CN201876485U - Electronic transformer based on intelligent conditioning unit - Google Patents
Electronic transformer based on intelligent conditioning unit Download PDFInfo
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- CN201876485U CN201876485U CN2010206365887U CN201020636588U CN201876485U CN 201876485 U CN201876485 U CN 201876485U CN 2010206365887 U CN2010206365887 U CN 2010206365887U CN 201020636588 U CN201020636588 U CN 201020636588U CN 201876485 U CN201876485 U CN 201876485U
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Abstract
The utility model relates to an electronic transformer based on an intelligent conditioning unit, which comprises a sensor head, a protection measurement and control device, shielded cables and the intelligent conditioning unit. The sensor head and the protection measurement and control device are respectively connected with the intelligent conditioning unit through the shielded cables, the intelligent conditioning unit comprises a conditioning unit and an electric energy meter unit which are arranged on the same printed circuit board, the sensor head acquires voltage and current information and then sends the information to the intelligent conditioning unit through the shielded cable, after input signals are subjected to signal conditioning, integrator process and precision adjustment by the conditioning unit, and the conditioning unit outputs meter signals to the electric energy meter unit directly and outputs protection signals to the protection measurement and control device through the shielded cable. Integration of authentication of the electronic transformer and the electric energy meter is realized, and accordingly the electronic transformer has effective electricity stealing prevention function. Meanwhile, the output of the sensor head is directly connected to the intelligent conditioning unit and secondary connection is omitted, so that precision loss caused by U and I signal wire transmission can be reduced effectively and fault rate is also reduced.
Description
Technical field
The utility model relates to the electric mutual inductor based on intelligence conditioning unit.
Background technology
Can realize measurement based on the electric mutual inductor of Rogowski coil, make electric mutual inductor have advantages such as no magnetic saturation, response frequency wide ranges, precision height, transient characterisitics be good big electric current; It is by sensor head; shielded cable; on-the-spot conditioning unit; watt-hour meter and protection measure and control device are formed; sensor head detects A; B; C voltage in three phases current value; the transducing signal of gathering is sent to on-the-spot conditioning unit through small-signal private mask cable; on-the-spot conditioning unit carries out signal condition to the output signal of sensor head; Integral Processing and precision adjustment; output metering signal through shielded cable to watt-hour meter; the guard signal of output is delivered to the protection measure and control device by shielded cable; as shown in Figure 1, this electric mutual inductor has high-precision measuring technique; the design of hardware and software of high reliability; be simple and easy to use.
The conditioning unit of electric mutual inductor is installed in the switch cabinet instrument room, adopt unique transmission precision compensation model, make from sensing head, conditioning unit and all transmission cables and guaranteed in interior resultnat accuracy, the polarity of mutual inductor is changed, is overhauled and safeguards also very convenient simultaneously, but this electronic mutual inductor does not possess anti-stealing electricity function, the user can cause tremendous loss to power supply department by changing the metering result that multiple modes such as secondary side wiring change electric energy meter under the situation that does not influence loop power supply; On the other hand, because output back, conditioning unit directly connects the watt-hour meter of metering units, they all need authentication, have not only increased the hardware and software cost of electric mutual inductor, and the failure rate height.
The utility model content
The purpose of this utility model provides a kind of electric mutual inductor based on intelligence conditioning unit, does not possess anti-stealing electricity function to solve existing electric mutual inductor, and nurses one's health the caused cost height of two authentications of unit and metering units, the problem that failure rate is high.
For achieving the above object; electric mutual inductor based on intelligence conditioning unit of the present utility model; comprise sensor head; protection measure and control device and shielded cable; also comprise intelligence conditioning unit; described sensor head; the protection measure and control device links to each other with intelligence conditioning unit by shielded cable respectively; described intelligence conditioning unit comprises conditioning unit and the electric energy metrical unit of being located in the same printed board; the electric current and voltage information of described sensor head collection is sent to intelligence conditioning unit through shielded cable; conditioning unit in the intelligence conditioning unit carries out signal condition to input signal; after Integral Processing and precision are adjusted; the output metering signal is directly delivered to the electric energy metrical unit, and the guard signal of conditioning unit output causes described protection measure and control device outward by shielded cable.
Further, described sensor head is installed in the switch cubicle hyperbaric chamber, is passive.
Further, described sensor head detects A, B, C voltage in three phases current value, and built-in Rogowski coil carries out the electric current progress of disease, adopts resitstance voltage divider to carry out the voltage progress of disease.
Further, described shielded cable is the small-signal shielded cable.
Be provided with and be connected with in turn difference load module, low-pass filtering module, integral unit module, signal amplification module and output module in the conditioning unit in the described intelligence conditioning unit; described electric energy metrical unit comprises A/D module, computing module, metering output module and the LCD MODULE that connects in turn; output module in the described conditioning unit is exported guard signal, metering signal is imported the A/D module of electric energy metrical unit.
Further, described metering output module output is connected with 485 communication ports.
The intelligence conditioning unit of the electric mutual inductor based on intelligence conditioning unit of the present utility model is integrated conditioning unit and electric energy metrical unit, realize electric mutual inductor and electric energy meter China Metrology Accreditation integrated, have an effective anti-stealing electricity function, and intelligence conditioning unit is directly arrived in the output of sensor head, need not secondary connection, can effectively reduce the loss of accuracy that the transmission of U, I signal electric wire causes, reduce the fault probability simultaneously; And compact conformation when switch cubicle is used, economy system, application value is huge.
Description of drawings
Fig. 1 is existing electric mutual inductor application configuration synoptic diagram;
Fig. 2 is an electric mutual inductor application configuration synoptic diagram of the present utility model;
Fig. 3 is an intelligence conditioning of the present utility model unit theory diagram;
Fig. 4 is an intelligence conditioning cellular construction synoptic diagram of the present utility model.
Embodiment
Electric mutual inductor based on intelligence conditioning unit of the present utility model as shown in Figure 2; comprise sensor head; the protection measure and control device; shielded cable and intelligence conditioning unit; sensor head; the protection measure and control device links to each other with intelligence conditioning unit by shielded cable respectively; intelligence conditioning unit comprises conditioning unit and the electric energy metrical unit of being located in the same printed board; the electric current and voltage information of sensor head collection is sent to intelligence conditioning unit through shielded cable; conditioning unit in the intelligence conditioning unit carries out signal condition to input signal; after Integral Processing and precision are adjusted; the output metering signal is directly delivered to the electric energy metrical unit, and the guard signal of conditioning unit output causes described protection measure and control device outward by shielded cable.
Electric mutual inductor job step of the present utility model is as follows:
(1) sensor head detects A, B, C voltage in three phases current value, and built-in Rogowski coil carries out the electric current progress of disease, adopts resitstance voltage divider to carry out the voltage progress of disease, and measuring accuracy reaches 0.2 grade; Sensor head is installed in the switch cubicle hyperbaric chamber, is passive, need not the power supply power supply;
(2) transducing signal in hyperbaric chamber is sent to intelligence conditioning cell processing in the metering house through 3～10 meters small-signal private mask cable; Shielded cable is the small-signal shielded cable, this shielded cable has been considered the needs that electric current and voltage sensor head signal transmit respectively, emphasis has been considered the undesired signal screening ability to space electric field and space magnetic field simultaneously, satisfies electromagnetic compatibility requirement in the switch cubicle comprehensively.
As shown in Figure 3; provided intelligent conditioning unit theory diagram; be provided with difference load module, low-pass filtering module, integral unit module, signal amplification module and the output module that connects in turn in the conditioning unit in the intelligence conditioning unit; the electric energy metrical unit comprises A/D module, computing module, metering output module and the LCD MODULE that connects in turn; output module in the conditioning unit is exported guard signal; metering signal is imported the A/D module of electric energy metrical unit, and the output of metering output module is connected with 485 communication ports.Wherein the signal that will nurse one's health unit output of the A/D unit in the electric energy metrical unit carries out the A/D sampling, then the digital signal after the conversion is calculated, and obtains electric energy result of calculation at last, shows by the metering output module; Need carry out other processing to the result who obtains if the user has, also can carry out correspondence with foreign country by 485 communication ports.
(3) intelligence conditioning unit is installed in the switch cabinet instrument room, adopt and stand with 220 VDC(or 110 VDC) the power supply power supply, conditioning unit in the intelligence conditioning unit carries out signal condition, Integral Processing and precision adjustment to the output signal of sensor head, output meets the guard signal of G/B T 20840.7/8-2007 standard, wherein, metering signal does not go out device, can directly deliver to the electric energy metrical unit; Guard signal is given the protection measure and control device in the mode of simulation small-signal, and dynamic output impedance approaches 0 Europe, the loss of significance that the protection measuring and controlling equipment of having avoided back level to connect brings because input impedance is not enough.Transmission adopts aviation plug and private mask cable to improve anti-interference.Simultaneously, the standard metering signal to the output of conditioning part measures.
Fig. 4 is an intelligence conditioning cellular construction synoptic diagram; 1 is to the shielded cable adapter of protecting measure and control device; 2 for connecting the shielded cable adapter of sensing head; this intelligence conditioning cellular construction compactness; save switch cubicle instrument installing space, simultaneously, owing to saved shielded cable and the shielded cable adapter of expensive conditioning unit to metering outfit; reduce cost, saved man-hour.
This electric mutual inductor realized conditioning and electric energy meter China Metrology Accreditation integrated, have a natural anti-stealing electricity function; Simultaneously, electric mutual inductor output directly arrive intelligence and is nursed one's health the unit, need not secondary connection, can effectively reduce U, the I signal electric wire transmits the loss of accuracy who causes.
Claims (6)
1. electric mutual inductor based on intelligence conditioning unit; comprise sensor head; protection measure and control device and shielded cable; it is characterized in that: also comprise intelligence conditioning unit; described sensor head; the protection measure and control device links to each other with intelligence conditioning unit by shielded cable respectively; described intelligence conditioning unit comprises conditioning unit and the electric energy metrical unit of being located in the same printed board; the electric current and voltage information of described sensor head collection is sent to intelligence conditioning unit through shielded cable; conditioning unit in the intelligence conditioning unit carries out signal condition to input signal; after Integral Processing and precision are adjusted; the output metering signal is directly delivered to the electric energy metrical unit, and the guard signal of conditioning unit output causes described protection measure and control device outward by shielded cable.
2. the electric mutual inductor based on intelligence conditioning unit according to claim 1, it is characterized in that: described sensor head is installed in the switch cubicle hyperbaric chamber, is passive.
3. the electric mutual inductor based on intelligence conditioning unit according to claim 2, it is characterized in that: described sensor head detects A, B, C voltage in three phases current value, built-in Rogowski coil carries out the electric current progress of disease, adopts resitstance voltage divider to carry out the voltage progress of disease.
4. according to each described electric mutual inductor based on intelligence conditioning unit among the claim 1-3, it is characterized in that: described shielded cable is the small-signal shielded cable.
5. the electric mutual inductor based on intelligence conditioning unit according to claim 1; it is characterized in that: be provided with and be connected with in turn difference load module, low-pass filtering module, integral unit module, signal amplification module and output module in the conditioning unit in the described intelligence conditioning unit; described electric energy metrical unit comprises A/D module, computing module, metering output module and the LCD MODULE that connects in turn; output module in the described conditioning unit is exported guard signal, metering signal is imported the A/D module of electric energy metrical unit.
6. the electric mutual inductor based on intelligence conditioning unit according to claim 5 is characterized in that: described metering output module output is connected with 485 communication ports.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206365887U CN201876485U (en) | 2010-12-01 | 2010-12-01 | Electronic transformer based on intelligent conditioning unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206365887U CN201876485U (en) | 2010-12-01 | 2010-12-01 | Electronic transformer based on intelligent conditioning unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201876485U true CN201876485U (en) | 2011-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010206365887U Expired - Fee Related CN201876485U (en) | 2010-12-01 | 2010-12-01 | Electronic transformer based on intelligent conditioning unit |
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| CN (1) | CN201876485U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102998503A (en) * | 2012-11-16 | 2013-03-27 | 许继集团有限公司 | Mutual inductor electronic unit, electronic mutual inductor and replacing method of electronic unit |
| CN106526308A (en) * | 2016-07-01 | 2017-03-22 | 南京新联电力自动化有限公司 | 10kV distribution network high-voltage metering device based on electronic-type sensor |
| US11099214B2 (en) | 2017-05-17 | 2021-08-24 | 3M Innovative Properties Company | Sensors with discrete capacitors for high voltage separable connectors |
-
2010
- 2010-12-01 CN CN2010206365887U patent/CN201876485U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102998503A (en) * | 2012-11-16 | 2013-03-27 | 许继集团有限公司 | Mutual inductor electronic unit, electronic mutual inductor and replacing method of electronic unit |
| CN102998503B (en) * | 2012-11-16 | 2015-01-21 | 许继集团有限公司 | Mutual inductor electronic unit, electronic mutual inductor and replacing method of electronic unit |
| CN106526308A (en) * | 2016-07-01 | 2017-03-22 | 南京新联电力自动化有限公司 | 10kV distribution network high-voltage metering device based on electronic-type sensor |
| US11099214B2 (en) | 2017-05-17 | 2021-08-24 | 3M Innovative Properties Company | Sensors with discrete capacitors for high voltage separable connectors |
| US11525843B2 (en) | 2017-05-17 | 2022-12-13 | 3M Innovative Properties Company | Sensors with discrete capacitors for high voltage separable connectors |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20131129 Address after: No. 1298 Xuchang City, Henan province 461000 XJ Avenue Patentee after: Xuji Electric Co., Ltd. Patentee after: Xuchang Xuji Software Technology Co., Ltd. Address before: No. 1298 Xuchang City, Henan province 461000 XJ Avenue Patentee before: Xuji Group Co., Ltd. Patentee before: Xuji Electric Co., Ltd. Patentee before: Xuchang Xuji Software Technology Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110622 Termination date: 20191201 |
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| CF01 | Termination of patent right due to non-payment of annual fee |