CN210722907U - Circuit breaker with at least two poles - Google Patents

Abstract

The utility model discloses a circuit breaker with at least two poles, which comprises a casing, at least one phase pole is arranged in the casing, and the phase pole comprises a phase pole moving contact, a phase pole static contact and a phase pole arc extinguishing chamber , phase-pole manual operating mechanism, phase-pole free tripping mechanism, at least one overcurrent protection release and terminal for incoming and outgoing wires, and N pole, current detection element, voltage detection element and at least one electronic Monitoring unit, the N pole includes N pole moving contact, N pole static contact, N pole manual operating mechanism, incoming and outgoing wire terminals, and the electronic monitoring unit is provided with a carrier communication module. The circuit breaker of the utility model can collect user-side voltage, current, residual current, temperature, power, electricity amount and various power consumption fault alarm information, deeply perceive the user-side power consumption information, and upload the user-side power consumption information to the power grid cloud platform , to realize the timely perception and comprehensive coverage of power consumption information on the user side of the Internet of Things in the power grid.

Description

A circuit breaker having at least two poles

technical field

The utility model relates to the field of low-voltage electrical appliances, in particular to a circuit breaker with at least two poles with a carrier communication function.

Background technique

At present, the application of the Internet of Things in the power grid has a certain foundation, but there are still some deficiencies compared with the improvement goals of "holographic perception, ubiquitous connection, open sharing, and integrated innovation" of the ubiquitous power Internet of Things. One of them is that the depth and breadth of user status perception is insufficient, the collection and coverage of power distribution information is incomplete, the perception of user electricity consumption information is not timely, comprehensive, and refined, and the perception coverage of equipment status and environmental quantities is insufficient; distributed energy and various types of renewable energy Insufficient perceptual control ability to control load.

SUMMARY OF THE INVENTION

In view of the above problems, the present utility model adopts a unique technical solution to deeply perceive the power consumption information on the user side, and upload the power consumption information on the user side to the power grid cloud platform, so as to realize the timely, comprehensive and precise perception of the power consumption information on the power grid Internet of Things user side. , to expand the awareness coverage of equipment status and environment. The intelligent miniature circuit breaker with carrier communication function is "connected and ready to use", supports accurate low-voltage fault judgment at home, provides accurate information for line fault repair, and improves the lean management level of low-voltage distribution network.

The utility model is mainly realized through the following technical solutions:

A circuit breaker with at least two poles, including a casing, at least one phase pole is arranged in the casing, and the phase pole includes a phase pole moving contact, a phase pole static contact, a phase pole arc extinguishing chamber, a phase pole manual An operating mechanism, a phase-pole free tripping mechanism, at least one overcurrent protection release, and an incoming and outgoing wire terminal, and an N pole, a current detection element, a voltage detection element and at least one electronic monitoring unit are also arranged in the housing, so The N pole includes an N pole moving contact, an N pole static contact, an N pole manual operating mechanism, and a terminal for incoming and outgoing wires, and the electronic monitoring unit is provided with a carrier communication module.

Preferably, an electric operating mechanism is further provided in the N pole.

Preferably, the current detection element and the voltage detection element are respectively connected to the electronic monitoring unit, and can transmit their output signals to the electronic monitoring unit, and the electronic monitoring unit further includes a control module, which receives the The signal is converted and calculated and then transmitted to the carrier communication module, and the carrier communication module communicates with the concentrator and/or the monitoring terminal of the distribution transformer and/or the intelligent communication device.

Preferably, the carrier communication module receives the remote operation instruction, transmits it to the control module, and after calculation, transmits it to the execution module provided on the electronic monitoring unit, and the execution module drives the electric operating mechanism to execute the corresponding operation instruction.

Preferably, the carrier communication module receives a remote setting instruction and transmits it to the control module, and the control module calculates and transmits it to the RAM and/or ROM set on the electronic monitoring unit to update the corresponding setting threshold or program version.

Preferably, the carrier communication module has an encryption algorithm.

Preferably, the electronic monitoring unit collects the state quantity of the circuit breaker.

Preferably, the state quantities of the circuit breaker include: closing, opening and tripping.

Preferably, the carrier communication module receives the closing or opening signal and transmits it to the control module;

The control module sends out action commands to drive the electric operating mechanism (14) to perform corresponding closing or opening actions;

The sensing module feeds back a corresponding signal to the control module, and the control module determines whether the execution of the action is successful or not and sends corresponding action execution result information to the carrier communication module.

The beneficial effects of the present utility model are as follows:

1. The circuit breaker with the carrier communication module can collect the user-side voltage, current, residual current, temperature, power, electric quantity and various power failure alarm information, deeply perceive the user-side power consumption information, and upload the user-side power consumption information The power grid cloud platform realizes the timely, comprehensive and precise perception of power consumption information on the user side of the power grid Internet of Things, and expands the coverage of equipment status and environmental perception;

2. The circuit breaker with carrier communication has automatic opening and closing function;

3. While the carrier communication ensures the communication quality, it also avoids the problem of wall penetration, effectively avoids the problem of equipment erection and transformation, and saves costs;

4. The circuit breaker with carrier communication function is "connected and ready to use";

5. Support accurate home-based low-voltage fault judgment, provide accurate information for line fault repair, and improve the lean management level of low-voltage distribution networks.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the drawings in the following description are only some implementations of the present invention. For example, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.

FIG. 1 is a schematic diagram of the overall structure of the circuit breaker of the present invention.

FIG. 2 is a schematic diagram of the internal structure of the N pole of the circuit breaker of the present invention.

3 is a schematic diagram of the internal structure of the phase pole of the circuit breaker of the present invention.

4 is a schematic diagram of the internal structure of the circuit breaker of the present invention.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

The circuit breaker with at least two poles with carrier communication function according to the present invention is used for monitoring and uploading user side power consumption information. After the user side power consumption information is processed by the circuit breaker, the processing result is uploaded to the power grid cloud platform. The circuit breaker of the utility model has the functions of automatic opening and closing, voltage and current detection, residual current detection, load identification, arc fault identification, temperature monitoring and communication.

Referring to FIG. 1 to FIG. 4 , this embodiment discloses a circuit breaker with at least two poles with carrier communication function. The circuit breaker includes N pole 1 , at least one phase pole 2 , and a casing 3 . The N pole 1 and at least one phase pole 2 are arranged in the casing 3 . In the N pole, an N pole moving contact 11, a N pole static contact 12, an N pole manual operating mechanism 13, an electric operating mechanism 14, and a N pole incoming and outgoing wire terminal 15 are arranged; the electrical operating mechanism 14 includes a motor 141 and the gear set 142, the motor 141 drives the gear set 142 forward and reverse after receiving the command, the gear set 142 drives the handle 131, and then drives the N-pole manual operating mechanism 13 to drive the N-pole moving contact 11 and the The N pole static contact 12 is opened or closed, so as to realize the automatic opening and closing of the circuit breaker.

As shown in FIG. 3 , the phase pole 2 is provided with a phase pole moving contact 21 , a phase pole static contact 22 , a phase pole arc extinguishing chamber 23 , a phase pole manual operating mechanism 24 , and a phase pole free trip mechanism 25 , At least one overcurrent protection release 26 , terminal 27 for incoming and outgoing lines. The phase-pole manual operating mechanism 24 can drive the phase-pole moving contacts 21 and the phase-pole static contacts 22 to close or open, so as to realize the opening or closing of the circuit breaker. When the phase-pole moving contact 21 and the phase-pole stationary contact 22 are disconnected, the arc generated during disconnection can be cooled and cut in the phase-pole arc extinguishing chamber 23, thereby achieving the purpose of arc extinguishing. The phase-pole free trip mechanism 25 can disconnect the phase-pole moving contacts 21 and the phase-pole static contacts 22 when the circuit breaker encounters faults such as overload and short circuit, so as to achieve the purpose of protecting the circuit breaker, In addition, the phase-pole free trip mechanism 25 has instantaneous and time-delay trip protection functions. The overcurrent protection release 26 can ensure that the circuit breaker can be quickly disconnected when a large current occurs, so as to avoid expanding the scope of the accident.

As shown in FIG. 4 , the housing 3 formed by the N pole 1 and the at least one phase pole 2 further includes a current detection element 4 , a voltage detection element 5 and at least one electronic monitoring unit 6 , on the electronic monitoring unit 6 A carrier communication module 61 is provided. The carrier communication module 61 can save communication wiring by means of carrier communication or injecting high-frequency signals into the conducting wires, and sharing the conducting wires to realize power transmission and communication transmission. The electronic monitoring unit 6 also includes a control module 62 and an execution module 63. The output signals of the current detection element 4 and the voltage detection element 5 are respectively transmitted to the electronic monitoring unit 6, and are converted by the control module 62 provided on the electronic monitoring unit 6. After the calculation, it is transmitted to the carrier communication module 61, and the carrier communication module 61 communicates with the concentrator and/or the distribution transformer monitoring terminal and/or the intelligent communication device.

The control module 62 includes at least one integrated circuit and has the function of data processing and operation. The output signals of the current detection element 4 and the voltage detection element 5 are converted through analog-to-digital conversion, so that the analog quantity is changed into a digital quantity, which is convenient for the control module 62 to perform the transformation. Liye transform, wavelet transform, edge computing and other analysis and processing, and then can effectively identify the input or withdrawal of a certain electrical equipment by capturing the load power change, and then obtain the power consumption ratio of each electrical equipment inside the load. The data processed by the control module 62 can be uploaded to the power grid cloud platform.

Specifically, the current detection element 4 includes at least one of a current transformer, a current sensor or a zero-sequence current transformer, and the detected signal includes the user-side main circuit current and residual current information. The voltage detection element 5 is connected to the main circuit to measure the circuit voltage, and the detected signal includes the user side voltage. The control module 62 can decompose and combine the detected signals such as current, residual current, and voltage, and obtain information such as power, electric quantity, non-intrusive load identification, arc fault identification and other information through calculation of preset values. The intelligent circuit breaker with carrier communication function can avoid fire, electric shock, explosion, electric shock and other accidents caused by hidden dangers of the circuit to a certain extent by transmitting the above information and combining with the algorithm of the upper platform.

The carrier communication module 61 can receive remote operation instructions, and the remote operation instructions are transmitted to the control module 62. After the control module 62 calculates, it is transmitted to the execution module 63 provided on the electronic monitoring unit 6. The execution module 63 drives the electric operating mechanism 14 to execute the corresponding operation instructions. .

Further, the carrier communication module 61 receives the remote setting instruction and transmits it to the control module 62. The control module 62 calculates and transmits it to the RAM/ROM set on the electronic monitoring unit 6 to update the corresponding setting threshold or program version.

The carrier communication module 61 has an encryption algorithm, which is used to encrypt the detection information of the current detection element 4 and the voltage detection element 5, and then transmit the encrypted detection information to the upper level (concentrator and/or distribution transformer monitoring terminal and/or intelligent communication device), receive the information/or instructions transmitted by the superior (concentrator and/or distribution transformer monitoring terminal and/or intelligent communication device), and perform decryption, signature, signature verification, identity authentication, At least one of access control and communication line protection operations.

When a short-circuit fault occurs in the line, the output signals of the current detection element 4 and the voltage detection element 5 can be transmitted to the control module 62 provided on the electronic monitoring unit 6, and the control module 62 calculates and transmits it to the electronic monitoring unit 6 for execution. Module 63, the execution module 63 drives the electric operating mechanism 14 to perform the opening action, and the carrier communication module 61 transmits a short-circuit fault signal to the power grid cloud platform. When the power grid fault is repaired, it can be accurate to the home and accurately locate the accident. At the location of occurrence, the intelligent circuit breaker with carrier communication function can improve the lean management level of the low-voltage distribution network.

When an overvoltage or undervoltage fault occurs in the circuit, the output signals of the current detection element 4 and the voltage detection element 5 can be transmitted to the control module 62 provided on the electronic monitoring unit 6, and the control module 62 calculates and transmits it to the electronic monitoring unit 6 The execution module 63 provided on the above, the execution module 63 drives the electric operating mechanism 14 to perform the opening action, and the carrier communication 61 transmits a short-circuit fault signal to the power grid cloud platform. When the voltage is restored, the output signals of the current detection element 4 and the voltage detection element 5 are transmitted to the control module 62, and the control module 62 calculates and transmits it to the execution module 63 provided on the electronic monitoring unit 6, and the execution module 63 drives the electric operating mechanism 14 Execute the closing action, and the detection signal in the fault process is transmitted to the power grid cloud platform through the carrier communication 61 .

A sensing module 7 is also arranged inside the circuit breaker, and the sensing module 7 includes a temperature sensor. The temperature sensor can monitor the temperature of the key electrical contacts and transmit it to the control module 62 for processing. If the pre-warning value is exceeded, the carrier communication module 61 can transmit the signal to the power grid cloud platform for fault pre-warning. If the temperature exceeds the alarm protection value , the control module 62 transmits the signal to the execution module 63, and the execution module 63 drives the electric operating mechanism 14 to perform the opening action, so as to protect the circuit safety and avoid fire due to electrical reasons, causing personal injury or property damage. To sum up, the provision of temperature information enables relevant personnel to intervene before the occurrence of fire and explosion, so as to avoid the occurrence of disasters.

The electronic monitoring unit 6 can collect the state quantity of the intelligent circuit breaker; the state quantity includes opening, closing and tripping, such as whether the phase-pole moving contact 21 and the phase-pole static contact 22 are in contact, and feedback the feedback. The electrical signal is passed to the control module 62 of the electronic monitoring unit 6 .

The carrier communication module 61 adopts the carrier communication mode to effectively avoid the problem of equipment erection and reconstruction, and save the cost.

According to different frequency bands, power line carrier communication is divided into two types: broadband power line carrier communication and narrowband power line communication. The frequency band used by the narrowband power line communication technology is 10kHz~500kHz, and the frequency band used by the broadband power line communication technology is 2MHz~20MHz. Broadband power line carrier communication technology is the most emerging carrier technology. Compared with the original narrowband power line carrier communication, broadband technology has great advantages:

1. The low-voltage power line broadband carrier routing design is more reasonable, and the channel construction investment is relatively low.

2. The channel bandwidth of the low-voltage power line broadband carrier is wider, the transmission rate is higher, and the performance is better than that of the narrowband carrier.

3. The transmission frequency band of the low-voltage power line broadband carrier is not limited, and the frequency band is adaptive within the bandwidth range.

4. The low-voltage power line broadband carrier has little interference from the external power network. The low-voltage power line carrier interference frequency band is limited to less than 1MHz, while the low-voltage power line broadband carrier is established with a bandwidth of more than 1MHz. Its basic frequency band is 1MHz~20MHz, and the extended frequency band is 3MHz~ 100MHz, therefore, this technology can effectively avoid interference to the outside world. The carrier communication ensures the communication quality while avoiding the problem of wall penetration. It can be seen that the power line carrier communication is the best choice for the communication mode in the power system.

When the intelligent circuit breaker with carrier communication function is used together with the prepaid electric energy meter, when the balance of the prepaid electric energy meter is insufficient, the intelligent WeChat circuit breaker with the carrier communication function is tripped, and the signal transmission process is that the insufficient balance of the electric energy meter is transmitted to the electronic The control module 62 set on the monitoring unit 6, the control module 62 calculates and transmits it to the execution module 63 set on the electronic monitoring unit 6, and drives the electric operating mechanism 14 to perform the opening action, and the carrier communication 61 transmits the arrears signal to the power grid cloud. platform. When the electricity is re-purchased and recharged to the prepaid electric energy meter, the recharge information is transmitted to the control module 62, and the control module 62 calculates and transmits it to the execution module 63 provided on the electronic monitoring unit 6, and the execution module 63 drives the electric operating mechanism 14 to perform closing Action, power recovery. The arrears recharge information in the process of power failure and power restoration is transmitted to the power grid cloud platform through the carrier communication 61 . The intelligent miniature circuit breaker with carrier communication function is used together with the prepaid electric energy meter to realize arrears tripping, and the electricity will be restored after the renewal.

The present invention may be implemented in other specific forms without departing from its spirit and essential characteristics. The present embodiments are to be considered in all respects as illustrative and not restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description, and falls within the meaning and scope of equivalents of the claims All changes within are thus included in the scope of the present invention.

The above are only preferred embodiments of the present invention, and those skilled in the art can make various changes or modifications to the embodiments of the present invention according to the contents disclosed in the application documents without departing from the spirit and scope of the present invention.

Claims (9)

1. A circuit breaker having at least two poles, comprising a casing (3), wherein at least one phase pole (2) is provided in the casing (3), the phase pole (2) comprising a phase pole moving contact (21) ), phase pole static contact (22), phase pole arc extinguishing chamber (23), phase pole manual operating mechanism (24), phase pole free trip mechanism (25), at least one overcurrent protection release (26) and the terminal (27) for the incoming and outgoing wires, the N pole (1), the current detecting element (4), the voltage detecting element (5) and at least one electronic monitoring unit (6) are also arranged in the casing (3), so The N pole (1) includes an N pole moving contact (11), an N pole static contact (12), an N pole manual operating mechanism (13), and an incoming and outgoing wire terminal (15), characterized in that the electronic monitoring The unit (6) is provided with a carrier communication module (61). 2 . The circuit breaker with at least two poles according to claim 1 , wherein an electric operating mechanism ( 14 ) is further provided in the N pole ( 1 ). 3 . 3. A circuit breaker with at least two poles according to claim 1 or 2, characterized in that: the current detection element (4) and the voltage detection element (5) are respectively connected with the electronic monitoring unit ( 6) connected, and can transmit its output signal to the electronic monitoring unit (6), the electronic monitoring unit (6) also includes a control module (62), the control module (62) receives the signal and converts and calculates It is passed to the carrier communication module (61), and the carrier communication module (61) communicates with the concentrator and/or the distribution transformer monitoring terminal and/or the intelligent communication device. 4. The circuit breaker with at least two poles according to claim 3, characterized in that: the carrier communication module (61) receives a remote operation instruction, transmits it to the control module (62), and transmits it after calculation The execution module (63) provided on the electronic monitoring unit (6) is driven by the execution module (63) to drive the electric operating mechanism (14) to execute corresponding operation instructions. 5. A circuit breaker with at least two poles according to claim 3, characterized in that: the carrier communication module (61) receives a remote setting instruction, and transmits it to the control module (62), and the control module (62) After the calculation, it is passed to the RAM and/or ROM set on the electronic monitoring unit (6), and the corresponding set threshold or program version is updated. 6 . The circuit breaker with at least two poles according to claim 1 , wherein the carrier communication module ( 61 ) has an encryption algorithm. 7 . 7 . The circuit breaker with at least two poles according to claim 1 , wherein the electronic monitoring unit ( 6 ) collects the state quantity of the circuit breaker. 8 . 8 . The circuit breaker with at least two poles according to claim 7 , wherein the state quantities of the circuit breaker include: closing, opening and tripping. 9 . The circuit breaker with at least two poles according to claim 3, characterized in that: the carrier communication module (61) receives a closing or opening signal and transmits it to the control module (62); The control module (62) sends out action commands to drive the electric operating mechanism (14) to perform corresponding closing or opening actions; The sensing module (7) feeds back a corresponding signal to the control module (62), and the control module (62) determines whether the execution of the action is successful or not and sends corresponding action execution result information to the carrier communication module (61).

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