CN105374640A - Breaker capable of hot plugging of controller, plugging method of controller and changing method of controller - Google Patents
Breaker capable of hot plugging of controller, plugging method of controller and changing method of controller Download PDFInfo
- Publication number
- CN105374640A CN105374640A CN201510860722.9A CN201510860722A CN105374640A CN 105374640 A CN105374640 A CN 105374640A CN 201510860722 A CN201510860722 A CN 201510860722A CN 105374640 A CN105374640 A CN 105374640A
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- Prior art keywords
- controller
- circuit
- circuit breaker
- mode
- connector block
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/08—Terminals; Connections
Abstract
The present invention discloses a breaker capable of hot plugging of a controller. The breaker comprises an energy taking circuit, a voltage detection circuit, a controller, a tripping unit and a plug-in part. The energy taking circuit is configured to extract electric energy from the major loop protected by the breaker to supply for the controller, the voltage detection circuit is configured to detect the voltage of the major loop, and the tripping unit is configured to complete the tripping motion according to tripping signals emitted by the controller; the energy taking circuit, the voltage detection circuit and a tripping driving circuit are in pluggable electric connection with the controller through the plug-in part; the breaker also comprises a working mode setting unit configured to set the normal working mode or plugging mode of the controller; and the controller located in the normal mode is able to realize complete a protection function and located in the plugging mode has a tripping signal output port located in a blocking state without the output of the tripping signals. Compared with the prior art, the structure is simpler, the implementation cost is lower, and the safe reliability is better.
Description
Technical field
The present invention relates to a kind of circuit breaker, particularly relate to a kind of circuit breaker of hot-pluggable controller, belong to low-voltage electrical technical field.
Background technology
In recent years, obtain development along with distribution is intelligent, the intelligence degree of low-voltage circuit breaker also improves constantly, and the circuit breaker of band intelligent controller is applied to every field more and more widely.Intelligent controller realizes the core component of the functions such as various measurement, protection as circuit breaker; its importance is self-evident, therefore, in intelligent breaker During Process of Long-term Operation; need regularly comprehensively to check intelligent controller, safeguard, to ensure intelligent controller reliably working.In addition, when hydraulic performance decline or operation irregularity appear in intelligent controller, also should overhaul in time, change.At present, when maintenance, replacing intelligent controller, circuit breaker first must cut off main circuit current, avoid when unloading intelligent controller because misoperation causes circuit breaker misoperation, and produce high pressure when avoiding instrument transformer secondary side to open a way, cause device damage, time serious, go back the personal safety of entail dangers to operating personnel.
At present some producers be proposed can the circuit breaker of charged for replacement controller, utilizing the plug-in connector of particular design, realize controller and be electrically connected with the pluggable of other parts of circuit breaker, the replacing of controller can be carried out when not cutting off main circuit current.Realize this function, need to solve following several respects problem: the first, in the swapping process of controller, controller should be avoided to send the trip signal of mistake to separating brake actuator, thus cause the misoperation of separating brake actuator, affect the normal power supply of major loop.The second, at present a large amount of intelligent breakers all makes Current Transformer from major loop, extract electric energy to supply controller use, in controller swapping process, produce high pressure during the open circuit of Current Transformer Secondary side to have an impact to equipment and even personal safety, therefore need to avoid this situation to produce.In addition, for some circuit breaker, it utilizes divider resistance etc. to carry out voltage sample detection with the circuit that major loop directly contacts, and also should prevent in controller swapping process, and the high voltage that voltage detecting circuit produces is on the impact of equipment or personal safety.
Be all the mechanical structure by particular design when prior art solves the problem, in controller withdrawal process, first make separating brake actuator loop disconnect, then make current transformer and instrument transformer protective device connect, finally disconnect all secondary circuits; Otherwise in inserting controller process, first connect all secondary circuits, then make current transformer and instrument transformer protective device disconnect, last Zai Shi separating brake actuator loop is connected.The charged safety that such scheme no doubt can realize controller is changed, but also comes with some shortcomings.From above-mentioned analysis, in order to prevent issuable brake separating mechanism misoperation in controller swapping process, prior art is by pulling out at controller, being inserted through in journey, separating brake actuator loop is disconnected/connects, this mode must need in separating brake actuator loop, arrange gate-controlled switch parts and corresponding connection, like this, the switch block increased on the one hand and corresponding wiring can reduce the security reliability of whole circuit breaker system; On the other hand, the increase in the increase of circuit breaker cost and shared space can also be brought.
Summary of the invention
Technical problem to be solved by this invention is to overcome prior art deficiency, provides a kind of circuit breaker of hot-pluggable controller, and its structure is simpler, realize cost lower, and security reliability is better.
The present invention specifically solves the problems of the technologies described above by the following technical solutions:
The circuit breaker of the hot-pluggable controller of the present invention, comprising: get energy circuit, voltage detecting circuit, controller, trip unit, connector block; Described getting can extract electric energy supply controller for the major loop protected from circuit breaker by circuit, and described voltage detecting circuit is used for detecting the voltage of major loop, and the trip signal that described trip unit is used for sending according to controller completes trip action; Get and circuit, voltage detecting circuit, dropout drive circuit can realize pluggable electrical connection via described connector block and controller; This circuit breaker also comprises the mode of operation setting unit being in normal mode or plug pattern for arranging controller; Described controller is configured to can realize complete defencive function in the normal mode, and under plug pattern, its trip signal output port is in the blocking that cannot export trip signal.
Further; described circuit breaker also comprises the first protection mechanism; the state that described first protection mechanism can insert connector block completely at controller is ordered to get and can be normally connected with controller by circuit, and orders to get energy short circuit in the state that controller non-fully inserts connector block.
Further, described circuit breaker also comprises the second protection mechanism, and the state can inserting connector block completely at controller is ordered voltage detecting circuit conducting, and to order voltage detecting circuit open circuit in the state that controller non-fully inserts connector block.
Preferably, described mode of operation setting unit is the man-machine interaction unit or mode selection switch that are connected with described controller.
Further, described circuit breaker also comprises alarm module, for sending alarm signal when described controller is under plug pattern.
As above the controller plug method of circuit breaker described in arbitrary technical scheme, comprises the following steps:
Step 1, by mode of operation setting unit, controller is set to plug pattern;
Step 2, controller to be extracted from described connector block;
Step 3, controller is inserted in described connector block;
Step 4, by mode of operation setting unit, controller is set to normal mode.
As above the controller replacing options of circuit breaker described in arbitrary technical scheme, comprises the following steps:
Step 1, by mode of operation setting unit, controller is set to plug pattern;
Step 2, controller to be extracted from described connector block;
Step 3, insert in described connector block by new controller, this new controller is pre-arranged as plug pattern;
Step 4, by mode of operation setting unit, new controller is set to normal mode.
Compared to existing technology, the present invention has following beneficial effect:
Present invention achieves the warm swap of breaker controller, do not need to disconnect main circuit current, on subordinate's load without impact;
The present invention is by the adjustment to controller inside, solve issuable brake separating mechanism misoperation in controller swapping process from source, do not need to increase extra switch block and corresponding wiring, therefore structure is simpler, realize cost lower, and security reliability is better.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing trip unit;
Fig. 2 is theory diagram of the present invention;
Fig. 3 is a kind of concrete structure of circuit breaker of the present invention;
Fig. 4 is the fit structure schematic diagram of controller and pedestal;
Fig. 5 is base construction schematic diagram;
Fig. 6 is the circuit theory diagrams of the trip unit in the present embodiment;
Fig. 7 is the circuit theory diagrams getting rectification circuit in energy circuit;
Fig. 8 be by man-machine interaction unit, mode of operation is set interface is set;
Fig. 9 is the schematic diagram being arranged mode of operation by DIP switch.
In figure, each label implication is as follows:
1, controller, 2, pedestal, 3, breaker body, 4, current transformer, 11, contact component, 12, controller attachment plug, 13, controller bayonet socket, 21, the socket that is connected with current transformer and rectification circuit, 22, the socket be connected with controller, 23, keyset, 24, normally closed sensitive switch, 25, voltage detecting circuit, 26, often drive sensitive switch, 27, trip unit.
Embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is described in detail:
Thinking of the present invention improves for the circuit breaker of existing hot-pluggable controller, set up a plug pattern in the controller, trip signal output port is carried out locking by controller in this mode, thus issuable release misoperation in controller swapping process is prevented from source, save circuit components and circuit breaker internal space on the one hand, improve security reliability on the other hand.
Fig. 1 shows the basic structure of existing trip unit, as shown in the figure, and it release comprising dropout drive circuit, power-switching circuit and be connected with major loop.Power supply exports electric energy and supply dropout drive circuit after power-switching circuit conversion, and when controller sends trip signal to dropout drive circuit, dropout drive circuit drives release to perform trip action, thus realizes the disconnection of major loop.When warm swap controller, release misoperation in swapping process, prior art realizes threading off in more changer controller process and perform loop by connecting switch linked with swapping process in the loop of trip unit and remain open state, and after controller inserts completely, thread off and perform loop conducting.Adopt this scheme, need in trip unit, increase at least one switch block, add corresponding wiring, add on the one hand and take up room and hardware cost, more parts and wiring also bring the reduction of reliability on the other hand.
And the present invention solves the general principle of release misoperation problem as shown in Figure 2.Except can realizing the normal mode of complete defencive function; for a plug pattern set up by controller; the trip signal output port of controller is in blocking in this mode, and namely this port cannot send trip signal, and other defencive functions of controller are identical with under normal mode.Like this, as long as under swapping process middle controller is in plug pattern, can ensures from source that trip unit can not misoperation, and not need additionally to increase any switch block and respective gut.Mode of operation setting unit can be utilized to arrange to the conversion realizing controller two kinds of patterns, the man-machine interaction unit (such as button and operation display interface) that mode of operation setting unit carries by controller is arranged, and the mode selection switch also by configuring separately is arranged.
In order to prevent the high pressure getting energy circuit in controller swapping process, voltage detecting circuit produces, equipment and personal safety are impacted, the present invention circuit and voltage detecting circuit can arrange protection mechanism respectively for getting further, get and the protection mechanism of the circuit state that can insert connector block completely at controller can order to get and can normally be connected with controller by circuit, and to order to get energy short circuit in the state that controller non-fully inserts connector block; And the state that the protection mechanism of voltage detecting circuit can insert connector block completely at controller is ordered voltage detecting circuit conducting, and to order voltage detecting circuit open circuit in the state that controller non-fully inserts connector block.
For the ease of public understanding, with a preferred embodiment, technical scheme of the present invention is described in detail below.
The circuit breaker of the present embodiment as shown in Figure 3, comprise connect major loop breaker body 3, from major loop, obtain signal and the current transformer 4 of electric energy, the pedestal 2 be connected with breaker body, the intelligent controller 1 that is connected with pedestal.Intelligent controller in the present embodiment comprises MCU unit, display unit, mode of operation setting unit.
As shown in Figure 4, Figure 5, pedestal 2 comprises a keyset 23, trip unit 27, this keyset 23 is provided with the socket be connected with current transformer 4 and rectification circuit 21, socket 22, the normally closed sensitive switch 24 be connected with controller, voltage detecting circuit 25, three often drive sensitive switch 26.The secondary side signal of current transformer exports, rectification circuit exports, trip unit is connected to the socket 22 be connected with controller, socket 22 can realize plug type with controller attachment plug 12 and be connected, the second energy of current transformer exports and is connected to the socket and rectification circuit 21 that are connected with current transformer, the output of rectification circuit connects a normally closed sensitive switch 24, often drive sensitive switch 26 to be connected with voltage detecting circuit 25, the drive rod of sensitive switch 24,26 contacts with the contact component 11 be fixed on intelligent controller 1.
Described intelligent controller comprises at least two kinds of mode of operations, and mode of operation one is the normal mode of regular circuit breakers intelligent controller, the i.e. normal mode of operation of omnipotent breaker, can realize complete defencive function; Mode of operation two is for changing intelligent controller pattern, i.e. the plug mode of operation of omnipotent breaker, and in such a mode, intelligent controller locking trip signal output port, makes it cannot export trip signal and drive trip unit action, prevent circuit breaker misoperation.Mode of operation setting unit can set the mode of operation of circuit breaker.
When intelligent controller changed by needs, by mode of operation setting unit, the mode of operation of intelligent controller is set to plug pattern, now circuit breaker intelligent controller display unit plugs mode indicating lamp bright, represent that now intelligent controller is in plug mode of operation, intelligent controller temporarily can not control breaker open operation.By intelligent controller bayonet socket 13 along the relevant position pull-out on circuit breaker, the contact component 11 of intelligent controller is separated with the drive rod often driving sensitive switch 26, sensitive switch 26 inner contact is disconnected, intelligent controller and voltage input circuit are disconnected, avoids the danger caused by high pressure when changing intelligent controller.Meanwhile, contact component 11 is separated with normally closed sensitive switch 24 drive rod, and sensitive switch 24 inner contact is closed, and by the output short-circuit of energy currents instrument transformer, avoids because open circuit makes output produce high pressure.And then intelligent controller attachment plug 12 is separated completely with the gang socket 22 in pedestal, completes the process of being extracted from circuit breaker by intelligent controller.
Another is in the intelligent controller of plug pattern (as being only carry out Inspection and maintenance to controller, be then former intelligent controller) bayonet socket 13 along on circuit breaker relevant position insert circuit breaker, when intelligent controller gang socket 12 contacts completely with the gang socket 22 in pedestal, contact component 11 and the drive rod reliable contacts often driving sensitive switch 26 of described intelligent controller, and drive rod is pressed, sensitive switch 26 inner contact is closed, connect intelligent controller and voltage input circuit, ensure that intelligent controller is to the monitoring of main circuit voltage.Simultaneously contact component 11 also with normally closed sensitive switch 24 drive rod reliable contacts, sensitive switch 24 inner contact is disconnected, and now, intelligent controller is as the load of energy currents instrument transformer.So far, described intelligent controller attachment plug 12 completes with the gang socket 22 in pedestal and docks, and completes the process that described intelligent controller is connected with circuit breaker simultaneously.
After described intelligent controller is connected completely with circuit breaker, the mode of operation of described intelligent controller is set to normal mode, normal operation of circuit breaker.
As shown in Figure 6, its operation principle is the circuit theory of the trip unit in the present embodiment: when MCU_I/O mouth exports high level, and triode V1 conducting drives magnetic flow convertor L1 action; When MCU_I/O mouth output low level, triode V1 ends, and magnetic flow convertor L1 is failure to actuate.R1 is current-limiting resistance, and R2, C1 form RC filter, and D1 is fly-wheel diode.When controller is set to plug mode of operation, trip signal output port is in blocking, and now MCU_I/O mouth remains low level, and triode V1 ends always, magnetic flow convertor L1 can not action, thus avoids in more changer controller process because misoperation causes circuit breaker misoperation.
The circuit theory of rectification circuit in energy circuit is got as shown in Figure 7, P1 in the present embodiment, P2, P3 respectively with A, B, the output of C phase energy instrument transformer is connected, and X1 ~ X3 is connector, P1, P2, P3 respectively with connector X1, X2, X3 is connected, and VD1 ~ VD8 forms three-phase bridge rectifier circuit, first output of connector X1, first output of connector X2, be connected with the positive pole of diode VD2 with the negative pole of diode VD1 after first output of connector X3 links together, second output of connector X1 and diode VD3 negative pole, diode VD4 positive pole links together, second output of connector X2 and diode VD5 negative pole, diode VD6 positive pole links together, second output of connector X3 and diode VD7 negative pole, diode VD8 positive pole links together, the positive pole of diode VD1, the positive pole of diode VD3, the positive pole of diode VD5, the positive pole of diode VD7 altogether, and is connected with one end of normally closed sensitive switch, the negative pole of diode VD2, the negative pole of diode VD4, the negative pole of diode VD6, be connected with the other end of normally closed sensitive switch after the negative pole of diode VD8 connects jointly.。
What Fig. 8 showed that the man-machine interaction unit carried by intelligent controller arranges controller mode of operation arranges interface.When needs carry out mode of operation arrange time, operation control button, makes it enter mode of operation and arranges interface, as Fig. 8, when having square frame outside " normal mode " character, represents that this Time Controller is in normal mode of operation; Operation push-button is selected " plug pattern " pattern and is preserved again, and now square frame moves to outside " plug pattern " character, represents that controller is in plug mode of operation.
Also can be realized controller mode of operation to arrange by the mode selection switch arranged separately, as shown in Figure 9, when DIP switch is allocated to black region, represent that this Time Controller is in normal mode of operation; When DIP switch is allocated to white portion, represent that this Time Controller is in plug mode of operation.
Claims (10)
1. the circuit breaker of hot-pluggable controller, comprising: get energy circuit, voltage detecting circuit, controller, trip unit, connector block; Described getting can extract electric energy supply controller for the major loop protected from circuit breaker by circuit, and described voltage detecting circuit is used for detecting the voltage of major loop, and the trip signal that described trip unit is used for sending according to controller completes trip action; Get and circuit, voltage detecting circuit, dropout drive circuit can realize pluggable electrical connection via described connector block and controller; It is characterized in that, this circuit breaker also comprises the mode of operation setting unit being in normal mode or plug pattern for arranging controller; Described controller is configured to can realize complete defencive function in the normal mode, and under plug pattern, its trip signal output port is in the blocking that cannot export trip signal.
2. circuit breaker as claimed in claim 1; it is characterized in that; also comprise the first protection mechanism; the state that described first protection mechanism can insert connector block completely at controller is ordered to get and can be normally connected with controller by circuit, and orders to get energy short circuit in the state that controller non-fully inserts connector block.
3. circuit breaker as claimed in claim 2, is characterized in that, described first protection mechanism comprise one be parallel to described in get can sensitive switch in circuit, and to be fixedly installed on controller and with the contact component of described sensitive switch mechanical couplings; Described contact component is configured to: under the state that controller inserts connector block completely, and described sensitive switch is turned off, and under the state of controller non-fully insertion connector block, described sensitive switch is closed.
4. circuit breaker as claimed in claim 2; it is characterized in that; described circuit breaker also comprises the second protection mechanism, and the state can inserting connector block completely at controller is ordered voltage detecting circuit conducting, and to order voltage detecting circuit open circuit in the state that controller non-fully inserts connector block.
5. circuit breaker as claimed in claim 4, it is characterized in that, described second protection mechanism comprises a sensitive switch be series in described voltage detecting circuit, and to be fixedly installed on controller and with the contact component of described sensitive switch mechanical couplings; Described contact component is configured to: under the state that controller inserts connector block completely, and described sensitive switch is closed, and under the state of controller non-fully insertion connector block, described sensitive switch is turned off.
6. circuit breaker as claimed in claim 1, it is characterized in that, described mode of operation setting unit is the man-machine interaction unit or mode selection switch that are connected with described controller.
7. circuit breaker as claimed in claim 1, it is characterized in that, described circuit breaker also comprises alarm module, for sending alarm signal when described controller is under plug pattern.
8. circuit breaker as claimed in claim 1, is characterized in that, described in get and can comprise the current transformer be connected with major loop by circuit, and the rectification circuit be connected with the secondary side output of described current transformer.
9. the controller plug method of circuit breaker as described in any one of claim 1 ~ 8, is characterized in that, comprise the following steps:
Step 1, by mode of operation setting unit, controller is set to plug pattern;
Step 2, controller to be extracted from described connector block;
Step 3, controller is inserted in described connector block;
Step 4, by mode of operation setting unit, controller is set to normal mode.
10. the controller replacing options of circuit breaker as described in any one of claim 1 ~ 8, is characterized in that, comprise the following steps:
Step 1, by mode of operation setting unit, controller is set to plug pattern;
Step 2, controller to be extracted from described connector block;
Step 3, insert in described connector block by new controller, this new controller is pre-arranged as plug pattern;
Step 4, by mode of operation setting unit, new controller is set to normal mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510860722.9A CN105374640B (en) | 2015-12-01 | 2015-12-01 | Breaker and its controller plug of hot-pluggable controller, replacing options |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510860722.9A CN105374640B (en) | 2015-12-01 | 2015-12-01 | Breaker and its controller plug of hot-pluggable controller, replacing options |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105374640A true CN105374640A (en) | 2016-03-02 |
| CN105374640B CN105374640B (en) | 2017-08-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510860722.9A Active CN105374640B (en) | 2015-12-01 | 2015-12-01 | Breaker and its controller plug of hot-pluggable controller, replacing options |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114023592A (en) * | 2021-11-08 | 2022-02-08 | 河南华盛隆源电气有限公司 | High-voltage circuit breaker |
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| CN105374640B (en) | 2017-08-08 |
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