CN209545130U - The measure and control device of passive tripping and Microcomputer Protection Combined Protection - Google Patents
The measure and control device of passive tripping and Microcomputer Protection Combined Protection Download PDFInfo
- Publication number
- CN209545130U CN209545130U CN201920476026.1U CN201920476026U CN209545130U CN 209545130 U CN209545130 U CN 209545130U CN 201920476026 U CN201920476026 U CN 201920476026U CN 209545130 U CN209545130 U CN 209545130U
- Authority
- CN
- China
- Prior art keywords
- protection
- circuit
- tripping
- current
- microcomputer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model discloses passive tripping and the measure and control devices of Microcomputer Protection Combined Protection, are related to passive current-release field, including protecting circuit and current-release protect circuit.The combination that the utility model is protected by Microcomputer Protection and current-release meets when without any work with control power supply, drives release electromagnet by short circuit current, realize quick trip protection；When power supply is normal, tripped by Microcomputer Protection, meanwhile, failure protection is played the role of in second tripping output of the current-release circuit of autonomous working as microcomputer short-circuit protection.The pure electronic circuit of control circuit realizes, not only ensure that quick action, but also interference rejection ability is strong, is also adapted to the biggish needs of curent change range；Release electromagnet only is controlled whether to be bypassed, and not will cause current loop open circuit.
Description
Technical field
The utility model relates to the current-releases of high-voltage circuitbreaker and voltage trip to protect field, in particular to passive tripping
And the measure and control device of Microcomputer Protection Combined Protection.
Background technique
Tripping mechanism is the important component for promoting to switch automatic trip in high-voltage circuitbreaker operating system, and breaker exists
Making process neutralization is when being in closing position, the effect of tripping mechanism like a power fulcrum, when breaker automatic trip,
Tripping mechanism is released this fulcrum by the manipulation of trip gear, makes breaker freedom of entry gate-dividing state.
The tripping mechanism of high-voltage circuitbreaker is routinely configured with voltage trip electromagnet and current-release electromagnet, any tripping
Electromagnet action can realize tripping.
Conventional Microcomputer Protection and controller is tripped by the tripping of voltage trip high-speed double electromagnet breaker, this
Tripping mode needs to provide tripping accessory power supply, controls for active tripping.Such single tripping wavy trajectory, is limited by auxiliary
The reliability of the mechanisms such as reliability and stability, the voltage trip electromagnet of power supply；To the terminal station institute for losing backup power supply, dash forward
When right power transmission, Microcomputer Protection is there are also power initiation and stabilization, microcontroller and data-signal processing carry out electrification reset, detection is transported
In the period that calculation etc. takes a long time, just Microcomputer Protection does not operate normally at the time of short circuit probability maximum, loses protection.But only with
The mode of passive tripping is also not easy to the advantage in conjunction with Microcomputer Protection, and current not reasonable protective device can be coordinated active
With passive Combined Protection mechanism.
Utility model content
The purpose of this utility model is that: provide two kinds of independent guarantors of passive current-release and Microcomputer Protection voltage trip
Shield tripping wavy trajectory and circuit solve the problems, such as that current Microcomputer Protection tripping mode is single, solve current voltage trip
The problem of accessory power supply is unreliable, voltage trip mechanism-trouble, Microcomputer Protection failure, solves current-release electromagnet initiation value
Inaccuracy, starting current are less than normal to cause malfunction, low current to start the problems such as strength is insufficient, while remaining the excellent of Microcomputer Protection
Point takes Microcomputer Protection and passive current-release to protect Combined Protection, plays the two advantage, mutually makes up the two disadvantage.
The technical solution adopted in the utility model is as follows:
It is passive tripping and Microcomputer Protection Combined Protection measure and control device, including protecting circuit, sampling electricity-getting mutual inductor,
Sample power-supply circuit, comparison circuit, driving circuit, exclusive circuit, control relay.
The sampling electricity-getting mutual inductor, sampling power-supply circuit, comparison circuit, driving circuit are sequentially connected electrically composition tripping and protect
Protection circuit, the driving circuit electrical connection exclusive circuit, control relay；
It further include tripping protection major loop, the tripping protection major loop includes the control relay being sequentially connected electrically
Device, external current transformer, external current-release electromagnet, internal sampling electricity-getting mutual inductor, the control relay
The investment of control current-release electromagnet crosses excision；
Tripping protection major loop and tripping protection circuit constitute current-release and protect circuit, by control relay,
Sampling electricity-getting mutual inductor is isolated；
The protecting circuit is connect with tripping protection circuit by exclusive circuit, the protecting circuit and tripping
Major loop is protected to pass through sampling electricity-getting mutual inductor electrical connection.
The control relay is normally closed node relay, and under normal circumstances, current transformer exports electric current, through controlling
The normally closed node of relay, then sampled electricity-getting mutual inductor constitute circuit.Because release electromagnet coil is by the normally closed section of control relay
Point bypass is shorted, therefore release electromagnet will not act.
Current transformer exports alternating current to be had to electricity-getting mutual inductor, sampled electricity-getting mutual inductor isolated variable output is sampled
There is the AC signal of power and voltage to power-supply circuit is sampled, sampled power-supply circuit linear transformation is voltage signal and limits width
The working power of value, working power is for comparison circuit, driving circuit, holding circuit, exclusive circuit, control relay as work
Power supply is used, and voltage signal is through comparison circuit compared with benchmark (representing current threshold), and comparison result gives driving circuit, in microcomputer
When non-latching while not working (including microcomputer), once the electric current for flowing through sampling electricity-getting mutual inductor is more than movement threshold value, then and it is more electric
Road output action signal amplifies the drive control actuating of relay through driving circuit, controls the normally closed node of relay to driving circuit
It disconnects, so that all electric currents is flowed through release electromagnet coil, release electromagnet movement, breaker closing fulcrum is removed in touch, in bullet
Under spring force effect, make operating mechanism separating brake.
When Microcomputer Protection works normally, it is also made even if controller by exclusive circuit locking control circuit
It not exporting, control relay is failure to actuate, only when microcomputer protecting device short-circuit protection acts separating brake, unlocking, at this moment such as
Fruit short circuit current is more than threshold value, and control circuit output control relay acts, and node disconnects, and all electric currents all flow through trip line
Circle, tripping coil movement, makes circuit breaker tripping separating brake by tripping coil electromagnetic force, this is just provided completely solely for Microcomputer Protection
The second trip(ping) circuit that is vertical and being not required to auxiliary excitation power supply, to realize the failure protection of Microcomputer Protection.
Further, the power supply of the tripping protection major loop and tripping protection circuit is derived from current loop, can disobey
Rely other any accessory power supplys.When guaranteeing no any power supply, short trouble such as occurs, can be threaded off and be jumped by release electromagnet
Lock guarantees the safety of power distribution network.
Further, the tripping protection major loop is independent operating relative to Microcomputer Protection with tripping protection circuit protection
, Microcomputer Protection does not work or does not influence its normal work when abnormal.
Further, the control circuit is also electrically connected with holding circuit.The effect of holding circuit is to keep control defeated
Stability out.Since the electric flux of driving relay is from electric current secondary loop, when the actuating of relay, on the one hand can make
Voltage pull-down, second at this moment electric current flow through the biggish release electromagnet of impedance ratio, electric current can decrease, to prevent relay from trembling
It is dynamic, one holding circuit with hesitation of design.
Further, the action current of the release electromagnet calculates according to actual needs, and the release electromagnet moves
Making electric current I to be determined by sample resistance resistance value R, i.e., sampling electricity-getting mutual inductor no-load voltage ratio N, sample resistance resistance value R, reference voltage V are determined,
I=NV/R.Experience action current 8A ± 0.5A meets most of power supplys for exchange or the more easy small distribution terminal of power supply
Protective value requirement.
Further, short circuit current rises to action value starting from 0, to release electromagnet actuation time less than 0.3 second.When
When short circuit current is bigger, actuation time is shorter, and when short circuit current is 1.5 times of action value, actuation time was less than 0.25 second.
In conclusion by adopting the above-described technical solution, the beneficial effects of the utility model are:
1, the measure and control device of the passive tripping of the utility model and Microcomputer Protection Combined Protection, passes through Microcomputer Protection and passive electrical
The combination of stream tripping protection meets when without any work with control power supply, drives release electromagnet by short circuit current, realize
Quick trip protection is tripped when power supply is normal by Microcomputer Protection；When microcomputer short-circuit protection trips failure, automatically switch
It threads off and trips to short circuit current.
2, the measure and control device of the passive tripping of the utility model and Microcomputer Protection Combined Protection, control circuit pass through pure electronics electricity
Road is realized, not only ensure that quick action, but also interference rejection ability is strong, is also adapted to the biggish needs of curent change range；Tripping electromagnetism
Iron only is controlled whether to be bypassed, and not will cause current loop open circuit.
3, the measure and control device of the passive tripping of the utility model and Microcomputer Protection Combined Protection, it is former to provide a kind of new protection
Reason, increases a protection control loop, avoids a variety of causes from causing tripping caused by Microcomputer Protection failure, greatly improve protection
Reliability is a kind of economic, reliable, safety protection scheme, it is ensured that the excision of short trouble prevents tripping, and has stringent
Faulty action preventing design.
Detailed description of the invention
The utility model will illustrate by example and with reference to the appended drawing, in which:
Fig. 1 is a kind of structural schematic diagram of embodiment of the utility model；
Fig. 2 is a kind of electrical schematic diagram of embodiment of the utility model.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only to explain this
Utility model is not used to limit the utility model, i.e., the described embodiments are only a part of the embodiments of the utility model,
Instead of all the embodiments.The component of the utility model embodiment being usually described and illustrated herein in the accompanying drawings can be with each
Different configurations is planted to arrange and design.
Therefore, requirement is not intended to limit to the detailed description of the embodiments of the present invention provided in the accompanying drawings below
The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Reality based on the utility model
Apply example, those skilled in the art's every other embodiment obtained without making creative work belongs to
The range of the utility model protection.
It should be noted that the relational terms of term first and second or the like are used merely to an entity or operation
It is distinguished with another entity or operation, without necessarily requiring or implying between these entities or operation, there are any this
Actual relationship or sequence.Moreover, term includes, includes or its any other variant is intended to the packet of nonexcludability
Contain, so that the process, method, article or equipment for including a series of elements not only includes those elements, but also including
Other elements that are not explicitly listed, or further include for elements inherent to such a process, method, article, or device.
In the absence of more restrictions, by sentence include one ... the element limited, it is not excluded that include element process,
There is also other identical elements in method, article or equipment.
It elaborates below with reference to Fig. 1, Fig. 2 to the utility model.
Embodiment 1
The measure and control device of the passive tripping of the utility model and Microcomputer Protection Combined Protection, including control relay, electric current are de-
Electromagnet is detained, the investment or excision of the control relay control current-release electromagnet further include tripping protection circuit, described
Tripping protection circuit includes the sampling electricity-getting mutual inductor being sequentially connected electrically, sampling power-supply circuit, comparison circuit, driving circuit, control
Relay processed；It further include tripping protection major loop, the tripping protection major loop includes the control relay being sequentially connected electrically
Device, external current transformer, external current-release electromagnet, internal sampling electricity-getting mutual inductor；The tripping protection master
Circuit and tripping protection circuit constitute current-release and protect circuit, are isolated by control relay, sampling electricity-getting mutual inductor；Also
Including protecting circuit, the protecting circuit is connect with tripping protection circuit by exclusive circuit, the Microcomputer Protection
Circuit is electrically connected with tripping protection major loop by sampling electricity-getting mutual inductor.
The utility model is applicable to the power supply high voltage breaker of high reliability or spare control loop short-circuit protection, special
It is not power supply for exchange or the more easy small distribution terminal of power supply, economic, reliable, safety protection scheme is provided, it is ensured that
The excision of short trouble prevents tripping, and has stringent faulty action preventing design.
Embodiment 2
The present embodiment is made that restriction further below on the basis of embodiment 1:
The power supply of the tripping protection major loop and tripping protection circuit is derived from current loop, and it is any can not depend on other
Accessory power supply.When guaranteeing no any power supply, short trouble such as occurs, can be threaded off and be tripped by release electromagnet, guarantee distribution
The safety of net.
Tripping protection major loop and tripping protection circuit protection can be with independent operatings, and the passive electric current of the utility model
Tripping protection is independent to be also understood to equivalent technical solution at embodiment or with the device that other protections combine.
The control circuit is also electrically connected with holding circuit.The effect of holding circuit is to keep the stabilization of control output
Property.Since the electric flux of driving relay is from electric current secondary loop, when the actuating of relay, on the one hand voltage can be made to draw
It is low, second at this moment electric current flow through the biggish release electromagnet of impedance ratio, electric current can decrease, to prevent relay flutter, if
One holding circuit with hesitation of meter.
The action current of the current-release electromagnet calculates according to actual needs, is joined by choosing corresponding sample resistance
Number determines.The action current I of release electromagnet is determined by sampling electricity-getting mutual inductor no-load voltage ratio N, sample resistance resistance value R, reference voltage V
It is fixed, I=NV/R.It is whole for exchange or the more easy small distribution of power supply that experience action current 8A ± 0.5A meets most of power supplys
The protective value requirement at end.
Short circuit current rises to action value starting from 0, to release electromagnet actuation time less than 0.3 second.Work as short circuit current
When bigger, actuation time is shorter, and when short circuit current is 1.5 times of action value, actuation time was less than 0.25 second.
The working process of the utility model is as follows: the combination protected by Microcomputer Protection and passive current-release meets in nothing
When any work and control power supply, release electromagnet is driven by short circuit current, realizes quick trip protection；When power supply is normal
When, it is tripped by Microcomputer Protection；When microcomputer short-circuit protection trips failure, threads off and trip automatically by short circuit current.
Wherein, electricity-getting mutual inductor had both obtained the size of electric current from current loop, also obtains enough electric fluxs, passes through sampling
Circuit conversion compares through comparison circuit, and when secondary current is greater than threshold value such as 8A, it is dynamic that control circuit output driving controls relay
Make, disconnect normally closed node, all electric currents is allowed to flow through release electromagnet, release electromagnet movement, breaker mechanism tripping tripping.
As shown in Fig. 2, the circuit is a kind of embodiment of the utility model, correlation performance parameters are as follows:
Passive trip action electric current: 8A ± 0.5A；
The passive trip action time: 0.2-0.3S, circuit intrinsic actuation time are also beneficial to escape excitation surge current, capacitor
Charging current etc.；
Microcomputer short-circuit protection failure, which is converted to passive drop-away time, to be defaulted are as follows: 0S, settable 0S~1.00S.
According to the above mechanism, no matter what is because making current-release line by short circuit current when protective device does not work normally
Circle movement, so that it is guaranteed that excision failure.
More than, only preferred embodiments of the present invention, but protection scope of the utility model is not limited thereto,
Anyone skilled in the art can be expected in the technical scope disclosed by the utility model without creative work
Change or replacement, should be covered within the scope of the utility model.Therefore, the protection scope of the utility model should
It is determined by the scope of protection defined in the claims.
Claims (6)
1. it is passive tripping and Microcomputer Protection Combined Protection measure and control device, including protecting circuit, sampling electricity-getting mutual inductor, take
Sample power-supply circuit, comparison circuit, driving circuit, exclusive circuit, control relay, it is characterised in that:
The sampling electricity-getting mutual inductor, sampling power-supply circuit, comparison circuit, driving circuit are sequentially connected electrically composition tripping protection electricity
Road, the driving circuit electrical connection exclusive circuit, control relay；
It further include tripping protection major loop, it includes the control relay being sequentially connected electrically that major loop is protected in the tripping, outer
The current transformer in portion, external current-release electromagnet, internal sampling electricity-getting mutual inductor, the control relay control electricity
Flow the investment or excision of release electromagnet；
The tripping protection major loop and tripping protection circuit constitute current-release and protect circuit, pass through control relay, sampling
Electricity-getting mutual inductor is isolated；
The protecting circuit is connect with tripping protection circuit by exclusive circuit, and the protecting circuit and tripping are protected
Major loop passes through sampling electricity-getting mutual inductor electrical connection.
2. the measure and control device of passive tripping according to claim 1 and Microcomputer Protection Combined Protection, it is characterised in that: described
The power supply of tripping protection major loop and tripping protection circuit is derived from current loop.
3. the measure and control device of passive tripping according to claim 1 or 2 and Microcomputer Protection Combined Protection, it is characterised in that:
The tripping protection major loop and tripping protection circuit independent operating.
4. the measure and control device of passive tripping according to claim 1 or 2 and Microcomputer Protection Combined Protection, it is characterised in that:
The driving circuit is also electrically connected with holding circuit.
5. the measure and control device of passive tripping according to claim 4 and Microcomputer Protection Combined Protection, it is characterised in that: described
The action current I of release electromagnet determines by sampling electricity-getting mutual inductor no-load voltage ratio N, sample resistance resistance value R, reference voltage V, I=NV/
R。
6. the according to claim 1, measure and control device of 2 and the 5 any passive trippings and Microcomputer Protection Combined Protection, feature
Be: current-release protects circuit protection actuation time less than 0.3 second.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920476026.1U CN209545130U (en) | 2019-04-10 | 2019-04-10 | The measure and control device of passive tripping and Microcomputer Protection Combined Protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920476026.1U CN209545130U (en) | 2019-04-10 | 2019-04-10 | The measure and control device of passive tripping and Microcomputer Protection Combined Protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209545130U true CN209545130U (en) | 2019-10-25 |
Family
ID=68276037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920476026.1U Active CN209545130U (en) | 2019-04-10 | 2019-04-10 | The measure and control device of passive tripping and Microcomputer Protection Combined Protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209545130U (en) |
-
2019
- 2019-04-10 CN CN201920476026.1U patent/CN209545130U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3259771B1 (en) | Circuit breaker and method for operation thereof | |
| AU2014309019B2 (en) | Fast Switch Fault Current Limiter and Current Limiter System | |
| EP3343715B1 (en) | Short-circuit failure current limiter | |
| CN101252055A (en) | Circuit breaker and opening and closing method thereof | |
| CN109494693A (en) | A kind of hybrid dc circuit breaker and control method reducing reclosing impact | |
| CN104821557B (en) | A kind of control loop of breaker operation cabinet | |
| CN106374419B (en) | A kind of method that metallurgy supply network quickly cuts off short circuit current | |
| CN105958437B (en) | Realize the control circuit of breaker decompression tripping in external circuit | |
| CN103943396B (en) | Circuit breaker operation loop | |
| CN110299702A (en) | Fault current discharge device, method and electric system with overcurrent protection | |
| CN104505805A (en) | Breaker operating circuit for medium voltage system | |
| CN209545130U (en) | The measure and control device of passive tripping and Microcomputer Protection Combined Protection | |
| CN208874279U (en) | A kind of improved breaker body unbalanced three-phase lines outlet loop | |
| KR20150031729A (en) | Fault current limiter with reclose fuction | |
| CN209562151U (en) | A kind of busbar voltage double protecting device based on vortex drive-type fast breaker | |
| CN107026428A (en) | A kind of anti-jump method of breaker | |
| CN109167264B (en) | Jump preventing device for circuit breaker in high-voltage switch cabinet | |
| CN206076914U (en) | A kind of combined mass circuit breaker system | |
| CN106159879B (en) | A kind of combined mass circuit breaker system | |
| CN104992887A (en) | Under-voltage tripping device for permanent magnetic actuator circuit breakers | |
| CN217326830U (en) | Transformer door control system and power supply and distribution system with same | |
| CN108695812A (en) | A kind of divide-shut brake monitoring device of air circuit breaker | |
| CN109672156A (en) | The electronic switch containing soft start and defencive function for direct-flow distribution system | |
| CN209434870U (en) | A kind of switching-off device driving high voltage flameproof switch | |
| CN113299525A (en) | Circuit breaker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |