Article(id=1217836027830517848, tenantId=1146029695717560320, journalId=1210938733613449225, issueId=1217836019408360416, articleNumber=null, orderNo=null, doi=10.19666/j.rlfd.202502028, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1739203200000, receivedDateStr=2025-02-11, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1768284335333, onlineDateStr=2026-01-13, pubDate=1764000000000, pubDateStr=2025-11-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1768284335333, onlineIssueDateStr=2026-01-13, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1768284335333, creator=13701087609, updateTime=1768284335333, updator=13701087609, issue=Issue{id=1217836019408360416, tenantId=1146029695717560320, journalId=1210938733613449225, year='2025', volume='54', issue='11', pageStart='1', pageEnd='168', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1768284333326, creator=13701087609, updateTime=1768284453982, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1217836525543408117, tenantId=1146029695717560320, journalId=1210938733613449225, issueId=1217836019408360416, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1217836525543408118, tenantId=1146029695717560320, journalId=1210938733613449225, issueId=1217836019408360416, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=142, endPage=150, ext={EN=ArticleExt(id=1217836028539355275, articleId=1217836027830517848, tenantId=1146029695717560320, journalId=1210938733613449225, language=EN, title=Research on thermo-electric decoupling technology and economic evaluation of large double reheat heating units, columnId=1211002405299294959, journalTitle=Thermal Power Generation, columnName=Thermal energy science research, runingTitle=null, highlight=null, articleAbstract=
To enhance the peak shaving performance of heating units, a new process for double-reheat heating unit integrating five thermo-electric decoupling technologies, namely cylinder cut-off, high-/medium- and low-pressure bypass heating, heat pump, hot water tank and electric boiler, has been proposed. A detailed thermodynamic model of the system was established, and the peak shaving performance of the novel power plant is compared with that of a reference power plant. Relying on the electricity market, a systematic economic operation strategy was put forward, and a techno-economic analysis was performed. The results show that, when the heating demand is 1 460 MW, the reference plant cannot meet the heating demand under the extraction-condensing condition. Under the cylinder cut-off condition, the load regulation range of the reference plant is 77.9% to 80.0% of the rated load, and it almost loses its load regulation ability. While under the cylinder cut-off + bypass condition, the load regulation range of the reference unit is 50.0%~80.0%, and its peak regulation ability has been improved. For the novel plant, in the same heating demand, the load regulation range has been expanded to 0~80.0%, and zero-power grid connection can be achieved especially during the low electricity demand period. Compared with the reference plant, the novel plant can reduce the power output during peak shaving periods by 107 600 MW·h per month, save 17 700 tons of coal, achieve an annual net profit increase of approximately 68.988 million yuan during the heating season, and have a payback period for new equipment investment of 5.6 years, demonstrating significant economic benefits.
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为提高供热机组的调峰性能,提出了一种集成切缸、高中低压旁路供热、热泵、热水罐和电锅炉5种热电解耦技术的新型二次再热供热机组流程,构建了详细的热力学分析模型,对比分析了参比电厂与新型电厂的调峰性能,依托电力现货市场,提出了系统的经济运行策略,并开展了技术经济性评估。结果表明:当供热需求为1 460 MW时,参比电厂在抽凝工况下无法满足供热需求,在切缸工况下,参比电厂的负荷调节范围为额定负荷的77.9%~80.0%,几乎丧失了负荷调节能力,而在切缸+旁路工况下,参比电厂的负荷调节范围为50.0%~80.0%,调峰能力有所改善;对于新型电厂,在相同的供热需求下,负荷调节范围扩增至0~80.0%,尤其是在电力低谷期可实现零功率上网;与参比机组相比,新型机组每月可减少低谷期上网电量约10.76万MW·h,节省燃煤量约1.77万吨,每年在采暖季可增加净收益约6 898.8万元,新增设备投资回收期约5.6年,经济效益显著。
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于俊红(1983),女,本科,高级工程师,主要研究方向为高效清洁发电及热电联产相关技术,yujunhong@sdepci.com。
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于俊红(1983),女,本科,高级工程师,主要研究方向为高效清洁发电及热电联产相关技术,yujunhong@sdepci.com。
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Operation process of a single generating unit, figureFileSmall=wQ2TRlCU5sQVM4kJKAEuag==, figureFileBig=OD3knCQwXR5iB2H8izlQVw==, tableContent=null), ArticleFig(id=1217836037657772593, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1217836027830517848, language=CN, label=图1, caption=
单台机组运行流程, figureFileSmall=wQ2TRlCU5sQVM4kJKAEuag==, figureFileBig=OD3knCQwXR5iB2H8izlQVw==, tableContent=null), ArticleFig(id=1217836037854904888, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1217836027830517848, language=EN, label=Fig.2, caption=
Thermal electrolytic coupling process of the new power plant, figureFileSmall=64ZUduVlWjPaaddOoA5Oxw==, figureFileBig=P41iSIDuSyuWKOU9w5gisQ==, tableContent=null), ArticleFig(id=1217836037942985278, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1217836027830517848, language=CN, label=图2, caption=
新型电厂热电解耦流程, figureFileSmall=64ZUduVlWjPaaddOoA5Oxw==, figureFileBig=P41iSIDuSyuWKOU9w5gisQ==, tableContent=null), ArticleFig(id=1217836038043648579, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1217836027830517848, language=EN, label=Fig.3, caption=
Load operating range for a single unit of the reference power plant in heating season, figureFileSmall=6nsuPW6Ur0aqoNXeYh8z9Q==, figureFileBig=35Jt7T2i+ABbA265N0qxeA==, tableContent=null), ArticleFig(id=1217836038156894792, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1217836027830517848, language=CN, label=图3, caption=
参比电厂单台机组采暖季负荷运行区间, figureFileSmall=6nsuPW6Ur0aqoNXeYh8z9Q==, figureFileBig=35Jt7T2i+ABbA265N0qxeA==, tableContent=null), ArticleFig(id=1217836038257558093, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1217836027830517848, language=EN, label=Fig.4, caption=
Heat supply operation process of the new power plant during off-peak electricity periods, figureFileSmall=Is0lfBbDNN0a7gpAQA1VKQ==, figureFileBig=eB7QWPrPewnCOQgHUuSy6g==, tableContent=null), ArticleFig(id=1217836038370804305, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1217836027830517848, language=CN, label=图4, caption=
新型电厂电力低谷期供热运行流程, figureFileSmall=Is0lfBbDNN0a7gpAQA1VKQ==, figureFileBig=eB7QWPrPewnCOQgHUuSy6g==, tableContent=null), ArticleFig(id=1217836038475661909, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1217836027830517848, language=EN, label=Fig.5, caption=
Process during thermal storage of the new plant, figureFileSmall=HHpPvCIsJe83Sc9XOwkEMQ==, figureFileBig=fChF+pZWjfINeRJvBZFiKQ==, tableContent=null), ArticleFig(id=1217836038588908123, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1217836027830517848, language=CN, label=图5, caption=
新型电厂储热过程时的流程, figureFileSmall=HHpPvCIsJe83Sc9XOwkEMQ==, figureFileBig=fChF+pZWjfINeRJvBZFiKQ==, tableContent=null), ArticleFig(id=1217836038685377121, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1217836027830517848, language=EN, label=Fig.6, caption=
The peak shaving performance of different plants in 1 460 MW heating demand, figureFileSmall=MuRwPhLAmFEuCNY6hHadZg==, figureFileBig=aVqG0ypwI2YM/yzWcgGgvA==, tableContent=null), ArticleFig(id=1217836038781846116, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1217836027830517848, language=CN, label=图6, caption=
1 460 MW供热需求下不同电厂的调峰性能对比, figureFileSmall=MuRwPhLAmFEuCNY6hHadZg==, figureFileBig=aVqG0ypwI2YM/yzWcgGgvA==, tableContent=null), ArticleFig(id=1217836038895092328, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1217836027830517848, language=EN, label=Fig.7, caption=
The on-grid electricity price in a typical month of the electricity spot market, figureFileSmall=pmvKtoQLQ3BdRrwlONqS6A==, figureFileBig=nZ6qe30QR+ag4951jCW7Yw==, tableContent=null), ArticleFig(id=1217836038987367021, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1217836027830517848, language=CN, label=图7, caption=
电力现货市场某典型月的上网电价, figureFileSmall=pmvKtoQLQ3BdRrwlONqS6A==, figureFileBig=nZ6qe30QR+ag4951jCW7Yw==, tableContent=null), ArticleFig(id=1217836039062864493, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1217836027830517848, language=EN, label=Fig.8, caption=
The on-grid electricity quantity and coal consumption of different plants, figureFileSmall=MCOaLvdCxzITz1e3OOblLQ==, figureFileBig=t5+ye/bYeT1TtS7lbsnChA==, tableContent=null), ArticleFig(id=1217836039129973359, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1217836027830517848, language=CN, label=图8, caption=
不同电厂的上网电量和燃煤量对比, figureFileSmall=MCOaLvdCxzITz1e3OOblLQ==, figureFileBig=t5+ye/bYeT1TtS7lbsnChA==, tableContent=null), ArticleFig(id=1217836039218053747, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1217836027830517848, language=EN, label=Fig.9, caption=
Operational performance of the hot water storage tank in the new plant within a typical month, figureFileSmall=Rh2jKHEg4AoJWG4MKGwPzg==, figureFileBig=EqwaBYR7CrAYkhmDs2I8wg==, tableContent=null), ArticleFig(id=1217836039314522743, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1217836027830517848, language=CN, label=图9, caption=
典型月内新型电厂热水罐运行情况, figureFileSmall=Rh2jKHEg4AoJWG4MKGwPzg==, figureFileBig=EqwaBYR7CrAYkhmDs2I8wg==, tableContent=null), ArticleFig(id=1217836039394214521, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1217836027830517848, language=EN, label=Fig.10, caption=
The net-profit difference of the plants within a typical month, figureFileSmall=PSBwBTxayZTV3NVQkY6LxQ==, figureFileBig=CxUF5hYvZMnkuf5i9tdWCw==, tableContent=null), ArticleFig(id=1217836039465517692, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1217836027830517848, language=CN, label=图10, caption=
典型月内电厂净收益差值对比, figureFileSmall=PSBwBTxayZTV3NVQkY6LxQ==, figureFileBig=CxUF5hYvZMnkuf5i9tdWCw==, tableContent=null), ArticleFig(id=1217836039541015170, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1217836027830517848, language=EN, label=Tab.1, caption=
Main thermal performance parameters of the single generating unit
, figureFileSmall=null, figureFileBig=null, tableContent=
| 项目 | THA | 工况1 | 工况2 | 工况3 |
|---|
| 机组负荷/MW | 660.2 | 571.4 | 514.5 | 330.1 |
| 主蒸汽流量/(t·h–1) | 1 680.6 | 1 910.0 | 1 843.0 | 1 518.9 |
| 主蒸汽温度/℃ | 600.0 | 600.0 | 600.0 | 600.0 |
| 主蒸汽压力/MPa | 31.000 | 31.000 | 31.000 | 24.184 |
| 一次再热蒸汽温度/℃ | 620.0 | 620.0 | 620.0 | 620.0 |
| 一次再热蒸汽压力/MPa | 9.646 | 10.835 | 10.489 | 8.101 |
| 二次再热蒸汽温度/℃ | 620.0 | 620.0 | 620.0 | 620.0 |
| 二次再热蒸汽压力/MPa | 3.093 | 3.427 | 3.323 | 2.386 |
| 采暖抽汽温度/℃ | 331.0 | 288.5 | 291.8 | 340.8 |
| 采暖抽汽压力/MPa | 0.350 | 0.350 | 0.350 | 0.350 |
| 低压缸进汽量/(t·h–1) | 1 065.6 | 348.8 | 60.0 | 60.0 |
| 采暖抽汽量/(t·h–1) | 0 | 750.0 | 960.0 | 960.0 |
| 供热量/MW | 0 | 570.0 | 730.0 | 752.0 |
), ArticleFig(id=1217836039629095553, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1217836027830517848, language=CN, label=表1, caption=
单台机组的主要热力性能参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 项目 | THA | 工况1 | 工况2 | 工况3 |
|---|
| 机组负荷/MW | 660.2 | 571.4 | 514.5 | 330.1 |
| 主蒸汽流量/(t·h–1) | 1 680.6 | 1 910.0 | 1 843.0 | 1 518.9 |
| 主蒸汽温度/℃ | 600.0 | 600.0 | 600.0 | 600.0 |
| 主蒸汽压力/MPa | 31.000 | 31.000 | 31.000 | 24.184 |
| 一次再热蒸汽温度/℃ | 620.0 | 620.0 | 620.0 | 620.0 |
| 一次再热蒸汽压力/MPa | 9.646 | 10.835 | 10.489 | 8.101 |
| 二次再热蒸汽温度/℃ | 620.0 | 620.0 | 620.0 | 620.0 |
| 二次再热蒸汽压力/MPa | 3.093 | 3.427 | 3.323 | 2.386 |
| 采暖抽汽温度/℃ | 331.0 | 288.5 | 291.8 | 340.8 |
| 采暖抽汽压力/MPa | 0.350 | 0.350 | 0.350 | 0.350 |
| 低压缸进汽量/(t·h–1) | 1 065.6 | 348.8 | 60.0 | 60.0 |
| 采暖抽汽量/(t·h–1) | 0 | 750.0 | 960.0 | 960.0 |
| 供热量/MW | 0 | 570.0 | 730.0 | 752.0 |
), ArticleFig(id=1217836040912552580, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1217836027830517848, language=EN, label=Tab.2, caption=
Parameter comparison between the reference plant and the new plant with different electricity prices
, figureFileSmall=null, figureFileBig=null, tableContent=
| 名称 | 高峰电价时段 | 中间电价时段 | 低谷电价时段 |
|---|
| 参比电厂 | 新型电厂 | 参比电厂 | 新型电厂 | 参比电厂 | 新型电厂 |
|---|
| 标准煤耗量/(t·h-1) | 359.3 | 359.3 | 359.3 | 359.3 | 281.6 | 175.4 |
| 发电量/MW | 1 056.6 | 1 056.6 | 1 056.6 | 1 056.6 | 660.2 | 396.2 |
| 厂用电率/% | 6 | 6 | 6 | 6 | 6 | 6 |
| 抽汽供热量/MW | 1 460.0 | 1 460.0 | 1 460.0 | 1 460.0 | 1 460.0 | 820.0 |
| 热泵制热量/MW | | 0 | | 211.0 | | 125.0 |
| 热泵耗电量/MW | | 0 | | 40.6 | | 24.0 |
| 储热罐放热量/MW | | 0 | | –211.0 | | 167.0 |
| 电锅炉制热量/MW | | 0 | | 0 | | 348.0 |
| 上网电量/MW | 993.2 | 993.2 | 993.2 | 952.6 | 620.6 | 0.4 |
), ArticleFig(id=1217836041004827272, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1217836027830517848, language=CN, label=表2, caption=
参比电厂和新型电厂在不同电价下的参数对比
, figureFileSmall=null, figureFileBig=null, tableContent=
| 名称 | 高峰电价时段 | 中间电价时段 | 低谷电价时段 |
|---|
| 参比电厂 | 新型电厂 | 参比电厂 | 新型电厂 | 参比电厂 | 新型电厂 |
|---|
| 标准煤耗量/(t·h-1) | 359.3 | 359.3 | 359.3 | 359.3 | 281.6 | 175.4 |
| 发电量/MW | 1 056.6 | 1 056.6 | 1 056.6 | 1 056.6 | 660.2 | 396.2 |
| 厂用电率/% | 6 | 6 | 6 | 6 | 6 | 6 |
| 抽汽供热量/MW | 1 460.0 | 1 460.0 | 1 460.0 | 1 460.0 | 1 460.0 | 820.0 |
| 热泵制热量/MW | | 0 | | 211.0 | | 125.0 |
| 热泵耗电量/MW | | 0 | | 40.6 | | 24.0 |
| 储热罐放热量/MW | | 0 | | –211.0 | | 167.0 |
| 电锅炉制热量/MW | | 0 | | 0 | | 348.0 |
| 上网电量/MW | 993.2 | 993.2 | 993.2 | 952.6 | 620.6 | 0.4 |
), ArticleFig(id=1217836041101296270, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1217836027830517848, language=EN, label=Tab.3, caption=
Total investment in new equipment for the new plant
, figureFileSmall=null, figureFileBig=null, tableContent=
| 项目 | 投资 |
|---|
| 热水罐 | 4 500 |
| 电动压缩热泵机组 | 8 400 |
| 电锅炉 | 13 500 |
| 余热侧循环水加压泵 | 300 |
| 管道部分 | 1 000 |
| 电气控制部分 | 1 300 |
| 土建部分 | 1 000 |
| 总计 | 30 000 |
), ArticleFig(id=1217836041201959569, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1217836027830517848, language=CN, label=表3, caption=
新型电厂新增设备总投资
, figureFileSmall=null, figureFileBig=null, tableContent=
| 项目 | 投资 |
|---|
| 热水罐 | 4 500 |
| 电动压缩热泵机组 | 8 400 |
| 电锅炉 | 13 500 |
| 余热侧循环水加压泵 | 300 |
| 管道部分 | 1 000 |
| 电气控制部分 | 1 300 |
| 土建部分 | 1 000 |
| 总计 | 30 000 |
), ArticleFig(id=1217836041290039956, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1217836027830517848, language=EN, label=Tab.4, caption=
Operating indicators of different power plants within typical month
, figureFileSmall=null, figureFileBig=null, tableContent=
| 项目 | 参比机组 | 新型机组 |
|---|
| 热泵月运行小时数/h | 0 | 299 |
| 月乏汽余热回收量/(MW·h) | 0 | 36 934.2 |
| 热泵月耗电量/(MW·h) | 0 | 8 793.9 |
| 热泵月制热量/万GJ | 0 | 16.46 |
| 电锅炉月耗电量/(MW·h) | 0 | 61 434.2 |
| 月上网电量/(MW·h) | 基准 | –107 611.6 |
| 月发电收入/万元 | 基准 | –85.30 |
| 月供热收入/万元 | 基准 | 0 |
| 月燃煤量/t | 基准 | –17 659.6 |
| 月燃煤成本/万元 | 基准 | –1 815.41 |
| 月净收益/万元 | 基准 | 1 724.70 |
| 项目投资/万元 | 基准 | 30 000.00 |
| 投资回收期/a | 基准 | 5.6 |
), ArticleFig(id=1217836041394897556, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1217836027830517848, language=CN, label=表4, caption=
不同电厂典型月内运行指标对比
, figureFileSmall=null, figureFileBig=null, tableContent=
| 项目 | 参比机组 | 新型机组 |
|---|
| 热泵月运行小时数/h | 0 | 299 |
| 月乏汽余热回收量/(MW·h) | 0 | 36 934.2 |
| 热泵月耗电量/(MW·h) | 0 | 8 793.9 |
| 热泵月制热量/万GJ | 0 | 16.46 |
| 电锅炉月耗电量/(MW·h) | 0 | 61 434.2 |
| 月上网电量/(MW·h) | 基准 | –107 611.6 |
| 月发电收入/万元 | 基准 | –85.30 |
| 月供热收入/万元 | 基准 | 0 |
| 月燃煤量/t | 基准 | –17 659.6 |
| 月燃煤成本/万元 | 基准 | –1 815.41 |
| 月净收益/万元 | 基准 | 1 724.70 |
| 项目投资/万元 | 基准 | 30 000.00 |
| 投资回收期/a | 基准 | 5.6 |
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