Primary and secondary fused set of circuit breaker on column current measuring device

Abstract

The utility model discloses a primary and secondary fusion complete set pole circuit breaker current measuring device, including pole circuit breaker and the current measuring device ontology of being fixed on it, the base, support frame, top cover plate and solar panel are equipped with the ontology, and integrate current measurement, signal processing, communication and power module, and current measurement module adopts high accuracy current transformer to gather current, and the precision is promoted in combination with temperature compensation, signal processing module is through amplification, filter and AD conversion processing signal, and the accuracy is guaranteed through isolation circuit, communication module realizes data transmission in combination with optical fiber and wireless, and built -in protocol conversion module ensures compatibility, and power module is powered by solar panel and battery, and the stability is guaranteed through charge -discharge management circuit, in addition, still be equipped with trouble alarm unit, can send abnormal alarm in time. The device realizes primary and secondary equipment high degree fusion, has high integration, high precision measurement, efficient communication, reliable power supply and so on advantage, can effectively guarantee the stable operation of power system.

Description

Technical Field

[0001] This utility model relates to the field of power equipment technology, specifically to a primary and secondary integrated pole-mounted circuit breaker current measuring device. Background Technology

[0002] In power systems, pole-mounted circuit breakers are important switching devices widely used in distribution networks for line control and protection. Accurate measurement of the current passing through pole-mounted circuit breakers is crucial for power grid operation monitoring, fault diagnosis, and the operation of protection devices.

[0003] Existing pole-mounted circuit breaker current measurement devices have the following problems: 1. The integration of the current measurement device with the circuit breaker body is low, the device is large in size, and the installation and maintenance process is complex and inconvenient, making it difficult to meet the requirements of compact and miniaturized installation; 2. Existing signal processing modules lack signal isolation circuits, making them susceptible to electrical interference from other circuits, which reduces the accuracy of signal processing and affects the reliable analysis of current data; 3. The power supply modules are mostly single power supply methods, lacking charge and discharge management circuits, making it impossible to flexibly supply power according to lighting conditions and equipment power demand, and the battery life is also difficult to guarantee.

[0004] Therefore, it is necessary to design a primary and secondary integrated pole-mounted circuit breaker current measurement device to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this invention is to provide a primary and secondary integrated pole-mounted circuit breaker current measurement device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A primary and secondary integrated pole-mounted circuit breaker current measurement device includes a pole-mounted circuit breaker and a current measurement device body fixedly installed on it. The current measurement device body includes a base at its bottom, and support frames distributed on the left and right sides are fixedly installed on the top of the base. A top cover plate is fixedly installed on the top of the support frames on both sides. Solar panels are arranged on the left and right sides of the top cover plate. The current measurement device body is also provided with a current measurement module, a signal processing module, a communication module and a power supply module respectively.

[0008] The current measurement module is integrated inside the current measurement device body and includes multiple high-precision current transformers. The multiple high-precision current transformers are respectively installed in each phase conductive circuit of the pole-mounted circuit breaker to collect the current signal of each phase in real time.

[0009] The signal processing module is connected to the current measurement module via a shielded cable. The signal processing module includes a signal amplification circuit, a filtering circuit, and an analog-to-digital conversion circuit. The signal amplification circuit is used to amplify the weak current signal acquired by the current measurement module; the filtering circuit is used to filter the amplified current signal to remove noise and interference; and the analog-to-digital conversion circuit is used to convert the filtered analog current signal into a digital signal.

[0010] The communication module is connected to the signal processing module. The communication module adopts a combination of fiber optic communication and wireless communication. Fiber optic communication is used to achieve high-speed and stable data transmission with the substation automation system, while wireless communication is used to achieve convenient communication with mobile terminals or remote monitoring centers, so that staff can obtain current measurement data anytime and anywhere. The communication module also has a built-in communication protocol conversion module, which can realize the conversion between different communication protocols and ensure compatibility with various power equipment.

[0011] The power supply module is connected to the current measurement module, signal processing module, and communication module via power supply lines. The power supply module includes a solar panel and a battery. The solar panel provides power to the device under sunlight and charges the battery. The battery provides stable power to the device when there is no sunlight or when the solar panel provides insufficient power.

[0012] As a preferred embodiment of this utility model, the multiple high-precision current transformers inside the current measurement module adopt an annular closed structure and are made of soft magnetic material with high permeability to improve the accuracy of measurement and anti-interference ability.

[0013] As a preferred embodiment of this utility model, the current measurement module further includes a temperature compensation module, which is used to monitor the temperature of the high-precision current transformer in real time and compensate and correct the measurement data according to the temperature change to improve the measurement accuracy.

[0014] As a preferred embodiment of this utility model, the signal processing module is further provided with a signal isolation circuit to isolate electrical interference between the signal processing module and other circuits, thereby ensuring the accuracy of signal processing.

[0015] As a preferred embodiment of this utility model, the communication module is further provided with a signal enhancement antenna to enhance the strength and transmission distance of the wireless communication signal and ensure the stability of communication with the mobile terminal or remote monitoring center.

[0016] As a preferred embodiment of this utility model, the power supply module further includes a charge and discharge management circuit for controlling the charging process of the solar panel to the battery and the discharging process of the battery to each module, thereby extending the battery's service life.

[0017] As a preferred embodiment of this utility model, the current measuring device body also includes a fault alarm unit. The fault alarm unit is installed in the current measuring device body and connected to the signal processing module. When the signal processing module detects an abnormal current, the fault alarm unit sends alarm information to the staff's mobile terminal through the communication module. At the same time, an audible and visual alarm device is installed on the current measuring device body to promptly remind on-site personnel.

[0018] As a preferred embodiment of this utility model, the base is provided with a plurality of mounting screws for securely mounting the current measuring device body onto the pole-mounted circuit breaker.

[0019] As a preferred embodiment of this utility model, the surface of the top cover plate is provided with a waterproof coating to prevent rainwater from entering the body of the current measuring device and damaging the electrical components.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] In this utility model, the integrated primary and secondary current measurement device for pole-mounted circuit breakers achieves the following effects: 1. It integrates the current measurement module, signal processing module, communication module, and power supply module into the main body of the current measurement device, closely combining it with the pole-mounted circuit breaker, reducing the device size and making installation and maintenance more convenient; 2. It adopts a high-precision current transformer with a ring-shaped closed structure and made of high-permeability soft magnetic material, combined with a temperature compensation module, effectively improving measurement accuracy and anti-interference capability, and reducing the impact of environmental factors on measurement results; 3. The signal processing module is equipped with a signal isolation circuit, which can effectively isolate electrical interference, ensure the accuracy of signal processing, and provide a reliable basis for subsequent current data analysis; 4. The communication module adopts... The system combines fiber optic and wireless communication, equipped with a signal enhancement antenna and a communication protocol conversion module, to achieve high-speed, stable, and convenient data transmission, improve compatibility with various power equipment, and facilitate intelligent management. 5. The power supply module uses a combination of solar panels and batteries, along with a charge / discharge management circuit, allowing for flexible power supply based on sunlight conditions and power demand, extending battery life and ensuring stable operation. 6. A fault alarm unit is included; when an abnormal current is detected, it can send alarm information to a mobile terminal via the communication module and alert on-site personnel via an audible and visual alarm, facilitating rapid fault handling and ensuring the safe and stable operation of the power system. 7. The top cover has a waterproof coating to prevent rainwater from damaging internal components. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0023] Figure 2 This is a three-dimensional structural diagram of the top cover plate of this utility model after disassembly;

[0024] Figure 3 This is a front view schematic diagram of the current measuring device body and the pole-mounted circuit breaker of this utility model when connected;

[0025] Figure 4 This is a connection block diagram of the pole-mounted circuit breaker, current measurement module, signal processing module and communication module of this utility model;

[0026] Figure 5 This is a connection block diagram of the signal processing module of this utility model.

[0027] In the diagram: 1. Pole-mounted circuit breaker; 2. Current measuring device body; 3. Base; 4. Support frame; 5. Top cover plate; 6. Solar panel; 7. Current measuring module; 8. Signal processing module; 81. Signal amplification circuit; 82. Filtering circuit; 83. Analog-to-digital conversion circuit; 9. Communication module; 10. Power supply module; 11. Power supply line; 12. Mounting screw. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0029] To facilitate understanding of this utility model, a more comprehensive description will be given below with reference to the accompanying drawings. Several embodiments of this utility model are provided. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0030] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0032] For examples, please refer to Figure 1-5 This utility model provides a technical solution:

[0033] The primary and secondary integrated pole-mounted circuit breaker current measurement device includes a pole-mounted circuit breaker 1 and a current measurement device body 2 fixedly installed on it. The current measurement device body 2 includes a base 3 set at its bottom, and support frames 4 distributed on the left and right sides are fixedly installed on the top of the base 3. A top cover plate 5 is fixedly installed on the top of the support frames 4 on both sides. Solar panels 6 are set on the left and right sides of the top cover plate 5. The current measurement device body 2 is also equipped with a current measurement module 7, a signal processing module 8, a communication module 9, and a power supply module 10.

[0034] Specifically, the current measurement module 7 is integrated inside the current measurement device body 2, including multiple high-precision current transformers. These high-precision current transformers are respectively installed in each phase conductive circuit of the pole-mounted circuit breaker 1 to collect the current signals of each phase in real time. The multiple high-precision current transformers adopt a ring-shaped closed structure and are made of soft magnetic material with high permeability to improve the accuracy of measurement and anti-interference capability. The current measurement module 7 also includes a temperature compensation module, which is used to monitor the temperature of the high-precision current transformers in real time and compensate and correct the measurement data according to the temperature change to improve the measurement accuracy. The multiple high-precision current transformers (located in each phase conductive circuit of the pole-mounted circuit breaker 1) collect the current signals of each phase in real time, and the temperature compensation module monitors the temperature of the high-precision current transformers in real time and compensates and corrects the measurement data according to the temperature change. The high-precision current transformers with a ring-shaped closed structure and made of soft magnetic material with high permeability, combined with the temperature compensation module, improve the accuracy of measurement and anti-interference capability, thereby enhancing the measurement accuracy.

[0035] Specifically, the signal processing module 8 and the current measurement module 7 are connected via a shielded cable. The signal processing module 8 includes a signal amplification circuit 81, a filtering circuit 82, and an analog-to-digital conversion circuit 83. The signal amplification circuit 81 amplifies the weak current signal acquired by the current measurement module 7; the filtering circuit 82 filters the amplified current signal to remove noise and interference; the analog-to-digital conversion circuit 83 converts the filtered analog current signal into a digital signal. The signal processing module 8 also includes a signal isolation circuit to isolate electrical interference between the signal processing module 8 and other circuits, ensuring the accuracy of signal processing. The weak current signal acquired by the current measurement module 7 is transmitted to the signal processing module 8 via a shielded cable. It is first amplified by the signal amplification circuit 81, then filtered by the filtering circuit 82 to remove noise and interference, and finally converted into a digital signal by the analog-to-digital conversion circuit 83. The signal isolation circuit isolates electrical interference from other circuits. The signal processing module amplifies, filters, and performs analog-to-digital conversion on the current signal while isolating electrical interference, ensuring the accuracy of signal processing.

[0036] Specifically, communication module 9 is connected to signal processing module 8. Communication module 9 uses a combination of fiber optic communication and wireless communication. Fiber optic communication enables high-speed and stable data transmission with the substation automation system, while wireless communication enables convenient communication with mobile terminals or remote monitoring centers, allowing staff to obtain current measurement data anytime, anywhere. Communication module 9 also has a built-in communication protocol conversion module, which can convert between different communication protocols to ensure compatibility with various power equipment. Communication module 9 is also equipped with a signal enhancement antenna to enhance the strength and transmission distance of wireless communication signals, ensuring stable communication with mobile terminals or remote monitoring centers. The digital signal processed by signal processing module 8 is transmitted to communication module 9. Fiber optic communication is used for high-speed and stable data transmission with the substation automation system, while wireless communication uses the signal enhancement antenna to enhance the signal, enabling convenient communication with mobile terminals or remote monitoring centers. The communication protocol conversion module converts between different communication protocols, achieving efficient communication with the substation automation system, mobile terminals, or remote monitoring centers, enhancing wireless communication stability, and ensuring compatibility with various power equipment.

[0037] Specifically, the power supply module 10 is connected to the current measurement module 7, the signal processing module 8, and the communication module 9 via the power supply line 11. The power supply module 10 includes a solar panel 101 and a battery. The solar panel 101 provides power to the device and charges the battery under sunlight conditions. The battery provides stable power to the device when there is no sunlight or the solar panel 101 provides insufficient power. The power supply module 10 also includes a charge and discharge management circuit, which controls the charging process of the solar panel 101 to the battery and the discharging process of the battery to each module, thereby extending the battery's service life. When there is sunlight, the solar panel 101 supplies power to the device and charges the battery. When there is no sunlight or the solar panel 101 provides insufficient power, the battery supplies power. The charge and discharge management circuit controls the charging process of the solar panel 101 to the battery and the discharging process of the battery to each module, ensuring stable power supply to the device under different sunlight conditions and extending the battery's service life.

[0038] Specifically, the current measuring device body 2 also includes a fault alarm unit, which is located inside the current measuring device body 2 and connected to the signal processing module 8. When the signal processing module 8 detects an abnormal current, the fault alarm unit sends an alarm message to the staff's mobile terminal through the communication module 9. At the same time, an audible and visual alarm device is installed on the current measuring device body 2 to promptly remind on-site personnel. When the signal processing module 8 detects an abnormal current, it transmits a signal to the fault alarm unit, which then sends an alarm message to the staff's mobile terminal through the communication module 9. Simultaneously, the audible and visual alarm device on the current measuring device body 2 sounds an alarm. This timely detection of abnormal current and the use of multiple alarm methods facilitate timely fault handling by staff.

[0039] Specifically, the base 3 is provided with multiple mounting screws 12 for securely mounting the current measuring device body 2 onto the pole-mounted circuit breaker 1; the multiple mounting screws 12 on the base 3 securely mount the current measuring device body 2 onto the pole-mounted circuit breaker 1; thus achieving a secure installation of the current measuring device body 2.

[0040] Specifically, the surface of the top cover plate 5 is provided with a waterproof coating to prevent rainwater from entering the interior of the current measuring device body 2 and damaging the electrical components; the waterproof coating on the surface of the top cover plate 5 prevents rainwater from entering the interior of the current measuring device body 2; and protects the electrical components inside the current measuring device body 2 from damage due to rainwater intrusion.

[0041] The working process of this utility model is as follows: When using the integrated primary and secondary pole-mounted circuit breaker current measurement device, the main body 2 of the current measurement device is first securely installed on the pole-mounted circuit breaker 1 using multiple mounting screws 12 on the base 3. Then, multiple high-precision current transformers (located in the conductive circuits of each phase of the pole-mounted circuit breaker 1) in the current measurement module 7 collect the current signals of each phase in real time. During this process, the temperature compensation module monitors the temperature of the high-precision current transformers in real time and compensates and corrects the measurement data according to the temperature changes to improve the measurement accuracy. These high-precision current transformers adopt a ring-shaped closed structure and are made of high-permeability soft magnetic material, which can enhance anti-interference ability and measurement accuracy. The weak current signal collected by the current measurement module 7 is transmitted to the signal processing module 8 through a shielded cable. The signal amplification circuit 81 in the signal processing module 8 first amplifies the weak current signal. Then, the filtering circuit 82 filters the amplified current signal to remove noise and interference. Finally, the analog-to-digital conversion circuit 83 converts the filtered analog current signal into a digital signal. Meanwhile, the signal isolation circuit isolates the signal processing module 8 from electrical interference with other circuits, ensuring the accuracy of signal processing; the digital signal processed by the signal processing module 8 is transmitted to the communication module 9. The communication module 9 adopts a combination of fiber optic communication and wireless communication. Fiber optic communication is used to achieve high-speed and stable data transmission with the substation automation system; wireless communication uses a signal enhancement antenna to enhance signal strength and transmission distance, enabling convenient communication with mobile terminals or remote monitoring centers. The communication module 9 has a built-in communication protocol conversion module that can convert between different communication protocols, ensuring compatibility with various power equipment; the power supply module 10 provides power support for the entire device. Under sunlight conditions, the solar panels 101 (located on the left and right sides of the top cover 5) provide power to the device and charge the battery; when there is no sunlight or the solar panels 101 provide insufficient power, the battery provides stable power to the device. The charge and discharge management circuit controls the charging process of the solar panels 101 to the battery and the discharging process of the battery to each module, extending the battery's service life; when the signal processing module 8 detects an abnormal current, it transmits the abnormal signal to the fault alarm unit (located inside the current measuring device body 2). The fault alarm unit sends alarm information to the staff's mobile terminal through the communication module 9, and triggers the audible and visual alarm device on the current measuring device body 2 to promptly remind on-site personnel; the waterproof coating on the surface of the top cover plate 5 can prevent rainwater from entering the interior of the current measuring device body 2 and protect the internal electrical components.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A primary and secondary integrated pole-mounted circuit breaker current measuring device, comprising a pole-mounted circuit breaker (1) and a current measuring device body (2) fixedly mounted thereon, characterized in that: The current measuring device body (2) includes a base (3) at its bottom, and a support frame (4) distributed on the left and right sides is fixedly installed on the top of the base (3). A top cover plate (5) is fixedly installed on the top of the support frame (4) on both sides. A solar panel (6) is provided on the left and right sides of the top cover plate (5). The current measuring device body (2) is also provided with a current measuring module (7), a signal processing module (8), a communication module (9) and a power supply module (10). The current measurement module (7) is integrated inside the current measurement device body (2) and includes multiple high-precision current transformers. The multiple high-precision current transformers are respectively set in each phase conductive circuit of the pole-mounted circuit breaker (1) for real-time acquisition of each phase current signal. The signal processing module (8) is connected to the current measurement module (7) via a shielded cable. The signal processing module (8) includes a signal amplification circuit (81), a filtering circuit (82), and an analog-to-digital conversion circuit (83). The signal amplification circuit (81) is used to amplify the weak current signal collected by the current measurement module (7). The filtering circuit (82) is used to filter the amplified current signal to remove noise and interference from the signal. The analog-to-digital conversion circuit (83) is used to convert the filtered analog current signal into a digital signal. The communication module (9) is connected to the signal processing module (8). The communication module (9) adopts a combination of optical fiber communication and wireless communication. Optical fiber communication is used to realize high-speed and stable data transmission with the substation automation system, and wireless communication is used to realize convenient communication with mobile terminals or remote monitoring centers so that staff can obtain current measurement data anytime and anywhere. The communication module (9) also has a built-in communication protocol conversion module, which can realize the conversion between different communication protocols to ensure compatibility with various power equipment. The power supply module (10) is connected to the current measurement module (7), the signal processing module (8) and the communication module (9) respectively through the power supply line (11). The power supply module (10) includes a solar panel (6) and a storage battery. The solar panel (6) is used to provide power to the device under sunlight and to charge the storage battery. The storage battery is used to provide stable power to the device when there is no sunlight or when the power supply from the solar panel (6) is insufficient.

2. The primary and secondary integrated pole-mounted circuit breaker current measuring device according to claim 1, characterized in that: The multiple high-precision current transformers inside the current measurement module (7) adopt an annular closed structure and are made of soft magnetic material with high permeability to improve the accuracy of measurement and anti-interference ability.

3. The primary and secondary integrated pole-mounted circuit breaker current measuring device according to claim 1, characterized in that: The current measurement module (7) also includes a temperature compensation module, which is used to monitor the temperature of the high-precision current transformer in real time and compensate and correct the measurement data according to the temperature change to improve the measurement accuracy.

4. The primary and secondary integrated pole-mounted circuit breaker current measuring device according to claim 1, characterized in that: The signal processing module (8) is also provided with a signal isolation circuit to isolate electrical interference between the signal processing module (8) and other circuits, so as to ensure the accuracy of signal processing.

5. The primary and secondary integrated pole-mounted circuit breaker current measuring device according to claim 1, characterized in that: The communication module (9) is also equipped with a signal enhancement antenna to enhance the strength and transmission distance of wireless communication signals and ensure the stability of communication with mobile terminals or remote monitoring centers.

6. The primary and secondary integrated pole-mounted circuit breaker current measuring device according to claim 1, characterized in that: The power supply module (10) also includes a charge and discharge management circuit, which controls the charging process of the solar panel (6) to the battery and the discharging process of the battery to each module, thereby extending the battery's service life.

7. The primary and secondary integrated pole-mounted circuit breaker current measuring device according to claim 1, characterized in that: The current measuring device body (2) also includes a fault alarm unit. The fault alarm unit is located inside the current measuring device body (2) and is connected to the signal processing module (8). When the signal processing module (8) detects an abnormal current, the fault alarm unit sends an alarm message to the staff's mobile terminal through the communication module (9). At the same time, an audible and visual alarm device is installed on the current measuring device body (2) to promptly remind on-site personnel.

8. The primary and secondary integrated pole-mounted circuit breaker current measuring device according to claim 1, characterized in that: The base (3) is provided with a plurality of mounting screws (12) for securing the current measuring device body (2) to the pole-mounted circuit breaker (1).

9. The primary and secondary integrated pole-mounted circuit breaker current measuring device according to claim 1, characterized in that: The surface of the top cover plate (5) is provided with a waterproof coating to prevent rainwater from entering the body (2) of the current measuring device and damaging the electrical components.

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