CN102749545A - 500 kV electrified water-washing safety detection method and device - Google Patents
500 kV electrified water-washing safety detection method and device Download PDFInfo
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- CN102749545A CN102749545A CN2012102563986A CN201210256398A CN102749545A CN 102749545 A CN102749545 A CN 102749545A CN 2012102563986 A CN2012102563986 A CN 2012102563986A CN 201210256398 A CN201210256398 A CN 201210256398A CN 102749545 A CN102749545 A CN 102749545A
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Abstract
The invention relates to 500 kV electrified water-washing safety detection method and device. The method comprises the following steps of: monitoring an ultraviolet image of a working waveband within the set waveband range during the electrified water washing process in real time; acquiring the value of ultraviolet photons in the ultraviolet image; and judging whether the value of ultraviolet photons is greater than or equal to the preset ultraviolet photon early-warning value, and if so, sending warning information. According to the scheme of the invention, detection is carried out by monitoring the ultraviolet image, direct contact with washed operating equipment is not needed, and the real status information of the operating equipment in the washing status can be monitored under the condition of not cutting off power and not changing the system operating status. Therefore, the safety of electrified water washing work can be effectively evaluated, and flashing accidents of electrified equipment during the electrified water washing process can be prevented.
Description
Technical field
The present invention relates to the electric power network technique field, particularly a kind of 500kV Living water washing safety detection method and device.
Background technology
The large tracts of land pollution flashover of power transmission and transformation equipment outer insulation is one of main threat of China's safe operation of power system; Pollution flashover is meant that the dunghill of insulation of electrical installation surface attachment is under wet condition; Its soluble substance is water-soluble gradually; Form one deck conducting film at insulating surface, the dielectric level of insulator is reduced greatly, the strong electric discharge phenomena that under the field of electric force effect, occur.In order to ensure the security of Operation of Electric Systems, the measure that need do some anti-pollution flashovers is to prevent the generation of pollution flashover accident, and the present more anti-pollution flashover measure of adopting is Living water washing transformer station and transmission line of electricity electroceramics or glass external insulation.Living water washing is meant under the situation of the normal operation of high-tension apparatus; Utilize the water of certain resistivity; Keep certain hydraulic pressure and safe distance etc. condition, use special pump water mechanical hook-up, partly wash the operational method of removing contamination filthy insulation of electrical installation is arranged.Living water washing is under the situation of electric equipment operation, to carry out operation, have handle burst capability strong, do not require power failure operation,, many-sided advantage such as cost low little to the production run influence.Living water washing can effectively improve power supply reliability, prevent the generation of pollution flashover accident and loss that the cleaning of avoiding having a power failure is caused.
Because be to carry out operation in the situation of electric equipment operation system, therefore, the security of Living water washing operation directly has influence on the security of electric system, thereby has influence on the Living water washing operation technique in application on power system and popularization.Yet, still do not have effective means to come the security of Living water washing operation is assessed at present.
Summary of the invention
To the problem that exists in the above-mentioned prior art; The object of the present invention is to provide a kind of 500kV Living water washing safety detection method and a kind of 500kV Living water washing safety detection device, it can be assessed the security of Living water washing operation effectively.
For achieving the above object, the present invention adopts following technical scheme:
A kind of 500kV Living water washing safety detection method comprises step:
Monitor the ultraviolet image of service band in setting wavelength band in the Living water washing process in real time;
Obtain the ultraviolet photon numerical value in the said ultraviolet image;
Judge whether said ultraviolet photon numeral is greater than or equal to preset ultraviolet photon early warning value, if send warning message.
A kind of 500kV Living water washing safety detection device comprises:
Ultraviolet photon numerical value acquiring unit is used for obtaining the ultraviolet photon numerical value of ultraviolet image, and this ultraviolet image is in the Living water washing process of monitoring in real time, the ultraviolet image of service band in setting wavelength band;
Judging unit is used to judge whether said ultraviolet photon numeral is greater than or equal to preset ultraviolet photon early warning value;
Alarm unit is used in the judged result of said judging unit sending warning message when being.
According to the present invention program; It is through the ultraviolet image of service band in setting range in the real-time monitoring Living water washing process; Obtain the ultraviolet photon numerical value in the ultraviolet image; And, sends ultraviolet photon numerical value warning message when being greater than or equal to preset ultraviolet photon early warning value; It is to detect through the monitoring ultraviolet image, need not directly to contact with the operational outfit that is rinsed, and can accomplish not have a power failure, do not change under the situation of system running state to monitor the time of day information of operational outfit under the flushing state; Thereby can assess the security of Living water washing operation effectively, can prevent the sudden strain of a muscle accident of dashing of charging equipment in the Living water washing process.
Description of drawings
Fig. 1 is the schematic flow sheet of 500kV Living water washing safety detection method embodiment of the present invention;
Fig. 2 is the structural representation of 500kV Living water washing safety detection device embodiment of the present invention;
Fig. 3 is carrying out the arrangement synoptic diagram of discharge examination testing ground in the concrete example;
Fig. 4 is the synoptic diagram of 500kV Living water washing mode in the concrete example.
Embodiment
Preferred embodiments below in conjunction with is wherein set forth the present invention program in detail.
The schematic flow sheet of 500kV Living water washing safety detection method embodiment of the present invention has been shown among Fig. 1.As shown in Figure 1, the method in the present embodiment comprises step:
Step S101: monitor the ultraviolet image of service band in setting wavelength band in the Living water washing process in real time;
Step S102: obtain the ultraviolet photon numerical value in the above-mentioned ultraviolet image;
Step S103: judge whether above-mentioned ultraviolet photon numeral is greater than or equal to preset ultraviolet photon early warning value, if send warning message.
According to the scheme in the present embodiment; It is through the ultraviolet image of service band in setting range in the real-time monitoring Living water washing process; Obtain the ultraviolet photon numerical value in the ultraviolet image; And, sends ultraviolet photon numerical value warning message when being greater than or equal to preset ultraviolet photon early warning value; It is to detect through the monitoring ultraviolet image, need not directly to contact with the operational outfit that is rinsed, and can accomplish not have a power failure, do not change under the situation of system running state to monitor the time of day information of operational outfit under the flushing state; Thereby can assess the security of Living water washing operation effectively, can prevent the sudden strain of a muscle accident of dashing of charging equipment in the Living water washing process.
Wherein, above-mentioned setting wavelength band can be set at 240～280 nanometers.And when ultraviolet image is monitored, can be to be detected by the position at the charging equipment horizontal range predeterminable range place of Living water washing process flushing from distance, the predeterminable range here can be 8～16 meters.
In addition, when above-mentioned real-time detection ultraviolet image, can be through after the Living water washing process be taken the ultraviolet video data, again the ultraviolet video data that obtains is carried out the branch frame and handle and obtain above-mentioned ultraviolet image.Therein in example, the picture that can divide frame to be treated to 30 frames through video, concrete picture format can be done different settings, for example JPG form, jpeg format or the like according to actual needs.
According to the Living water washing safety detection method of the invention described above, the present invention also provides a kind of 500kV Living water washing safety detection device, and the synoptic diagram of apparatus of the present invention embodiment has been shown among Fig. 2.
As shown in Figure 2, the Living water washing safety detection device in the present embodiment comprises:
Ultraviolet photon numerical value acquiring unit 201 is used for obtaining the ultraviolet photon numerical value of ultraviolet image, and wherein, this ultraviolet image is in the Living water washing process of monitoring in real time, the ultraviolet image of service band in setting wavelength band;
According to the scheme in the present embodiment; It is through the ultraviolet image of service band in setting range in the real-time monitoring Living water washing process; Obtain the ultraviolet photon numerical value in the ultraviolet image; And, sends ultraviolet photon numerical value warning message when being greater than or equal to preset ultraviolet photon early warning value; It is to detect through the monitoring ultraviolet image, need not directly to contact with the operational outfit that is rinsed, and can accomplish not have a power failure, do not change under the situation of system running state to monitor the time of day information of operational outfit under the flushing state; Thereby can assess the security of Living water washing operation effectively, can prevent the sudden strain of a muscle accident of dashing of charging equipment in the Living water washing process.
Wherein, above-mentioned setting wavelength band can be set at 240～280 nanometers.And ultraviolet image checkout equipment 201 can be to be detected by the position at the charging equipment horizontal range predeterminable range place of Living water washing process flushing from distance when ultraviolet image is monitored, and the predeterminable range here can be 8～16 meters.
In another embodiment of the present invention, can also comprise above-mentioned ultraviolet image checkout equipment 200, be used for monitoring in real time the ultraviolet image of Living water washing process service band in setting wavelength band.
Wherein, this ultraviolet image checkout equipment 200 can be realized through present existing ultraviolet imagery appearance.Certainly, also can adopt other the equipment that can monitor ultraviolet image to realize, as long as can monitor ultraviolet image.When in real time detecting ultraviolet image, can be through after the Living water washing process be taken the ultraviolet video data, again the ultraviolet video data that obtains is carried out the branch frame and handle and obtain above-mentioned ultraviolet image.Therein in example, the picture that can divide frame to be treated to 30 frames through video, concrete picture format can be done different settings, for example JPG form, jpeg format or the like according to actual needs.
Below specify with regard to one of them concrete example.
Illustrated among Fig. 3 in the concrete example and carrying out the arrangement synoptic diagram of discharge examination testing ground, the synoptic diagram of 500kV Living water washing mode in the concrete example has been shown among Fig. 4.In shown in Figure 3, be operational outfit to be carried out Living water washing and to obtain ultraviolet image again behind the video data be that example describes through gathering, this illustrating not in order to the present invention program is constituted qualification with three water spray hydraulic giants.
At first; Selected shooting angle and shooting point; Ultraviolet image checkout equipment or above-mentioned ultraviolet imagery appearance 301 are arranged on apart from 8～16 meters of charging equipment 302 horizontal ranges; Can the correlation parameter of ultraviolet image checkout equipment or ultraviolet imagery appearance being provided with simultaneously, is example with the ultraviolet imagery appearance, its UV gain can be set be 40%～80%, the UV threshold values is 100%, the zoom multiple is not less than * and 0.5, the count cycle is not more than 0.02 second.
Then; Carry out Living water washing through 303 pairs of charging equipments of Living water washing equipment 302; In the Living water washing process, through ultraviolet image checkout equipment or ultraviolet imagery appearance service band in the Living water washing process is monitored at the ultraviolet image of 240～280nm, specifically can be charging equipment to be rinsed the position carry out track up; The dynamic image that obtains taking; Dynamic image is made up of each frame ultraviolet image, comprises the real-time numerical value of detected ultraviolet photon in each frame ultraviolet image of dynamic image, can also include simultaneously the information such as major parameter and state indication of ultraviolet imagery appearance.
Based on the ultraviolet photon numerical value in the ultraviolet image; This ultraviolet photon numerical value and preset ultraviolet photon early warning value are compared; When this ultraviolet photon numerical value is greater than or equal to preset ultraviolet photon early warning value; Send warning message, prompting flushing personnel stop the Living water washing process immediately, reach that the purpose towards the sudden strain of a muscle accident takes place charging equipment in the prevention of water flushing process.
Wherein, above-mentioned dynamic image can divide frame to be treated to the multiframe picture through video, for example is treated to 30 frame JPG format pictures.Through the picture behind minute frame, in the time of can obtaining the diverse location of Living water washing to charging equipment, the detected ultraviolet photon numerical value of ultraviolet imagery appearance helps charging equipment corona discharge phenomenon in the Living water washing process is carried out quantitative test.
In addition, in above-mentioned testing process, can also carry out record to other experiment condition, for example observation place, charging equipment title, weather, environment temperature, humidity, instrument gain, measuring distance or the like.Photon number has consistent variation tendency and statistical law with electrical equipment corona discharge measurer in the unit interval that the ultraviolet imagery appearance detects; Along with corona discharge is strong; Photon number in unit interval increases and saturated phenomenon occurs, detects after it gains if saturated then will the reduction occur again.
Utilize the inventive method, carried out experimental test at certain outdoor, in this experimental test, according to the laying mode shown in Fig. 3, wash with the backwashing manner shown in Fig. 4, backwashing manner is that three rifles one dash total flush time 18s three times.
In this experimental test, used two kinds of support insulators to wash experiment, a kind of is ZSW1-550/10, and creepage distance is 14685mm, and total length is 4400mm; Another kind is ZSW1-550/8, and creepage distance is 11515mm, and total length is 4000mm.Support insulator is three stage structure, comprises joint, middle joint and following joint pillar.Under close, the grey close situation of different salt, charging equipment corona discharge quantitative analysis results is seen table 1, table 2 in the Living water washing process.Ultraviolet photon numerical value jump constantly corresponding support insulator be rinsed the position generally last joint pillar apart from the lower end 1/3 place; Dash the sudden strain of a muscle dangerous point for being rinsed charging equipment here; Near the support insulator high-pressure side; Ultraviolet photon counting maximal value can be defined as ultraviolet image photon counting alarming value with 6000 all less than 6000.Based on above-mentioned experimental test; Discharge scenario during Living water washing effectively detects well; Thereby can assess the security of Living water washing operation effectively, can effectively prevent the sudden strain of a muscle accident of dashing of charging equipment in the Living water washing process.
Table 1 different salt ash is close down, ZSW1-550/10 t shore insulator ultraviolet photon counting maximal value
| Close (the mg/cm of salt 2) | Close (the mg/cm of ash 2) | Ultraviolet photon counting maximal value |
| 0.02 | 0.5 | 2005 |
| 0.05 | 0.5 | 1944 |
| 0.05 | 1.5 | 3870 |
| 0.1 | 1.0 | 2635 |
| 0.3 | 0.5 | 2406 |
| 0.3 | 1.5 | 3092 |
Table 2 different salt ash is close down, ZSW1-550/8 t shore insulator ultraviolet photon counting maximal value
| Close (the mg/cm of salt 2) | Close (the mg/cm of ash 2) | Ultraviolet photon counting maximal value |
| 0.02 | 0.5 | 1869 |
| 0.05 | 1.5 | 1790 |
| 0.1 | 0.5 | 1962 |
| 0.3 | 0.5 | 5943 |
Through aforesaid the present invention program; Can learn that the present invention program is that the ultraviolet image when coming Living water washing through the ultraviolet image pick-up unit detects, during detection; The ultraviolet image pick-up unit need not directly to contact with operational outfit; Be with operational outfit condition separated by a distance under detect, therefore can accomplish not have a power failure, do not change system running state, thereby can monitor the time of day information of operational outfit under the flushing state.In addition, when carrying out the detection of ultraviolet image, need not needs auxiliary source as ultrasound wave or the Non-Destructive Testing of x ray; Need not conventional preventive trial pick-up unit; Diagnostic means is single, easy to operate, and ultraviolet image can image, demonstrate equipment state intuitively, convenient convenient.
The above embodiment has only expressed several kinds of embodiments of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the present invention's design, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with accompanying claims.
Claims (10)
1. a 500kV Living water washing safety detection method is characterized in that, comprises step:
Monitor the ultraviolet image of service band in setting wavelength band in the Living water washing process in real time;
Obtain the ultraviolet photon numerical value in the said ultraviolet image;
Judge whether said ultraviolet photon numeral is greater than or equal to preset ultraviolet photon early warning value, if send warning message.
2. 500kV Living water washing safety detection method according to claim 1 is characterized in that said setting wavelength band is 240～280 nanometers.
3. 500kV Living water washing safety detection method according to claim 1 and 2 is characterized in that, from the said ultraviolet image of position monitoring apart from the charging equipment horizontal range predeterminable range place of being washed by said Living water washing process.
4. 500kV Living water washing safety detection method according to claim 3 is characterized in that said predeterminable range is 8～16 meters.
5. a 500kV Living water washing safety detection device is characterized in that, comprising:
Ultraviolet photon numerical value acquiring unit is used for obtaining the ultraviolet photon numerical value of ultraviolet image, and this ultraviolet image is in the Living water washing process of monitoring in real time, the ultraviolet image of service band in setting wavelength band;
Judging unit is used to judge whether said ultraviolet photon numeral is greater than or equal to preset ultraviolet photon early warning value;
Alarm unit is used in the judged result of said judging unit sending warning message when being.
6. 500kV Living water washing safety detection device according to claim 5 is characterized in that, also comprises:
The ultraviolet image checkout equipment is used for monitoring in real time the said ultraviolet image of Living water washing process service band in setting wavelength band.
7. 500kV Living water washing safety detection device according to claim 6 is characterized in that said ultraviolet image checkout equipment is the ultraviolet imagery appearance.
8. according to claim 5 or 6 or 7 described 500kV Living water washing safety detection devices, it is characterized in that said setting wavelength band is 240～280 nanometers.
9. according to claim 5 or 6 or 7 described 500kV Living water washing safety detection devices; It is characterized in that said ultraviolet image checkout equipment is from the said ultraviolet image of position monitoring apart from the charging equipment horizontal range predeterminable range place of being washed by said Living water washing process.
10. 500kV Living water washing safety detection device according to claim 9 is characterized in that said predeterminable range is 8～16 meters.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103157615A (en) * | 2013-03-06 | 2013-06-19 | 广东电网公司佛山供电局 | Test method for live water washing operation for 500kV power transformation device |
| CN103280062A (en) * | 2013-04-28 | 2013-09-04 | 广东电网公司佛山供电局 | Safe protection method and device for electrified water washing for power transmission line |
| CN104998856A (en) * | 2015-07-31 | 2015-10-28 | 中国能源建设集团广东火电工程有限公司 | Electrified water washing device and method |
| CN108020520A (en) * | 2016-10-31 | 2018-05-11 | 深圳市朗驰欣创科技股份有限公司 | A kind of control method and device of charging equipment water flushing device people |
| CN112666380A (en) * | 2020-11-30 | 2021-04-16 | 广东电网有限责任公司 | Safety diagnosis system and method for live water washing of transformer substation |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103157615A (en) * | 2013-03-06 | 2013-06-19 | 广东电网公司佛山供电局 | Test method for live water washing operation for 500kV power transformation device |
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| CN108020520A (en) * | 2016-10-31 | 2018-05-11 | 深圳市朗驰欣创科技股份有限公司 | A kind of control method and device of charging equipment water flushing device people |
| CN112666380A (en) * | 2020-11-30 | 2021-04-16 | 广东电网有限责任公司 | Safety diagnosis system and method for live water washing of transformer substation |
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Application publication date: 20121024 |