CN212411349U - Circuit breaker state acquisition device based on power line carrier technology - Google Patents

Abstract

The utility model discloses a circuit breaker state collection system based on power line carrier technique. The device includes the carrier chip, the carrier chip includes that the carrier wave sends terminal and carrier wave receiving terminal, the carrier wave sends terminal and carrier wave receiving terminal and is used for connecting respectively at the both ends of arbitrary looks of circuit breaker, the carrier chip sends the terminal through the carrier wave and sends carrier signal to whether can receive the operating condition that its carrier signal who sends and judge the circuit breaker through the carrier wave receiving terminal, the carrier chip is connected with power module and output unit, the operating condition of circuit breaker is sent with the carrier chip control output unit. The utility model discloses to integrate in an organic whole, saved the other auxiliary contact of circuit breaker, saved the cabinet inner space, can provide more spaces for other devices, compare with through adorning auxiliary contact, saved equipment input and transformation cost to simplify the cabinet interior wiring, easily follow-up inspection and maintenance.

Description

Circuit breaker state acquisition device based on power line carrier technology

Technical Field

The utility model relates to a circuit breaker operating condition discernment indicates technical field, concretely relates to circuit breaker state collection system based on power line carrier technique.

Background

The power line carrier is a technology for transmitting an analog or digital signal at a high speed in a carrier manner by using a power transmission line as a transmission channel of a high-frequency signal. Because the power transmission line has high mechanical strength and good reliability, the communication mode is not only economical, but also stable. At present, the state of a circuit breaker of a switch cabinet is displayed by a state indicator of a circuit breaker state acquisition device intelligently controlled based on a power line carrier technology, an auxiliary contact is added on the circuit breaker in a detection mode, and the state of the circuit breaker is judged according to the connection state of the auxiliary contact. The power carrier technology has the greatest characteristic that a network does not need to be erected again, data can be transmitted as long as a wire is available, if the circuit breaker is operated and indicated based on the power carrier technology, an auxiliary contact is not needed completely, undoubtedly, wiring and cost in a cabinet can be greatly improved, and complexity of a system is reduced. At present, power plants and power distribution stations in China almost all adopt the circuit breakers with auxiliary contacts to achieve the purpose of detection, so that a large part of space in a switch cabinet is occupied, if the auxiliary contacts are in poor contact or other mechanical faults can directly cause the state indication error of the circuit breakers, and the circuit breakers are not easy to maintain.

Disclosure of Invention

The utility model aims at providing a circuit breaker state collection system based on power line carrier technique to the not enough of prior art existence.

For realizing above-mentioned purpose, the utility model provides a circuit breaker state collection system based on power line carrier technique, including the carrier chip, the carrier chip includes that the carrier wave sends terminal and carrier wave receiving terminal, the carrier wave sends terminal and carrier wave receiving terminal and is used for connecting respectively at the both ends of arbitrary looks of circuit breaker, the carrier chip sends the terminal through the carrier wave and sends carrier signal to whether can receive the operating condition that its carrier signal who sends judges the circuit breaker through the carrier wave receiving terminal, the carrier chip is connected with power module and output unit, carrier chip control output unit sends the operating condition of circuit breaker.

Further, the output unit includes a relay switching value output unit for issuing an operation state of the circuit breaker as a switching value signal.

Further, the output unit comprises an RS485 communication module.

Further, the relay switching value output unit comprises a triode Q1 with an emitter connected with the positive electrode of the power supply, the base of the triode Q1 is connected with the carrier chip, and a relay is connected between the emitter and the ground.

Furthermore, the carrier chip is connected with a reset chip.

Furthermore, the carrier chip is connected with a JTAG debugging interface.

Further, the type of the carrier chip is HT 8550.

Furthermore, the power module comprises a switching power supply and a voltage stabilizing chip connected with the switching power supply.

Has the advantages that: the utility model discloses to integrate in an organic whole, saved the other auxiliary contact of circuit breaker, saved the cabinet inner space, can provide more spaces for other devices, compare with through adorning auxiliary contact, saved equipment input and transformation cost to simplify the cabinet interior wiring, easily follow-up inspection and maintenance.

Drawings

Fig. 1 is a schematic block diagram of a circuit breaker state acquisition device based on power line carrier technology;

FIG. 2 is a schematic diagram of the connection of a carrier chip;

fig. 3 is a circuit diagram of a relay switching value output unit;

FIG. 4 is a schematic diagram of the connection of an RS485 communication module;

fig. 5 is a circuit diagram of a power supply module.

Detailed Description

The present invention will be further clarified by the following embodiments with reference to the attached drawings, which are implemented on the premise of the technical solution of the present invention, and it should be understood that these embodiments are only used for illustrating the present invention and are not used for limiting the scope of the present invention.

As shown in fig. 1 to 5, the embodiment of the present invention provides a circuit breaker state collecting device based on power line carrier technology, including carrier chip U1, the model of carrier chip U1 is preferably HT8550, and modules such as analog front end, digital modulation and demodulation and FLASH memory are integrated therein. The carrier chip U1 comprises a carrier sending terminal signal OUT and a carrier receiving terminal signal IN, the carrier sending terminal signal _ OUT and the carrier receiving terminal signal _ IN are respectively connected to two ends of any phase of the circuit breaker through acoupling line 2, the carrier chip U1 sends OUT a carrier signal through the carrier sending terminal signal _ OUT, and the operating state of the circuit breaker is judged through whether the carrier receiving terminal signal _ IN can receive the sent carrier signal. Specifically, when the carrier receiving terminal signal _ IN of the carrier chip U1 receives the transmitted carrier signal, it indicates that the circuit breaker is IN the closed state, and conversely, the circuit breaker is IN the open state. The carrier chip U1 is connected with thepower module 1 and the output unit, and the carrier chip U1 controls the output unit to send out the operating state of the circuit breaker.

The utility model discloses output unit includes relay switchingvalue output unit 1, and relay switchingvalue output unit 1 is used for sending the operating condition of circuit breaker with the switching value signal, and is concrete, and relay switchingvalue output unit 1 includes triode Q1 that projecting pole and power positive pole are connected, and triode Q1's base is connected with carrier chip U1, is connected with the relay between triode Q1's projecting pole and the ground. When the carrier chip U1 judges that the state of the circuit breaker is open, the Ctrl IO terminal of the carrier chip U1 outputs a low level signal, the collector and the emitter of the triode Q1 are in an open state, so that the relay is powered off, and the normally open contact of the relay is in an open state. When the carrier chip U1 judges that the state of the circuit breaker is closed, a Ctrl IO terminal of the carrier chip U1 outputs a high level signal, a collector electrode and an emitter electrode of the triode Q1 are in a conducting state, so that the relay is electrified, and a normally open contact of the relay is in a closed state. The relay switchingvalue output unit 1 can transmit the switching value state to the intelligent control device state indicator of the switch cabinet for displaying.

The utility model discloses output unit can also adopt RS485 communication module U3, communicates with external equipment through RS485 communication module U3. Specifically, the usa rt serial port of the carrier chip U1 is physically connected with the RS485 communication module U3, the U1_ TX and the U1_ RX correspondingly transmit and receive, and an idle general IO port is used to control the receiving and transmitting states of the RS485TO communication module.

The utility model discloses carrier chip U1 of the embodiment is connected with reset chip U2, and the model of reset chip U2 is preferred HT 7050A. VDD and VSS of the reset chip U2 are connected to a positive electrode and a negative electrode of a power module, the working condition of the power supply is monitored by an RC circuit, the reset operation is started through a determined voltage value (threshold value), meanwhile, the influence of transient interference is eliminated, misoperation during the starting and the closing of the power supply is prevented, and data safety is guaranteed.

The utility model discloses carrier chip U1 is connected withJTAG debugging interface 3, downloads the program or debugs throughJTAG debugging interface 3.

The utility model disclosespower module 1 includes switching power supply U4 and the steady voltage chip U5 of being connected with switching power supply U4. The input voltage of the switching power supply U4 is preferably alternating current 90-265V, the power can be directly obtained from a power supply in the cabinet, and the output voltage isdirect current 5V.

The above description is only a preferred embodiment of the present invention, and it should be noted that other parts not specifically described belong to the prior art or the common general knowledge to those skilled in the art. Without departing from the principle of the present invention, several improvements and decorations can be made, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims (8)

1. The utility model provides a circuit breaker state collection system based on power line carrier technique, a serial communication port, including the carrier chip, the carrier chip sends terminal and carrier wave receiving terminal including the carrier wave, the carrier wave sends terminal and carrier wave receiving terminal and is used for connecting respectively at the both ends of arbitrary looks of circuit breaker, the carrier chip sends the terminal through the carrier wave and sends carrier signal to whether can receive the operating condition that its carrier signal who sends judges the circuit breaker through the carrier wave receiving terminal, the carrier chip is connected with power module and output unit, the operating condition of circuit breaker is sent to carrier chip control output unit.

2. The circuit breaker state acquisition device based on power carrier technology according to claim 1, wherein the output unit comprises a relay switching value output unit for sending out the operation state of the circuit breaker as a switching value signal.

3. The circuit breaker state acquisition device based on power carrier technology as claimed in claim 1, wherein the output unit comprises an RS485 communication module.

4. The circuit breaker state acquisition device based on power carrier technology as claimed in claim 2, wherein the relay switching value output unit comprises a transistor Q1 with an emitter connected with the positive electrode of the power supply, the base of the transistor Q1 is connected with the carrier chip, and a relay is connected between the emitter and the ground.

5. The circuit breaker state acquisition device based on power carrier technology according to claim 1, characterized in that a reset chip is connected to the carrier chip.

6. The circuit breaker state acquisition device based on power line carrier technology according to claim 1, wherein the carrier chip is connected with a JTAG debug interface.

7. The circuit breaker state acquisition device based on power line carrier technology of claim 1, characterized in that the model of the carrier chip is HT 8550.

8. The circuit breaker state acquisition device based on power carrier technology according to claim 1, wherein the power module comprises a switching power supply and a voltage stabilizing chip connected with the switching power supply.

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