AC UPS uninterruptible power supply solution on the highway. In order to ensure the stability of power consumption and the timeliness of services in key locations such as highway tunnels, toll stations, monitoring centers, substations, and self-distribution power generation centers, UPS uninterruptible power supplies and other measures are adopted for management and maintenance to ensure the reliability of high-speed electromechanical systems. Stable job.

　　AC UPS uninterruptible power supply solution background:

　　At present, expressways are built far away from urban areas, and the power sources used in toll stations and tunnels are nearby, using nearby agricultural or civilian electricity. Compared with the high-voltage dedicated line power supply method, this power supply method has less one-time investment. However, before the 1990s, there was less investment in power grid construction. The power grid, especially the rural power grid, was very weak. Normal power supply for agriculture or civilian use could not be guaranteed. Many faults and unstable voltage make it difficult to guarantee the quality of power supply.

　　In order to ensure that the important equipment of the highway management system can work normally after external agricultural or civil power is interrupted for some reason, the power supply and distribution system of the highway needs to be powered by UPS power. Generally, diesel generator sets are used to generate electricity as backup power sources for the mains. They can automatically operate the diesel generator sets to start generating electricity within 10 to 15 seconds after a power outage and automatically switch through dual power switches to ensure power supply to important loads. For particularly important loads among the primary loads, in addition to being powered by two power sources, an uninterruptible power supply UPS should be added, and it is strictly prohibited to connect other loads to the uninterrupted power supply system.

　　In the construction of these highways, a large amount of supporting equipment is required. Modern high-grade roads require automation, informatization, and intelligence, and their monitoring, management, toll collection and other systems must have reliable, stable, and high-quality power guarantees.

　　In order to ensure the application in high-level highway communication, monitoring, and toll collection systems, to ensure the stable operation of system data communication, image monitoring, and billing networks. The monitoring equipment in the highway tunnel machine room, lane signs in the tunnel, traffic lights, cameras, CO/VI detectors, light intensity detectors, fire alarm equipment, local controllers and transmission equipment are all powered by UPS.

　　AC UPS uninterruptible power supply solution on the highway:

　　In the various mechanical and electrical systems of highway traffic, the main power supply needs to use AC uninterruptible power supply UPS device to ensure normal operation of the functional systems: highway power supply and distribution system to various toll collection systems along the road, communication systems, tunnel ventilation and lighting, operation monitoring Providing reliable power guarantee, these loads ensure the safe and reliable operation of the entire highway and the normal operation of the operating units from different angles.

　　It is no exaggeration to say that the normal operation of the power system is the basic guarantee for the normal operation of the highway's electromechanical system and even the entire highway. Among them, toll stations: Using UPS uninterruptible power supply to ensure the normal operation of toll stations is an important part of ensuring smooth roads. A voltage regulator + UPS1+1 parallel power supply solution is proposed. The details are as follows:

　　1. The charging system, communication system, and monitoring system are particularly important loads among the first-level loads. In addition to being powered by two power supplies, a UPS power supply should be added to ensure the reliability of the power supply.

　　2. The two input power sources use one mains power and a local diesel generator. The two power sources are connected to the "mutual switch cabinet" at the same time to realize the automatic switching function of first off and then on.

　　3. The mains input end is equipped with Class B lightning protection, and the dual power supply output end is equipped with Class C lightning protection.

　　4. The input power distribution cabinet and output power distribution cabinet can be combined into an integrated cabinet according to actual needs.

　　5. UPS uninterruptible power supply adopts 1+1 parallel redundancy scheme.

　　6. The UPS has dynamic data remote monitoring function. In case of emergencies, the UPS must be able to be shut down remotely.

　　7. The UPS power supply has the intelligent management function of the battery pack and the ability to detect leakage.

　　8. Optimize investment in backup battery packs and improve space utilization in the computer room.

　　The highway AC UPS uninterruptible power supply adopts a double-conversion online structure design, and the input end can be used for dual-circuit power supply; it adopts advanced IGBT high-frequency sine wave pulse width modulation design, so that the UPS power supply has good quality, high efficiency, low heat loss and noise Low, small size and long life; using modular design, significantly reducing the mean time to repair (MTTR), making maintenance easier, using the digital design of the microprocessor to simplify complex analog circuits and greatly reduce the number of parts , making the system more secure and reliable. The whole machine also optimizes the heat dissipation structure and adopts intelligent fan control technology to reduce UPS noise and reduce UPS installation space requirements.

　　AC UPS uninterruptible power supplies are widely used in high-speed electromechanical systems. The introduction of UPS power management ensures reliable, stable and safe operation of the system. Most of the electromechanical systems of expressways are distributed along the line and contain a wide variety of equipment, such as monitoring, computer and communication equipment. Since relatively open and remote areas are permanent points on expressways, UPS is commonly used to realize the capabilities of their electromechanical systems. Stable power supply to reduce hazards and losses caused by voltage instability or system power outages.

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