CN213817230U - Circuit breaker controller with distribution circuit branch recognition function - Google Patents
Circuit breaker controller with distribution circuit branch recognition function Download PDFInfo
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- CN213817230U CN213817230U CN202120027738.2U CN202120027738U CN213817230U CN 213817230 U CN213817230 U CN 213817230U CN 202120027738 U CN202120027738 U CN 202120027738U CN 213817230 U CN213817230 U CN 213817230U
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Abstract
The utility model relates to a circuit breaker controller with distribution circuit branch recognition function, including CPU, power and power sampling circuit, magnetic flux drive circuit, self-generating power and current processing circuit, human-computer interface circuit, carrier module and characteristic current processing circuit, CPU's output is connected to carrier module's input, arbitrary looks inlet wire side in the outside three phase current is connected to carrier module's output, outside three phase current's the side of being qualified for the next round of competitions is connected to characteristic current processing circuit's input, CPU's input is connected to characteristic current processing circuit's output. The utility model discloses circuit breaker controller with branch recognition function of distribution circuit need not to have a power failure and just can branch by automatic identification distribution circuit, and the automatic relational graph that generates is fast, and the accuracy is high.
Description
Technical Field
The utility model relates to a distribution and utilization electric technical field especially relates to a circuit breaker controller with distribution circuit branch recognition function.
Background
Along with well low voltage distribution lines automation range covers gradually, distribution automation further extends to the net is joined in marriage to the low pressure, and intelligent circuit breaker obtains the rapid development. The circuit breaker can automatically cut off the current after the current exceeds the trip setting, and the overcurrent and short circuit protection of the circuit is realized.
As shown in fig. 1, the conventional intelligent circuit breaker (controller) monitors each phase power supply on a line by sampling, and controls the action of a magnetic flux converter through a magnetic flux driving circuit, thereby realizing line protection under the condition of short circuit and overcurrent, but such an intelligent circuit breaker (controller) only has a distribution circuit protection or alarm function, does not have the identification capability of branch connection relation of a circuit breaker distribution line, and needs manual power failure for troubleshooting if the branch identification function is needed, a large amount of time and unnecessary power failure are needed, and the identification accuracy is not high. The branch connection condition of the distribution line of the existing circuit breaker is basically identified by manually checking the line or adding other monitoring terminals (DTUs) in the distribution line. The manual identification method is time-consuming and labor-consuming, and has the problems of troubleshooting errors and the like; the DTU identification method needs additional equipment, and the identification rate cannot reach 100%.
Disclosure of Invention
In view of this, the utility model aims at providing a circuit breaker controller with distribution circuit branch recognition function need not to have a power failure and just can automatic identification, automatic generation relation picture, and is fast, and the accuracy is high.
In order to achieve the above object, the present invention adopts a circuit breaker controller with a power distribution circuit branch recognition function, which comprises a CPU, a power supply and power supply sampling circuit, a magnetic flux driving circuit, a self-generated power supply and current processing circuit, a human-computer interface circuit, a carrier module and a characteristic current processing circuit, wherein the input end of the power supply and power supply sampling circuit is connected to the incoming side of an external three-phase power supply, the output end of the power supply and power supply sampling circuit is connected to the input end of the CPU, the input end of the self-generated power supply and current processing circuit is connected to the outgoing side of the external three-phase power supply, the output end of the self-generated power supply and current processing circuit is connected to the input end of the CPU, the input end of the magnetic flux driving circuit is connected to the output end of the CPU, the output end of the magnetic flux driving circuit is connected to an external magnetic flux converter to control the on-off of the external three-phase power supply circuit, and the human-computer interface circuit is connected to the CPU, the input end of the carrier module is connected with the output end of the CPU, the output end of the carrier module is connected with the wire inlet side of any phase in an external three-phase power supply, the input end of the characteristic current processing circuit is connected with the wire outlet side of the external three-phase power supply, and the output end of the characteristic current processing circuit is connected with the input end of the CPU.
The carrier module is responsible for generating characteristic current on any phase of the distribution line after receiving a control instruction of the CPU and recording the starting time, and the characteristic current processing circuit is responsible for detecting the characteristic current in the distribution line and recording the characteristic current code and time after detecting the characteristic current. The utility model discloses circuit breaker controller's branch recognition function theory of operation as follows: (1) an intelligent terminal (generally a TTU, in a power supply and distribution system, a distribution transformer monitoring terminal is used for collecting and controlling information of a distribution transformer) sets a time tag for each circuit breaker in a line before X time through a carrier; (2) after the time reaches X, the superior circuit breakers start to sequentially send the characteristic current, and simultaneously each circuit breaker detects the characteristic current, if the characteristic current is detected, the codes and the time are recorded; (3) after all the circuit breakers are sent, the intelligent terminal analyzes a time mark algorithm according to the detection results of all the circuit breakers and the generated time queue, and calculates a physical connection relation; (4) and after the completion, reporting the connection result to the master station for displaying, and realizing the relation graph of the distribution circuit branches. The utility model discloses circuit breaker controller need not to have a power failure just can automatic identification, and the relation picture of automatic generation distribution circuit and branch road is fast, and the accuracy is high.
The utility model discloses further set up to characteristic current processing circuit and include current transformer J1, current signal sampling circuit, ADC converter U1, signal processing chip IC1, outside three phase current's the side of being qualified for the next round of competitions is connected to current transformer J1's input, and current signal sampling circuit's input is connected to current transformer J1's output, and ADC converter U1's input is connected to current signal sampling circuit's output, and signal processing chip IC 1's input is connected to ADC converter U1's output, signal processing chip IC1 is connected with CPU.
After the characteristic current is sampled to obtain a current analog quantity signal, the current analog quantity signal is converted into a digital quantity signal by the ADC, and the digital quantity signal is sent to a signal processing chip (IC1) through the SPI, so that the characteristic current on the power distribution circuit is processed.
The utility model is further arranged that the current signal sampling circuit comprises a phase-A current signal sampling unit, a phase-B current signal sampling unit and a phase-C current signal sampling unit which are connected in circuit in a consistent manner, wherein the phase-A current signal sampling unit comprises a resistor R1, a resistor R2, a resistor R4, a resistor R5, a capacitor C1 and a capacitor C2, the resistor R2 is connected in series with the resistor R4, the resistor R1 is connected in series with the capacitor C1, the resistor R5 is connected in series with the capacitor C2, one end of the resistor R2 and one end of the resistor R5 are respectively connected with the phase-A output end of the current transformer J1, one end of the resistor R1 is connected with one end of the resistor R2, one end of the resistor R5 is connected with one end of the resistor R4, one end of the capacitor C1 is connected with one end of the capacitor C2 in common, and the other ends of the resistor R1 and the resistor R5 are respectively connected with the input end of the ADC U1.
The utility model further provides that the model of ADC converter U1 is MCP 3914.
The utility model discloses the model that further sets up to signal processing chip IC1 is STM32F030C8T 6.
Taking the a-phase current signal sampling unit as an example, the a-phase current passes through the sampling resistors (R2, R4) and then the current signal is converted into a voltage millivolt signal; and then the three-phase current signals are connected to a channel 0(CH0+, CH0-) of the ADC after being composed of R1, C1, R5 and C2 and a filter circuit, the phase B current and the phase C current are in the same principle, the three-phase current signals are input into a signal processing chip IC1 after being subjected to analog-to-digital conversion by the ADC, the signal processing chip IC1 extracts characteristic current signals superposed in the current signals through an algorithm to form a characteristic mark, and meanwhile, the signal processing chip can only send the detected characteristic signals to a CPU through a USART interface.
Drawings
Fig. 1 is a block diagram of electrical connections of a circuit breaker controller in the background art.
Fig. 2 is a block diagram of an electrical connection according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of a characteristic current processing circuit according to an embodiment of the present invention.
Fig. 4 is a schematic diagram of a connection relationship of the circuit breaker according to an embodiment of the present invention.
Detailed Description
As shown in fig. 2, the present invention relates to a circuit breaker controller with a distribution circuit branch recognition function, which comprises a CPU, a power supply and power supply sampling circuit, a magnetic flux driving circuit, a self-generated power supply and current processing circuit, a human-computer interface circuit, a carrier module and a characteristic current processing circuit, wherein the input end of the power supply and power supply sampling circuit is connected to the incoming side of an external three-phase power supply, the output end of the power supply and power supply sampling circuit is connected to the input end of the CPU, the input end of the self-generated power supply and current processing circuit is connected to the outgoing side of the external three-phase power supply, the output end of the self-generated power supply and current processing circuit is connected to the input end of the CPU, the input end of the magnetic flux driving circuit is connected to the output end of the CPU, the output end of the magnetic flux driving circuit is connected to an external magnetic flux converter to control the on-off of the external three-phase power supply circuit, the human-computer interface circuit is connected to the CPU, the input end of the carrier module is connected with the output end of the CPU, the output end of the carrier module is connected with the wire inlet side of any phase in an external three-phase power supply, the input end of the characteristic current processing circuit is connected with the wire outlet side of the external three-phase power supply, and the output end of the characteristic current processing circuit is connected with the input end of the CPU.
As shown in fig. 3, the characteristic current processing circuit includes a current transformer J1, a current signal sampling circuit, an ADC converter U1, and a signal processing chip IC1, an input terminal of the current transformer J1 is connected to an outgoing line side of an external three-phase power supply, an output terminal of the current transformer J1 is connected to an input terminal of the current signal sampling circuit, an output terminal of the current signal sampling circuit is connected to an input terminal of an ADC converter U1, an output terminal of the ADC converter U1 is connected to an input terminal of a signal processing chip IC1, the signal processing chip IC1 is connected to a CPU, the ADC converter U1 is of the MCP3914, and the signal processing chip IC1 is of the STM32F030C8T 6. The current signal sampling circuit comprises a phase-A current signal sampling unit, a phase-B current signal sampling unit and a phase-C current signal sampling unit which are connected in a circuit in a consistent mode, wherein the phase-A current signal sampling unit comprises a resistor R1, a resistor R2, a resistor R4, a resistor R5, a capacitor C1 and a capacitor C2, the resistor R2 is connected with the resistor R4 in series, the resistor R1 is connected with the capacitor C1 in series, the resistor R5 is connected with the capacitor C2 in series, one end of the resistor R2 and one end of the resistor R5 are respectively connected with an phase-A output end of a current transformer J1, one end of the resistor R1 is connected with one end of a resistor R2, one end of the resistor R5 is connected with one end of a resistor R4, one end of a capacitor C1 is connected with one end of a capacitor C2 in common, and the other ends of the resistor R1 and the resistor R5 are respectively connected with an input end of an ADC U1.
According to the above embodiments, the power distribution circuit is described by taking the circuit breaker connection relationship of fig. 4 as an example: (1) the method comprises the steps that an intelligent terminal (generally a TTU) carries out time label setting on each circuit breaker in a line before X time through carrier waves;
(2) after the time reaches X, sequentially sending the characteristic currents from the 1# circuit breaker, and simultaneously detecting the characteristic currents by each circuit breaker, and recording codes and time if the characteristic currents are detected; (wherein, the 1# breaker records the characteristic codes of all breakers, the 2# breaker records the characteristic codes of 2#, 4#, 5#, and so on)
(3) After all the circuit breakers are sent, the intelligent terminal analyzes a time mark algorithm according to the detection results of all the circuit breakers and the generated time queue, and calculates a physical connection relation;
(4) and after the completion, reporting the connection result to the master station for display.
In addition to the above embodiments, there are also other embodiments of the present invention, and those skilled in the art can make various corresponding changes and modifications according to the present invention without departing from the spirit and scope of the present invention, and those changes and modifications are equivalent to the technical solutions in the present patent, and then those corresponding changes and modifications are all within the scope of the appended claims.
Claims (5)
1. The utility model provides a circuit breaker controller with distribution circuit branch recognition function, includes CPU, power and power sampling circuit, magnetic flow drive circuit, self-generating power and current processing circuit, man-machine interface circuit, the input of power and power sampling circuit is connected the incoming line side of outside three-phase power, and the input of CPU is connected to the output of power and power sampling circuit, the side of being qualified for the next round of competitions of outside three-phase power is connected to the input of self-generating power and current processing circuit, the input of CPU is connected to the output of self-generating power and current processing circuit, the output of magnetic flow drive circuit is connected the output of CPU, and the break-make of outside three-phase power circuit is controlled to the outside magnetic flow converter of output connection of magnetic flow drive circuit, man-machine interface circuit is connected with CPU, its characterized in that: the power supply system is characterized by further comprising a carrier module and a characteristic current processing circuit, wherein the input end of the carrier module is connected with the output end of the CPU, the output end of the carrier module is connected with the wire inlet side of any phase in an external three-phase power supply, the input end of the characteristic current processing circuit is connected with the wire outlet side of the external three-phase power supply, and the output end of the characteristic current processing circuit is connected with the input end of the CPU.
2. The circuit breaker controller with distribution circuit branch identification functionality of claim 1, wherein: the characteristic current processing circuit comprises a current transformer J1, a current signal sampling circuit, an ADC converter U1 and a signal processing chip IC1, wherein the input end of the current transformer J1 is connected with the outgoing line side of an external three-phase power supply, the output end of the current transformer J1 is connected with the input end of the current signal sampling circuit, the output end of the current signal sampling circuit is connected with the input end of the ADC converter U1, the output end of the ADC converter U1 is connected with the input end of the signal processing chip IC1, and the signal processing chip IC1 is connected with a CPU.
3. The circuit breaker controller with distribution circuit branch identification functionality of claim 2, wherein: the current signal sampling circuit comprises a phase-A current signal sampling unit, a phase-B current signal sampling unit and a phase-C current signal sampling unit which are connected in a circuit in a consistent mode, wherein the phase-A current signal sampling unit comprises a resistor R1, a resistor R2, a resistor R4, a resistor R5, a capacitor C1 and a capacitor C2, the resistor R2 is connected with the resistor R4 in series, the resistor R1 is connected with the capacitor C1 in series, the resistor R5 is connected with the capacitor C2 in series, one end of the resistor R2 and one end of the resistor R5 are respectively connected with an phase-A output end of a current transformer J1, one end of the resistor R1 is connected with one end of a resistor R2, one end of the resistor R5 is connected with one end of a resistor R4, one end of a capacitor C1 is connected with one end of a capacitor C2 in common, and the other ends of the resistor R1 and the resistor R5 are respectively connected with an input end of an ADC U1.
4. The circuit breaker controller with distribution circuit branch identification function according to claim 2 or 3, characterized in that: the ADC converter U1 is of the model MCP 3914.
5. The circuit breaker controller with distribution circuit branch identification function according to claim 2 or 3, characterized in that: the model of the signal processing chip IC1 is STM32F030C8T 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120027738.2U CN213817230U (en) | 2021-01-04 | 2021-01-04 | Circuit breaker controller with distribution circuit branch recognition function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120027738.2U CN213817230U (en) | 2021-01-04 | 2021-01-04 | Circuit breaker controller with distribution circuit branch recognition function |
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| Publication Number | Publication Date |
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| CN213817230U true CN213817230U (en) | 2021-07-27 |
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| CN202120027738.2U Active CN213817230U (en) | 2021-01-04 | 2021-01-04 | Circuit breaker controller with distribution circuit branch recognition function |
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- 2021-01-04 CN CN202120027738.2U patent/CN213817230U/en active Active
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