CN204028191U - A kind of electric current and voltage integration mutual inductor - Google Patents
A kind of electric current and voltage integration mutual inductor Download PDFInfo
- Publication number
- CN204028191U CN204028191U CN201420347964.9U CN201420347964U CN204028191U CN 204028191 U CN204028191 U CN 204028191U CN 201420347964 U CN201420347964 U CN 201420347964U CN 204028191 U CN204028191 U CN 204028191U
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Abstract
A kind of electric current and voltage integration mutual inductor, comprise and installing and the current transformer on bus, full-wave rectifier filter circuit, voltage stabilizing and voltage-regulating circuit, voltage and current metering circuit, Optical Fiber Transmission interface circuit, described voltage and current metering circuit is connected with current mutual inductor coil, for measuring electric current, it is characterized in that: described full-wave rectifier filter circuit is also connected with isolating transformer, isolating transformer connects high pressure and gets energy voltage divider, it is in parallel that measurement voltage divider and high pressure get energy voltage divider, measures voltage divider and be connected with voltage stabilizing and voltage-regulating circuit.The design proposes a kind of integrated electric formula voltage current transformer based on existing capacitance type potential transformer.Can measure bus current and voltage simultaneously, simplify the original voltage of electric system, current measurement scheme, reduce costs, simplify system wiring topology.
Description
Technical field
The design relates to electric current and voltage integration mutual inductor, belongs to technical field of electric power.
Background technology
Electronic current mutual inductor is mainly in order to the Insulation Problems solved between the high-low pressure in original electromagnetic current transducer is suggested.Therefore, the research of related electronic formula mutual inductor for a long time also just mainly concentrates on electronic current mutual inductor, research for electronic type voltage transformer will be lacked a lot relatively, here main cause is voltage transformer (VT), the voltage transformer (VT) that particularly electric pressure is higher almost have employed capacitance type potential transformer bar none, be called for short CVT, and there is not Insulation Problems serious like that in image current mutual inductor in CVT.Due to, voltage and current in electric system is nearly all the amount that will simultaneously measure, seldom there is the situation only measuring electric current and non-measuring voltage, therefore, if mutual inductor can complete the measurement to electric current and voltage simultaneously, the original voltage of electric system, current measurement scheme can be simplified undoubtedly, reduce costs, simplify system wiring topology.
Summary of the invention
Based on above-mentioned purpose, propose and a kind ofly can carry out voltage, current measurement simultaneously, measure portion is positioned at the integrated electric formula high-voltage mutual inductor of high-pressure side.Original CVT and and that formed a kind of integrated electric formula high-voltage mutual inductor integrated based on the electronic current mutual inductor of Rogowski coil measuring principle.
For achieving the above object, the design is realized by following technological means:
A kind of electric current and voltage integration mutual inductor, comprise the Rogowski coil be installed on bus, full-wave rectifier filter circuit, voltage stabilizing and voltage-regulating circuit, voltage and current metering circuit, Optical Fiber Transmission interface circuit, described voltage and current metering circuit is connected with Rogowski coil, for measuring electric current, it is characterized in that: described full-wave rectifier filter circuit is also connected with isolating transformer, isolating transformer connects high pressure and gets energy voltage divider, it is in parallel that measurement voltage divider and high pressure get energy voltage divider, measures voltage divider and be connected with voltage stabilizing and voltage-regulating circuit.
Preferred:
Described a kind of electric current and voltage integration mutual inductor, is characterized in that: described measurement voltage divider, measurement voltage divider are made up of the high-voltage capacitance mutual inductor of two series connection respectively.
Described a kind of electric current and voltage integration mutual inductor, is characterized in that: the electric energy of described measurement voltage divider obtains from system busbar voltage-to-ground.
Described a kind of electric current and voltage integration mutual inductor, is characterized in that: described busbar voltage is 220kV.
Described a kind of electric current and voltage integration mutual inductor, is characterized in that: described bus mains frequency is 49.5-50.5Hz.
Described a kind of electric current and voltage integration mutual inductor, it is characterized in that: the power taking voltage that described high pressure gets energy voltage divider is 4kV, the power taking voltage that pressure gets energy voltage divider is test under the condition of 4kV,
The invention has the beneficial effects as follows: the design proposes a kind of integrated electric formula voltage current transformer based on existing capacitance type potential transformer.Can measure bus current and voltage simultaneously, simplify the original voltage of electric system, current measurement scheme, reduce costs, simplify system wiring topology.
Accompanying drawing explanation
Fig. 1 is the concrete implementing circuit composition diagram of the utility model.
Embodiment
Below in conjunction with Figure of description, design is further described.
As shown in Figure 1, current signal is extracted by Rogowski coil, voltage signal extracts by measuring voltage divider, and the supply voltage of whole measure portion is got can be obtained from system busbar voltage-to-ground with capacitive divider by a high pressure, being formed after isolating transformer, full-wave rectifier filter circuit and voltage stabilizing and voltage-regulating circuit can for the direct supply of whole measure portion.Because supply voltage derives from metastable Bus Voltage, therefore, he can not by the impact of the factors such as load current.
The design is with system voltage 220 kV, and bus mains frequency is 49.5-50.5Hz, and amplitude error and phase error meet measures requirement.
More than show and describe the ultimate principle of the design, principal character and advantage.The technician of the industry should understand; the design is not restricted to the described embodiments; the principle that the design is just described described in above-described embodiment and instructions; under the prerequisite not departing from the design's spirit and scope; the design also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the design.The claimed scope of the design is defined by appending claims and equivalent thereof.
Claims (6)
1. an electric current and voltage integration mutual inductor, comprise Rogowski coil, full-wave rectifier filter circuit, voltage stabilizing and voltage-regulating circuit, voltage and current metering circuit, Optical Fiber Transmission interface circuit, described voltage and current metering circuit is connected with Rogowski coil, for measuring electric current, it is characterized in that: described full-wave rectifier filter circuit is also connected with isolating transformer, isolating transformer connects high pressure and gets energy voltage divider, it is in parallel that measurement voltage divider and high pressure get energy voltage divider, measures voltage divider and be connected with voltage stabilizing and voltage-regulating circuit.
2. a kind of electric current and voltage integration mutual inductor as claimed in claim 1, is characterized in that: described measurement voltage divider, measurement voltage divider are made up of the high-voltage capacitance mutual inductor of two series connection respectively.
3. a kind of electric current and voltage integration mutual inductor as claimed in claim 2, is characterized in that: the electric energy of described measurement voltage divider obtains from system busbar voltage-to-ground.
4. a kind of electric current and voltage integration mutual inductor as claimed in claim 1, is characterized in that: described busbar voltage is 220kV.
5. a kind of electric current and voltage integration mutual inductor as claimed in claim 1, is characterized in that: described bus mains frequency is 49.5-50.5Hz.
6. a kind of electric current and voltage integration mutual inductor as claimed in claim 1, is characterized in that: the power taking voltage that described high pressure gets energy voltage divider is 4kV.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420347964.9U CN204028191U (en) | 2014-06-27 | 2014-06-27 | A kind of electric current and voltage integration mutual inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420347964.9U CN204028191U (en) | 2014-06-27 | 2014-06-27 | A kind of electric current and voltage integration mutual inductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204028191U true CN204028191U (en) | 2014-12-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420347964.9U Expired - Fee Related CN204028191U (en) | 2014-06-27 | 2014-06-27 | A kind of electric current and voltage integration mutual inductor |
Country Status (1)
| Country | Link |
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| CN (1) | CN204028191U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107576836A (en) * | 2017-10-18 | 2018-01-12 | 叶有福 | Comprehensive sensor |
-
2014
- 2014-06-27 CN CN201420347964.9U patent/CN204028191U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107576836A (en) * | 2017-10-18 | 2018-01-12 | 叶有福 | Comprehensive sensor |
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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: 20141217 Termination date: 20150627 |
|
| EXPY | Termination of patent right or utility model |