CN202614828U - Three-phase zero sequence combined type current sensing device - Google Patents
Three-phase zero sequence combined type current sensing device Download PDFInfo
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- CN202614828U CN202614828U CN 201220239805 CN201220239805U CN202614828U CN 202614828 U CN202614828 U CN 202614828U CN 201220239805 CN201220239805 CN 201220239805 CN 201220239805 U CN201220239805 U CN 201220239805U CN 202614828 U CN202614828 U CN 202614828U
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- zero sequence
- iron core
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Abstract
The present utility model discloses a three-phase zero sequence combined type current sensing device. The device comprises a phase sequence sensor, a zero sequence sensor and a signal sampling module, the phase sequence sensor is connected with the zero sequence sensor through an insulation fixing layer to form an integral structure, the phase sequence sensor and the zero sequence sensor comprise an iron core made of microcrystalline alloy and a secondary winding output as sensor signals, the secondary winding is wound on the iron core, and an output end of the secondary winding is connected with an input end of the signal sampling module. Epoxy resin casting is not required in the device, the formed appearance fits with the assembling form of a vacuum switch (cabinet). The structure fixed by the insulation fixing layer can be used for ensuring volume and quality of the device within a small scope, and ensuring an enough distance between an iron core and an iron core. thus high accuracy grade of output signals can be guaranteed, and enough accuracy of measuring results of the sensing device can be guaranteed.
Description
Technical field
The utility model relates to a kind of intelligent electric mesh element, is specially a kind of three-phase zero sequence combined type current sensor device.
Background technology
Power distribution network is important step in the electric system; Can the user obtain safe and reliable electric energy; Vacuum switch in the power distribution network (cabinet) plays an important role, and particularly intelligentized vacuum switch (cabinet) equipment has become the preferred unit in the distribution network system.
Lasting propelling along with intelligent electrical network construction; The user has proposed more higher demands to the vacuum switch (cabinet) that is used for line fault protection; Require switch integrated more perception of ability and measuring sensor; So that operations staff and opertaing device can obtain more circuit operation real-time information through switch, make switching control device can fast and reliable ground judge each fault that occurs on the circuit and handle.At present; Vacuum switch (cabinet) mainly is through electromagnetic current transducer to the perception and the measurement approach of line current; Traditional electromagnetic current transducer generally adopts poured with epoxy resin, and volume is big, and quality does not meet the development trend of controller switching equipment miniaturization greatly.Simultaneously, the easy magnetic saturation of traditional electromagnetic current transducer causes measurement range little, and frequency band is narrow.Obtained using more widely with being prone to realize though novel Rogowski coil has unsaturation, the temperature characterisitic of framework material and technique for coiling all can influence its measuring accuracy.So all there are certain defective in traditional electromagnetic current transducer and novel Rogowski coil.
Summary of the invention
To the problems referred to above, the three-phase zero sequence combined type current sensor device that the utility model provides that a kind of volume is little, light weight, precision are high, meet vacuum switch (cabinet) assembling form.
The utility model is that the technical scheme that its technical matters of solution is adopted is:
Three-phase zero sequence combined type current sensor device; Comprise phase sequence sensor, zero sequence sensor and sample of signal module; Said phase sequence sensor and zero sequence sensor are connected to become an one-piece construction through the insulation fixed bed; Phase sequence sensor and zero sequence sensor comprise iron core of being processed by microcrystallizing alloy and the Secondary Winding of exporting as sensor signal, and Secondary Winding is wrapped on the iron core, and the output terminal of Secondary Winding is connected with the input end of sample of signal module.
Wherein, the quantity of said phase sequence sensor is two or three, and the quantity of zero sequence sensor is one.
Said phase sequence sensor and zero sequence sensor are yi word pattern and distribute.
Centre distance in the middle of the iron core that said phase sequence sensor and zero sequence sensor are comprised is not less than 280mm.
Said iron core is annular or track shape structure.
The beneficial effect of the utility model is: the utility model is linked to be one-piece construction through the insulation fixed bed with phase sequence sensor and zero sequence sensor, need not carry out poured with epoxy resin, and the profile of formation meets vacuum switch (cabinet) assembling form.The fixing structure of this insulation fixed bed can guarantee that the size of device volume and quality all remains in the small range on the one hand; Can guarantee that on the other hand the distance between iron core and the iron core is enough; The signal that guarantees output can have sufficiently high accurate level, thereby the measurement result that guarantees sensing device has enough degree of accuracy.
Description of drawings
Further explain below in conjunction with accompanying drawing and embodiment:
Fig. 1 is the composition structural representation of the utility model.
Embodiment
The utility model is applied on the vacuum switch (cabinet).As shown in Figure 1, the three-phase zero sequence combined type current sensor device of the utility model comprises phase sequence sensor, zero sequence sensor and sample of signal module 1, and said phase sequence sensor and zero sequence sensor are connected to become an one-piece construction through insulation fixed bed 2.Phase sequence sensor and zero sequence sensor comprise iron core of being processed by microcrystallizing alloy 3 and the Secondary Winding of exporting as sensor signal 4, and Secondary Winding 4 is wrapped on the iron core 3.The output terminal of Secondary Winding 4 is connected with the input end of sample of signal module 1, connects the cable that is adopted and is preferably the cable that is provided with screen layer.The utility model is the combination of a plurality of centre path current sensors, and iron core 3 can adopt annular or track shape structure.The size of current that each current sensor can independent detection passes the conductor of its iron core 3.During use; Phase sequence sensor and zero sequence sensor sleeve are contained on the insulating sleeve of vacuum switch (cabinet); With the winding of the high-pressure conductor in the insulating sleeve as the sensor signal input; Be wrapped in Secondary Winding on the iron core 3 as the output terminal of current detection signal, to sample of signal module 1 output detection signal.Obtain magnitude of current signal after the signal of 1 pair of detection of sample of signal module is handled, this magnitude of current signal is delivered in the opertaing device and is further handled.
The maximum improvement of the utility model is to utilize the insulation fixed bed to carry out the fixing of phase sequence sensor and zero sequence sensor, replaces traditional poured with epoxy resin mode.After fixing, the insulation fixed bed is surrounded on the outer fix of phase sequence sensor and zero sequence sensor.Generally, phase sequence sensor and zero sequence sensor are yi word pattern and distribute, and this yi word pattern distributes generally and the distribution mode of present three-phase zero sequence line adapts.
The included zero sequence number of sensors of single combined type current sensor device is generally one, be used to detect the zero-sequence current size, and the quantity of phase sequence sensor can be two or three, is used for the size of current of three-phase alternating current three-phase or any two phases.During practical application; Confirm relation owing to exist between the phase current of three-phase and zero-sequence current; Behind the two phase phase currents and zero-sequence current in detecting three-phase, both can learn the phase current of an other phase through Theoretical Calculation, therefore two phase sequence sensors of operated by rotary motion can satisfy request for utilization when concrete the realization; And can save the consumption of iron core and winding, further reduce the volume and weight of sensing device.
For the precision that guarantees to measure, the centre distance in the middle of the iron core that phase sequence sensor and zero sequence sensor are comprised 3 should be not less than 280mm, guarantee that the sample of signal module can export accurate level and get phase sequence and zero sequence signal for the 10P25 level.In addition preferably, adopt high precision, precision resistance that temperature coefficient is little to measure in the sample of signal module.
The utlity model has little, the light weight of volume, highly sensitive, stable performance, secondary load is little, can realize characteristics such as great dynamic range current measurement.
Claims (5)
1. three-phase zero sequence combined type current sensor device; It is characterized in that comprising phase sequence sensor, zero sequence sensor and sample of signal module (1); Said phase sequence sensor and zero sequence sensor are connected to become an one-piece construction through insulation fixed bed (2); Phase sequence sensor and zero sequence sensor comprise iron core of being processed by microcrystallizing alloy (3) and the Secondary Winding of exporting as sensor signal (4); Secondary Winding (4) is wrapped on the iron core (3), and the output terminal of Secondary Winding (4) is connected with the input end of sample of signal module (1).
2. three-phase zero sequence combined type current sensor device according to claim 1, the quantity that it is characterized in that said phase sequence sensor is two or three, the quantity of zero sequence sensor is one.
3. three-phase zero sequence combined type current sensor device according to claim 1 is characterized in that said phase sequence sensor and zero sequence sensor are yi word pattern and distribute.
4. three-phase zero sequence combined type current sensor device according to claim 2 is characterized in that the middle centre distance of iron core (3) that said phase sequence sensor and zero sequence sensor are comprised is not less than 280mm.
5. three-phase zero sequence combined type current sensor device according to claim 1 is characterized in that said iron core (3) is annular or track shape structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220239805 CN202614828U (en) | 2012-05-25 | 2012-05-25 | Three-phase zero sequence combined type current sensing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220239805 CN202614828U (en) | 2012-05-25 | 2012-05-25 | Three-phase zero sequence combined type current sensing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202614828U true CN202614828U (en) | 2012-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220239805 Expired - Fee Related CN202614828U (en) | 2012-05-25 | 2012-05-25 | Three-phase zero sequence combined type current sensing device |
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| CN (1) | CN202614828U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108051621A (en) * | 2017-12-18 | 2018-05-18 | 中山市晓明电器实业有限公司 | A kind of composite ultraphonic ripple standing wave electric current and vector current collector |
| CN109142952A (en) * | 2018-08-16 | 2019-01-04 | 广东阿尔派智能电网有限公司 | A kind of current temperature accident indicator and control method |
-
2012
- 2012-05-25 CN CN 201220239805 patent/CN202614828U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108051621A (en) * | 2017-12-18 | 2018-05-18 | 中山市晓明电器实业有限公司 | A kind of composite ultraphonic ripple standing wave electric current and vector current collector |
| CN108051621B (en) * | 2017-12-18 | 2019-10-25 | 中山市晓明电器实业有限公司 | A kind of composite ultraphonic wave standing wave electric current and vector current collector |
| CN109142952A (en) * | 2018-08-16 | 2019-01-04 | 广东阿尔派智能电网有限公司 | A kind of current temperature accident indicator and control method |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121219 Termination date: 20200525 |