Reason analysis of beaker refusal of action and relevant countermeasure

Abstract

Abstract: The Aphase grounding fault of 110kV Qiahe No.1 line in Qiafuqihai Hydropower Station of Xinjiang Ili River Basin Development and Construction Administrative Bureau was occurred. After that, the line protection acted correctly, but Aphase breaker rejected to trip, the local backup protection (bus) rejected to act, and remote backup protection acted and caused accident scope expansion. The accident field operators considered the problems unilaterally, and this leaded trial power transmission to be failure and the accident scope to expand once again. The reason of the accident was analyzed. According to the concrete condition after protection action, and according to the protection and fault record message, a scientific decision was got, and the accident expansion was avoided.

Key words: breaker refusal of tripping, protection refusal of tripping, line grounding fault, reason analysis, countermeasure, measure

YANG Shiyong. Reason analysis of beaker refusal of action and relevant countermeasure[J]. Huadian Technology, 2009, 31(8): 19-21.

[1]	LI Fangyi, LI Nan, ZHOU Yan, XIE Wu. Prediction on the regional carbon emission factor for power generation based on multi-dimensional data and deep learning [J]. Integrated Intelligent Energy, 2023, 45(8): 11-17.
[2]	LIU Yixian, WANG Yubin, YANG Qiang. High fault-tolerant distribution network state estimation method based on gated graph neural network [J]. Integrated Intelligent Energy, 2023, 45(6): 1-8.
[3]	LIU Xiuru, LI Peipei, WANG Xianpeng, LU Xuge, WANG Zhiqiang. Review and prospect of researches on boilers´ flue gas acid dew point [J]. Huadian Technology, 2020, 42(9): 45-55.
[4]	YANG Mingming. Research on wind turbine power curve based on Nacelle Transfer Function [J]. Huadian Technology, 2020, 42(5): 50-54.
[5]	LIU Zhimin1,2, DING Yang1, XU Tingting1,BAI Yunshan1. Research on gas turbine combustion pressure fluctuation and the key technologies for its measurement [J]. Huadian Technology, 2019, 41(9): 1-5.
[6]	LI Haiyang，WANG Renlei，YOU Liangzhou，HENG Shiquan. Experimental study of dissolved oxygen’s effect on dissolved hydrogen analyzer of the main steam [J]. Huadian Technology, 2019, 41(7): 27-30.
[7]	WANG Xueli. Reasons analysis for tube blasting and preventive measures for superheater of 1000MW supercritical boiler [J]. Huadian Technology, 2019, 41(7): 70-72.
[8]	YE Luo，WU Jundong，CHEN Xian. Operation analysis of low temperature economizer system [J]. Huadian Technology, 2019, 41(6): 50-52.
[9]	WANG Zhoujun1,2，LI Xinghua2，TANG Lijun1，DUAN Quansheng2. Study on flow mixing and equalizing technique of primary air at inlet of medium speed coal mills [J]. Huadian Technology, 2019, 41(5): 17-21.
[10]	ZHANG Jibing，QIAO Xiaosan. Calculation and comparison of carbon emissions based on the default value and measured value of raw coal emission factor [J]. Huadian Technology, 2019, 41(3): 73-75.
[11]	SONG Xin. Analysis and solution for temperature fluctuation of turbine shaft seal steam [J]. Huadian Technology, 2019, 41(2): 46-48.
[12]	CAI Liangliang，GONG Shimin，TANG Bin，LI Shuai，ZHANG Lin，YUAN Quan. Research on automatic and seamless switching technology for virtual backup measurement and control units in smart substations [J]. Huadian Technology, 2019, 41(10): 30-34.
[13]	ZHU Hao. Discussion on the problem of power supply with different grids in thermal power plant [J]. Huadian Technology, 2018, 40(9): 25-27.
[14]	ZHENG Liwen. Measures to improve heating capacity of thermoelectric gas turbine in South Xinjiang Thermal Power Plant [J]. Huadian Technology, 2018, 40(9): 28-29.
[15]	HUANG Chengbin, ZHANG Yulin. Method for improving measurement accuracy of soft ground backfilling project [J]. Huadian Technology, 2018, 40(8): 21-22.

Reason analysis of beaker refusal of action and relevant countermeasure

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments