UPS (Uninterrupted Power Supply) external bypass power distribution system with transient change-over switch

Abstract

The utility model relates to the technical field of power supply and distribution, and provides a UPS external bypass power distribution system with a transient change-over switch, which comprises a power distribution box, a UPS, the transient change-over switch, an external bypass and a load loop, the UPS and the external bypass are respectively and electrically connected with a bus of the power distribution box, the output end of the transient change-over switch is connected with the load loop, and the load loop is connected with the UPS. One input end of the transient change-over switch is connected with the UPS, the other input end of the transient change-over switch is connected with the external bypass, and the transient change-over switch can be switched between the UPS and the external bypass so that the UPS can continuously supply power to the load loop during maintenance; according to the utility model, the switching from the UPS to the external bypass can be completed in an extremely short time through the transient change-over switch, the power failure risk of a load loop caused by the shutdown of the UPS is avoided, the UPS switching device has the characteristics of reliability, flexibility and convenience, the requirement of a special-grade load on the switching time is met, and the power supply reliability is also ensured.

Description

Technical Field

[0001] This utility model relates to the field of power supply and distribution technology, specifically to an external bypass power distribution system for a UPS with a transient transfer switch. Background Technology

[0002] As an important component of power distribution systems, UPS is widely used in critical locations such as operating rooms, intensive care units, laboratories, pathology departments, electronic factories, and small and medium-sized data centers. UPS mainly supplies power to high-level loads in these locations that have high requirements for power continuity. However, due to the use of many power electronic components, UPS systems currently experience frequent failures and require regular maintenance and replacement. Ensuring uninterrupted power supply to the end-point high-level loads during UPS maintenance or replacement is a problem that urgently needs to be solved in the use of UPS systems.

[0003] Currently, most UPS systems on the market are equipped with an internal maintenance bypass. When the UPS malfunctions or fails, the built-in system will automatically control the UPS to switch to the built-in bypass to ensure uninterrupted power supply. However, this cannot solve more complex problems such as UPS failure or complete replacement, and cannot guarantee the power supply reliability of high-end loads at the end. This can cause incalculable losses to the application sites and may even result in significant personal injury and property damage. Utility Model Content

[0004] This invention provides an external bypass power distribution system for a UPS with a transient transfer switch, which can ensure the reliability of power supply to the terminal high-level load even when the UPS fails and needs to be repaired or maintained.

[0005] This utility model provides a UPS external bypass power distribution system with a transient transfer switch, including a distribution box, a UPS, a transient transfer switch, an external bypass, and a load circuit. The UPS and the external bypass are electrically connected to the busbar of the distribution box, respectively. The output terminal of the transient transfer switch is connected to the load circuit, one input terminal of the transient transfer switch is connected to the UPS, and the other input terminal of the transient transfer switch is connected to the external bypass. The transient transfer switch can switch between the UPS and the external bypass so that the UPS can continuously supply power to the load circuit during maintenance.

[0006] According to the UPS external bypass power distribution system with transient changeover switch provided by this utility model, the UPS is provided with an outgoing circuit, which is connected to one input terminal of the UPS and is used to supply power to the load circuit when the UPS is operating normally.

[0007] According to the UPS external bypass power distribution system with transient changeover switch provided by this utility model, the UPS is provided with a main power supply circuit, and the main power supply circuit is connected to the bus.

[0008] According to the UPS external bypass power distribution system with transient changeover switch provided by this utility model, the UPS is equipped with a built-in bypass.

[0009] According to the UPS external bypass power distribution system with transient transfer switch provided by this utility model, the transient transfer switch is equipped with an intelligent controller and a display screen.

[0010] According to the UPS external bypass power distribution system with transient transfer switch provided by this utility model, the switching time of the transient transfer switch does not exceed 10ms.

[0011] According to the UPS external bypass power distribution system with transient changeover switch provided by this utility model, the power distribution box is provided with a first power supply circuit. The first power supply circuit can be electrically connected to one of the main power supply circuit, the built-in bypass and the external bypass through the bus, and the first power supply circuit is provided with an incoming circuit breaker.

[0012] According to the UPS external bypass power distribution system with transient transfer switch provided by this utility model, the power distribution box is also provided with a second power supply circuit. The second power supply circuit can be electrically connected to one of the main power supply circuit, the built-in bypass and the external bypass through the bus, and the second power supply circuit is also provided with an incoming circuit breaker.

[0013] According to the UPS external bypass power distribution system with transient transfer switch provided by this utility model, a dual power switching switch is provided between the first power supply circuit and the second power supply circuit, which is used to electrically connect the first power supply circuit or the second power supply circuit to one of the main power supply circuit, the built-in bypass and the external bypass through the bus.

[0014] According to the UPS external bypass power distribution system with transient transfer switch provided by this utility model, the main power supply circuit and the built-in bypass are equipped with UPS front-end circuit breakers, and the outgoing circuit is equipped with UPS back-end circuit breakers.

[0015] This invention provides a UPS external bypass power distribution system with a transient transfer switch. By adding a transient transfer switch and an external bypass, when the UPS is operating normally, the transient transfer switch connects to the UPS to supply power to the load circuit, and the external bypass is not powered. When the UPS malfunctions, needs replacement, or requires maintenance, the transient transfer switch switches to the external bypass, completely isolating the UPS from the power distribution system. This facilitates UPS maintenance and replacement without affecting the normal power supply to the load circuit from the distribution box, significantly reducing downtime due to equipment maintenance and improving system availability. The transient transfer switch can achieve power supply within 10 milliseconds. It completes the switching from UPS to external bypass, ensuring that the load circuit will not be interrupted during the switching process, achieving true uninterrupted power supply. It avoids the risk of load circuit power outage due to UPS shutdown and is characterized by reliability, flexibility and convenience. During use, it not only meets the switching time requirements of heavy-duty loads and ensures power supply reliability, but also allows maintenance personnel to flexibly switch the UPS on and off, facilitating inspection, maintenance and handling of various problems encountered in UPS use. It ensures the orderly operation of medical facilities, electronic factories, laboratories and other places, and can minimize the personal and property losses caused by UPS power outages. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the UPS external bypass power distribution system with transient changeover switch provided in this embodiment of the utility model.

[0018] Figure label:

[0019] 1. Distribution box; 2. UPS; 3. Transient transfer switch; 4. External bypass; 5. Load circuit; 6. Outgoing circuit; 7. Main power supply circuit; 8. Built-in bypass; 9. First power supply fallback; 10. Second power supply circuit; 11. Incoming circuit breaker; 12. Dual power transfer switch; 13. UPS front-end circuit breaker; 14. UPS rear-end circuit breaker; 15. Busbar. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] The following is combined Figure 1 This invention describes an external bypass power distribution system for a UPS with a transient changeover switch.

[0022] This embodiment provides a UPS external bypass 4 power distribution system with transient transfer switch, including a distribution box 1, a UPS 2, a transient transfer switch 3, an external bypass 4, and a load circuit 5. The UPS 2 and the external bypass 4 are electrically connected to the bus 15 of the distribution box 1, respectively. The output terminal of the transient transfer switch 3 is connected to the load circuit 5, one input terminal of the transient transfer switch 3 is connected to the UPS 2, and the other input terminal of the transient transfer switch 3 is connected to the external bypass 4. The transient transfer switch 3 can switch between the UPS 2 and the external bypass 4 so that the UPS 2 can continuously supply power to the load circuit 5 during maintenance.

[0023] As can be seen from the above scheme, compared with the traditional UPS power distribution system, this utility model adds a transient transfer switch 3 and an external bypass 4. When UPS2 is running normally, the transient transfer switch 3 is connected to UPS2 to supply power to the load circuit 5, and the external bypass 4 is not powered at this time. When UPS2 fails, needs to be replaced or repaired, the transient transfer switch 3 is controlled to switch to the external bypass 4, completely isolating UPS2 from the power distribution system, so as to facilitate the repair and replacement of UPS2, without affecting the normal power supply of the distribution box 1 to the load circuit 5, greatly reducing the downtime caused by equipment maintenance and improving the availability of the system. The transient transfer switch 3 can complete the switching from UPS2 to external bypass 4 within 10 milliseconds, ensuring that the load circuit 5 will not be interrupted during the switching process, realizing true uninterrupted power supply and avoiding the risk of power outage of the load circuit 5 due to UPS2 shutdown.

[0024] This invention achieves significant improvements in uninterrupted power supply, ease of maintenance, system flexibility, stability, and security through a fast and reliable switching mechanism. It is particularly suitable for applications with extremely high requirements for power supply continuity and reliability, such as data centers, medical facilities, and industrial production lines.

[0025] In some embodiments, the switching time of the transient transfer switch 3 does not exceed 10ms. The rapid switching capability of the transient transfer switch 3 can effectively prevent voltage fluctuations and transient interference from affecting the load circuit 5, improve the overall stability of the system, and ensure that the computer, server, communication equipment, PLC, industrial control computer and other devices are powered on without interruption under a 10ms switching time.

[0026] like Figure 1 As shown, UPS2 is equipped with an outgoing circuit 6, which is connected to one of the input terminals of UPS2 and is used to supply power to the load circuit 5 when UPS2 is running normally. When UPS2 is powered on after maintenance, the transient switch 3 is controlled to switch to the outgoing circuit 6 of UPS2 within 10ms, the external bypass (4) is de-energized, and the load circuit 5 continues to be powered by UPS2.

[0027] UPS2 is also equipped with a main power supply circuit 7 and a built-in bypass 8. The main power supply circuit 7 is connected to the bus 15 of the distribution box 1.

[0028] Preferably, the transient changeover switch 3 is equipped with an intelligent controller and a display screen. These functions enable the operator to easily set and monitor the power switching time parameters, as well as view the system status in real time.

[0029] like Figure 1 As shown, the distribution box 1 is equipped with a first power supply circuit 9, which can be electrically connected to one of the main power supply circuit 7, the built-in bypass 8, and the external bypass 4 via busbar 15. An incoming circuit breaker 11 is installed on the first power supply circuit 9. The distribution box 1 also has a second power supply circuit 10, which can be electrically connected to one of the main power supply circuit 7, the built-in bypass 8, and the external bypass 4 via busbar 15. An incoming circuit breaker 11 is also installed on the second power supply circuit 10. By installing the incoming circuit breaker 11, the distribution box 1 provides isolation and protection. When a short circuit or overload occurs downstream, the circuit is automatically cut off to prevent the accident from escalating.

[0030] Furthermore, a dual power supply switching switch 12 is provided between the first power supply circuit 9 and the second power supply circuit 10, which is used to electrically connect the first power supply circuit 9 or the second power supply circuit 10 to one of the main power supply circuit 7, the built-in bypass 8 and the external bypass 4 via the bus 15.

[0031] With this configuration, the dual power transfer switch can automatically switch power. When one power supply circuit fails, it can automatically switch to the other circuit to supply power to UPS2 in about 200ms.

[0032] like Figure 1As shown, the main power supply circuit 7 and the built-in bypass 8 are equipped with a UPS front-end circuit breaker 13, and the outgoing circuit 6 is equipped with a UPS rear-end circuit breaker 14. Its main function is to protect the cables and equipment behind it, which is the same as the function of the incoming circuit breaker 11, further improving the protection effect of the circuit system.

[0033] This utility model provides an external bypass power distribution system for a UPS with a transient transfer switch, which is reliable, flexible and convenient. Maintenance personnel can switch the UPS2 on and off flexibly and conveniently, which is convenient for inspection and maintenance, without affecting the operation of the load circuit 5, thus ensuring the reliability of power supply.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A UPS external bypass power distribution system with a transient transfer switch, characterized in that, The system includes a distribution box (1), a UPS (2), a transient transfer switch (3), an external bypass (4), and a load circuit (5). The UPS (2) and the external bypass (4) are electrically connected to the bus (15) of the distribution box (1), respectively. The output terminal of the transient transfer switch (3) is connected to the load circuit (5). One input terminal of the transient transfer switch (3) is connected to the UPS (2), and the other input terminal of the transient transfer switch (3) is connected to the external bypass (4). The transient transfer switch (3) can switch between the UPS (2) and the external bypass (4) so ​​that the UPS (2) can continuously supply power to the load circuit (5) during maintenance.

2. The UPS external bypass power distribution system with transient transfer switch according to claim 1, characterized in that, The UPS (2) is provided with an outgoing circuit (6), which is connected to one input terminal of the UPS (2) and is used to supply power to the load circuit (5) when the UPS (2) is running normally.

3. The UPS external bypass power distribution system with transient transfer switch according to claim 2, characterized in that, The UPS (2) is equipped with a main power supply circuit (7), which is connected to the bus (15).

4. The UPS external bypass power distribution system with transient transfer switch according to claim 3, characterized in that, The UPS (2) is equipped with a built-in bypass (8).

5. The UPS external bypass power distribution system with transient transfer switch according to claim 1, characterized in that, The transient changeover switch (3) is equipped with an intelligent controller and a display screen.

6. The UPS external bypass power distribution system with transient transfer switch according to claim 1, characterized in that, The switching time of the transient changeover switch (3) shall not exceed 10ms.

7. The UPS external bypass power distribution system with transient transfer switch according to claim 4, characterized in that, The distribution box (1) is provided with a first power supply circuit (9). The first power supply circuit (9) can be electrically connected to one of the main power supply circuit (7), the built-in bypass (8) and the external bypass (4) through the bus (15). The first power supply circuit (9) is provided with an incoming circuit breaker (11).

8. The UPS external bypass power distribution system with transient transfer switch according to claim 7, characterized in that, The distribution box (1) is also provided with a second power supply circuit (10). The second power supply circuit (10) can be electrically connected to one of the main power supply circuit (7), the built-in bypass (8) and the external bypass (4) through the bus (15). The second power supply circuit (10) is also provided with the incoming circuit breaker (11).

9. The UPS external bypass power distribution system with transient transfer switch according to claim 8, characterized in that, A dual power supply switching switch (12) is provided between the first power supply circuit (9) and the second power supply circuit (10) for electrically connecting the first power supply circuit (9) or the second power supply circuit (10) to one of the main power supply circuit (7), the built-in bypass (8) and the external bypass (4) through the bus (15).

10. The UPS external bypass power distribution system with transient transfer switch according to claim 4, characterized in that, The main power supply circuit (7) and the built-in bypass (8) are equipped with UPS front-end circuit breakers (13), and the outgoing circuit (6) is equipped with UPS back-end circuit breakers (14).

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