CN207304000U - A kind of switchgear alternating electromotive force input protector - Google Patents
A kind of switchgear alternating electromotive force input protector Download PDFInfo
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- CN207304000U CN207304000U CN201721000624.9U CN201721000624U CN207304000U CN 207304000 U CN207304000 U CN 207304000U CN 201721000624 U CN201721000624 U CN 201721000624U CN 207304000 U CN207304000 U CN 207304000U
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Abstract
The utility model proposes a kind of switchgear alternating electromotive force input protector, including input signal pretreatment module, dsp processor module and output control module.It is analyzed by parameters such as the phase signal of the voltage and current signal to switchgear inputing power, phase sequential signal, voltage signal, frequency signal, zero sequence current signal, power supply continuities and is judged in advance, input stage utility power quality control is provided, when inputing power is off quality, cut-out electric energy input in real time, to ensure the next stage equipment qualification of switchgear by electricity, so as to improve power quality of the switchgear to next stage equipment.
Description
Technical field
Electronic technology field is the utility model is related to, more particularly to a kind of switchgear alternating electromotive force input protector.
Background technology
At present, as the development of Power Electronic Technique, more and more nonlinear-load power equipments come into operation, cause
The deterioration of power quality, for sensitive load, power quality difference may result in equipment operation irregularity or damage, influence to give birth to
Production and safety.People propose the continuity and reliability of power supply the requirement of higher.
As power input, switchgear plays folding, control in electric system power generation, transmission of electricity, distribution and electric energy conversion
The important function of system and protection electrical equipment.Input and protect for switchgear at present, generally protected using breaker, fuse negative
Carry, detection device transfers data to this scheme of monitoring distant place backstage.Such as Publication No. CN106229948A, patent name
For：A kind of Intelligent switch cabinet control device, disclosed Intelligent switch cabinet control device include switchgear and with the switchgear
The power distribution protective device of connection, the power distribution protective device include controller, and the controller is connected with short-circuit protector, described
Controller determines the prospective short circuit current of power supply unit according to the parameter of power equipment, and the short-circuit protector monitors electric power in real time
The operation short circuit current flow of equipment, when the operation short circuit current flow of monitoring reaches prospective short circuit current, and short circuit duration is pre- beyond first
If during threshold value, shown by display, and the power supply of short-circuit protector cut-out power equipment.But it can not be solved
The problem of certainly may result in equipment operation irregularity or damage because of power quality difference.
The content of the invention
The technical problems to be solved in the utility model is：A kind of switchgear alternating electromotive force input protector is provided, it can
To improve power quality of the switchgear to next stage equipment.
What the solution of the utility model was realized in：A kind of switchgear alternating electromotive force input protector, including：
Input signal pretreatment module, for gathering the voltage and current signal of inputing power, and by the voltage of collection and
Current signal transfer is to dsp processor module；
Dsp processor module, is connected with input signal pretreatment module, for receiving the input signal pretreatment module
The voltage and current signal of collection, and the voltage and current signal of collection is analyzed, judge whether signal value belongs to default
It is worth scope, and control signal is formed according to judging result；
Output control module, is connected with dsp processor module, for receiving the control signal of dsp processor module, and root
The switch of switchgear is controlled according to control signal.
Another technical solution of the utility model is that on above-mentioned basis the switchgear alternating electromotive force input is protected
Device further includes CAN communication module, is connected with dsp processor module, for by the data transfer of dsp processor module to upper
Machine.
Another technical solution of the utility model is that on above-mentioned basis the input signal pretreatment module includes
Input signal sample circuit, correcting circuit and signal conditioning circuit.
Another technical solution of the utility model is that on above-mentioned basis the dsp processor module is included at DSP
Manage device, external clock and reset circuit.
Another technical solution of the utility model is that on above-mentioned basis the output control module is believed according to control
Number the input air of switchgear switch, pre-on switch, main electric switch and relay protection switch are controlled.
As can be seen from the above technical solutions, the utility model embodiment has the following advantages：
In embodiment provided by the utility model, a kind of switchgear alternating electromotive force input protector is proposed, it passes through
To the phase signal of the voltage and current signal of switchgear inputing power, phase sequential signal, voltage signal, frequency signal, zero sequence electricity
The parameters such as stream signal, power supply continuity are analyzed and judged in advance, there is provided input stage utility power quality control, in inputing power quality
When unqualified, electric energy input is cut off in real time, to ensure the next stage equipment qualification of switchgear by electricity, so as to improve switchgear under
The power quality of first device.
Brief description of the drawings
The attached drawing for forming the part of the utility model is used to provide a further understanding of the present invention, this practicality is new
The schematic description and description of type is used to explain the utility model, does not form the improper restriction to the utility model.
Fig. 1 is the control module structure of switchgear alternating electromotive force input protector in a kind of embodiment of the utility model
Schematic diagram；
Fig. 2 is the governor circuit figure of switchgear alternating electromotive force input protector in a kind of embodiment of the utility model；
Fig. 3 is the work flow diagram of switchgear alternating electromotive force input protector in a kind of embodiment of the utility model.
In figure：
1 input signal pretreatment module, 2 dsp processor module, 3 output control module
4 CAN communication module, 5 host computer
Embodiment
The utility model is described in detail below in conjunction with the accompanying drawings, the description of this part be only it is exemplary and explanatory,
There should not be any restriction effect to the scope of protection of the utility model.In addition, those skilled in the art's retouching according to this document
State, respective combination can be carried out to the feature in embodiment in this document and in different embodiments.
Term " first " in the specification and claims of the utility model and above-mentioned attached drawing, " second ", " the 3rd "
(if present)s such as " the 4 " is for distinguishing similar object, without for describing specific order or precedence.Should
The data that the understanding so uses can exchange in the appropriate case, so as to the embodiment of the utility model described herein, example
As can be implemented with the order in addition to except illustrating or describing herein.In addition, term " comprising " and " having " and
Their any deformation, it is intended that cover it is non-exclusive include, for example, containing the process of series of steps or unit, side
Method, system, product or equipment are not necessarily limited to those steps clearly listed or unit, but may include not list clearly
Or for the intrinsic other steps of these processes, method, product or equipment or unit.The example of the embodiment is in the accompanying drawings
Show, wherein same or similar label represents same or similar element or has the function of same or like member from beginning to end
Part.The embodiments described below with reference to the accompanying drawings are exemplary, is only used for explaining the utility model, and it is not intended that right
The limitation of the utility model.On the contrary, the embodiment of the utility model includes the spirit and intension for falling into attached claims
In the range of all changes, modification and equivalent.The description of this part be only it is exemplary and explanatory, should not be to the utility model
Protection domain have any restriction effect.In addition, description of the those skilled in the art according to this document, can be in this document
Feature in embodiment and in different embodiments carries out respective combination., it is necessary to illustrate in the description of the utility model,
Unless otherwise clearly defined and limited, term " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected,
Can be detachably connected, or be integrally connected；Can mechanically connect or be electrically connected；It can be directly connected,
It can be indirectly connected by intermediary.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
Concrete meaning of the language in the utility model.In addition, in the description of the utility model, unless otherwise indicated, " multiples' " contains
Justice is two or more.Described otherwise above any process or method description in flow chart or herein it is understood that
To represent the mould for including the code of the executable instruction of one or more the step of being used for realization specific logical function or process
Block, fragment or part, and the scope of the preferred embodiment of the utility model includes other realization, wherein institute can not be pressed
The order for showing or discussing, including according to involved function by it is basic at the same time in the way of or in the opposite order, to perform work(
Can, this should be understood by the embodiment person of ordinary skill in the field of the utility model.
The utility model embodiment is as follows, as shown in Figure 1, a kind of switchgear alternating electromotive force input protector, including：
Input signal pretreatment module 1, for gathering the voltage and current signal of inputing power, and by the voltage of collection and
Current signal transfer is to dsp processor module 2；
Dsp processor module 2, is connected with input signal pretreatment module 1, for receiving the input signal pretreatment mould
The voltage and current signal that block 1 gathers, and the voltage and current signal of collection is analyzed, judge whether signal value belongs to pre-
If being worth scope, and control signal is formed according to judging result；
Output control module 3, is connected with dsp processor module 2, for receiving the control signal of dsp processor module 2,
And the switch of switchgear is controlled according to control signal.
On the basis of above-described embodiment, in another embodiment of the utility model, the switchgear alternating electromotive force input is protected
Protection unit further includes CAN communication module 4, is connected with dsp processor module 2, for by the data transfer of dsp processor module 2
To host computer 5.
On the basis of above-described embodiment, in another embodiment of the utility model, the input signal pretreatment module 1 is wrapped
Include input signal sample circuit, correcting circuit and signal conditioning circuit.
On the basis of above-described embodiment, in another embodiment of the utility model, the dsp processor module 2 includes DSP
Processor, external clock and reset circuit.
On the basis of above-described embodiment, in another embodiment of the utility model, as shown in Fig. 2, the output control mould
Root tuber switchs the input air switch QK1 of switchgear, pre-on switch MK1, main electric switch MK1 and relay protection according to control signal
MA1 is controlled.Wherein, input air switch QK1 is connected with pre-on switch MK1 in advance, pre-on switch and main electric switch
MC1, output control module 3 connect, and main electric switch MC1 and pre-on switch MK1, relay protection switch MA1, output control module 3 connect
Connect, relay protection switch is connected with main electric switch MC1 gateways token QK1, emergency stop control EMC.
On the basis of above-described embodiment, in another embodiment of the utility model, as shown in figure 3, being the utility model institute
The work flow diagram for the switchgear alternating electromotive force input protector stated, first start reset control its, then according to following step
Rapid operation：
S01, is loaded into unit by electrical network parameter, gathers the voltage signal and current signal of input AC electricity；
S02, judge the phase signal of the voltage signal and current signal, phase sequential signal, voltage signal, frequency signal,
Whether at least one in the parameters such as zero sequence current signal, power supply continuity be in values；
S03, when step S02 judges that parameter is in values, then judges that the AC energy of input is qualified, sends and connect
Logical pre-on switching signal；When step S02 judges parameter not in values, then the voltage of input AC electricity is resurveyed
Signal and current signal are detected.
Preferably, further included in the step S03 and judge that N lines whether there is and whether zero-sequence current meets to preset
Value, if N lines exist and zero-sequence current meets preset value, sends and connects pre-on switching signal；Otherwise, input is resurveyed to hand over
The voltage signal and current signal of galvanic electricity are detected.
Preferably, further included in the step S03 judge in preset time input AC whether continuously smooth without
Intermittently power, pre-on switching signal is connected if so, then sending；Otherwise, resurvey input AC electricity voltage signal and
Current signal is detected.
Preferably, after the step S03, step S04 is further included, judges whether main electric back off timer overflows,
If main electricity back off timer overflows, judge that pre-on switch has been turned on reaching the defined time, connect main electric switch；If main electricity
Back off timer does not overflow, then recalls to and continue to judge whether main electric back off timer overflows.
Preferably, after the step S04, step S05 is further included, it is different more than 10ms whether detection power grid occurs
Often, if occurring more than the exception of 10ms, then it is assumed that power grid power quality is undesirable, then disconnects pre-on switch and master establishes by cable
Close, forbid pre-on switch access；Otherwise, the control signal of relay protection switch connection is sent.
Preferably, after the step S05, step S06 is further included, whether detection load current exceeds threshold value, if
Load current exceeds threshold value, then controls relay protection to switch off by relay protection chain control module, and pre-on switch is forbidden accessing.
Preferably, after the step S06, step S07 is further included, whether detection scram button is triggered, judges
Whether there is exterior emergency, if it is not, then judging power grid power quality qualification, start gateway token QT1, can normally supply
Electricity, the output of AC electric power；If so, then control relay protection switches off, pre-on switch is forbidden accessing.
As can be seen from the above technical solutions, the utility model embodiment has the following advantages：
In embodiment provided by the utility model, a kind of switchgear alternating electromotive force input protector is proposed, it passes through
To the phase signal of the voltage and current signal of switchgear inputing power, phase sequential signal, voltage signal, frequency signal, zero sequence electricity
The parameters such as stream signal, power supply continuity are analyzed and judged in advance, there is provided input stage utility power quality control, in inputing power quality
When unqualified, electric energy input is cut off in real time, to ensure the next stage equipment qualification of switchgear by electricity, so as to improve switchgear under
The power quality of first device.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these improve and
Retouching also should be regarded as the scope of protection of the utility model.
Claims (5)
- A kind of 1. switchgear alternating electromotive force input protector, it is characterised in that including：Input signal pretreatment module, for gathering the voltage and current signal of inputing power, and by the voltage and current of collection Signal transmission is to dsp processor module；Dsp processor module, is connected with input signal pretreatment module, for receiving the input signal pretreatment module collection Voltage and current signal, and the voltage and current signal of collection is analyzed, judges whether signal value belongs to preset value model Enclose, and control signal is formed according to judging result；Output control module, is connected with dsp processor module, for receiving the control signal of dsp processor module, and according to control Signal processed is controlled the switch of switchgear.
- 2. switchgear alternating electromotive force input protector according to claim 1, it is characterised in that the switchgear exchange Electric power input protective device further includes CAN communication module, is connected with dsp processor module, for by the number of dsp processor module According to being transmitted to host computer.
- 3. switchgear alternating electromotive force input protector according to claim 2, it is characterised in that the input signal is pre- Processing module includes input signal sample circuit, correcting circuit and signal conditioning circuit.
- 4. switchgear alternating electromotive force input protector according to any one of claim 1 to 3, it is characterised in that institute Stating dsp processor module includes dsp processor, external clock and reset circuit.
- 5. switchgear alternating electromotive force input protector according to any one of claim 1 to 3, it is characterised in that institute Output control module is stated to open the input air switch of switchgear, pre-on switch, main electric switch and relay protection according to control signal Pass is controlled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721000624.9U CN207304000U (en) | 2017-08-10 | 2017-08-10 | A kind of switchgear alternating electromotive force input protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721000624.9U CN207304000U (en) | 2017-08-10 | 2017-08-10 | A kind of switchgear alternating electromotive force input protector |
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| Publication Number | Publication Date |
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| CN207304000U true CN207304000U (en) | 2018-05-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107248733A (en) * | 2017-08-10 | 2017-10-13 | 湖南利能科技股份有限公司 | A kind of switch cubicle alternating electromotive force input protector and method |
-
2017
- 2017-08-10 CN CN201721000624.9U patent/CN207304000U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107248733A (en) * | 2017-08-10 | 2017-10-13 | 湖南利能科技股份有限公司 | A kind of switch cubicle alternating electromotive force input protector and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210122 Address after: 411100 No.28 Baishi Road, Jingkai District, Xiangtan City, Hunan Province Patentee after: WASION ELECTRIC Co.,Ltd. Address before: 410205 No. 468, west slope, Tongzi high tech Development Zone, Hunan, Changsha Patentee before: HUNAN LINENG TECHNOLOGY Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 411100 No.28 Baishi Road, Jingkai District, Xiangtan City, Hunan Province Patentee after: Weisheng Energy Technology Co.,Ltd. Address before: 411100 No.28 Baishi Road, Jingkai District, Xiangtan City, Hunan Province Patentee before: WASION ELECTRIC Co.,Ltd. |