CN204156305U - The low-voltage distribution cabinet of low-pressure line-outgoing banded cable load current checkout gear - Google Patents
The low-voltage distribution cabinet of low-pressure line-outgoing banded cable load current checkout gear Download PDFInfo
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- CN204156305U CN204156305U CN201420584521.1U CN201420584521U CN204156305U CN 204156305 U CN204156305 U CN 204156305U CN 201420584521 U CN201420584521 U CN 201420584521U CN 204156305 U CN204156305 U CN 204156305U
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- 238000005070 sampling Methods 0.000 claims description 13
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 230000005611 electricity Effects 0.000 abstract description 2
- 230000003044 adaptive effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model discloses the low-voltage distribution cabinet of low-pressure line-outgoing banded cable load current checkout gear, comprise 400V low pressure cabinet, cabinet door, triple line and master on off, triple line connects low-pressure line-outgoing cable by separating brake; It is characterized in that: each described root low-pressure line-outgoing cable is equipped with low-pressure line-outgoing cable load current checkout gear; Each low-pressure line-outgoing cable load current checkout gear all connects B, C phase line by same Switching Power Supply; The rotation axis of cabinet door is provided with out cabinet detector.The low-voltage distribution cabinet of this low-pressure line-outgoing banded cable load current checkout gear, owing to low-pressure line-outgoing cable load current checkout gear to be directly installed on each the root low-pressure line-outgoing cable in cabinet, patrol officer opens the load current of cabinet door and each root low-pressure line-outgoing cable of Observable, hand need not be put in low-voltage distribution cabinet and carry out any operation, directly can read the effective value of the load current of each cable outlet from device, safe and efficient, economize on electricity, energy consumption is low.
Description
Technical field
The utility model relates to a kind of improvement of 400V low-voltage distribution cabinet, specifically a kind of low-voltage distribution cabinet being provided with the low-pressure line-outgoing banded cable load current checkout gear of fixing current sensing means on low-pressure line-outgoing cable.Be mainly used on each the root outlet cable in low-voltage distribution cabinet, the load current size of the every root low-pressure line-outgoing cable of display, is convenient to power distribution cabinet patrol officer and records statistics in real time.
Background technology
At present, the 400V low-voltage distribution cabinet used, comprises 400V low pressure cabinet, low-voltage cabinet door, triple line A, B, C and master on off, and triple line A, B, C connect low-pressure line-outgoing cable by separating brake; Described low-pressure line-outgoing cable can connect 2-5 as required, even more; In order to ensure Electrical Safety, need often to patrol and examine and concentrated thermometric survey load to low-pressure line-outgoing cable.The deficiency of this 400V low-voltage distribution cabinet is: one is owing to not having fixing low-pressure line-outgoing cable load current checkout gear in 400V low-voltage distribution cabinet, so in Daily Round Check work, generally that artificial clamp on amperemeter is measured, and to detect successively the load current of each root low-pressure line-outgoing cable, so use inconvenient, labour intensity large, waste time and energy, inefficiency; Two is because the liquid crystal display of clamp on amperemeter is fixed on the panel of its housing, numeral is little, be difficult to see clearly, in order to see the reading of table clearly, patrol officer needs to approach liquid crystal display and carefully observes, then often charging equipment is touched in generation head or other positions of health by mistake, there is very large potential safety hazard.
Known by retrieving, have not yet to see and current sensing means is directly fixed on low-pressure line-outgoing cable, opens the low-voltage distribution cabinet of low-pressure line-outgoing banded cable load current checkout gear that cabinet door can know the load current of each root low-pressure line-outgoing cable of display.
As everyone knows, along with the development of electronic technology, current sensor, sampling processor, analog to digital converter, digital processing unit, light-emitting diode display, drive cabinet detector and become ripe electric elements with Switching Power Supply, this be for 400V low-voltage distribution cabinet Daily Round Check, substitute clamp on amperemeter provide simple may.
Summary of the invention
The purpose of this utility model is to provide a kind of and is directly fixed on by current sensing means on low-pressure line-outgoing cable, open the load current that cabinet door can know each root low-pressure line-outgoing cable of display, and simple for structure, the amount of labour can be reduced, save monitoring time, improve the low-voltage distribution cabinet of patrolling and examining the low-pressure line-outgoing banded cable load current checkout gear of efficiency and fail safe.
In order to reach above object, the technical scheme that the utility model adopts is: the low-voltage distribution cabinet of this low-pressure line-outgoing banded cable load current checkout gear, comprise 400V low pressure cabinet, low-voltage cabinet door, triple line A, B, C and master on off, triple line A, B, C connect low-pressure line-outgoing cable by separating brake; Described low-pressure line-outgoing cable can connect 2-5 as required, even more, it is characterized in that: each described root low-pressure line-outgoing cable is equipped with low-pressure line-outgoing cable load current checkout gear; Each described low-pressure line-outgoing cable load current checkout gear is all by same Switching Power Supply.
The utility model is also implemented by following measure: each described low-pressure line-outgoing cable load current checkout gear, includes current sensor, sampling processor, analog to digital converter, digital processing unit and light-emitting diode display and shell thereof; Current sensor in each described low-pressure line-outgoing cable load current checkout gear, sampling processor, analog to digital converter, digital processing unit are connected same Switching Power Supply with after light-emitting diode display parallel connection; Digital processing unit in each described low-pressure line-outgoing cable load current checkout gear is connected with same cabinet detector of opening by wire; Light-emitting diode display in each described low-pressure line-outgoing cable load current checkout gear is all located on the antetheca of place shell; Current sensor in each described low-pressure line-outgoing cable load current checkout gear is all sleeved on corresponding low-pressure line-outgoing cable.
Described current sensor is the current sensor of the open-close type based on Hall element or Luo-coil, is prior art, can directly buys.
Described sampling processor comprises scale amplifying, voltage lifting, filtering and clamper four part, and by the signal that the signal condition that current sensor exports becomes analog to digital converter to accept, analog signal is converted to digital signal by analog to digital converter, is also prior art.
Described digital processing unit is the CPU of single-chip microcomputer, DSP, ARM and FPGA, adopt the core algorithm based on Second Order Generalized Integrator (SOGI)+FLL (FLL), carry out the calculating of current effective value, algorithm is strong to power frequency, amplitude adaptive ability, the sampling window length simultaneously needed is short, real-time is good, when power frequency, amplitude fluctuations, and still can calculating current effective value fast and accurately; The result of computing is shown by high-brightness LED display 65, is also prior art.
Described light-emitting diode display adopts highlighted charactron, and numerical monitor is clear, is convenient to remote observation, is also prior art, can directly buys from the market.
Described Switching Power Supply is the one of power supply, has the advantage that energy consumption is low, rapid heat dissipation, output voltage range are large.
The beneficial effects of the utility model are: the low-voltage distribution cabinet of this low-pressure line-outgoing banded cable load current checkout gear, owing to low-pressure line-outgoing cable load current checkout gear to be directly installed on each the root low-pressure line-outgoing cable in 400V low-voltage distribution cabinet, patrol officer opens the load current of low-voltage distribution cabinet door and each root low-pressure line-outgoing cable of Observable, no longer carry clamp on amperemeter, hand need not be put in low-voltage distribution cabinet and carry out any operation, the effective value of the load current of each cable outlet directly can be read from device, safe and efficient; Owing to have employed light-emitting diode display, open the load current that cabinet door can know each root low-pressure line-outgoing cable of display, so can realize reducing the amount of labour, saving monitoring time, improving and patrol and examine efficiency, use safety; That be in holding state when not opening the door, so economize on electricity, energy consumption is low by the switch control rule of low-voltage cabinet door owing to opening the unlatching of cabinet detector or closedown.
Accompanying drawing explanation
Fig. 1 is that structure of the present utility model launches front-view schematic diagram.
Fig. 2 is that the electric elements of a low-pressure line-outgoing cable load current checkout gear of the present utility model connect schematic block diagram.
In figure: 1,400V low pressure cabinet; 2, low-voltage cabinet door; 3, master on off; 4, separating brake; 5, low-pressure line-outgoing cable; 6, low-pressure line-outgoing cable load current checkout gear; 61, current sensor; 62, sampling processor; 63, analog to digital converter; 64, digital processing unit; 65, light-emitting diode display; 7, cabinet detector is driven; 8, Switching Power Supply.
Embodiment
The utility model is made with reference to Fig. 1, Fig. 2.The low-voltage distribution cabinet of this low-pressure line-outgoing banded cable load current checkout gear, comprises 400V low pressure cabinet 1, low-voltage cabinet door 2, triple line A, B, C and master on off 3, triple line A, B, C and connects low-pressure line-outgoing cable 5 by separating brake 4; Described low-pressure line-outgoing cable 5 can connect 2-5 as required, even more, it is characterized in that: each described root low-pressure line-outgoing cable 5 is equipped with low-pressure line-outgoing cable load current checkout gear 6, the load current realizing simultaneously detecting many low-pressure line-outgoing cables by the low-pressure line-outgoing cable load current checkout gear 6 on each root detects; Each described low-pressure line-outgoing cable load current checkout gear 6 all connects B, C phase line by same Switching Power Supply 8, for each low-pressure line-outgoing cable load current checkout gear 6 provides power supply simultaneously; The rotation axis of low-voltage cabinet door 2 is provided with out cabinet detector 7, the detection of low-pressure line-outgoing cable load current is realized by driving cabinet detector 7, when low-voltage cabinet door 2 is opened, drive cabinet detector 7 and cabinet signal detected out, then wake the low-pressure line-outgoing cable load current checkout gear 6 being in holding state up, start work, carry out the calculating of current effective value, and shown by light-emitting diode display, enabling and Observable; When low-voltage cabinet door 2 is closed, this low-pressure line-outgoing cable load current checkout gear 6 is in holding state again, can reduce the electrical loss of this device like this.
As improvement of the present utility model: each described low-pressure line-outgoing cable load current checkout gear 6, includes current sensor 61, sampling processor 62, analog to digital converter 63, digital processing unit 64 and light-emitting diode display 65 and shell thereof; Same Switching Power Supply 8 is connected, by Switching Power Supply 8 simultaneously for the current sensor 61 in each low-pressure line-outgoing cable load current checkout gear 6, sampling processor 62, analog to digital converter 63, digital processing unit 64, light-emitting diode display 65 provide power supply after current sensor 61 in each described low-pressure line-outgoing cable load current checkout gear 6, sampling processor 62, analog to digital converter 63, digital processing unit 64 are in parallel with light-emitting diode display 65; Digital processing unit 64 in each described low-pressure line-outgoing cable load current checkout gear 6 is connected with same cabinet detector 7 of opening by wire; Light-emitting diode display 65 in each described low-pressure line-outgoing cable load current checkout gear 6 is all located on the antetheca of place shell; Current sensor 61 in each described low-pressure line-outgoing cable load current checkout gear 6 is all sleeved on corresponding low-pressure line-outgoing cable 5.
Described current sensor 61 is the current sensor of the open-close type based on Hall element or Luo-coil, is prior art, can directly buys.
Described sampling processor 62 comprises scale amplifying, voltage lifting, filtering and clamper four part, the signal becoming analog to digital converter 63 to accept the signal condition that current sensor 61 exports, analog signal is converted to digital signal by analog to digital converter 63, is also prior art.
Described digital processing unit 64 is the CPU of single-chip microcomputer, DSP, ARM and FPGA, adopt the core algorithm based on Second Order Generalized Integrator (SOGI)+FLL (FLL), carry out the calculating of current effective value, algorithm is strong to power frequency, amplitude adaptive ability, the sampling window length simultaneously needed is short, real-time is good, when power frequency, amplitude fluctuations, and still can calculating current effective value fast and accurately; The result of computing is shown by high-brightness LED display 65, is also prior art.
Described light-emitting diode display 65 adopts highlighted charactron, and numerical monitor is clear, is convenient to remote observation, is also prior art, can directly buys from the market.
Described Switching Power Supply 8 is one of power supply, has the advantage that energy consumption is low, rapid heat dissipation, output voltage range are large, can directly buy.
Claims (2)
1. the low-voltage distribution cabinet of low-pressure line-outgoing banded cable load current checkout gear, comprises 400V low pressure cabinet (1), low-voltage cabinet door (2), triple line A, B, C and master on off (3), and triple line A, B, C connect low-pressure line-outgoing cable (5) by separating brake (4); It is characterized in that: each described root low-pressure line-outgoing cable (5) is equipped with low-pressure line-outgoing cable load current checkout gear (6); Each described low-pressure line-outgoing cable load current checkout gear (6) all connects B, C phase line by same Switching Power Supply (8); The rotation axis of low-voltage cabinet door (2) is provided with out cabinet detector (7).
2. the low-voltage distribution cabinet of low-pressure line-outgoing banded cable load current checkout gear according to claim 1, it is characterized in that: each described low-pressure line-outgoing cable load current checkout gear (6), includes current sensor (61), sampling processor (62), analog to digital converter (63), digital processing unit (64) and light-emitting diode display (65) and shell thereof; Same Switching Power Supply (8) is connected after current sensor (61) in each described low-pressure line-outgoing cable load current checkout gear (6), sampling processor (62), analog to digital converter (63), digital processing unit (64) are in parallel with light-emitting diode display (65); Digital processing unit (64) in each described low-pressure line-outgoing cable load current checkout gear (6) is connected with same cabinet detector (7) of opening by wire; Light-emitting diode display (65) in each described low-pressure line-outgoing cable load current checkout gear (6) is all located on the antetheca of place shell; Current sensor (61) in each described low-pressure line-outgoing cable load current checkout gear (6) is all sleeved on corresponding low-pressure line-outgoing cable (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420584521.1U CN204156305U (en) | 2014-10-11 | 2014-10-11 | The low-voltage distribution cabinet of low-pressure line-outgoing banded cable load current checkout gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420584521.1U CN204156305U (en) | 2014-10-11 | 2014-10-11 | The low-voltage distribution cabinet of low-pressure line-outgoing banded cable load current checkout gear |
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| Publication Number | Publication Date |
|---|---|
| CN204156305U true CN204156305U (en) | 2015-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420584521.1U Withdrawn - After Issue CN204156305U (en) | 2014-10-11 | 2014-10-11 | The low-voltage distribution cabinet of low-pressure line-outgoing banded cable load current checkout gear |
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| Country | Link |
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| CN (1) | CN204156305U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104242079A (en) * | 2014-10-11 | 2014-12-24 | 国家电网公司 | Low-voltage power distribution cabinet provided with low-voltage outlet cables with load current detection devices |
| CN108155823A (en) * | 2017-06-12 | 2018-06-12 | 中国石油大学(华东) | Based on SOGI-FLL without dead zone half cycle modulator approach |
-
2014
- 2014-10-11 CN CN201420584521.1U patent/CN204156305U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104242079A (en) * | 2014-10-11 | 2014-12-24 | 国家电网公司 | Low-voltage power distribution cabinet provided with low-voltage outlet cables with load current detection devices |
| CN108155823A (en) * | 2017-06-12 | 2018-06-12 | 中国石油大学(华东) | Based on SOGI-FLL without dead zone half cycle modulator approach |
| CN108155823B (en) * | 2017-06-12 | 2019-12-24 | 中国石油大学(华东) | No-dead-zone half-cycle modulation method based on SOGI-FLL |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150211 Effective date of abandoning: 20160601 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |