Specific Equipment and Area - EAC District Office Substation

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Charles Hampton
5 years ago
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On the 13th of April 2007 at 10:00 am magnetic field measurements were performed for the District Office Substation. The substation of interest is located on Mykhnon Street in Nicosia.

1 On the 13th of April 2007 at 10:00 am magnetic field measurements were performed for the District Office Substation. The substation of interest is located on Mykhnon Street in Nicosia. {mosmap width='500' height='400' lat=' ' lon=' ' zoom='18' zoomtype='large' zoomnew='0' maptype='satellite' showmaptype='1' overview='0' text='district Office EAC Substation' tooltip='dwo' marker='1' align='center' key='abqiaaaa03cwbwhnzyjizsn-wwdqmhqctkyp5l8hb2mjngvvfkvpdgzbixqkqitrafigip chx6gplphdidvzga'} Σελίδα 1 / 21

Figure 1: EAC District Office Figure 2: EAC District Office outside Limiting exposure values have been provided by the ICNIRP recommendations and are

2 Figure 1: EAC District Office Figure 2: EAC District Office outside Limiting exposure values have been provided by the ICNIRP recommendations and are guidelines to many countries and organizations. The exposure limits at 50 Hz are tabulated in the following table according to the limits given by ICNIRP. Σελίδα 2 / 21

3 Reference levels for Occupational exposure ICNIRP Frequency Electric Field Strength, E (V/m) Magnetic Field Strength, H (A/m) Magnetic Flux Density, B (µt) 50 Hz Reference levels for General Public exposure ICNIRP Frequency Electric Field Strength, E (V/m) Magnetic Field Strength, H (A/m) Magnetic Flux Density, B (µt) 50 Hz Table 2: ICNIRP exposure limits for Occupational and General Public exposure The obtained results for the RMS fields inside and outside the substation are shown in tables 3 and 4 respectively in the case when the substation is on. A comparison is also made with the ICNIRP recommendations. Σελίδα 3 / 21

4 District Office Substation: Fields Inside Substation when building was on Distance from Side /m Maximum Magnetic Field / µt at Z Height /m - Percentage of ICNIRP Occupational Standard /% 0.3m 1 m 1.75 m Basement Field Measurements (Distance from Left Inside Wall) 2m from Left Side 2,82 0,56% 0,95 0,19% 0,53 0,11% 4m from Left Side 2,48 0,50% 1,37 0,27% Σελίδα 4 / 21

5 0,94 0,19% Transformer Room 1 Field Measurements (Distance from Right Inside Wall) 3m from Right Side 0,43 0,09% 0,29 0,06% 0,43 0,09% 5m from Right Side 0,44 0,09% 0,41 0,08% 0,43 0,09% 9m from Right Side 1,15 0,23% 0,41 0,08% 0,42 0,08% Σελίδα 5 / 21

6 Transformer Room 2 Field Measurements (Distance from Right Inside Wall) 3m from Right Side 0,40 0,08% 0,29 0,06% 0,43 0,09% 5m from Right Side 0,49 0,10% 0,61 0,12% 0,50 0,10% 9m from Right Side 0,60 0,12% 0,40 0,08% 0,32 0,06% Transformer Room 3 Field Measurements (Distance from Right Inside Wall) Σελίδα 6 / 21

7 3m from Right Side 0,22 % 0,24 0,05% 0,50 0,10% 5m from Right Side 0,47 0,09% 0,56 0,11% 0,76 0,15% 9m from Right Side 0,52 0,10% 0,72 0,14% 1,02 0,20% Floor 1 Room Field Measurements Behind of 22-11KV Switchgear A Σελίδα 7 / 21

8 0,07 0,01% 0,09 0,02% 0,13 % In Front of 22-11KV Switchgear A 0,01% 0,01% 0,01% Behind of 22-11KV Switchgear B 0,01% 0,01% 0,02 0,00% In Front of 22-11KV Switchgear B 0,06 0,01% Σελίδα 8 / 21

9 0,01% 0,01% Behind of Switchgear 132KV 0,41 0,08% 0,29 0,06% 0,19 % In Front Switchgear 132KV 0,21 % 0,15 % 0,16 % Control Room Field Measurements In Front of Control Systems 0,15 % 0,10 0,02% 0,08 Σελίδα 9 / 21

10 0,02% Point A 0,46 0,09% Point B 0,16 % Point C 0,12 0,02% Table 3: Maximum Field Measurements inside District Office Substation (substation on) Σελίδα 10 / 21

11 District Office Substation: Fields Outside Substation when building was on Distance from Side /m Maximum Magnetic Field / µt at Z Height /m - Percentage of ICNIRP General Public Standard /% 0.3m 1 m 1.75 m Substation Left Side Field Measurements Left Outside Wall 2,22 2,22% Back Outside Wall 0,08 0,08% Σελίδα 11 / 21

12 Right Outside Wall 0,15 0,15% Front Outside Wall 0,48 0,48% Table 4: Maximum Field Measurements outside District Office Substation (substation on) Accordingly the obtained results for the RMS fields inside and outside the substation in the case when District office Substation was powered off, are shown in tables 5 and 6 respectively. A comparison is again made with the ICNIRP recommendations. District Office Substation: Fields Inside Substation when building was off Distance from Side /m Maximum Magnetic Field / Î¼T at Z Height /m - Percentage of ICNIRP Occupational Standard /% Σελίδα 12 / 21

13 0.3m 1 m 1.75 m Basement Field Measurements (Distance from Left Inside Wall) 2m from Left Side 0,006% 0,005% 0,008% 4m from Left Side 0,008% 0,007% 0,05 0,011% Transformer Room 1 Field Measurements (Distance from Right Inside Wall) 3m from Right Side Σελίδα 13 / 21

14 0,05 0,009% 0,007% 0,10 0,020% 5m from Right Side 0,006% 0,006% 0,06 0,011% 9m from Right Side 0,09 0,018% 0,007% 0,02 0,005% Transformer Room 2 Field Measurements (Distance from Right Inside Wall) 3m from Right Side 0,02 0,004% Σελίδα 14 / 21

15 0,005% 0,05 0,009% 5m from Right Side 0,008% 0,05 0,009% 0,10 0,019% 9m from Right Side 0,008% 0,006% 0,006% Transformer Room 3 Field Measurements (Distance from Right Inside Wall) 3m from Right Side 0,009% 0,008% Σελίδα 15 / 21

16 0,06 0,013% 5m from Right Side 0,05 0,009% 0,008% 0,14 0,028% 9m from Right Side 0,06 0,012% 0,05 0,010% 0,06 0,011% Floor 1 Room Field Measurements Behind of 22-11KV Switchgear A 0,007% 0,10 0,020% 0,14 0,028% Σελίδα 16 / 21

17 In Front of 22-11KV Switchgear A 0,01 0,002% 0,01 0,001% 0,01 0,002% Behind of 22-11KV Switchgear B 0,02 0,004% 0,02 0,005% 0,06 0,012% In Front of 22-11KV Switchgear B 0,006% 0,005% 0,006% Behind of Switchgear 132KV 0,01 Σελίδα 17 / 21

18 0,002% 0,02 0,004% 0,02 0,004% In Front Switchgear 132KV 0,02 0,005% 0,005% 0,006% Control Room Field Measurements In Front of Control Systems 0,11 0,02% 0,093 0,019% 0,07 0,01% Point A 0,69 Σελίδα 18 / 21

19 0,138% Point B 0,13 0,026% Point C 0,13 0,026% Table 5: Maximum Field Measurements inside District Office Substation (substation off) District Office Substation: Fields Outside Substation when building was off Distance from Side /m Maximum Magnetic Field / Î¼T at Z Height /m - Percentage of ICNIRP General Public Standard /% 0.3m Σελίδα 19 / 21

20 1 m 1.75 m Substation Left Side Field Measurements Left Outside Wall 1,77 1,77% Back Outside Wall % Right Outside Wall 0,10 Σελίδα 20 / 21

21 0,10% Front Outside Wall 0,41 0,41% Table 6: Maximum Field Measurements outside District Office Substation (substation off) Σελίδα 21 / 21

High Voltage Overhead Power Lines, 21 Georgiou Eikosari, Dali

High Voltage Overhead Power Lines, 21 Georgiou Eikosari, Dali On the 22nd of July 2009 at 17:30 pm, electric and magnetic field measurements were performed for 21 Georgiou Eikosari, Dali overhead power lines. The EMF measurements were performed inside and outside