CN218997768U - Power distribution control monitoring device - Google Patents
Power distribution control monitoring device Download PDFInfo
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- CN218997768U CN218997768U CN202320009133.XU CN202320009133U CN218997768U CN 218997768 U CN218997768 U CN 218997768U CN 202320009133 U CN202320009133 U CN 202320009133U CN 218997768 U CN218997768 U CN 218997768U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
Abstract
The utility model belongs to the technical field of power distribution control, and particularly discloses a power distribution control monitoring device which comprises one or more input protection modules, an input switching module, a primary output module and a secondary output module; the first input end of the input protection module is connected with the mains supply input end, the second input end of the input protection module is connected with the input end of the generator, and the input protection module protects surge voltage and current and performs overvoltage protection; the input end of the input switching module is connected with the output end of the input protection module and is used for switching the input of the mains supply or the input of the generator; the output end of the input switching module is respectively connected with the input ends of the primary output module and the secondary output module, the primary output module is connected with the power supply end of the equipment without real-time power supply, and the secondary output module is connected with the power supply end of the equipment without real-time power supply. By adopting the technical scheme, the overvoltage, overcurrent and surge protection is realized by utilizing the cooperation of the modules, and the mains supply input and the generator input are switched at will, so that the control is facilitated.
Description
Technical Field
The utility model belongs to the technical field of power distribution control, and relates to a power distribution control monitoring device.
Background
The power distribution control monitoring system is a comprehensive control and real-time monitoring system integrating computer technology, data transmission, control technology, monitoring technology and remote transmission. The intelligent unified management of the front-end monitoring equipment is completed by the management server. The distribution control monitoring system plays a role in configuring a power supply and remotely monitoring the condition of the power supply, and simultaneously configures various protection devices, such as a short-circuit prevention device, an overload prevention air switch and the like, so that the protection effect is achieved on a circuit and electric equipment, and when the circuit is abnormal, the control of the fault range is facilitated, the economic loss is reduced, and the fault point can be conveniently and rapidly found, added and removed.
In the prior art, the multifunctional vehicle still uses a mechanical manual power distribution mode, and has the problems of decentralized control, non-visualization, incapability of powering off and cruising, no real-time monitoring function and the like, so that the actual power distribution requirement cannot be met. Therefore, in view of the above problems, it is necessary to propose further solutions.
Disclosure of Invention
The utility model aims to provide a power distribution control monitoring device which realizes overvoltage, overcurrent and surge protection, and can be used for arbitrarily switching the input of mains supply and the input of a generator, thereby being beneficial to control.
In order to achieve the above purpose, the basic scheme of the utility model is as follows: a power distribution control monitoring device comprises one or more input protection modules and an input switching module;
the first input end of the input protection module is connected with the mains supply input end, the second input end of the input protection module is connected with the generator input end, and the input protection module is used for reducing the influence of surge voltage and current and performing overvoltage protection;
the input end of the input switching module is connected with the output end of the input protection module and is used for switching the input of the commercial power or the input of the generator, and the output end of the input switching module is connected with the power supply end of the power supply equipment.
The working principle and the beneficial effects of the basic scheme are as follows: the power distribution control monitoring device is a power supply and distribution center of the vehicle-mounted electrical system, and can realize mutual switching by utilizing power supply input of alternating-current commercial power and a vehicle-mounted generator and an input switching module. Under the condition of mains supply, the alternating current mains supply provides the power supply of the whole vehicle system; under the condition of no commercial power, the vehicle-mounted generator provides alternating current power supply, and is beneficial to use. The input protection module can protect overvoltage, overcurrent, undervoltage and surge of an input power supply, and improves use safety.
Further, the input switching module is connected with the input ends of the primary output module and the uninterrupted power supply UPS respectively, the primary output module is connected with a power supply end without real-time power supply equipment, the output end of the uninterrupted power supply UPS is connected with the input end of the secondary output module, and the secondary output module is connected with the power supply end with real-time power supply equipment.
The UPS power supply ensures that important equipment of the system is supplied with uninterrupted alternating current power, and equipment damage caused by sudden power failure is prevented.
Further, the input protection module comprises a surge protector, a first three-phase relay and a second three-phase relay, wherein the first three-phase relay and the second three-phase relay have an overvoltage and undervoltage detection function;
the utility power input is connected with a surge protector and a first three-phase relay in sequence, the generator input is connected with a second three-phase relay, and the control signal output end of the first three-phase relay or the second three-phase relay is connected with the rear-stage circuit cut-off control end of the input switching module.
Due to instability of mains supply input, a surge protector is arranged at the input end to protect terminal equipment from surge voltage and current, meanwhile, three-phase relays are respectively arranged at two paths of input and used for monitoring input voltage, when the input voltage is too high or too low, the three-phase relays control corresponding alternating current contactors to cut off a rear-stage circuit, and the requirement that the power consumption of the terminal does not exceed rated input is met.
Further, the input switching module comprises a plurality of alternating current contactors and a rotary switch, wherein the alternating current contactors are respectively arranged on a mains supply input line and a generator input line, and the rotary switch is respectively connected with a switch contact of the alternating current contactor on the mains supply input and a switch contact of the alternating current contactor on the generator input.
And the rotary change-over switch is utilized for switching control, so that the structure is simple and the operation is facilitated.
Further, the intelligent power supply system further comprises a power detection module, wherein the power detection module is arranged at the rear end of the input switching module and comprises an intelligent ammeter and a current transformer and is used for collecting voltage and current information in real time.
And the power detection module is utilized to realize real-time monitoring of line voltage and current, so that the line voltage and current are convenient to check.
Further, the uninterruptible power supply UPS comprises a UPS input interface and a UPS output interface, wherein the UPS input interface is connected with the output end of the input switching module, and the UPS output interface is connected with the input end of the secondary output module.
The interface has simple structure and convenient use.
Further, the first-stage output module and the second-stage output module are connected with the corresponding power supply equipment in series with an overcurrent protection switch.
And an overcurrent protection switch is arranged, so that the safety of a circuit is protected.
Further, the intelligent control system further comprises an indicator lamp, wherein the indicator lamp is arranged at the front end of the input protection module, at the rear end of the input switching module, on the primary output module and on the secondary output module.
And the indicator lamp is arranged, so that whether the induction circuit is electrified smoothly or not is facilitated, and the subsequent maintenance is facilitated.
Further, the overcurrent and overvoltage control circuit of the first three-phase relay and the second three-phase relay comprises an undervoltage detection module VN1, a voltage relay KV1, a switch contact K1 and a control indicator lamp, wherein the undervoltage detection module VN1 is used for collecting an overvoltage or undervoltage signal, a control signal output end of the undervoltage detection module VN1 is connected with a switch contact control end of the voltage relay KV1, the control indicator lamp is connected in series with a normally open contact of the voltage relay KV1, and a normally closed contact of the voltage relay KV1 is connected with the switch contact K1 of the input switching module.
Thus, the input voltage of the power utilization load is ensured to be within a specified range, and the normal operation of the load is ensured.
Drawings
FIG. 1 is a schematic flow chart of a power distribution control monitoring device of the present utility model;
FIG. 2 is an input circuit diagram of the power distribution control monitoring device of the present utility model;
FIG. 3 is a circuit diagram of the output of the uninterruptible power supply UPS of the power distribution control and monitoring device of the present utility model;
FIG. 4 is a schematic diagram of an over-current voltage control circuit of the power distribution control and monitoring device of the present utility model;
fig. 5 is a schematic structural diagram of an input switching module of the power distribution control monitoring device of the present utility model.
Reference numerals in the drawings of the specification include: the input protection module 10, the surge protector 11, the first three-phase relay 121, the second three-phase relay 122, the input switching module 20, the ac contactor 21, the power detection module 30, the smart meter 31, the current transformer 32, the primary output module 40, the air conditioner output 41, the uninterruptible power supply UPS50, the UPS input interface 51, the UPS output interface 52, the secondary output module 60, the UPS output switch 61, each output switch 62, the output connector 63, and the output indicator 64.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
In the description of the present utility model, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.
In the description of the present utility model, unless otherwise specified and defined, it should be noted that the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, mechanical or electrical, or may be in communication with each other between two elements, directly or indirectly through intermediaries, as would be understood by those skilled in the art, in view of the specific meaning of the terms described above.
The utility model discloses a power distribution control monitoring device, which is a power supply and distribution center of a vehicle-mounted electrical system, as shown in fig. 1 and 2, and is provided with three power supply input modes of alternating current commercial power, a vehicle-mounted generator and a UPS (Uninterruptible Power Supply) power supply, and can realize mutual switching. Under the condition of mains supply, the alternating current mains supply provides the power supply of the whole vehicle system; in the absence of utility power, an ac power supply is provided by the on-board generator; the UPS power supply ensures that important equipment of the system is supplied with uninterrupted alternating current power, and equipment damage caused by sudden power failure is prevented. Meanwhile, the device has the alarming function of overvoltage, undervoltage and the like of an input power supply and the leakage current and the overload automatic protection function.
The power distribution control monitoring device includes one or more input protection modules 10, and an input switching module 20. The first input end of the input protection module 10 is electrically connected with the mains supply input end, the second input end of the input protection module 10 is electrically connected with the generator input end, and the input protection module 10 is used for reducing the influence of surge voltage and current and performing overvoltage protection. The input end of the input switching module 20 is electrically connected with the output end of the input protection module 10, and is used for switching the mains supply input or the generator input, and the output end of the input switching module 20 is electrically connected with the power supply end of the power supply equipment.
In a preferred embodiment of the present utility model, as shown in fig. 3, the power distribution control monitoring device further includes a primary output module 40, a secondary output module 60, and an UPS50, and the input switching module 20 is connected to the input terminals of the primary output module 40 and the UPS50, respectively. The primary output module 40 is electrically connected to a power supply terminal of a real-time power supply device, the output terminal of the UPS50 is electrically connected to an input terminal of the secondary output module 60, and the secondary output module 60 is electrically connected to the power supply terminal of the real-time power supply device.
Preferably, the UPS50 includes a UPS input interface 51 and a UPS output interface 52, the UPS input interface 51 is electrically connected to an output end of the input switching module 20, and the UPS output interface 52 is electrically connected to an input end of the secondary output module 60. The primary output module 40 may be connected to a high-power load, such as an air conditioning output 41 or other devices, and may be configured to be extended according to different load requirements. The UPS input interface 51 is used to charge the UPS when the mains or the generator is in operation; when the commercial power or the power generation is disconnected, the UPS equipment supplies power to the load of the secondary output module 60 through the UPS output interface 52, so that the continuous operation of the equipment is ensured. The secondary output module 60 includes UPS output switches 61, each output switch 62, an output connector 63, and an output indicator lamp 64. In the use process of the device, if the output is stable, the UPS50 can be connected without accessing the UPS, and the UPS power supply and the UPS input can be directly connected for use, so that the real-time output of the secondary load is ensured.
In a preferred embodiment of the present utility model, the input protection module 10 includes a surge protector 11, a first three-phase relay 121 and a second three-phase relay 122 having an overvoltage/undervoltage detection function. The utility power input is electrically connected with the surge protector 11 and the first three-phase relay 121 in sequence, the generator input is connected with the second three-phase relay 122, and the control signal output end of the first three-phase relay 121 or the second three-phase relay 122 is electrically connected with the rear-stage circuit cut-off control end of the input switching module 20. The surge protector 11 is preferably but not limited to Zhengtainu 6-II 40KA, and the three-phase relay can adopt Zhengtai NJYB3-11 and the like.
Due to the instability of the mains supply input, a surge protector 11 is arranged at the input end to protect the terminal equipment from surge voltage and current. Meanwhile, the two paths of input are respectively provided with a three-phase relay for monitoring the input voltage, and when the input voltage is too high or too low, the three-phase relay controls the corresponding alternating current contactor 21 to cut off the subsequent-stage circuit, so that the requirement that the power consumption of the terminal does not exceed the rated input is met. The overvoltage and undervoltage protection in the device can be realized by adopting a three-phase relay, and can also be realized by adopting other devices to build a control circuit.
In a preferred embodiment of the present utility model, as shown in fig. 5, the input switching module 20 includes a plurality of ac contactors 21 (e.g., schrader LC1D38M7C, etc.), and a rotary switch (the switch KN1 in fig. 5), wherein the ac contactors 21 are respectively mounted on the mains input line and the generator input line, and the rotary switch is electrically connected to the switch contacts of the ac contactors 21 on the mains input and the switch contacts of the ac contactors 21 on the generator input, respectively. The ac contactor 21 is controlled not only by the three-phase relay but also by the rotary switch, thereby ensuring that only one input (mains input or generator input) supplies power to the load at the subsequent stage.
The switching between the mains supply and the power generation is realized by adopting a rotary change-over switch KN1, the input end of the switch is respectively connected with the mains supply and the power generator for supplying power, and one path of input contact and one path of output contact are reserved for equipment closing. When the rotary switch is switched to generate power, the L2-1 and the L2-2 are conducted, the power generation and power supply supplies power to the control port of the alternating current contactor 21 through the switch, so that the alternating current contactor 21 is closed, and at the moment, the control port of the alternating current contactor 21 is in a non-power supply state, so that the equipment is powered by the generator; the same applies when mains supply is used for supplying power. The input switching in the device can be realized by a plurality of alternating current contactors 21, or can be realized by a solid state relay or other switching circuits.
In a preferred embodiment of the present utility model, the power distribution control and monitoring device further includes a power detection module 30, where the power detection module 30 is installed at the rear end of the input switching module 20, that is, at the rear end of the ac contactor 21. The power detection module 30 includes a smart meter 31 (e.g., an Kerui AMC72-E4/KC, etc.) and a current transformer 32 (e.g., zhengtai BH0.66, etc.) with a zoom ratio for collecting voltage and current information in real time. The intelligent ammeter 31 can directly detect line voltage, and the current transformer 32 with the zoom ratio can realize real-time monitoring of line current; real-time voltage, real-time current, power, phase and the like can be measured.
In a preferred embodiment of the present utility model, the primary output module 40 and the secondary output module 60 are connected in series with an overcurrent protection switch on a circuit electrically connected with a corresponding power supply device. And each output load is configured with an overcurrent protection switch (Kn) according to the maximum working power of the load, so that independent work of each load is realized, and when one load or multiple loads fail to cause short circuit or overcurrent, the overcurrent protection switch cuts off the output of the load, thereby protecting the normal work of other loads. The overcurrent protection switch can select Schneider air switch IC65N C A with overcurrent protection.
In a preferred embodiment of the present utility model, the power distribution control and monitoring device further includes an indicator light disposed at the front end of the input protection module 10, at the rear end of the input switching module 20, at the primary output module 40, and at the secondary output module 60. And the indicator lamps are configured for each input or output state, and when the input or output state is effective, the corresponding indicator lamps lighten, so that the states of each input and output and overvoltage and undervoltage can be visually observed.
In a preferred embodiment of the present utility model, the overcurrent and overcurrent voltage control circuit of the first three-phase relay 121 and the second three-phase relay 122 includes an undervoltage detection module VN1, a voltage relay KV1, a switch contact K1, and a control indicator. The undervoltage detection module VN1 is used for collecting signals with overhigh voltage or overlow voltage, and a control signal output end of the undervoltage detection module VN1 is electrically connected with a switch contact control end of the voltage relay KV 1. The control indicator lamp is connected in series with a normally open contact of the voltage relay KV1, and a normally closed contact of the voltage relay KV1 is electrically connected with a switch contact K1 of the input switching module 20 (i.e., the corresponding ac contactor 21).
As shown in fig. 4, the overvoltage/overcurrent detection control circuit comprises an overvoltage/undervoltage detection module VN1, and when the input voltage is too high or too low, the overvoltage/undervoltage detection module VN1 controls the voltage relay KV1 to work, and KV1 contacts are cut from 05 to 04, so that the corresponding indicator lamp becomes bright. Meanwhile, as the KV1 contact is switched from 05 to 04, the corresponding switch contact K1 (namely KM1 in the figure) is driven to cut off output, so that the input voltage of an electric load is ensured to be in a specified range, and the normal operation of the load is ensured.
The utility model has the protection functions of overvoltage, overcurrent, surge and the like, voltage and current real-time detection and overvoltage and overcurrent protection; an input switching function; a power-off endurance function; the device is simple to control and convenient for expanding a system.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.
Claims (9)
1. A power distribution control monitoring device, characterized by comprising one or more input protection modules (10), and an input switching module (20);
the first input end of the input protection module (10) is connected with the mains supply input end, the second input end of the input protection module (10) is connected with the generator input end, and the input protection module (10) is used for reducing the influence of surge voltage and current and performing overvoltage protection;
the input end of the input switching module (20) is connected with the output end of the input protection module (10) and is used for switching the input of the mains supply or the input of the generator, and the output end of the input switching module (20) is connected with the power supply end of the power supply equipment.
2. The power distribution control monitoring device according to claim 1, further comprising a primary output module (40), a secondary output module (60) and an uninterruptible power supply UPS (50), wherein the input switching module (20) is connected to the primary output module (40) and the input of the uninterruptible power supply UPS (50), respectively, the primary output module (40) is connected to a power supply terminal that does not require a real-time power supply device, the output terminal of the uninterruptible power supply UPS (50) is connected to the input of the secondary output module (60), and the secondary output module (60) is connected to a power supply terminal that requires a real-time power supply device.
3. The power distribution control monitoring device according to claim 1, wherein the input protection module (10) includes a surge protector (11), a first three-phase relay (121) and a second three-phase relay (122) having an overvoltage/undervoltage detection function;
the utility power input is connected with a surge protector (11) and a first three-phase relay (121) in sequence, the generator input is connected with a second three-phase relay (122), and the control signal output end of the first three-phase relay (121) or the second three-phase relay (122) is connected with the rear-stage circuit cut-off control end of the input switching module (20).
4. The power distribution control monitoring device of claim 1, wherein the input switching module (20) comprises a plurality of ac contactors (21), and a rotary switch, the ac contactors (21) being mounted on the mains input line and the generator input line, respectively, the rotary switch being connected to the switching contacts of the ac contactors on the mains input and the switching contacts of the ac contactors on the generator input, respectively.
5. The power distribution control monitoring device according to claim 1, further comprising a power detection module (30), wherein the power detection module (30) is installed at the rear end of the input switching module (20), and the power detection module (30) comprises a smart meter (31) and a current transformer (32) for collecting voltage and current information in real time.
6. The power distribution control monitoring device according to claim 2, wherein the uninterruptible power supply UPS (50) includes a UPS input interface (51) and a UPS output interface (52), the UPS input interface (51) is connected to an output of the input switching module (20), and the UPS output interface (52) is connected to an input of the secondary output module (60).
7. The power distribution control monitoring device according to claim 2, wherein the primary output module (40) and the secondary output module (60) are connected with the corresponding power supply equipment in series with an overcurrent protection switch.
8. The power distribution control monitoring device of claim 1, further comprising an indicator light disposed on a front end of the input protection module (10), a rear end of the input switching module (20), on the primary output module (40), and on the secondary output module (60).
9. The power distribution control monitoring device according to claim 3, wherein the overcurrent voltage control circuit of the first three-phase relay (121) and the second three-phase relay (122) comprises an undervoltage detection module VN1, a voltage relay KV1, a switch contact K1 and a control indicator lamp, the undervoltage detection module VN1 is used for collecting an overvoltage or undervoltage signal, a control signal output end of the undervoltage detection module VN1 is connected with a switch contact control end of the voltage relay KV1, the control indicator lamp is connected in series with a normally open contact of the voltage relay KV1, and a normally closed contact of the voltage relay KV1 is connected with the switch contact K1 of the input switching module (20).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202320009133.XU CN218997768U (en) | 2023-01-04 | 2023-01-04 | Power distribution control monitoring device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202320009133.XU CN218997768U (en) | 2023-01-04 | 2023-01-04 | Power distribution control monitoring device |
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| CN218997768U true CN218997768U (en) | 2023-05-09 |
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