CN203405537U - Capacitive device electrification test and online monitoring integrated sampling device - Google Patents
Capacitive device electrification test and online monitoring integrated sampling device Download PDFInfo
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- CN203405537U CN203405537U CN201320470344.XU CN201320470344U CN203405537U CN 203405537 U CN203405537 U CN 203405537U CN 201320470344 U CN201320470344 U CN 201320470344U CN 203405537 U CN203405537 U CN 203405537U
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Abstract
The utility model discloses a capacitive device electrification test and online monitoring integrated sampling device The device is composed of a shielding aluminum box, a magnetic core, a compensation and output circuit module, a first connecting terminal bar, a second connecting terminal bar, an end-screen wire core wire, an end-screen wire shielding layer, a secondary coil and a detection coil. The device is simple in structure and easy to carry out on site.
Description
Technical field
The utility model relates to electrical equipment online monitoring and live testing technical field, specifically capacitive apparatus live testing and on-line monitoring integrative sampling device.
Background technology
Along with electric system is to super (spy) high pressure, large capacity, large System Development, the safe operation of electric system is increasing on the impact of national economy and people's lives.And capacitance type equipment is the primary element that forms electric system, be the basis that guarantees power supply reliability, the safe operation of capacitance type equipment is the prerequisite of power system security, stable, economical operation.Along with developing rapidly of the technology such as sensor, optical fiber, computing machine, under running status, the state of insulation of high voltage capacitive-type equipment being carried out to real-time on-line monitoring or live testing can the operating abundant information of equipment, understands the real-time state of insulation of high voltage capacitive-type equipment.Accurately and reliably measuring capacitance type equipment insulation state parameter (dielectric loss angle tan δ etc.) has great importance to the safety of electric system, economical operation.Current method of testing is mainly two kinds of live testing, on-line monitorings.
The technical way that capacitance type equipment insulation live testing and on-line monitoring are taked is at present to be connected wires and transformed by capacitance type equipment end shield, and zero magnetic flux small electric current sensor is installed, extraction equipment end shield electric current, and then analyze the apparatus insulated state that draws.On-line monitoring and live testing all need to be opened equipment end shield ground wire after equipment has a power failure, and then on-line monitoring sampling detector is installed, and then equipment end shield ground wire is restored, and carry out on-line monitoring when equipment normally moves.The safety of simultaneously using in order to ensure scene, prevents that unexpected (as the measurement lead-in wire disconnection of testing instrument for electrified) causes equipment end shield open circuit, increases the short circuit sheet and the discharge tube that are in parallel with zero magnetic flux current sensor end shield lead terminal.When on-line monitoring and live testing, short circuit sheet is open mode, and equipment end shield ground current is introduced in testing instrument for electrified, and discharge tube shields in measuring process.The configuration of short circuit sheet and discharge tube can realize the replacing to current sensor, but due to the breakpoint of the end shield line of its increase, so onsite user does not recommend this kind of mode to change sensor.
General zero magnetic flux current sensor is by magnetic core and be wound on secondary coil and the magnetic test coil on magnetic core, and compensation and output circuit module etc. partly form.By rig-site utilization, find, being arranged on on-the-spot zero magnetic flux current sensor has damaged condition to occur, after zero magnetic flux current sensor damages, due to equipment power failure difficulty, and it is more changed jobs, be difficult to implement, and then cause apparatus insulated on-line monitoring and live testing work to be affected.
In zero magnetic flux current sensor, compensating circuit module and output circuit module are owing to containing electron device, the probability of its damage is more much larger than magnetic core part, therefore the utility model is based on this, zero magnetic flux current sensor has been carried out to split-type design, compensating circuit and output circuit part are separated with other parts such as magnetic cores, between two parts, by wire, be connected, thereby when circuit part damages, can take equipment end shield line apart, also need not increase the breakpoint in end shield line and the circuit part of sensor is changed.
Utility model content
In order to meet when zero magnetic flux current sensor damages, need not take equipment end shield line apart, also need not increase the breakpoint in end shield line and the rapid wear circuit part of sensor is changed, the utility model provides a kind of capacitance type equipment live testing and on-line monitoring integrative sampling device.
The technical scheme that the utility model solves the problems of the technologies described above is as follows:
Capacitance type equipment live testing and on-line monitoring integrative sampling device, zero magnetic flux current sensor has been carried out to split-type design, flimsy compensation output circuit module and the other parts such as magnetic core are separated, between two parts, by terminal row wiring, be connected, thereby when compensation and output circuit module damage, can take equipment end shield line apart, also need not increase the breakpoint in end shield line and the circuit part of sensor is changed.
Capacitive apparatus live testing and on-line monitoring integrative sampling device, it forms by shielding aluminium box, magnetic core, compensation and output circuit module, the first connecting terminal block, the second connecting terminal block, end shield core line, end shield line screen layer, secondary coil and magnetic test coil.In shielding aluminium box, be provided with magnetic core, compensation and output circuit module, the first connecting terminal block, the second connecting terminal block, end shield core line, end shield line screen layer, secondary coil and magnetic test coil, end shield line screen layer is wrapped in outside end shield core line.
The first connecting terminal block, the second connecting terminal block are equipped with respectively in described compensation and output circuit module both sides, the first connecting terminal block has four Wiring ports, the second connecting terminal block also has four Wiring ports, first Wiring port is signal output, second Wiring port is power supply ground interface, the 3rd Wiring port is-12V interface that the 4th Wiring port is+12V interface.
Described secondary coil and magnetic test coil are wound on magnetic core, and the two is around on the contrary; Secondary coil is connected with output circuit module with compensation with second Wiring port by first Wiring port of the first connecting terminal block; Magnetic test coil is connected with output circuit module with compensation with the 4th Wiring port by the 3rd Wiring port of the first connecting terminal block.
Described end shield core line two ends pass shielding aluminium box; Described end shield line screen layer two ends pass shielding aluminium box, wherein one end ground connection.
The circuit of described compensation and output circuit module is by resistance R
1, R
2, R
3, R
4, R
5, R
6and R
7, capacitor C
1, C
2, C
3form with amplifier OPA1, OPA2.
Capacitor C
3, resistance R
7after one end parallel connection of one end after parallel connection and amplifier OPA2, be connected with first Wiring port signal output of the second connecting terminal block.C
3electric capacity, R
7after the negative pole of the other end after resistance parallel connection and amplifier OPA2 is in parallel and resistance R
5one end connect, resistance R
5the other end be connected with first Wiring port of the first connecting terminal block.The positive pole of amplifier OPA2 and resistance R
6one end connect, R
6other end ground connection.
Capacitor C
1, resistance R
3after one end of one end after parallel connection and amplifier OPA1 is in parallel and capacitor C
2one end connect and access second Wiring port of the first connecting terminal block, capacitor C
2the other end and resistance R
4one end connects, resistance R
4other end ground connection.
Capacitor C
1, resistance R
3after the negative pole of the other end after parallel connection and amplifier OPA1 is in parallel and resistance R
1one end connect, resistance R
1the other end access the 4th Wiring port ground connection of the first connecting terminal block.
The positive pole of amplifier OPA1 and resistance R
2one end connect, resistance R
2the other end access the 3rd Wiring port of the first connecting terminal block.
The utlity model has following beneficial effect:
Zero magnetic flux current sensor has been carried out to split-type design, flimsy compensation output circuit module and the other parts such as magnetic core are separated, between two parts, by wire, be connected, thereby when compensation and output circuit module damage, can take equipment end shield line apart, also need not increase the breakpoint in end shield line and the circuit part of sensor is changed.
Accompanying drawing explanation
Fig. 1 is the utility model capacitive apparatus live testing and on-line monitoring integrative sampling apparatus structure schematic diagram.
In figure, shielding aluminium box 1, magnetic core 2, compensation and output circuit module 3; The first connecting terminal block 4; The second connecting terminal block 5; End shield core line 6; End shield line screen layer 7; Secondary coil 8; Magnetic test coil 9.
Fig. 2 is the utility model compensation and output circuit modular structure schematic diagram.
In figure, resistance R
1, R
2, R
3, R
4, R
5, R
6, R
7, capacitor C
1, C
2, C
3, amplifier OPA1, amplifier OPA2.
Embodiment
Below in conjunction with accompanying drawing and concrete enforcement, the utility model is further described.
Capacitive apparatus live testing and on-line monitoring integrative sampling apparatus structure are as depicted in figs. 1 and 2, sensor is by shielding aluminium box 1, magnetic core 2, compensation and output circuit module 3, the first connecting terminal block 4, the second connecting terminal block 5, end shield core line 6, end shield line screen layer 7, secondary coil 8 and magnetic test coil 9 form, in shielding aluminium box 1, be provided with magnetic core 2, compensation and output circuit module 3, the first connecting terminal block 4, the second connecting terminal block 5, end shield core line 6, end shield line screen layer 7, secondary coil 8 and magnetic test coil 9, end shield line screen layer 7 is wrapped in outside end shield core line 6,
The first connecting terminal block 4, the second connecting terminal block 5 are equipped with respectively in described compensation and output circuit module 3 both sides, the first connecting terminal block 4 has four Wiring ports, the second connecting terminal block 5 also has four Wiring ports, first Wiring port is signal output, second Wiring port is power supply ground interface, the 3rd Wiring port is-12V interface that the 4th Wiring port is+12V interface;
Described secondary coil 8 and magnetic test coil 9 are wound on magnetic core 2, and the two is around on the contrary; Secondary coil 8 is connected with output circuit module 3 with compensation with second Wiring port by first Wiring port of the first connecting terminal block 4; Magnetic test coil 9 is connected with output circuit module 3 with compensation with the 4th Wiring port by the 3rd Wiring port of the first connecting terminal block 4;
Described end shield core line 6 two ends pass shielding aluminium box 1; Described end shield line screen layer 7 two ends pass shielding aluminium box 1, wherein one end ground connection;
The circuit of described compensation and output circuit module 3 as shown in Figure 2, by resistance R
1, R
2, R
3, R
4, R
5, R
6and R
7, capacitor C
1, C
2, C
3form with amplifier OPA1, OPA2;
Capacitor C
3, resistance R
7after one end parallel connection of one end after parallel connection and amplifier OPA2, be connected with first Wiring port signal output of the second connecting terminal block 5; C
3electric capacity, R
7after the negative pole of the other end after resistance parallel connection and amplifier OPA2 is in parallel and resistance R
5one end connect, resistance R
5the other end be connected with first Wiring port of the first connecting terminal block 4; The positive pole of amplifier OPA2 and resistance R
6one end connect, R
6other end ground connection;
Capacitor C
1, resistance R
3after one end of one end after parallel connection and amplifier OPA1 is in parallel and capacitor C
2one end connect and access second Wiring port of the first connecting terminal block 4, capacitor C
2the other end and resistance R
4one end connects, resistance R
4other end ground connection;
Capacitor C
1, resistance R
3after the negative pole of the other end after parallel connection and amplifier OPA1 is in parallel and resistance R
1one end connect, resistance R
1the other end access the 4th Wiring port ground connection of the first connecting terminal block 4;
The positive pole of amplifier OPA1 and resistance R
2one end connect, resistance R
2the other end access the 3rd Wiring port of the first connecting terminal block 4.
Utility model is specifically implemented:
Installation and the replacing of capacitive apparatus live testing and on-line monitoring integrative sampling device, specifically adopt following steps to realize:
1. equipment outage is transformed end shield core line 6 and end shield line screen layer 7, and the end shield core line 6 meeting the demands by appropriate length and wire diameter and end shield line screen layer 7 replace original end shield ground wire.One end of end shield core line 6 and end shield line screen layer 7 is fixed on the end shield point of monitored equipment;
2. the heart yearn of the other end of end shield core line 6 and end shield line screen layer 7 and screen layer are separated, by water joint, cause in the shielding aluminium box 1 of split type zero magnetic flux small electric current sensor;
3. in shielding aluminium box, end shield line screen layer 7 is directly connected with shielding aluminium box 1, and first end shield core line 6 through the magnetic core 2 of split type zero magnetic flux small electric current sensor, then draws shielding aluminium box 1 by water joint, is connected to monitored equipment earth point;
4. sensor power supply line and signal wire adopt four-core shielding line, by water joint, introduce shielding aluminum hull, with second Wiring port power supply ground interface of the second connecting terminal block 5 of split type zero magnetic flux small electric current sensor, be connected with first Wiring port signal output with live testing with capacitive apparatus on-line monitoring respectively;
5. in the time of need to changing capacitive apparatus on-line monitoring and live testing by the compensation of split type zero magnetic flux small electric current sensor and output circuit module 3, open after shielding aluminum hull 1, all connecting terminal blocks in compensation and output circuit module 3 are taken off, take out compensation and the output circuit module damaged, then new module is replaced with, all connecting terminal blocks in compensation and output circuit module 3 are loaded onto.
Claims (1)
1. capacitive apparatus live testing and on-line monitoring integrative sampling device, it is characterized in that, it forms by shielding aluminium box (1), magnetic core (2), compensation and output circuit module (3), the first connecting terminal block (4), the second connecting terminal block (5), end shield core line (6), end shield line screen layer (7), secondary coil (8) and magnetic test coil (9); In shielding aluminium box (1), be provided with magnetic core (2), compensation and output circuit module (3), the first connecting terminal block (4), the second connecting terminal block (5), end shield core line (6), end shield line screen layer (7), secondary coil (8) and magnetic test coil (9), end shield line screen layer (7) is wrapped in outside end shield core line (6);
The first connecting terminal block (4), the second connecting terminal block (5) are equipped with respectively in described compensation and output circuit module (3) both sides, the first connecting terminal block (4) has four Wiring ports, the second connecting terminal block (5) also has four Wiring ports, first Wiring port is signal output, second Wiring port is power supply ground interface, the 3rd Wiring port is-12V interface that the 4th Wiring port is+12V interface;
Described secondary coil 8) and magnetic test coil (9) to be wound on magnetic core (2) upper, the two is around on the contrary; Secondary coil (8) is connected with output circuit module (3) with compensation with second Wiring port by first Wiring port of the first connecting terminal block (4); Magnetic test coil (9) is connected with output circuit module (3) with compensation with the 4th Wiring port by the 3rd Wiring port of the first connecting terminal block (4);
Described end shield core line (6) two ends pass shielding aluminium box (1); Described end shield line screen layer (7) two ends pass shielding aluminium box (1), wherein one end ground connection;
The circuit of described compensation and output circuit module (3) is by resistance R
1, R
2, R
3, R
4, R
5, R
6and R
7, capacitor C
1, C
2, C
3form with amplifier OPA1, OPA2;
Capacitor C
3, resistance R
7after one end parallel connection of one end after parallel connection and amplifier OPA2, be connected with first Wiring port signal output of the second connecting terminal block (5); C
3electric capacity, R
7after the negative pole of the other end after resistance parallel connection and amplifier OPA2 is in parallel and resistance R
5one end connect, resistance R
5the other end be connected with first Wiring port of the first connecting terminal block (4); The positive pole of amplifier OPA2 and resistance R
6one end connect, R
6other end ground connection;
Capacitor C
1, resistance R
3after one end of one end after parallel connection and amplifier OPA1 is in parallel and capacitor C
2one end connect and access second Wiring port of the first connecting terminal block (4), capacitor C
2the other end and resistance R
4one end connects, resistance R
4other end ground connection;
Capacitor C
1, resistance R
3after the negative pole of the other end after parallel connection and amplifier OPA1 is in parallel and resistance R
1one end connect, resistance R
1the other end access the 4th Wiring port ground connection of the first connecting terminal block (4);
The positive pole of amplifier OPA1 and resistance R
2one end connect, resistance R
2the other end access the 3rd Wiring port of the first connecting terminal block (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320470344.XU CN203405537U (en) | 2013-08-02 | 2013-08-02 | Capacitive device electrification test and online monitoring integrated sampling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320470344.XU CN203405537U (en) | 2013-08-02 | 2013-08-02 | Capacitive device electrification test and online monitoring integrated sampling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203405537U true CN203405537U (en) | 2014-01-22 |
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ID=49941467
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320470344.XU Expired - Fee Related CN203405537U (en) | 2013-08-02 | 2013-08-02 | Capacitive device electrification test and online monitoring integrated sampling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203405537U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103399192A (en) * | 2013-08-02 | 2013-11-20 | 广西电网公司电力科学研究院 | Split type zero flux small electric current sensor for on-line monitoring and charged test of capacitive equipment |
-
2013
- 2013-08-02 CN CN201320470344.XU patent/CN203405537U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103399192A (en) * | 2013-08-02 | 2013-11-20 | 广西电网公司电力科学研究院 | Split type zero flux small electric current sensor for on-line monitoring and charged test of capacitive equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140122 Termination date: 20160802 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |