Reasons and regulation measures of low reheat steam temperature under variable load

Abstract

Abstract:

Reheat steam temperature has great influence on power generation efficiency.Regulation measures of the reheat steam temperature after low NOx combustion modification has been worthy of further study for the electric power workers. In low load conditions, the characteristics of the unit and the control ofreheat steam temperature change significantly with variable load. As the reheat steam temperature under the variable load is generally low after the low NOx combustion modification of the boiler, the cause analysis is carried out, and the countermeasures for the reheat steam temperature regulation are put forward.The adjustment strategy was implemented on the 330MW boiler, which reduced the fluctuation of the reheat steam temperature under variable load, and provided experience for the stability of the reheat steam temperature.

Key words:

">">variable load；air distribution；reheat steam temperature；delay time；low NO">">x">"> , combustion

CAI Peng，CHEN Kui，L Xia.

Reasons and regulation measures of low reheat steam temperature under variable load

[J]. Huadian Technology, 2019, 41(2): 52-54.

[1]	CHEN Bing, GUO Yongheng, LI Hongjiao, LIU Baiqian, ZHANG Ganyang, ZHAO Haibao. Configuration of electrode and plate in ESP and numerical simulation of particle migration in the electric field [J]. Huadian Technology, 2020, 42(9): 1-8.
[2]	WANG Yonglin，WANG Yun，JI Wanqing，SHEN Xianming，WANG Hua. Prognostic method for SRS equipment deterioration based on multivariate state estimation technology and similarity theory [J]. Huadian Technology, 2020, 42(1): 15-19.
[3]	ZHANG Bo. Setting coordination of field loss protection with admittance and excitation device low excitation limit [J]. Huadian Technology, 2019, 41(9): 63-66.
[4]	CAI Yuqing1，YANG Ping1，SHEN Congqi2，KANG Yingwei1，GUI Yishu2，XU Chunmei1. Optimization of lumped parameter model of singlephase heat pipe and its application in modern control engineering [J]. Huadian Technology, 2019, 41(6): 1-5.
[5]	WAN Liming1，MEI Zhenfeng2，LI Debo3，SU Peng1，QIU Jiayu1. Study on uniform flow technology of compact circular primary air duct at mediumspeed mill inlet [J]. Huadian Technology, 2019, 41(6): 6-12.
[6]	HU Meiling1，ZHAO Xuerui2，ZHAO Yaoli2. Design of winch hoist control systems for hydropower stations based on Ethernet [J]. Huadian Technology, 2019, 41(6): 13-16.
[7]	LIANG Pengwei，KANG Zhenquan，HUANG Haoran，MA Lili，LIU Hongxing，ZHU Chaolei. Research on the characteristics of gear modals based on ANSYS [J]. Huadian Technology, 2019, 41(6): 17-22.
[8]	ZHANG Wei1a，ZHOU Guopeng1b，WANG Yang1a，NI Hao1a，ZHONG Zhuhui2. Analysis of an abnormal alarm of TV for a 220kV main transformer protection [J]. Huadian Technology, 2019, 41(6): 23-26.
[9]	NIU Tengyun. Reliability modeling and state prediction of generating equipment in a power plant [J]. Huadian Technology, 2019, 41(6): 27-32.
[10]	XIE Kun1,2，ZHAO Qian1,2，CHENG Cheng1,2，LI Shuai1,2,CAI Liangliang1,2. Universal digitalinput merging unit with fault analysis function [J]. Huadian Technology, 2019, 41(6): 33-37.
[11]	SU Pan，SHEN Yang，YU Pengfeng，HAN Jing. Cause analysis and correction calculation on the positive balance coal consumption for electricity supply [J]. Huadian Technology, 2019, 41(6): 38-41.
[12]	WANG Xiaohua，TAN Zhilin，GONG Jian，LI Lianjun. Technoeconomic analysis of fluorine plastic heat exchange system in coalfired power plants [J]. Huadian Technology, 2019, 41(6): 42-45.
[13]	XU Ketao，HE Yongbing，PEI Yukun，ZHANG Yang. Analysis and improvement of SCR denitrification devices blockage in a coalfired power plant [J]. Huadian Technology, 2019, 41(6): 46-49.
[14]	YE Luo，WU Jundong，CHEN Xian. Operation analysis of low temperature economizer system [J]. Huadian Technology, 2019, 41(6): 50-52.
[15]	JIN Jun，ZHONG Xihu，LI Guangwei. Analysis of temperature deviation of exhaust flue gas in air preheater [J]. Huadian Technology, 2019, 41(6): 53-56.

Reasons and regulation measures of low reheat steam temperature under variable load

PDF

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments