CN109142997A - Switchgear detection system and method - Google Patents
Switchgear detection system and method Download PDFInfo
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- CN109142997A CN109142997A CN201811012920.XA CN201811012920A CN109142997A CN 109142997 A CN109142997 A CN 109142997A CN 201811012920 A CN201811012920 A CN 201811012920A CN 109142997 A CN109142997 A CN 109142997A
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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
- G01R31/1227—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 of components, parts or materials
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Abstract
The present invention relates to electric device maintenance technical field, a kind of switchgear detection system and method are provided, the system comprises: transient earth voltage sensor, extra-high video sensor, ultrasonic sensor and controller；Transient earth voltage sensor, the transient earth voltage of detection switch cabinet；Extra-high video sensor, for obtaining the ultrahigh-frequency signal of partial discharge of switchgear fault point；Ultrasonic sensor, the ultrasonic signal for detection switch cabinet；The controller, for judging switchgear with the presence or absence of abnormal according to the transient earth voltage: if switchgear has exception, the electric discharge type information of partial discharge of switchgear is then determined according to the ultrasonic signal, and the location information of partial discharges fault point is determined according to the ultrahigh-frequency signal, and the electric discharge type information and the location information are sent to server.Above-mentioned switchgear detection system can be realized accurate detection and positioning to switchgear partial discharges fault.
Description
Technical field
The invention belongs to electric device maintenance technical fields, more specifically, be related to a kind of switchgear detection system and
Method.
Background technique
The insulating inner of high voltage electric equipment is constantly present some defects, such as bubble gap, impurity, spine, in forceful electric power
The non-uniform electric for making apparatus insulated inside under field action increases in the electric field strength of rejected region, to be easy to lead
The position is caused to occur not through the electric discharge entirely insulated, i.e. shelf depreciation.Shelf depreciation will not generally cause the penetrability of insulation
Breakdown, but will lead to the local damage of dielectric.If its long-term existence can cause seal under certain condition
The destruction of electrical strength ultimately causes apparatus insulated breakdown.
The insulating capacity of switchgear be determine switchgear can safe and stable operation an important factor for.Switchgear field test
The insulation fault that the deficiency of method and the switchgear to put into operation occur seriously threatens the safe operation of electric system.Rely solely on biography
The methods such as preventive trial, pressure test and the walkaround inspection of system, can not promptly and accurately grasp inside switch cabinet part
Discharge defect.The shelf depreciation hidden danger for how finding switchgear accurately and in time, is a problem to be solved.
Summary of the invention
The purpose of the present invention is to provide a kind of switchgear detection system and methods, it is intended to which solving prior art center can not
The problem of timely and accurately finding the shelf depreciation hidden danger in switchgear.
The first aspect of the embodiment of the present invention provides a kind of switchgear detection system, comprising: transient earth voltage sensor, spy
High frequency sensors, ultrasonic sensor and controller；
The transient earth voltage sensor for the transient earth voltage of detection switch cabinet, and is sent to the controller；
The extra-high video sensor for obtaining the ultrahigh-frequency signal of partial discharge of switchgear fault point, and is sent to institute
State controller；
The ultrasonic sensor for the ultrasonic signal of detection switch cabinet, and is sent to the controller；
The controller, for judging switchgear with the presence or absence of abnormal according to the transient earth voltage: if switchgear exists
It is abnormal, then the electric discharge type information of partial discharge of switchgear is determined according to the ultrasonic signal, and according to the superfrequency
Signal determines the location information of partial discharges fault point, and the electric discharge type information and the location information are sent to service
Device.
Optionally, the extra-high video sensor is multiple；
The controller, specifically for calculating the time difference for the pulse signal that the extra-high video sensor of any two receives,
By the statistics to positioning result several times, the distance of partial discharges fault point two extra-high video sensors of distance is shown.
Optionally, the switchgear detection system further includes condensation-preventing device；
The condensation-preventing device is connect with the controller, is put for obtaining the electric discharge type information, and according to described
Electric type information adjustment is to the frequency for carrying out eliminating condensation in switchgear.
Optionally, the condensation-preventing device includes: the first temperature and humidity degree sensor, the second Temperature Humidity Sensor, fan, adds
Backing, semi-conductor condensation module and condensation-preventing controller；
First Temperature Humidity Sensor obtains the first temperature and humidity information in switchgear for setting in switchgear,
And it is sent to the condensation-preventing controller；
Second Temperature Humidity Sensor obtains the second temperature and humidity information outside switchgear for setting outside switchgear,
And it is sent to the condensation-preventing controller；
The condensation-preventing controller, for obtaining the electric discharge type information and being determined according to the first temperature and humidity information
Dew-point temperature, according to the electric discharge type information, the dew-point temperature, the first temperature and humidity information and second temperature and humidity
Information generates anti-condensation control signal；
The semi-conductor condensation module is believed for obtaining the anti-condensation control signal, and according to the anti-condensation control
Number the damp-heat air in switchgear is condensed, and condensed water is passed through outside drainpipe waste cock cabinet cabinet；
The heating sheet, for obtaining the anti-condensation control signal, and according to the anti-condensation control signal to switch
Air in cabinet carries out heating and generates hot-air；
The fan, for obtaining the anti-condensation control signal, and according to the anti-condensation control signal to the heat
Air is blowed, and the hot-air is made to form circulation in switchgear.
Optionally, the switchgear detection system further include: dust-extraction unit；
The dust-extraction unit, for obtaining the electric discharge type information, and according to electric discharge type information adjustment
The dedusting frequency of dust-extraction unit.
Optionally, the dust-extraction unit includes: dust sensor, dedusting module and dedusting controller；
The dust sensor obtains the dust information in switchgear, and be sent to described for being arranged in switchgear
Dedusting controller；
The dedusting controller, for obtaining the electric discharge type information, and according to the electric discharge type information with it is described
Dust information generates dedusting and controls signal, and dedusting control signal is sent to the dedusting module；
The dedusting module, for controlling signal to being dusted operation in switchgear according to the dedusting.
Optionally, switchgear detection system further include: smoke sensor device and smog-control device；
The smoke sensor device obtains the smog information in switchgear, and be sent to described for being arranged in switchgear
Smog-control device；
The smog-control device, for the smog information to be compared with default smog threshold value, generation alarm signal,
And the alarm signal is sent to server.
The second aspect of the embodiment of the present invention provides a kind of switchgear detection method, comprising:
Obtain transient earth voltage, ultrahigh-frequency signal and the ultrasonic signal in switchgear；
Judge switchgear with the presence or absence of abnormal according to the transient earth voltage:
If switchgear has exception, determine that the electric discharge type of partial discharge of switchgear is believed according to the ultrasonic signal
Breath, and determine according to the ultrahigh-frequency signal location information of partial discharges fault point, and by the electric discharge type information with
The location information is sent to server.
Optionally, the location information that partial discharges fault point is determined according to the ultrahigh-frequency signal, comprising:
The time difference for calculating the ultrahigh-frequency signal that the extra-high video sensor of any two receives, by being tied to positioning several times
The statistics of fruit obtains the distance of partial discharges fault point two extra-high video sensors of distance, and generates the location information.
Optionally, the electric discharge type information, comprising: along the electric discharge of face type, corona type electric discharge, cavity type electric discharge, suspend electricity
Position electric discharge is discharged with liquid medium.
The beneficial effect of switchgear detection system and method provided in an embodiment of the present invention is: compared with prior art,
Switchgear detection system provided in an embodiment of the present invention, by setting transient earth voltage sensor and according to the transient state of acquisition
The judgement switchgear of voltage simplicity whether there is data exception, secondly further be analyzed according to ultrasonic signal, shelf depreciation
Type finally using the interference of ultrahigh-frequency signal discharge mechanical oscillation, and positions partial discharges fault point, can be improved
The accuracy rate of fault detection of local discharge, avoid inside switch cabinet structure is complicated, interference source is more and local discharge signal compared with
In the case where small, the problem of can not accurately be detected to partial discharges fault using single detection method.
Detailed description of the invention
Fig. 1 is the structural block diagram of switchgear detection system provided by one embodiment of the present invention；
Fig. 2 is the structural block diagram for the switchgear detection system that further embodiment of this invention provides；
Fig. 3 is the structural block diagram of the condensation-preventing device for the switchgear detection system that yet another embodiment of the invention provides；
Fig. 4 is the flow chart of switchgear detection method provided by one embodiment of the present invention.
Appended drawing reference: transient earth voltage sensor 10, extra-high video sensor 20, ultrasonic sensor 30, controller 40 are prevented
Condensation device 50, the first Temperature Humidity Sensor 51, the second Temperature Humidity Sensor 52, fan 53, heating sheet 54, semi-conductor condensation mould
Block 55, dust-extraction unit 60.
Specific embodiment
In order to which technical problems, technical solutions and advantages to be solved are more clearly understood, tie below
Accompanying drawings and embodiments are closed, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only
To explain the present invention, it is not intended to limit the present invention.
Specific embodiment:
As shown in Figure 1, the first aspect of the embodiment of the present invention provides a kind of switchgear detection system, comprising: transient state it is electric
Pressure sensor 10, extra-high video sensor 20, ultrasonic sensor 30 and controller 40.
The transient earth voltage sensor 10 for the transient earth voltage of detection switch cabinet, and is sent to the controller
40。
The extra-high video sensor 20, for obtaining the ultrahigh-frequency signal of partial discharge of switchgear fault point, and is sent to
The controller 40.
The ultrasonic sensor 30 for the ultrasonic signal of detection switch cabinet, and is sent to the controller 40.
The controller 40, for judging switchgear with the presence or absence of abnormal according to the transient earth voltage: if switchgear is deposited
In exception, then the electric discharge type information of partial discharge of switchgear is determined according to the ultrasonic signal, and according to described extra-high
Frequency signal determines the location information of partial discharges fault point, and the electric discharge type information and the location information are sent to clothes
Business device.
The course of work of the switchgear detection system are as follows: the transient earth voltage sensor 10 obtains the transient state of switchgear
Ground voltage, and it is sent to the controller 40；The extra-high video sensor 20 obtains the extra-high of partial discharge of switchgear fault point
Frequency signal, and it is sent to the controller 40；The ultrasonic sensor 30, the ultrasonic signal of detection switch cabinet, and send
To the controller 40；The controller 40, for judging switchgear with the presence or absence of abnormal according to the transient earth voltage: if opening
It closes cabinet and there is exception, then determine the electric discharge type information of partial discharge of switchgear according to the ultrasonic signal, and according to institute
The location information that ultrahigh-frequency signal determines partial discharges fault point is stated, and the electric discharge type information and the location information are sent out
Give server.
Switchgear detection system provided in an embodiment of the present invention, can be improved the accuracy rate of fault detection of local discharge, keeps away
Exempt under in inside switch cabinet, structure is complicated, interference source is more and the lesser situation of local discharge signal, using single detection method
The problem of partial discharges fault can not accurately being detected.
Optionally, the electric discharge type information may include: along the electric discharge of face type, corona type electric discharge, cavity type electric discharge, suspend
Current potential electric discharge is discharged with liquid medium, can also include the corresponding strength of discharge information of each electric discharge type；
It is described to discharge along face type, it is the electric discharge type as caused by the moisture (condensation) and dust of insulator surface；
The corona type electric discharge, usually occurs around point electrode, usually there is tip out at the tip of electrical equipment
Electrode；
The cavity type electric discharge, usually occurs in the air gap of insulating materials.With product in manufacture, technique in installation process
Bad and insulation ag(e)ing and deterioration generate；
The floating potential discharge is electric potential floating and periphery after causing equipment to be powered due to equipment line poor contact
Component formed potential difference, therefore formed electric discharge；
The liquid medium electric discharge is that pointer tip discharges to the liquid medium of plate or the earth.
Optionally, the extra-high video sensor 20 is multiple；It is extra-high to be specifically used for calculating any two for the controller 40
The time difference for the pulse signal that video sensor 20 receives shows shelf depreciation by the statistics to positioning result several times
The distance of fault point distance two extra-high video sensors 20.
As shown in Fig. 2, in a specific embodiment, the switchgear detection system further includes condensation-preventing device 50.
The condensation-preventing device 50 is connect with the controller 40, for obtaining the electric discharge type information, and according to institute
The adjustment of electric discharge type information is stated to the frequency for carrying out eliminating condensation in switchgear.
Optionally, if the electric discharge type information includes discharging along the electric discharge of face type with liquid medium, the condensation-preventing device
50 increase the frequency for eliminating condensation according to the electric discharge type information.
As shown in figure 3, in a specific embodiment, the condensation-preventing device 50 include: the first temperature and humidity degree sensor,
Second Temperature Humidity Sensor 52, fan 53, heating sheet 54, semi-conductor condensation module 55 and condensation-preventing controller 40；
First Temperature Humidity Sensor 51 obtains the first temperature and humidity letter in switchgear for being arranged in switchgear
Breath, and it is sent to the condensation-preventing controller 40；
Second Temperature Humidity Sensor 52 obtains the second temperature and humidity letter outside switchgear for being arranged outside switchgear
Breath, and it is sent to the condensation-preventing controller 40；
The condensation-preventing controller 40, for obtain the electric discharge type information and according to the first temperature and humidity information it is true
Determine dew-point temperature, it is warm and humid according to the electric discharge type information, the dew-point temperature, the first temperature and humidity information and described second
It spends information and generates anti-condensation control signal；
The semi-conductor condensation module 55, for obtaining the anti-condensation control signal, and according to the anti-condensation control
Signal condenses the damp-heat air in switchgear, and condensed water is passed through outside drainpipe waste cock cabinet cabinet；
The heating sheet 54, for obtaining the anti-condensation control signal, and it is split according to the anti-condensation control signal
It closes the air in cabinet and carries out heating generation hot-air；
The fan 53, for obtaining the anti-condensation control signal, and according to the anti-condensation control signal to described
Hot-air is blowed, and the hot-air is made to form circulation in switchgear.
Optionally, the condensation-preventing controller 40, for believing in the first temperature and humidity information and second temperature and humidity
When the difference of breath is greater than default Threshold of Temperature And Humidity, alternatively, the difference in the first temperature and humidity information and the dew-point temperature is small
When default condensation threshold value, the anti-condensation control signal is generated, the semi-conductor condensation module 55 is according to the anti-condensation control
Signal processed condenses the damp-heat air in switchgear.The heating sheet 54 is with the fan 53 according to the anti-condensation control
Signal enabling makes to form thermal cycle in switchgear, promotes condensation evaporation.
The condensation-preventing controller 40 is also used to when the electric discharge type information includes the electric discharge along face type, according to
Strength of discharge along the electric discharge of face type reduces the default Threshold of Temperature And Humidity, increases the default condensation threshold value to improve elimination condensation
The frequency, the electric discharge type information include the corona type electric discharge when, according to corona type electric discharge strength of discharge reduce institute
Default Threshold of Temperature And Humidity is stated, increases the default condensation threshold value to improve the frequency for eliminating condensation.
The condensation-preventing controller 40 can also be compared as unit of day according to several days anti-condensation control signals
To with synthesis, generate the first anti-condensation control signal, it is described first it is anti-condensation control signal and the same day anti-condensation control signal
After addition, the second anti-condensation control signal is generated, the semi-conductor condensation module 55 is according to the described second anti-condensation control signal
Damp-heat air in switchgear is condensed.The heating sheet 54 is believed with the fan 53 according to the described second anti-condensation control
Number starting, makes to form thermal cycle in switchgear, promotes condensation evaporation.
For example, when first day anti-condensation control signal is respectively at morning 4 with 6, at dusk 17 when with described in control when 18
Condensation-preventing device 50 starts, when second day anti-condensation signal is respectively at morning 4 with 5, at dusk 18 when with described in control when 19
Condensation-preventing device 50 starts, then integrates first day and obtain the first anti-condensation control signal with second day anti-condensation control signal,
When first anti-condensation control signal control condensation-preventing device 50 is at 4,5,6 when, 17 when, 18 when, 19 when start, i.e., to first day
Done with second day condensation-proof control signal or operation.
Optionally, the switchgear detection system further include: dust-extraction unit 60；
The dust-extraction unit 60 adjusts institute for obtaining the electric discharge type information, and according to the electric discharge type information
State the dedusting frequency of dust-extraction unit 60.
Optionally, the dust-extraction unit 60 includes: dust sensor, dedusting module and dedusting controller 40；
The dust sensor obtains the dust information in switchgear, and be sent to described for being arranged in switchgear
Dedusting controller 40；
The dedusting controller 40, for obtaining the electric discharge type information, and according to the electric discharge type information and institute
It states dust information and generates dedusting control signal, and dedusting control signal is sent to the dedusting module；
The dedusting module, for controlling signal to being dusted operation in switchgear according to the dedusting.
Optionally, the dedusting controller 40, for the dust information to be compared with dust preset threshold, if institute
Dust information is stated greater than the dust preset threshold, then generates the dedusting control signal, the dedusting module is removed according to
Dirt controls signal, to being dusted operation in switchgear.
The dedusting controller 40 is also used to when the electric discharge type information includes the electric discharge along face type, according to along face
The strength of discharge of type electric discharge reduces the dust preset threshold to improve the dedusting frequency, includes described in the electric discharge type information
When corona type discharges, the dust preset threshold is reduced to improve the dedusting frequency according to the strength of discharge of corona type electric discharge.
Optionally, switchgear detection system further include: smoke sensor device and smog-control device 40；
The smoke sensor device obtains the smog information in switchgear, and be sent to described for being arranged in switchgear
Smog-control device 40；
The smog-control device 40 generates alarm signal for the smog information to be compared with default smog threshold value
Number, and the alarm signal is sent to server.
By the way that the smoke sensor device is arranged, the fire hazard of switchgear can be found in time.
As shown in figure 4, the second aspect of the embodiment of the present invention provides a kind of switchgear detection method, comprising:
Transient earth voltage, ultrahigh-frequency signal and ultrasonic signal in step 001, acquisition switchgear；
Step 002 judges switchgear with the presence or absence of abnormal according to the transient earth voltage:
If switchgear has exception, determine that the electric discharge type of partial discharge of switchgear is believed according to the ultrasonic signal
Breath, and determine according to the ultrahigh-frequency signal location information of partial discharges fault point, and by the electric discharge type information with
The location information is sent to server.
Switchgear detection method provided in an embodiment of the present invention, can be improved the accuracy rate of fault detection of local discharge, keeps away
Exempt under in inside switch cabinet, structure is complicated, interference source is more and the lesser situation of local discharge signal, using single detection method
The problem of partial discharges fault can not accurately being detected.
Optionally, the location information that partial discharges fault point is determined according to the ultrahigh-frequency signal, comprising:
Time difference of ultrahigh-frequency signal that the extra-high video sensor 20 of any two receives is calculated, by positioning several times
As a result statistics obtains the distance of distance two extra-high video sensors 20 of partial discharges fault point, and generates the location information.
Optionally, the electric discharge type information, comprising: along the electric discharge of face type, corona type electric discharge, cavity type electric discharge, suspend electricity
Position electric discharge is discharged with liquid medium.
It should be noted that it can be directly another when element is referred to as " being fixed on " or " being set to " another element
On one element or indirectly on another element.When an element is known as " being connected to " another element, it can
To be directly to another element or be indirectly connected on another element.
It is to be appreciated that term " length ", " width ", "upper", "lower", "front", "rear", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "top", "bottom" "inner", "outside" is that orientation based on the figure or position are closed
System, is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must have
Specific orientation is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present invention, the meaning of " plurality " is two or more,
Unless otherwise specifically defined.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. a kind of switchgear detection system characterized by comprising transient earth voltage sensor, extra-high video sensor, ultrasonic wave
Sensor and controller；
The transient earth voltage sensor for the transient earth voltage of detection switch cabinet, and is sent to the controller；
The extra-high video sensor for obtaining the ultrahigh-frequency signal of partial discharge of switchgear fault point, and is sent to the control
Device processed；
The ultrasonic sensor for the ultrasonic signal of detection switch cabinet, and is sent to the controller；
The controller, for judging switchgear with the presence or absence of abnormal according to the transient earth voltage: if there is exception in switchgear,
The electric discharge type information of partial discharge of switchgear is then determined according to the ultrasonic signal, and true according to the ultrahigh-frequency signal
Determine the location information of partial discharges fault point, and the electric discharge type information and the location information are sent to server.
2. switchgear detection system according to claim 1, which is characterized in that the extra-high video sensor is multiple；
The controller passes through specifically for calculating the time difference for the pulse signal that the extra-high video sensor of any two receives
To the statistics of positioning result several times, the distance of partial discharges fault point two extra-high video sensors of distance is shown.
3. switchgear detection system according to claim 1, which is characterized in that the switchgear detection system further includes preventing
Condensation device；
The condensation-preventing device is connect with the controller, for obtaining the electric discharge type information, and according to the electric discharge class
The adjustment of type information is to the frequency for carrying out eliminating condensation in switchgear.
4. switchgear detection system according to claim 1, which is characterized in that the condensation-preventing device includes: the first temperature
Moisturt register sensor, the second Temperature Humidity Sensor, fan, heating sheet, semi-conductor condensation module and condensation-preventing controller；
First Temperature Humidity Sensor obtains the first temperature and humidity information in switchgear, concurrently for being arranged in switchgear
Give the condensation-preventing controller；
Second Temperature Humidity Sensor obtains the second temperature and humidity information outside switchgear, concurrently for being arranged outside switchgear
Give the condensation-preventing controller；
The condensation-preventing controller, for obtaining the electric discharge type information and determining dew point according to the first temperature and humidity information
Temperature, according to the electric discharge type information, the dew-point temperature, the first temperature and humidity information and the second temperature and humidity information
Generate anti-condensation control signal；
The semi-conductor condensation module, for obtaining the anti-condensation control signal, and according to the anti-condensation control signal pair
Damp-heat air in switchgear is condensed, and condensed water is passed through outside drainpipe waste cock cabinet cabinet；
The heating sheet, for obtaining the anti-condensation control signal, and according to the anti-condensation control signal in switchgear
Air carry out heating generate hot-air；
The fan, for obtaining the anti-condensation control signal, and according to the anti-condensation control signal to the hot-air
It is blowed, the hot-air is made to form circulation in switchgear.
5. switchgear detection system according to claim 1, which is characterized in that the switchgear detection system further include:
Dust-extraction unit；
The dust-extraction unit adjusts the dedusting for obtaining the electric discharge type information, and according to the electric discharge type information
The dedusting frequency of device.
6. switchgear detection system according to claim 1, which is characterized in that the dust-extraction unit includes: dust sensing
Device, dedusting module and dedusting controller；
The dust sensor obtains the dust information in switchgear, and be sent to the dedusting for being arranged in switchgear
Controller；
The dedusting controller, for obtaining the electric discharge type information, and according to the electric discharge type information and the dust
Information generates dedusting and controls signal, and dedusting control signal is sent to the dedusting module；
The dedusting module, for controlling signal to being dusted operation in switchgear according to the dedusting.
7. switchgear detection system according to claim 1, which is characterized in that switchgear detection system further include: smog
Sensor and smog-control device；
The smoke sensor device obtains the smog information in switchgear, and be sent to the smog for being arranged in switchgear
Controller；
The smog-control device generates alarm signal, and will for the smog information to be compared with default smog threshold value
The alarm signal is sent to server.
8. based on a kind of switchgear detection method of the described in any item switchgear detection systems of claim 1-7, feature exists
In, comprising:
Obtain transient earth voltage, ultrahigh-frequency signal and the ultrasonic signal in switchgear；
Judge switchgear with the presence or absence of abnormal according to the transient earth voltage:
If switchgear has exception, the electric discharge type information of partial discharge of switchgear is determined according to the ultrasonic signal, and
And the location information of partial discharges fault point is determined according to the ultrahigh-frequency signal, and by the electric discharge type information and institute's rheme
Confidence breath is sent to server.
9. switchgear detection method according to claim 8, which is characterized in that described to be determined according to the ultrahigh-frequency signal
The location information of partial discharges fault point, comprising:
The time difference for calculating the ultrahigh-frequency signal that the extra-high video sensor of any two receives, by positioning result several times
Statistics, obtains the distance of partial discharges fault point two extra-high video sensors of distance, and generate the location information.
10. switchgear detection method according to claim 8 or claim 9, which is characterized in that the electric discharge type information, comprising:
It discharges along the electric discharge of face type, corona type electric discharge, cavity type electric discharge, floating potential discharge and liquid medium.
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| CN201811012920.XA CN109142997A (en) | 2018-08-31 | 2018-08-31 | Switchgear detection system and method |
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| CN110542842A (en) * | 2019-09-29 | 2019-12-06 | 广东电网有限责任公司 | 10kV switch cabinet partial discharge simulation device and method |
| CN110824307A (en) * | 2019-11-07 | 2020-02-21 | 国网江苏省电力有限公司盐城供电分公司 | Electrified positioning system that detects of inside insulation fault of closed cubical switchboard |
| CN111077416A (en) * | 2019-12-10 | 2020-04-28 | 云南电网有限责任公司曲靖供电局 | Low-cost ultra-wideband discharge signal detection device and detection method thereof |
| CN113866340A (en) * | 2021-08-31 | 2021-12-31 | 国网上海市电力公司 | Switch cabinet impulse voltage test and diagnosis method |
| CN113884846A (en) * | 2021-12-07 | 2022-01-04 | 山东理工大学 | Partial discharge and temperature rise online monitoring system for switch cabinet |
| CN113996440A (en) * | 2021-09-09 | 2022-02-01 | 华北电力大学 | Purification device for cooperatively treating VOCs waste gas based on plasma and electrostatic dust removal |
| CN117630612A (en) * | 2024-01-25 | 2024-03-01 | 国网辽宁省电力有限公司电力科学研究院 | Discharge detection device and method for mixed gas insulation substation equipment |
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| CN113996440B (en) * | 2021-09-09 | 2023-01-24 | 华北电力大学 | Purifier based on plasma and electrostatic precipitator coprocessing VOCs waste gas |
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