CN208971127U - A kind of distribution transformer multi-function protector - Google Patents
A kind of distribution transformer multi-function protector Download PDFInfo
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- CN208971127U CN208971127U CN201821859143.8U CN201821859143U CN208971127U CN 208971127 U CN208971127 U CN 208971127U CN 201821859143 U CN201821859143 U CN 201821859143U CN 208971127 U CN208971127 U CN 208971127U
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Abstract
A kind of distribution transformer multi-function protector; including detecting element, tranformer protection and executing agency; detecting element is connect with Protector for transformer; Protector for transformer is connect with executing agency; the Protector for transformer includes shell, input module, A/D module, Keysheet module, display module, power module, time delay module and output module; input module is connect with A/D module; A/D module, Keysheet module, display module, power module and time delay module are connect with CPU, and output module is connect with time delay module.The protector can acquire the various parameters of distribution transformer and carry out definite value comparison, be delayed, and when condition reaches the limiting value set, protector starting output, tripping distribution transformer low-pressure side is spaced apart, and cuts off fault current, achieve the purpose that protect transformer.
Description
Technical field
It transmits electricity the utility model relates to transformer and controls apparatus field, and in particular to a kind of distribution transformer multifunction protection
Device.
Background technique
10kV distribution transformer is during day-to-day operation, often since overload, short circuit, lightning stroke etc. damage, but it is most of
It is all due to being struck by lightning and overloading damage, wherein 90% or more overload belongs to one-phase overload caused by threephase load imbalance
Fever, leads to oil spout and insulation damages, but due in the design of current standard 10kV distribution transformer high-pressure side be all molten with falling
Disconnected device protection, can not preferably protect one-phase overload, and distribution transformer low-pressure side is spaced apart for two-way, can only be to its outlet
Branch is protected, and when the same phase load of two-way outlet is higher, frequently can lead to branch line and be spaced apart do not trip, but transformer is
Situations such as through one-phase overload, all protections are all failed at this time, be will lead to transformer and are seriously overheated until oil spout is burnt.
Utility model content
The utility model to solve the above-mentioned problems, devises a kind of distribution transformer multi-function protector, the protector
The various parameters of distribution transformer can be acquired and carry out definite value comparison, be delayed, when condition reaches the limiting value set,
Protector starting output, tripping distribution transformer low-pressure side are spaced apart, and cut off fault current, to reach the mesh of protection transformer
's.
In order to achieve the above technical purposes, reach above-mentioned technical effect, the utility model is real by the following technical programs
Existing:
A kind of distribution transformer multi-function protector, including detecting element, Protector for transformer and executing agency, detection member
Part is connect with Protector for transformer, and Protector for transformer is connect with executing agency, which is characterized in that the detecting element includes
Zero sequence current mutual inductor and temperature sensor, the Protector for transformer include shell, input module, A/D module, keyboard mould
Block, display module, power module, time delay module and output module, input module are connect with A/D module, A/D module, keyboard mould
Block, display module, power module and time delay module are connect with CPU, and output module is connect with time delay module, described CPU, A/D
Module and time delay module are fixed in shell, and the input module includes that the temperature detection input being set on the left of shell is inserted
What is be arranged on the right side of mouth, current detecting input socket and shell is spaced apart line detection input socket, and zero sequence current mutual inductor passes through conducting wire
It is connect with current detecting input interface, temperature sensor is fixed on transformer and is connected by conducting wire and temperature detection input socket
It connects, Keysheet module includes being set to the positive temperature setting button of shell and electric current setting button, and display module includes that temperature is aobvious
Display screen and electric current display screen, power module include the DC-DC power source socket being set on the left of shell, and output module includes being set to
Three-phase tripping output interface on the right side of shell, detecting element are connect with current detecting input socket, and executing agency and three-phase trip
Output interface connection.
Preferably, the executing agency selects electronic trip unit.
Preferably, the temperature display and electric current display screen select light emitting diode (LED) display screen.
Preferably, the CPU selects the TMS320F28335 type microprocessor chip of Texas Instrument's production, A/D module
Select ADC7606 type AD sampling A/D chip.
The beneficial effects of the utility model are: the protector can acquire the various parameters of distribution transformer and carry out definite value ratio
It is right, it is delayed, when condition reaches the limiting value set, protector starting output, tripping distribution transformer low-pressure side sky
It opens, cuts off fault current, achieve the purpose that protect transformer.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of the utility model embodiment, make required for being described below to embodiment
Attached drawing is briefly described, it should be apparent that, the drawings in the following description are merely some embodiments of the present invention,
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings
Other attached drawings.
Fig. 1 is a kind of wiring construction schematic diagram of distribution transformer multi-function protector;
Fig. 2 is the structural block diagram of the transformer protection device;
Fig. 3 is the main view of the transformer protection device;
Fig. 4 is the left view of the transformer protection device;
Fig. 5 is the right view of the transformer protection device;
Fig. 6 is the top view of the transformer protection device.
In attached drawing, parts list represented by the reference numerals are as follows:
1- Protector for transformer, 2- zero sequence current mutual inductor, 3- executing agency, 4- transformer, 5- temperature sensor, 11-
CPU, 12- input module, 13-A/D module, 14- Keysheet module, 15- display module, 16- power module, 17- time delay module,
18- output module, 121- temperature detection input socket, 122- current detecting input socket, 123- are spaced apart line detection input socket,
141- temperature setting button, 142- electric current set button, 143- protection act indicator light, 151- temperature display, 152- electric current
Display screen, 161-DC-DC outlet, 181- three-phase tripping output interface.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts
All other embodiment obtained, fall within the protection scope of the utility model.
Refering to fig. 1 shown in -6, a kind of distribution transformer multi-function protector, including detecting element 2, Protector for transformer 1
With executing agency 3, detecting element 2 is connect with Protector for transformer 1, and Protector for transformer 1 is connect with executing agency 3, described
Detecting element includes zero sequence current mutual inductor 2 and temperature sensor 5, and the Protector for transformer 1 includes shell, input module
12, A/D module 13, Keysheet module 14, display module 15, power module 16, time delay module 17 and output module 18, input module
12 connect with A/D module 13, A/D module 13, Keysheet module 14, display module 15, power module 16 and time delay module 17 with
CPU11 connection, output module 18 are connect with time delay module 17, and CPU11, A/D module 13 and time delay module 17 are fixed on
In shell, the input module 12 include be set to temperature detection input socket 121 on the left of shell, current detecting input is inserted
What is be arranged on the right side of mouth 122 and shell is spaced apart line detection input socket 123, and temperature sensor 5 is fixed on transformer 4 and by leading
Line is connect with temperature detection input socket 5, and Keysheet module 14 includes being set to the positive temperature setting button 141 of shell and electric current
Button 142 is set, display module 15 includes temperature display 151 and electric current display screen 152, and power module 16 includes being set to shell
DC-DC power source socket 161 on the left of body, output module 18 include the three-phase tripping output interface 181 being set on the right side of shell, inspection
It surveys element 2 to connect with current detecting input socket 122, executing agency 3 connect with three-phase tripping output interface 181.
In the present embodiment, executing agency 3 selects electronic trip unit, and temperature display 151 and electric current display screen 152 select hair
Optical diode display screen, CPU11 select the TMS320F28335 type microprocessor chip of Texas Instrument's production, and A/D module 13 is selected
With ADC7606 type AD sampling A/D chip.
The specific application of one of the present apparatus are as follows: detecting element 2 is that the zero sequence current mutual inductor in the present embodiment is single turn
Straight-through current transformer, installation is simple and can be installed additional on the basis of not changing existing equipment;When three-phase circuit occurs
When electric leakage or overload, there is leakage current to flow through in circuit, at this moment across the three-phase current phasor of zero sequence current mutual inductor 2 and not
Deng zero, just there is an induced voltage in the secondary coil of zero sequence current mutual inductor 2, zero sequence current mutual inductor 2 is by the induction of generation
Voltage and current information analog signal is sent to A/D module 13, is also secured to temperature sensor 5 on transformer 4 for transformation
The temperature value of device is converted to analog signal and is sent in A/D module 13, and A/D module 13 is by current analog signal and temperature simulation
Signal is converted to digital signal and is sent in CPU11, and CPU11 is by the actual value of the electric current of input and temperature and passes through keyboard mould
The electric current and desired temperature that block 14 inputs compare, when temperature value is greater than respective setting value to actual current value,
The executing agency 3 namely electronic trip unit that CPU11 driving is connect with its three-phase tripping output interface 181 disconnect step down side
Switch, cut off fault current to protect the purpose of transformer 4;CPU11, which exports current value and temperature value to temperature, simultaneously shows
It is shown on display screen 151 and electric current display screen 152.
In the description of this specification, the description of reference term " one embodiment ", " example ", " specific example " etc. means
Particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least one of the utility model
In embodiment or example.In the present specification, schematic expression of the above terms be not necessarily referring to identical embodiment or
Example.Moreover, particular features, structures, materials, or characteristics described can be in any one or more embodiment or examples
In can be combined in any suitable manner.
The preferred embodiment in the utility model disclosed above is only intended to help to illustrate the utility model.Preferred embodiment is simultaneously
There is no the details that detailed descriptionthe is all, also not limiting the utility model is only the specific embodiment.Obviously, according to this theory
The content of bright book can make many modifications and variations.These embodiments are chosen and specifically described to this specification, is in order to preferably
The principles of the present invention and practical application are explained, so that skilled artisan be enable to better understand and utilize this
Utility model.The utility model is limited only by the claims and their full scope and equivalents.
Claims (4)
1. a kind of distribution transformer multi-function protector, including detecting element, Protector for transformer and executing agency, detecting element
It is connect with Protector for transformer, Protector for transformer is connect with executing agency, which is characterized in that the detecting element includes zero
Sequence current transformer and temperature sensor, the Protector for transformer include shell, input module, A/D module, keyboard mould
Block, display module, power module, time delay module and output module, input module are connect with A/D module, A/D module, keyboard mould
Block, display module, power module and time delay module are connect with CPU, and output module is connect with time delay module, described CPU, A/D
Module and time delay module are fixed in shell, and the input module includes that the temperature detection input being set on the left of shell is inserted
What is be arranged on the right side of mouth, current detecting input socket and shell is spaced apart line detection input socket, and zero sequence current mutual inductor passes through conducting wire
It is connect with current detecting input interface, temperature sensor is fixed on transformer and is connected by conducting wire and temperature detection input socket
It connects, Keysheet module includes being set to the positive temperature setting button of shell and electric current setting button, and display module includes that temperature is aobvious
Display screen and electric current display screen, power module include the DC-DC power source socket being set on the left of shell, and output module includes being set to
Three-phase tripping output interface on the right side of shell, detecting element are connect with current detecting input socket, and executing agency and three-phase trip
Output interface connection.
2. a kind of distribution transformer multi-function protector according to claim 1, which is characterized in that the executing agency
Select electronic trip unit.
3. a kind of distribution transformer multi-function protector according to claim 1, which is characterized in that the temperature display
Screen and electric current display screen select light emitting diode (LED) display screen.
4. a kind of distribution transformer multi-function protector according to claim 1, which is characterized in that the CPU is selected
The TMS320F28335 type microprocessor chip of Texas Instrument's production, A/D module select ADC7606 type AD sampling A/D chip.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201821859143.8U CN208971127U (en) | 2018-11-13 | 2018-11-13 | A kind of distribution transformer multi-function protector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201821859143.8U CN208971127U (en) | 2018-11-13 | 2018-11-13 | A kind of distribution transformer multi-function protector |
Publications (1)
Publication Number | Publication Date |
---|---|
CN208971127U true CN208971127U (en) | 2019-06-11 |
Family
ID=66765187
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201821859143.8U Active CN208971127U (en) | 2018-11-13 | 2018-11-13 | A kind of distribution transformer multi-function protector |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN208971127U (en) |
-
2018
- 2018-11-13 CN CN201821859143.8U patent/CN208971127U/en active Active
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