CN107833736B - Combined high-voltage current transformer - Google Patents
Combined high-voltage current transformer Download PDFInfo
- Publication number
- CN107833736B CN107833736B CN201711117114.4A CN201711117114A CN107833736B CN 107833736 B CN107833736 B CN 107833736B CN 201711117114 A CN201711117114 A CN 201711117114A CN 107833736 B CN107833736 B CN 107833736B
- Authority
- CN
- China
- Prior art keywords
- current transformer
- primary
- temperature sensor
- transformer body
- static contact
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 230000003068 static effect Effects 0.000 claims description 33
- 238000009434 installation Methods 0.000 claims description 24
- 239000003822 epoxy resin Substances 0.000 claims description 5
- 229920000647 polyepoxide Polymers 0.000 claims description 5
- 239000004593 Epoxy Substances 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 238000005266 casting Methods 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/29—Terminals; Tapping arrangements for signal inductances
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
- H01F38/22—Instruments transformers for single phase ac
- H01F38/28—Current transformers
- H01F38/30—Constructions
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
- H01F2027/406—Temperature sensor or protection
Abstract
The invention discloses a combined high-voltage current transformer. Specifically, the combined high-voltage current transformer comprises: the primary contact assembly, the current transformer body, the base, the primary outlet terminal, the secondary outlet terminal and the temperature sensor are integrated into a whole, so that the operation safety of the high-voltage current transformer is improved, and the safe operation level of the high-voltage switch cabinet is even improved.
Description
Technical Field
The invention relates to the field of high-voltage power transmission and distribution equipment, in particular to a combined high-voltage current transformer.
Background
In high voltage supply lines, the current voltage is relatively high, as is very dangerous in direct measurement. In order to facilitate the secondary instrument measurement to be converted into a relatively uniform current and voltage, a transformer is used for playing roles in variable-current transformation and electrical isolation. The transformer is also called as an instrument transformer, and is a generic term of a current transformer and a voltage transformer. Can change high voltage into low voltage and large current into small current for measuring or protecting system. The function of the device is mainly to convert high voltage or large current into standard low voltage (100V) or standard small current (5A or 1A, respectively, nominal value) proportionally so as to realize standardization and miniaturization of measuring instruments, protecting equipment and automatic control equipment. Meanwhile, the mutual inductor can be used for separating a high-voltage system so as to ensure the safety of personnel and equipment.
The transformer for electric power system is a special transformer for transmitting the information of high voltage and large current of electric network to metering and measuring instrument and relay protection and automatic device on secondary side of low voltage and small current, and is a connecting element of primary system and secondary system, its primary winding is connected into electric network, and secondary winding is respectively connected with measuring instrument and protecting device. The mutual inductor is matched with the measuring instrument and the metering device, so that the voltage, the current and the electric energy of the primary system can be measured; the electric protection and automatic control for various faults of the power grid can be formed by matching with relay protection and automatic devices.
In the primary circuit structure setting of the high-voltage switch cabinet, the primary contact box and the high-voltage current transformer are independent devices respectively, hidden dangers such as looseness or poor contact and the like inevitably occur in the operation process, the high-voltage current transformer is seriously influenced, and even the reliable operation of the whole high-voltage switch cabinet is seriously influenced, moreover, the actual operation conditions of the primary contact box and the high-voltage current transformer cannot be timely measured and mastered in the daily operation of the high-voltage contact box, and certain potential safety hazards exist.
Disclosure of Invention
The invention aims to improve the operation safety of a high-voltage current transformer and provides a combined transformer.
In order to achieve the above object, the present invention provides the following solutions:
the combined high-voltage current transformer comprises a primary contact assembly, a current transformer body, a base, a primary outlet terminal, a secondary outlet terminal and a temperature sensor;
the current input end of the primary coil of the current transformer body is connected with the primary contact assembly, and the current output end of the primary coil of the current transformer body is connected with the primary outlet terminal; the secondary coil output end of the current transformer body is connected with the secondary outlet terminal;
the base is arranged at the lower parts of the current transformer body and the primary contact assembly, and the secondary outlet terminal is arranged on the base;
the primary contact assembly, the current transformer body, the base, the primary outlet terminal and the secondary outlet terminal form an epoxy casting whole;
the base is provided with an installation space, and the temperature sensor is arranged in the installation space.
Optionally, the current transformer body includes primary coil and secondary coil and high voltage insulation layer, the secondary coil set up in the outside of primary coil, high voltage insulation layer set up in primary coil with between the secondary coil.
Optionally, the primary contact assembly includes a static contact box, a static contact mounting seat and a static contact, the static contact box and the static contact mounting seat are all fixed on the current transformer body, and the static contact mounting seat is connected with the input end of the primary coil of the current transformer body, the static contact is arranged on the static contact mounting seat and is connected with the static contact mounting seat, and the static contact box is sleeved outside the static contact mounting seat.
Optionally, the installation space arranged in the base comprises a first installation space and a second installation space, and the first installation space is in contact with the fixed contact box; the second installation space is in contact with the current transformer body; the temperature sensor comprises a first temperature sensor and a second temperature sensor, wherein the first temperature sensor is arranged in the first installation space and used for measuring the temperature in the fixed contact box, and the second temperature sensor is arranged in the second installation space and used for measuring the temperature of the secondary coil of the current transformer body.
Optionally, an epoxy resin insulating layer is arranged between the first temperature sensor and the fixed contact box; an epoxy resin insulating layer is arranged between the second temperature sensor and the current transformer body. Optionally, the primary outlet terminal is a rectangular copper bar.
Optionally, the temperature sensor is a passive wireless temperature sensor, and the passive wireless temperature sensor is used for detecting a temperature signal and transmitting the temperature signal in a passive wireless mode.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
the invention discloses a combined high-voltage current transformer, which integrates a primary contact assembly and a current transformer body into a whole, so that looseness of the high-voltage current transformer and a contact box in the operation process is avoided, and meanwhile, a temperature sensor is arranged to detect the operation condition of the primary contact assembly and the current transformer body, so that the reliability and the safety of the operation of the high-voltage current transformer are ensured, the operation safety of the current transformer is improved, and the safety operation level of a high-voltage switch cabinet is further improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention, the drawings required for the embodiments will be briefly described. It is obvious that the drawing described below is only one embodiment of the invention, and that other drawings may be obtained from this drawing without inventive effort for a person skilled in the art.
Fig. 1 is a left side view of a combined high-voltage current transformer provided by the invention;
fig. 2 is a front view of a combined high-voltage current transformer provided by the invention.
Detailed Description
The invention aims to provide a combined high-voltage current transformer so as to improve the operation safety of the high-voltage current transformer.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
As shown in fig. 1 and 2, the present invention provides a combined high-voltage current transformer, which includes a primary contact assembly 1, a current transformer body 2, a base 3, a primary outlet terminal 4, a secondary outlet terminal 5, and a temperature sensor 6;
the current input end of the primary coil of the current transformer body 2 is connected with the primary contact assembly 1, and the current output end of the primary coil of the current transformer body 2 is connected with the primary outlet terminal 4; the output end of the secondary coil of the current transformer body 2 is connected with the secondary outlet terminal 5;
the base 3 is arranged at the lower parts of the current transformer body 2 and the primary contact assembly 1, and the secondary outlet terminal 5 is arranged on the base;
the primary contact assembly 1, the current transformer body 2, the base 3, the primary outgoing line terminal 4 and the secondary outgoing line terminal 5 form an epoxy casting whole;
the base 3 is provided with an installation space, and the temperature sensor 6 is arranged in the installation space.
Optionally, the current transformer body 2 includes a primary coil, a secondary coil and a high-voltage insulating layer, the secondary coil is disposed on the outer side of the primary coil, and the high-voltage insulating layer is disposed between the primary coil and the secondary coil.
Optionally, the primary contact assembly 1 includes a static contact box 11, a static contact mounting seat 12 and a static contact 13, the static contact box 11 and the static contact mounting seat 12 are both fixed on the current transformer body 2, the static contact mounting seat 12 is connected with a current input end of a primary coil of the current transformer body 2, the static contact 13 is arranged on the static contact mounting seat and connected with the static contact mounting seat 12, and the static contact box 11 is sleeved outside the static contact mounting seat 12.
Optionally, the installation space arranged in the base 3 comprises a first installation space and a second installation space, and the first installation space is in contact with the fixed contact box; the second installation space is in contact with the current transformer body; the temperature sensor 6 comprises a first temperature sensor and a second temperature sensor, wherein the first temperature sensor is arranged in the first installation space and used for measuring the temperature in the fixed contact box, and the second temperature sensor is arranged in the second installation space and used for measuring the temperature of the secondary coil of the current transformer body.
Optionally, an epoxy resin insulating layer is arranged between the first temperature sensor and the fixed contact box; an epoxy resin insulating layer is arranged between the second temperature sensor and the current transformer body.
Optionally, the primary outlet terminal is a rectangular copper bar.
Optionally, the temperature sensor 6 is a passive wireless temperature sensor, and the passive wireless temperature sensor is used for detecting a temperature signal and transmitting the temperature signal in a passive wireless manner.
Alternatively, as shown in fig. 2, when the current transformer body 2 includes two sets of secondary coils, two sets of secondary outlet terminals 5, that is, 4 secondary outlet terminals are included.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
the invention discloses a combined high-voltage current transformer, which integrates a primary contact assembly and a current transformer body into a whole, avoids loosening of a high-voltage current transformer and a contact box in the operation process, saves the space of an internal installation area of a high-voltage switch cabinet, simultaneously sets a temperature sensor to detect the operation condition of the primary contact assembly and the current transformer body, ensures the reliability and the safety of the operation of the high-voltage current transformer, improves the operation safety of the current transformer, and further improves the safe operation level of the high-voltage switch cabinet.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The technical principles and embodiments are explained herein by specific examples, the above examples are only for helping to understand the technical method and core idea of the present invention, and the described examples are only examples of the present invention, but not all examples. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, are intended to fall within the scope of the present invention.
Claims (5)
1. The combined high-voltage current transformer is characterized by comprising a primary contact assembly, a current transformer body, a base, a primary outgoing terminal, a secondary outgoing terminal and a temperature sensor;
the current input end of the primary coil of the current transformer body is connected with the primary contact assembly, and the current output end of the primary coil of the current transformer body is connected with the primary outlet terminal; the secondary coil output end of the current transformer body is connected with the secondary outlet terminal;
the base is arranged at the lower parts of the current transformer body and the primary contact assembly, and the secondary outlet terminal is arranged on the base;
the primary contact assembly, the current transformer body, the base, the primary outlet terminal and the secondary outlet terminal form an epoxy casting whole;
the base is provided with an installation space, and the temperature sensor is arranged in the installation space;
the primary contact assembly comprises a static contact box, a static contact mounting seat and a static contact, wherein the static contact box and the static contact mounting seat are both fixed on the current transformer body, the static contact mounting seat is connected with the input end of a primary coil of the current transformer body, the static contact is arranged on the static contact mounting seat and connected with the static contact mounting seat, and the static contact box is sleeved outside the static contact mounting seat;
the mounting space arranged in the base comprises a first mounting space and a second mounting space, and the first mounting space is in contact arrangement with the fixed contact box; the second installation space is in contact with the current transformer body; the temperature sensor comprises a first temperature sensor and a second temperature sensor, wherein the first temperature sensor is arranged in the first installation space and used for measuring the temperature in the fixed contact box, and the second temperature sensor is arranged in the second installation space and used for measuring the temperature of the secondary coil of the current transformer body.
2. The combination high-voltage current transformer according to claim 1, wherein the current transformer body comprises a primary coil and a secondary coil, the secondary coil being disposed outside the primary coil, and a high-voltage insulation layer being disposed between the primary coil and the secondary coil.
3. The combined high-voltage current transformer according to claim 1, wherein an epoxy insulating layer is provided between the first temperature sensor and the stationary contact box; an epoxy resin insulating layer is arranged between the second temperature sensor and the current transformer body.
4. The combination high voltage current transformer of claim 1 wherein the primary wire outlet terminal is a rectangular copper bar.
5. The combined high-voltage current transformer according to claim 1, wherein the temperature sensor is a passive wireless temperature sensor, and the passive wireless temperature sensor is configured to detect a temperature signal and transmit the temperature signal in a passive wireless manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711117114.4A CN107833736B (en) | 2017-11-13 | 2017-11-13 | Combined high-voltage current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711117114.4A CN107833736B (en) | 2017-11-13 | 2017-11-13 | Combined high-voltage current transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107833736A CN107833736A (en) | 2018-03-23 |
| CN107833736B true CN107833736B (en) | 2024-01-23 |
Family
ID=61654383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711117114.4A Active CN107833736B (en) | 2017-11-13 | 2017-11-13 | Combined high-voltage current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107833736B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102592814A (en) * | 2011-01-12 | 2012-07-18 | 宁夏力成电气集团有限公司 | T-shaped 10kV full working condition all insulation high voltage contact box current transformer |
| CN105092063A (en) * | 2015-09-16 | 2015-11-25 | 成都比善科技开发有限公司 | Switch cabinet temperature measurement warning system |
| CN205004161U (en) * | 2015-09-17 | 2016-01-27 | 孙振民 | Take integrated current transformer of contact box modularization |
| CN206003620U (en) * | 2016-08-31 | 2017-03-08 | 华仪电气股份有限公司 | A kind of contact box current transformer |
| CN106601457A (en) * | 2017-01-24 | 2017-04-26 | 北京合锐赛尔电力科技股份有限公司 | Current transformer with temperature measuring device |
| CN207353063U (en) * | 2017-11-13 | 2018-05-11 | 上海基胜能源股份有限公司 | A kind of Combined high-voltage current transformer |
-
2017
- 2017-11-13 CN CN201711117114.4A patent/CN107833736B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102592814A (en) * | 2011-01-12 | 2012-07-18 | 宁夏力成电气集团有限公司 | T-shaped 10kV full working condition all insulation high voltage contact box current transformer |
| CN105092063A (en) * | 2015-09-16 | 2015-11-25 | 成都比善科技开发有限公司 | Switch cabinet temperature measurement warning system |
| CN205004161U (en) * | 2015-09-17 | 2016-01-27 | 孙振民 | Take integrated current transformer of contact box modularization |
| CN206003620U (en) * | 2016-08-31 | 2017-03-08 | 华仪电气股份有限公司 | A kind of contact box current transformer |
| CN106601457A (en) * | 2017-01-24 | 2017-04-26 | 北京合锐赛尔电力科技股份有限公司 | Current transformer with temperature measuring device |
| CN207353063U (en) * | 2017-11-13 | 2018-05-11 | 上海基胜能源股份有限公司 | A kind of Combined high-voltage current transformer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107833736A (en) | 2018-03-23 |
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