Occupational exposure to electric fields and currents associated with 110 kv substation tasks

Korpinen, Leena; Kuisti, Harri; Tarao, Hiroo; Elovaara, Jarmo

doi:10.1002/bem.21711

Cited by 9 publications

(5 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In our earlier articles, we measured occupational electric field exposure in different tasks at 400 and 110 kV substations and compared our results to guidelines [Korpinen et al, 2009, 2011a, b, 2012a]. We typically performed measurements when the sun was shining and did not note the impact of humidity on the measured values.…”

Section: Results Of Statistical Analyses From Measurements In the CLImentioning

confidence: 99%

“…When performing the measurements of occupational electric field exposure in different tasks at 400 and 110 kV substations, as described in our earlier articles [Korpinen et al, 2009, 2011a, b, 2012a], the weather was typically sunny and never rainy. We also calculated the relative humidity and temperature during those measurements.…”

Section: Results Of Statistical Analyses From Measurements In the CLImentioning

confidence: 99%

See 1 more Smart Citation

Influence of relative humidity on analyzing electric field exposure using ELF electric field measurements

Korpinen

Kuisti²,

Tarao

et al. 2013

Bioelectromagnetics

Self Cite

View full text Add to dashboard Cite

The objective of the study was to investigate the influence of humidity on analyzing electric field exposure using extremely low frequency (ELF) electric field measurements. The study included 322 measurements in a climate room. We used two commercial three-axis meters, EFA-3 and EFA-300, and employed two measurement techniques in the climate room where we varied the temperature from 15 to 25 °C, the relative humidity from 55% to 95%, and the electric field from 1 to 25 kV/m. We calculated Pearson correlations between humidity and percentage errors for all data and for data at different levels of humidity. When the relative humidity was below 70%, the results obtained by the different measurement methods in terms of percentage errors were of the same order of magnitude for the considered temperatures and field strength, but the results were less reliable when the relative humidity was higher than 80%. In the future, it is important to take humidity into account when electric field measurement results will be compared to the values given in different exposure guidelines.

show abstract

Section: Results Of Statistical Analyses From Measurements In the CLImentioning

confidence: 99%

Section: Results Of Statistical Analyses From Measurements In the CLImentioning

confidence: 99%

Influence of relative humidity on analyzing electric field exposure using ELF electric field measurements

Korpinen

Kuisti²,

Tarao

et al. 2013

Bioelectromagnetics

Self Cite

View full text Add to dashboard Cite

show abstract

“…However, power system practitioners are inevitably exposed to complex electric fields because they have to work close to high-voltage electrical equipment. If the practitioners can be equipped with a portable safety protection instrument that can measure the electric field intensity in the working area in real time and issue safety warnings, their safety and health could be ensured [ 8 , 9 , 10 ]. In this paper, a portable protection instrument is designed for the practitioners.…”

Section: Introductionmentioning

confidence: 99%

A Power-Frequency Electric Field Sensor for Portable Measurement

Xiao

Zheng

et al. 2018

Sensors

View full text Add to dashboard Cite

In this paper, a new type of electric field sensor is proposed for the health and safety protection of inspection staff in high-voltage environments. Compared with the traditional power frequency electric field measurement instruments, the portable instrument has some special performance requirements and, thus, a new kind of double spherical shell sensor is presented. First, the mathematical relationships between the induced voltage of the sensor, the output voltage of the measurement circuit, and the original electric field in free space are deduced theoretically. These equations show the principle of the proposed sensor to measure the electric field and the effect factors of the measurement. Next, the characteristics of the sensor are analyzed through simulation. The simulation results are in good agreement with the theoretical analysis. The influencing rules of the size and material of the sensor on the measurement results are summarized. Then, the proposed sensor and the matching measurement system are used in a physical experiment. After calibration, the error of the measurement system is discussed. Lastly, the directional characteristic of the proposed sensor is experimentally tested.

show abstract

“…The highest maximum average current density in the neck was 1.8 mA/m 2 (calculated internal electric field 9.0–18.0 mV/m) and the highest contact current was 79.4 mA in the task ‘Maintenance of an operating device of a circuit breaker from a service platform. '[ 5 ]…”

Section: Introductionmentioning

confidence: 99%

Occupational exposure to electric and magnetic fields during tasks at ground or floor level at 110 kV substations in Finland

Korpinen

Pääkkönen

2016

International Journal of Occupational Safety and Ergonomics

View full text Add to dashboard Cite

The aim was to investigate occupational exposure to electric and magnetic fields during tasks at ground or floor level at 110 kV substations in Finland and to compare the measured values to Directive 2013/35/EU. Altogether, 347 electric field measurements and 100 magnetic field measurements were performed. The average value of all electric fields was 2.3 kV/m (maximum 6.4 kV/m) and that of magnetic fields was 5.8 µT (maximum 51.0 µT). It can be concluded that the electric and magnetic field exposure at ground or floor level is typically below the low action levels of Directive 2013/35/EU. The transposition of the directive will not create new needs to modify the work practice of the evaluated tasks, which can continue to be performed as before. However, for workers with medical implants, the exposure may be high enough to cause interference.

show abstract

Occupational exposure to electric fields and currents associated with 110 kv substation tasks

Cited by 9 publications

References 5 publications

Influence of relative humidity on analyzing electric field exposure using ELF electric field measurements

Influence of relative humidity on analyzing electric field exposure using ELF electric field measurements

A Power-Frequency Electric Field Sensor for Portable Measurement

Occupational exposure to electric and magnetic fields during tasks at ground or floor level at 110 kV substations in Finland

Contact Info

Product

Resources

About