@dlut.edu.cn
吕泉(1980—),男,通信作者,博士,副教授,主要研究方向:含高比例可再生能源的电热综合能源系统。E-mail:lvquan@dlut.edu.cn
李杨(1985—),男,硕士,工程师,主要研究方向:热电厂灵活运行。E-mail:zn_jyy@ln.sgcc.com.cn

通讯作者:

基金项目:

国家自然科学基金资助项目(51607021);中央高校基本科研业务费资助项目(DUT19JC33)。


Analysis on Operation Flexibility of Combined Heat and Power Plant with Four Improved Power-Heat Decoupling Schemes
Author:
Affiliation:

1.School of Electrical Engineering, Dalian University of Technology, Dalian 116024, China;2.Huaneng Dalian Power Plant, Dalian 116113, China;3.Institute of Economics and Technology of State Grid Liaoning Electric Power Co., Ltd., Shenyang 110015, China

Fund Project:

This work is supported by National Natural Science Foundation of China (No. 51607021) and the Fundamental Research Funds for the Central Universities (No. DUT19JC33).

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    摘要:

    明确了热电厂电热解耦改造是为热电联产机组配置短期调峰热源的本质。从配置补偿调峰热源的角度,分析了储热补偿、电锅炉补偿、旁路补偿和低压缸切除补偿4种改造方案的适用场景、电热运行区间、供热成本、供热能力并建立数学模型。建立了改造后热电厂运行灵活性评价模型;结合算例分析了4种方案单独使用及组合使用时在不同电负荷场景下的灵活性提升效果。

    Abstract:

    This paper shows that power-heat decoupling transformation of combined heat and power (CHP) plant is the essence of configuring short-term heat sources for CHP units. From the view of configuring compensation heat sources, applicable scenarios, feasible operation region, heating cost and heating capacity of four compensation strategies are analyzed, including heating storage, electric boiler, bypass compensation and low-pressure cylinder cut-off . The operation flexibility evaluation model of transformed CHP plant is established. Examples are given to analyze the flexibility improvement effects of the four strategies in different scenarios when they are used alone or in combination.

    表 1 灵活性改造方案的对比Table 1 Comparison of flexibility transformation schemes
    图1 风热冲突原理示意图Fig.1 Schematic diagram of wind-heat conflict
    图2 方案1和2下热电联产机组运行区间Fig.2 Operation regions of CHP unit with scheme 1 and 2
    图3 方案3和4下热电联产机组运行区间Fig.3 Operation regions of CHP unit with scheme 3 and 4
    图4 不同方案下灵活性改造的正、负偏差Fig.4 Positive or negative deviation of flexibility transformation with different schemes
    图5 大风场景下组合方案A的发电与负荷偏差Fig.5 Power generation and load deviation of combined scheme A in scenario with strong wind
    图 四种补偿供热时的电热运行区间示意图Fig. Feasible operating region of CHP unit with 4 kinds of heating compensation scheme
    图1 风热冲突原理示意图Fig.1 Schematic diagram of wind-heat conflict
    图2 方案1和2下热电联产机组运行区间Fig.2 Operation regions of CHP unit with scheme 1 and 2
    图3 方案3和4下热电联产机组运行区间Fig.3 Operation regions of CHP unit with scheme 3 and 4
    图4 不同方案下灵活性改造的正、负偏差Fig.4 Positive or negative deviation of flexibility transformation with different schemes
    图5 大风场景下组合方案A的发电与负荷偏差Fig.5 Power generation and load deviation of combined scheme A in scenario with strong wind
    图 四种补偿供热时的电热运行区间示意图Fig. Feasible operating region of CHP unit with 4 kinds of heating compensation scheme
    图 电负荷曲线Fig. Electric load curve
    图 电负荷曲线Fig. Electric load curve
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引用本文

章艳,吕泉,李杨,等.四种热电厂电热解耦改造方案的运行灵活性剖析[J].电力系统自动化,2020,44(2):163-171. DOI:10.7500/AEPS20190509006.
ZHANG Yan,LYU Quan,LI Yang,et al.Analysis on Operation Flexibility of Combined Heat and Power Plant with Four Improved Power-Heat Decoupling Schemes[J].Automation of Electric Power Systems,2020,44(2):163-171. DOI:10.7500/AEPS20190509006.

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历史
  • 收稿日期:2019-05-09
  • 最后修改日期:2019-09-19
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  • 在线发布日期: 2020-01-20
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