CN103033259A - Converting station primary device acoustic power level measuring structure and method - Google Patents
Converting station primary device acoustic power level measuring structure and method Download PDFInfo
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- CN103033259A CN103033259A CN2012105719271A CN201210571927A CN103033259A CN 103033259 A CN103033259 A CN 103033259A CN 2012105719271 A CN2012105719271 A CN 2012105719271A CN 201210571927 A CN201210571927 A CN 201210571927A CN 103033259 A CN103033259 A CN 103033259A
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Abstract
The invention provides a converting station primary device acoustic power level measuring structure which comprises a measured converting station primary device. The converting station primary device acoustic power level measuring structure is characterized in that a horizontal circumferential outer contour of the measured converting station primary device is a reference emitting surface, a measuring contour surface is arranged at the position of 0.3 meter to 2 meters outside the reference emitting surface, the measuring contour surface is evenly provided with a plurality of acoustic signal probes, the spacing between two horizontal adjacent acoustic signal probes in the plurality of acoustic signal probes is equal to the spacing between two lengthways adjacent acoustic signal probes in the plurality of acoustic signal probes, the spacings are all of 0.5 meter to 1.5 meters, and each acoustic signal probe is supported by a corresponding measurement bracket. Compared with the prior art, the converting station primary device acoustic power level measuring structure can reflect the noise generated by the converting station primary device during practical work better, and thus great significance is achieved for the treatment of the converting station noise.
Description
Technical field
The present invention relates to high voltage power transmission and transforming engineering electromagnetic environment studying technological domain, refer to particularly measurement structure and the method for a kind of transformer station main equipment sound power level.
Technical background
Fast development along with the power grid construction cause, the government and society public is more and more higher to the environmental protection requirement, and the addressing of transformer station is being satisfied in the situation of the quality of power supply, have to be loaded and distribute and restriction that radius of electricity supply requires and be selected in place close to resident's inhabitation, this has caused the great attention of various circles of society so that transformer station's noise problem becomes comparatively outstanding.
Carry out transformer station noise abatement research, to noise source processings of eliminating the noise, this just need obtain comparatively accurately main equipment noise level and frequency characteristic to effective method exactly the most, and analyzing the reason that noise produces from mechanism, thereby it is tactful to propose improvement.High-tension power transmission and transformation equipment only is made in the separate unit test under the rated voltage usually when doing the test of dispatching from the factory, the just idle operator lamp level that obtains; And equipment is installed to after the scene, noise often is doubled and redoubled along with the increase of transmission power, for general noise measuring method, owing to affected by the noise of contiguous high-tension apparatus, existing method is difficult in the case the noise level of a certain power transmission and transforming equipment be made effective measurement.
Summary of the invention
Purpose of the present invention is exactly measurement structure and the method that a kind of transformer station main equipment sound power level will be provided, and this structure and method can be obtained under the actual condition ruuning situation, the noise level of transformer station's main equipment and sound power level.
For realizing this purpose, the measuring method of transformer station's main equipment sound power level that the present invention is designed is characterized in that it comprises the steps:
Step 1: the circumferential outline of level of setting tested transformer station main equipment is the benchmark surface of emission;
Step 2: outside the benchmark surface of emission 0.3 ~ 2m place arrange parallel with the benchmark surface of emission, and for the virtual measurement contoured surface of acoustical signal measurement;
Step 3: a plurality of acoustical signal probes evenly are set on above-mentioned measurement contoured surface, spacing between horizontal two adjacent acoustical signals are popped one's head in above-mentioned a plurality of acoustical signal probe equates with the spacing between two vertically adjacent acoustical signals are popped one's head in, and spacing is 0.5 ~ 1.5m, and above-mentioned each acoustical signal probe is by the measurement stent support of correspondence;
Step 4: described each acoustical signal probe induces respectively the noise signal of the corresponding measuring point of tested transformer station main equipment;
Step 5: the noise signal of described each acoustical signal probe output is all inputted in the computing machine, and computing machine goes out the sound power level of tested transformer station main equipment according to above-mentioned noise signal calculation of parameter.
Tested transformer station main equipment is in running order all the time in the described whole measurement operation.
Described tested transformer station main equipment is transformer.
In the technique scheme, when the air cooling equipment of tested transformer station main equipment is out of service, the measurement profile identity distance benchmark surface of emission 0.3m of planning.
In the technique scheme, when tested transformer is the dry-type transformer of unprotect shell, the measurement profile identity distance benchmark surface of emission 1m of planning.
In the technique scheme, when the air cooling equipment of tested transformer station main equipment puts into operation, the measurement profile identity distance benchmark surface of emission 2m of planning.
The concrete grammar that calculates the sound power level of tested transformer station main equipment in the described step 5 is: by area S(formula 1 and the formula 2 of computation and measurement contoured surface), the average sound intensity level
(formula 3) can try to achieve transformer sound power level L
WA(formula 4).
Measurement for distance benchmark surface of emission 0.3m place:
S=1.25hl
m （1）
In the formula: h is the height of transformer, for the dry-type transformer of unprotect shell, refers to iron core and frame height thereof, l
mGirth for the wide face of measuring wheel this moment;
Measurement for distance benchmark surface of emission 2m place:
S=(h+2)l
m （2）
In the formula: h is oil tank of transformer height or the cooling device height that comprises fan, l
mGirth for the wide face of measuring wheel this moment;
In the formula: N is that the measuring point sum is the number of acoustical signal probe.L
IAiThe A weighted sound intensity level of each measuring point;
In the formula: S
0Be reference area, S
0Be 1m
2
The measurement structure of a kind of transformer station main equipment sound power level, comprise tested transformer station main equipment, it is characterized in that: the circumferential outline of level of described tested transformer station main equipment is the benchmark surface of emission, outer 0.3 ~ 2m the place of the benchmark surface of emission arranges the measurement contoured surface, evenly be provided with a plurality of acoustical signal probes on the described measurement contoured surface, spacing between horizontal two adjacent acoustical signals are popped one's head in above-mentioned a plurality of acoustical signal probe equates with the spacing between two vertically adjacent acoustical signals are popped one's head in, and spacing is 0.5 ~ 1.5m, and above-mentioned each acoustical signal probe is by the measurement stent support of correspondence.
The described benchmark surface of emission is parallel with the measurement contoured surface.
Said method provided by the invention is so that technician at the scene noise level and the sound power level of transformer station's main equipment under the Measurement accuracy actual condition.Only when transformer station's main equipment dispatches from the factory, carry out the idle operator lamp horizontal survey in the noise measurement compared to existing technology under this transformer station main equipment actual condition, more can allow the technician fully understand noise level and the frequency characteristic of transformer station's main equipment.The noise that the present invention can produce in the time of more reflecting transformer station's main equipment real work compared to existing technology has great importance to the improvement of transformer station's noise.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the distribution schematic diagram of acoustical signal probe on the measurement contoured surface among the present invention;
Wherein, 1-tested transformer station main equipment, 2-benchmark surface of emission, 3-measurement contoured surface, 4-acoustical signal probe, 5-measurement support.
Embodiment
The present invention is described in further detail below in conjunction with the drawings and specific embodiments:
The measurement structure of a kind of transformer station main equipment sound power level among the figure shown in 1 and 2, comprise tested transformer station main equipment 1, the circumferential outline of level of tested transformer station main equipment 1 is the benchmark surface of emission 2, the benchmark surface of emission 2 outer 0.3 ~ 2m places arrange measures contoured surface 3, measure and evenly be provided with a plurality of acoustical signal probes 4 on the contoured surface 3, the spacing that horizontal two adjacent acoustical signals are popped one's head between 4 in above-mentioned a plurality of acoustical signal probe 4 equates with the spacing that two vertically adjacent acoustical signals are popped one's head between 4, and spacing is 0.5 ~ 1.5m, and above-mentioned each acoustical signal probe 4 supports by the measurement support 5 of correspondence.
In the technique scheme, the benchmark surface of emission 2 is parallel with measurement contoured surface 3.
In the technique scheme, every row's acoustical signal probe 4 preferably has 6.
The measuring method of a kind of transformer station main equipment sound power level, it comprises the steps:
Step 1: the circumferential outline of level of setting tested transformer station main equipment (1) is the benchmark surface of emission 2, and the circumferential outline of described level is the horizontal circumferential exterior surface of tested transformer station main equipment 1;
Step 2: 0.3 ~ 2m place arranges parallelly with the benchmark surface of emission 2 outside the benchmark surface of emission 2, and is used for the virtual measurement contoured surface 3 of acoustical signal measurement, and above-mentioned measurement contoured surface 3 is in order to determine acoustical signal pop one's head in 4 installation site and virtual out face;
Step 3: a plurality of acoustical signal probes 4 evenly are set on above-mentioned measurement contoured surface 3, the spacing that horizontal two adjacent acoustical signals are popped one's head between 4 in above-mentioned a plurality of acoustical signal probe 4 equates with the spacing that two vertically adjacent acoustical signals are popped one's head between 4, and spacing is 0.5 ~ 1.5m, and above-mentioned each acoustical signal probe 4 supports by the measurement support 5 of correspondence;
Step 4: each acoustical signal probe 4 induces respectively the noise signal of tested transformer station main equipment 1 corresponding measuring point;
Step 5: the noise signal of each acoustical signal probe 4 output is all inputted in the computing machine, and computing machine goes out the sound power level of tested transformer station main equipment 1 according to above-mentioned noise signal calculation of parameter.
In the technique scheme, tested transformer station main equipment 1 is in running order all the time in the described whole measurement operation.
In the technique scheme, described tested transformer station main equipment 1 is transformer.
In the technique scheme, when the air cooling equipment of tested transformer station main equipment 1 was out of service, the measurement contoured surface 3 of planning was apart from benchmark surface of emission 0.3m.When tested transformer was the dry-type transformer of unprotect shell, the measurement contoured surface 3 of planning was apart from benchmark surface of emission 1m.When the air cooling equipment of tested transformer station main equipment 1 put into operation, the measurement contoured surface 3 of planning was apart from benchmark surface of emission 2m.Above-mentioned measurement contoured surface 3 has been guaranteed operating personnel's safety apart from the design of the benchmark surface of emission 2 distances.
As everyone knows, because the noise of hearing that the transmission facilities such as transformer send is to be caused by the magnetic hysteresis dilatation of iron core and the electromagnetic force in winding, fuel tank and the magnetic shielding.Magnetic field is to bring out core-lamination stack longitudinally to vibrate the principal ingredient that the noise that produces is transformer noise.Electric current produces electromagnetic force by meeting in winding in winding.In addition, stray field also can make structural member produce vibration.Square being directly proportional of electromagnetic force (and vibration amplitude) and electric current, and square being directly proportional of the acoustical power of emission and vibration amplitude.Therefore, the acoustical power of emission and load current have relation clearly.Vibration in the device body (assembly of iron core and winding) can make again fuel tank, magnetic shielding and wireway (if there is) produce resonance.So it is the benchmark surface of emission 2 that the present invention selects the circumferential outline of level of tested transformer station main equipment 1.
Among the present invention, the concrete grammar that calculates the sound power level of tested transformer station main equipment 1 in the described step 5 is: by area S(formula 1 and the formula 2 of computation and measurement contoured surface 3), the average sound intensity level
(formula 3) can try to achieve transformer sound power level L
WA(formula 4).
Measurement for distance benchmark surface of emission 0.3m place:
S=1.25hl
m （1）
In the formula: h is the height of transformer, for the dry-type transformer of unprotect shell, refers to iron core and frame height thereof, l
mGirth for the wide face 3 of measuring wheel this moment;
Measurement for distance benchmark surface of emission 2m place:
S=(h+2)l
m （2）
In the formula: h is oil tank of transformer height or the cooling device height that comprises fan, l
mGirth for the wide face 3 of measuring wheel this moment;
In the formula: N is that the measuring point sum is the number of acoustical signal probe 4.L
IAiThe A weighted sound intensity level of each measuring point;
In the formula: S
0Be reference area, S
0Be 1m
2
The content that instructions is not described in detail belongs to the known prior art of this area professional and technical personnel.
Claims (9)
1. the measuring method of transformer station's main equipment sound power level is characterized in that it comprises the steps:
Step 1: the circumferential outline of level of setting tested transformer station main equipment (1) is the benchmark surface of emission (2);
Step 2: outside the benchmark surface of emission (2) 0.3 ~ 2m place arrange parallel with the benchmark surface of emission (2), and for the virtual measurement contoured surface (3) of acoustical signal measurement;
Step 3: a plurality of acoustical signal probes (4) evenly are set on above-mentioned measurement contoured surface (3), the spacing that horizontal two adjacent acoustical signals are popped one's head between (4) in above-mentioned a plurality of acoustical signal probes (4) equates with the spacing that two vertically adjacent acoustical signals are popped one's head between (4), and spacing is 0.5 ~ 1.5m, and above-mentioned each acoustical signal probe (4) supports by the measurement support (5) of correspondence;
Step 4: described each acoustical signal probe (4) induces respectively the noise signal of the corresponding measuring point of tested transformer station main equipment (1);
Step 5: the noise signal of described each acoustical signal probe (4) output is all inputted in the computing machine, and computing machine goes out the sound power level of tested transformer station main equipment (1) according to above-mentioned noise signal calculation of parameter.
2. the measuring method of transformer station according to claim 1 main equipment sound power level, it is characterized in that: tested transformer station main equipment (1) is in running order all the time in the described whole measurement operation.
3. the measuring method of transformer station according to claim 1 main equipment sound power level, it is characterized in that: described tested transformer station main equipment (1) is transformer.
4. the measuring method of transformer station according to claim 1 main equipment sound power level, it is characterized in that: when the air cooling equipment of tested transformer station main equipment (1) was out of service, the measurement contoured surface (3) of planning was apart from the benchmark surface of emission (2) 0.3m.
5. the measuring method of transformer station according to claim 3 main equipment sound power level, it is characterized in that: when tested transformer was the dry-type transformer of unprotect shell, the measurement contoured surface (3) of planning was apart from the benchmark surface of emission (2) 1m.
6. the measuring method of transformer station according to claim 3 main equipment sound power level, it is characterized in that: when the air cooling equipment of tested transformer station main equipment (1) put into operation, the measurement contoured surface (3) of planning was apart from the benchmark surface of emission (2) 2m.
7. the measuring method of transformer station according to claim 1 main equipment sound power level, it is characterized in that: the concrete grammar that calculates the sound power level of tested transformer station main equipment (1) in the described step 5 is: by area S(formula 1 and the formula 2 of computation and measurement contoured surface (3)), the average sound intensity level
(formula 3) can try to achieve transformer sound power level L
WA(formula 4).
Measurement for distance benchmark surface of emission 0.3m place:
S=1.25hl
m （1）
In the formula: h is the height of transformer, for the dry-type transformer of unprotect shell, refers to iron core and frame height thereof, l
mGirth for the wide face of measuring wheel this moment (3);
Measurement for distance benchmark surface of emission 2m place:
S=(h+2)l
m （2）
In the formula: h is oil tank of transformer height or the cooling device height that comprises fan, l
mGirth for the wide face of measuring wheel this moment (3);
In the formula: N is that the measuring point sum is the number of acoustical signal probe (4).L
IAiThe A weighted sound intensity level of each measuring point;
In the formula: S
0Be reference area, S
0Be 1m
2
8. the measurement structure of transformer station's main equipment sound power level, comprise tested transformer station main equipment (1), it is characterized in that: the circumferential outline of level of described tested transformer station main equipment (1) is the benchmark surface of emission (2), outer 0.3 ~ 2m the place of the benchmark surface of emission (2) arranges measures contoured surface (3), evenly be provided with a plurality of acoustical signal probes (4) on the described measurement contoured surface (3), the spacing that horizontal two adjacent acoustical signals are popped one's head between (4) in above-mentioned a plurality of acoustical signal probes (4) equates with the spacing that two vertically adjacent acoustical signals are popped one's head between (4), and spacing is 0.5 ~ 1.5m, and above-mentioned each acoustical signal probe (4) supports by the measurement support (5) of correspondence.
9. the measurement structure of transformer station according to claim 8 main equipment sound power level, the described benchmark surface of emission (2) is with to measure contoured surface (3) parallel.
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Cited By (5)
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| CN104062000A (en) * | 2014-06-25 | 2014-09-24 | 国家电网公司 | Large power facility sound power level field measurement method and device thereof |
| CN104951635A (en) * | 2014-03-24 | 2015-09-30 | 国家电网公司 | Transformer noise estimating method for determining full load noise |
| CN108519527A (en) * | 2018-03-29 | 2018-09-11 | 武汉理工大学 | A kind of transformer noise and power quality correlation analysis experimental rig and method |
| CN110160631A (en) * | 2018-05-18 | 2019-08-23 | 李文杰 | A weighted acoustic power level mensuration detects sanitary ware to the method for/draining noise |
| CN111307278A (en) * | 2020-03-23 | 2020-06-19 | 中国科学院电工研究所 | Method for measuring and calculating vibration acoustic power of extra-high voltage transformer |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104951635A (en) * | 2014-03-24 | 2015-09-30 | 国家电网公司 | Transformer noise estimating method for determining full load noise |
| CN104951635B (en) * | 2014-03-24 | 2018-05-29 | 国家电网公司 | A kind of transformer noise predictor method for determining noise at full capacity |
| CN104062000A (en) * | 2014-06-25 | 2014-09-24 | 国家电网公司 | Large power facility sound power level field measurement method and device thereof |
| CN108519527A (en) * | 2018-03-29 | 2018-09-11 | 武汉理工大学 | A kind of transformer noise and power quality correlation analysis experimental rig and method |
| CN110160631A (en) * | 2018-05-18 | 2019-08-23 | 李文杰 | A weighted acoustic power level mensuration detects sanitary ware to the method for/draining noise |
| CN110160631B (en) * | 2018-05-18 | 2021-04-27 | 李文杰 | Method for detecting sanitary ware water supply/drainage noise by A weighting sound power level measurement method |
| CN111307278A (en) * | 2020-03-23 | 2020-06-19 | 中国科学院电工研究所 | Method for measuring and calculating vibration acoustic power of extra-high voltage transformer |
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Application publication date: 20130410 |