Electric energy quality monitoring device

Abstract

The utility model provides an electric energy quality monitoring device, and belongs to the technical field of electric energy quality. The electric energy quality monitoring device comprises an electric energy quality online monitor and a shell. The electric energy quality on-line monitor is provided with a wire inlet interface. The shell comprises a rear cover and a box body which are detachably matched, when the rear cover is matched with the box body, a containing cavity is formed, the electric energy quality online monitor is located in the containing cavity, the box body is further provided with a wire outlet interface, and the wire outlet interface is electrically connected with the wire inlet interface through a cable. The outgoing line interface comprises a power supply interface, a three-phase voltage interface and a three-phase current interface, the power supply interface is connected with a power supply through a power supply cable, the three-phase voltage interface is connected with a standby three-phase circuit breaker in the distribution box through a circuit breaker cable, and the three-phase current interface is connected with the open type current transformer through a transformer cable. Therefore, the wiring mode of the electric energy quality online monitor can be simulated, the portability of the electric energy quality monitoring device is improved, and long-time monitoring of the electric energy quality monitoring device on a working site is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical power quality, and particularly relates to a power quality monitoring device. Background Art

[0002] At present, power quality monitors usually adopt an integrated design. Since the online monitoring time of power quality is relatively long, the integrated power quality monitor needs to be held and operated by staff for a long time, resulting in inconvenient on-site management and easy damage to the power quality monitor at the production site. In addition, there are highly sensitive devices in industrial sites, such as computer electronic devices, programmable controllers, contactors and relays, numerical control processing devices, assembly line production devices, chip processing devices, etc. When using a power quality monitor to monitor the above devices, long-term online monitoring is required, so its own protection level requirements are relatively high. However, the integrated power quality monitor is not suitable for long-term on-site monitoring of devices due to its high price and portable design, and cannot achieve a high protection level, thus affecting the power quality monitoring of devices.

[0003] The above information disclosed in the background art section is only used to enhance the understanding of the background of the present disclosure, and thus it may include information that does not constitute the prior art known to those of ordinary skill in the art. Summary of the Invention

[0004] The utility model provides a power quality monitoring device, which can improve the protection level and portability of the power quality monitoring device.

[0005] In the first aspect of the present disclosure, a power quality monitoring device is provided, including:

[0006] A power quality online monitor, which is provided with an incoming line interface;

[0007] A housing, including a rear cover and a box body detachably engaged with the rear cover. When the rear cover and the box body are engaged, a receiving cavity is formed. The power quality online monitor is located in the receiving cavity. The box body is also provided with an outgoing line interface, and the outgoing line interface and the incoming line interface are electrically connected by a cable;

[0008] Wherein, the outgoing line interface includes a power supply interface, a three-phase voltage interface, and a three-phase current interface. The power supply interface is connected to a power supply through a power supply cable. The three-phase voltage interface is connected to a spare three-phase circuit breaker in a distribution box through a circuit breaker cable. The three-phase current interface is connected to an open-type current transformer through a current transformer cable.

[0009] In an exemplary embodiment of the present disclosure, the power quality online monitor is provided with an SD memory card slot.

[0010] In an exemplary embodiment of the present disclosure, an arc-shaped handle is provided on the top of the box body.

[0011] In an exemplary embodiment of the present disclosure, protective rubber sleeves are provided around both the incoming line interface and the outgoing line interface.

[0012] In an exemplary embodiment of the present disclosure, the outgoing line interface further includes a network interface, and the network interface is connected to a portable computer.

[0013] In an exemplary embodiment of the present disclosure, the housing adopts an IP55 protection level.

[0014] Beneficial effects:

[0015] In the present disclosure, by adding a housing outside the power quality on-line monitor, the power quality on-line monitor can be prevented from being interfered by the external environment, so as to improve the protection level of the power quality on-line monitor. And the housing includes a rear cover and a box body that are detachably fitted. When it is necessary to replace or repair the power quality on-line monitor, the rear cover can be disassembled to facilitate the staff to replace or repair. In addition, the outgoing line interface includes a power supply interface, three-phase voltage interfaces, and three-phase current interfaces. The power supply interface is connected to a power supply through a power supply cable, the three-phase voltage interfaces are connected to standby three-phase circuit breakers in a distribution box through breaker cables, and the three-phase current interfaces are connected to split-core current transformers through current transformer cables. In this way, the wiring method of the power quality on-line monitor can be simulated, the portability of the power quality monitoring device can be improved, and the long-term monitoring of the power quality monitoring device at the work site can be realized. Description of the drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is a schematic structural diagram of a power quality monitoring device according to an embodiment of the present disclosure.

[0018] Description of the reference numerals:

[0019] 1. Power quality on-line monitor; 2. SD memory card slot; 3. Incoming line interface; 4. Arc-shaped handle; 5. Outgoing line interface; 6. Rear cover; 7. Box body; 8. Cable. Detailed implementation manners

[0020] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of the embodiments of the present disclosure.

[0021] The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of the embodiments of the present disclosure. However, those skilled in the art will realize that the technical solutions of the present disclosure can be practiced without one or more of the specific details, or other methods, components, materials, etc. may be used. In other cases, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring the main technical concepts of the present disclosure.

[0022] When a certain structure is "on" another structure, it may mean that a certain structure is integrally formed on another structure, or that a certain structure is "directly" disposed on another structure, or that a certain structure is "indirectly" disposed on another structure through another structure.

[0023] The terms "a", "an", and "the" are used to indicate the presence of one or more elements / components / etc.; the terms "comprising" and "having" are used to mean an open inclusion and mean that there may be additional elements / components / etc. in addition to the listed elements / components / etc. The terms "first" and "second", etc. are used only as labels and are not a limitation on the quantity of their objects.

[0024] Currently, power quality monitors usually adopt an integrated design. Since the online monitoring time of power quality is relatively long, the integrated power quality monitor requires long-term handheld operation by staff, resulting in inconvenient on-site management and easy damage to the power quality monitor at the production site. In addition, there are highly sensitive devices in industrial sites, such as computer electronic devices, programmable controllers, contactors and relays, numerical control processing devices, assembly line production devices, chip processing devices, etc. When using a power quality monitor to monitor the above devices, long-term online monitoring is required, so a relatively high protection level is required for itself. However, the integrated power quality monitor is not suitable for long-term monitoring at the device site due to its high price and portable design, and cannot achieve a high protection level, thus affecting the power quality monitoring of the device.

[0025] In an embodiment of the present disclosure, a power quality monitoring device is provided, such as Figure 1As shown in the figure, the power quality monitoring device includes a power quality on-line monitor 1 and a housing. Among them, the power quality on-line monitor 1 may be provided with an incoming line interface 3. The housing may include a rear cover 6 and a box body 7 detachably engaged with the rear cover 6. When the rear cover 6 and the box body 7 are engaged, a receiving cavity is formed. The power quality on-line monitor 1 is located in the receiving cavity. The box body 7 is also provided with an outgoing line interface 5, and the outgoing line interface 5 and the incoming line interface 3 are electrically connected by a cable 8. The outgoing line interface 5 includes a power supply interface, a three-phase voltage interface, and a three-phase current interface. The power supply interface is connected to a power supply through a power supply cable, the three-phase voltage interface is connected to a spare three-phase circuit breaker in a distribution box through a circuit breaker cable, and the three-phase current interface is connected to an open type current transformer through a current transformer cable.

[0026] In the present disclosure, by adding a housing outside the power quality on-line monitor 1, the power quality on-line monitor 1 can be protected from external environmental interference, so as to improve the protection level of the power quality on-line monitor 1. And the housing includes a rear cover 6 and a box body 7 that are detachably engaged. When it is necessary to replace or repair the power quality on-line monitor 1, the rear cover 6 can be disassembled to facilitate the staff to replace or repair it. In addition, the outgoing line interface 5 includes a power supply interface, a three-phase voltage interface, and a three-phase current interface. The power supply interface is connected to a power supply through a cable 8, the three-phase voltage interface is connected to a spare three-phase circuit breaker in a distribution box through a cable 8, and the three-phase current interface is connected to an open type current transformer. In this way, the wiring method of the power quality on-line monitor 1 can be simulated, the portability of the power quality monitoring device can be improved, and the long-term monitoring of the power quality monitoring device at the work site can be realized.

[0027] The following will describe in detail each component of the power quality monitoring device provided by the embodiment of the present disclosure with reference to the accompanying drawings:

[0028] In an embodiment of the present disclosure, the power quality on-line monitor 1 is provided with an SD memory card slot 2 for inserting an SD memory card. The SD memory card can store the data recorded by the power quality on-line monitor 1, so as to insert the SD memory card into other computer devices for data analysis and processing.

[0029] Optionally, a circular arc handle 4 is provided on the top of the box body 7 to facilitate the staff to pick up the power quality monitoring device.

[0030] Optionally, protective rubber sleeves are provided around the incoming line interface 3 and the outgoing line interface 5 to prevent electric leakage at the positions of the incoming line interface 3 and the outgoing line interface 5.

[0031] Optionally, the outgoing line interface 5 further includes a network interface, and the network interface is connected to a portable computer. That is, the power quality of each device can be monitored in real time by accessing the client system through a computer. For example, it can directly measure most computer electronic devices, programmable controllers, contactors and relays, numerically controlled machining equipment, assembly line production equipment, and chip processing equipment without adjusting the existing lines.

[0032] For example, the power quality monitoring device can be connected to a portable computer through the network interface, and the built-in software at the B.S. end can be accessed on the portable computer, so as to perform real-time online monitoring and on-site observation of information such as the effective values of voltage and current, phase angle, three-phase unbalance, power, fluctuation flicker, electric energy, harmonic analysis, waveform recording analysis, and event alarm of sensitive devices.

[0033] Optionally, the housing adopts an IP55 protection level, which can greatly improve the protection level of the power quality monitoring device.

[0034] Optionally, all the cables 8 adopt copper wiring lugs, which can be directly connected to the wiring terminals of the circuit breaker of the distribution device on site, improving the convenience and safety of the power quality monitoring device.

[0035] Optionally, the primary current of the split-core current transformer is 30 - 400A, and the secondary current is 5A. For example, the primary current of the split-core current transformer can be 30A, 50A, 100A, 200A, 400A, and the present disclosure does not make special limitations here.

[0036] It should be understood that the present disclosure does not limit its application to the detailed structure and arrangement of the components proposed in this specification. The present disclosure can have other embodiments and can be implemented and executed in multiple ways. The foregoing variations and modifications fall within the scope of the present disclosure. It should be understood that the present disclosure disclosed and defined in this specification extends to all alternative combinations of two or more separate features mentioned or apparent in the text and / or drawings. All these different combinations constitute multiple alternative aspects of the present disclosure. The embodiments of this specification illustrate the best mode known for implementing the present disclosure and will enable those skilled in the art to utilize the present disclosure.

Claims

1. A power quality monitoring device, characterized in that, Including: An on-line power quality monitor, which is provided with an incoming line interface; A housing, including a rear cover and a box body detachably fitted with the rear cover. When the rear cover and the box body are fitted, a receiving cavity is formed. The on-line power quality monitor is located in the receiving cavity. The box body is also provided with an outgoing line interface, and the outgoing line interface and the incoming line interface are electrically connected through a cable; Among them, the outgoing line interface includes a power supply interface, a three-phase voltage interface, and a three-phase current interface. The power supply interface is connected to a power supply through a power supply cable. The three-phase voltage interface is connected to a spare three-phase circuit breaker in a distribution box through a circuit breaker cable. The three-phase current interface is connected to an open-type current transformer through a current transformer cable.

2. The power quality monitoring device according to claim 1, characterized in that The on-line power quality monitor is provided with an SD memory card slot.

3. The power quality monitoring device according to claim 1, characterized in that An arc-shaped handle is provided on the top of the box body.

4. The power quality monitoring device according to claim 1, characterized in that, Protective rubber sleeves are provided around the incoming line interface and the outgoing line interface.

5. The power quality monitoring device according to claim 1, characterized in that The outgoing line interface further includes a network interface, and the network interface is connected to a portable computer.

6. The power quality monitoring device according to claim 1, characterized in that The housing adopts an IP55 protection level.

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