CN114640171A - Uninterrupted power source maintains bypass device and uninterrupted power source system - Google Patents
Uninterrupted power source maintains bypass device and uninterrupted power source system Download PDFInfo
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- CN114640171A CN114640171A CN202210286296.2A CN202210286296A CN114640171A CN 114640171 A CN114640171 A CN 114640171A CN 202210286296 A CN202210286296 A CN 202210286296A CN 114640171 A CN114640171 A CN 114640171A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
Abstract
The application relates to the technical field of power maintenance detection, in particular to an uninterruptible power supply maintenance bypass device and an uninterruptible power supply system, which solve the technical problem that in the prior art, the uninterruptible power supply of a 35kV transformer substation has long power-off time during maintenance. When the uninterruptible power supply needs to be replaced or maintained and overhauled; the input switch is closed to conduct the current transmitted to the input end of the uninterruptible power supply to the input switch, no current passes through the input end of the uninterruptible power supply, the first switch is switched to be switched to the main circuit end to be switched on with the first power supply device, the output switch is closed, the current is output through the output switch output end and then supplies power to the load connected with the uninterruptible power supply, the load connected with the uninterruptible power supply by the bypass device is maintained by the uninterruptible power supply to form a loop, namely the bypass device is maintained by the uninterruptible power supply to play a role, at the moment, the uninterruptible power supply does not have the current to pass through, the uninterruptible power supply can be moved out, and maintenance or replacement of the uninterruptible power supply is realized.
Description
Technical Field
The application relates to the technical field of power maintenance detection, in particular to an uninterruptible power supply maintenance bypass device and an uninterruptible power supply system.
Background
The UPS, i.e., an Uninterruptible Power Supply (Uninterruptible Power Supply), is an Uninterruptible Power Supply including an energy storage device, and is a constant voltage and constant frequency Uninterruptible Power Supply mainly including an inverter. The device is mainly used for providing uninterrupted power supply for a single computer, a computer network system or other power electronic equipment. When the mains supply input is normal, the UPS supplies the mains supply to the load for use after stabilizing the voltage of the mains supply, and the UPS is an alternating current mains supply voltage stabilizer and also charges a built-in battery; when the commercial power is interrupted (power failure in accident), the UPS immediately supplies 220V alternating current to the load by the electric energy of the battery in the UPS through an inversion conversion method, so that the load can maintain normal work and the software and hardware of the load are protected from being damaged. UPS devices typically provide protection against both excessive voltages and low voltages. An Uninterruptible Power Supply (UPS) consists of an electronic power converter and a measurement and control device, and is key power supply equipment of a substation automation system. The UPS uses battery chemical energy as back energy, and provides (ac) electrical energy to the user equipment uninterruptedly when the utility power is off and the power grid fails, such as in a substation.
In the prior art, an Uninterruptible Power Supply (UPS) is key power supply equipment of a transformer substation, and when the UPS needs to be overhauled and maintained or fails in the use process, a maintenance bypass device is used for supplying power to a load connected with the UPS; however, the Uninterrupted Power Supply (UPS) currently used in a 35kV substation has a phenomenon that the power-off time is long and the continuous power supply of the load is affected when the UPS needs to be overhauled.
Disclosure of Invention
In view of this, the application provides an uninterrupted power source maintains bypass device and uninterrupted power source system, has solved among the prior art uninterrupted power source of 35kV transformer substation and has the long technical problem of outage time when overhauing.
According to one aspect of the present application, an uninterruptible power supply maintenance bypass device includes:
a first power supply device;
a first changeover switch connected to the first power supply device;
the input end of the input switch is connected with the input end of an uninterruptible power supply, and the output end of the input switch is connected with the input end of the first change-over switch;
and the input end of the output switch is connected with the output end of the first selector switch, and the output end of the output switch is connected with the output end of the uninterruptible power supply.
In one possible implementation, the first switch comprises a dual power automatic transfer switch; or
A static transfer switch.
In one possible implementation manner, the method further includes:
the output end of the second change-over switch is connected with the input end of the first change-over switch; and
and one end of the switching loop is connected with the input end of the second selector switch, and the other end of the switching loop is connected with the output end of the uninterruptible power supply.
In one possible implementation manner, the method further includes:
the first wiring terminal is arranged between the switching loop and the output end of the uninterruptible power supply, and the first wiring terminal is used for connecting the switching loop and the uninterruptible power supply.
In one possible implementation manner, the method further includes:
a first current-voltage measurement device disposed between the input switch and the first switch;
one end of the first current and voltage measuring device is connected with the output end of the input switch, and the other end of the first current and voltage measuring device is connected with the input end of the first change-over switch or the input end of the first change-over switch.
In one possible implementation manner, the method further includes:
a second current-voltage measuring device disposed between the first switch and the output switch;
one end of the second current and voltage measuring device is connected with the output end of the first change-over switch, and the second current and voltage measuring device is connected with the output end of the uninterruptible power supply.
In one possible implementation manner, the method further includes:
and one end of the second wiring terminal is connected with the input end of the uninterruptible power supply, and the other end of the second wiring terminal is connected with the input end of the input switch.
In one possible implementation manner, the method further includes:
and one end of the third wiring terminal is connected with the output end of the uninterruptible power supply, and the other end of the third wiring terminal is connected with the output end of the output switch.
In one possible implementation manner, the second connection terminal comprises a second T-shaped breakage-free connection terminal; and/or
The third connecting terminal comprises a third T-shaped breakage-free connecting terminal.
In a second aspect of the present application, an uninterruptible power supply system includes any of the uninterruptible power supply maintenance bypass devices described above.
According to the uninterruptible power supply maintenance bypass device and the uninterruptible power supply system, when the uninterruptible power supply needs to be replaced or maintained and overhauled, the input end of the uninterruptible power supply is connected with the input end of the input switch, the output end of the input switch is connected with the input end of the first change-over switch, the input end of the output switch is connected with the output end of the first change-over switch, and the output end of the output switch is connected with the output end of the uninterruptible power supply; through closed input switch, switch on the electric current that will carry for the uninterrupted power source input to input switch, uninterrupted power source's input no current passes through this moment, first change-over switch switches over and accomplishes to main circuit end and first power supply unit switch-on, closed output switch, the electric current supplies power to connecting the load for uninterrupted power source after output through the output switch output, uninterrupted power source maintains the load formation return circuit that bypass device and uninterrupted power source are connected, uninterrupted power source maintains bypass device and plays a role, uninterrupted power source no current passes through this moment, then can remove uninterrupted power source, can realize maintaining the maintenance to uninterrupted power source or changing uninterrupted power source.
Drawings
Fig. 1 is a schematic structural diagram of an ups maintenance bypass apparatus according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of an ups maintenance bypass apparatus according to another embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of an ups maintenance bypass apparatus according to another embodiment of the present disclosure.
Description of the drawings:
1. a first changeover switch; 2. an input switch; 3. an output switch; 4. a first power supply device; 5. a first connection terminal; 6. a first current-voltage measuring device; 7. a second current-voltage measuring device; 8. a second connection terminal; 9. a third connection terminal; 10. an uninterruptible power supply; 11. a second switch.
Detailed Description
In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless explicitly specifically limited otherwise. All directional indicators in the embodiments of the present application (such as upper, lower, left, right, front, rear, top, bottom … …) are only used to explain the relative positional relationship between the components, the movement, etc. in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Furthermore, reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The uninterruptible power supply is key power supply equipment of a transformer substation, and when an Uninterruptible Power Supply (UPS) needs to be repaired, maintained or failed in the using process of the uninterruptible power supply system, a maintenance bypass of the UPS needs to be used for supplying power to a load; however, the Uninterrupted Power Supply (UPS) currently used in a 35kV substation has a phenomenon that the power-off time is long and the continuous power supply of the load is affected when the UPS needs to be overhauled.
In order to realize uninterrupted power source trouble or when overhauing, can supply power for a long time, do not influence the continuous power supply of load, consequently this application designs an uninterrupted power source and overhauls bypass device. It should be noted that an Uninterruptible Power Supply (UPS) system mainly includes five parts, specifically, a main circuit, a bypass circuit, a battery and other power input circuits, a Rectifier (REC) for AC/DC conversion, an Inverter (INV) for DC/AC conversion, an inverter and bypass output switching circuit, and an energy storage battery. The uninterrupted power supply is connected with the load circuit and provides power for the load circuit.
Fig. 1 is a schematic structural diagram of an uninterruptible power supply maintenance bypass device according to an embodiment of the present disclosure, and as shown in fig. 1, the uninterruptible power supply maintenance bypass device includes: the first power supply device 4 is used for providing power for the uninterruptible power supply maintenance bypass device, and the first change-over switch 1 is connected with the first power supply device 4, and the first change-over switch 1 is used for automatically switching between the power supplies; the input end of the input switch 2 is connected with the input end of the uninterrupted power supply 10, and the output end of the input switch 2 is connected with the input end of the first switch 1; and the input end of the output switch 3 is connected with the output end of the first selector switch 1, and the output end of the output switch 3 is connected with the output end of the uninterruptible power supply 10. When the uninterruptible power supply 10 works, the voltage of commercial power alternating current input at the input side of the uninterruptible power supply 10 is 230V, the voltage of the output side is 220V, and a 10V voltage difference exists, a bypass device arranged in an uninterruptible power supply system can balance the 10V voltage difference, when the uninterruptible power supply 10 needs to be replaced or the uninterruptible power supply 10 needs to be maintained and repaired, the input end of the uninterruptible power supply 10 is connected with the input end of the input switch 2, the output end of the input switch 2 is connected with the input end of the first change-over switch 1, the input end of the output switch 3 is connected with the output end of the first change-over switch 1, and the output end of the output switch 3 is connected with the output end of the uninterruptible power supply 10; through closed input switch 2, the electric current that will carry for uninterrupted power source 10 input switches on to input switch 2, no electric current passes through at this moment for uninterrupted power source 10's input, first change over switch 1 switches over to accomplish to main circuit end and first power supply unit 4 switch-on, closed output switch 3, the electric current is to connecting the load power supply for uninterrupted power source 10 after 3 output of output switch, uninterrupted power source 10 maintains the load formation return circuit that bypass device and uninterrupted power source 10 are connected, uninterrupted power source 10 maintains the bypass device and plays a role, uninterrupted power source 10 does not have the electric current to pass through this moment, then uninterrupted power source 10 can move out, can realize maintaining maintenance or changing uninterrupted power source 10 to uninterrupted power source 10.
When the power supply of the ups 10 is recovered, after the input switch 2 and the output switch 3 need to be disconnected, the first switch 1 cannot complete the switching between the ups 10 and the first power device 4, and in order to prevent the power failure of the load connected to the ups 10, the ups 10 needs to be turned on to use the ups 10 as the load for power supply.
It should be noted that, in order to better control the ups 10, an ac incoming switch of the ups 10 is disposed at an input end of the ups 10, and an output switch 3 of the ups 10 is disposed at an output end of the ups 10.
When the input switch 2 is closed, the main circuit of the first power supply device 4 is switched on and switched off through the first change-over switch 1, the output switch 3 is closed, then the uninterruptible power supply 10 maintains the bypass device to play a role, the load of the uninterruptible power supply 10 is connected, the load is transmitted or supplied with power through the first power supply device 4, then the alternating current incoming line switch is switched off at the moment, and after the output switch 3 of the uninterruptible power supply 10 is switched off, the maintenance and the overhaul of the uninterruptible power supply 10 or the replacement of the uninterruptible power supply 10 can be realized.
When the power supply of the ups 10 is recovered, the input switch 2 and the output switch 3 need to be disconnected, that is, the ups 10 maintains the bypass device to disconnect the transmission without current to the load transmission or power supply, and at this time, the ac incoming line switch and the output switch 3 of the ups 10 need to be closed, and the ups 10 needs to be opened, so that the ups 10 is used for supplying power to the load.
Optionally, the first change-over switch 1 comprises a dual power automatic change-over switch; when the uninterruptible power supply 10 needs to be maintained and repaired, the switching operation between the uninterruptible power supply 10 and the first power supply device 4 is completed through the dual-power automatic transfer switch, and the power supply of the load is recovered. The dual-power automatic transfer switch has the functions of short circuit protection, overload protection, automatic conversion of overvoltage, undervoltage and open phase and intelligent alarm, automatic conversion parameters can be freely set outside, and the dual-power automatic transfer switch has the function of intelligent protection. Therefore, the first change-over switch 1 is an automatic change-over switch with dual power supplies, which can ensure the safe operation of the uninterruptible power supply 10 for maintaining the bypass device.
The double-power automatic transfer switch is automatically connected to a standby power supply through the double-power transfer switch when power is suddenly cut off, so that a load cannot be stopped and can still continue to operate. The dual-power automatic transfer switch is used for one path of standby power supply in a simple way, and when common power fails or is powered off suddenly, the standby power supply can be automatically switched on through the dual-power transfer switch, so that the load can still normally operate. The dual-power automatic transfer switch is a dual-power automatic transfer switch with perfect performance, safety, reliability, high automation degree and wide application range.
Specifically, the dual-power automatic transfer switch comprises a dual-power automatic transfer switch with the switching time not more than 15 ms. The purpose of selecting the dual-power automatic transfer switch with the switching time not more than 15ms is to ensure the load operation safety of the uninterruptible power supply 10 in order to ensure that the load is not powered off when the uninterruptible power supply 10 fails.
Optionally, the first change-over switch 1 comprises a static change-over switch. The static transfer switch realizes uninterrupted (<8ms) transfer between the uninterruptible power supply 10 and the first power supply, so that the amplitude, frequency and phase difference of the two paths of alternating current power supplies are controlled within a certain range. The main function is to realize the real uninterrupted conversion from the uninterruptible power supply 10 to the first power supply when the uninterruptible power supply 10 is in failure or needs to be overhauled and tested, and to forbid the access of two input power supplies which can generate reflux.
The static change-over switch is mainly used for power supply switching of two paths of power supplies and is an automatic switching system for selecting one power supply from the other power supplies. Under normal operating conditions, the load is always connected to the main power supply when the main power supply is within a normal voltage range. When the main power supply fails, the load is automatically switched to the standby power supply, and after the main power supply is recovered to be normal, the load is automatically switched to the main power supply.
In a possible implementation manner, fig. 2 is a schematic structural diagram of an uninterruptible power supply maintenance bypass apparatus according to another embodiment of the present application, and as shown in fig. 2, the maintenance bypass apparatus of an uninterruptible power supply 10 further includes: the output end of the second change-over switch 11 is connected with the input end of the first change-over switch 1; and one end of the switching loop is connected with the input end of the second selector switch 11, and the other end of the switching loop is connected with the output end of the uninterruptible power supply 10. When the ups 10 works, the input side of the ups 10 inputs the commercial power ac and the voltage thereof is 230V, the output side voltage thereof is 220V, and there is a 10V voltage difference, when the built-in bypass device of the ups 10 fails, if the ups 10 and the first power device 4 are switched by force, the inverter in the ups 10 will be burned out and the upstream switch will be tripped or the load will be burned out, and the load will be lost, therefore, in order to solve the 10V voltage difference, the input end of the first switch 1 needs to be connected to the second switch 11, and the second switch 11 is connected to the switching loop. By closing the second change-over switch 11, the second change-over switch 11 is communicated with the standby input end switched to by the first change-over switch 1, the output switch 35 is closed, at this time, the load of the output end of the uninterruptible power supply 10 is conducted with the switching loop, the second change-over switch 11, the first change-over switch 1 and the output switch 3, and at this time, the voltage output by the output switch 3 is 220V, so that the output end load of the uninterruptible power supply 10 can be connected; in the switching process of the first switch 1, the voltage difference of 10V can be balanced through the action of the second switch 11 and the switching loop; after the input switch 2 is closed, the first change-over switch 1 is automatically switched back to the main input end, and at the moment, the second change-over switch 11 and the switching loop are disconnected, so that the input switch 2 is connected with the load at the input end of the uninterruptible power supply 10, and the output switch 3 is connected with the load at the output end of the uninterruptible power supply 10; so as to realize that no current passes through the uninterruptible power supply 10 at this time, and to repair, or remove, or replace the uninterruptible power supply 10; meanwhile, the phenomenon of power failure of the load of the uninterruptible power supply 10 is avoided. Through the use of the second switch 11 and the switching loop, the output end of the output switch 3 of the bypass device for maintaining the uninterruptible power supply 10 is prevented from being directly connected to the output end of the uninterruptible power supply 10, so that when the output end of the output switch 3 is conducted with the load of the uninterruptible power supply 10, the phenomenon that the interior of the uninterruptible power supply 10 is burnt or damaged due to the voltage difference of 10V is avoided; the safety is improved.
In a possible implementation manner, fig. 3 is a schematic structural diagram of an uninterruptible power supply maintenance bypass device according to another embodiment of the present application, and as shown in fig. 2 and 3, the uninterruptible power supply 10 maintenance bypass device further includes: the first connection terminal 5 is arranged in front of the output end of the switching loop and the uninterruptible power supply 10, and the first connection terminal 5 is used for connecting the switching loop and the uninterruptible power supply 10. Through the use of the first connection terminal 5, the purpose is to enable the second change-over switch 11 and the change-over loop to be quickly connected with the circuit of the output end of the uninterruptible power supply 10, so that when the second change-over switch 11 is closed, the second change-over switch 11 and the change-over loop short-circuit the output end of the uninterruptible power supply 10, and the current flows through the second change-over switch 11 and the change-over loop to the output end of the output switch 3 to be conducted with the load of the output end of the uninterruptible power supply 10; thereby, the output circuit of the ups 10 is turned off, so that the operator can conveniently check the ups 10.
In one possible implementation, as shown in fig. 2 and 3, the first connection terminal 5 comprises a first T-shaped break-free connection terminal. The first connecting terminal 5 selects the T-shaped break-free connecting terminal to realize that the second change-over switch 11 can quickly connect and lead the output end of the uninterruptible power supply 10.
Specifically, the first connecting terminal 5 comprises a first shell, the first shell is made of polypropylene, and the first connecting terminal has the advantages of high temperature resistance, corrosion resistance and good insulating property, and can ensure personal safety during fast wiring; and set up inside the first terminal of first shell, the terminal is inside to adopt copper tin-plated material, has guaranteed electric conductive property and the contact performance of cable.
In one possible implementation, as shown in fig. 2 and 3, the maintenance bypass device of the uninterruptible power supply 10 further includes: a first current-voltage measuring device 6, the first current-voltage measuring device 6 being arranged between the input switch 2 and the first switch 1; one end of the first current and voltage measuring device 6 is connected with the output end of the input switch 2, and the other end of the first current and voltage measuring device 6 is connected with the input end of the first changeover switch 1. When the input switch 2 is closed, the first current source voltage measuring device is used to detect whether the current and voltage information flowing through the input switch 2 is correct, for example, the voltage of the input end of the uninterruptible power supply 10 is 230V, and the voltage displayed by the first current voltage measuring device is 230V, which indicates that the load connected to the input end of the uninterruptible power supply 10 at the input switch 2 is connected; the first switch 1 completes the switching of the main circuit power supply, provides power for the load of the uninterruptible power supply 10, closes the output switch 3, and the output switch 3 is communicated with the load of the output end of the uninterruptible power supply 10 so as to provide power for the load of the uninterruptible power supply 10; at this time, if the current at the input end of the ups 10 is short-circuited, the input switch 2 at the input end of the ups 10 and the output switch 3 of the ups 10 can be disconnected; the ups 10 is replaced or serviced. The first current and voltage measuring device 6 is used for monitoring the state of the input current and voltage at the input switch 2 to provide reference for operation of maintenance personnel, so that misoperation is avoided.
In one possible implementation, as shown in fig. 2 and 3, the ups maintenance bypass apparatus further includes: a second current-voltage measuring device 7, the second current-voltage measuring device 7 being arranged between the first changeover switch 1 and the output switch 3; one end of the second current and voltage measuring device 7 is connected with the output end of the first switch 1, and the second current and voltage measuring device 7 is connected with the output end of the uninterruptible power supply 10. The second current and voltage measuring device 7 is used for measuring the current and voltage output by the second change-over switch 11, provides reference for operation of maintainers and prevents misoperation.
In one possible implementation, as shown in fig. 2 and 3, the ups maintenance bypass apparatus further includes: and one end of the second wiring terminal 8 is connected with the input end of the uninterruptible power supply 10, and the other end of the second wiring terminal 8 is connected with the input end of the input switch 2. Through the use of the second connection terminal 8, the purpose is to enable the input switch 2 to be quickly connected with a line at the input end of the uninterruptible power supply 10 so as to block the current flowing into the input end of the uninterruptible power supply 10, and the current is conducted with the input switch 2; thereby, the input circuit of the ups 10 is turned off, so that the operator can conveniently check the ups 10.
In one possible implementation, as shown in fig. 2 and 3, the second connection terminal 8 comprises a first T-shaped break-free connection terminal. The second connecting terminal 8 selects a T-shaped break-free connecting terminal, so that the input switch 2 can be connected with the input end of the uninterruptible power supply 10 quickly.
Specifically, the second terminal 8 comprises a second shell, the second terminal shell is made of polypropylene, and the second terminal has the advantages of high temperature resistance, corrosion resistance and good insulating property, and can ensure personal safety during fast wiring; and set up inside the second terminal of second shell, the inside copper tinning material that adopts of terminal has guaranteed the electric conductive property and the contact performance of cable.
In one possible implementation, as shown in fig. 2 and 3, the ups maintenance bypass apparatus further includes: and one end of the third wiring terminal 9 is connected with the output end of the uninterruptible power supply 10, and the other end of the third wiring terminal 9 is connected with the output end of the output switch 3. Through the use of the third connection terminal 9, the purpose is to enable the output end of the output switch 3 to be quickly connected with the line of the output end of the uninterruptible power supply 10 so as to block the current transmitted to the output end of the uninterruptible power supply 10, and the current is conducted with the output switch 3; thereby, the input circuit of the ups 10 is disconnected, and the ups 10 can be conveniently checked by the operator.
In one possible implementation, as shown in fig. 2 and 3, the third connection terminal 9 comprises a second T-shaped break-free connection terminal. The third connecting terminal 9 selects a T-shaped break-free connecting terminal to realize that the output switch 3 can be quickly connected with the output end of the uninterrupted power supply 10.
Specifically, the third terminal 9 includes a third housing, and the third housing is made of polypropylene, so that the third terminal has the advantages of high temperature resistance, corrosion resistance and good insulation, and can ensure personal safety during fast wiring; and set up inside the third terminal of third shell, the terminal is inside to adopt copper tin-plated material, has guaranteed electric conductive property and the contact performance of cable.
In a second aspect of the present application, an uninterruptible power supply system provided by the present application includes the above-mentioned uninterruptible power supply maintenance bypass device; the uninterrupted power supply maintenance bypass device can conduct the current of the input end and the output end of the uninterrupted power supply 10, so that the circuit of the uninterrupted power supply 10 is disconnected or short-circuited, the uninterrupted power supply 10 is moved out, and the uninterrupted power supply 10 is replaced or maintained.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the present invention, and any modifications, equivalents and the like that are within the spirit and scope of the present invention should be considered as being included therein.
Claims (10)
1. An uninterruptible power supply maintenance bypass device, comprising:
a first power supply device (4);
a first changeover switch (1) connected to the first power supply device (4);
the input end of the input switch (2) is connected with the input end of an uninterruptible power supply (10), and the output end of the input switch (2) is connected with the input end of the first selector switch (1);
the input end of the output switch (3) is connected with the output end of the first change-over switch (1), and the output end of the output switch (3) is connected with the output end of the uninterruptible power supply (10).
2. The uninterruptible power supply maintenance bypass device according to claim 1, characterized in that the first diverter switch (1) comprises a dual power automatic diverter switch; or
A static transfer switch.
3. The uninterruptible power supply maintenance bypass device of claim 1, further comprising:
the output end of the second change-over switch (11) is connected with the input end of the first change-over switch (1); and
and one end of the switching loop is connected with the input end of the second selector switch (11), and the other end of the switching loop is connected with the output end of the uninterruptible power supply (10).
4. The uninterruptible power supply maintenance bypass device of claim 3, further comprising:
first binding post (5), first binding post (5) set up switch the return circuit with between uninterrupted power source (10)'s the output, first binding post (5) are used for connecting switch the return circuit with uninterrupted power source (10).
5. The uninterruptible power supply maintenance bypass device of claim 1, further comprising:
a first current-voltage measuring device (6), the first current-voltage measuring device (6) being arranged between the input switch (2) and the first changeover switch (1);
one end of the first current and voltage measuring device (6) is connected with the output end of the input switch (2), and the other end of the first current and voltage measuring device is connected with the input end of the first change-over switch (1) or connected with the input end of the first change-over switch.
6. The uninterruptible power supply maintenance bypass device of claim 1, further comprising:
a second current-voltage measuring device (7), the second current-voltage measuring device (7) being arranged between the first changeover switch (1) and the output switch (3);
one end of the second current and voltage measuring device (7) is connected with the output end of the first change-over switch (1), and the second current and voltage measuring device (7) is connected with the output end of the uninterruptible power supply (10).
7. The uninterruptible power supply maintenance bypass device of claim 1, further comprising:
second binding post (8), the one end of second binding post (8) with uninterrupted power source (10)'s input is connected, the other end of second binding post (8) with the input of input switch (2) is connected.
8. The uninterruptible power supply maintenance bypass device of claim 7, further comprising:
third binding post (9), the one end of third binding post (9) with uninterrupted power source (10)'s output is connected, the other end of third binding post (9) with the output of output switch (3) is connected.
9. The ups service bypass arrangement according to claim 8, wherein the second terminal (8) comprises a second T-break free terminal; and/or
And the third wiring terminal (9) comprises a third T-shaped breakage-free wiring terminal.
10. An uninterruptible power supply system comprising the uninterruptible power supply maintenance bypass device of any of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210286296.2A CN114640171A (en) | 2022-03-23 | 2022-03-23 | Uninterrupted power source maintains bypass device and uninterrupted power source system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210286296.2A CN114640171A (en) | 2022-03-23 | 2022-03-23 | Uninterrupted power source maintains bypass device and uninterrupted power source system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114640171A true CN114640171A (en) | 2022-06-17 |
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| CN202210286296.2A Pending CN114640171A (en) | 2022-03-23 | 2022-03-23 | Uninterrupted power source maintains bypass device and uninterrupted power source system |
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| CN (1) | CN114640171A (en) |
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