直接空冷机组变工况运行特性分析

doi:10.12096/j.2096-4528.pgt.19039

发电技术 ›› 2020, Vol. 41 ›› Issue (4): 378-384.DOI: 10.12096/j.2096-4528.pgt.19039

直接空冷机组变工况运行特性分析

陈雅丽¹(),高全娥²()

¹ 大同电力高级技工学校, 山西省大同市 037039
² 山西电力职业技术学院, 山西省太原市 030021

收稿日期:2019-03-28 出版日期:2020-08-31 发布日期:2020-09-01
作者简介:陈雅丽(1985),女,硕士,讲师,研究方向为发电机组空冷技术, 2297760362@qq.com|高全娥(1979),女,硕士,高级工程师,研究方向直接空冷技术, 364585303@qq.com

Characteristic Analysis of Direct Air-cooled Units Under Variable Working Conditions

Yali CHEN¹(),Quane GAO²()

¹ Datong Electric Power Senior Technical School, Datong 037039, Shanxi Province, China
² Electric Power Occupational Technical Institute of SEPC, Taiyuan 030021, Shanxi Province, China

Received:2019-03-28 Published:2020-08-31 Online:2020-09-01

摘要/Abstract

摘要：

水资源的减少及分布不均问题促进了火力发电系统中空冷技术的产生，但是空冷机组也有能耗较高的缺点。凝汽器是空冷机组的核心设备，其排汽压力是影响整个系统性能的最关键指标之一。以某电厂600 MW机组为例，提出一种冷凝器背压的简便计算方法，分析了迎面风速、环境温度、凝汽流量以及污垢热阻对凝汽器排汽压力的影响，为优化空冷机组运行、节能降耗提供参考。

关键词: 直接空冷机组, 冷凝器, 背压, 变工况

Abstract:

The reduction and uneven distribution of water resources has promoted the generation of air-cooled technology for thermal power systems, but the energy consumption of air-cooled units is higher. Condenser is the core equipment of air-cooled units, and its exhaust pressure is one of the most important indicators affecting the performance of the whole system. Taking a 600 MW unit of a power plant as an example, a simple calculation method for the back pressure of the condenser was put forward, and the influence of upwind speed, ambient temperature, condensate flow rate and fouling thermal resistance on the exhaust pressure of the condenser was analyzed, which can provide reference for optimizing air-cooled units operation, energy saving and consumption reduction.

Key words: direct air-cooled units, condenser, back pressure, variable working conditions

中图分类号:

TM621

陈雅丽,高全娥. 直接空冷机组变工况运行特性分析[J]. 发电技术, 2020, 41(4): 378-384.

Yali CHEN,Quane GAO. Characteristic Analysis of Direct Air-cooled Units Under Variable Working Conditions[J]. Power Generation Technology, 2020, 41(4): 378-384.

参考文献

1	张海燕, 姚峰, 常雪剑, 等. 新能源智能微电网规划[J]. 电网与清洁能源, 2018, 34 (4): 70- 73.
1	Zhang H Y , Yao F , Chang X J , et al. New energy smart microgrid planning[J] Power Grid and Clean Energy, 2018, 34 (4): 70- 73.
2	吴志明, 杨天蒙. 风光火大型能源基地联合外送优化配置[J]. 广东电力, 2018, 31 (6): 68- 74.
2	Wu Z M , Yang T M . Optimal allocation of combined external transmission of large-scale wind and fire energy bases[J] Guangdong Electric Power, 2018, 31 (6): 68- 74.
3	程启明, 程尹曼, 黄山, 等. 微电网经济优化运行综述[J]. 广东电力, 2018, 31 (2): 1- 9.
3	Cheng Q M , Cheng Y M , Huang S , et al. Overview of micro grid economic optimization operation[J] Guangdong Electric Power, 2018, 31 (2): 1- 9.
4	徐涛. 能源、可再生能源发展"十三五"规划要点解读[J]. 风能产业, 2017, (2): 10- 13.
4	Xu T . Interpretation of the 13th five year plan for energy and renewable energy development[J] Wind Energy Industry, 2017, (2): 10- 13.
5	周大地. 我国"十二五"能源发展战略[J]. 工程建设与设计, 2011, (7): 22- 23.
5	Zhou D D . China's 12th Five year energy development strategy[J] Engineering Construction and Design, 2011, (7): 22- 23.
6	尹晓晖.直接空冷机组冷端系统在线优化计算[D].太原:太原理工大学, 2018.
6	Yin X H.Online optimization calculation of cold end system of direct air cooling unit[D].Taiyuan, China: Taiyuan University of technology, 2018.
7	裘顺奕, 胡阳. 电站空冷技术的现状及应用前景[J]. 电站辅机, 2011, 32 (4): 1- 4.
7	Qiu S Y , Hu Y . Present situation and application prospect of air cooling technology in power station[J] Power Station Auxiliary Equipment, 2011, 32 (4): 1- 4.
8	Tawney R , Khan Z , Zachary J . Economic and performance evaluation of heat sink options in combined cycle applications[J] Journal of Engineering for Gas Turbines & Power, 2003, 127 (2): 891- 898.
9	张学镭, 王金平, 陈海平. 环境风影响下直接空冷机组排汽压力的计算模型[J]. 中国电机工程学报, 2012, 32 (23): 40- 47.
9	Zhang X L , Wang J P , Chen H P . Calculation model of exhaust pressure of direct air cooling unit under the influence of environmental wind[J] Chinese Journal of Electrical Engineering, 2012, 32 (23): 40- 47.
10	石维柱.直接空冷机组优化运行关键技术研究[D].保定:华北电力大学, 2010.
10	Shi W Z.Research on key technologies for optimal operation of direct air cooling units[D].Baoding, China: North China Electric Power University, 2010.
11	ZoItan S . Freeze-proof natural draught system[J] Electricity, 1994, 5 (1): 40- 48.
12	Norbert B.Dry cooling systems for large power station[C]//The Second International Symposium on Dry Cooling Technology.Beijing, China, 1993.
13	Knirsch H.Design and construction of large direct dry cooling units for thermal power plants[C]//ASME90-JPGC, 1990: 125-128.
14	齐复东, 贾树本, 马义伟. 电站凝汽设备和冷却系统[M]. 北京: 水利电力出版社, 1990.
14	Qi F D , Jia S B , Ma Y W . Condensing equipment and cooling system of power station[M]. Beijing, China: Water Conservancy and Electric Power Press, 1990.
15	杨世铭, 陶文铨. 传热学[M]. 4版北京: 高等教育出版社, 2006.
15	Yang S M , Tao W Q . Heat transfer[M]. 4th Edition Beijing, China: Higher Education Press, 2006.
16	杜小泽, 杨立军, 金衍胜, 等. 火电站直接空冷凝汽器传热系数实验关联式[J]. 中国电机工程学报, 2008, 28 (14): 32- 37.
16	Du X Z , Yang L J , Jin Y S , et al. Experimental correlation of heat transfer coefficient of direct air-cooled condenser in thermal power plants[J] Acta Electrical Engineering Sinica, 2008, 28 (14): 32- 37.
17	曹丽华, 金建国, 李勇. 背压变化对汽轮发电机组电功率影响的计算方法研究[J]. 汽轮机技术, 2006, 48 (1): 11- 13.
17	Cao L H , Jin J G , Li Y . Study on calculation method of influence of back pressure change on electric power of steam turbine generator set[J] Steam Turbine Technology, 2006, 48 (1): 11- 13.
18	韩中合, 马务, 王智. 1000 MW直接空冷机组凝汽器污垢热阻对热经济性影响特性研究[J]. 汽轮机技术, 2013, 55 (1): 51- 55.
18	Han Z H , Ma W , Wang Z . Study on the influence of condenser fouling thermal resistance on thermal economy of 1000 MW direct air cooling unit[J] Steam Turbine Technology, 2013, 55 (1): 51- 55.
19	齐复东, 贾树本, 马义伟. 电站凝汽设备和冷却系统[M]. 北京: 水利电力出版社, 1990.
19	Qi F D , Jia S B , Ma Y W . Condensing equipment and cooling system of power station[M]. Beijing, China: Water Conservancy and Electric Power Press, 1990.

[1]	翟融融, 魏清, 冯凌杰, 孙舸洵. 耦合膜冷凝器的碳捕集系统能耗特性分析[J]. 发电技术, 2023, 44(5): 667-673.
[2]	安留明, 安吉振, 刘一帆, 徐钢, 李季. 600 MW直接空冷凝汽器变工况特性研究[J]. 发电技术, 2022, 43(6): 935-941.
[3]	姚伟民,张瑞华,陈友良,殷春宏,曹琦,张鸿飞. 基于焓差法的燃机电厂机械通风逆流湿式冷却塔变工况特性研究[J]. 发电技术, 2019, 40(5): 493-498.
[4]	唐江,王学栋,赵玉柱,鄢传武. 凝汽机组高背压供热改造后的性能指标与调峰能力分析[J]. 发电技术, 2018, 39(5): 455-461.
[5]	刘传玲,柳明辉,陈振江,宋昂. 投运低压省煤器后汽轮机背压变化分析[J]. 发电技术, 2018, 39(4): 378-381.
[6]	刘光耀, 王学栋, 宋昂, 刘传玲. 135MW等级汽轮机不同高背压供热改造技术分析[J]. 发电技术, 2017, 38(5): 45-50.

直接空冷机组变工况运行特性分析

Characteristic Analysis of Direct Air-cooled Units Under Variable Working Conditions

RichHTML

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 6

编辑推荐

Metrics

本文评价