CN215578418U - Novel circuit breaker energy storage control circuit - Google Patents
Novel circuit breaker energy storage control circuit Download PDFInfo
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- CN215578418U CN215578418U CN202122104594.9U CN202122104594U CN215578418U CN 215578418 U CN215578418 U CN 215578418U CN 202122104594 U CN202122104594 U CN 202122104594U CN 215578418 U CN215578418 U CN 215578418U
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Abstract
The utility model relates to a novel energy storage control loop of a circuit breaker, which comprises two first time relays KTA1 and KTA2 which are connected in parallel, wherein one end of the circuit breaker is connected with an energy storage mechanism travel switch SL1 after the circuit breaker is connected in parallel, and the other end of the circuit breaker is connected with the cathode of a control power supply after the circuit breaker is connected in parallel; one end of the energy storage mechanism travel switch SL1 is connected with the first time relays KTA1 and KTA2 which are connected in parallel, and the other end of the energy storage mechanism travel switch SL1 is connected with the anode of the control power supply; the energy storage motor controller is connected with the negative electrode of the control power supply and is connected with the motor in parallel, and two ends of the motor are connected with the positive electrode and the negative electrode of the control power supply through the switch contact of the energy storage motor controller. According to the utility model, the two time relay coils are connected in parallel, and the corresponding normally closed contacts control the control coil of the energy storage motor of the circuit breaker together in a series connection mode, so that the normal operation of the whole control loop is not influenced under the conditions of any time relay fault or setting value drift and the like, and the reliability of the normal operation of the circuit breaker is greatly improved.
Description
Technical Field
The utility model relates to the technical field of circuit breaker control, in particular to a novel circuit breaker energy storage control loop.
Background
In the present mainstream circuit breaker energy storage control circuit, all adopt single time relay to control, according to many accident reason analysis, the circuit breaker energy storage motor that finds in service time operation has far exceeded the time of settlement by some times, and the final check is the discovery because circuit breaker energy storage mechanism travel switch is malfunctioning, has run into the time relay of control energy storage time and has taken place the skew simultaneously under this condition, leads to the energy storage circuit to be in the running state for a long time. On one hand, if the energy storage motor runs all the time, the energy storage motor is burnt out and even the energy storage mechanism and the breaker are damaged, on the other hand, the replacement of the energy storage motor needs to power off the part related to the whole breaker, and the system running is seriously influenced; on the other hand, if the energy storage motor burns out the back relevant circuit or main transformer etc. breaks down, can't the energy storage after the relevant circuit breaker action, if reclosing the action this moment, will lead to the circuit breaker to move under the condition of not having the energy storage, serious will damage the circuit breaker, the trouble can't in time be amputated moreover, will further enlarge the accident, may even arouse major accident such as the whole network power failure.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art, provides a novel circuit breaker energy storage control circuit, and solves the problems that under the condition that a travel switch of a circuit breaker energy storage mechanism in a circuit breaker energy storage circuit controlled by a single time relay fails, the time relay for controlling energy storage time is deviated, so that an energy storage motor and a mechanism thereof are damaged, the circuit breaker cannot normally act and the like.
The purpose of the utility model is realized by the following technical scheme: a novel energy storage control loop of a circuit breaker comprises two first time relays KTA1 and KTA2 which are connected in parallel, wherein one end of the circuit breaker after being connected in parallel is connected with an energy storage mechanism travel switch SL1, and the other end of the circuit breaker after being connected in parallel is connected with the negative pole of a control power supply; one end of the energy storage mechanism travel switch SL1 is connected with the first time relays KTA1 and KTA2 which are connected in parallel, and the other end of the energy storage mechanism travel switch SL1 is connected with the anode of the control power supply; the energy storage motor controller is connected with the negative electrode of the control power supply and is connected with the motor in parallel, and two ends of the motor are connected with the positive electrode and the negative electrode of the control power supply through the switch contact of the energy storage motor controller.
Two second time relays connected in sequence are connected in series between a coil of the energy storage motor controller and the connecting ends of the energy storage mechanism travel switch SL1 and the two parallel first time relays.
The A1 ends of the first time relays KTA1 and KTA2 are connected in parallel and then connected with the X1:20 end of the energy storage mechanism travel switch SL1, and the A2 ends of the first time relays KTA1 and KTA2 are connected in parallel and then connected with the negative electrode of the control power supply.
The energy storage motor controller comprises two switch contacts and a coil, wherein one ends of the two switch contacts are respectively connected to two ends of the motor, and the other ends of the two switch contacts are respectively connected with the anode and the cathode of the control power supply; one end of the coil is connected with the negative electrode of the control power supply, and the other end of the coil is connected with one ends of two second time relays which are sequentially connected.
The first time relays KTA1 and KTA2 are digital time relays.
The utility model has the following advantages: the utility model provides a novel circuit breaker energy storage control circuit, through two time relay coils through parallelly connected, corresponding normally closed contact (time delay disconnection) is through the mode control circuit breaker energy storage motor control coil of establishing ties together, under the circumstances such as arbitrary time relay trouble or setting drift, all do not influence the normal operating of whole control circuit, has improved the reliability of circuit breaker normal work greatly. Two time relay encapsulation can reduce the influence of daily vibration to the relay on the one hand in a antivibration small-size control panel, and on the other hand can reduce electromagnetic radiation to time relay's influence after with control panel ground connection. The whole control mechanism is connected with an external loop only through a small number of anti-vibration terminals, so that the reliability is high, and the daily maintenance is facilitated; and two time relays are mutually in a standby relation, when one time relay needs to be processed or a test is carried out, the normal operation of the whole energy storage control loop cannot be influenced after the terminal of the corresponding time relay is short-circuited.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the detailed description of the embodiments of the present application provided below in connection with the appended drawings is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application. The utility model is further described below with reference to the accompanying drawings.
As shown in fig. 1, the utility model specifically relates to a novel energy storage control loop of a circuit breaker, which comprises two first time relays KTA1 and KTA2 connected in parallel, wherein one end of the circuit breaker is connected with an energy storage mechanism travel switch SL1, and the other end of the circuit breaker is connected with a negative electrode of a control power supply; one end of the energy storage mechanism travel switch SL1 is connected with the first time relays KTA1 and KTA2 which are connected in parallel, and the other end of the energy storage mechanism travel switch SL1 is connected with the anode of the control power supply; the energy storage motor controller is connected with the negative electrode of the control power supply and is connected with the motor in parallel, and two ends of the motor are connected with the positive electrode and the negative electrode of the control power supply through the switch contact of the energy storage motor controller.
Two second time relays connected in sequence are connected in series between a coil of the energy storage motor controller and the connecting ends of the energy storage mechanism travel switch SL1 and the two parallel first time relays.
The A1 ends of the first time relays KTA1 and KTA2 are connected in parallel and then connected with the X1:20 end of the energy storage mechanism travel switch SL1, and the A2 ends of the first time relays KTA1 and KTA2 are connected in parallel and then connected with the negative electrode of the control power supply.
The energy storage motor controller comprises two switch contacts and a coil, wherein one ends of the two switch contacts are respectively connected to two ends of the motor, and the other ends of the two switch contacts are respectively connected with the anode and the cathode of the control power supply; one end of the coil is connected with the negative electrode of the control power supply, and the other end of the coil is connected with one ends of two second time relays which are sequentially connected.
The first time relays KTA1 and KTA2 are digital time relays.
Specifically, the A1 ends of the control coils of the two digital time relays are connected in parallel and are connected into a travel switch signal terminal X1:20 of the energy storage mechanism of the circuit breaker together, namely the A1 ends of the two coils are connected in parallel and then are connected to the travel switch of the energy storage mechanism of the circuit breaker together, and the A2 ends of the two digital time relays are connected in parallel and then are connected to the negative electrode of a control power supply, so that the two relays are controlled by using the same power supply, the problem of power supply asynchronization is avoided, and the two time relays participate in control at the same time; meanwhile, the 55 terminal of one of the time relays is connected to a circuit breaker travel switch signal terminal X1:20 through the 55 terminal of one end of the normally closed contact (time delay disconnection contact), the output terminal 56 of the time relay is connected to the 55 terminal of one end of the normally closed contact (time delay disconnection contact) of the other digital time relay, the output terminal 56 of the other time relay is connected to the A1 terminal of the coil of the energy storage motor control contactor, the A2 terminal of the coil of the energy storage motor control contactor is connected to the negative pole of a power supply, namely the normally closed output contacts (time delay disconnection contacts) of the two time relays are connected in series to control the control contactor of the energy storage motor together.
According to the control logic, the two time relays are packaged together in an anti-vibration small control box, only one positive power supply access terminal is required to be connected to X1:20, and one negative power supply access terminal is required to be connected to the coil A2 end and one serial connection point output terminal (No. 56 terminal of any relay), and then the two time relays are installed in the circuit breaker control panel cabinet, so that the influence of the vibration of the circuit breaker control panel cabinet on the relays can be perfectly solved, and meanwhile, the electromagnetic interference in the panel cabinet can be solved. In such a case, even when the travel switch drifts, the whole energy storage loop can be controlled by any one time relay. Therefore, safe and stable operation of the energy storage control motor and the whole circuit breaker is further ensured.
The working principle of the utility model is as follows: in the whole control loop, when the circuit breaker needs to store energy, the travel switch SL1 of the energy storage mechanism is closed, the energy storage motor starts to work, and the SL1 is automatically disconnected after the energy storage is in place to stop storing energy; the time relays KTA1 and KTA2 start timing when energy storage starts, and the time relay time is set to be slightly longer than the normal energy storage time. Under the condition that the travel switch of the energy storage mechanism deviates or fails, the energy storage motor is controlled to stop working through the time relay, and at the moment, if the travel switch of the energy storage mechanism deviates under the condition that the setting value of a certain time relay deviates, the travel switch of the energy storage mechanism can be controlled through another time relay, so that an energy storage loop is disconnected, the energy storage motor is prevented from being burnt out due to long-time running of the energy storage motor, and even the energy storage mechanism is damaged. Therefore, the reliability and the stability of the operation of the circuit breaker are improved, and the safety and the stability of the whole power system are further improved.
The foregoing is illustrative of the preferred embodiments of this invention, and it is to be understood that the utility model is not limited to the precise form disclosed herein and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the concept as disclosed herein, either as described above or as apparent to those skilled in the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (5)
1. The utility model provides a novel circuit breaker energy storage control circuit which characterized in that: the energy storage device comprises two first time relays KTA1 and KTA2 which are connected in parallel, wherein one end of the energy storage device after being connected in parallel is connected with an energy storage mechanism travel switch SL1, and the other end of the energy storage device after being connected in parallel is connected with a negative electrode of a control power supply; one end of the energy storage mechanism travel switch SL1 is connected with the first time relays KTA1 and KTA2 which are connected in parallel, and the other end of the energy storage mechanism travel switch SL1 is connected with the anode of the control power supply; the energy storage motor controller is connected with the negative electrode of the control power supply and is connected with the motor in parallel, and two ends of the motor are connected with the positive electrode and the negative electrode of the control power supply through the switch contact of the energy storage motor controller.
2. The novel circuit breaker energy storage control loop of claim 1, characterized in that: two second time relays connected in sequence are connected in series between a coil of the energy storage motor controller and the connecting ends of the energy storage mechanism travel switch SL1 and the two parallel first time relays.
3. The novel circuit breaker energy storage control loop of claim 1, characterized in that: the A1 ends of the first time relays KTA1 and KTA2 are connected in parallel and then connected with the X1:20 end of the energy storage mechanism travel switch SL1, and the A2 ends of the first time relays KTA1 and KTA2 are connected in parallel and then connected with the negative electrode of the control power supply.
4. The novel circuit breaker energy storage control loop of claim 2, characterized in that: the energy storage motor controller comprises two switch contacts and a coil, wherein one ends of the two switch contacts are respectively connected to two ends of the motor, and the other ends of the two switch contacts are respectively connected with the anode and the cathode of the control power supply; one end of the coil is connected with the negative electrode of the control power supply, and the other end of the coil is connected with one ends of two second time relays which are sequentially connected.
5. The novel circuit breaker energy storage control loop of any one of claims 1-4, wherein: the first time relays KTA1 and KTA2 are digital time relays.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122104594.9U CN215578418U (en) | 2021-09-02 | 2021-09-02 | Novel circuit breaker energy storage control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122104594.9U CN215578418U (en) | 2021-09-02 | 2021-09-02 | Novel circuit breaker energy storage control circuit |
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| Publication Number | Publication Date |
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| CN215578418U true CN215578418U (en) | 2022-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122104594.9U Active CN215578418U (en) | 2021-09-02 | 2021-09-02 | Novel circuit breaker energy storage control circuit |
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| CN (1) | CN215578418U (en) |
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2021
- 2021-09-02 CN CN202122104594.9U patent/CN215578418U/en active Active
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