Transformation methods for PT slowmelting judgment of UN 5000 excitation system

Abstract

Abstract:

An excitation system should provide complete judgment function for PT disconnection to prevent the generator set tripping caused by excitation system overexcitation. Since the shortcomings of the original PT disconnection logic of UN 5000 excitation system, there are hidden dangers of overexcitation in excitation system caused by PT slow melting.By attaching an external detection device for PT disconnection or setting up a PT slowmelting logic inside the software, the hidden danger caused by PT slow melting can be eliminated, and the reliability of generator sets can be improved.

Key words:

font-size: 10.5pt, mso-spacerun: 'yes', mso-font-kerning: 1.0000pt">excitation system, PT disconnection logic, PT slow melting, overfont-size: 10.5pt, mso-spacerun: 'yes', mso-font-kerning: 1.0000pt">font-size: 10.5pt, mso-spacerun: 'yes', mso-font-kerning: 1.0000pt">excitation；PT

LIANG Guozhu.

Transformation methods for PT slowmelting judgment of UN 5000 excitation system [J]. Huadian Technology, 2019, 41(9): 78-80.

[1]	CHEN Hongyan，TANG Zhiguo，CHEN Qi，WANG Yongxu，WU Luming. Optimized method on distributed reactive power compensation in lowvoltage distribution network based on interval power flow calculation [J]. Huadian Technology, 2020, 42(6): 1-5.
[2]	WANG Lijie，WANG Hongteng，SUN Bo. Operation region partition for hydraulic turbine generator units based on stability test data [J]. Huadian Technology, 2020, 42(6): 6-9.
[3]	WU Luming，XUE Mingjun，CHEN Qi，WANG Yongxu，TANG Zhiguo，CHEN Hongyan1,2. 一起电子互感器异常引发的复杂发展性故障分析及改进 [J]. Huadian Technology, 2020, 42(6): 10-15.
[4]	NIU Ben. Water quality control technology for circulating cooling water taking soft water as source [J]. Huadian Technology, 2020, 42(6): 16-21.
[5]	SHANG Liyang，FAN Suxiang，ZHANG Zhiyong，YU Penghui，HE Yong，JI Yanru. Design and application of intelligent algaeblocking equipment for water conveyance main canal [J]. Huadian Technology, 2020, 42(6): 22-24.
[6]	ZHANG Hailong，YANG Guangrui，JING Xinjing，XING Leqiang，LIU Chao，DANG Lijun. Research on energysaving optimization for mediumspeed mill pulverizing systems [J]. Huadian Technology, 2020, 42(6): 25-30.
[7]	WANG Yunpeng,DUAN Xiaoyun. Retrofit and combustion adjustment of a lownitrogen burner in a 330MW cogeneration unit [J]. Huadian Technology, 2020, 42(6): 35-42.
[8]	SHAO Lei，PAN Guangqiang，ZHANG Yuquan，CHU Hao，CAO Wei. Application of acoustic blockage removal technique applied in urea pyrolysis furnaces [J]. Huadian Technology, 2020, 42(6): 43-46.
[9]	WANG Zhiyong，XU He，ZHU Huimin，GE Junpei，XU Jing. Comparative analysis of calculation models for thermal efficiencies of waste heat boilers in gassteam combined cycle units [J]. Huadian Technology, 2020, 42(6): 47-51.
[10]	WANG Dongzhen，GE Leijiao. Optimization strategy of multiple output cables samephase parallel operation for gas turbine generators [J]. Huadian Technology, 2020, 42(6): 52-56.
[11]	GAO Yong，TIAN Xin，WU Yinchen. Evaluation of prefilter improvement effect of gas turbine air intake filtration system [J]. Huadian Technology, 2020, 42(6): 57-61.
[12]	XING Wu，GUO Xiao，WANG Zhe，SHI Bolun. Application of parameter identification principle in the protection of magnetic shunt reactor [J]. Huadian Technology, 2020, 42(6): 47-51.
[13]	WU Siming，TONG Jialin，WU Yueseng，QI Yong，SUN Wuyi. Comprehensive upgrading reconstruction and performance analysis of a subcritical boiler [J]. Huadian Technology, 2020, 42(6): 66-71.
[14]	YANG Rui. Construction and implementation of intelligent, digital and networked heatsupply system [J]. Huadian Technology, 2020, 42(6): 83-86.
[15]	YOU Jia，WANG Runfang，MA Dawei，JIANG Shaoyi，ZHU Renbin，CHEN Jian，WANG Kefeng. Assessment of alternative energy based on the source apportionment of PM2.5 in Hefei City [J]. Huadian Technology, 2020, 42(1): 1-7.

Transformation methods for PT slowmelting judgment of UN 5000 excitation system

PDF

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments