CN214585869U - Pole-mounted circuit breaker detection device - Google Patents
Pole-mounted circuit breaker detection device Download PDFInfo
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- CN214585869U CN214585869U CN202023023594.8U CN202023023594U CN214585869U CN 214585869 U CN214585869 U CN 214585869U CN 202023023594 U CN202023023594 U CN 202023023594U CN 214585869 U CN214585869 U CN 214585869U
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Abstract
The utility model relates to a circuit breaker detection device on post, circuit breaker are equipped with hall current sensor on the post, including the front end current acquisition circuit, analog-to-digital conversion module, the data reading module that connect gradually. The front-end current acquisition circuit is used for acquiring current signals of charging and switching-on and switching-off of an energy storage power supply of the pole-mounted circuit breaker and converting the current signals into small voltage signals; the analog-to-digital conversion module converts the analog small voltage signal into a digital signal; the data reading module is used for realizing the analog-digital conversion module and reading voltage signal data. The utility model discloses on the basis of circuit breaker on the post, increase circuit breaker energy storage motor supply voltage on the post, front end electric current and collect electric circuit, carry out the record ripples to energy storage power and divide-shut brake action, whether the detected signal wave form is normal, judge whether energy storage motor supply voltage electric current and operating mechanism divide-shut brake action are normal, realize the initiative perception to circuit breaker health state on the post, improve electric wire netting operational reliability.
Description
Technical Field
The utility model belongs to the technical field of circuit breaker on the post, more specifically say, relate to a circuit breaker health status detection device on post.
Background
The pole-mounted circuit breaker equipment is mechanical switching equipment which is arranged in a 10kV overhead distribution line and is used for breaking, closing and bearing line load current and fault current. With the development of power distribution networks towards informatization, intellectualization and integration, the structure of the power distribution network gradually becomes more and more complex, and the pole-mounted circuit breaker equipment is used as important equipment of a power distribution line, and the reliability and stability of the work of the pole-mounted circuit breaker equipment are related to the safe operation of the power distribution network.
Because the pole-mounted circuit breaker equipment works in a severe environment with high temperature, high voltage and humidity for a long time, various faults are easy to occur, and the power supply line is paralyzed. At present, for the troubleshooting of the equipment fault problem of the pole-mounted circuit breaker, the maintenance personnel is still mainly relied on to stop the power supply for overhauling, so that the line load is powered off for a long time. Aiming at the problem, the development of the on-pole breaker health state detection device is very important so as to be in accordance with the aim of automatic development of a power distribution network.
Disclosure of Invention
The utility model discloses the technical problem who plans to solve is, designs a circuit breaker health status detection device on post. The utility model discloses the technical scheme who adopts as follows:
the utility model provides a circuit breaker detection device on post, circuit breaker is equipped with hall current sensor on the post, includes: the device comprises a front-end current acquisition circuit, an analog-to-digital conversion module and a data reading module which are connected in sequence. The front-end current acquisition circuit is used for acquiring current signals of charging and switching-on and switching-off of an energy storage power supply of the pole-mounted circuit breaker and converting the current signals into small voltage signals; the analog-to-digital conversion module converts the analog small voltage signal into a digital signal; the data reading module is used for reading voltage signal data from the analog-to-digital conversion module.
The utility model has the advantages that:
the utility model discloses on the basis of circuit breaker on the post, increase circuit breaker energy storage motor power supply front end electric current acquisition electric circuit on the post, and then charge and divide-shut brake action to energy storage power and carry out the record ripples, whether normally judge whether energy storage motor power charges and whether operating mechanism divide-shut brake action is normal according to the detected signal wave form to the realization is to the initiative perception of circuit breaker health state on the post, improves electric wire netting operational reliability.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are illustrative of some embodiments of the invention, and that those skilled in the art will be able to derive other drawings without inventive step from these drawings, which are within the scope of the present application.
Fig. 1 is a schematic structural diagram of a detection device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a front-end current collection circuit according to an embodiment of the present invention;
fig. 3 is a schematic circuit diagram of an analog-to-digital conversion module according to an embodiment of the present invention;
fig. 4 is a schematic circuit diagram of a data reading module according to an embodiment of the present invention.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention.
As shown in fig. 1, is a schematic structural diagram of a detection apparatus according to an embodiment of the present invention. The utility model provides a circuit breaker detection device on post, includes detection device casing, whole encapsulation in the detection device casing, the detection device casing on be provided with the aerial plug interface. The pole-mounted circuit breaker is provided with a Hall current sensor and is used for collecting the current of the energy storage motor power supply, collecting the current to the aerial plug interface at the side of the pole-mounted circuit breaker, connecting the aerial plug interface of the pole-mounted circuit breaker with the aerial plug interface of the detection device, and transmitting the current signal of the energy storage motor power supply to the front end signal collection circuit of the detection device.
The detection device shell is internally provided with a front-end current acquisition circuit, an analog-to-digital conversion module and a data reading module which are connected in sequence. The front-end current acquisition circuit is used for acquiring current signals of charging and switching-on and switching-off of an energy storage power supply of the pole-mounted circuit breaker and converting the current signals into small voltage signals. Fig. 2 is a schematic structural diagram of a front-end current collection circuit according to an embodiment of the present invention. The front-end current acquisition circuit is connected to the Hall current sensor through the aviation plug interface, and the Hall current sensor can be used for measuring direct current, alternating current, pulse and various irregular waveform currents. The Hall current sensor is connected with a 24V power supply and used for providing a working power supply, is sleeved on an energy storage motor power supply loop of the pole-mounted circuit breaker, and converts current signals of charging and switching-on and switching-off of an energy storage power supply of a switching-on and switching-off motor of the pole-mounted circuit breaker into small voltage signals, wherein the measuring range is 20A/2V; meanwhile, the selection of the Hall current sensor can meet the requirement of overcurrent collection and cannot influence the sampling precision of normal collection. Hall current sensor connects the follow circuit TLV2762ID amplifier chip is put to fortune, and the follow circuit TLV27 2762ID of fortune is connected 12V power and is used for providing working power supply, and Hall current sensor's output voltage signal is put the follow circuit through fortune and is exported, and the follow circuit is put to fortune improves little signal transmission's stability, accuracy. The output signal of the operational amplifier follower circuit is filtered by the RC circuit and then sent to the analog-digital conversion module, and the C1 adopts a polyester film capacitor, so that the self-healing performance is good, the reliability is high, the loss is small, and the electrical property is excellent. The front-end current acquisition circuit can ensure that the original analog signal has no distortion and high reliability and enters the post-stage analog-to-digital conversion module for sampling.
The analog-to-digital conversion module converts the analog small voltage signal into a digital signal. Fig. 3 is a schematic diagram of a circuit principle of the analog-to-digital conversion module according to an embodiment of the present invention. The analog-digital conversion module adopts an AD7606B chip, and the AD7606B chip is a 16-bit synchronous sampling and analog-digital conversion Data Acquisition System (DAS); the detection device is provided with 8 channels, so that the requirements of the detection device on multi-channel voltage and circuit sampling are met; each channel is provided with analog input clamping protection and can bear voltage up to +/-21V; in order to increase the rate of reading the A/D conversion data, increase the processing speed of the detection device on line signals and accelerate the fault response speed, the AD7606B selects a 16-bit parallel reading data mode to accelerate the reading processing of the main control chip on the original signals. Meanwhile, the signal acquisition frequency of AD7606B is more than 6kHZ, and at least 120 points of a cycle wave are satisfied, which is far higher than the acquisition rate and the acquisition points of conventional products, and the recording and the acquisition precision are more completely realized. The utility model discloses abandon traditional 12 AD conversion chips, adopt 16 AD conversion chips, signal acquisition's speed is faster, the precision is more accurate.
The data reading module is used for realizing the analog-digital conversion module and reading voltage signal data. Fig. 4 is a schematic diagram of a circuit principle of the data reading module according to an embodiment of the present invention. The data reading module adopt STM32F407 chip, be the utility model discloses the circuit principle schematic diagram of data reading module of embodiment. The STM32F407 chip is provided with a Flexible Static Memory Controller (FSMC), and can configure data buses FSMC _ D0-FSMC _ D16 with 16 bit width, and the data buses FSMC _ D0-FSMC _ D16 are correspondingly connected with 16 bit parallel data output pins of AD7606B respectively, so that access to AD7606B and data reading are realized.
The utility model discloses a mode that external 16 position AD7606B and the parallel high rate of high performance STM32F407 chip were gathered is compared with the mode that traditional product adopted low digit AD chip or the inside AD of DSP, can effectively improve acquisition frequency and collection precision.
Finally, it is to be noted that: the above embodiments are only specific embodiments of the present invention, and are not intended to limit the technical solutions of the present invention, and the scope of the present invention is not limited thereto. Those skilled in the art will understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (8)
1. The utility model provides a circuit breaker detection device on post, the circuit breaker is equipped with hall current sensor on the post, its characterized in that includes: the front-end current acquisition circuit, the analog-to-digital conversion module and the data reading module are sequentially connected; the front-end current acquisition circuit is used for acquiring current signals of charging and switching-on and switching-off of an energy storage power supply of the pole-mounted circuit breaker and converting the current signals into small voltage signals; the analog-to-digital conversion module converts the analog small voltage signal into a digital signal; the data reading module is used for reading voltage signal data from the analog-to-digital conversion module.
2. The pole-mounted circuit breaker detection device according to claim 1, wherein the front-end current acquisition circuit is connected to a hall current sensor through an air-plug interface, the hall current sensor is connected with an operational amplifier follower circuit, and an output signal of the operational amplifier follower circuit is filtered by an RC circuit and then is sent to the analog-to-digital conversion module.
3. The pole top breaker detection device of claim 2, wherein the operational amplifier follower circuit is a TLV2762ID amplifier chip connected to a 12V power supply for providing operating power.
4. The pole top breaker detection device of claim 3, wherein in said RC circuit, C1 is a polyester film capacitor.
5. The pole top breaker detection device of claim 1, wherein the analog-to-digital conversion module employs an AD7606B chip.
6. The pole-mounted circuit breaker detection device of claim 1, wherein the data reading module adopts an STM32F407 chip.
7. The pole top circuit breaker detection device of any one of claims 1 to 6, wherein said pole top circuit breaker detection device is integrally encapsulated within a detection device housing.
8. The pole break detection device of claim 7, wherein said detection device housing is provided with an aerial docking interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023023594.8U CN214585869U (en) | 2020-12-15 | 2020-12-15 | Pole-mounted circuit breaker detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023023594.8U CN214585869U (en) | 2020-12-15 | 2020-12-15 | Pole-mounted circuit breaker detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214585869U true CN214585869U (en) | 2021-11-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023023594.8U Active CN214585869U (en) | 2020-12-15 | 2020-12-15 | Pole-mounted circuit breaker detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214585869U (en) |
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2020
- 2020-12-15 CN CN202023023594.8U patent/CN214585869U/en active Active
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