CN104091090A - Calculating method for equivalent sound level A of any point in transformer substation sound field - Google Patents
Calculating method for equivalent sound level A of any point in transformer substation sound field Download PDFInfo
- Publication number
- CN104091090A CN104091090A CN201410363127.XA CN201410363127A CN104091090A CN 104091090 A CN104091090 A CN 104091090A CN 201410363127 A CN201410363127 A CN 201410363127A CN 104091090 A CN104091090 A CN 104091090A
- Authority
- CN
- China
- Prior art keywords
- transformer
- point
- equivalent
- main
- transformer substation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The invention discloses a calculating method for an equivalent sound level A of any point in a transformer substation sound field. The method is characterized in that any point in the transformer substation sound field is defined as a point O, n main transformers are arranged in a transformer substation, and are marked as the main transformers i respectively, and the distance between the point O and the main transformers i in the transformer substation is Xi, and the equivalent sound level A Li (A) generated in the point O of the main transformers i is equal to aXi<3>+bXi<2>+cXi+di; the equivalent sound level A of any point O in the transformer substation sound field is specified in the specification. According to the method, the calculation result can accurately reflect the attenuation situation of noise of a large-scale power transformer along with the distance in the actual running, influences of effects including ground attenuation, air absorption and the like are comprehensively considered, and the calculation of the equivalent sound level A, including factory bound noise, of any point in the transformer substation sound field is rapid, accurate and close to the reality of production.
Description
Technical field
The present invention relates to the computing method of arbitrfary point equivalent A-weighted sound pressure level in a kind of transformer station sound field.
Background technology
The noise that substation operation produces is the Important Problems of paying close attention in project of transmitting and converting electricity environmental impact assessment and completion environmental protection inspection and acceptance, in recent years along with the high speed development of China's economic and the continuous quickening of urbanization process, for improve urban electricity supply reliability, improve power supply quality and reduce the loss of electric power transfer, the transformer station of voltage levels starts to enter city scope, and some is even deep in resident centralized residential district; When the corresponding expansion of electrical network scale, City Substation quantity increase, people's environmental consciousness is also strengthening, national environmental protection law enforcement dynamics is strengthening, the environmental impact of transformer station especially receives increasing concern about the environmental impact problem of transformer station's noise, and relevant complaint and dispute be increasing year by year also.In order to predict accurately the environmental impact of newly-built transformer station noise, analyze and the Engineering Control effect of calculating substation noise, understand that transformer station's Main Noise Sources and propagation law thereof and influence factor are key points.
At present, calculating for transformer station's sound field not yet has special standard to put into effect, in real work, be all about the evanescent mode of point sound source in application < < environmental impact assessment technology guide rule _ acoustic environment (HJ2[1] .4-2009) > >, consider again ground decay, the impact of the factors such as absorption of air, noise emission to factory circle of transformer station is calculated, the model of this simplification is large in transformer station's floor area, under the negligible condition of main sound source (being main-transformer) size, result of calculation and actual conditions are approximate, but seem not enough for taking up an area less transformer station, this be because now future position and main sound source relative distance be discontented with the approximate condition of foot point sound source.Therefore, be necessary to set up new predictive mode, to solve the computational problem of arbitrfary point equivalent A-weighted sound pressure level in transformer station's sound field.
Summary of the invention
The present invention is directed to now methodical limitation, aim to provide the computing method of arbitrfary point equivalent A-weighted sound pressure level in a kind of transformer station sound field, attenuation characteristic in conjunction with transformer station's main sound source (being main-transformer) noise, make a kind of computation schema that can accurately reflect the main-transformer noise transmission rule of actual motion, to quick and precisely calculating the arbitrfary point equivalent A-weighted sound pressure level that comprises factory circle of transformer station noise, thereby for newly-built substation project environmental impact assessment provides definite foundation, for formulating the control methods of projects of substation noise, provide Data support.
The present invention is that technical solution problem adopts following technical scheme:
In transformer station of the present invention sound field, the feature of the computing method of arbitrfary point equivalent A-weighted sound pressure level is:
In definition transformer station sound field, arbitrfary point is O point, and in transformer station, main-transformer is n altogether, and label is main-transformer i respectively, and i is 1,2,,,,, n; Described O point is X apart from the distance of main-transformer i in transformer station
i;
The equivalent A-weighted sound pressure level L that main-transformer i produces at O point
i(A) by formula (1), obtained:
L
i(A)＝aX
i 3+bX
i 2+cX
i+d
i (1)；
The equivalent A-weighted sound pressure level L (A) that in transformer station's sound field, arbitrfary point O is ordered is obtained by formula 2:
When transformer substation voltage grade is 110KV, in formula (1): a=-0.0006; B=0.044; C=-1.362;
When transformer substation voltage grade is 220KV, in formula (1): a=-0.0011; B=0.061; C=-1.525;
When transformer substation voltage grade is 500KV, in formula (1): a=-0.0015; B=0.075; C=-1.631;
D in formula (1)
iequivalent A-weighted sound pressure level for main-transformer i shell place.
The equivalent A-weighted sound pressure level at main-transformer i shell place is main-transformer i shell place apart from the spatial point equivalent A-weighted sound pressure level of ground 1.5m.D in formula
ifor the spatial point equivalent A-weighted sound pressure level of main-transformer i shell place apart from ground 1.5m.This is the preset parameter of main-transformer while dispatching from the factory, and can in its instructions or procurement contract, find occurrence.
In formula (1), the statistics of each parameter is as shown in table 1:
Each parametric statistics table in table 1 formula 1
The inventive method is based on a large amount of monitoring tests to existing transformer station sound field, obtain the relation between coefficient and transformer substation voltage grade in main-transformer noise attentuation function, with cubic function, its decay is carried out to matching, thereby the equivalent A-weighted sound pressure level to arbitrfary point in transformer station's sound field calculates, the noise condition in the time of can reflecting more accurately transformer actual motion.
Its Chinese style (1): L
i(A)=aX
i 3+ bX
i 2+ cX
i+ d
iin every constant determine the field experiment based on a large amount of, experimental design is as follows:
(1) from hundreds of transformer stations of Anhui Power Grid, filter out desirable experimental subjects, these transformer station's multidigits are in rural area, and external environment is comparatively simple, around substantially without the impact beyond transformer station's noise;
(2) experimental subjects all only has a main-transformer to put into operation at present, does not have influencing each other between different main-transformers;
(3) after being selected in 12 of nights the test duration, avoid to the full extent the impact of other activities on test process;
(4) according to research purpose, improve experimental apparatus, select jumbo memory device, set longer integral time, and continuous recording Monitoring Data is screened, reject noise, farthest reduced the impact of accidental factor on experimental result;
(5) by many instrument parallel monitorings, results averaged is to reduce systematic error as far as possible;
(6) choose opening in transformer station, every 1m, measuring point is set, thereby obtain this main-transformer noise attentuation curve, this curve is carried out to fitting of a polynomial, thereby obtain the value of each constant.
Compared with the prior art, beneficial effect of the present invention is embodied in:
1, the inventive method utilizes site test to carry out matching to the noise attentuation of each electric pressure main-transformer, and result of calculation approaches the reality of producing, and simple to operate, and result is accurate, successful.
When 2, application classic method is carried out transforming plant main transformer noise attentuation prediction, need meet point sound source design conditions, be that future position is greater than main transformer size to main-transformer distance, the inventive method is without considering these boundary conditions, also completely applicable for the situation that the occupation of land of main-transformer size compare great Er transformer station is relatively little.
3, use the inventive method, emission status that can factory circle of Accurate Prediction transformer station noise, can provide reference for the environmental impact assessment of new project.
Embodiment
In the present embodiment, in transformer station's sound field, the computing method of arbitrfary point equivalent A-weighted sound pressure level are:
In definition transformer station sound field, arbitrfary point is O point, and in transformer station, main-transformer is n altogether, and label is main-transformer i respectively, and i is 1,2,,,,, n; Described O point is X apart from the distance of main-transformer i in transformer station
i;
The equivalent A-weighted sound pressure level L that main-transformer i produces at O point
i(A) by formula (1), obtained:
L
i(A)＝aX
i 3+bX
i 2+cX
i+d
i (1)；
The equivalent A-weighted sound pressure level L (A) that in transformer station's sound field, arbitrfary point O is ordered is obtained by formula 2:
When transformer substation voltage grade is 110KV, in formula (1): a=-0.0006; B=0.044; C=-1.362;
When transformer substation voltage grade is 220KV, in formula (1): a=-0.0011; B=0.061; C=-1.525;
When transformer substation voltage grade is 500KV, in formula (1): a=-0.0015; B=0.075; C=-1.631;
D in formula (1)
iequivalent A-weighted sound pressure level for main-transformer i shell place.
The equivalent A-weighted sound pressure level at main-transformer i shell place is main-transformer i shell place apart from the spatial point equivalent A-weighted sound pressure level of ground 1.5m.D in formula
ifor the spatial point equivalent A-weighted sound pressure level of main-transformer i shell place apart from ground 1.5m.This is the preset parameter of main-transformer while dispatching from the factory, and can in its instructions or procurement contract, find occurrence.
In formula (1), the statistics of each parameter is as shown in table 1:
Each parametric statistics table in table 1 formula 1
The elite a certain 110kV of the putting into operation transformer station of getting, only there is at present a main transformer to put into operation, the equivalent A-weighted sound pressure level at its 1.5m place, main transformer shell distance ground is 54.0db (A), utilizes in the station that in the evanescent mode, the present invention of point sound source, method is calculated and actual monitoring obtains certain spot noise as shown in table 2 below.
The noise condition list of certain point in certain 110kV Substation Station that put into operation of table 2
Separately there is the 220kV transformer station putting into operation, in station, there are at present two main-transformer operations, wherein 1.5m place, #1 main-transformer shell distance ground equivalent A-weighted sound pressure level is 70.0db (A), 1.5m place, #2 main-transformer shell distance ground equivalent A-weighted sound pressure level is 68.8db (A), utilizes in the station that in the evanescent mode, the present invention of point sound source, method is calculated and actual monitoring obtains certain spot noise as shown in table 3 below.
Certain spot noise emission status list in certain 220kV Substation Station that put into operation of table 3
As can be seen here, in application the present invention, factory circle of the transformer station noise emission situation that calculates of method is more approaching with the result that actual monitoring obtains, and applies in < < environmental impact assessment technology guide rule _ acoustic environment (HJ2[1] .4-2009) > > the result that the evanescent mode about point sound source calculates larger with actual monitoring result error.
Claims (2)
- The computing method of arbitrfary point equivalent A-weighted sound pressure level in 1.Yi Zhong transformer station sound field, is characterized in that:In definition transformer station sound field, arbitrfary point is O point, and in transformer station, main-transformer is n altogether, and label is main-transformer i respectively, and i is 1,2,,,,, n; Described O point is X apart from the distance of main-transformer i in transformer station i;The equivalent A-weighted sound pressure level L that main-transformer i produces at O point i(A) by formula (1), obtained:L i(A)＝aX i 3+bX i 2+cX i+d i (1)；The equivalent A-weighted sound pressure level L (A) that in transformer station's sound field, arbitrfary point O is ordered is obtained by formula (2):When transformer substation voltage grade is 110KV, in formula (1): a=-0.0006; B=0.044; C=-1.362;When transformer substation voltage grade is 220KV, in formula (1): a=-0.0011; B=0.061; C=-1.525;When transformer substation voltage grade is 500KV, in formula (1): a=-0.0015; B=0.075; C=-1.631;D in formula (1) iequivalent A-weighted sound pressure level for main-transformer i shell place.
- 2. the computing method of arbitrfary point equivalent A-weighted sound pressure level in transformer station according to claim 1 sound field, is characterized in that: the equivalent A-weighted sound pressure level at described main-transformer i shell place is main-transformer i shell place apart from the spatial point equivalent A-weighted sound pressure level of ground 1.5m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410363127.XA CN104091090A (en) | 2014-07-28 | 2014-07-28 | Calculating method for equivalent sound level A of any point in transformer substation sound field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410363127.XA CN104091090A (en) | 2014-07-28 | 2014-07-28 | Calculating method for equivalent sound level A of any point in transformer substation sound field |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104091090A true CN104091090A (en) | 2014-10-08 |
Family
ID=51638806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410363127.XA Pending CN104091090A (en) | 2014-07-28 | 2014-07-28 | Calculating method for equivalent sound level A of any point in transformer substation sound field |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104091090A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106096184A (en) * | 2016-06-24 | 2016-11-09 | 中国电力科学研究院 | A kind of noise calculation method and system of transformator multiple spot Source Model based on sound intensity technique |
| CN106599394A (en) * | 2016-11-25 | 2017-04-26 | 国网上海市电力公司 | Modeling calculation method for noise sound field of transformer substation |
| CN110567576A (en) * | 2019-09-11 | 2019-12-13 | 中国电力科学研究院有限公司 | Method and device for determining reason for standard exceeding of factory boundary noise of transformer substation |
| CN113720441A (en) * | 2021-08-26 | 2021-11-30 | 国网上海市电力公司 | Transformer substation perimeter noise distribution reproduction method |
| CN117407650A (en) * | 2023-12-13 | 2024-01-16 | 中汽研新能源汽车检验中心(天津)有限公司 | Noise quality level evaluation method for driving motor system |
-
2014
- 2014-07-28 CN CN201410363127.XA patent/CN104091090A/en active Pending
Non-Patent Citations (3)
| Title |
|---|
| SANJAY PATIL 等: "Effect of load-generated transformer noise in a substation", 《EUROPEAN TRANSACTIONS ON ELECTRICAL POWER》 * |
| 周兵 等: "特高压交流变电站噪声测量与分析", 《高电压技术》 * |
| 杨敏 等: "220 kV城市户内变电站声场模拟与分析", 《东南大学学报(自然科学版)》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106096184A (en) * | 2016-06-24 | 2016-11-09 | 中国电力科学研究院 | A kind of noise calculation method and system of transformator multiple spot Source Model based on sound intensity technique |
| CN106096184B (en) * | 2016-06-24 | 2020-10-09 | 中国电力科学研究院 | Noise calculation method and system of transformer multipoint sound source model based on sound intensity method |
| CN106599394A (en) * | 2016-11-25 | 2017-04-26 | 国网上海市电力公司 | Modeling calculation method for noise sound field of transformer substation |
| CN110567576A (en) * | 2019-09-11 | 2019-12-13 | 中国电力科学研究院有限公司 | Method and device for determining reason for standard exceeding of factory boundary noise of transformer substation |
| CN113720441A (en) * | 2021-08-26 | 2021-11-30 | 国网上海市电力公司 | Transformer substation perimeter noise distribution reproduction method |
| CN113720441B (en) * | 2021-08-26 | 2023-09-12 | 国网上海市电力公司 | Substation perimeter noise distribution reproduction method |
| CN117407650A (en) * | 2023-12-13 | 2024-01-16 | 中汽研新能源汽车检验中心(天津)有限公司 | Noise quality level evaluation method for driving motor system |
| CN117407650B (en) * | 2023-12-13 | 2024-04-09 | 中汽研新能源汽车检验中心(天津)有限公司 | Noise quality level evaluation method for driving motor system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104091090A (en) | Calculating method for equivalent sound level A of any point in transformer substation sound field | |
| CN103400523B (en) | Open micro dynamic simulation and monitoring system for power system | |
| CN103150635B (en) | Power equipment O&M method | |
| CN106557828A (en) | A kind of long time scale photovoltaic is exerted oneself time series modeling method and apparatus | |
| CN103678931B (en) | Transformer substation coverage area energy efficiency assessing method based on precise measurement load data | |
| CN103116097B (en) | Device parameter online identification method based on multi-section hybrid measurement information | |
| CN107609332A (en) | A kind of method of converter power transformer far-field noise prediction | |
| CN204177718U (en) | Evaluate the electrochemical test system of the lower oil-gas pipeline corrosion of alternative stray current interference | |
| CN211375602U (en) | Mobile intelligent noise live-action cloud picture modeling system for transformer substation | |
| CN108614192B (en) | Distribution decision method for lightning monitoring device of power distribution network | |
| CN106203732A (en) | Error in dipping computational methods based on ITD and time series analysis | |
| CN105321122A (en) | Field authentication method for pollution area distribution map | |
| CN110991725A (en) | RBF ultra-short-term wind power prediction method based on wind speed frequency division and weight matching | |
| CN111063528B (en) | Active noise reduction equipment of transformer and transformer noise on-line monitoring system | |
| CN103018584A (en) | Measuring and verifying method for electric power and electric quantity conservation of electric power boost reconstruction | |
| CN106228468A (en) | A kind of probability simulation method of tidal current energy generating field output | |
| CN108090626A (en) | A kind of Meshing Method of distribution net gridding planning | |
| CN106126934A (en) | A kind of photovoltaic generation correlation metric acquisition methods | |
| CN105205572A (en) | Photovoltaic power generation output forecasting method based on EMD (Empirical Mode Decomposition) and Elman algorithm | |
| Cao et al. | [Retracted] An Operating Status Analysis System of Reactor Equipment Based on Voiceprint Recognition Technology | |
| Duan et al. | Heavy Overload Prediction Method of Distribution Transformer Based on GBDT | |
| Xu et al. | Analysis and research on precise control mode of outdoor substation noise | |
| Cooper et al. | COMPARISON OF COMPLIANCE RESULTS OBTAINED FROM THE VARIOUS WIND FARM STANDARDS USED IN AUSTRALIA. | |
| Cai et al. | Radiation noise prediction of outdoor substation based on improved ray tracing method | |
| CN107171314A (en) | Grid loss on-line calculation method based on trend distributed data after state estimation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141008 |
|
| WD01 | Invention patent application deemed withdrawn after publication |