Evaluation uncertainty of power frequency electric field for a Power Project in inner Mongolia
10.3760/cma.j.issn.1001-9391.2018.09.021
- VernacularTitle: 内蒙古某发电厂主变压器工频电场测量的不确定度评定
- Author:
Baofeng LIU
1
;
Jing LIU
;
Cheng HAN
;
Xiaoxiao GUO
;
Qiang ZENG
Author Information
1. Institute of Occupational Disease Prevention and Control, Tianjin Centers for Disease Control and Prevention, Tianjin 300011, China
- Publication Type:Journal Article
- Keywords:
Power plant;
Power frequency electric field;
Measurement;
Uncertainty
- From:
Chinese Journal of Industrial Hygiene and Occupational Diseases
2018;36(9):704-706
- CountryChina
- Language:Chinese
-
Abstract:
Objective:With the measurement and uncertainty analysis of the power frequency electric field of the main transformer in the power station, the source of uncertainty, its quantitative calculation, the synthetic assessment method and the reporting method of the measurement results are described to ensure the reliability of the power frequency electric field measurement data.
Methods:Referring to the "Measurement of power frequency electric field in the workplace" (GBZ/T189.3-2007) , "Labour environment monitoring technological specification of electric power industry Partt7: Monitoring of power frequency electromagnetic fields" (DL/T 799.7-2010) and "Evaluation and Expression of Uncertainty in Measurement" (JJF 1059.1-2012) , the uncertainty of power frequency electric field measurement data of the main transformer of a power plant was analyzed and the extended uncertainty was obtained.
Results:The main source of the uncertainty of power frequency electric field measurement was the measurement of repetitive operation, and the expanded uncertainty of power frequency electric field was 0.09 kV/m.
Conclusion:When reporting the results of power frequency electric field measurement, the measurement uncertainty should be used simultaneously to quantify the quality of the measurement results. This method has strong practicability and operability, which can meet the requirements of uncertainty evaluation of power frequency electric field measurement results.
