CN221150640U - Intelligent low-voltage switch cabinet - Google Patents

Abstract

The utility model discloses an intelligent low-voltage switch cabinet which comprises a cabinet body, a bus arranged in the cabinet body, a circuit breaker connected with the bus, a monitoring unit, a data acquisition unit and a sensor unit, wherein the bus is connected with the monitoring unit; the data acquisition unit is respectively in communication connection with the sensor unit and the monitoring unit; the data acquisition unit is also connected with a circuit breaker. According to the intelligent low-voltage switch cabinet, through communication connection among the sensor unit, the data acquisition unit and the monitoring unit, the internal environment temperature parameter, the internal environment humidity parameter, the bus temperature parameter, the bus electrical parameter and the circuit breaker temperature parameter of the cabinet are monitored in real time; the circuit breaker is connected to the data acquisition unit, the switching-on and switching-off state parameter, the short circuit state parameter, the grounding protection state parameter and the working position state parameter of the circuit breaker are monitored in real time, the intelligent degree of the low-voltage switch cabinet is improved, the daily maintenance of the low-voltage switch cabinet is convenient, and the requirements of users on high power supply reliability and digital construction can be met.

Description

Intelligent low-voltage switch cabinet

Technical Field

The utility model relates to the technical field of switch cabinets, in particular to an intelligent low-voltage switch cabinet.

Background

The low-voltage switch cabinet is suitable for industries such as power plants, petroleum, chemical industry, metallurgy, textile, high-rise buildings and the like, and is used for power transmission, power distribution and electric energy conversion. Due to the problems of equipment part quality, operation specification and the like, the operation failure rate of the traditional low-voltage switch cabinet is as high as 3.8 percent. Moreover, the intelligent degree of the traditional low-voltage switch cabinet is low, the temperature and humidity of the internal environment of the cabinet body, the electric operation parameters and the operation state of the circuit breaker cannot be monitored in real time, so that maintenance is difficult, and the requirements of users on high power supply reliability and digital construction cannot be met.

Disclosure of utility model

The utility model aims to solve the technical problem of providing an improved intelligent low-voltage switch cabinet.

The technical scheme adopted for solving the technical problems is as follows: the intelligent low-voltage switch cabinet comprises a cabinet body, a bus arranged in the cabinet body, a circuit breaker arranged in the cabinet body and connected with the bus, a monitoring unit, a data acquisition unit and a sensor unit for acquiring operation state parameters of the intelligent low-voltage switch cabinet;

the intelligent low-voltage switch cabinet operation state parameters comprise cabinet internal environment temperature parameters, cabinet internal environment humidity parameters, bus temperature parameters, bus electrical parameters and breaker temperature parameters;

The data acquisition unit is respectively in communication connection with the sensor unit and the monitoring unit, receives the running state parameters of the intelligent low-voltage switch cabinet from the sensor unit and then transmits the running state parameters to the monitoring unit; the data acquisition unit is also connected with the circuit breaker, and the circuit breaker operation state parameters are transmitted to the monitoring unit after being obtained, wherein the circuit breaker operation state parameters comprise an opening and closing state parameter, a short circuit state parameter, a grounding protection state parameter and a working position state parameter.

Preferably, the sensor unit comprises an ambient temperature sensor, an ambient humidity sensor, a temperature measurement sensor and a current transformer which are respectively in communication connection with the data acquisition unit;

The environment temperature sensor collects the internal environment temperature parameter of cabinet, the environment humidity sensor collects the internal environment humidity parameter of cabinet, the temperature sensor collects busbar temperature parameter and circuit breaker temperature parameter, the current transformer gathers busbar electrical parameter.

Preferably, the temperature sensor comprises a wired temperature sensor for acquiring the temperature parameter of the circuit breaker and a wireless temperature sensor for acquiring the temperature parameter of the bus.

Preferably, the data acquisition unit comprises an intelligent instrument, a temperature and humidity controller and a wireless temperature measuring device;

The intelligent instrument is respectively in communication connection with the current transformer, the wired temperature measuring sensor and the monitoring unit;

The temperature and humidity controller is respectively in communication connection with the ambient temperature sensor, the ambient humidity sensor and the monitoring unit;

The wireless temperature measuring device is respectively connected with the wireless temperature measuring sensor and the monitoring unit in a communication way;

the intelligent instrument is also connected with the circuit breaker to obtain the running state parameters of the circuit breaker.

Preferably, the data acquisition unit further comprises a power quality analysis device, and the power quality analysis device is in communication connection with the current transformer; the power quality analysis device is also connected with the bus.

Preferably, the cabinet body comprises a bus bar chamber, a control chamber, a circuit breaker chamber, a cable chamber and a front lower chamber which are mutually separated.

Preferably, the intelligent low-voltage switch cabinet further comprises a camera arranged in the bus bar chamber and/or the cable chamber.

Preferably, the circuit breaker comprises a circuit breaker body and a circuit breaker pile head which are connected, and the temperature sensor is used for collecting the temperature of the circuit breaker pile head as the temperature parameter of the circuit breaker.

Preferably, the monitoring unit comprises an industrial personal computer; the industrial personal computer is arranged in the cabinet body or outside the cabinet body; the data acquisition unit is in communication connection with the industrial personal computer;

And/or the monitoring unit comprises a remote monitoring computer, wherein the remote monitoring computer is positioned outside the cabinet body; the data acquisition unit is in communication connection with the remote monitoring computer.

Preferably, the intelligent low-voltage switch cabinet further comprises a communication manager, the communication manager is respectively in communication connection with the data acquisition unit and the monitoring unit, data acquired by the data acquisition unit are collected in a concentrated mode, and the data acquired by the data acquisition unit are screened and then transmitted to the monitoring unit.

The utility model has at least the following beneficial effects: according to the intelligent low-voltage switch cabinet, the sensor unit, the data acquisition unit and the monitoring unit are in communication connection, the internal environment temperature parameter, the internal environment humidity parameter, the bus temperature parameter, the bus electrical parameter and the circuit breaker temperature parameter of the cabinet are monitored in real time, the circuit breaker is connected to the data acquisition unit, the opening and closing state parameter, the short circuit state parameter, the grounding protection state parameter and the working position state parameter of the circuit breaker are monitored in real time, the intelligent degree of the low-voltage switch cabinet is improved, the environment and the humidity of the internal environment of the switch cabinet are facilitated, the equipment faults and fault reasons are timely identified, the daily maintenance of the low-voltage switch cabinet is facilitated, and the requirements of a user on high power supply reliability and digital construction can be met.

Drawings

The utility model will be further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a schematic diagram of the overall structure of an intelligent low-voltage switchgear according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of the internal structure of an intelligent low-voltage switchgear according to an embodiment of the present utility model;

fig. 3 is a schematic diagram of a device connection relationship of an intelligent low-voltage switchgear according to an embodiment of the present utility model.

Detailed Description

For a clearer understanding of technical features, objects and effects of the present utility model, a detailed description of embodiments of the present utility model will be made with reference to the accompanying drawings.

Fig. 1 and 2 show an intelligent low-voltage switch cabinet according to an embodiment of the utility model, which comprises a cabinet body 4, a bus 5 and a breaker 6, wherein the bus 5 and the breaker 6 are arranged in the cabinet body 4, and the breaker 6 is connected with the bus 5. Specifically, the circuit breaker 6 includes a contiguous circuit breaker body 60 and a circuit breaker head 61. The breaker body includes a controller, an auxiliary switch, and a position switch. As shown in the schematic diagram of the connection relationship of the devices in fig. 3, the intelligent low-voltage switch cabinet further comprises a monitoring unit 3, a data acquisition unit 2 and a sensor unit 1. The data acquisition unit 2 and the sensor unit 1 are both arranged in the cabinet body 4. The monitoring unit 3 may be partially disposed in the cabinet body 4, partially disposed outside the cabinet body 4, or may be entirely disposed in the cabinet body 4, or entirely disposed outside the cabinet body 4.

As shown in fig. 2 and 3, the sensor unit 1 is configured to collect an intelligent low-voltage switch cabinet operation state parameter, where the intelligent low-voltage switch cabinet operation state parameter includes a cabinet internal environment temperature parameter, a cabinet internal environment humidity parameter, a bus temperature parameter, a bus electrical parameter, and a circuit breaker temperature parameter. The bus electrical parameters include parameters of the bus 5 such as current, voltage, active, reactive, power factor, frequency, harmonics, etc. The circuit breaker temperature parameter can be represented through the temperature of the circuit breaker pile head 61, and the circuit breaker pile head 61 is a movable plug-in position of a circuit breaker drawing frame and a circuit breaker core, belongs to a key position in the circuit breaker 6, is provided with a lap joint bolt, has small heat dissipation space and is easy to raise in temperature, so that the temperature at the circuit breaker pile head 61 can be collected through the sensor unit 1 to serve as the circuit breaker temperature parameter, and faults or potential safety hazards caused by overhigh temperature at the key position of the circuit breaker 6 are avoided.

As shown in fig. 2 and 3, the data acquisition unit 2 is respectively connected with the sensor unit 1 and the monitoring unit 3 in a communication way, and receives the operation state parameters of the intelligent low-voltage switch cabinet from the sensor unit 1 and then transmits the operation state parameters to the monitoring unit 3. The data acquisition unit 2 is also connected with the circuit breaker 6 at the same time, and the circuit breaker operation state parameters are transmitted to the monitoring unit 3 after being obtained, wherein the circuit breaker operation state parameters comprise an opening and closing state parameter, a short circuit state parameter, a grounding protection state parameter and a working position state parameter. In particular, the circuit breaker 6 may be a drawer-type circuit breaker. The opening and closing state parameter may be used to characterize whether the circuit breaker 6 is in an opening state or in a closing state. The short-circuit status parameter may be used to characterize whether the circuit breaker 6 is shorted. The ground protection status parameter may be used to characterize whether the circuit breaker 6 is grounded properly. The operating position status parameter may be used to characterize the real-time operating position of the circuit breaker 6. For example, the drawer-type circuit breaker 6 has three operating positions, namely a "connected" position, a "test" position and a "disconnected" position, in which both the primary circuit and the secondary circuit are closed. When in the "test" position, the main circuit is open and separated by an insulating separator, and only the secondary circuit is closed, allowing some necessary action tests to be performed. When in the "split" position, the primary and secondary circuits are all open.

The monitoring unit 3 is used for recording and displaying the operation state parameters of the switch cabinet and the operation state parameters of the circuit breaker.

The sensor unit 1, the data acquisition unit 2 and the monitoring unit 3 can be connected by adopting communication cables so as to realize communication connection among the three.

According to the intelligent low-voltage switch cabinet, through the communication connection among the sensor unit 1, the data acquisition unit 2 and the monitoring unit 3, the operation state parameters (including the internal environment temperature parameter of the cabinet, the internal environment humidity parameter of the cabinet, the bus temperature parameter, the bus electrical parameter and the circuit breaker temperature parameter) of the switch cabinet are monitored in real time, the circuit breaker 6 is connected to the data acquisition unit 2, the operation state parameters (including the opening and closing state parameter, the short circuit state parameter, the grounding protection state parameter and the working position state parameter) of the circuit breaker are monitored in real time, the intelligent degree of the intelligent low-voltage switch cabinet is improved, the operation state parameters of the switch cabinet and the operation state parameters of the circuit breaker are monitored, the environment and humidity of the internal environment of the switch cabinet are facilitated, equipment faults and fault reasons are timely identified, the daily maintenance of the intelligent low-voltage switch cabinet is facilitated, and the requirements of a user on high power supply reliability and digital construction can be met. In addition, in the intelligent low-voltage switchgear, the circuit breaker 6 is an important component, and is also a core component for daily maintenance. By monitoring the breaker temperature parameter and the breaker operation state parameter, the real-time operation state of the breaker 6 can be comprehensively mastered, which is beneficial to ensuring the stable operation of the core component.

In this embodiment, the sensor unit 1 includes an ambient temperature sensor 10, an ambient humidity sensor 11, a temperature sensor, and a current transformer 12, which are communicatively connected to the data acquisition unit 2, respectively. The environment temperature sensor 10, the environment humidity sensor 11, the temperature measuring sensor and the current transformer 12 are all arranged in the cabinet body 4. The environment temperature sensor 10 collects the internal environment temperature parameter of the cabinet, the environment humidity sensor 11 collects the internal environment humidity parameter of the cabinet, the temperature sensor collects the bus temperature parameter and the circuit breaker temperature parameter, and the current transformer 12 collects the bus electrical parameter.

The environmental temperature sensor 10 and the environmental humidity sensor 11 may be two devices respectively having a temperature data acquisition function and a humidity data acquisition function, for example, one temperature sensor and one humidity sensor are adopted, the temperature sensor is used for acquiring an internal environmental temperature parameter of the cabinet, and the humidity sensor is used for acquiring an internal environmental humidity parameter of the cabinet; temperature and humidity sensors are prior art and thus reference may be made to prior art temperature and humidity sensor configurations.

The environmental temperature sensor 10 and the environmental humidity sensor 11 may also be integrated devices, for example, a temperature and humidity sensor is adopted, and the temperature and humidity sensor has a temperature data acquisition function and a humidity data acquisition function at the same time, so that the environmental temperature parameter in the cabinet body and the environmental humidity parameter in the cabinet body can be acquired at the same time. Specifically, the temperature and humidity sensor can be a temperature and humidity sensor matched with a temperature and humidity controller with the model of W2S2D-Z3 AS.

The temperature sensor is arranged at the positions of the bus 5 and the circuit breaker 6 and is used for collecting the temperature parameters of the bus and the temperature parameters of the circuit breaker. A current transformer 12 is mounted on the periphery of the busbar 5 for collecting busbar electrical parameters such as current, voltage, active, reactive, power factor, frequency, harmonics, etc. Specifically, the temperature sensor collects the temperature of the breaker pile head 61 as a breaker temperature parameter. The current transformer 12 may be a DH-0.66 type current transformer.

Further, as shown in FIG. 2, the thermometry sensors may include a wired thermometry sensor 131 and a wireless thermometry sensor 132. The wired temperature sensor 131 and the wireless temperature sensor 132 are both arranged in the cabinet body 4. The wired temperature sensor 131 is used to collect circuit breaker temperature parameters. The wireless temperature sensor 132 is used for collecting bus temperature parameters. Specifically, the wired temperature sensor 131 may be a wired temperature sensor of model ETSY-D1 in the prior art; the wireless temperature sensor 132 may be a wireless temperature sensor of STP-510 type in the prior art. The wireless temperature measurement has the advantages of less wiring and no limitation of a temperature measurement point by a circuit, but the wireless temperature measurement has the defects of low accuracy due to the need of periodically replacing a power supply and weak anti-interference capability; the wired temperature measurement has the advantages of strong anti-interference capability and higher accuracy, and the power supply does not need to be replaced frequently, but the wired temperature measurement has the defects of complicated wiring and limited temperature measurement points by circuits. It can be seen that wired and wireless temperature measurement have advantages and disadvantages. As described above, the temperature parameter of the circuit breaker can be represented by the temperature of the circuit breaker pile head 61, the heat dissipation space at the circuit breaker pile head 61 is small, and the temperature is easy to rise, so the temperature control requirement of the circuit breaker 6 is more strict than the temperature control requirement of the bus 5. Therefore, compared with the temperature control of the bus 5, the temperature control of the circuit breaker 6 needs a higher accuracy, and correspondingly, the wired temperature sensor 131 is adopted to collect the temperature parameters of the circuit breaker, so as to improve the accuracy of the temperature monitoring of the circuit breaker 6; the wireless temperature sensor 132 is adopted to collect bus temperature parameters so as to reduce the overall wiring workload, so that the advantages of wired temperature measurement and wireless temperature measurement can be reasonably exerted by adopting different temperature measurement modes aiming at different components, the wiring workload is saved, and meanwhile, the accurate grasp of the temperature states of key components is ensured.

In this embodiment, the data acquisition unit 2 includes a smart meter 20, a temperature and humidity controller 21, and a wireless temperature measuring device (not shown). The intelligent instrument 20, the temperature and humidity controller 21 and the wireless temperature measuring device are all arranged in the cabinet body 4.

As shown in fig. 3, the intelligent instrument 20 is respectively in communication connection with the current transformer 12, the wired temperature sensor 131 and the monitoring unit 3, and transmits the bus electrical parameters collected by the current transformer 12 and the breaker temperature parameters collected by the wired temperature sensor 131 to the monitoring unit 3. The smart meter 20 may be a TKM3000 type smart meter of the prior art.

As shown in fig. 3, the temperature and humidity controller 21 is respectively in communication connection with the ambient temperature sensor 10, the ambient humidity sensor 11 and the monitoring unit 3, and transmits the internal ambient temperature parameter of the cabinet and the internal ambient humidity parameter acquired by the ambient temperature sensor 10 and the ambient humidity sensor 11 to the monitoring unit 3. Or in the case that the environmental temperature sensor 10 and the environmental humidity sensor 11 are integrated devices (temperature and humidity sensors), the temperature and humidity controller 21 is respectively in communication connection with the temperature and humidity sensors and the monitoring unit 3, and transmits the cabinet internal environmental temperature parameter and the cabinet internal environmental humidity parameter acquired by the temperature and humidity sensors to the monitoring unit 3. The temperature and humidity controller 21 may be a temperature and humidity controller of the type W2S2D-Z3AS in the prior art.

As shown in fig. 3, the wireless temperature measuring device is respectively connected with the wireless temperature measuring sensor 132 and the monitoring unit 3 in a communication manner, and the bus temperature parameters acquired by the wireless temperature measuring device are transmitted to the monitoring unit 3. The wireless temperature measuring device can be a STP-510 wireless temperature measuring device in the prior art.

As shown in fig. 3, the smart meter 20 is also connected to the circuit breaker 6 to obtain the circuit breaker operating status parameters. Specifically, the intelligent instrument 20 is connected with an auxiliary switch of the circuit breaker 6, so that the operation state parameters of the circuit breaker can be obtained, including an opening and closing state parameter, a short circuit state parameter, a grounding protection state parameter and a working position state parameter. The smart meter 20 may be a TKM3000 type smart meter of the prior art.

Further, as shown in fig. 3, the data acquisition unit 2 may further include a power quality analysis device 22, where the power quality analysis device 22 is disposed in the cabinet 4, and the power quality analysis device 22 is communicatively connected to the current transformer 12 to receive the current information acquired from the current transformer 12. The power quality analysis device 22 is also connected to the bus 5 to directly obtain voltage information of the bus 5. The power quality analysis device 22 may be a power quality analysis device of the type EM600 plus in the prior art. Although the smart meter 20 may also receive bus electrical parameters, the smart meter 20 does not have a wave recording function. The power quality analysis device 22 can be used for collecting the power parameters of the whole low-voltage system, and is more comprehensive in harmonic function and has a wave recording function. When the smart meter 20 and the power quality analysis device 22 are provided at the same time, the smart meter 20 may be used to monitor the power consumption while the power quality analysis device 22 may be used to monitor the power quality. In this way, the monitoring of the electrical parameters of the bus bar is more comprehensive and specific. Of course, according to the actual requirements, only the intelligent instrument 20 may be provided, and the power quality analysis device 22 may not be provided.

As shown in fig. 2, the cabinet 4 includes a bus bar compartment 40, a control cell 41, a breaker compartment 42, a cable compartment 43, and a front lower compartment 44, which are partitioned from each other. The circuit breaker 6 is located within the circuit breaker chamber 42 and the circuit breaker stake 61 is partially extended from the circuit breaker chamber 42 to the cable chamber 43. One end of the busbar 5 is located in the busbar chamber 40 and the other end passes out to the cable chamber 43 and is connected to the breaker stub 61. The current transformer 12 is arranged in the cable chamber 43, the current transformer 12 can be fixed on the inner wall surface of the cabinet body 4, and the coil of the current transformer surrounds the periphery of the bus 5 along the circumferential direction of the bus 5, but is not in contact with the bus 5, and bus electrical parameters such as current, voltage and the like at the corresponding position of the bus 5 can be measured through an electromagnetic induction principle. The wireless temperature sensor 132 may also be fixed on the inner wall surface of the cabinet body 4, where the temperature probe of the wireless temperature sensor 132 is close to the bus 5 to obtain the bus temperature parameter, as shown in fig. 2, at least one wireless temperature sensor 132 may be respectively disposed in the bus chamber 40 and the cable chamber 43 to respectively measure the bus temperature parameter in the bus chamber 40 and the bus temperature parameter in the cable chamber 43. A wired temperature sensor 131 is located within the cable compartment 43 and is connected to the breaker post 61 to collect the temperature of the breaker post 61. The data acquisition unit 2 (including the smart meter 20, the temperature and humidity controller 21, the wireless temperature measuring device, etc.), and the monitoring unit 3 are disposed in the control chamber 41. Because the cable chamber 43 is located at the bottom of the cabinet 4 and is relatively close to the cable trench, the ambient temperature sensor 10 and the ambient humidity sensor 11 are disposed in the cable chamber 43, and the ambient temperature and humidity in the cable chamber 43 are monitored in real time.

Further, as shown in fig. 1, a frame breaker display unit 8 is provided above the breaker 6 in the breaker chamber 42, and the frame breaker display unit 8 is connected to the breaker 6, so that operation information, maintenance information, fault records, cables, opening and closing states, communication addresses, contact wear conditions, and the like of the breaker 6 can be displayed.

In this embodiment, as shown in fig. 1 and 3, the monitoring unit 3 includes an industrial personal computer 7 and a remote monitoring computer. The industrial personal computer 7 and the remote monitoring computer can refer to the configurations of the industrial personal computer and the computer in the prior art, and are not described herein. The industrial personal computer 7 can be arranged in the cabinet body 4 or can be arranged outside the cabinet body 4. The remote monitoring computer is located outside the cabinet 4. The data acquisition unit 2 is respectively connected with the industrial personal computer 7 and the remote monitoring computer in a communication way. The industrial personal computer 7 can be placed in the cabinet body 4 or arranged close to the cabinet body 4 to serve as a nearby monitoring unit; and the remote monitoring computer is located outside the cabinet body 4 and serves as a remote monitoring unit. Therefore, the nearby monitoring and the remote monitoring can be realized at the same time, and the operation state of the switch cabinet can be observed more conveniently. Of course, in other embodiments, only the industrial personal computer 7 or only the remote monitoring computer may be provided.

As shown in fig. 1 and 3, in this embodiment, the intelligent low-voltage switch cabinet further includes a communication manager (not shown) disposed in the cabinet body 4, where the communication manager is respectively in communication connection with the data acquisition unit 2 and the monitoring unit 3, and is configured to collect data acquired by the data acquisition unit 2 in a centralized manner, and screen the data acquired by the data acquisition unit 2 and then transmit the screened data to the monitoring unit 3. Specifically, at one end of the data acquisition unit 2, the communication management machine is respectively connected with the intelligent instrument 20, the temperature and humidity controller 21, the wireless temperature measuring device and the electric energy quality analysis device 22; at the end of the monitoring unit 3, the communication manager is respectively connected with the industrial personal computer 7 and the remote monitoring computer. And, can adopt shielding twisted pair to connect between communication manager and intelligent instrument 20, temperature and humidity controller 21, the wireless temperature measuring device to realize the stable transmission of signal. That is, the data collecting unit 2 (including the intelligent instrument 20, the temperature and humidity controller 21, the wireless temperature measuring device, etc.) collects the data collected from the sensor unit 1 to the communication manager, and the communication manager sorts and screens the data and then uploads the data to the monitoring unit 3, so that the data processing pressure of the monitoring unit 3 can be reduced and the working efficiency can be improved. And the bus connection mode is used for replacing the hard wiring mode, so that wiring and secondary wiring in the cabinet can be reduced, the number of terminals is reduced, and the cost is saved. In addition, in view of the fact that each sensor of the sensor unit 1 collects a large amount of data in real time, the communication manager is arranged to selectively collect the data collected by the sensor unit 1 according to actual demands. For example, a person may choose to gather breaker temperature parameters over a particular period of time on the software of a remote monitoring computer. The communication manager can be ZGX-800 in the prior art.

As shown in fig. 3, in this embodiment, the intelligent low-voltage switchgear further includes a camera (not shown) disposed within the bus bar compartment 40 and/or the cable compartment 43. That is, the camera may be provided only in the bus bar chamber 40, only in the cable chamber 43, or both the bus bar chamber 40 and the cable chamber 43. The camera is used for monitoring the state of the copper bars in the bus bar chamber 40 and/or the cable chamber 43, and the visualization of the interior of the bus bar chamber 40 and/or the cable chamber 43 is realized. The camera can refer to a camera and equipment configuration with an imaging function in the prior art.

As shown in fig. 3, the intelligent low-voltage switch cabinet may further include a network switch disposed in the cabinet body 4, where the network switch is connected with the communication manager, the camera and the remote monitoring computer through network cables, so that communication connection between the communication manager and the remote monitoring computer can be achieved, and communication connection between the camera and the remote monitoring computer can be achieved. The network switch may be a network switch of the type S5731 in the prior art. Both the communications manager and the network switch may be located within the front lower compartment 44.

It is to be understood that the above examples only represent preferred embodiments of the present utility model, which are described in more detail and are not to be construed as limiting the scope of the utility model; it should be noted that, for a person skilled in the art, the above technical features can be freely combined, and several variations and modifications can be made without departing from the scope of the utility model; therefore, all changes and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims (10)

1. The intelligent low-voltage switch cabinet is characterized by comprising a cabinet body (4), a bus (5) arranged in the cabinet body (4), a circuit breaker (6) arranged in the cabinet body (4) and connected with the bus (5), a data acquisition unit (2), a monitoring unit (3) and a sensor unit (1) for acquiring operation state parameters of the intelligent low-voltage switch cabinet;

the intelligent low-voltage switch cabinet operation state parameters comprise cabinet internal environment temperature parameters, cabinet internal environment humidity parameters, bus temperature parameters, bus electrical parameters and breaker temperature parameters;

The data acquisition unit (2) is respectively in communication connection with the sensor unit (1) and the monitoring unit (3), receives the intelligent low-voltage switch cabinet operation state parameters from the sensor unit (1) and then transmits the intelligent low-voltage switch cabinet operation state parameters to the monitoring unit (3); the data acquisition unit (2) is further connected with the circuit breaker (6), and the circuit breaker operation state parameters are transmitted to the monitoring unit (3) after being obtained, wherein the circuit breaker operation state parameters comprise an opening and closing state parameter, a short circuit state parameter, a grounding protection state parameter and a working position state parameter.

2. Intelligent low-voltage switchgear according to claim 1, characterized in that the sensor unit (1) comprises an ambient temperature sensor (10), an ambient humidity sensor (11), a temperature sensor, a current transformer (12) which are in communication connection with the data acquisition unit (2), respectively;

The environment temperature sensor (10) collects the internal environment temperature parameter of the cabinet, the environment humidity sensor (11) collects the internal environment humidity parameter of the cabinet, the temperature measuring sensor collects the bus temperature parameter and the circuit breaker temperature parameter, and the current transformer (12) collects the bus electrical parameter.

3. The intelligent low-voltage switchgear according to claim 2, characterized in that the temperature sensor comprises a wired temperature sensor (131) for acquiring the circuit breaker temperature parameter and a wireless temperature sensor (132) for acquiring the bus temperature parameter.

4. The intelligent low-voltage switch cabinet according to claim 3, wherein the data acquisition unit (2) comprises an intelligent instrument (20), a temperature and humidity controller (21) and a wireless temperature measuring device;

The intelligent instrument (20) is respectively in communication connection with the current transformer (12), the wired temperature measurement sensor (131) and the monitoring unit (3);

the temperature and humidity controller (21) is respectively in communication connection with the ambient temperature sensor (10), the ambient humidity sensor (11) and the monitoring unit (3);

The wireless temperature measuring device is respectively in communication connection with the wireless temperature measuring sensor (132) and the monitoring unit (3);

The smart meter (20) is also connected to the circuit breaker (6) to obtain the circuit breaker operating status parameters.

5. The intelligent low-voltage switchgear according to claim 4, characterized in that the data acquisition unit (2) further comprises a power quality analysis device (22), the power quality analysis device (22) being in communication connection with the current transformer (12); the power quality analysis device (22) is also connected with the bus (5).

6. Intelligent low-voltage switchgear according to claim 2, characterized in that the interior of the said cabinet (4) comprises a busbar compartment (40), a control cell (41), a circuit breaker compartment (42), a cable compartment (43) and a front lower compartment (44) separated from each other.

7. The intelligent low-voltage switchgear according to claim 6, characterized in that it further comprises a camera arranged in the busbar compartment (40) and/or cable compartment (43).

8. Intelligent low-voltage switchgear according to claim 2, characterized in that the circuit breaker (6) comprises a circuit breaker body (60) and a circuit breaker head (61) connected, the temperature sensor collecting the temperature of the circuit breaker head (61) as the circuit breaker temperature parameter.

9. Intelligent low-voltage switchgear according to claim 1, characterized in that the monitoring unit (3) comprises an industrial personal computer (7); the industrial personal computer (7) is arranged in the cabinet body (4) or outside the cabinet body (4); the data acquisition unit (2) is in communication connection with the industrial personal computer (7);

And/or the monitoring unit (3) comprises a remote monitoring computer, and the remote monitoring computer is positioned outside the cabinet body (4); the data acquisition unit (2) is in communication connection with the remote monitoring computer.

10. The intelligent low-voltage switch cabinet according to claim 1, further comprising a communication manager, wherein the communication manager is respectively in communication connection with the data acquisition unit (2) and the monitoring unit (3), and is used for collecting data acquired by the data acquisition unit (2) in a concentrated manner, screening the data acquired by the data acquisition unit (2) and then transmitting the screened data to the monitoring unit (3).