A Preliminary Study on Control Indices and Emission Limits of Substation Noise
A-weighted networks underestimate the impact of low-frequency noise to some extent. Substation noise is a typical low-frequency noise with several tonalities, so it is necessary to further optimize the control indices and emission limits of substation noise. 280 subjects were randomly recruited, and...
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EDP Sciences
2024-01-01
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| Series: | E3S Web of Conferences |
| Online Access: | https://www.e3s-conferences.org/articles/e3sconf/pdf/2024/128/e3sconf_icaeer2024_02003.pdf |
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| author | Zhang Xiang Chen Xingwang Fang Xiaojian Shi Yuzhu Lu Lingyun Chen Yuhua Di Guoqing |
| author_facet | Zhang Xiang Chen Xingwang Fang Xiaojian Shi Yuzhu Lu Lingyun Chen Yuhua Di Guoqing |
| author_sort | Zhang Xiang |
| collection | DOAJ |
| description | A-weighted networks underestimate the impact of low-frequency noise to some extent. Substation noise is a typical low-frequency noise with several tonalities, so it is necessary to further optimize the control indices and emission limits of substation noise. 280 subjects were randomly recruited, and 111 noise samples from 110-1000 kV substations were used to carry out listening tests of noise annoyance. The mean noise annoyance (Ā) of each sound sample was obtained, and the models between any two of Ā, NR, and LAeq were established respectively. The limits of LAeq of Classes 1-4 functional areas of sound environment in GB 12348-2008 were substituted into the afore-mentioned models to determine the NR number. Based on the NR curve, the control limits of sound pressure level of substation noise were determined at each 1/1 octave band from 31.5 Hz to 500 Hz. Results showed that Ā increased by about 1 for every 5 dBA increase in LAeq when LAeq was 45-70 dBA. At the same LAeq, Ā of 750-1000 kV substation noise was 0.24-1.59 higher than that of 110-500 kV substation noise. It was recommended to divide substations into two groups according to their voltage levels. Meanwhile, the day-time and night-time control values of Ā were clarified if the limits of LAeq in Classes 1-4 were implemented. The results can provide a basis for controlling low-frequency noise in substations. |
| format | Article |
| id | doaj-art-2f58c8cb71e54e0782a7267b5856e887 |
| institution | OA Journals |
| issn | 2267-1242 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | EDP Sciences |
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| series | E3S Web of Conferences |
| spelling | doaj-art-2f58c8cb71e54e0782a7267b5856e8872025-08-20T02:19:35ZengEDP SciencesE3S Web of Conferences2267-12422024-01-015980200310.1051/e3sconf/202459802003e3sconf_icaeer2024_02003A Preliminary Study on Control Indices and Emission Limits of Substation NoiseZhang Xiang0Chen Xingwang1Fang Xiaojian2Shi Yuzhu3Lu Lingyun4Chen Yuhua5Di Guoqing6Central Southern China Electric Power Design Institute Co., LTD. of China Power Engineering Consulting GroupCentral Southern China Electric Power Design Institute Co., LTD. of China Power Engineering Consulting GroupCentral Southern China Electric Power Design Institute Co., LTD. of China Power Engineering Consulting GroupCentral Southern China Electric Power Design Institute Co., LTD. of China Power Engineering Consulting GroupCollege of Environmental & Resource Sciences of Zhejiang UniversityCollege of Environmental & Resource Sciences of Zhejiang UniversityCollege of Environmental & Resource Sciences of Zhejiang UniversityA-weighted networks underestimate the impact of low-frequency noise to some extent. Substation noise is a typical low-frequency noise with several tonalities, so it is necessary to further optimize the control indices and emission limits of substation noise. 280 subjects were randomly recruited, and 111 noise samples from 110-1000 kV substations were used to carry out listening tests of noise annoyance. The mean noise annoyance (Ā) of each sound sample was obtained, and the models between any two of Ā, NR, and LAeq were established respectively. The limits of LAeq of Classes 1-4 functional areas of sound environment in GB 12348-2008 were substituted into the afore-mentioned models to determine the NR number. Based on the NR curve, the control limits of sound pressure level of substation noise were determined at each 1/1 octave band from 31.5 Hz to 500 Hz. Results showed that Ā increased by about 1 for every 5 dBA increase in LAeq when LAeq was 45-70 dBA. At the same LAeq, Ā of 750-1000 kV substation noise was 0.24-1.59 higher than that of 110-500 kV substation noise. It was recommended to divide substations into two groups according to their voltage levels. Meanwhile, the day-time and night-time control values of Ā were clarified if the limits of LAeq in Classes 1-4 were implemented. The results can provide a basis for controlling low-frequency noise in substations.https://www.e3s-conferences.org/articles/e3sconf/pdf/2024/128/e3sconf_icaeer2024_02003.pdf |
| spellingShingle | Zhang Xiang Chen Xingwang Fang Xiaojian Shi Yuzhu Lu Lingyun Chen Yuhua Di Guoqing A Preliminary Study on Control Indices and Emission Limits of Substation Noise E3S Web of Conferences |
| title | A Preliminary Study on Control Indices and Emission Limits of Substation Noise |
| title_full | A Preliminary Study on Control Indices and Emission Limits of Substation Noise |
| title_fullStr | A Preliminary Study on Control Indices and Emission Limits of Substation Noise |
| title_full_unstemmed | A Preliminary Study on Control Indices and Emission Limits of Substation Noise |
| title_short | A Preliminary Study on Control Indices and Emission Limits of Substation Noise |
| title_sort | preliminary study on control indices and emission limits of substation noise |
| url | https://www.e3s-conferences.org/articles/e3sconf/pdf/2024/128/e3sconf_icaeer2024_02003.pdf |
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