CN206041477U - Power system protection device - Google Patents
Power system protection device Download PDFInfo
- Publication number
- CN206041477U CN206041477U CN201620749612.5U CN201620749612U CN206041477U CN 206041477 U CN206041477 U CN 206041477U CN 201620749612 U CN201620749612 U CN 201620749612U CN 206041477 U CN206041477 U CN 206041477U
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- protection
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- circuit
- relay
- controlling switch
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Abstract
The utility model discloses a power system protection device, include: the time lagged type open circuit protection circuit, negative temperature coefficient thermistor, control switch, the protection circuit opens circuit, the relay is connected with computer type relay protection integrated measurement and control device, computer type relay protection integrated measurement and control device includes CPU chip control ware, wireless transmitter, wireless receiver, voltage measurement device, current measuring device, temperature -sensing ware, in the carrier roller device, when short -circuit fault takes place for switching device, quick type opens circuit protection device and also can in time break off in order to avoid surge current to cause impact damage to other part devices, the protection characteristic with the electric system has been promoted comprehensively, the not enough of current electric power protection device has been overcome, computer type relay protection integrated measurement and control device has formed one and has fused the protection, measure, control, functions such as the communication device of being in the same place, realize unattendedly, requirements such as distant place operation, practice thrift the place in order finally to reach, economize on the use of funds.
Description
Technical field
This utility model belongs to technical field of electric power, more particularly to a kind of electric system protection device.
Background technology
In modern power systems, generally individually there is substantial amounts of capacitive load, as the initial voltage of electric capacity is zero, therefore electricity consumption
System can cause huge surge current in start-up course to capacitor fast charging, to electric power system and electricity system itself
Huge harm can be produced, or even surge current can cause part of devices to burn, and cause product failure.
The surge current brought for suppressing booting moment capacitive load to charge, general traditional straightforward procedure is in input line
Go here and there a negative tempperature coefficient thermistor NTC in road, in fact, the effect of NTC limit inrush currents is limited, particularly system compared with
When working under high-temperature, so the broken circuit protecting equipment that system input is typically selected is time lagged type (break type slowly), to avoid
Surge current during normal startup makes broken circuit protecting equipment misoperation.But due to switching device equiva lent impedance is minimum and also be difficult and
When disconnect (such as relay maximum turn-off time up to 10ms even more highs), so short-circuit current is limited due to no NTC
Stream is general huge, and often when short trouble occurs in system, action is too late for broken circuit protecting equipment to cause time lagged type (break type slowly)
When, cause electric power system single-stage or multi-staged air switch trip, directly influence the life and production of people.Particularly in communication
The field such as machine room or cloud computing, due to the machine room power-off that power module failure is caused it is not rarely seen, to enterprise and terminal use with
Carry out huge economic loss.
The content of the invention
The purpose of this utility model is to provide a kind of electric system protection device, it is intended to solve present protecting electrical power system
, as switching device equiva lent impedance is minimum and is difficult to disconnect in time, short-circuit current is general due to no NTC current limlitings for device
Huge, often when short trouble occurs in system, action not in time, causes electric power system to cause time lagged type broken circuit protecting equipment
The problem of single-stage or multi-staged air switch trip.
This utility model is achieved in that
A kind of electric system protection device, the electric system protection device include：Time lagged type breaking protection circuit, negative temperature
Coefficient resistance, controlling switch, breaking protection circuit；
The time lagged type breaking protection circuit includes fuse, and the input of the fuse is connected with electric power system, institute
The outfan for stating fuse is connected with the input of the negative tempperature coefficient thermistor respectively, negative tempperature coefficient thermistor
Outfan is connected with the input of controlling switch；The outfan of the controlling switch is connected with the input of breaking protection circuit.
Further, the breaking protection circuit includes special fast type fusing type electric fuse and capacitive load, special fast type fusing type
The input of electric fuse is connected with the outfan of the controlling switch, and outfan and the capacitive of the express fusing type electric fuse are born
Carry connection.
Further, the controlling switch be relay, the relay be connected with microcomputer type relay protection comprehensive control dress
Put, the microcomputer type relay protection comprehensive control device includes cpu chip, wireless transmitter, wireless receiver, voltage measurement dress
Put, current measuring device, temperature inductor；The wireless transmitter, wireless receiver, voltage measuring apparatus, current measurement dress
Put, temperature inductor is connected with cpu chip.
Further, the voltage measuring apparatus, current measuring device are connected with time lagged type breaking protection circuit, temperature sense
Device is answered to be connected with negative tempperature coefficient thermistor.
Microcomputer type relay protection comprehensive control device of the present utility model has excellent performance, convenient in high-voltage fence
Operation and strike fire into the people's hearts in being simply maintained in power system, high-performance, the CPU of low value and peripheral components superior performance and valency
Lattice are suitable, are suitable for very much the relay protection products of distribution, and CPU powerful note calculates ability outside relay protection function is completed, also
Have more ability to go to process the function that completes of other device, wireless transmitter, wireless receiver, voltage measuring apparatus,
Current measuring device, the addition of temperature inductor define the functions such as fusion protection, measurement, control, a communication together
Microcomputer type relay protection comprehensive control device, in this device, traditional boundary is disappeared, only the combination of remaining function, and
Actually for defencive function, larger development is also obtained, be more suitable for the guard method of distribution.There is such synthesis
Device, people are had reason requirement completely and install on the spot to save cable, simplify control room, or even realize unattended, distant place behaviour
Work etc. requires, saves place to be finally reached, save fund, labor-saving purpose；Microcomputer type relay of the present utility model is protected
Shield comprehensive control device has the wider temperature range of adaptation, tolerates stronger electromagnetic radiation and interference level, with higher
Self-inspection and mutually inspection ability.
The electric system protection device that this utility model is provided, when switching device is short-circuited failure, Quick-type open circuit
Protection device can also disconnects in time to avoid surge current from impacting damage to other parts device, General Promotion electricity consumption
The protection feature of system, overcomes the deficiency of existing electric protection device.
Description of the drawings
Fig. 1 is the electric system protection device structural representation that this utility model embodiment is provided.
In figure：1st, time lagged type breaking protection circuit；2nd, negative tempperature coefficient thermistor；3rd, controlling switch；4th, open circuit protection
Circuit；5th, microcomputer type relay protection comprehensive control device.
Specific embodiment
In order that the purpose of this utility model, technical scheme and advantage become more apparent, with reference to embodiments, to this
Utility model is further elaborated.It should be appreciated that specific embodiment described herein is only to explain this practicality
It is new, it is not used to limit this utility model.
1 pair of application principle of the present utility model is further described below in conjunction with the accompanying drawings.
A kind of electric system protection device, the electric system protection device include：Time lagged type breaking protection circuit 1, subzero temperature
Degree coefficient resistance 2, controlling switch 3, breaking protection circuit 4；
The time lagged type breaking protection circuit 1 includes fuse, and the input of the fuse is connected with electric power system, institute
The outfan for stating fuse is connected with the input of the negative tempperature coefficient thermistor 2 respectively, negative tempperature coefficient thermistor
Outfan be connected with the input of controlling switch 3；The outfan of the controlling switch 3 is connected with the input of breaking protection circuit
Connect.
The breaking protection circuit 4 includes special fast type fusing type electric fuse and capacitive load, special fast type fusing type electric fuse
Input be connected with the outfan of the controlling switch, the outfan of the express fusing type electric fuse is connected with capacitive load
Connect.
The controlling switch is relay 3, and the relay is connected with microcomputer type relay protection comprehensive control device 5, institute
State microcomputer type relay protection comprehensive control device 5 include cpu chip, wireless transmitter, wireless receiver, voltage measuring apparatus,
Current measuring device, temperature inductor；The wireless transmitter, wireless receiver, voltage measuring apparatus, current measuring device,
Temperature inductor is connected with cpu chip.
The voltage measuring apparatus, current measuring device are connected with time lagged type breaking protection circuit, temperature inductor with
Negative tempperature coefficient thermistor connects.
Microcomputer type relay protection comprehensive control device of the present utility model has excellent performance, convenient in high-voltage fence
Operation and strike fire into the people's hearts in being simply maintained in power system, high-performance, the CPU of low value and peripheral components superior performance and valency
Lattice are suitable, are suitable for very much the relay protection products of distribution, and CPU powerful note calculates ability outside relay protection function is completed, also
Have more ability to go to process the function that completes of other device, wireless transmitter, wireless receiver, voltage measuring apparatus,
Current measuring device, the addition of temperature inductor define the functions such as fusion protection, measurement, control, a communication together
Microcomputer type relay protection comprehensive control device, in this device, traditional boundary is disappeared, only the combination of remaining function, and
Actually for defencive function, larger development is also obtained, be more suitable for the guard method of distribution.There is such synthesis
Device, people are had reason requirement completely and install on the spot to save cable, simplify control room, or even realize unattended, distant place behaviour
Work etc. requires, saves place to be finally reached, save fund, labor-saving purpose；Microcomputer type relay of the present utility model is protected
Shield comprehensive control device has the wider temperature range of adaptation, tolerates stronger electromagnetic radiation and interference level, with higher
Self-inspection and mutually inspection ability.
The electric system protection device that this utility model is provided, when switching device is short-circuited failure, Quick-type open circuit
Protection device can also disconnects in time to avoid surge current from impacting damage to other parts device, General Promotion electricity consumption
The protection feature of system, overcomes the deficiency of existing electric protection device.
System start-up moment is to disconnect due to controlling switch, and surge current obtains effectively limiting without leading to by NTC
Cross Quick-type broken circuit protecting equipment and cause protection misoperation, after the completion of startup, controlling switch is connected, and operating current is directly by control
System switch and Quick-type breaking protection circuit bypass, due to controlling switch and Quick-type breaking protection circuit equiva lent impedance it is minimum,
Therefore both limited surge current and also eliminated impacts of the NTC to conversion efficiency.Meanwhile, if short trouble occurs in system, instantaneously
Short circuit current Quick-type breaking protection circuit can be made to disconnect in time, the peak value of short-circuit current can be obtained effectively by NTC
Suppress, time lagged type (slowly break type) broken circuit protecting equipment in this case can effective action, due to short-circuit current peak value simultaneously
It is not high, cause the probability of the multistage tripping operation of air switch of electric power system to avoid, the method is simple and reliable, increase it is quick
Type broken circuit protecting equipment can be express fusing type electric fuse etc., with low cost, can be widely applied to various in productive life
In electrical equipment.
In this utility model, when switching device is short-circuited failure, Quick-type broken circuit protecting equipment can also be timely
Disconnect to avoid surge current from impacting damage to other parts device, the General Promotion protection feature of electricity system, gram
The deficiency of existing electric protection device is taken.
Preferred embodiment of the present utility model is the foregoing is only, it is not to limit this utility model, all at this
Any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in this utility model
Protection domain within.
Claims (1)
1. a kind of electric system protection device, it is characterised in that the electric system protection device includes：Time lagged type open circuit protection electricity
Road, negative tempperature coefficient thermistor, controlling switch, breaking protection circuit；
The time lagged type breaking protection circuit includes fuse, and the input of the fuse is connected with electric power system, described molten
The outfan of disconnected device is connected with the input of the negative tempperature coefficient thermistor respectively, the output of negative tempperature coefficient thermistor
End is connected with the input of controlling switch；The outfan of the controlling switch is connected with the input of breaking protection circuit；
The breaking protection circuit includes special fast type fusing type electric fuse and capacitive load, the input of special fast type fusing type electric fuse
End is connected with the outfan of the controlling switch, and the outfan of the express fusing type electric fuse is connected with capacitive load；
The controlling switch is relay, and the relay is connected with microcomputer type relay protection comprehensive control device, the microcomputer
Type relay protection comprehensive control device includes cpu chip, wireless transmitter, wireless receiver, voltage measuring apparatus, current measurement
Device, temperature inductor；The wireless transmitter, wireless receiver, voltage measuring apparatus, current measuring device, temperature sense
Device is connected with cpu chip；
The voltage measuring apparatus, current measuring device are connected with time lagged type breaking protection circuit, temperature inductor and subzero temperature
Degree coefficient resistance connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620749612.5U CN206041477U (en) | 2016-07-15 | 2016-07-15 | Power system protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620749612.5U CN206041477U (en) | 2016-07-15 | 2016-07-15 | Power system protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206041477U true CN206041477U (en) | 2017-03-22 |
Family
ID=58311197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620749612.5U Expired - Fee Related CN206041477U (en) | 2016-07-15 | 2016-07-15 | Power system protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206041477U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113359904A (en) * | 2021-06-21 | 2021-09-07 | 武汉光迅科技股份有限公司 | Heating control unit and device |
-
2016
- 2016-07-15 CN CN201620749612.5U patent/CN206041477U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113359904A (en) * | 2021-06-21 | 2021-09-07 | 武汉光迅科技股份有限公司 | Heating control unit and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170322 Termination date: 20170715 |