CN107831411A - A kind of transmission line of alternation current corona audible noise measuring method and system - Google Patents
A kind of transmission line of alternation current corona audible noise measuring method and system Download PDFInfo
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- CN107831411A CN107831411A CN201710899915.4A CN201710899915A CN107831411A CN 107831411 A CN107831411 A CN 107831411A CN 201710899915 A CN201710899915 A CN 201710899915A CN 107831411 A CN107831411 A CN 107831411A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1209—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing using acoustic measurements
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Abstract
The invention discloses a kind of transmission line of alternation current corona audible noise measuring method, methods described includes：Monitoring point is chosen, rain fall monitor is set in the pre-set radius threshold range of monitoring point, and records rainfall product data according to prefixed time interval threshold value；Noise testing point is chosen, the rain noise value under the conditions of different rainfalls is measured under circuit power down mode using noise transducer, obtains rain noise value corresponding to different rainfall product datas；The functional relation of the rainfall product data and corresponding rain noise value is determined using non-linear fitting method；According to HJ706 2014《Environment noise monitoring technical specification noise measurement amendment》Principle, ambient noise sound pressure level calibration curve is determined using cubic spline interpolation；The transmission line of alternation current corona audible noise measuring value under the conditions of different rainfalls is corrected using the functional relation, ambient noise sound pressure level calibration curve, obtains the transmission line of alternation current corona audible noise exact value under the conditions of different rainfalls.
Description
Technical field
Handed over the present invention relates to project of transmitting and converting electricity line corona audible noise measuring field, and more particularly, to one kind
Flow transmission line of electricity corona audible noise measuring method and system.
Background technology
When AC high-voltage electric transmission line works, circuit is because the voltage of application causes surface to take electric charge, so as to which wire is attached
Closely electric field be present.When conductive line surfaces electric field exceedes gas breakdown intensity, near surface produces shelf depreciation, but does not occur whole
The breakdown of individual the air gap, light luminescent layer is now observed that in conductive line surfaces, and the sound whistled can be heard, this is just
It is corona discharge phenomenon.Corona effect is accompanied by the discharge effect of phenomena such as sound, light, heat of corona discharge process appearance.Hand over
The corona effect of DC transmission engineering is mainly shown as radio interference, audible noise etc..
Audible noise caused by the corona discharge of transmission line of alternation current have wideband noise and line work frequency frequency multiplication and its
Two kinds of the hum (also known as pure tone) of integral multiple.Wideband noise is the explosion sound of a kind of whooshing and whip, by conductive line surfaces
Caused by rambling current impulse caused by corona discharge, particularly in alternating voltage positive half-wave, positive polarity corona
The current impulse streamer stage is the most serious.For general transmission line of alternation current, cause the mainly broadband that people are worried
Noise, next to that hum.Under fair weather, the audible noise and little as caused by the corona of transmission line of alternation current；In the rainy day, lead
The globule below line makes the increase of corona discharge intensity, and audible noise can increase, about big when the audible noise during rainy day is than fine day
15~20dB (A).Therefore, rainy day situation is considered for transmission line of alternation current, the limit value emphasis of audible noise.
In order to which the influence for bringing the corona audible noise of transmission line of electricity drops to zone of reasonableness, for transmission line of alternation current
Audible noise, propose clearly design control limit in super, extra-high voltage grade., pair can before newly-built high-tension line
It is one of necessary design objective to listen noise to be predicted.But the generation of the adjoint audible noise of transmission line of electricity corona discharge
Process is sufficiently complex, and enchancement factor is more, and dispersiveness is big, therefore is difficult theoretically to derive a kind of public affairs of Accurate Prediction audible noise
Formula.The countries such as the U.S., Japan, Italy and Canada, by being simulated in corona cage or long-term measured data on the line
Statistics and analysis, obtain some conclusions.Therefore measured using the circuit of test line segment or actual motion as object, be research
The basic means of transmission line of electricity audible noise.
But at present, for corresponding transmission line of alternation current audible noise, the ambient noise that zone of rainfall comes is mainly by rain spatters
Hit different surfaces to cause, in the field of transmission line of electricity approach, mainly with raindrop impact crops, shrub, grove and soil surface
Cause, it is impossible to accurately ultra-high-tension power transmission line corona audible noise is measured.
The content of the invention
The invention provides a kind of transmission line of alternation current corona audible noise measuring method and system, to solve zone of rainfall
Ambient noise caused by transmission line of alternation current corona audible noise can not accurate measurement the problem of.
In order to solve the above problems, according to an aspect of the invention, there is provided a kind of transmission line of alternation current corona is audible
Noise measuring method, methods described include：
Monitoring point is chosen, rain fall monitor is set in the pre-set radius threshold range of monitoring point, and according to preset time
Interval threshold records rainfall product data；
Noise testing point is chosen, is rained using noise transducer in circuit power down mode to making an uproar under the conditions of different rainfalls
Sound value measures, and obtains rain noise value corresponding to different rainfall product datas；
The functional relation of the rainfall product data and corresponding rain noise value is determined using non-linear fitting method；
According to HJ706-2014《Environment noise monitoring technical specification noise measurement amendment》Principle, inserted using cubic spline
Value method determines ambient noise sound pressure level calibration curve, wherein the abscissa of the ambient noise sound pressure level calibration curve is that noise is poor
Value, ordinate is noise correction values corresponding to noise difference；
Using the functional relation, ambient noise sound pressure level calibration curve to the AC power line under the conditions of different rainfalls
Road corona audible noise measuring value is corrected, and obtains the transmission line of alternation current corona audible noise standard under the conditions of different rainfalls
Really value.
Preferably, wherein the rain fall monitor is：Laser weather phenomenon instrument.
Preferably, wherein it is described selection noise testing point, using noise transducer under circuit power down mode to different drops
Rain noise value under the conditions of rainfall measures, and obtains rain noise value corresponding to different rainfall product datas, including：
Choose positioned at the essentially identical span center of both sides tower height and apart from transmission line of alternation current outboard wire pre-determined distance
At threshold value, and ground is relatively flat, noise testing point is used as at surrounding clear；
Hurricane globe is set on noise transducer, microphone position is set, wherein, the diaphragm of free field microphone is vertically right
The middle phase conductor of quasi- alternating current circuit, the diaphragm of random incident microphone is vertically upward；
The rain noise value under the conditions of different rainfalls is measured under circuit power down mode using noise transducer, obtained
Take rain noise value corresponding to different rainfall product datas.
Preferably, wherein methods described also includes：
Before and after rain noise measurement, sound level meter is verified using acoustic calibration's device；
Microphone is verified according to default checking time interval threshold.
Preferably, wherein determining the rainfall product data and corresponding rain noise value using non-linear fitting method described
Functional relation before, including：
According to the Relation acquisition scatter diagram between the rainfall product data and corresponding rain noise value.
Preferably, wherein described utilize the functional relation, ambient noise sound pressure level calibration curve to different rainfall bars
Transmission line of alternation current corona audible noise measuring value under part is corrected, and obtains the AC power line under the conditions of different rainfalls
Road corona audible noise exact value, including：
Transmission line of alternation current corona audible noise under the conditions of different rainfalls is measured, obtains audible noise measuring
Value；
Audible noise measuring value under the conditions of different rainfalls is made the difference with corresponding rain noise value, obtains noise difference；
Audible noise measuring value under the conditions of different rainfalls corrected value corresponding with the noise difference is made the difference, obtained
Transmission line of alternation current corona audible noise exact value under the conditions of different rainfalls.
Preferably, wherein methods described also includes：
Recorded to presetting the environmental aspect in the range of monitoring threshold.
Preferably, wherein the environmental aspect in the range of described pair of default monitoring threshold records, including：
It is to the default monitoring threshold scope：Radius using monitoring point as the center of circle is the environment in 1km circular scope
Vegetation, landform and building data recorded.
According to another aspect of the present invention, there is provided a kind of transmission line of alternation current corona audible noise measuring system, institute
The system of stating includes：
Rainfall product data monitoring unit, for choosing monitoring point, rainfall is set in the pre-set radius threshold range of monitoring point
Monitoring device, and rainfall product data is recorded according to prefixed time interval threshold value；
Rain noise value acquiring unit, for choosing noise testing point, using noise transducer under circuit power down mode it is right
Rain noise value under the conditions of different rainfalls measures, and obtains rain noise value corresponding to different rainfall product datas；
Functional relation determining unit, for determining that the rainfall product data and corresponding rain are made an uproar using non-linear fitting method
The functional relation of sound value；
Calibration curve determining unit, for according to HJ706-2014《Environment noise monitoring technical specification noise measurement is repaiied
Just》Principle, ambient noise sound pressure level calibration curve is determined using cubic spline interpolation, wherein the ambient noise sound pressure level school
The abscissa of positive curve is noise difference, and ordinate is noise correction values corresponding to noise difference；
Audible noise exact value determining unit, for utilizing the functional relation, ambient noise sound pressure level calibration curve pair
Transmission line of alternation current corona audible noise measuring value under the conditions of different rainfalls is corrected, under the conditions of obtaining different rainfalls
Transmission line of alternation current corona audible noise exact value.
Preferably, wherein the rain fall monitor is：Laser weather phenomenon instrument.
Preferably, wherein the rain noise value acquiring unit, online using noise transducer for choosing noise testing point
The rain noise value under the conditions of different rainfalls is measured under the power down mode of road, obtain different rainfall product datas corresponding to rain make an uproar
Sound value, including：
Choose positioned at the essentially identical span center of both sides tower height and apart from transmission line of alternation current outboard wire pre-determined distance
At threshold value, and ground is relatively flat, noise testing point is used as at surrounding clear；
Hurricane globe is set on noise transducer, microphone position is set, wherein, the diaphragm of free field microphone is vertically right
The middle phase conductor of quasi- alternating current circuit, the diaphragm of random incident microphone is vertically upward；
The rain noise value under the conditions of different rainfalls is measured under circuit power down mode using noise transducer, obtained
Take rain noise value corresponding to different rainfall product datas.
Preferably, wherein the system also includes：
Sound level meter verification unit, before and after being measured in rain noise, sound level meter is verified using acoustic calibration's device；
Microphone verification unit, for being verified according to default checking time interval threshold to microphone.
Preferably, wherein the functional relation determining unit, is additionally operable to：
According to the Relation acquisition scatter diagram between the rainfall product data and corresponding rain noise value.
Preferably, wherein the audible noise exact value determining unit, is specifically used for：
Transmission line of alternation current corona audible noise under the conditions of different rainfalls is measured, obtains audible noise measuring
Value；
Audible noise measuring value under the conditions of different rainfalls is made the difference with corresponding rain noise value, obtains noise difference；
Audible noise measuring value under the conditions of different rainfalls corrected value corresponding with the noise difference is made the difference, obtained
Transmission line of alternation current corona audible noise exact value under the conditions of different rainfalls.
Preferably, wherein the system also includes：
Environmental aspect recording unit, for being recorded to presetting the environmental aspect in the range of monitoring threshold.
Preferably, wherein the environmental aspect recording unit, remembers to presetting the environmental aspect in the range of monitoring threshold
Record, including：
It is to the default monitoring threshold scope：Radius using monitoring point as the center of circle is the environment in 1km circular scope
Vegetation, landform and building data recorded.
The invention provides a kind of transmission line of alternation current corona audible noise measuring method and system, the rainfall to monitoring point
Amount and the rain noise data of noise testing point measure, and using non-linear fitting method determine the rainfall product data and
The functional relation of corresponding rain noise value；According to HJ706-2014《Environment noise monitoring technical specification noise measurement amendment》It is former
Then, ambient noise sound pressure level calibration curve is determined using cubic spline interpolation；Utilize the functional relation, ambient noise acoustic pressure
Level calibration curve is corrected to the transmission line of alternation current corona audible noise measuring value under the conditions of different rainfalls, is obtained different
Transmission line of alternation current corona audible noise exact value under the conditions of rainfall.The method of the present invention can carry out AC power line
The audible noise that pure corona discharge is brought is obtained during the corona audible noise measurement research of road, is that transmission line of alternation current corona can
Listen noise measurement research to provide accurate data, ensure that the accuracy of transmission line of alternation current corona audible noise research.
Brief description of the drawings
By reference to the following drawings, the illustrative embodiments of the present invention can be more fully understood by：
Fig. 1 is the flow chart according to the transmission line of alternation current corona audible noise measuring method 100 of embodiment of the present invention；
Fig. 2 is the instance graph according to the monitoring point environment of embodiment of the present invention；
Fig. 3 is the instance graph according to the rain fall monitor of embodiment of the present invention；
Fig. 4 is the instance graph that interface is collected according to the rainfall record of embodiment of the present invention；
Fig. 5 is the correction graph according to embodiment of the present invention；
Fig. 6 is the relation schematic diagram according to annual the audible noise measured value and rainfall of embodiment of the present invention；
Fig. 7 is according to the annual audible noise exact value of embodiment of the present invention and the graph of a relation of rainfall；And
Fig. 8 is to be shown according to the structure of the transmission line of alternation current corona audible noise measuring system 800 of embodiment of the present invention
It is intended to.
Embodiment
The illustrative embodiments of the present invention are introduced with reference now to accompanying drawing, however, the present invention can use many different shapes
Formula is implemented, and is not limited to embodiment described herein, there is provided these embodiments are to disclose at large and fully
The present invention, and fully pass on the scope of the present invention to person of ordinary skill in the field.Show for what is be illustrated in the accompanying drawings
Term in example property embodiment is not limitation of the invention.In the accompanying drawings, identical cells/elements are attached using identical
Icon is remembered.
Unless otherwise indicated, term (including scientific and technical terminology) used herein has to person of ordinary skill in the field
It is common to understand implication.Further it will be understood that the term limited with usually used dictionary, be appreciated that and its
The linguistic context of association area has consistent implication, and is not construed as Utopian or overly formal meaning.
Fig. 1 is the flow chart according to the transmission line of alternation current corona audible noise measuring method 100 of embodiment of the present invention.
As shown in figure 1, the transmission line of alternation current corona audible noise measuring method of embodiment of the present invention to the rainfall of monitoring point with
And the rain noise data of noise testing point measure, and the rainfall product data and correspondingly is determined using non-linear fitting method
Rain noise value functional relation；According to HJ706-2014《Environment noise monitoring technical specification noise measurement amendment》Principle,
Ambient noise sound pressure level calibration curve is determined using cubic spline interpolation；Utilize the functional relation, ambient noise sound pressure level
Calibration curve is corrected to the transmission line of alternation current corona audible noise measuring value under the conditions of different rainfalls, obtains different drops
Transmission line of alternation current corona audible noise exact value under the conditions of rainfall.The method of the present invention can carry out transmission line of alternation current
The audible noise that pure corona discharge is brought is obtained during corona audible noise measurement research, is that transmission line of alternation current corona is audible
Noise measurement research provides accurate data, ensure that the accuracy of transmission line of alternation current corona audible noise research.The present invention
The transmission line of alternation current corona audible noise measuring method 100 of embodiment is chosen in step 101 and supervised since step 101 place
Measuring point, rain fall monitor is set in the pre-set radius threshold range of monitoring point, and is recorded and dropped according to prefixed time interval threshold value
Rainfall data.
Preferably, wherein the rain fall monitor is：Laser weather phenomenon instrument.
In embodiments of the present invention, monitoring point surrounding enviroment are recorded first, including：Record monitoring point is center of circle 1km
For in the circle of radius situations such as the vegetation of environment, landform, building, table 1 below be several HVAC power transmission lines in the wild
The example of main environment description in path.The environment described by table 1 is not limited to, is remembered with specific reference to different research monitoring points
Record.
Main environment description in the HVAC power transmission line of table 1 outer pathway out of office
A rainfall measuring device is being established around monitoring point in 5m~15m, this is device and monitoring point local environment one
Cause, surrounding is unobstructed.In order to accurately consider, rainfall measuring device should use accurate laser weather phenomenon instrument.Weather shows
As instrument, to be placed in ground 3m high.Weather phenomenon instrument is that laser attenuation principle is accurately measured precipitation and (liquid, consolidated based on precipitation particles
State, mixing) meteorologic parameter such as particle diameter, speed, distribution density, raininess, cumulative precipitation, weather phenomenon, visibility collection rain
The function such as drop-size distribution analyzer, high accuracy round-the-clock rainfall gauge, weather phenomenon identifier and visibility meter is in the high-performance gas of one
Image sensor.The change of rainfall can be recorded with less time interval with reference to logging software.
Preferably, step 102 choose noise testing point, using noise transducer under circuit power down mode to different drops
Rain noise value under the conditions of rainfall measures, and obtains rain noise value corresponding to different rainfall product datas.
Preferably, wherein it is described selection noise testing point, using noise transducer under circuit power down mode to different drops
Rain noise value under the conditions of rainfall measures, and obtains rain noise value corresponding to different rainfall product datas, including：
Choose positioned at the essentially identical span center of both sides tower height and apart from transmission line of alternation current outboard wire pre-determined distance
At threshold value, and ground is relatively flat, noise testing point is used as at surrounding clear；
Hurricane globe is set on noise transducer, microphone position is set, wherein, the diaphragm of free field microphone is vertically right
The middle phase conductor of quasi- alternating current circuit, the diaphragm of random incident microphone is vertically upward；
The rain noise value under the conditions of different rainfalls is measured under circuit power down mode using noise transducer, obtained
Take rain noise value corresponding to different rainfall product datas.
Preferably, wherein methods described also includes：
Before and after rain noise measurement, sound level meter is verified using acoustic calibration's device；
Microphone is verified according to default checking time interval threshold.
In embodiments of the present invention, in order to gather the rain noise under condition of raining, noise transducer, which adds, puts hurricane globe；
The diaphragm of free field microphone answers the middle phase conductor of perpendicular alignmnet alternating current circuit, the vertical court of diaphragm of random incident microphone
On.For measurement point position in the essentially identical span center of both sides tower height and away from alternating current circuit outboard wire 20m, measuring point should be ground ratio
Flatter, surrounding clear and launched circuit sound wave enter certain reflecting surface on a free field；Noise probe away from
1.5m is high from the ground.Under circuit blackout condition, choose and rain noise is continuously monitored under the conditions of different rainfall；Before measurement
Afterwards, sound level meter is verified with acoustic calibration's device；Frequency response and internal noise water of each month to measuring system
Flat once to be examined and determine, every three months is once verified to microphone.
Preferably, the rainfall product data and corresponding rain noise value are determined using non-linear fitting method in step 103
Functional relation.
Preferably, wherein determining the rainfall product data and corresponding rain noise value using non-linear fitting method described
Functional relation before, including：
According to the Relation acquisition scatter diagram between the rainfall product data and corresponding rain noise value.
Preferably, in step 104 according to HJ706-2014《Environment noise monitoring technical specification noise measurement amendment》It is former
Then, ambient noise sound pressure level calibration curve is determined using cubic spline interpolation, wherein ambient noise sound pressure level correction is bent
The abscissa of line is noise difference, and ordinate is noise correction values corresponding to noise difference.
China state environment protecting standard HJ 706-2014《Environment noise monitoring technical specification noise measurement amendment》Rule
To the modification method of noise measurement when having determined to be applied to monitoring and evaluation ambient noise, it is specially：For noise measurement with
When the difference DELTA L1 of noise floor value is more than 10dB, noise measurement is not corrected；The difference of noise measurement and noise floor value
When being worth Δ L1 between 3dB~10dB, it is modified (noise emission value=noise measurement+correction value) by table 2.
The 3dB of table 2<ΔL1<Noise measurement correction chart during 10dB
| Difference DELTA L1 | Correction value |
| 3 | -3 |
| 4~5 | -2 |
| 6~10 | -1 |
Preferably, the functional relation, ambient noise sound pressure level calibration curve are utilized to different rainfall bars in step 105
Transmission line of alternation current corona audible noise measuring value under part is corrected, and obtains the AC power line under the conditions of different rainfalls
Road corona audible noise exact value.
Preferably, wherein described utilize the functional relation, ambient noise sound pressure level calibration curve to different rainfall bars
Transmission line of alternation current corona audible noise measuring value under part is corrected, and obtains the AC power line under the conditions of different rainfalls
Road corona audible noise exact value, including：
Transmission line of alternation current corona audible noise under the conditions of different rainfalls is measured, obtains audible noise measuring
Value；
Audible noise measuring value under the conditions of different rainfalls is made the difference with corresponding rain noise value, obtains noise difference；
Audible noise measuring value under the conditions of different rainfalls corrected value corresponding with the noise difference is made the difference, obtained
Transmission line of alternation current corona audible noise exact value under the conditions of different rainfalls.
Embodiments of the present invention are illustrated in detail below
It is with ambient noise (rain noise) under monitoring point condition of raining near certain extra-high-voltage alternating current same tower double back transmission line
Example：
Fig. 2 is the instance graph according to the monitoring point environment of embodiment of the present invention.As shown in Fig. 2 record monitoring point periphery
Environment, mulching material is spire or crops, such as hay, cereal around this measuring point, has a small amount of small, leaf at 15~30m
Dense trees；There are a small amount of trees, scene such as Fig. 1, in table 1 between R2 and R3 at 30~90m.
Fig. 3 is the instance graph according to the rain fall monitor of embodiment of the present invention.As shown in figure 3, using certain external money
As rainfall monitoring equipment, equipment is located at the outer 10m of measuring point the weather phenomenon instrument powerful, stability is good, is placed in ground 3m
Eminence.Fig. 4 is the instance graph that interface is collected according to the rainfall record of embodiment of the present invention.Including：Time and corresponding rain
Measure data.
When being measured to rain noise, using certain external noise measuring set, noise transducer, which adds, puts hurricane globe；Microphone
Diaphragm answer the middle phase conductor of perpendicular alignmnet alternating current circuit, measurement point position is in the essentially identical span center of both sides tower height and away from friendship
Flow Line outboard wire 20m, noise probe distance ground 1.5m are high.Choose and rain noise is connected under the conditions of different rainfall respectively
Continuous monitoring；What is measured is front and rear, and sound level meter is verified with acoustic calibration's device；Each month rings to the frequency of measuring system
Answer and internal noise level is once examined and determine, every three months is once verified to microphone.
After obtaining rainfall data and corresponding rain noise data, the relation between rainfall and rain noise is used into scatter diagram
Mode is plotted in the same coordinate system, and the relation between rainfall and rain noise is fitted using non-linear fitting method,
Obtain the function expression between rainfall and rain noise.To the ambient noise (rain under 2 months 2015 to the multiple condition of raining of September
Noise) between relation be fitted to obtain functional relation such as following formula：
ANrain=43+10 × lg (R),
Wherein, ANrainFor the rain noise value under different rainfalls, unit is dB (A)；R is rainfall value, unit mm/
h。
According to HJ 706-2014《Environment noise monitoring technical specification noise measurement amendment》Background correction principle, adopt
With cubic spline interpolation method, ambient noise sound pressure level calibration curve is formulated, by carrying out cubic spline interpolation to the data of table 2,
Determine ambient noise sound pressure level calibration curve.Fig. 5 is the correction graph according to embodiment of the present invention.As shown in figure 5, horizontal seat
Noise difference is designated as, that is, synthesizes the difference of sound pressure level and background sound pressure level, unit is：dB；Ordinate is corresponding to noise difference
Noise correction values, i.e., the value subtracted from synthesis acoustic pressure, unit are：dB.
Finally, using the functional relation, ambient noise sound pressure level calibration curve to the exchange under the conditions of different rainfalls
Transmission line of electricity corona audible noise measuring value is corrected, and the transmission line of alternation current corona obtained under the conditions of different rainfalls is audible
Noise exact value.First, the transmission line of alternation current corona audible noise under the conditions of different rainfalls is measured, obtained audible
Noise measurement；Then, the audible noise measuring value under the conditions of different rainfalls is made the difference with corresponding rain noise value, acquisition is made an uproar
Sound difference；Finally, the corrected value corresponding with the noise difference of the audible noise measuring value under the conditions of different rainfalls is made the difference,
Obtain the transmission line of alternation current corona audible noise exact value under the conditions of different rainfalls.Fig. 6 is according to embodiment of the present invention
Annual audible noise measured value and rainfall relation schematic diagram.As shown in fig. 6, abscissa is rainfall, ordinate is can
Listen noise measured value, " " represent for summer and autumn；Another represents winter and spring.Fig. 7 is according to embodiment party of the present invention
The annual audible noise exact value of formula and the graph of a relation of rainfall.As shown in fig. 7, abscissa is rainfall, ordinate is audible
Noise exact value, intermediate curve represent matched curve.
Fig. 8 is to be shown according to the structure of the transmission line of alternation current corona audible noise measuring system 800 of embodiment of the present invention
It is intended to.As shown in figure 8, the transmission line of alternation current corona audible noise measuring system 800 of embodiment of the present invention includes：Rainfall
Data monitoring unit 801, rain noise value acquiring unit 802, functional relation determining unit 803, the and of calibration curve determining unit 804
Audible noise exact value determining unit 805.
Preferably, in rainfall product data monitoring unit 801, monitoring point is chosen, in the pre-set radius threshold range of monitoring point
Rain fall monitor is set, and rainfall product data is recorded according to prefixed time interval threshold value.Preferably, wherein the rainfall
Monitoring device is：Laser weather phenomenon instrument.
Preferably, in rain noise value acquiring unit 802, noise testing point is chosen, using noise transducer in line outage
The rain noise value under the conditions of different rainfalls is measured under state, obtains rain noise value corresponding to different rainfall product datas.
Preferably, wherein the rain noise value acquiring unit, online using noise transducer for choosing noise testing point
The rain noise value under the conditions of different rainfalls is measured under the power down mode of road, obtain different rainfall product datas corresponding to rain make an uproar
Sound value, including：
Choose positioned at the essentially identical span center of both sides tower height and apart from transmission line of alternation current outboard wire pre-determined distance
At threshold value, and ground is relatively flat, noise testing point is used as at surrounding clear；
Hurricane globe is set on noise transducer, microphone position is set, wherein, the diaphragm of free field microphone is vertically right
The middle phase conductor of quasi- alternating current circuit, the diaphragm of random incident microphone is vertically upward；
The rain noise value under the conditions of different rainfalls is measured under circuit power down mode using noise transducer, obtained
Take rain noise value corresponding to different rainfall product datas.
Preferably, wherein the system also includes：
Sound level meter verification unit, before and after being measured in rain noise, sound level meter is verified using acoustic calibration's device；
Microphone verification unit, for being verified according to default checking time interval threshold to microphone.
Preferably, in functional relation determining unit 803, the rainfall product data and right is determined using non-linear fitting method
The functional relation for the rain noise value answered.Preferably, wherein the functional relation determining unit, is additionally operable to：
According to the Relation acquisition scatter diagram between the rainfall product data and corresponding rain noise value.
Preferably, in calibration curve determining unit 804, according to HJ706-2014《Environment noise monitoring technical specification noise
Measured value amendment》Principle, ambient noise sound pressure level calibration curve is determined using cubic spline interpolation, wherein the ambient noise
The abscissa of sound pressure level calibration curve is noise difference, and ordinate is noise correction values corresponding to noise difference.
Preferably, in audible noise exact value determining unit 805, the functional relation, ambient noise sound pressure level school are utilized
Positive curve is corrected to the transmission line of alternation current corona audible noise measuring value under the conditions of different rainfalls, obtains different rainfalls
Transmission line of alternation current corona audible noise exact value under the conditions of amount.
Preferably, wherein the audible noise exact value determining unit, is specifically used for：
Transmission line of alternation current corona audible noise under the conditions of different rainfalls is measured, obtains audible noise measuring
Value；
Audible noise measuring value under the conditions of different rainfalls is made the difference with corresponding rain noise value, obtains noise difference；
Audible noise measuring value under the conditions of different rainfalls corrected value corresponding with the noise difference is made the difference, obtained
Transmission line of alternation current corona audible noise exact value under the conditions of different rainfalls.
Preferably, wherein the system also includes：
Environmental aspect recording unit, for being recorded to presetting the environmental aspect in the range of monitoring threshold.
Preferably, wherein the environmental aspect recording unit, remembers to presetting the environmental aspect in the range of monitoring threshold
Record, including：
It is to the default monitoring threshold scope：Radius using monitoring point as the center of circle is the environment in 1km circular scope
Vegetation, landform and building data recorded.
Another reality of the transmission line of alternation current corona audible noise measuring system 800 of embodiments of the invention and the present invention
It is corresponding to apply the transmission line of alternation current corona audible noise measuring method 100 of example, will not be repeated here.
The present invention is described by reference to a small amount of embodiment.However, it is known in those skilled in the art, as
What subsidiary Patent right requirement was limited, except the present invention other embodiments disclosed above equally fall the present invention's
In the range of.
Normally, all terms used in the claims are all solved according to them in the usual implication of technical field
Release, unless clearly being defined in addition wherein.All references " one/described/be somebody's turn to do [device, component etc.] " are all opened ground
At least one example being construed in described device, component etc., unless otherwise expressly specified.Any method disclosed herein
Step need not all be run with disclosed accurately order, unless explicitly stated otherwise.
Claims (16)
- A kind of 1. transmission line of alternation current corona audible noise measuring method, it is characterised in that methods described includes：Monitoring point is chosen, rain fall monitor is set in the pre-set radius threshold range of monitoring point, and according to prefixed time interval Threshold value records rainfall product data；Choose noise testing point, using noise transducer under circuit power down mode to the rain noise value under the conditions of different rainfalls Measure, obtain rain noise value corresponding to different rainfall product datas；The functional relation of the rainfall product data and corresponding rain noise value is determined using non-linear fitting method；According to HJ706-2014《Environment noise monitoring technical specification noise measurement amendment》Principle, utilize cubic spline interpolation Ambient noise sound pressure level calibration curve is determined, wherein the abscissa of the ambient noise sound pressure level calibration curve is noise difference, Ordinate is noise correction values corresponding to noise difference；Using the functional relation, ambient noise sound pressure level calibration curve to the transmission line of alternation current electricity under the conditions of different rainfalls Dizzy audible noise measuring value is corrected, and the transmission line of alternation current corona audible noise obtained under the conditions of different rainfalls is accurate Value.
- 2. according to the method for claim 1, it is characterised in that the rain fall monitor is：Laser weather phenomenon Instrument.
- 3. according to the method for claim 1, it is characterised in that the selection noise testing point, existed using noise transducer The rain noise value under the conditions of different rainfalls is measured under line outage state, obtains rain corresponding to different rainfall product datas Noise figure, including：Choose positioned at the essentially identical span center of both sides tower height and apart from transmission line of alternation current outboard wire pre-determined distance threshold value Place, and ground is relatively flat, noise testing point is used as at surrounding clear；Hurricane globe is set on noise transducer, microphone position is set, wherein, the diaphragm perpendicular alignmnet of free field microphone is handed over The middle phase conductor of Flow Line, the diaphragm of random incident microphone is vertically upward；The rain noise value under the conditions of different rainfalls is measured under circuit power down mode using noise transducer, obtained not With rain noise value corresponding to rainfall product data.
- 4. according to the method for claim 3, it is characterised in that methods described also includes：Before and after rain noise measurement, sound level meter is verified using acoustic calibration's device；Microphone is verified according to default checking time interval threshold.
- 5. according to the method for claim 1, it is characterised in that determine the rainfall using non-linear fitting method described Before the functional relation for measuring data and corresponding rain noise value, including：According to the Relation acquisition scatter diagram between the rainfall product data and corresponding rain noise value.
- 6. according to the method for claim 1, it is characterised in that described to utilize the functional relation, ambient noise sound pressure level Calibration curve is corrected to the transmission line of alternation current corona audible noise measuring value under the conditions of different rainfalls, obtains different drops Transmission line of alternation current corona audible noise exact value under the conditions of rainfall, including：Transmission line of alternation current corona audible noise under the conditions of different rainfalls is measured, obtains audible noise measuring value；Audible noise measuring value under the conditions of different rainfalls is made the difference with corresponding rain noise value, obtains noise difference；Audible noise measuring value under the conditions of different rainfalls corrected value corresponding with the noise difference is made the difference, obtained different Transmission line of alternation current corona audible noise exact value under the conditions of rainfall.
- 7. according to the method for claim 1, it is characterised in that methods described also includes：Recorded to presetting the environmental aspect in the range of monitoring threshold.
- 8. according to the method for claim 7, it is characterised in that the environmental aspect in the range of described pair of default monitoring threshold is entered Row record, including：It is to the default monitoring threshold scope：Using monitoring point as the center of circle radius for the environment in 1km circular scope plant Quilt, landform and building data are recorded.
- 9. a kind of transmission line of alternation current corona audible noise measuring system, it is characterised in that the system includes：Rainfall product data monitoring unit, for choosing monitoring point, rainfall monitoring is set in the pre-set radius threshold range of monitoring point Device, and rainfall product data is recorded according to prefixed time interval threshold value；Rain noise value acquiring unit, for choosing noise testing point, using noise transducer under circuit power down mode to difference Rain noise value under the conditions of rainfall measures, and obtains rain noise value corresponding to different rainfall product datas；Functional relation determining unit, for determining the rainfall product data and corresponding rain noise value using non-linear fitting method Functional relation；Calibration curve determining unit, for according to HJ706-2014《Environment noise monitoring technical specification noise measurement amendment》It is former Then, ambient noise sound pressure level calibration curve is determined using cubic spline interpolation, wherein ambient noise sound pressure level correction is bent The abscissa of line is noise difference, and ordinate is noise correction values corresponding to noise difference；Audible noise exact value determining unit, for utilizing the functional relation, ambient noise sound pressure level calibration curve to difference Transmission line of alternation current corona audible noise measuring value under the conditions of rainfall is corrected, and obtains the friendship under the conditions of different rainfalls Flow transmission line of electricity corona audible noise exact value.
- 10. system according to claim 9, it is characterised in that the rain fall monitor is：Laser weather phenomenon Instrument.
- 11. system according to claim 9, it is characterised in that the rain noise value acquiring unit, surveyed for choosing noise Point is measured, the rain noise value under the conditions of different rainfalls is measured under circuit power down mode using noise transducer, is obtained Rain noise value corresponding to different rainfall product datas, including：Choose positioned at the essentially identical span center of both sides tower height and apart from transmission line of alternation current outboard wire pre-determined distance threshold value Place, and ground is relatively flat, noise testing point is used as at surrounding clear；Hurricane globe is set on noise transducer, microphone position is set, wherein, the diaphragm perpendicular alignmnet of free field microphone is handed over The middle phase conductor of Flow Line, the diaphragm of random incident microphone is vertically upward；The rain noise value under the conditions of different rainfalls is measured under circuit power down mode using noise transducer, obtained not With rain noise value corresponding to rainfall product data.
- 12. system according to claim 9, it is characterised in that the system also includes：Sound level meter verification unit, before and after being measured in rain noise, sound level meter is verified using acoustic calibration's device；Microphone verification unit, for being verified according to default checking time interval threshold to microphone.
- 13. system according to claim 9, it is characterised in that the functional relation determining unit, be additionally operable to：According to the Relation acquisition scatter diagram between the rainfall product data and corresponding rain noise value.
- 14. system according to claim 9, it is characterised in that the audible noise exact value determining unit is specific to use In：Transmission line of alternation current corona audible noise under the conditions of different rainfalls is measured, obtains audible noise measuring value；Audible noise measuring value under the conditions of different rainfalls is made the difference with corresponding rain noise value, obtains noise difference；Audible noise measuring value under the conditions of different rainfalls corrected value corresponding with the noise difference is made the difference, obtained different Transmission line of alternation current corona audible noise exact value under the conditions of rainfall.
- 15. system according to claim 9, it is characterised in that the system also includes：Environmental aspect recording unit, for being recorded to presetting the environmental aspect in the range of monitoring threshold.
- 16. system according to claim 15, it is characterised in that the environmental aspect recording unit, to default monitoring threshold Environmental aspect in the range of value is recorded, including：It is to the default monitoring threshold scope：Using monitoring point as the center of circle radius for the environment in 1km circular scope plant Quilt, landform and building data are recorded.
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