CN204044216U - Electronic voltage transformer for digitalized power substation - Google Patents
Electronic voltage transformer for digitalized power substation Download PDFInfo
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- CN204044216U CN204044216U CN201420510124.XU CN201420510124U CN204044216U CN 204044216 U CN204044216 U CN 204044216U CN 201420510124 U CN201420510124 U CN 201420510124U CN 204044216 U CN204044216 U CN 204044216U
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- voltage
- arm
- voltage divider
- current transformer
- divider
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Abstract
The utility model discloses a kind of electronic voltage transformer for digitalized power substation, its high-voltage electric field shields, voltage divider high-voltage arm shields, voltage divider high-voltage arm, the shielding of voltage divider low-voltage arm is enclosed in the current transformer body of poured with epoxy resin one-tenth, high-voltage terminal is fixed on current transformer body upper end, high-voltage terminal lower end is fixedly connected with voltage divider high-voltage arm upper end, voltage divider high-voltage arm lower end is fixedly connected with the voltage divider low-voltage arm be arranged in current transformer body cavity and voltage collector are logical, voltage divider low-voltage arm is fixedly connected with the secondary output terminals being fixed on side, current transformer body lower end with voltage collector.The utility model secondary output voltage can change size; good linearity, bandwidth, measuring accuracy are high; be applicable to 10kV digital transformer substation complex automatic system; its small voltage signal exported can directly connect with instrument, protective relaying device, thus realizes metering, control, measurement and defencive function.
Description
Technical field
The utility model relates to a kind of electronic current mutual inductor, and especially a kind of electronic type voltage transformer for digital transformer substation, belongs to electrical equipment technical field.
Background technology
Mutual inductor is for the equipment measured and protect in electric system; high-voltage variable in high-pressure system can be changed into normal low voltage small-signal by voltage transformer (VT); supply measurement instrument and relay; the high pressure of measurement instrument, protective relaying device and system is separated; electric system and equipment are carried out to metering, the measurement and overvoltage protection etc. of voltage, to ensure the safety of operating personnel and equipment.
Along with the needs that development and the intelligent grid of digital transformer substation are built; the relay protection of electric system industrial computer and electronic instrument progressively occupy leading position; in relay protection with in measuring; due to energy flow and the separate from information flow of control section; monitoring equipment no longer needs the mutual inductor of high-power output; therefore, research and development have measurement, low energy consumption Novel electronic voltage transformer is the problem that electric power support equipment enterprise faces.
Utility model content
It is little that the purpose of this utility model is to provide a kind of volume, lightweight, precision is high, good linearity, bandwidth for electronic voltage transformer for digitalized power substation.
The utility model is achieved by the following technical programs:
A kind of electronic voltage transformer for digitalized power substation, comprise current transformer body, high-voltage terminal, high-voltage electric field shields, voltage divider high-voltage arm shields, voltage divider high-voltage arm, voltage divider low-voltage arm shields, voltage divider low-voltage arm and voltage collector, secondary output terminals and mounting base, described high-voltage electric field shielding, voltage divider high-voltage arm shields, voltage divider high-voltage arm, the shielding of voltage divider low-voltage arm is enclosed in the current transformer body of poured with epoxy resin one-tenth, high-voltage terminal is fixed on current transformer body upper end, high-voltage terminal lower end is fixedly connected with the voltage divider high-voltage arm upper end be vertically fixed in current transformer body, voltage divider high-voltage arm lower end is fixedly connected with by twisted-pair shielded wire with voltage collector with the voltage divider low-voltage arm be arranged in current transformer body cavity, voltage divider low-voltage arm and voltage collector are also fixedly connected with the secondary output terminals being fixed on side, current transformer body lower end by twisted-pair shielded wire, and mounting base is fixed on the downside of current transformer body.
The purpose of this utility model can also be realized further by following technical measures.
Aforesaid electronic voltage transformer for digitalized power substation, wherein high-voltage electric field shielding is fixed on the downside of high-voltage terminal and between voltage divider high-voltage arm upper end.
Aforesaid electronic voltage transformer for digitalized power substation, be wherein fixed on high-voltage electric field shielding downside in being inverted columnar voltage divider high-voltage arm shielding upper end, the shielding of voltage divider high-voltage arm covers voltage divider high-voltage arm.
Aforesaid electronic voltage transformer for digitalized power substation, between wherein the shielding of voltage divider low-voltage arm is fixed on the upside of voltage divider high-voltage arm lower end and voltage divider low-voltage arm and voltage collector.
Aforesaid electronic voltage transformer for digitalized power substation, wherein high-voltage electric field shielding and the shielding of voltage divider low-voltage arm all adopt brass screen to make.
The utility model precision is high, good linearity, bandwidth, is applicable to 10kV digital transformer substation complex automatic system, and its small voltage signal exported can directly connect with instrument, protective relaying device, thus realizes metering, control, measurement and defencive function.Its volume is little, lightweight, and can not produce ferroresonance, measuring accuracy is high, and the frequency band overcoming electromagnetic potential transformer is narrow, the shortcomings such as low-response.Mutual inductor high heat can not be produced during the utility model second short circuit, burn explosion phenomenon, fundamentally eliminate the significant trouble hidden danger in Operation of Electric Systems, farthest the safety of support personnel and equipment.To the transformation of existing Substation Electric Equipment and the construction of digital transformer substation, there is realistic meaning.
Advantage and disadvantage of the present utility model, by for illustration and explanation for the non-limitative illustration passing through preferred embodiment below, these embodiments, only provide as an example with reference to accompanying drawing.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
As shown in Figure 1, the present embodiment is used for 10kV digital transformer substation, comprise current transformer body 1, high-voltage terminal 2, high-voltage electric field shielding 3, voltage divider high-voltage arm shielding 4, voltage divider high-voltage arm 5, voltage divider low-voltage arm shielding 6, voltage divider low-voltage arm and voltage collector 7, secondary output terminals 8 and mounting base 9, high-voltage electric field shielding 3, voltage divider high-voltage arm shielding 4, voltage divider high-voltage arm 5, voltage divider low-voltage arm shielding 6 are enclosed in the current transformer body 1 that poured with epoxy resin becomes.High-voltage terminal 2 is fixed on current transformer body 1 upper end, its lower end is fixedly connected with voltage divider high-voltage arm 5 upper end be vertically fixed in current transformer body 1, voltage divider high-voltage arm 5 lower end is fixedly connected with by twisted-pair shielded wire 10 with voltage collector 7 with the voltage divider low-voltage arm be arranged in current transformer body cavity, and voltage divider low-voltage arm and voltage collector 7 adopt silica gel 20 to seal and be fixed in current transformer body cavity 11.Voltage divider low-voltage arm and voltage collector 7 are also fixedly connected with the secondary output terminals 8 be fixed on the left of current transformer body lower end by twisted-pair shielded wire 10, and mounting base 9 is fixed on the downside of current transformer body 1 by several trip bolt.
High-voltage electric field shielding 3 and voltage divider low-voltage arm shielding 6 all adopt the good brass screen of shield effectiveness to make.High-voltage electric field shielding 3 be fixed on the downside of high-voltage terminal 2 and voltage divider high-voltage arm shielding 4 on the upside of between.Voltage divider high-voltage arm shielding 4 is in being inverted cylindrical shape, its upper end is fixed on the downside of high-voltage electric field shielding 3, and covering voltage divider high-voltage arm 5, the effect shielding external undesired signal is played in voltage divider high-voltage arm shielding 4, and voltage divider high-voltage arm 5 is also equivalent to a resistance.Between voltage divider low-voltage arm shielding 6 is fixed on the upside of voltage divider high-voltage arm 5 lower end and voltage divider low-voltage arm and voltage collector 7.
The utility model meets Q/GDW 425-2010-electronic type voltage transformer technical manual and GB/T20840.8-2007 " electronic type voltage transformer " standard; can directly and instrument; protective relaying device connects; directly supporting with 10kV digital transformer substation complex automatic system; thus realize metering; control, measure, the function of protection.All signals are transmitted by twisted-pair shielded wire 20, are conducive to the ability strengthening electromagnetism interference.
In addition to the implementation, the utility model can also have other embodiments, and all employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection domain of the utility model requirement.
Claims (5)
1. an electronic voltage transformer for digitalized power substation, is characterized in that: comprise current transformer body,
High-voltage terminal, high-voltage electric field shields, voltage divider high-voltage arm shields, voltage divider high-voltage arm, voltage divider low-voltage arm shields, voltage divider low-voltage arm and voltage collector, secondary output terminals and mounting base, described high-voltage electric field shielding, voltage divider high-voltage arm shields, voltage divider high-voltage arm, the shielding of voltage divider low-voltage arm is enclosed in the current transformer body of poured with epoxy resin one-tenth, high-voltage terminal is fixed on current transformer body upper end, high-voltage terminal lower end is fixedly connected with the voltage divider high-voltage arm upper end be vertically fixed in current transformer body, voltage divider high-voltage arm lower end is fixedly connected with by twisted-pair shielded wire with voltage collector with the voltage divider low-voltage arm be arranged in current transformer body cavity, voltage divider low-voltage arm and voltage collector are also fixedly connected with the secondary output terminals being fixed on side, current transformer body lower end by twisted-pair shielded wire, and mounting base is fixed on the downside of current transformer body.
2. electronic voltage transformer for digitalized power substation as claimed in claim 1, is characterized in that: high-voltage electric field shielding is fixed on the downside of high-voltage terminal and between voltage divider high-voltage arm upper end.
3. electronic voltage transformer for digitalized power substation as claimed in claim 1, it is characterized in that: be fixed on high-voltage electric field shielding downside in being inverted columnar voltage divider high-voltage arm shielding upper end, the shielding of voltage divider high-voltage arm covers voltage divider high-voltage arm.
4. electronic voltage transformer for digitalized power substation as claimed in claim 1, is characterized in that: between the shielding of voltage divider low-voltage arm is fixed on the upside of voltage divider high-voltage arm lower end and voltage divider low-voltage arm and voltage collector.
5. the electronic voltage transformer for digitalized power substation as described in claim 2 or 4, is characterized in that: high-voltage electric field shielding and the shielding of voltage divider low-voltage arm all adopt brass screen to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420510124.XU CN204044216U (en) | 2014-09-05 | 2014-09-05 | Electronic voltage transformer for digitalized power substation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420510124.XU CN204044216U (en) | 2014-09-05 | 2014-09-05 | Electronic voltage transformer for digitalized power substation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204044216U true CN204044216U (en) | 2014-12-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420510124.XU Expired - Fee Related CN204044216U (en) | 2014-09-05 | 2014-09-05 | Electronic voltage transformer for digitalized power substation |
Country Status (1)
| Country | Link |
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| CN (1) | CN204044216U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107134355A (en) * | 2017-05-25 | 2017-09-05 | 浙江天际互感器有限公司 | A kind of electronic type voltage transformer of compound inslation |
-
2014
- 2014-09-05 CN CN201420510124.XU patent/CN204044216U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107134355A (en) * | 2017-05-25 | 2017-09-05 | 浙江天际互感器有限公司 | A kind of electronic type voltage transformer of compound inslation |
| CN107134355B (en) * | 2017-05-25 | 2018-12-21 | 浙江天际互感器有限公司 | A kind of electronic type voltage transformer of compound inslation |
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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: 20141224 Termination date: 20190905 |
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| CF01 | Termination of patent right due to non-payment of annual fee |