CN110926593A - Sensor arrangement method for measuring vibration and noise of transformer - Google Patents
Sensor arrangement method for measuring vibration and noise of transformer Download PDFInfo
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- CN110926593A CN110926593A CN201911133013.5A CN201911133013A CN110926593A CN 110926593 A CN110926593 A CN 110926593A CN 201911133013 A CN201911133013 A CN 201911133013A CN 110926593 A CN110926593 A CN 110926593A
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- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
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Abstract
The invention provides a sensor arrangement method for measuring transformer vibration and noise, which can accurately measure the transformer noise by arranging sensors at different positions of different floors and arranging test points for the vibration data of a transformer protective cover, the indoor sound pressure level data of a transformer, the vibration data of the indoor wall of the transformer, the vibration data of the indoor floor of the transformer, the indoor sound pressure level data of an owner, the vibration data of the indoor wall of the owner and the vibration of the indoor floor of the owner to test the data. The invention can compare and analyze different paths of noise transmission in a targeted manner, improves the systematicness and reliability of test data, and has better guiding significance for the design of a damping and noise reducing system.
Description
Technical Field
The invention belongs to the field of electricity, and particularly relates to a sensor arrangement method for measuring vibration and noise of a transformer.
Background
With the development of modern society, more and more transformers enter residential quarters, and property companies often place transformers in basements of residential buildings in order to save space. When the transformer works, the transformer can emit large noise, which causes great trouble to daily life rest of residents on upstairs (particularly residents living in lower floors such as the first floor, the second floor and the like).
The existing technology is mostly only used for measuring a single transformer or a single floor, and the noise of a plurality of transformers or a plurality of floors cannot be measured completely.
In view of the above, there is a need for a sensor arrangement method for measuring transformer vibration and noise, which can effectively measure multiple transformers and multiple floors.
Disclosure of Invention
In order to solve the technical problem, the invention provides a sensor arrangement method for measuring the vibration and noise of a transformer.
The technical scheme of the method is a sensor arrangement method for measuring the vibration and noise of the transformer, and is characterized in that:
respectively arranging test points on vibration data of a transformer protection cover, indoor sound pressure level data of a transformer, indoor wall vibration data of the transformer, indoor floor vibration data of the transformer, indoor sound pressure level data of an owner, indoor wall vibration data of the owner and indoor floor vibration of the owner to test the data;
the data of the vibration of the protective cover of the transformer and the data of the sound pressure level in the transformer room reflect the noise level of a noise source, namely the noise level emitted by the transformer without the measures of shock absorption and noise reduction;
the method comprises the following steps of analyzing the propagation condition of noise through primary solid noise according to vibration data of the indoor wall of the transformer, vibration data of the indoor floor of the transformer and vibration data of the indoor wall of the owner;
the indoor sound pressure level data of the owner reflect the noise level of the target position, and the damping and noise reduction system of the transformer needs to be improved according to the test data so as to reduce the influence of noise on the indoor owner to the maximum extent;
the method comprises the steps of analyzing the propagation condition of noise through secondary solid noise according to vibration data of an indoor floor of an owner, and performing vibration and noise reduction design aiming at key links in a propagation path by referring to the data.
The specific method for arranging the test points is as follows:
the vibration data acquisition point of the indoor floor of the owner is arranged right above the position of the lifting hook of the transformer;
the vibration data acquisition point of the indoor wall of the owner is arranged at a position 1m away from the ground, close to the wall of the bed, of the wall of the susceptible position of the owner;
the arrangement position of the sound pressure level data test points in the house of the owner is the same as the floor vibration collection points;
the transformer indoor wall vibration data acquisition points are arranged at the wall corners and the positions 1m away from the ground of the walls on the two sides of each transformer;
3 transformer indoor floor vibration data acquisition points are arranged around each transformer;
the vibration acquisition data points of the transformer protective cover are arranged on the opposite two surfaces;
the indoor sound pressure level data test points of the transformers are arranged at the corner of a wall, and 3 sound pressure level data test points are arranged around each transformer.
Compared with a common sensor arrangement method, the method provided by the invention has the advantages that different paths of noise propagation can be compared and analyzed in a targeted manner, the systematicness and reliability of test data are improved, and the method has better guiding significance for the design of a damping and noise reducing system.
Drawings
FIG. 1: a transformer noise propagation path schematic diagram;
FIG. 2: distribution room test point noise and vibration test point schematic diagram:
FIG. 3: basement test point noise and vibration test point schematic diagram:
FIG. 4: floor first floor test point noise and vibration test point sketch map:
FIG. 5: floor second floor test point noise and vibration test point sketch map:
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Distribution transformers produce vibration and noise during operation, both of which are present. From the propagation medium, noise is mainly transmitted to the air through surface contact, and vibration is mainly transmitted through the solid medium. In general, the influence of noise on a human body is relatively intuitive, and vibration is often perceived by contact in a relatively close distance. In practice, after the vibration is transmitted to the surface of the solid medium, the vibration further causes air vibration of the surface, and further generates noise. Generally, there are three ways in which a vibrating sound source generates noise, as shown in fig. 1:
the vibration of the vibration source is directly radiated outwards through the air contacted with the surface, and is called direct air noise;
the vibration of the equipment transmits vibration to a surrounding solid structure, and the vibration of the solid structure is led and produces sound, which is called primary solid noise;
when the noise propagated through the air path reaches the solid medium, the solid structure vibrates again, and the structure vibrates again due to the vibration, which is called secondary solid noise.
Among the three noises, the influence of direct air noise is more intuitive, and the influence of the vibration of the sounding body and the primary solid noise caused by the vibration is great. The underground layer where the power distribution room is located is closed, and aerodynamic noise generated due to vibration of gas is isolated. Since the room directly above the power distribution room is separated by only one floor, the secondary solid noise is one of the reasons why the noise can be heard indoors. The most fundamental cause of indoor noise is the building wall vibration caused by the transmission of the vibration of the transformer body to the indoor through the solid structure, and the transmission vibration path comprises:
transformer-base-floor of distribution room-wall of distribution room-owner room;
transformer-busbar-lifting hook-owner living room floor-owner indoor.
When measuring noise and vibration, noise data of a noise source and a target position need to be measured so as to analyze a propagation path; for a point on the noise propagation path, a vibration test is required to determine the influence of the propagation path on the noise propagation.
The following describes an embodiment of the present invention with reference to fig. 1 to 5, which is a sensor arrangement method for transformer vibration and noise measurement, and is characterized in that:
respectively arranging test points on vibration data of a transformer protection cover, indoor sound pressure level data of a transformer, indoor wall vibration data of the transformer, indoor floor vibration data of the transformer, indoor sound pressure level data of an owner, indoor wall vibration data of the owner and indoor floor vibration of the owner to test the data;
the data of the vibration of the protective cover of the transformer and the data of the sound pressure level in the transformer room reflect the noise level of a noise source, namely the noise level emitted by the transformer without the measures of shock absorption and noise reduction;
the method comprises the following steps of analyzing the propagation condition of noise through primary solid noise according to vibration data of the indoor wall of the transformer, vibration data of the indoor floor of the transformer and vibration data of the indoor wall of the owner;
the indoor sound pressure level data of the owner reflect the noise level of the target position, and the damping and noise reduction system of the transformer needs to be improved according to the test data so as to reduce the influence of noise on the indoor owner to the maximum extent;
the method comprises the steps of analyzing the propagation condition of noise through secondary solid noise according to vibration data of an indoor floor of an owner, and performing vibration and noise reduction design aiming at key links in a propagation path by referring to the data.
The specific principle of arranging the test points is as follows:
the vibration data acquisition point of the indoor floor of the owner is arranged right above the position of the lifting hook of the transformer;
the vibration data acquisition point of the indoor wall of the owner is arranged at a position 1m away from the ground, close to the wall of the bed, of the wall of the susceptible position of the owner;
the arrangement position of the sound pressure level data test points in the house of the owner is the same as the floor vibration collection points;
the transformer indoor wall vibration data acquisition points are arranged at the wall corners and the positions 1m away from the ground of the walls on the two sides of each transformer;
3 transformer indoor floor vibration data acquisition points are arranged around each transformer;
the vibration acquisition data points of the transformer protective cover are arranged on the opposite two surfaces;
the indoor sound pressure level data test points of the transformers are arranged at the corner of a wall, and 3 sound pressure level data test points are arranged around each transformer.
The test point selection is shown in fig. 1. F represents a floor vibration data acquisition point; w represents a wall vibration data acquisition point; t represents a transformer protective cover test point; s denotes a sound pressure level test point.
As shown in fig. 2, 1#, 2#, 3# transformers are respectively arranged in the power distribution room, vibration tests are respectively carried out on the front and back surfaces of the protective cover, vibration data at points T1-T6 can be obtained, in order to analyze the propagation path of the transformer vibration, vibration tests are carried out on the floor near the transformer and the wall of the power distribution room, test points are respectively named as points F1-F8, W1-W10, the sound pressure level of the power distribution room is tested, and the test points are named as points S1-S9; as shown in fig. 3, the wall of the basement is subjected to point selection tests, which are respectively W11 and W12, and the sound pressure level test point is S17; as shown in fig. 4, the floor of the first floor living room was tested for vibration, and the following five points were selected with reference to the position of the transformer in the distribution room: F9-F13, and testing the vibration of a point W13 on the bearing wall; testing the sound pressure level of the power distribution room, wherein the test points are named as S10-S14; referring to fig. 4 and 5, in order to analyze the influence of vibration on the sleep of an owner, the method performs vibration test on bedrooms of the first floor and the second floor, wherein two wall test points of the bedroom of the first floor are respectively W14 and W15, a sound pressure level test point is S15, two wall test points W16 and W17 are selected at similar positions of the bedroom of the second floor, and meanwhile, a floor test point F14 and a sound pressure level test point are selected as S16.
When the wall is subjected to vibration measurement, the distance between the selected test point and the ground is 1 m. And selecting a plurality of points on the wall and simultaneously measuring the vibration condition of the wall 1.5m away from the ground for researching the rule on the vibration propagation path.
The test process and the selection of instruments are according to GB3096-2008 sound environment quality standard and GB-T1094.10-2003 power transformer part 10: sound level determination ".
The Shanghai vibroseis ZD-104 waveform frequency spectrum type vibrometer measures vibration acceleration, speed and displacement according to the ISO10816-3 machine vibration standard, and has a frequency spectrum analysis function.
In this test, the vibrometer can measure the displacement, velocity and acceleration of the vibration. Research shows that the speed is mainly used for evaluating the vibration magnitude (vibration intensity) of machine equipment and has a direct relation with the noise magnitude; in the vibration problem and the environmental vibration which affect the human body, the quantity indicating the magnitude of the vibration is commonly the acceleration, not the displacement and the speed, and the vibration acceleration is the main factor which affects the comfort of the human body. Therefore, this test records the speed and acceleration values of the vibration and evaluates them.
The sound pressure level was tested using ulide hand held industrial decibel meter UT 352. The test process adopts A weighting, and calibration is carried out before the test.
It should be understood that parts of the specification not set forth in detail are well within the prior art.
It should be understood that the above description of the preferred embodiments is given for clearness of understanding and no unnecessary limitations are to be understood therefrom, for those skilled in the art may make modifications and alterations without departing from the scope of the invention as defined by the appended claims.
Claims (1)
1. A sensor arrangement method for transformer vibration and noise measurement, characterized by:
respectively arranging test points on vibration data of a transformer protection cover, indoor sound pressure level data of a transformer, indoor wall vibration data of the transformer, indoor floor vibration data of the transformer, indoor sound pressure level data of an owner, indoor wall vibration data of the owner and indoor floor vibration of the owner to test the data;
the data of the vibration of the protective cover of the transformer and the data of the sound pressure level in the transformer room reflect the noise level of a noise source, namely the noise level emitted by the transformer without the measures of shock absorption and noise reduction;
the method comprises the following steps of analyzing the propagation condition of noise through primary solid noise according to vibration data of the indoor wall of the transformer, vibration data of the indoor floor of the transformer and vibration data of the indoor wall of the owner;
the indoor sound pressure level data of the owner reflect the noise level of the target position, and the damping and noise reduction system of the transformer needs to be improved according to the test data so as to reduce the influence of noise on the indoor owner to the maximum extent;
the method comprises the following steps that according to vibration data of an indoor floor of an owner, the propagation condition of noise through secondary solid noise can be analyzed, and the vibration and noise reduction design can be carried out aiming at key links in a propagation path by referring to the data;
the specific method for arranging the test points is as follows:
the vibration data acquisition point of the indoor floor of the owner is arranged right above the position of the lifting hook of the transformer;
the vibration data acquisition point of the indoor wall of the owner is arranged at a position 1m away from the ground, close to the wall of the bed, of the wall of the susceptible position of the owner;
the arrangement position of the sound pressure level data test points in the house of the owner is the same as the floor vibration collection points;
the transformer indoor wall vibration data acquisition points are arranged at the wall corners and the positions, 1m away from the ground, of the walls on the two sides of each transformer;
3 transformer indoor floor vibration data acquisition points are arranged around each transformer;
the vibration acquisition data points of the transformer protective cover are arranged on the opposite two surfaces;
the indoor sound pressure level data test points of the transformers are arranged at the corner of a wall, and 3 sound pressure level data test points are arranged around each transformer.
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| CN201911133013.5A CN110926593A (en) | 2019-11-19 | 2019-11-19 | Sensor arrangement method for measuring vibration and noise of transformer |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150278690A1 (en) * | 2014-04-01 | 2015-10-01 | Quietyme Inc. | Disturbance detection, predictive analysis, and handling system |
| 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 |
| CN107315886A (en) * | 2017-07-06 | 2017-11-03 | 国网重庆市电力公司电力科学研究院 | A kind of method and apparatus of transformer room's exterior three dimensional spatial noise prediction |
| CN110415951A (en) * | 2019-06-27 | 2019-11-05 | 武汉大学 | A kind of improved method of indoor substation low-noise structural and sound absorption structure |
-
2019
- 2019-11-19 CN CN201911133013.5A patent/CN110926593A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150278690A1 (en) * | 2014-04-01 | 2015-10-01 | Quietyme Inc. | Disturbance detection, predictive analysis, and handling system |
| 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 |
| CN107315886A (en) * | 2017-07-06 | 2017-11-03 | 国网重庆市电力公司电力科学研究院 | A kind of method and apparatus of transformer room's exterior three dimensional spatial noise prediction |
| CN110415951A (en) * | 2019-06-27 | 2019-11-05 | 武汉大学 | A kind of improved method of indoor substation low-noise structural and sound absorption structure |
Non-Patent Citations (2)
| Title |
|---|
| 嵇正毓: "橡树林居民小区变压器结构噪声的控制", 《四川环境》 * |
| 曹枚根 等: "地下变电站结构振动与噪声相关性及预估方法", 《中国电机工程学报》 * |
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