Power distribution system simultaneously powered by double mains supplies and double UPSs (Uninterrupted Power Supply)

Abstract

The utility model discloses a power distribution system simultaneously supplying power by double commercial power and double UPSs, which relates to the technical field of power supply equipment and comprises a first commercial power bus, a second commercial power bus, a power distribution cabinet, and a first UPS device, a second UPS device, a circuit breaker K1, a circuit breaker K2, a circuit breaker K3, a circuit breaker K4, a circuit breaker K5, a circuit breaker K6, an alternating current contactor KM1 and an alternating current contactor KM2 which are arranged in the power distribution cabinet. Wherein the first-section commercial power bus and the second-section commercial power bus are both divided into two paths, the third-stage equipment is connected with the first-section one-path commercial power and the second-section one-path commercial power, the second-stage equipment is connected with the alternating current contactor KM1, the first-stage equipment is connected with the alternating current contactor KM2, and when one path of commercial power is interrupted, only the third-stage equipment connected to the path of commercial power is influenced, and the third-stage equipment is not influenced. And the secondary equipment and the primary equipment are not influenced, when the two paths of mains supply are interrupted, the primary equipment can be powered by the UPS, and when one UPS is used up to stop power supply, the UPS can be switched to the other UPS to supply power, so that the power supply time is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of power supply equipment, in particular to a power distribution system with dual mains and dual UPS power supplies at the same time. Background Art

[0002] UPS, the full name of Uninterruptible Power Supply, is a constant voltage and frequency uninterruptible power supply with an energy storage device and an inverter as its main component. When the equipment is operating normally, UPS stabilizes the AC power and supplies it to the load, while also charging the battery. Once the AC power is interrupted, UPS will immediately switch to battery power to ensure the normal operation of the load until the battery is exhausted. Therefore, UPS plays a vital role in factory production areas, automation industrial areas, scientific research computer systems and backup systems, providing a guarantee for the stable operation of equipment.

[0003] The UPS system provides reliable and uninterrupted AC power for AC 220V equipment. Generally, industrial AC power supply equipment uses two independent UPS systems to supply power at the same time to avoid power outages when one UPS system fails. However, when there are many devices that need to be powered at the same time, the power supply burden of the UPS system will increase, thereby shortening the power supply time of the equipment.

[0004] Therefore, how to solve the problem of shortened power supply time due to the need to power more devices in the UPS system during power outage is an urgent problem to be solved. Utility Model Content

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] The utility model provides a power distribution system for dual mains and dual UPS power supply at the same time, comprising a mains bus section, two mains bus sections, a power distribution cabinet, and a first UPS device, a second UPS device, a circuit breaker K1, a circuit breaker K2, a circuit breaker K3, a circuit breaker K4, a circuit breaker K5, a circuit breaker K6, an AC contactor KM1, and an AC contactor KM2 arranged in the power distribution cabinet, wherein:

[0007] There are two routes for the one-section mains busbar to enter the power distribution cabinet, namely one-section mains with one route and one-section mains with two routes; there are two routes for the two-section mains busbar to enter the power distribution cabinet, namely two-section mains with one route and two-section mains with two routes;

[0008] The upper port of the circuit breaker K1 is connected to the one-way mains power supply; the lower port of the circuit breaker K1 is connected to the third-level equipment;

[0009] The upper port of the circuit breaker K4 is connected to the two-stage one-way mains power supply; the lower port of the circuit breaker K4 is connected to the three-level equipment;

[0010] The upper port of the circuit breaker K2 is connected to the one-section mains; the lower port of the circuit breaker K2 is connected to the first input terminal of the AC contactor KM1; the upper port of the circuit breaker K5 is connected to the two-section mains; the lower port of the circuit breaker K5 is connected to the second input terminal of the AC contactor KM1; the lower port of the AC contactor KM1 is connected to the secondary equipment;

[0011] The upper port of the first UPS device is connected to the one-section two-way AC power supply; the lower port of the first UPS device is connected to the upper port of the circuit breaker K3; the upper port of the second UPS device is connected to the two-section two-way AC power supply; the lower port of the second UPS device is connected to the upper port of the circuit breaker K6; the lower port of the circuit breaker K3 is connected to the first input terminal of the AC contactor KM2; the lower port of the circuit breaker K6 is connected to the second input terminal of the AC contactor KM2; the lower port of the AC contactor KM2 is connected to the primary equipment.

[0012] Furthermore, the first-level equipment is equipment that needs to maintain a stable power supply, including but not limited to a DCS control cabinet, a history station, an operator computer, and emergency lighting equipment.

[0013] Furthermore, the secondary equipment is equipment that requires power supply, including but not limited to field valves and motor control systems.

[0014] Furthermore, the third-level equipment is equipment that can be temporarily stopped in the event of a power outage, including but not limited to office air conditioners and office fans.

[0015] Compared with the prior art, the utility model has achieved the following technical effects:

[0016] The utility model discloses a power distribution system for powering by dual mains and dual UPS at the same time, and divides the power-consuming equipment into primary equipment, secondary equipment and tertiary equipment according to the power demand from high to low; wherein one section of mains bus and two sections of mains bus are divided into two routes, the tertiary equipment is connected with one section of mains and one section of mains, the secondary equipment is connected with AC contactor KM1, and the primary equipment is connected with AC contactor KM2; when a certain mains is interrupted, only the tertiary equipment connected to the mains will be affected, while the secondary equipment and the primary equipment will not be affected; when both mains are interrupted, the primary equipment can be powered by UPS, and when one of the UPS is exhausted and stops supplying power, it can be switched to the other UPS for power supply, thereby extending the power supply time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 A schematic diagram of the structure of a power distribution system for simultaneously supplying power with dual mains and dual UPS power provided by an embodiment of the utility model;

[0019] Among them: 1-section 1 mains, 101-section 1 mains 1-way mains, 102-section 1 mains 2-way mains, 2-section 2 mains, 201-section 2 mains 1-way mains, 202-section 2 mains 2-way mains, 3-power distribution cabinet, 301-first UPS device, 302-second UPS device. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0021] In the description of the present invention, it should be noted that the terminology nouns in the embodiments, such as words indicating directions such as "upper" and "lower", are only for simplifying the description of the positional relationship based on the drawings in the specification, and do not mean that the referred elements and devices must be operated according to the specific directions and defined operations and methods and structures in the specification. Such directional nouns do not constitute limitations on the present invention.

[0022] like Figure 1 As shown, the embodiment of the utility model provides a power distribution system with dual mains and dual UPS power supply at the same time, including a mains bus 1, a second mains bus 2, a power distribution cabinet 3, and a first UPS device 301, a second UPS device 302, a circuit breaker K1, a circuit breaker K2, a circuit breaker K3, a circuit breaker K4, a circuit breaker K5, a circuit breaker K6, an AC contactor KM1, and an AC contactor KM2 arranged in the power distribution cabinet, wherein:

[0023] There are two routes for the first section of the mains bus 1 to enter the distribution cabinet 3, namely, first section one mains 101 and first section two mains 102; there are two routes for the second section of the mains bus 2 to enter the distribution cabinet, namely, second section one mains 201 and second section two mains 202;

[0024] The upper port of the circuit breaker K1 is connected to the first section of the mains 101; the lower port of the circuit breaker K1 is connected to the third-level equipment;

[0025] The upper port of the circuit breaker K4 is connected to the second section of the mains 201; the lower port of the circuit breaker K4 is connected to the third level equipment;

[0026] The upper port of the circuit breaker K2 is connected to the first section of the mains 101; the lower port of the circuit breaker K2 is connected to the first input terminal of the AC contactor KM1; the upper port of the circuit breaker K5 is connected to the second section of the mains 201; the lower port of the circuit breaker K5 is connected to the second input terminal of the AC contactor KM1; the lower port of the AC contactor KM1 is connected to the secondary equipment;

[0027] The upper port of the first UPS device 301 is connected to a section of two-way AC power 102; the lower port of the first UPS device 301 is connected to the upper port of the circuit breaker K3; the upper port of the second UPS device 302 is connected to the second section of two-way AC power 202; the lower port of the second UPS device 302 is connected to the upper port of the circuit breaker K6; the lower port of the circuit breaker K3 is connected to the first input terminal of the AC contactor KM2; the lower port of the circuit breaker K6 is connected to the second input terminal of the AC contactor KM2; the lower port of the AC contactor KM2 is connected to the primary equipment.

[0028] The utility model discloses a power distribution system for supplying power simultaneously with dual mains and dual UPS, and divides power-consuming equipment into primary equipment, secondary equipment and tertiary equipment according to the power demand from high to low; wherein one section of mains bus and two sections of mains bus are divided into two routes, the tertiary equipment is connected with one section of mains and one section of mains, the secondary equipment is connected with AC contactor KM1, and the primary equipment is connected with AC contactor KM2; when a certain mains is interrupted, only the tertiary equipment connected to the mains will be affected, while the secondary equipment and the primary equipment will not be affected; when both mains are interrupted, the primary equipment can be powered by UPS, and when one of the UPS runs out of power and stops supplying power, it can be switched to the other UPS for power supply, thereby extending the power supply time.

[0029] Preferably, the primary equipment in the embodiment of the utility model is equipment that needs to maintain a stable power supply, including but not limited to a DCS control cabinet, a history station, an operator computer, and emergency lighting equipment.

[0030] Preferably, the secondary equipment in the embodiment of the utility model is a device that has certain power supply requirements, including but not limited to field valves and motor control systems.

[0031] Preferably, the third-level equipment in the embodiment of the utility model is a device that can be temporarily stopped in the event of a power outage, including but not limited to office air conditioners and office fans.

[0032] Specifically, in addition to the above-mentioned equipment, common first-level equipment may also include medical equipment, security systems, communication equipment, and key production equipment, such as: pacemakers, operating room equipment, emergency rescue communication equipment, and surveillance camera systems; second-level equipment may also generally include data centers, financial systems, traffic signal equipment, emergency lighting systems, and some industrial equipment, such as: data center servers, ATM cash machines, elevator control systems, and traffic lights; third-level equipment may also include some non-critical lighting equipment and ventilation systems, such as: general lighting fixtures, general office computers, and general exhaust systems.

[0033] It can be seen that the utility model is a power distribution system with dual mains and dual UPS power supply at the same time, which divides the power-consuming equipment into primary equipment, secondary equipment and tertiary equipment according to the power demand from high to low; one section of the mains bus and the second section of the mains bus are divided into two routes, the tertiary equipment is connected to the one-section mains and the two-section mains, the secondary equipment is connected to the AC contactor KM1, and the primary equipment is connected to the AC contactor KM2. When a certain mains power is interrupted, it will only affect the tertiary equipment connected to the mains, while the secondary equipment and the primary equipment are not affected. When both mains are interrupted, the primary equipment can be powered by the UPS, and when one of the UPS is exhausted and stops supplying power, it can be switched to the other UPS for power supply, thereby extending the power supply time.

[0034] It should be noted that, for those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is limited by the attached claims rather than the above description, so it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present invention, and any figure mark in the claims should not be regarded as limiting the claims involved.

[0035] The utility model uses specific examples to illustrate the principle and implementation of the utility model. The above is only the preferred implementation of the utility model and is not used to limit the utility model. For those skilled in the art, the utility model can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made to it without departing from the principle and spirit of the utility model shall be included in the protection scope of the utility model.

Claims

1. A power distribution system with dual mains and dual UPS power supply at the same time, characterized in that: The utility model comprises a mains bus section, a second mains bus section, a power distribution cabinet, and a first UPS device, a second UPS device, a circuit breaker K1, a circuit breaker K2, a circuit breaker K3, a circuit breaker K4, a circuit breaker K5, a circuit breaker K6, an AC contactor KM1, and an AC contactor KM2 arranged in the power distribution cabinet, wherein: There are two routes for the one-section mains busbar to enter the power distribution cabinet, namely one-section mains with one route and one-section mains with two routes; there are two routes for the two-section mains busbar to enter the power distribution cabinet, namely two-section mains with one route and two-section mains with two routes; The upper port of the circuit breaker K1 is connected to the one-way mains power supply; the lower port of the circuit breaker K1 is connected to the third-level equipment; The upper port of the circuit breaker K4 is connected to the two-stage one-way mains power supply; the lower port of the circuit breaker K4 is connected to the three-level equipment; The upper port of the circuit breaker K2 is connected to the one-section mains; the lower port of the circuit breaker K2 is connected to the first input terminal of the AC contactor KM1; the upper port of the circuit breaker K5 is connected to the two-section mains; the lower port of the circuit breaker K5 is connected to the second input terminal of the AC contactor KM1; the lower port of the AC contactor KM1 is connected to the secondary equipment; The upper port of the first UPS device is connected to the one-section two-way AC power supply; the lower port of the first UPS device is connected to the upper port of the circuit breaker K3; the upper port of the second UPS device is connected to the two-section two-way AC power supply; the lower port of the second UPS device is connected to the upper port of the circuit breaker K6; the lower port of the circuit breaker K3 is connected to the first input terminal of the AC contactor KM2; the lower port of the circuit breaker K6 is connected to the second input terminal of the AC contactor KM2; the lower port of the AC contactor KM2 is connected to the primary equipment.

2. The power distribution system with dual mains and dual UPS power supply according to claim 1, characterized in that: The primary equipment is equipment that needs to maintain a stable power supply, and the primary equipment is one or more of a DCS control cabinet, a history station, an operator computer, and an emergency lighting device.

3. The power distribution system with dual mains and dual UPS power supply according to claim 1, characterized in that: The secondary device is a device that requires power supply, and the secondary device is one or more of a field valve and a motor control system.

4. The power distribution system with dual mains and dual UPS power supply according to claim 1, characterized in that: The third-level equipment is equipment that can be temporarily stopped in the event of a power outage. The third-level equipment is one or more of an office air conditioner and an office fan.

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