CN206282707U - Full-time intelligent protection energy-saving Covered transformer - Google Patents

Full-time intelligent protection energy-saving Covered transformer Download PDF

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Publication number
CN206282707U
CN206282707U CN201621466138.1U CN201621466138U CN206282707U CN 206282707 U CN206282707 U CN 206282707U CN 201621466138 U CN201621466138 U CN 201621466138U CN 206282707 U CN206282707 U CN 206282707U
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CN
China
Prior art keywords
fibre optic
cable connector
shell
pressure winding
optical fiber
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Active
Application number
CN201621466138.1U
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Chinese (zh)
Inventor
徐兴财
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SHANGHAI RUIQI ELECTRICAL EQUIPMENT CO Ltd
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SHANGHAI RUIQI ELECTRICAL EQUIPMENT CO Ltd
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Priority to CN201621466138.1U priority Critical patent/CN206282707U/en
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Publication of CN206282707U publication Critical patent/CN206282707U/en
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Abstract

A kind of full-time intelligent protection energy-saving Covered transformer, include shell entirely, iron core, high pressure winding, low pressure winding, high-voltage cable connector, low voltage cable connector, high-voltage and current-limitation fuse, built-in low voltage surge arrester, fibre optic temperature sensor, optical fiber high accuracy differential manometer and fibre optic current sensor, fibre optic temperature sensor is arranged in temperature meter base, temperature meter base is immersed in the insulated heat-conducting medium in shell, fibre optic current sensor is connected with the output end of low voltage cable connector, fibre optic temperature sensor, the signal output part of optical fiber high accuracy differential manometer and fibre optic current sensor is all connected in an optical fiber transmission network.Most economical design when the utility model is reduced using load loss, so that transformer is empty, load loss is than state scale value reduction by 20%, remote monitoring function is realized by fibre optic temperature sensor, optical fiber high accuracy differential manometer, optical fiber current mutual inductor and supporting combining unit, conciliation instrument, product degree of protection reaches IP68.

Description

Full-time intelligent protection energy-saving Covered transformer
Technical field:
The utility model is related to electricity field, more particularly to electrical power distribution power technology, more particularly to distribution transformer, specifically It is a kind of full-time intelligent protection energy-saving Covered transformer.
Background technology:
Total losses of transformer is made up of load loss (copper loss) and open circuit loss (iron loss), and load loss therein accounts for transformation 80% or so of device total losses.In the prior art, distribution transformer manufacturing makes great efforts to reduce the load loss of transformer, to arrive Up to the purpose of energy saving.But, the load loss reduction amplitude of current distribution transformer is only limitted to traditional electromagnetism calculating and sets Meter, the innovative design of actual loading energy saving effect and manufacture application cannot be implemented.
Covered transformer running environment condition is poor, and in general placement melt pit and wall hole, from terms of national defence angle, power network sets The protection of standby especially transformer station is particularly important, and the security reliability of distribution becomes more and more important, national also grid requirements power distribution network Buriedization, miniaturization, intellectuality, environmental protection and energy saving.Realize operation of the buried and long-range monitoring of transformer to underground power distribution network Security implications are great.
Transformer damage is mainly caused by overvoltage and overcurrent, and transformer sets high-voltage fuse guarantor in the prior art Shield and low pressure lightning protection, if only being protected with 10KV high-voltage arresters, it is impossible to the basic lightning protection punch through damage problem of determining that is situated between.
The content of the invention:
The purpose of this utility model is to provide a kind of full-time intelligent protection energy-saving Covered transformer, described this The full-time intelligent protection energy-saving Covered transformer of kind will solve monitoring means conventional in the prior art and be difficult to largely The technical problem of the Centralizing inspection of underground distribution transformer parameter.
This full-time intelligent protection energy-saving Covered transformer of the present utility model, including shell, iron core, high voltage winding Group, low pressure winding, high-voltage cable connector, low voltage cable connector, high-voltage and current-limitation fuse, built-in low voltage surge arrester, light Fine temperature sensor, optical fiber high accuracy differential manometer and fibre optic current sensor, described high-voltage cable connector and low-voltage cable Connector is arranged on shell, and described high pressure winding, low pressure winding and iron core are arranged in shell, described high pressure winding, Low pressure winding is arranged on iron core, and described high-voltage cable connector is connected with high pressure winding, low voltage cable connector and low pressure Winding is connected, and insulated heat-conducting medium is filled with described shell, and described high-voltage and current-limitation fuse is arranged on shell, described Built-in low voltage surge arrester be arranged in shell, described optical fiber high accuracy differential manometer is arranged on shell, described optical fiber Current sensor is arranged on low voltage cable connector, wherein, described high-voltage cable connector and low voltage cable connector is each From seal casinghousing is included, iknsulating liquid is filled with any one of seal casinghousing, the ratio of described iknsulating liquid The great proportion in water, described built-in low voltage surge arrester is grounded after being connected with the outlet of described low pressure winding, described High-voltage and current-limitation fuse is arranged in fuse sealed base, and high-voltage and current-limitation fuse is set with described fuse sealed base It is connect-disconnect structure, described fibre optic temperature sensor is arranged in temperature meter base, described temperature meter base is immersed in shell In insulated heat-conducting medium, described fibre optic current sensor is connected with the output end of low voltage cable connector, optical fiber sensing The signal output part of device, optical fiber high accuracy differential manometer and fibre optic current sensor is all connected in an optical fiber transmission network.
Further, described optical fiber high accuracy differential manometer is by connecing hole seat and cage connection.
Operation principle of the present utility model is:Transformer fe core diameter is bigger, then load loss is lower and open circuit loss It is bigger, therefore on the premise of transformer performance is met, substantial amounts of design comparison need to be carried out, set in the hope of most economical transformer Meter.This patent can quickly and easily directly obtain most economical design during load loss reduction using economic method for designing.Whether Nomal transformation overvoltage, or reversing transformation overvoltage, are due to there is thunder-strike current to flow through in low pressure winding, and in high pressure winding Induce high voltage and puncture transformer.If therefore only being protected with 10KV high-voltage arresters, the basic lightning protection punch through damage of determining that is situated between Problem, therefore low voltage surge arrester must be installed additional, could effectively suppress the positive reversing transformation overvoltage of transformer, improve operational reliability.For Protect underground transformer from the harm of overload current and short circuit current, plug-in high-voltage fuse is respectively arranged with high pressure three-phase inlet wire Disconnected device.When transformer low voltage side joint is loaded, in the presence of induced electromotive force, low pressure winding has load current to pass through, low pressure Side is have electric energy to export, and according to law of conservation of energy, high pressure winding will draw the energy needed for loading from power supply, by main flux Low-pressure side is delivered to, in the case where supply voltage is certain, increases input energy, high-tension current will necessarily be with low-tension current Increase and increase, there is high-tension fuse to protect during overload.The utility model is installed fibre optic temperature sensor, optical fiber high accuracy and is pressed Difference meter, optical fiber current mutual inductor and its supporting combining unit, conciliation instrument etc. realize remote monitoring function.By the change for obtaining Depressor temperature rise, liquid level and output current voltage condition monitor running state of transformer.
The utility model compares with prior art, and its effect is positive and obvious.The distribution transformer of China's loss high Device is higher by 50% -60% than international most advanced level, therefore manufacturing all every possible means of national distribution transformer are tried in recent years The load loss of transformer is reduced, the utility model uses Optimization Theory and material most economical design method, quickly and easily Directly obtain most economical design during load loss reduction so that transformer is empty, load loss reduces by 20% or so than state scale value, Transformer installs built-in low voltage surge arrester and high-voltage and current-limitation fuse is effectively protected lightning impulse overvoltage and height simultaneously Damage of the low pressure overcurrent to transformer, it is mutual by the fibre optic temperature sensor of installation, optical fiber high accuracy differential manometer, fibre-optic current Sensor and its supporting combining unit, conciliation instrument etc. realize remote monitoring function, and product degree of protection reaches buried transformation Device standard IP68.
Brief description of the drawings:
Fig. 1 is the structural representation of full-time intelligent protection energy-saving Covered transformer of the present utility model.
Fig. 2 is the overlooking the structure diagram of full-time intelligent protection energy-saving Covered transformer of the present utility model.
Specific embodiment:
Embodiment 1:
As shown in Figure 1 and Figure 2, full-time intelligent protection energy-saving Covered transformer of the present utility model, comprising shell 1, It is iron core 6, high pressure winding 5, low pressure winding 4, high-voltage cable connector 2, low voltage cable connector 3, high-voltage and current-limitation fuse 7, interior Concealed low voltage surge arrester 9, fibre optic temperature sensor 8, optical fiber high accuracy differential manometer 11, fibre optic current sensor 10, described height Piezoelectricity cable connector 2, low voltage cable connector 3 are arranged on shell 1, and described high pressure winding 5, low pressure winding 4 and iron core 6 set Put in shell 1, described high pressure winding 5, low pressure winding 4 are arranged on iron core 6, described high-voltage cable connector 2 with it is high Pressure winding connection 5, low voltage cable connector 3 is connected 4 with low pressure winding, and insulated heat-conducting medium, institute are filled with described shell 1 The high-voltage and current-limitation fuse 7 stated is arranged on shell 1, and described built-in low voltage surge arrester 9 is arranged in shell 1, described Fibre optic temperature sensor 8 is arranged on shell 1, and described optical fiber high accuracy differential manometer 11 is arranged on shell 1, described fibre electricity Flow sensor 10 is arranged on low voltage cable connector 3.
Described high-voltage cable connector 2, low voltage cable connector 3 (adds ratio by the way of machinery plus physical seal The great iknsulating liquid in water) realize its sealing performance.
Described low voltage surge arrester 9 is the built-in arrester in transformer case 1, and it goes out with low pressure winding 4 Line is grounded after connecting respectively.
Described high-voltage and current-limitation fuse 7 is arranged in independent special buried high-tension fuse sealed base, every Fuse is in independent connect-disconnect structure.
Described fibre optic temperature sensor 8 gos deep into shell interior insulation heat-conducting medium by independent temperature meter base, to obtain Insulated heat-conducting medium temperature.
Described optical fiber high accuracy differential manometer 11 connects hole seat connection to obtain shell interior insulation heat conduction Jie by the way that shell is special Matter level value.
Described fibre optic current sensor 10 obtains Circuit Fault on Secondary Transformer electric current feelings by the output end of low voltage cable connector 3 Condition.
Described fibre optic temperature sensor 8, optical fiber high accuracy differential manometer 11, the data acquired of fibre optic current sensor 10 pass through Supporting combining unit (mark), reconcile instrument (mark) and be incorporated to fibre system, to realize remote monitoring function.

Claims (2)

1. a kind of full-time intelligent protection energy-saving Covered transformer, comprising shell, iron core, high pressure winding, low pressure winding, height Piezoelectricity cable connector, low voltage cable connector, high-voltage and current-limitation fuse, built-in low voltage surge arrester, fibre optic temperature sensor, light Fine high accuracy differential manometer and fibre optic current sensor, described high-voltage cable connector and low voltage cable connector are arranged on shell On, described high pressure winding, low pressure winding and iron core are arranged in shell, and described high pressure winding, low pressure winding are arranged on iron On core, described high-voltage cable connector is connected with high pressure winding, and low voltage cable connector is connected with low pressure winding, and described is outer Insulated heat-conducting medium is filled with shell, described high-voltage and current-limitation fuse is arranged on shell, described built-in low pressure is taken shelter from the thunder Device is arranged in shell, and described optical fiber high accuracy differential manometer is arranged on shell, and described fibre optic current sensor is arranged on On low voltage cable connector, it is characterised in that:Described high-voltage cable connector and low voltage cable connector each include close Capsule body, is filled with iknsulating liquid in any one of seal casinghousing, the proportion of described iknsulating liquid is more than water Proportion, described built-in low voltage surge arrester is grounded after being connected with the outlet of described low pressure winding, and described high-voltage and current-limitation melts Disconnected device is arranged in fuse sealed base, and high-voltage and current-limitation fuse is set to plug knot with described fuse sealed base Structure, described fibre optic temperature sensor is arranged in temperature meter base, and described temperature meter base is immersed in the insulating heat-conductive in shell In medium, described fibre optic current sensor is connected with the output end of low voltage cable connector, and fibre optic temperature sensor, optical fiber are high The signal output part of precision differential manometer and fibre optic current sensor is all connected in an optical fiber transmission network.
2. full-time intelligent protection energy-saving Covered transformer as claimed in claim 1, it is characterised in that:Described optical fiber High accuracy differential manometer is by connecing hole seat and cage connection.
CN201621466138.1U 2016-12-29 2016-12-29 Full-time intelligent protection energy-saving Covered transformer Active CN206282707U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201621466138.1U CN206282707U (en) 2016-12-29 2016-12-29 Full-time intelligent protection energy-saving Covered transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201621466138.1U CN206282707U (en) 2016-12-29 2016-12-29 Full-time intelligent protection energy-saving Covered transformer

Publications (1)

Publication Number Publication Date
CN206282707U true CN206282707U (en) 2017-06-27

Family

ID=59071397

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201621466138.1U Active CN206282707U (en) 2016-12-29 2016-12-29 Full-time intelligent protection energy-saving Covered transformer

Country Status (1)

Country Link
CN (1) CN206282707U (en)

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