CN206804801U - A kind of detecting system of accurate measurement inside switch cabinet shelf depreciation - Google Patents
A kind of detecting system of accurate measurement inside switch cabinet shelf depreciation Download PDFInfo
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- CN206804801U CN206804801U CN201720414109.9U CN201720414109U CN206804801U CN 206804801 U CN206804801 U CN 206804801U CN 201720414109 U CN201720414109 U CN 201720414109U CN 206804801 U CN206804801 U CN 206804801U
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- optical
- divider
- data processing
- electrical
- cabinet
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Abstract
It the utility model is related to transient earth voltage（TEV）Field of measuring technique, especially a kind of detecting system of accurate measurement inside switch cabinet shelf depreciation, it includes divider, data processing cabinet, synchronizer trigger and optical-electrical converter and display terminal；Divider is placed in shielding box, and equipped with detection wire clamp and earthing clamp；Power module and data processing unit, optical trigger and electrical to optical converter are provided with data processing cabinet, data processing cabinet is handled the electric signal on divider, and converts electrical signals to optical signal；Electrical to optical converter connects optical-electrical converter by optical cable, and carries out real-time Transmission to optical signal under the triggering of synchronizer trigger；Optical-electrical converter converts optical signals into electric signal and transmitted to display terminal；The utility model anti-electromagnetic interference capability is strong, realizes TEV sizes and the transient characterisitics of waveform on accurate measurement switch board housing, facilitates and finds out partial discharge position in switch cubicle rapidly.
Description
Technical field
It the utility model is related to transient earth voltage（TEV）Field of measuring technique, in especially a kind of accurate measurement switch cubicle
The detecting system of portion's shelf depreciation.
Background technology
Currently, because the built-in electrical insulation of switch cubicle breaks down, when it is being connected to the grid operation, in inside switch cabinet meeting
Partial discharge phenomenon be present, this seriously affects the normal operation of power network, and the personal safety to staff is brought greatly
Threaten.
At present, mainly have supercritical ultrasonics technology and TEV methods to the measuring method of apparatus local discharge, wherein equipment surface electric discharge and
Corona discharge is adapted to measure using supercritical ultrasonics technology；It is adapted to measure using TEV methods for device interior electric discharge.It is well known that switch
Cabinet is closed equipment, and switch cubicle is when carrying out normal distribution operation, in order to ensure power supply safety and field personnel
Personal safety, do not allow operationally to open its cabinet door, so as to be difficult to measure inside switch cabinet equipment by using TEV methods
Shelf depreciation situation.However, when shelf depreciation occurs for inside switch cabinet equipment, discharge capacity is concentrated mainly on switch-cabinet grounding
The inner surface of screen layer, and there is part electricity to be coupled under magnetic fields on the shell of switch cubicle, form a transient state
Voltage-to-ground, thus the transient earth voltage to switch board housing can also be passed through（TEV）Measure to realize in it indirectly
Portion apparatus local discharge position and the judgement of discharge capacity size.But due to the electromagnetic interference of site environment, and detection signal
There is also certain decay in communication process, so as to be difficult to the transient state of the accurate TEV sizes and waveform for obtaining switch board housing
Characteristic, this detection to switch cubicle internal unit shelf depreciation bring certain difficulty.
The content of the invention
The purpose of this utility model seeks to solve currently due to the electromagnetic interference of site environment, and detection signal is passing
Existing decay during broadcasting, it is difficult to the transient characterisitics of the accurate TEV sizes and waveform for obtaining switch board housing, and with this reality
The problem of now being detected to inside switch cabinet shelf depreciation, a kind of accurate measurement inside switch cabinet shelf depreciation is provided for this
Detecting system.
Concrete scheme of the present utility model is：A kind of detecting system of accurate measurement inside switch cabinet shelf depreciation, it is special
Sign is：Including divider, data processing cabinet, synchronizer trigger and electro-optic detector and display terminal；The divider is placed in
In shielding box, and equipped with the corresponding detection wire clamp and earthing clamp to match with the test side of divider and earth terminal, shielding
Cover offered on box three be used for thread through hole；The data processing cabinet has the cabinet of function of shielding, is provided with and uses in cabinet
In the power module and data processing unit, the light trigget and electrical to optical converter that provide working power, data processing unit
The voltage signal transmitted from the output end of divider is received, for voltage signal to be carried out into voltage stabilizing, filtering and pulsewidth modulation
And power amplification processing, and under the triggering of light trigget, optical signal is converted electrical signals to by electrical to optical converter；Institute
State electrical to optical converter and electro-optic detector is connected by optical cable, and optical signal is passed in real time under the triggering of synchronizer trigger
It is defeated；After the electro-optic detector converts optical signals to electric signal, display terminal is transferred to again, by display terminal by voltage
Waveform is shown.
Divider described in the utility model selects model Pintech P6039A resistive impedance divider；It is described
Shielding box is made up of lid and box body, equipped with least two elastic clamp seats to match with divider in box body；The detection
Wire clamp is provided with the socket to match with the test side of divider.
Data processing unit described in the utility model is by filter circuit of pressure-stabilizing, pulse-width modulation circuit and low-pass filter circuit
And amplifier is connected in sequence.
Display terminal described in the utility model includes oscillograph or remote computer, and wherein oscillograph selects model
Yokogawa DLM1954 digital storage oscilloscope.
The utility model is simple in construction, ingenious in design, realizes at the scene or remote display terminals real-time and accurately obtain
The TEV sizes of switch board housing and the transient characterisitics of waveform, facilitate and find out partial discharge position in switch cubicle rapidly, detecting
During effectively prevent the electromagnetic environment of live complexity to detecting the influences of data, and by using different triggering systems,
It further ensure that the comprehensive and accuracy of the TEV waveforms of acquisition.
Brief description of the drawings
Fig. 1 is structural representation of the utility model when carrying out TEV detections；
Fig. 2 is control structure block diagram of the present utility model；
Fig. 3 is the framework map of data processing unit in the utility model；
Fig. 4 is mounting structure schematic diagram of the divider in shielding box in the utility model.
In figure：1-divider, 2-data processing cabinet, 3-synchronizer trigger, 4-electro-optic detector, 5-display is eventually
End, 5a-oscillograph, 5b-remote computer, 6-shielding box, 6a-lid, 6b-box body, 7-detection wire clamp, 8-ground wire
Folder, 9-through hole, 10-switch cubicle, 11-grounding copper bar, 12-cabinet, 13-power module, 14-data processing unit,
15-light trigget, 16-electrical to optical converter, 17-optical cable, 18-synchronizer trigger, 19-elastic clamp seat, 20-insert
Seat, 21-filter circuit of pressure-stabilizing, 22-pulse-width modulation circuit, 23-low-pass filter circuit, 24-amplifier.
Embodiment
Referring to Fig. 1, Fig. 4, a kind of detecting system of accurate measurement inside switch cabinet shelf depreciation, including divider 1, data
Handle cabinet 2, synchronizer trigger 3 and electro-optic detector 4 and display terminal 5；The divider 1 is placed in shielding box 6, and is matched somebody with somebody
The corresponding detection wire clamp 7 and earthing clamp 8 to match with the test side of divider 1 and earth terminal is had, is opened up on shielding box 6
Have three be used for thread through hole 9.Due to when shelf depreciation occurs for the inside relevant device of switch cubicle 10, having part electricity meeting
It is coupled under magnetic fields on the shell of switch cubicle 10, thus need to only carries out TEV detections to its shell.In detection,
Operation is as follows：The signal transmssion line for detecting wire clamp 7 is clamped in switch through one of through hole on shielding box 6, detection wire clamp 7
Detection position on the shell of cabinet 10；By the signal transmssion line of earthing clamp 8 through another through hole on shielding box 6, it is grounded
Folder 8 is clamped on pre-buried grounding copper bar 11, and path is formed over the ground so as to the shell of switch cubicle 10；At the same time, by divider 1
The upper output end between two divider resistances connects data processing cabinet by wire.
Referring to Fig. 2, the data processing cabinet 2 has the cabinet 12 of function of shielding, provided with work in cabinet 12
Power module 13 and data processing unit 14, the light trigget 15 and electrical to optical converter 16 of power supply, data processing unit 14
The voltage signal transmitted from the output end of divider 1 is received, for voltage signal to be carried out into voltage stabilizing, filtering and pulsewidth modulation
And power amplification processing, and under the triggering of light trigget 15, light letter is converted electrical signals to by electrical to optical converter 16
Number；The electrical to optical converter 16 connects electro-optic detector 4 by optical cable 17, and light is believed under the triggering of synchronizer trigger 18
Number carry out real-time Transmission；After the electro-optic detector 4 converts optical signals to electric signal, display terminal 5 is transferred to again, by
Display terminal 5 shows voltage waveform.
Resistive impedance divider of the divider 1 described in the present embodiment from model Pintech P6039A；It is described
Shielding box 6 is made up of lid 6a and box body 6b, and two elastic clamp seats 19 to match with divider 1 are housed in box body 6b；Institute
State detection wire clamp 7 and be provided with the socket 20 to match with the test side of divider 1.
Referring to Fig. 3, data processing unit 14 described in the present embodiment is by filter circuit of pressure-stabilizing 21, the and of pulse-width modulation circuit 22
Low-pass filter circuit 23 and amplifier 24 are connected in sequence.
Display terminal 5 described in the present embodiment includes oscillograph 5a or remote computer 5b, and wherein oscillograph 5a selects model
For Yokogawa DLM1954 digital storage oscilloscope.
Claims (4)
1. a kind of detecting system of accurate measurement inside switch cabinet shelf depreciation, it is characterized in that：Including divider, data processing
Cabinet, synchronizer trigger and electro-optic detector and display terminal；The divider is placed in shielding box, and equipped with it is corresponding with
The detection wire clamp and earthing clamp that the test side of divider and earth terminal match, three are offered on shielding box and is used to thread
Through hole；The data processing cabinet has the cabinet of function of shielding, the interior power module provided with working power of cabinet
And data processing unit, light trigget and electrical to optical converter, data processing unit receives to be transmitted from the output end of divider
The voltage signal to come over, handled for voltage signal to be carried out into voltage stabilizing, filtering and pulsewidth modulation and power amplification, and light-
Under the triggering of electric trigger, optical signal is converted electrical signals to by electrical to optical converter；The electrical to optical converter is connected by optical cable
Electro-optic detector is connect, and real-time Transmission is carried out to optical signal under the triggering of synchronizer trigger；The electro-optic detector is by light
After signal is converted to electric signal, display terminal is transferred to again, is shown voltage waveform by display terminal.
2. a kind of detecting system of accurate measurement inside switch cabinet shelf depreciation according to claim 1, it is characterized in that：Institute
State the resistive impedance divider that divider selects model Pintech P6039A；The shielding box is by lid and box body group
Into equipped with least two elastic clamp seats to match with divider in box body；The detection wire clamp is provided with and divider
The socket that test side matches.
3. a kind of detecting system of accurate measurement inside switch cabinet shelf depreciation according to claim 1, it is characterized in that：Institute
State data processing unit be sequentially connected by filter circuit of pressure-stabilizing, pulse-width modulation circuit and low-pass filter circuit and amplifier and
Into.
4. a kind of detecting system of accurate measurement inside switch cabinet shelf depreciation according to claim 1 or 2 or 3, it is special
Sign is：The display terminal includes oscillograph or remote computer, and wherein oscillograph is from model Yokogawa DLM1954's
Digital storage oscilloscope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720414109.9U CN206804801U (en) | 2017-04-19 | 2017-04-19 | A kind of detecting system of accurate measurement inside switch cabinet shelf depreciation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720414109.9U CN206804801U (en) | 2017-04-19 | 2017-04-19 | A kind of detecting system of accurate measurement inside switch cabinet shelf depreciation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206804801U true CN206804801U (en) | 2017-12-26 |
Family
ID=60733376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720414109.9U Expired - Fee Related CN206804801U (en) | 2017-04-19 | 2017-04-19 | A kind of detecting system of accurate measurement inside switch cabinet shelf depreciation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206804801U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109669107A (en) * | 2018-11-23 | 2019-04-23 | 内蒙古电力（集团）有限责任公司内蒙古超高压供电局 | Simulate the device and its analogy method of shelf depreciation |
-
2017
- 2017-04-19 CN CN201720414109.9U patent/CN206804801U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109669107A (en) * | 2018-11-23 | 2019-04-23 | 内蒙古电力（集团）有限责任公司内蒙古超高压供电局 | Simulate the device and its analogy method of shelf depreciation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171226 Termination date: 20180419 |