CN209805494U - preceding stage automatic on-off protection device and system for uninterruptible power supply - Google Patents
preceding stage automatic on-off protection device and system for uninterruptible power supply Download PDFInfo
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- CN209805494U CN209805494U CN201920318713.0U CN201920318713U CN209805494U CN 209805494 U CN209805494 U CN 209805494U CN 201920318713 U CN201920318713 U CN 201920318713U CN 209805494 U CN209805494 U CN 209805494U
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Abstract
The utility model discloses an automatic break-make protection device of preceding stage, system for uninterrupted power source. The device comprises: the automatic on-off reset mechanism comprises a controller, an on-off automatic reset mechanism and an on-off switch; the input end of the controller can be connected with an external power supply, and the output end of the controller is connected with the on-off automatic resetting mechanism; the controller is configured to monitor the working state of the external power supply and send a switching-on or switching-off control instruction to the automatic switching-on/off resetting mechanism according to the change of the working state of the external power supply; the on-off automatic reset mechanism is configured to provide execution power for switching between on and off for the on-off switch according to the control instruction; one end of the on-off switch can be connected with the external power supply, and the other end of the on-off switch can be connected with the uninterruptible power supply and is configured to be switched on and off according to the control of the execution power. The utility model discloses can protect UPS self can not damaged when external power supply abnormal state.
Description
Technical Field
The utility model relates to an uninterrupted power source application, in particular to an automatic break-make protection device of preceding stage, system for uninterrupted power source.
Background
A UPS (Uninterruptible Power System/Uninterruptible Power Supply), that is, an Uninterruptible Power Supply, is a System device that connects a battery (mostly a lead-acid maintenance-free battery) with a host and converts direct current into commercial Power through a module circuit such as a host inverter. The power supply device is mainly used for providing stable and uninterrupted power supply for high-end equipment and important systems such as a single computer, a computer network system and the like or other power electronic equipment such as an electromagnetic valve, a pressure transmitter and the like. When the commercial power input is normal, the UPS supplies the commercial power to the load for use after stabilizing the voltage, and the UPS is an alternating current type voltage stabilizer and also charges the battery in the machine; when the commercial power is interrupted (power failure in accident), the UPS immediately supplies the direct current electric energy of the battery to the load by a method of switching and converting the inverter to continuously supply 220V/380V alternating current to ensure that the load keeps normal work and protects the software and hardware of the load from being damaged. UPS devices typically provide protection against either excessive voltage or insufficient voltage.
the uninterruptible power supply UPS may be: single phase AC 220V/three phase AC 380V. The UPS power supply system includes: a power input circuit such as a main circuit, a bypass circuit and a battery, a rectifier for AC/DC conversion, an inverter for DC/AC conversion, an inverter and bypass output switching circuit and an energy storage battery. When the AC input of the commercial power is normal, the UPS rectifies the AC into DC, and then inverts the DC into AC for the rear-stage load. When the commercial power is cut off, the UPS can start the standby energy, namely the storage battery, the rectifying circuit of the UPS can be switched off, correspondingly, the direct current of the storage battery can be inverted into alternating current, and the alternating current can be continuously used for a rear-stage load.
however, if the previous power supply (mains supply) of the UPS is over-voltage or under-voltage, the UPS must support mains supply interference. The over-voltage and under-voltage interference of the mains supply is a direct cause of faults such as breakdown and burnout of the UPS. That is to say, at present, the UPS is directly connected to the utility power, and when overvoltage, undervoltage, and overcurrent occur, the impact on the UPS is large, which causes the UPS to be burned out, broken down, and the like, and causes accidents such as power failure, damage, and the like to the high-end equipment connected with the UPS.
As shown in fig. 1, the conventional UPS connection method: the UPS is directly connected with the commercial power distribution box and directly bears the interference impact of the commercial power.
With the increase of high-end equipment and the large-scale construction of large-scale data centers, supercomputing centers and the like, the application market of the UPS becomes larger and larger, and meanwhile, the demands on the UPS, high-end equipment connected at a lower level thereof and safety protection equipment of a system are gradually increased. However, no pre-stage safety protection devices specialized for UPS and systems are currently on the market.
SUMMERY OF THE UTILITY MODEL
Therefore, the utility model provides an automatic break-make protection device of preceding stage, system and method for uninterrupted power source can protect UPS self can not damaged when external power source abnormal state.
in one aspect, a preceding stage automatic on-off protection device for an uninterruptible power supply is provided, including:
The automatic on-off reset mechanism comprises a controller, an on-off automatic reset mechanism and an on-off switch;
the input end of the controller can be connected with an external power supply, and the output end of the controller is connected with the on-off automatic resetting mechanism; the controller is configured to monitor the working state of the external power supply and send a switching-on or switching-off control instruction to the automatic switching-on/off resetting mechanism according to the change of the working state of the external power supply;
The on-off automatic reset mechanism is configured to provide execution power for switching between on and off for the on-off switch according to the control instruction;
one end of the on-off switch can be connected with the external power supply, and the other end of the on-off switch can be connected with the uninterruptible power supply and is configured to be switched on and off according to the control of the execution power.
The monitoring of the operating state of the external power supply is specifically one or more of:
when the output voltage of the external power supply is higher than the highest voltage threshold for a first predetermined time, the working state of the external power supply is an overvoltage state:
when the output current of the external power supply is higher than the highest current threshold value for a second preset time length, the working state of the external power supply is an overcurrent state;
And when the output voltage of the external power supply is lower than the minimum voltage threshold value for a third preset time length, the working state of the external power supply is an undervoltage state.
the control instruction for sending the connection or disconnection to the automatic on-off resetting mechanism according to the change of the working state of the external power supply is specifically one or more of the following:
when the external power supply is switched to an overvoltage state, an overcurrent state or an undervoltage state, sending a disconnection control instruction to the on-off automatic reset mechanism to enable the on-off switch to be switched to a disconnection state, wherein the external power supply and the uninterruptible power supply are in the disconnection state;
when the external power supply is switched to a recovery normal state, a connection control instruction is sent to the on-off automatic reset mechanism, so that the on-off switch is switched to a connection state, and the external power supply and the uninterruptible power supply are in a connection state.
The specific steps of sending a switching-on or switching-off control instruction to the automatic switching-on/off resetting mechanism according to the change of the working state of the external power supply are as follows:
And when the change of the working state of the external power supply is monitored, sending a switching-on or switching-off control instruction to the automatic switching-on and switching-off resetting mechanism after a fourth preset time.
The automatic on-off reset mechanism is a mechanical, relay or motor-driven automatic on-off reset mechanism, and the controller is preferably further configured to upload the working state of the external power supply to an information platform.
The controller is configured to collect the current of the external power supply in real time, convert the electric quantity information of the external power supply according to the current of the external power supply and upload the electric quantity information to the information platform.
In another aspect, there is provided a preceding stage automatic on-off protection system for an uninterruptible power supply, including: the automatic on-off protection device comprises an uninterrupted power supply front-stage, an external power supply and an uninterrupted power supply;
automatic on-off protection device of uninterrupted power source preceding stage includes: the automatic on-off reset mechanism comprises a controller, an on-off automatic reset mechanism and an on-off switch;
the input end of the controller can be connected with an external power supply, and the output end of the controller is connected with the on-off automatic resetting mechanism; the controller is configured to monitor the working state of the external power supply and send a switching-on or switching-off control instruction to the automatic switching-on/off resetting mechanism according to the change of the working state of the external power supply;
the on-off automatic reset mechanism is configured to provide execution power for switching between on and off for the on-off switch according to the control instruction;
one end of the on-off switch can be connected with the external power supply, and the other end of the on-off switch can be connected with the uninterruptible power supply and is configured to be switched on and off according to the control of the execution power.
The system further comprises: an information platform;
The controller is further configured to: uploading the operating state of the external power supply to the information platform, the controller being further configured to: the current of the external power supply is collected in real time, the electric quantity information of the external power supply is converted according to the current of the external power supply, and the electric quantity information is uploaded to the information platform.
In another aspect, there is provided a preceding stage automatic on-off protection method for an uninterruptible power supply, wherein the uninterruptible power supply is connected to an external power supply through an on-off switch, the method including:
Monitoring the working state of the external power supply;
And controlling the on-off switch to be switched on and off according to the change of the working state of the external power supply.
The step of controlling the on-off switch to switch between on and off includes:
Sending a switching-on or switching-off control instruction to the automatic switching-on/off reset mechanism;
And the on-off automatic resetting mechanism controls the on-off switch to be switched between on and off according to the control instruction.
The automatic on-off protection method for the preceding stage is characterized by further comprising the following steps:
Uploading the operating state of the external power supply to an information platform, and/or
The method comprises the steps of collecting the current of the external power supply in real time, converting the electric quantity information of the external power supply according to the current of the external power supply, and uploading the electric quantity information to an information platform.
the monitoring of the operating state of the external power supply is specifically one or more of:
when the output voltage of the external power supply is higher than the highest voltage threshold for a first predetermined time, the working state of the external power supply is an overvoltage state:
When the output current of the external power supply is higher than the highest current threshold value for a second preset time length, the working state of the external power supply is an overcurrent state;
And when the output voltage of the external power supply is lower than the minimum voltage threshold value for a third preset time length, the working state of the external power supply is an undervoltage state.
the control of the on-off switch to switch between on and off according to the change of the working state of the external power supply is specifically one or more of the following:
When the external power supply is switched to an overvoltage state, an overcurrent state or an undervoltage state, sending a disconnection control instruction to the on-off automatic reset mechanism to enable the on-off switch to be switched to a disconnection state, wherein the external power supply and the uninterruptible power supply are in the disconnection state;
When the external power supply is switched to a recovery normal state, a connection control instruction is sent to the on-off automatic reset mechanism, so that the on-off switch is switched to a connection state, and the external power supply and the uninterruptible power supply are in a connection state.
The step of controlling the on-off switch to switch between on and off according to the change of the working state of the external power supply comprises:
And when the change of the working state of the external power supply is monitored, sending a switching-on or switching-off control instruction to the automatic switching-on and switching-off resetting mechanism after a fourth preset time.
The utility model discloses in, between UPS and external power source, connect the automatic break-make protection device of preceding stage, when external power source is in unusual operating condition, automatic cut-off external power source and UPS between be connected, supply power for the back level load by UPS's battery. Therefore, uninterrupted power supply of the UPS rear-stage load can be guaranteed, the UPS can be protected from being impacted by the front-stage power supply, and the UPS is protected.
drawings
to the accomplishment of the foregoing and related ends, certain illustrative aspects are described herein in connection with the following description and the annexed drawings, which are indicative of various ways in which the principles disclosed herein may be practiced, and all aspects and equivalents thereof are intended to be within the scope of the claimed subject matter. The above and other objects, features and advantages of the present disclosure will become more apparent from the following detailed description read in conjunction with the accompanying drawings. Throughout this disclosure, like reference numerals generally refer to like parts or elements.
FIG. 1 illustrates a prior art connection between a UPS and a utility power supply;
Fig. 2 is a schematic connection diagram of a preceding-stage automatic on-off protection device for an uninterruptible power supply according to an embodiment of the present invention;
Fig. 3 is a schematic connection diagram of a preceding stage automatic on-off protection system for an uninterruptible power supply according to an embodiment of the present invention;
Fig. 4 is a schematic connection diagram of a preceding stage automatic on-off protection system for an uninterruptible power supply according to an application scenario of the present invention;
Fig. 5 is a schematic flow chart of a preceding stage automatic on-off protection method for an uninterruptible power supply according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
as shown in fig. 2, for an automatic on-off protection device of preceding stage for uninterrupted power supply, include:
A controller 21, an on-off automatic reset mechanism 22 and an on-off switch 23;
the input end of the controller 21 can be connected with an external power supply (see fig. 3), and the output end of the controller 21 is connected with the on-off automatic reset mechanism 22; the controller 21 is configured to monitor the working state of the external power supply and send a switching-on or switching-off control instruction to the automatic switching-on/off resetting mechanism according to the change of the working state of the external power supply;
the on-off automatic reset mechanism 22 is configured to provide the on-off switch 23 with execution power for switching between on and off according to the control command. The automatic on-off reset mechanism 22 may be a mechanical, relay, or motor-driven automatic on-off reset mechanism.
the on-off switch 23 has one end connectable to the external power source and the other end connectable to the uninterruptible power source (see fig. 3), and is configured to switch between on and off according to control of the execution power.
In the above embodiment, the preceding stage automatic on-off protection device is connected between the UPS and the external power supply, and when the external power supply is in an abnormal operating state, the connection between the external power supply and the UPS is automatically cut off, and the storage battery of the UPS supplies power to the subsequent stage load. Therefore, uninterrupted power supply of the UPS rear-stage load can be guaranteed, the UPS can be protected from being impacted by the front-stage power supply, and the UPS is protected.
wherein, the controller 21 monitors the working state of the external power supply specifically as one or more of the following:
When the output voltage of the external power supply is higher than the highest voltage threshold value for a first predetermined time length, the working state of the external power supply is an overvoltage state;
When the output current of the external power supply is higher than the highest current threshold value for a second preset time length, the working state of the external power supply is an overcurrent state;
And when the output voltage of the external power supply is lower than the minimum voltage threshold value for a third preset time length, the working state of the external power supply is an undervoltage state.
The first preset time, the second preset time and the third preset time can be set according to actual conditions, so that the protector cannot generate misoperation when transient or transient overvoltage and undervoltage occur on the circuit.
The controller 21 sends a switching-on or switching-off control instruction to the automatic switching-on/off resetting mechanism according to the change of the working state of the external power supply, specifically, the switching-on or switching-off control instruction is one or more of the following instructions:
When the external power supply is switched to an overvoltage state, an overcurrent state or an undervoltage state, sending a disconnection control instruction to the on-off automatic reset mechanism to enable the on-off switch to be switched to a disconnection state, wherein the external power supply and the uninterruptible power supply are in the disconnection state;
When the external power supply is switched to a recovery normal state, a connection control instruction is sent to the on-off automatic reset mechanism, so that the on-off switch is switched to a connection state, and the external power supply and the uninterruptible power supply are in a connection state.
in the above embodiment, the preceding-stage automatic on-off protection device is connected between the UPS and the external power supply, and the external power supply is automatically disconnected under the conditions of overvoltage, undervoltage and the like, so that overvoltage and undervoltage impact of the external power supply is cut off, and the storage battery of the UPS supplies power to the subsequent-stage load. Therefore, uninterrupted power supply of the UPS rear-stage load can be guaranteed, the UPS can be protected from being impacted by the front-stage power supply, and the UPS is protected.
The specific steps of the controller 21 sending a switching-on or switching-off control instruction to the automatic switching-on/off resetting mechanism according to the change of the working state of the external power supply are as follows: and when the change of the working state of the external power supply is monitored, sending a switching-on or switching-off control instruction to the automatic switching-on and switching-off resetting mechanism after a fourth preset time. The fourth preset time can be set according to actual conditions, so that the protector does not generate misoperation when transient or transient overvoltage occurs on the line.
The controller can also be configured to upload the working state of the external power supply to an information platform, so that the working state of the external power supply can be known in real time, and information sharing is realized. Such as a computer device that is available to the administrator.
The controller is configured to collect the current of the external power supply in real time, convert the electric quantity information of the external power supply according to the current of the external power supply and upload the electric quantity information to the information platform. Therefore, the electric quantity information of the external power supply can be known in real time, and information sharing is realized.
As shown in fig. 3, for the utility model provides an automatic break-make protection system of preceding stage for uninterrupted power source, include: the automatic on-off protection device comprises an uninterrupted power supply front-stage automatic on-off protection device 11, an external power supply 12 and an uninterrupted power supply 13; the external power source 12 may be a utility power box.
Automatic on-off protection device 11 of uninterrupted power source preceding stage includes: a controller 21, an on-off automatic reset mechanism 22 and an on-off switch 23.
the automatic on-off reset mechanism 22 may be a mechanical, relay, or motor-driven automatic on-off reset mechanism.
The input end of the controller 21 can be connected with an external power supply 12, and the output end of the controller 21 is connected with the on-off automatic reset mechanism 22; the controller 21 is configured to monitor the working state of the external power supply 12 and send a control instruction of switching on or off to the on/off automatic reset mechanism 22 according to the change of the working state of the external power supply 12;
the on-off automatic reset mechanism 22 is configured to provide execution power for switching on and off to the on-off switch 23 according to the control instruction;
The on-off switch 23 may have one end connected to the external power source 12 and the other end connected to the uninterruptible power source 12, and may be configured to switch between on and off according to control of the execution power.
In the above embodiment, the preceding stage automatic on-off protection device is connected between the UPS and the external power supply, and when the external power supply is in an abnormal operating state, the connection between the external power supply and the UPS is automatically cut off, and the storage battery of the UPS supplies power to the subsequent stage load. Therefore, uninterrupted power supply of the UPS rear-stage load can be guaranteed, the UPS can be protected from being impacted by the front-stage power supply, and the UPS is protected.
the system preferably further comprises: an information platform 14;
the controller 21 is further configured to: uploading the operating status of the external power source 12 to the information platform, the controller 21 further configured to: the current of the external power supply 12 is collected in real time, the electric quantity information of the external power supply 12 is converted according to the current of the external power supply 12, and the electric quantity information is uploaded to the information platform 14. Therefore, the utility model discloses can know external power source's operating condition and external power source's electric quantity information in real time, realize the information sharing.
Fig. 4 shows an application scenario of the present invention: UPS-automatic on-off protection device-commercial power distribution box connection diagram. The self-healing overvoltage and undervoltage protector (single-phase AC220V) is installed at the upper stage of the UPS, namely between the commercial power and the UPS. An automatic on-off protection device is connected between the commercial power distribution box and the UPS to isolate the UPS from commercial power. When the interference of the commercial power exceeds the standard, the commercial power is automatically disconnected; and after the mains supply is recovered to be normal, the automatic recovery is delayed.
The relevant connections are illustrated below:
On-off switch 23: typically a mechanical contact switch, relay, etc., is connected to the on-off automatic reset mechanism 22.
on-off automatic reset mechanism 22: under the control of the controller 21, the operations such as turning on and off are performed under the command thereof. Is connected with the on-off switch 23 and provides the on-off execution power for the on-off switch. The on-off automatic reset mechanism can be a spring, a relay coil, a motor and the like.
The switching-on action is specifically as follows: after receiving the on command of the controller 21, the reset mechanism 22 is started immediately or with a delay (a delay time can be set), and the on-off switch 23 is driven to be closed, so that the on action is realized. After the connection, the external power source (in this embodiment, the utility power box) 12 is connected to the UPS uninterruptible power supply 13.
The disconnection action is specifically as follows: after receiving the turn-off command from the controller 21, the reset mechanism 22 is immediately started to turn off the on-off switch 23, thereby realizing the turn-off action. After disconnection, the utility power distribution box 12 is disconnected from the UPS uninterruptible power supply 12, the battery pack of the UPS works to provide a dc power supply, and the dc power supply is converted into an ac power by the UPS inverter inside the UPS to provide a power supply for the next stage load 15, thereby realizing uninterruptible power supply.
The controller 21: the output end of the utility power distribution box 12, that is, the front-stage input end of the on-off switch 23 is connected through a connection cable 31. Function 1: on/off: the output voltage of the utility power distribution box 12 is monitored in real time. When the output voltage of the commercial power distribution box 12 is higher than the upper voltage limit (overvoltage) or lower than the lower voltage limit (undervoltage), the controller 21 sends an instruction to the on-off automatic reset mechanism 22 to command the on-off automatic reset mechanism to be switched off; when the output voltage of the utility power distribution box 12 is detected to be restored to the normal value range, the controller 21 sends an instruction to the on-off automatic reset mechanism 22 to command the on-off automatic reset mechanism to be switched on (immediately or in a delayed way). Function 2: and (4) fault alarm: when the output voltage of the utility power distribution box 12 is monitored to be over-voltage, under-voltage or recovered to be normal, relevant information such as failure information recovered to be normal is uploaded to the information platform 14 through the data transmission cable 33 in time, and information is shared in time. Function 3: data acquisition: the current of the commercial power distribution box 12 is collected in real time, converted into information such as electric quantity and the like, and uploaded to the information platform 33, so that timely information sharing is realized.
Controller and commercial power block terminal connecting cable 31: the power supply input end of the controller 21 is connected with the corresponding live wire and zero wire of the alternating current (single-phase 220 VAC/three-phase 380VAC) output by the commercial power distribution box 125. Providing real-time data for the controller 21 to determine the output voltage of the utility power distribution box 12.
commercial power block terminal 12: the power supply is connected with the commercial power supply to supply power for the next stage.
commercial power block terminal and on-off switch connecting cable 32: the utility power distribution box 12 is connected with the on-off switch 23.
data communication 33: the controller 21 and the information platform 14 are connected by various network connection methods such as wired LAN and wireless Wifi, and the relevant data of the controller 213 is transmitted to the information platform 14 in real time.
the information platform 14: and receiving the related data uploaded by the controller 21, analyzing and summarizing the data, and realizing data sharing.
UPS uninterruptible power supply 11: when the upper power supply is interrupted, the direct current provided by the self-contained battery pack is converted into alternating current through the UPS inverter and is provided to the load 15, so that uninterrupted power supply to the load 15 is realized.
and (4) loading 15: is a terminal device of the uninterruptible power supply 13.
in the utility model, the automatic on-off switch comprises an on/off automatic reset mechanism and an on/off switch, and is automatically cut off under the conditions of overvoltage, undervoltage, overcurrent and the like of the upper-level power supply; when the upper power supply returns to normal, the power supply is automatically switched on to return to the upper power supply. The automatic on-off switch connects the single-phase AC220V and the three-phase AC380V voltage levels, and the automatic reset mechanism can be: various mechanical, relay and motor-driven automatic disconnection and connection type switches and protectors; such as: self-recovery overvoltage and undervoltage protector.
the utility model discloses in, when the supply voltage of last level power was higher than the highest limiting voltage value, automatic disconnection, the action time can be less than 1 second. Wherein the maximum limit voltage value can be set by software or other means. The voltage is recovered to be normal, and after time delay, the circuit is automatically reset and connected without manual operation. Wherein, the delay time can be set.
And when the power supply voltage of the upper-stage power supply is lower than the lowest limit voltage value, cutting off the line, wherein the lowest limit voltage value can be set by software or other methods. When the voltage of the single-phase line returns to normal, the line is automatically reset and connected after time delay, and manual operation is not needed.
Because the time delay is set, the protector does not generate misoperation when transient or transient overvoltage occurs in the circuit.
Because the protector is provided with the connection delay, the circuit cannot be connected when the voltage is unstable or the power is suddenly cut off and the power is suddenly supplied due to faults such as unreal contacts and the like of the circuit. Wherein, the delay time can be set.
In addition, when the line fault voltage is the highest, the protector cannot be damaged.
as shown in fig. 5, it is a preceding stage automatic on-off protection method for an uninterruptible power supply, in which the uninterruptible power supply is connected to an external power supply through an on-off switch, the method includes:
step 51, monitoring the working state of the external power supply; the step is specifically one or more of the following: when the output current of the external power supply is higher than the highest current threshold value for a second predetermined time, the working state of the external power supply is an overcurrent state; and when the output voltage of the external power supply is lower than the minimum voltage threshold value for a third preset time length, the working state of the external power supply is an undervoltage state.
and step 52, controlling the on-off switch to be switched on and off according to the change of the working state of the external power supply.
In the above embodiment, the preceding-stage automatic on-off protection device is connected between the UPS and the external power supply, and the external power supply is automatically disconnected under the conditions of overvoltage, undervoltage and the like, so that overvoltage and undervoltage impact of the external power supply is cut off, and the storage battery of the UPS supplies power to the subsequent-stage load. Therefore, uninterrupted power supply of the UPS rear-stage load can be guaranteed, the UPS can be protected from being impacted by the front-stage power supply, and the UPS is protected.
the step 52 specifically includes:
Step 521, sending a switching-on or switching-off control instruction to the automatic switching-on/off reset mechanism; this step is specifically one or more of the following: when the external power supply is switched to an overvoltage state, an overcurrent state or an undervoltage state, sending a disconnection control instruction to the on-off automatic reset mechanism to enable the on-off switch to be switched to a disconnection state, wherein the external power supply and the uninterruptible power supply are in the disconnection state; when the external power supply is switched to a recovery normal state, a connection control instruction is sent to the on-off automatic reset mechanism, so that the on-off switch is switched to a connection state, and the external power supply and the uninterruptible power supply are in a connection state. The step may also be that when the change of the working state of the external power supply is monitored, a control instruction of turning on or off is sent to the automatic on-off resetting mechanism after a fourth preset time period.
And 522, controlling the on-off switch to be switched on and off by the on-off automatic resetting mechanism according to the control instruction.
optionally, the method for automatically turning on and off the preceding stage further includes:
And 53, uploading the working state of the external power supply to an information platform.
Optionally, the method for automatically turning on and off the preceding stage further includes:
And step 54, acquiring the current of the external power supply in real time, converting the electric quantity information of the external power supply according to the current of the external power supply, and uploading the electric quantity information to an information platform.
in this embodiment, the working state of the external power supply and the electric quantity information of the external power supply can be known in real time, and information sharing is realized
The utility model discloses following beneficial effect has:
The utility model utilizes an automatic on-off protection device (such as a self-recovery type overvoltage and undervoltage protector) between the UPS and the external power supply (such as a commercial power supply), automatically cuts off the commercial power under the conditions of overvoltage, undervoltage and the like of the commercial power, breaks off the overvoltage and undervoltage impact of the commercial power, and supplies power to a rear-stage load by the storage battery of the UPS. Therefore, uninterrupted power supply of the UPS rear-stage load can be guaranteed, and impact of the UPS front-stage commercial power can be protected, so that the UPS is protected.
In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed method should not be interpreted as reflecting an intention that: rather, the invention as claimed requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.
Those skilled in the art will appreciate that the modules or units or components of the devices in the examples disclosed herein may be arranged in a device as described in this embodiment or alternatively may be located in one or more devices different from the devices in this example. The modules in the foregoing examples may be combined into one module or may be further divided into multiple sub-modules.
Those skilled in the art will appreciate that the modules in the device in an embodiment may be adaptively changed and disposed in one or more devices different from the embodiment. The modules or units or components of the embodiments may be combined into one module or unit or component, and furthermore they may be divided into a plurality of sub-modules or sub-units or sub-components. All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or elements of any method or apparatus so disclosed, may be combined in any combination, except combinations where at least some of such features and/or processes or elements are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.
Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the following claims, any of the claimed embodiments may be used in any combination.
the various techniques described herein may be implemented in connection with hardware or software or, alternatively, with a combination of both. Thus, the methods and apparatus of the present invention, or certain aspects or portions thereof, may take the form of program code (i.e., instructions) embodied in tangible media, such as floppy diskettes, CD-ROMs, hard drives, or any other machine-readable storage medium, wherein, when the program is loaded into and executed by a machine, such as a computer, the machine becomes an apparatus for practicing the invention.
In the case of program code execution on programmable computers, the mobile terminal generally includes a processor, a storage medium readable by the processor (including volatile and non-volatile memory and/or storage elements), at least one input device, and at least one output device. Wherein the memory is configured to store program code; the processor is configured to execute the method for optimizing internet speed according to the instructions in the program codes stored in the memory.
furthermore, some of the described embodiments are described herein as a method or combination of method elements that can be performed by a processor of a computer system or by other means of performing the described functions. A processor having the necessary instructions for carrying out the method or method elements thus forms a means for carrying out the method or method elements. Further, the elements of the apparatus embodiments described herein are examples of the following apparatus: the apparatus is for performing functions performed by elements for the purpose of carrying out the invention.
As used herein, unless otherwise specified the use of the ordinal adjectives "first", "second", "third", etc., to describe a common object, merely indicate that different instances of like objects are being referred to, and are not intended to imply that the objects so described must be in a given sequence, either temporally, spatially, in ranking, or in any other manner.
While the invention has been described with respect to a limited number of embodiments, those skilled in the art, having benefit of this description, will appreciate that other embodiments can be devised which do not depart from the scope of the invention as described herein. Moreover, it should be noted that the language used in the specification has been principally selected for readability and instructional purposes, and may not have been selected to delineate or circumscribe the inventive subject matter. Accordingly, many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the appended claims. The disclosure of the present invention is intended to be illustrative, but not limiting, of the scope of the invention, which is set forth in the following claims.
Claims (6)
1. The utility model provides an automatic on-off protection device of preceding stage for uninterrupted power source which characterized in that includes:
the automatic on-off reset mechanism comprises a controller, an on-off automatic reset mechanism and an on-off switch;
the input end of the controller can be connected with an external power supply, and the output end of the controller is connected with the on-off automatic resetting mechanism; the controller is configured to monitor the working state of the external power supply and send a switching-on or switching-off control instruction to the automatic switching-on/off resetting mechanism according to the change of the working state of the external power supply;
The on-off automatic reset mechanism is configured to provide execution power for switching between on and off for the on-off switch according to the control instruction;
one end of the on-off switch can be connected with the external power supply, and the other end of the on-off switch can be connected with the uninterruptible power supply and is configured to be switched on and off according to the control of the execution power.
2. Foreline automatic on-off protection device according to claim 1,
The on-off automatic reset mechanism is a mechanical, relay or motor-driven on-off automatic reset mechanism.
3. the front stage automatic on-off protection device according to claim 1, wherein the controller is configured to upload the operating state of the external power supply to an information platform.
4. The apparatus of claim 3,
The controller is configured to collect the current of the external power supply in real time, convert the electric quantity information of the external power supply according to the current of the external power supply and upload the electric quantity information to the information platform.
5. a preceding stage automatic on-off protection system for an uninterruptible power supply, comprising: the automatic on-off protection device comprises an uninterrupted power supply front-stage, an external power supply and an uninterrupted power supply;
automatic on-off protection device of uninterrupted power source preceding stage includes: the automatic on-off reset mechanism comprises a controller, an on-off automatic reset mechanism and an on-off switch;
the input end of the controller can be connected with an external power supply, and the output end of the controller is connected with the on-off automatic resetting mechanism; the controller is configured to monitor the working state of the external power supply and send a switching-on or switching-off control instruction to the automatic switching-on/off resetting mechanism according to the change of the working state of the external power supply;
the on-off automatic reset mechanism is configured to provide execution power for switching between on and off for the on-off switch according to the control instruction;
One end of the on-off switch can be connected with the external power supply, and the other end of the on-off switch can be connected with the uninterruptible power supply and is configured to be switched on and off according to the control of the execution power.
6. The system of claim 5, further comprising: an information platform;
the controller is further configured to: uploading the operating state of the external power supply to the information platform, the controller being further configured to: the current of the external power supply is collected in real time, the electric quantity information of the external power supply is converted according to the current of the external power supply, and the electric quantity information is uploaded to the information platform.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920318713.0U CN209805494U (en) | 2019-03-13 | 2019-03-13 | preceding stage automatic on-off protection device and system for uninterruptible power supply |
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| CN201920318713.0U CN209805494U (en) | 2019-03-13 | 2019-03-13 | preceding stage automatic on-off protection device and system for uninterruptible power supply |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111064274A (en) * | 2019-12-30 | 2020-04-24 | 广西田东锦鑫化工有限公司 | Hard interlocking control method for stirring oil pump of decomposing tank |
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2019
- 2019-03-13 CN CN201920318713.0U patent/CN209805494U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111064274A (en) * | 2019-12-30 | 2020-04-24 | 广西田东锦鑫化工有限公司 | Hard interlocking control method for stirring oil pump of decomposing tank |
| CN111064274B (en) * | 2019-12-30 | 2023-05-16 | 广西田东锦鑫化工有限公司 | Hard interlocking control method for stirred oil pump of decomposer |
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