CN202423180U - Control device for closing coil of breaker - Google Patents
Control device for closing coil of breaker Download PDFInfo
- Publication number
- CN202423180U CN202423180U CN2012200151900U CN201220015190U CN202423180U CN 202423180 U CN202423180 U CN 202423180U CN 2012200151900 U CN2012200151900 U CN 2012200151900U CN 201220015190 U CN201220015190 U CN 201220015190U CN 202423180 U CN202423180 U CN 202423180U
- Authority
- CN
- China
- Prior art keywords
- voltage
- transistor
- node
- resistor
- control device
- 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.)
- Expired - Lifetime
Links
Images
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The utility model relates to a control device used for a closing coil of a breaker of an electric power system. An external voltage source is input to the control device to form a positive voltage and a negative voltage after filtering rectification, the negative voltage is grounded, and a first circuit, a second circuit and a third circuit are connected between the positive voltage and the negative voltage in parallel. The first circuit comprises a resistor, a diode and a first voltage regulator tube connected in series with one another, a first capacitor is connected with the first voltage regulator tube in parallel, and a first voltage is formed at a node between the diode and the first voltage regulator tube. The second circuit comprises a first resistor, a second resistor and a second transistor connected in series with one another, a base electrode of the first transistor is connected to a connection node of an emitting electrode of the second transistor and the second resistor, the emitting electrode of the first transistor is connected to the other connection node of the second resistor, the collecting electrode of the first transistor is connected to the base electrode of the second transistor, the first voltage is input to the base electrode of the second transistor after voltage dividing, and the node between the first resistor and the second resistor is a node B. The third circuit comprises the closing coil and a third transistor connected in series with each other, the node B is connected to the base electrode of the third transistor, and the node B is grounded through a second voltage regulator tube and a second capacitor connected in parallel with each other.
Description
Technical field
The utility model relates to the closing coil of the circuit breaker in the electric power system.Particularly, the control device that relates to a kind of closing coil of the circuit breaker that is used for electric power system.
Background technology
In electrical power distribution system, use the switch such as air circuit usually, this is a kind of control apparatus of more complicated.Air circuit has kinds of protect functions such as short circuit, overload, decompression, electric shock and earth leakage protective.The closed and disconnected of air circuit depends on its outside accessory-closing coil, switching winding and the corresponding control device of the two.
Closing coil is to be used to use the accessory of external voltage source from remote location control breaker closing.Circuit breaker has the regular hour to require for the operate time of divide-shut brake coil, and this also is an important indicator of circuit breaker parameters examination, general closing time＜100ms, and opening time＜60ms.
Usually closing coil comprises two parts: electronic section and mechanical part.The voltage of external voltage source is input in the electronic section with control mechanical part close circuit breaker through rectification, delay circuit.Requirement to the closing line coil component preferably can be low in continuous operation under the wide-voltage range and power consumption.Also promptly, after the feed motion of circuit breaker was accomplished, the electric current on the closing coil was more little good more.
Traditional closing coil is processed by solenoid; After continuing to power up the feed motion of accomplishing circuit breaker on it; If because long-range switch knob fault is locked or the switching signal duration is long; Closing coil can continue to flow through big electric current, and this has greatly damaged the useful life of closing coil, and directly burns closing coil.Usually the operating voltage demand that satisfies 0.85Un (Un representes rated voltage) of traditional closing coil is damaged under the overpressure situation of 1.1Un easily.Operating voltage range is narrower.。
Therefore; The control device that needs a kind of closing coil of the circuit breaker that be used for electric power system; Make this closing coil can in AC or DC wide-voltage range, accomplish the normal breaker switching-on action and can be under this operating voltage for a long time; And do not expend too much power, prolonged the useful life of closing coil.With low cost and the volume of the device of retentive control simultaneously is less.
The utility model content
The purpose of this utility model is the control device for the closing coil that a kind of circuit breaker that is used for electric power system is provided.Make this closing coil can in AC or DC wide-voltage range, accomplish the normal breaker switching-on action and also can be in for a long time under this operating voltage, and do not expend too much power, prolonged the useful life of closing coil.With low cost and the volume of the device of retentive control simultaneously is less.Has antijamming capability, reliability service in the industrial environment of various complicacies.
One side according to the utility model; A kind of control device of closing coil of the circuit breaker that is used for electric power system is provided, and the voltage of external voltage source is input to this control device via input, forms positive and negative voltage through filtering, rectification afterwards; Negative voltage ground connection is characterized in that:
After rectification, be parallel with three loops between the positive and negative voltage:
First loop comprises resistor, diode, first voltage-stabiliser tube that is connected in series successively, is parallel with first capacitor with first voltage-stabiliser tube; Node place between diode, first voltage-stabiliser tube forms first voltage;
Second loop comprises first resistor, second resistor and the transistor seconds that is connected in series successively; The base stage of the first transistor is connected on the connected node of emitter and second resistor of transistor seconds; The emitter of the first transistor is connected on another connected node of second resistor; The collector electrode utmost point of the first transistor is connected to the base stage of transistor seconds; First voltage is input to the base stage of transistor seconds via the dividing potential drop of resistor, and the node at the base stage place of transistor seconds is called node A, and the node between first resistor, second resistor is called Node B;
Tertiary circuit comprises closing coil and the 3rd transistor that is connected in series, and the closing coil two ends are parallel with absorption diode, and Node B is connected to the base stage of mosfet transistor, and Node B is via second voltage-stabiliser tube, the second capacitor grounding end of parallel connection.
Wherein, external voltage source is AC or dc voltage source.
Wherein, after powering on, produce the voltage of 10V on second voltage-stabiliser tube earlier, after postponing a period of time, be pulled down to 0.7V.
Wherein, said time of delay is greater than the closing time of circuit breaker, and confirmed by resistance value, the capacitance of the first resistance in circuit device, capacitor.
Wherein, be 80mS said time of delay.
Wherein, the back first voltage-stabiliser tube voltage stabilizing that powers on is at 5V voltage, and node A rises until 0.7V from voltage 0V at the place gradually.
Wherein, the first transistor is a PNP transistor, and transistor seconds is a NPN transistor, and the 3rd transistor is a NPN type mosfet transistor.
Description of drawings
Through below in conjunction with the detailed description of accompanying drawing, will understand the utility model better to example embodiment.It should be clearly understood that described example embodiment only is as explanation and example, and the utility model is not limited thereto.Spirit of the utility model and scope are limited the particular content of appended claims.Brief description of drawings is described below, wherein:
Fig. 1 shows the schematic diagram according to the control device of the closing coil of the circuit breaker that is used for electric power system of the utility model;
Fig. 2 is the voltage waveform of ordering according to A in the schematic diagram of the control device of the closing coil of the circuit breaker that is used for electric power system of the utility model of Fig. 1;
Fig. 3 is the voltage waveform of ordering according to B in the schematic diagram of the control device of the closing coil of the circuit breaker that is used for electric power system of the utility model of Fig. 1;
Fig. 4 be Fig. 1 according to closing coil C voltages at nodes waveform in the schematic diagram of the control device of the closing coil of the circuit breaker that is used for electric power system of the utility model.
Embodiment
Referring now to the schematic diagram of accompanying drawing 1 detailed introduction according to the control device of the closing coil of the circuit breaker that is used for electric power system of the utility model.
Among Fig. 1, the voltage in external AC or dc voltage source is input to this control device via input IN1, IN2.Be parallel with varistor RV1 between input IN1, the IN2, pass through the filter filtering of forming by R1, R2, C4, C5 afterwards, then by rectifier bridge BR1 rectification.After rectification, be parallel with three loops between the positive and negative voltage: loop 1, loop 2, loop 3.Negative voltage ground connection after the rectification.
Loop 1 comprises resistor R 3, voltage-stabiliser tube D1, resistor R 4, resistor R 5, diode D2, the voltage-stabiliser tube D4 that is connected in series successively, and voltage-stabiliser tube D4 is parallel with the ripple of capacitor C1 with the node place between filtering diode D2, the voltage-stabiliser tube D4.
The node at the base stage place of NPN transistor is called node A.
Node between resistor R 9, the R10 is called Node B.
Loop 3 comprises closing coil C and the NPN type mosfet transistor T3 that is connected in series, and the closing coil two ends are parallel with absorption diode D6, are parallel with voltage-stabiliser tube Z1, the Z4 of the series connection that is used to protect between the source-drain electrode of transistor T 3.Node B is connected to the base stage of transistor T 3, and Node B is via voltage-stabiliser tube D5, the capacitor C3 earth terminal of parallel connection.
In the making process of circuit breaker, power at first for this control device, promptly connect external voltage source, this moment, loop 1,2 supplied power simultaneously.But the voltage-stabiliser tube D5 in loop 2 produces the voltage about 10V earlier, and the 10V at the gate node B place of transistor T 3 makes transistor T 3 closures.There is electric current to flow through loop 3 like this, closing coil C energising.The mechanical part action of closing coil makes circuit breaker carry out feed motion.
At this moment, loop 1 is owing to there is RC circuit control delay time, rises until voltage-stabiliser tube D4 voltage stabilizing till 5V voltage from voltage 0V gradually in the node place that powers between back diode D2, the voltage-stabiliser tube D4.
The 5V voltage at the node place between diode D2, the voltage-stabiliser tube D4 charges via the dividing potential drop of resistor R 6, R7 and to capacitor C2 subsequently; Approximately make the base stage of transistor T 2 reach that (that is, rise until about about 0.7V from voltage 0V gradually in node A place about about 0.7V after the delay through for example 80mS.), make transistor T 2 closures, make transistor T 1 closure simultaneously.Wherein the delay of 80mS is just given an example, and the closing time that generally only is larger than circuit breaker gets final product, and can adjust this delay time according to concrete circuit breaker parameters.
This moment, feasible level with Node B was pulled down to 0.7V owing to the closure of transistor T 1, T2.Transistor T 3 turn-offs like this.At this moment loop 3 does not have electric current to flow through, closing coil C dead electricity.The feed motion of circuit breaker is accomplished.
After this closing coil and control device thereof are operated in lower state, under the situation that does not have to cut off at the power supply of combined floodgate control loop.Be that the breaker closing action is accomplished, but the current supply circuit of closing coil and control device thereof keep power supply always.Loop 1,2 has Weak current to flow through always, consumes on the power device resistance of control device.
The control device of the utility model can be used for controlling the action of closing coil of accessory of the circuit breaker of for example air circuit (ABC) as in the electrical power distribution system and so on.The control device of the utility model makes this closing coil can in AC or DC wide-voltage range, accomplish normal breaker switching-on action and can be in for a long time under this operating voltage, and does not expend too much power, has prolonged the useful life of closing coil.With low cost and the volume of the device of retentive control simultaneously is less.Wherein be used for " switching force " that produces based on closing coil as long as enough make breaker closing; Wherein be used for " switching force " (being the electric current that control flows is crossed coil C) based on the closing coil generation; As long as enough make breaker closing; The AC or the dc voltage that are applied to this moment on the control device are minimum available voltage 0.85Un, can cooperate the coil impedance computation to go out the needed minimum current of closing coil.Can confirm through test.
Fig. 2-4 show Fig. 1 according to node A, B, closing coil C voltages at nodes oscillogram in the schematic diagram of the control device of the closing coil of the circuit breaker that is used for electric power system of the utility model.The control procedure that above-mentioned oscillogram has been shown clearly in more according to the control device of the utility model.Wherein Fig. 2 is the voltage waveform according to node A in the schematic diagram of the control device of the closing coil of the circuit breaker that is used for electric power system of the utility model of Fig. 1; Fig. 3 is the voltage waveform according to Node B in the schematic diagram of the control device of the closing coil of the circuit breaker that is used for electric power system of the utility model of Fig. 1; Fig. 4 be Fig. 1 according to closing coil C voltages at nodes waveform in the schematic diagram of the control device of the closing coil of the circuit breaker that is used for electric power system of the utility model.
Though illustrated and described the example embodiment of the utility model of being considered; But it will be appreciated by those skilled in the art that; Along with development of technology, can make various changes and revise and can replace its element and not deviate from the true scope of the utility model with equivalent.
Claims (7)
1. the control device of the closing coil of a circuit breaker that is used for electric power system, the voltage of external voltage source is input to this control device via input (IN1, IN2), forms positive and negative voltage through filtering, rectification afterwards, and negative voltage ground connection is characterized in that:
After rectification, be parallel with three loops between the positive and negative voltage:
First loop (1) comprises resistor, diode, first voltage-stabiliser tube that is connected in series successively, is parallel with first capacitor with first voltage-stabiliser tube; Node place between diode, first voltage-stabiliser tube forms first voltage;
Second loop (2) comprises first resistor, second resistor and the transistor seconds (T2) that is connected in series successively; The base stage of the first transistor (T1) is connected on the connected node of emitter and second resistor of transistor seconds; The emitter of the first transistor is connected on another connected node of second resistor; The collector electrode utmost point of the first transistor (T1) is connected to the base stage of transistor seconds; First voltage is input to the base stage of transistor seconds via the dividing potential drop of resistor, and the node at the base stage place of transistor seconds is called node A, and the node between first resistor, second resistor is called Node B;
Tertiary circuit (3) comprises closing coil and the 3rd transistor that is connected in series, and the closing coil two ends are parallel with absorption diode, and Node B is connected to the 3rd transistorized base stage, and Node B is via second voltage-stabiliser tube, the second capacitor grounding end of parallel connection.
2. control device as claimed in claim 1 is characterized in that: external voltage source is AC or dc voltage source.
3. control device as claimed in claim 1 is characterized in that: after powering on, produce the voltage of 10V on second voltage-stabiliser tube earlier, after postponing a period of time, be pulled down to 0.7V.
4. control device as claimed in claim 3 is characterized in that: said time of delay is greater than the closing time of circuit breaker, and confirmed by resistance value, the capacitance of the first resistance in circuit device, capacitor.
5. control device as claimed in claim 3 is characterized in that: be 80mS said time of delay.
6. control device as claimed in claim 1 is characterized in that: the back first voltage-stabiliser tube voltage stabilizing that powers on is at 5V voltage, and node A rises until 0.7V from voltage 0V at the place gradually.
7. control device as claimed in claim 1 is characterized in that: the first transistor is a PNP transistor, and transistor seconds is a NPN transistor, and the 3rd transistor is a NPN type mosfet transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200151900U CN202423180U (en) | 2012-01-13 | 2012-01-13 | Control device for closing coil of breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200151900U CN202423180U (en) | 2012-01-13 | 2012-01-13 | Control device for closing coil of breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202423180U true CN202423180U (en) | 2012-09-05 |
Family
ID=46747915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200151900U Expired - Lifetime CN202423180U (en) | 2012-01-13 | 2012-01-13 | Control device for closing coil of breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202423180U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103869241A (en) * | 2014-03-31 | 2014-06-18 | 国网上海市电力公司 | HD4 breaker switch bridging circuit |
-
2012
- 2012-01-13 CN CN2012200151900U patent/CN202423180U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103869241A (en) * | 2014-03-31 | 2014-06-18 | 国网上海市电力公司 | HD4 breaker switch bridging circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102013802B (en) | BOOST circuit with short circuit protection function | |
| CN105322810B (en) | Power conversion device and protection method thereof when current feedback signal is abnormal | |
| CN109342973B (en) | Direct current power supply input state monitoring circuit and system | |
| CN101242090A (en) | Over-voltage protector | |
| CN103095104A (en) | Gate Driver | |
| CN105144580A (en) | Semiconductor device | |
| CN103280765A (en) | Overvoltage protection circuit | |
| US20180019584A1 (en) | Leakage current detection and protection device | |
| CN104022634A (en) | Energy-storage capacitor type high-voltage and low-voltage surge suppression circuit and suppression method thereof | |
| CN203456389U (en) | Relay driving circuit | |
| CN103633616B (en) | A kind of current foldback circuit | |
| CN103457472A (en) | Switching power supply and lamp applying same | |
| CN102064681A (en) | Switch power supply output overvoltage protection circuit | |
| CN202423180U (en) | Control device for closing coil of breaker | |
| CN210985660U (en) | Anti-reverse-filling circuit | |
| CN107123575B (en) | Power consumption control circuit of electric operating mechanism of circuit breaker | |
| CN105471233A (en) | AC power supply transient interruption triggering device | |
| CN102711323B (en) | LED lamp drive circuit | |
| CN105308814A (en) | Surge current suppression circuit | |
| CN208835729U (en) | A kind of power-switching circuit with counnter attack connection function, integrated circuit | |
| CN108711918A (en) | A kind of switched charge circuit | |
| CN209805697U (en) | Single live wire power supply circuit | |
| CN103424715A (en) | Lamp testing circuit and device | |
| CN203520060U (en) | Controller of AC/DC electric contact instrument | |
| CN103378847A (en) | Binary input circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120905 |