High-stability low-voltage three-power-supply power distribution system
By employing a dual-power automatic switching device with two mains power sources and one generator in the low-voltage power distribution system, combined with built-in start/stop function and interlocking mechanism, the problems of shortened lifespan and unstable power supply caused by frequent generator start-stop are solved, achieving highly stable power supply and meeting the power supply needs of important occasions.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-07
- Publication Date
- 2026-04-03
AI Technical Summary
In traditional low-voltage power distribution systems, frequent generator starts and stops shorten lifespan and cause unstable power supply quality, affecting the safe operation of equipment in critical situations.
It adopts two mains power sources and one generator, and achieves automatic switching through two sets of dual power automatic switching devices to reduce the number of generator start-stops. It is also equipped with a dual power automatic switching device with generator start/stop function, combined with wire rope and electrical interlock to ensure safe switching.
It improves the stability of low-voltage power distribution systems, extends the service life of generators, and ensures the stability of power supply in important locations such as broadcasting stations, hospitals, and airports.
Smart Images
Figure CN224083258U_ABST
Abstract
Description
Technical Field
[0001] This system belongs to the field of switchgear power distribution systems, and in particular relates to a high-stability low-voltage three-power distribution system. Background Technology
[0002] Traditional low-voltage power distribution systems typically use one mains power supply and one generator, powered by an automatic dual-power transfer device. This method leads to frequent generator starts and stops, which accelerates wear and tear on internal components and shortens the generator's lifespan. Generator lifespan is affected by various factors, such as generator quality, operating environment, and maintenance. To extend generator lifespan, measures need to be taken to reduce the number of start-stop cycles, thereby minimizing the impact on generator lifespan. However, frequent generator starts also cause instability in the power supply quality of the low-voltage distribution system.
[0003] Some important venues, such as broadcasting stations, hospitals, and airports, require a very stable power distribution system for power supply.
[0004] As can be seen from the above, the traditional power distribution system with one mains power supply and one generator has unstable power quality, which affects the operation of equipment in important situations and poses safety hazards. Utility Model Content
[0005] The purpose of this utility model is to improve the shortcomings of existing technologies and provide a highly stable low-voltage three-power distribution system that enhances the stability of low-voltage power distribution systems, reduces the number of generator start-ups and shutdowns, extends motor life, and provides stable power supply.
[0006] The purpose of this utility model is achieved as follows: a highly stable low-voltage three-power distribution system, characterized by including two mains power lines L1 and L2, a generator M, and two sets of dual-power automatic transfer switches QCS1 and QCS2. One mains power line L1 is connected to the actuator circuit breaker QF1 of the dual-power automatic transfer switch QCS1, and the other mains power line L2 is connected to the actuator circuit breaker QF2 of the dual-power automatic transfer switch QCS1. The output power after conversion by the dual-power automatic transfer switch QCS1 is connected to the actuator circuit breaker QF1 of the dual-power automatic transfer switch QCS2. The generator M is connected to the actuator circuit breaker QF2 of the dual-power automatic transfer switch QCS2. The output power after conversion by the dual-power automatic transfer switch QCS2 is used to supply power to the low-voltage distribution system.
[0007] Compared with existing technologies, this utility model has the following significant features and positive effects: This utility model uses a dual-power automatic switching device to automatically switch between two mains power sources and one generator. The operation is safe and reliable. The dual-power automatic switching device has a built-in generator start / stop function, enabling unattended operation. The device is equipped with wire rope mechanical and electrical interlocks to ensure safe power system switching, improve the stability of the power distribution system, and reduce the number of generator start-stop cycles. This utility model improves the stability of the low-voltage power distribution system and reduces the number of generator start-stop cycles, thereby reducing the impact on motor lifespan. It solves the problem of power supply in important situations such as broadcast stations, hospitals, and airports, where a highly stable power distribution system is required. Attached Figure Description
[0008] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation
[0009] A highly stable low-voltage three-power distribution system, referring to Figure 1 It includes two mains power supplies, L1 and L2, a generator M, and two sets of dual power automatic transfer switches, QCS1 and QCS2. One mains power supply, L1, is connected to the input terminal of the actuator circuit breaker QF1 of the dual power automatic transfer switch QCS1, and the other mains power supply, L2, is connected to the input terminal of the actuator circuit breaker QF2 of the dual power automatic transfer switch QCS1. The output power after conversion by the dual power automatic transfer switch QCS1 is connected to the input terminal of the actuator circuit breaker QF1 of the dual power automatic transfer switch QCS2. The generator M is connected to the input terminal of the actuator circuit breaker QF2 of the dual power automatic transfer switch QCS2. The output power after conversion by the dual power automatic transfer switch QCS2 is used to supply power to the low-voltage power distribution system.
[0010] In this embodiment, the mains power L1 and L2, the generator M, and the dual power automatic transfer switch QCS1 and QCS2 are all conventional technologies and products. In this embodiment, the dual power automatic transfer switch QCS1 and QCS2 adopt Schneider ATMT12 / 4P-2A T+L (MT12N2, MIC5.0A).
Claims
1. A high stability low voltage three power supply distribution system characterized by Including two way city electricity L1 and L2, generator M and two sets of double power automatic switching device QCS1 and QCS2, one way city electricity L1 connects to double power automatic switching device QCS1's execution circuit breaker QF1, another way city electricity L2 connects to double power automatic switching device QCS1's execution circuit breaker QF2, double power automatic switching device QCS1 converted output power source connects to double power automatic switching device QCS2's execution circuit breaker QF1, generator M connects to double power automatic switching device QCS2's execution circuit breaker QF2, after double power automatic switching device QCS2 conversion output power source is used for low voltage distribution system power supply.