CN110031709A - A kind of distribution switchgear Multifunctional network electric power instrument - Google Patents
A kind of distribution switchgear Multifunctional network electric power instrument Download PDFInfo
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- CN110031709A CN110031709A CN201910379224.0A CN201910379224A CN110031709A CN 110031709 A CN110031709 A CN 110031709A CN 201910379224 A CN201910379224 A CN 201910379224A CN 110031709 A CN110031709 A CN 110031709A
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- 238000012545 processing Methods 0.000 claims abstract description 47
- 238000004891 communication Methods 0.000 claims abstract description 29
- 238000006243 chemical reaction Methods 0.000 claims abstract description 28
- 238000005259 measurement Methods 0.000 claims abstract description 27
- 230000017525 heat dissipation Effects 0.000 claims abstract description 12
- 230000009466 transformation Effects 0.000 claims 1
- 238000000034 method Methods 0.000 description 7
- 238000007789 sealing Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000000712 assembly Effects 0.000 description 4
- 238000000429 assembly Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 208000025274 Lightning injury Diseases 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
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Abstract
The invention discloses a kind of distribution switchgear Multifunctional network electric power instruments.Electric instrument includes: shell, power conversion and communication board, CT/PT measurement and input and output plate, CPU processing board, aobvious control plate；Multi-grid radiating surface is provided on the side wall of the bottom case of shell, gap, CT/PT measurement between multi-grid radiating surface and the measurement of power conversion and communication board and CT/PT and input and output plate and the gap between input and output plate and CPU processing board, gap between CPU processing board and aobvious control plate forms thermal convection heat dissipation channel, improve the heat dissipation performance of Multifunctional network electric power instrument, it is closely buckled on aobvious control plate by the transparent protecting crust and face-piece of shell, the display screen of aobvious control plate is protected and sealed.
Description
Technical field
The present invention relates to distribution field of switches, in particular to a kind of distribution switchgear Multifunctional network electric power instrument.
Background technique
Distribution switchgear is a kind of basic electrical circuitry equipment that the application of distribution link has a large capacity and a wide range in electric system, core
The performance of component is to determine the important technology support of distribution switchgear or even the safe and stable operation of electrical power distribution system, especially
It is using Multifunctional network electric power instrument as the performance degree of stability of the secondary power component of representative, and it is right in industry gradually to become
The important evaluation indicators of distribution switchgear.
Multifunctional network electric power instrument carries the key player of " forceful electric power brain " in distribution switchgear, with electrical
The continuous promotion that intelligent and automation application and Engineering Project Construction require electrical circuitry equipment, conventional electric power instrument is in work
The index needs of reliability, stability in condition environmental change step up, the excessive concern intelligence of traditional network electric instrument
Change element, function increase, and basic property and application demand are not paid attention to, the various problems of emerged in operation make intelligent hair
It does not wave not come out, it is seen that how to improve the heat dissipation in Multifunctional network electric power instrument longtime running, sealing problem develops as technology
Trend.
Summary of the invention
The object of the present invention is to provide a kind of distribution switchgear Multifunctional network electric power instruments, to improve multifunctional mesh
Heat dissipation performance, sealing performance in network electric instrument longtime running.
To achieve the above object, the present invention provides following schemes:
The present invention provides a kind of distribution switchgear Multifunctional network electric power instrument, the electric instrument include: shell,
Power conversion and communication board, CT/PT measurement and input and output plate, CPU processing board, aobvious control plate；
The shell includes bottom case, transparent protecting crust and face-piece；
The inside of the base side walls is disposed with first boss, the first buckle, second boss, the second card from top to bottom
Button and third boss；
The power conversion and communication board are fixed by screws on the bottom surface of the bottom case；
CT/PT measurement and input and output plate by the CT/PT measure and input and output plate on be arranged with it is described
Corresponding first groove of second boss is set in the second boss of the bottom case, and passes through the first boss and described first
Buckle is fixed；
The CPU processing board passes through the second groove set corresponding with the third boss for being arranged in the CPU processing board
It is located on the third boss of the bottom case, and is fixed by the second boss and second buckle；
The aobvious control plate is fixed by screws in the outer edge of the bottom case；
The outside of the aobvious control plate is arranged in the transparent protecting crust, and the outer of the transparent protecting crust is arranged in the face-piece
Portion, the transparent protecting crust and the face-piece are tightly connected with the bottom case；
It is provided with multi-grid radiating surface, the multi-grid radiating surface and the power conversion on the side wall of the bottom case and leads to
Believe plate, the CT/PT measurement and input and output plate, the CPU processing board and the aobvious control plate it is vertical, and with the power conversion
And gap, CT/PT measurement and input and output plate and described between communication board and CT/PT measurement and input and output plate
Gap between CPU processing board, the gap between the CPU processing board and the aobvious control plate form thermal convection heat dissipation channel.
Optionally, the first boss includes four the first cuboid boss, four the first cuboid boss difference
It is fixed on the angular position of the every two side of the bottom case.
Optionally, the second boss includes four the second cuboid boss and a third cuboid boss, four institutes
State the angular position that the second cuboid boss is individually fixed between the every two side of the bottom case；The third cuboid is convex
Platform is fixed on a side wall of the bottom case；
The floor space of the second cuboid boss is less than the floor space of the first cuboid boss.
Optionally, the third boss includes eight the 4th cuboid boss, eight the 4th cuboid boss difference
It is fixed on the both sides of four sides of the bottom case；
The floor space of the third cuboid boss is less than the floor space of the second cuboid boss.
Optionally, the length of the first boss, the second boss and the third boss is all larger than 5mm.
Optionally, the input terminal of the hf switching power supply of the power conversion and communication board and the CT/PT are measured
And the PT acquisition of input and output plate and the input terminal of signal processing circuit connect.
Optionally, the aobvious control plate includes short in size display screen and multiple keys.
Optionally, multiple first key through-holes are offered on the transparent protecting crust, offer display screen on the face-piece
Multiple keys of window and multiple second key through-holes, the aobvious control plate pass through the first key through-hole and described second
Key through-hole protrusion.
The specific embodiment provided according to the present invention, the invention discloses following technical effects:
The invention discloses a kind of distribution switchgear Multifunctional network electric power instrument, the electric instrument includes: shell
Body, power conversion and communication board, CT/PT measurement and input and output plate, CPU processing board, aobvious control plate；The side of the bottom case of the shell
Multi-grid radiating surface is provided on wall, multi-grid radiating surface is measured and opened with the power conversion and communication board and the CT/PT
Enter gap, CT/PT measurement and the gap between input and output plate and the CPU processing board outputed between plate, the CPU
Gap between processing board and the aobvious control plate forms thermal convection heat dissipation channel, improves the heat dissipation of Multifunctional network electric power instrument
Performance is closely buckled on aobvious control plate by the transparent protecting crust and face-piece of shell, carries out protection and close to the display screen of aobvious control plate
Envelope.The present invention passes through circuit board assemblies (power conversion and communication board, CT/PT measurement and input and output plate, CPU processing board, aobvious control
Plate) and shell optimization design and mounting arrangement mode, improve the thermal diffusivity in Multifunctional network electric power instrument longtime running
Energy, sealing performance.
The input terminal and the CT/PT of the hf switching power supply of the power conversion and communication board of the invention simultaneously
The PT of measurement and input and output plate acquisition and the input terminal connection of signal processing circuit, by CT/PT measurement and input and output
The PT of plate is acquired and signal processing circuit increases power conversion and the power supply of communication board configures, and saves external power supply input
The quantity of terminal and peripheral conducting wire, make Multifunctional network electric power instrument of the invention be more applicable for distribution switchgear.
Display board of the invention realizes display function by short in size display screen, is not necessarily to special liquid crystal screen driving chip, directly
Driving can be realized by the master chip of CPU processing board, simplify circuit structure.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without any creative labor, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of structure chart of distribution switchgear Multifunctional network electric power instrument provided by the invention；
Fig. 2 is the structure chart of third boss provided by the invention；
Fig. 3 is the assembling schematic diagram of CPU processing board and shell provided by the invention；
Fig. 4 is the scheme of installation of Multifunctional network electric power instrument provided by the invention；
Wiring and of the invention external power supply of the Fig. 5 for external power supply connecting terminal in the prior art provided by the invention
The comparison diagram of the wiring of connecting terminal；Wherein, Fig. 5 (a) is the wiring diagram of external power supply connecting terminal in the prior art；Fig. 5
It (b) is the wiring diagram of external power supply connecting terminal of the invention；
Fig. 6 is a kind of working principle diagram of distribution switchgear Multifunctional network electric power instrument provided by the invention；
Wherein, 1 is bottom case, and 2 be power conversion and communication board, and 3 be external wiring terminal, and 4 measure and open for CT/PT into opening
Ejecting plate, 5 be multi-grid radiating surface, and 6 be CPU processing board, and 7 be display board, and 8 be transparent protecting crust, and 9 be face-piece, and 10 be instrument door,
11 be the 4th cuboid boss, and 12 be the second buckle；13 be the second cuboid boss.
Specific embodiment
The object of the present invention is to provide a kind of distribution switchgear Multifunctional network electric power instruments, to improve multifunctional mesh
Heat dissipation performance, sealing performance in network electric instrument longtime running.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Mode is applied to be described in further detail invention.
As shown in Figure 1, the present invention provides a kind of distribution switchgear Multifunctional network electric power instrument, the electric instrument
It include: shell, power conversion and communication board 2, CT/PT measurement and input and output plate 4, CPU processing board 6, aobvious control plate 7；The shell
Body includes bottom case 1, transparent protecting crust 8 and face-piece 9.
The inside of 1 side wall of bottom case is disposed with first boss, the first buckle, second boss, second from top to bottom
Buckle 12 and third boss；The first boss includes four the first cuboid boss, four the first cuboid boss point
It is not fixed on the angular position of the every two side of the bottom case 1；The second boss includes four the second cuboid boss 13
With a third cuboid boss, four the second cuboid boss 13 are individually fixed in the every two side of the bottom case 1
Between angular position；The third cuboid boss is fixed on a side wall of the bottom case 1；Second cuboid is convex
The floor space of platform 13 is less than the floor space of the first cuboid boss；The third boss includes eight the 4th cuboid boss
11, eight the 4th cuboid boss 11 are individually fixed in the both sides of four sides of the bottom case 1；The third is long
The floor space of cube boss is less than the floor space of the second cuboid boss 13.
The power conversion and communication board 2 are fixed by screws on the bottom surface of the bottom case 1；CT/PT measurement and
Input and output plate 4 by the CT/PT measure and input and output plate 4 on the first groove corresponding with the second boss for being arranged
It is set in the second boss of the bottom case 1, and is fixed by the first boss and first buckle；The CPU processing
Plate 6 is set in the of the bottom case 1 by the second groove corresponding with the third boss being arranged in the CPU processing board 6
On three boss, and it is fixed by the second boss and second buckle 12；The aobvious control plate 7 is fixed by screws in described
The outer edge of bottom case 1；The outside of the aobvious control plate 7 is arranged in the transparent protecting crust 8；The face-piece 9 is arranged described transparent
The outside of protecting crust 8, the transparent protecting crust 8 and the face-piece 9 are tightly connected with the bottom case 1.With power conversion and lead to
Believe that plate is mounting means and position is standard, is clamped respectively at 18mm, at 38mm, at 45mm, at 55mm forward in bottom case 1
CT/PT measurement and input and output plate 4, CPU processing board 6, aobvious control plate 7, finally exempt from screw for transparent protecting crust 8 with face-piece 9 together
It is buckled on bottom case 1.Aobvious control plate 7, transparent protecting crust 8,9 part of face-piece are under normal conditions outside distribution switchgear, are passed through
Transparent protecting crust 8, two layers of face-piece 9 protection can carry out excellent sealing to line traffic control plate.
The dress of the assembly method and CPU processing board 6 and shell of CT/PT measurement and input and output plate 4 and shell of the invention
It is identical with mode, the only difference of boss and groove shapes, the present invention by taking CPU processing board 6 and the assembly method of shell as an example,
CT/PT measurement and input and output plate 4 and the assembly method of shell are illustrated with CPU processing board 6 and the assembly method of shell.
As shown in Figures 2 and 3, the 6 four angle designs of CPU processing board have right with eight the 4th cuboid boss 11 of third boss
The step shape answered is oriented to by eight the 4th cuboid boss 11 being arranged on 1 inner wall of bottom case, sinks to 1 inner wall of bottom case
On the end face of upper symmetrically arranged four the second cuboid boss 13, and it is fixed by symmetrical four second buckles 12, group
At the assembly relation of CPU processing board 6 and shell.
The length of the first boss, the second boss and the third boss is all larger than 5mm.
Multi-grid radiating surface 5, the multi-grid radiating surface 5 and the power conversion are provided on the side wall of the bottom case 1
And communication board 2, the CT/PT measurement and input and output plate 4, the CPU processing board 6 and the aobvious control plate 7 are vertically, circuit board group
Extra 5mm distance is reserved between part forms thermal convection heat dissipation channel with multi-grid radiating surface 5.As shown in figure 4, by of the invention more
Functional network electric instrument is installed on instrument door 10, and thermal convection heat dissipation channel can be formed inside instrument door 10.
The input terminal of the hf switching power supply of the power conversion and communication board 2 measure and open with the CT/PT into
Output the PT acquisition of plate 4 and the input terminal connection of signal processing circuit.As shown in figure 5, the instrument of the prior art needs 6 power supplys
Connecting terminal, and Multifunctional network electric power instrument of the invention only needs 4 power supply terminals, saves external power supply terminals
The quantity of son, and peripheral conducting wire.
The aobvious control plate 7 includes short in size display screen and multiple keys.Offered on the transparent protecting crust 8 multiple first by
Key through-hole, offers display screen windows and multiple second key through-holes on the face-piece 9, and the multiple of the aobvious control plate 7 described press
Key is protruded by the first key through-hole and the second key through-hole.Face-piece 9 and the close spiral-lock of transparent protecting crust 8 are in aobvious control
On plate 7, the key shown on control plate 7 is protruded by the first key through-hole of transparent protecting crust 8 and the second key through-hole of face-piece 9,
Other components on aobvious control plate 7 are all enclosed in by transparent protecting crust 8 interior, are protected display portion and are sealed, reach naked
It is exposed at the sealing and protection level requirements used other than switchgear instrument door 10.And the present invention uses short in size display screen, is not necessarily to
Special liquid crystal screen driving chip, directly with the main control chip driving in CPU processing board 6.
As shown in fig. 6, the main control chip in CPU processing board 6 of the invention is TMS320F2808, the main control chip is also
Have respectively with it is aobvious control plate 7 on more key circuits, short in size screen display circuit；Operating system circuit in CPU processing board 6, program
Debugging and programming circuitry；CT/PT measurement and the input and output circuit on input and output plate 4, CT sampling and signal processing circuit, PT
Using and signal processing circuit；Power conversion and the hf switching power supply on communication board 2, the electrical connection of RS485 telecommunication circuit,
And then three-phase voltage, three-phase current are acquired, push button signalling carries out integrated logic processing and algorithm process, on short in size display screen
It shows AC three-phase voltage, three-phase current, power, power factor, frequency, electric energy, intake, and then realizes monitoring function.
Connection relationship between each circuit board assemblies of the invention are as follows: be welded with terminals on power conversion and communication board 2
The base of son, and then be connected with connecting terminal circuit；Be also devised on power conversion and communication board 2 with CT/PT measure and open into
Output the base of 4 winding displacement of plate connection；Design has PCB contact pin to be electrically connected with CPU processing board 6 in CT/PT measurement and input and output plate 4
Connect, be between the CPU processing board 6 and aobvious control plate 7 can the winding displacement of plug be flexible coupling and constitute electric signal transmitting.
It is attached in the PCB construction arrangement by the connection relationship between each circuit board assemblies, and then will
In collection voltages, current-mode analog quantity in external wiring terminal 3, and the On-off signal to each circuit board assemblies of acquisition, He Ge electricity
Road board group part will output signal and communication is output on connecting terminal, realizes the basic function of intelligence instrument.
The working principle of Multifunctional network electric power instrument of the invention are as follows: voltage, the electric current of the acquisition of external wiring terminal 3 are defeated
Enter to progress power conversion on power conversion and communication board 2 and control power supply and provides；CT/PT measurement is input to by winding displacement and is opened
Enter to output on plate 4 carry out three-phase voltage, three-phase current attenuation transform, and then be output in CPU processing board 6 be AD converted with
The calculating of the functions such as power, frequency is uniformly shown on the short in size display screen of control plate 7.It is opened by what CPU processing board 6 exported
Signal and communication signal are measured via CT/PT out and input and output plate 4 arrives power conversion and communication board 2 passes through connecting terminal base
It connect and is output to the outside with external wiring terminal 3.Multifunctional network electric power instrument of the invention, which can be used for the present invention, to be measured
With monitoring distribution switchgear AC three-phase phase voltage, line voltage, three-phase current, active power, reactive power, apparent energy,
Power factor and frequency, reactive energy, the state of external passive contact, pass through with other equipment or system three-phase active energy
458 communications carry out data exchange etc..Protection circuit is isolated using 485 dedicated isolating chips and is had to 458 telecommunication circuit, can
To prevent common mode, differential mode voltage interference, lightning stroke and mis-wired damage port.
The technical effects of the invention are that: it is on the one hand fundamentally to improve electric instrument longtime running to be sealed in heat dissipation
Problem keeps product reliability and stability more preferable；It on the other hand is that can save external power input and be switched with distribution
Equipment periphery connecting wire, using more convenient, saving cost.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
Specific examples are used herein to describe the principles and implementation manners of the present invention, the explanation of above embodiments
Method and its core concept of the invention are merely used to help understand, described embodiment is only that a part of the invention is real
Example is applied, instead of all the embodiments, based on the embodiments of the present invention, those of ordinary skill in the art are not making creation
Property labour under the premise of every other embodiment obtained, shall fall within the protection scope of the present invention.
Claims (8)
1. a kind of distribution switchgear Multifunctional network electric power instrument, which is characterized in that the electric instrument include: shell,
Power conversion and communication board, CT/PT measurement and input and output plate, CPU processing board, aobvious control plate；
The shell includes bottom case, transparent protecting crust and face-piece；
The inside of the base side walls be disposed with from top to bottom first boss, the first buckle, second boss, second buckle and
Third boss；
The power conversion and communication board are fixed by screws on the bottom surface of the bottom case；
CT/PT measurement and input and output plate by the CT/PT measure and input and output plate on be arranged with described second
Corresponding first groove of boss is set in the second boss of the bottom case, and passes through the first boss and first buckle
It is fixed；
The CPU processing board is set in by the second groove corresponding with the third boss being arranged in the CPU processing board
On the third boss of the bottom case, and fixed by the second boss and second buckle；
The aobvious control plate is fixed by screws in the outer edge of the bottom case；
The outside of the aobvious control plate is arranged in the transparent protecting crust, and the outside of the transparent protecting crust is arranged in the face-piece,
The transparent protecting crust and the face-piece are tightly connected with the bottom case；
Multi-grid radiating surface, the multi-grid radiating surface and the power conversion and communication are provided on the side wall of the bottom case
Plate, the CT/PT measurement and input and output plate, the CPU processing board and the aobvious control plate it is vertical, and with the power conversion and
Gap, CT/PT measurement and input and output plate and described between communication board and CT/PT measurement and input and output plate
Gap between CPU processing board, the gap between the CPU processing board and the aobvious control plate form thermal convection heat dissipation channel.
2. distribution switchgear Multifunctional network electric power instrument according to claim 1, which is characterized in that described first
Boss includes four the first cuboid boss, and four the first cuboid boss are individually fixed in the every two side of the bottom case
The angular position in face.
3. distribution switchgear Multifunctional network electric power instrument according to claim 2, which is characterized in that described second
Boss includes four the second cuboid boss and a third cuboid boss, and four the second cuboid boss are fixed respectively
Angular position between the every two side of the bottom case；The third cuboid boss is fixed on a side of the bottom case
On wall；
The floor space of the second cuboid boss is less than the floor space of the first cuboid boss.
4. distribution switchgear Multifunctional network electric power instrument according to claim 3, which is characterized in that the third
Boss includes eight the 4th cuboid boss, and eight the 4th cuboid boss are individually fixed in described in four of the bottom case
The both sides of side；
The floor space of the third cuboid boss is less than the floor space of the second cuboid boss.
5. distribution switchgear Multifunctional network electric power instrument according to claim 1, which is characterized in that described first
The length of boss, the second boss and the third boss is all larger than 5mm.
6. distribution switchgear Multifunctional network electric power instrument according to claim 1, which is characterized in that the power supply
The input terminal and the CT/PT of the hf switching power supply of transformation and communication board measure and the PT of input and output plate is acquired and letter
The input terminal connection of number processing circuit.
7. distribution switchgear Multifunctional network electric power instrument according to claim 1, which is characterized in that the aobvious control
Plate includes short in size display screen and multiple keys.
8. distribution switchgear Multifunctional network electric power instrument according to claim 7, which is characterized in that described transparent
Multiple first key through-holes are offered on protecting crust, and display screen windows and multiple second key through-holes are offered on the face-piece,
Multiple keys of the aobvious control plate are protruded by the first key through-hole and the second key through-hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910379224.0A CN110031709B (en) | 2019-05-08 | 2019-05-08 | Multifunctional network electric power instrument for distribution network switch equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910379224.0A CN110031709B (en) | 2019-05-08 | 2019-05-08 | Multifunctional network electric power instrument for distribution network switch equipment |
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| Publication Number | Publication Date |
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| CN110031709A true CN110031709A (en) | 2019-07-19 |
| CN110031709B CN110031709B (en) | 2024-07-12 |
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