阅读说明：本技术 一种用于精益化台区管理的断路器跳闸驱动电路 (Circuit breaker tripping drive circuit for lean transformer area management ) 是由 陈志广 吴卓霖 王振举 徐明明 王佳豪 边红旗 张海峰 于 2021-06-28 设计创作，主要内容包括：本发明涉及低压电力台区的技术领域,具体地说是涉及一种用于精益化台区管理的断路器跳闸驱动电路,其特征在于：所述的K1、K2均为高电平时,才能使开关跳闸,而平时,K1、K2均为低电平,偶尔的干扰,使K1或K2其中的一个变为高电平时,也不会发生跳闸现象,提高了断路器运行的抗干扰性能,这样的一种用于精益化台区管理的断路器跳闸驱动电路具有采用两个端口来控制断路器跳闸驱动电路,一个端口用于控制跳闸线圈的电源是否接通,另一个端口控制跳闸线圈是否流过电流,从而避免误触发断路器跳闸,提高断路器运行稳定性的优点。(The invention relates to the technical field of low-voltage power transformer areas, in particular to a circuit breaker tripping drive circuit for lean transformer area management, which is characterized in that: when the K1 and the K2 are both at a high level, the switch can be tripped, and when the K1 and the K2 are both at a low level and are occasionally interfered, the tripping phenomenon can not occur when one of the K1 or the K2 is changed into the high level, so that the anti-interference performance of the operation of the circuit breaker is improved.)

1. A circuit breaker trip drive circuit for lean zone management, comprising circuitry characterized by: the two ends of the circuit are respectively provided with K1 and K2, the K1 and K2 are two control ends of the same CPU, the K1 is connected with a resistor R1, the other end of the resistor R1 is connected with a resistor R2 and the base of an NPN triode Q1, the other end of the resistor R2 is grounded, the emitter of the triode Q1 is grounded, the collector of the triode Q1 is connected with a resistor R3, the resistor R3 is connected with the base of a PNP triode Q2, the emitter of the triode Q2 is connected with the positive VCC of a power supply, the collector of the triode Q2 is connected with the negative pole of a diode D1 and the A end of a tripping coil J1, the B end of the tripping coil J1 is connected with the positive pole of a diode D1 and also connected with the collector of the NPN triode Q3, the emitter of the triode Q3 is grounded, the base of the triode Q3 is connected with resistors R4 and R5, and the other end of the resistor R5 is grounded, the other end of the resistor R4 is connected to a control pin K2 of the CPU.

2. A circuit breaker trip drive circuit for lean bay management as recited in claim 1, wherein: when K1 be the low level, triode Q1 does not switch on, triode Q2 also does not switch on, and the A end of circuit breaker tripping coil J1 does not have the power supply, no matter K2 is high level or low level, and circuit breaker tripping coil J1 both ends all have no voltage, so the tripping phenomenon can not take place for the circuit breaker.

3. A circuit breaker trip drive circuit for lean bay management as recited in claim 1, wherein: when the K1 is at a high level, the triode Q1 is conducted, the triode Q2 is also conducted, the A end of the tripping coil J1 of the circuit breaker is provided with a power supply, at the moment, when the K2 is at a low level, the triode Q3 is not conducted, no current flows through the tripping coil J1 of the circuit breaker, and therefore the switch cannot trip; when K2 is high, transistor Q3 is on, and current flows through the circuit breaker trip coil J1, and the switch trips.

Technical Field

The invention relates to the technical field of low-voltage power transformer areas, in particular to a circuit breaker tripping drive circuit for lean transformer area management.

Background

Along with the construction of the smart grid, lean management of a low-voltage power station area becomes a basic requirement, and a breaker in the low-voltage power station area also puts higher requirements on the aspect of anti-interference capacity. The existing circuit breaker tripping driving circuit is mostly single-ended driving, and when the circuit breaker tripping driving circuit is interfered by the outside, the circuit breaker is tripped by mistake easily.

Disclosure of Invention

The technical problem to be solved by the present invention is to provide a circuit breaker trip driving circuit for lean station management, which has two ports to control the circuit breaker trip driving circuit, wherein one port is used to control whether the power supply of the trip coil is connected, and the other port controls whether the current flows through the trip coil, thereby avoiding the false triggering of the circuit breaker trip, and improving the operation stability of the circuit breaker.

In order to solve the technical problems, the invention adopts the technical scheme that: a circuit breaker trip drive circuit for lean zone management, comprising circuitry characterized by: the two ends of the circuit are respectively provided with K1 and K2, the K1 and K2 are two control ends of the same CPU, the K1 is connected with a resistor R1, the other end of the resistor R1 is connected with a resistor R2 and the base of an NPN triode Q1, the other end of the resistor R2 is grounded, the emitter of the triode Q1 is grounded, the collector of the triode Q1 is connected with a resistor R3, the resistor R3 is connected with the base of a PNP triode Q2, the emitter of the triode Q2 is connected with the positive VCC of a power supply, the collector of the triode Q2 is connected with the negative pole of a diode D1 and the A end of a tripping coil J1, the B end of the tripping coil J1 is connected with the positive pole of a diode D1 and also connected with the collector of the NPN triode Q3, the emitter of the triode Q3 is grounded, the base of the triode Q3 is connected with resistors R4 and R5, and the other end of the resistor R5 is grounded, the other end of the resistor R4 is connected to a control pin K2 of the CPU.

When K1 is the low level, triode Q1 does not switch on, triode Q2 also does not switch on, and the A end of circuit breaker trip coil J1 does not have the power supply, no matter K2 is high level or low level, and circuit breaker trip coil J1 both ends all have no voltage, so the tripping phenomenon can not take place for the circuit breaker.

When K1 is at high level, the triode Q1 is conducted, the triode Q2 is also conducted, and the A end of the breaker tripping coil J1 has power supply, at the moment, when K2 is at low level, the triode Q3 is not conducted, no current flows through the breaker tripping coil J1, so that the switch cannot trip; when K2 is high, transistor Q3 is on, and current flows through the circuit breaker trip coil J1, and the switch trips.

Therefore, the switch can be tripped only when the K1 and the K2 are both at a high level, and at ordinary times, the K1 and the K2 are both at a low level and occasionally interfere with each other, so that the tripping phenomenon cannot occur when one of the K1 or the K2 is changed into the high level, and the anti-interference performance of the operation of the circuit breaker is improved.

The invention has the beneficial effects that: the circuit breaker trip driving circuit for lean platform zone management has the advantages that the two ports are adopted to control the circuit breaker trip driving circuit, one port is used for controlling whether the power supply of the trip coil is connected, and the other port controls whether the current flows through the trip coil, so that the circuit breaker is prevented from being triggered by mistake to trip, and the operation stability of the circuit breaker is improved.

Drawings

Fig. 1 is a schematic circuit diagram of the present invention.

Detailed Description

The present invention will be described in further detail with reference to examples.

As shown in fig. 1: a circuit breaker trip drive circuit for lean zone management, comprising circuitry characterized by: the two ends of the circuit are respectively provided with K1 and K2, the K1 and K2 are two control ends of the same CPU, the K1 is connected with a resistor R1, the other end of the resistor R1 is connected with a resistor R2 and the base of an NPN triode Q1, the other end of the resistor R2 is grounded, the emitter of the triode Q1 is grounded, the collector of the triode Q1 is connected with a resistor R3, the resistor R3 is connected with the base of a PNP triode Q2, the emitter of the triode Q2 is connected with the positive VCC of a power supply, the collector of the triode Q2 is connected with the negative pole of a diode D1 and the A end of a tripping coil J1, the B end of the tripping coil J1 is connected with the positive pole of a diode D1 and also connected with the collector of the NPN triode Q3, the emitter of the triode Q3 is grounded, the base of the triode Q3 is connected with resistors R4 and R5, and the other end of the resistor R5 is grounded, the other end of the resistor R4 is connected to a control pin K2 of the CPU.

When K1 is the low level, triode Q1 does not switch on, triode Q2 also does not switch on, and the A end of circuit breaker trip coil J1 does not have the power supply, no matter K2 is high level or low level, and circuit breaker trip coil J1 both ends all have no voltage, so the tripping phenomenon can not take place for the circuit breaker.

When K1 is at high level, the triode Q1 is conducted, the triode Q2 is also conducted, and the A end of the breaker tripping coil J1 has power supply, at the moment, when K2 is at low level, the triode Q3 is not conducted, no current flows through the breaker tripping coil J1, so that the switch cannot trip; when K2 is high, transistor Q3 is on, and current flows through the circuit breaker trip coil J1, and the switch trips.

Therefore, the switch can be tripped only when the K1 and the K2 are both at a high level, and at ordinary times, the K1 and the K2 are both at a low level and occasionally interfere with each other, so that the tripping phenomenon cannot occur when one of the K1 or the K2 is changed into the high level, and the anti-interference performance of the operation of the circuit breaker is improved.

The circuit breaker trip driving circuit for lean platform zone management has the advantages that the two ports are adopted to control the circuit breaker trip driving circuit, one port is used for controlling whether the power supply of the trip coil is connected, and the other port controls whether the current flows through the trip coil, so that the circuit breaker is prevented from being triggered by mistake to trip, and the operation stability of the circuit breaker is improved.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way. Any simple modification, change and equivalent changes of the above embodiments according to the technical essence of the invention are still within the protection scope of the technical solution of the invention.