CN203966808U - Distribution transformer - Google Patents
Distribution transformer Download PDFInfo
- Publication number
- CN203966808U CN203966808U CN201420371044.0U CN201420371044U CN203966808U CN 203966808 U CN203966808 U CN 203966808U CN 201420371044 U CN201420371044 U CN 201420371044U CN 203966808 U CN203966808 U CN 203966808U
- Authority
- CN
- China
- Prior art keywords
- transformer
- secondary current
- metering module
- current instrument
- instrument transformer
- 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.)
- Expired - Lifetime
Links
- 239000002184 metal Substances 0.000 claims abstract description 3
- 230000001681 protective effect Effects 0.000 claims description 6
- 230000005611 electricity Effects 0.000 abstract description 9
- 230000002265 prevention Effects 0.000 abstract description 7
- 239000002828 fuel tank Substances 0.000 abstract description 3
- 238000002955 isolation Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000007257 malfunction Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- Housings And Mounting Of Transformers (AREA)
Abstract
The utility model is a kind of distribution transformer, its structure comprises transformer body, transformer body side arranges casing, the in-built metering module of casing, transformer low voltage conduit connection column end dress secondary current instrument transformer, metering module and current transformer connecting line are arranged in metal sleeve, and transformer is provided with metering module, and secondary current instrument transformer is arranged on the end of the outer low-tension bushing binding post of oil tank of transformer.The beneficial effects of the utility model are: on transformer and the integrated basis of metering module, realized physical isolation and two kinds of anti-electricity-theft modes based on the comparison of power supply data, ensured effectively prevention and detect electricity filching behavior.And secondary current instrument transformer is arranged on fuel tank outside, is convenient to power supply department and changes in the time of mulual inductor malfunction.
Description
Technical field
The utility model relates to a kind of distribution transformer, belong to electrical network field.
Background technology
At present, transformer electricity theft prevention has two kinds of methods conventionally.One is to adopt physically-isolated mode, and one is relatively to determine whether to occur stealing based on power supply data.The existing Anti-steal electric transformer in market is the simple a kind of wherein method that adopts only.For example, in the Chinese patent literature that is CN202585053U, disclose a kind of Anti-steal electric transformer in the patent No., on transformer sidewall, be provided with distribution box, outlet terminal is placed in distribution box, eliminates the possibility of stealing personnel wiretapping.On transformer sidewall, the general transformer radiator of installing, installs after distribution box, and the heat-sinking capability of transformer reduces, and need to fall to hold to use.Again for example, in the Chinese patent literature that is CN201110314117 in the patent No., a kind of electricity anti-theft method and system of distribution transformer are disclosed, based on transformer once with the power supply data of secondary, especially electric current, based on the comparison of power supply data, determines whether to occur stealing, take measures to can calculate, reduce loss.This is one corrective action afterwards, can not prevent the generation of electricity filching behavior, and monitoring transformer primary current needs installation high-voltage current transformer, and cost compare is high.
Summary of the invention
The utility model proposes a kind of distribution transformer, its objective is and overcome the existing defect of prior art, can effectively prevent and detect electricity filching behavior, cost low performance is reliable.
Technical solution of the present utility model: distribution transformer, its structure comprises transformer body, transformer body side arranges casing, the in-built metering module of casing, transformer low voltage conduit connection column end dress secondary current instrument transformer, metering module and current transformer connecting line are arranged in metal sleeve, and transformer is provided with metering module, and secondary current instrument transformer is arranged on the end of the outer low-tension bushing binding post of oil tank of transformer.
The beneficial effects of the utility model are: on transformer and the integrated basis of metering module, realized physical isolation and two kinds of anti-electricity-theft modes based on the comparison of power supply data, ensured effectively prevention and detect electricity filching behavior.And secondary current instrument transformer is arranged on fuel tank outside, is convenient to power supply department and changes in the time of mulual inductor malfunction.
Brief description of the drawings
Fig. 1-1st, the front view of distribution transformer.
Fig. 1-2 is the left view of distribution transformer.
Voltage lead is cast in inner secondary current instrument transformer structure chart by Fig. 2.
Fig. 3-1st, the three-phase secondary current instrument transformer of distribution transformer and the box-packed front view of joining of protection.
Fig. 3-2nd, the three-phase secondary current instrument transformer of distribution transformer and the box-packed upward view of joining of protection.
Embodiment
Below in conjunction with accompanying drawing, distribution transformer of the present invention is illustrated.
Contrast accompanying drawing 1-1,1-2, distribution transformer, its structure comprises transformer body 1, the case 3 that be equipped with body side, in this case 3, metering module 2 is housed, transformer body 1 top is provided with low-tension bushing 5, the end dress secondary current instrument transformer 6 of low-tension bushing 5, and prevention is by 6 stealings of secondary current instrument transformer.Three secondary current instrument transformer 6 use protection boxes 8 are assembled together, and prevention is from terminal 9 stealings.Protective cover 7 is arranged on secondary current instrument transformer 6 and protection box 8 outsides.Secondary current instrument transformer 6 is connected at terminal 9 places by sleeve pipe 4 with metering module 2, preventing secondary current transformer 6 and metering module 2 connecting lines are bypassed or damage, and metering module 2 is obtained secondary voltage and the electric current of transformer, calculate the power of transformer, thereby provide power supply data for detection of electricity filching behavior.
Contrast accompanying drawing 2, be cast with voltage lead 10 according to secondary current instrument transformer 6 inside, voltage lead 10 is connected in secondary current instrument transformer 6 inside with the binding post of low-tension bushing 5, ensures that transformer is in the time of operation, voltage lead 10 cannot open circuit, and prevention is by the open circuit voltage stealing that goes between.Secondary current instrument transformer 6 bottoms are provided with terminal 9, for connecting instrument transformer 6 and Fig. 1 metering module 2.
Contrast accompanying drawing 3-1,3-2, the clamp nut 15 of 11 bottoms and protect lid 12 to be assembled together at the bottom of three secondary current instrument transformer 6 use bolts 13, nut 14, protection box.Be arranged in fuel tank cap 15 with protective cover 7 again.In the time that secondary current instrument transformer 6 need to be changed, the first step is pulled down transformer outlet cable 16, and second step is pulled down protective cover 7, the three steps and upwards lifted secondary current instrument transformer 6 and pull down bolt 13, nut 14, the 4th step is pulled down the connecting line at terminal 9 places, changes secondary current instrument transformer 6 thereby realize.
The utility model is that physically-isolated mode and the mode based on the comparison of power supply data are realized on same station power distribution transformer.
Physically-isolated implementation is the root that secondary current instrument transformer is arranged on to the outer low-tension bushing conductive pole of oil tank of transformer, three-phase secondary current instrument transformer is assembled together with can, when transformer-supplied, cannot dismantle, realizing secondary current instrument transformer from structure cannot bypass.Voltage lead is cast in to secondary current instrument transformer inside, voltage and secondary current instrument transformer lead-out wire and terminal by mechanical system to external isolation, realizing voltage lead-out wire cannot open circuit, and secondary current instrument transformer lead-out wire cannot bypass, thus the generation of prevention electricity filching behavior.
Implementation based on the comparison of power supply data is by integrated to metering module and transformer, and metering module packs in an airtight case, and this case is assemblied in transformer radiator outside, cannot dismantle.Voltage and secondary current instrument transformer lead-out wire are connected into metering module in case from sleeve pipe (adopting seamless square steel tube), and case shell adopts shielding material, prevents electromagnetic interference, provide data for detecting electricity filching behavior.
Claims (3)
1. a distribution transformer, comprise transformer body, transformer body side arranges casing, the in-built metering module of casing, transformer low voltage conduit connection column end dress secondary current instrument transformer, metering module and current transformer connecting line are arranged in metal sleeve, it is characterized in that transformer is provided with metering module, and secondary current instrument transformer is arranged on the end of the outer low-tension bushing binding post of oil tank of transformer.
2. a kind of distribution transformer according to claim 1; it is characterized in that: the low-tension bushing binding post of described transformer is equipped with outlet cable; protective cover is installed in the below of this outlet cable; in-built three the secondary current instrument transformers of protective cover; the bolt that in protective cover, assembling secondary current instrument transformer is used and protection box, protection box bottom is useful on the resigning hole of clamp nut.
3. a kind of distribution transformer according to claim 2, is characterized in that: there is voltage lead described secondary current instrument transformer inside, and voltage lead is in the outlet of the middle part of instrument transformer, and instrument transformer bottom is provided with voltage terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420371044.0U CN203966808U (en) | 2014-07-07 | 2014-07-07 | Distribution transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420371044.0U CN203966808U (en) | 2014-07-07 | 2014-07-07 | Distribution transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203966808U true CN203966808U (en) | 2014-11-26 |
Family
ID=51927361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420371044.0U Expired - Lifetime CN203966808U (en) | 2014-07-07 | 2014-07-07 | Distribution transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203966808U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109950030A (en) * | 2019-02-27 | 2019-06-28 | 南京电研电力自动化股份有限公司 | A kind of Anti-steal electric transformer and electricity anti-theft method |
-
2014
- 2014-07-07 CN CN201420371044.0U patent/CN203966808U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109950030A (en) * | 2019-02-27 | 2019-06-28 | 南京电研电力自动化股份有限公司 | A kind of Anti-steal electric transformer and electricity anti-theft method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141126 |