Power supply solutions for computer room UPS power supply and industrial UPS power supply. Modern computer rooms continue to develop, and the requirements for computer room construction continue to increase. Modern computer rooms require that the computer room can work all year round, so power supply has become one of the important elements of the computer room. Even if the mains power is cut off, the computer room can be guaranteed to have power supply. Use; therefore, the computer room is equipped with UPS power supply and generator, which can provide power supply to the computer room.

　　The production process of modern industry has changed from manual in the past to automation and informationization, and the degree is getting higher and higher. With this, the requirements for power supply are also getting higher and higher. There are many types of equipment in the production process of industrial factories, and their load characteristics vary, so it is necessary to choose an appropriate power supply configuration. The editor will talk about the power supply solutions for computer room UPS power supply and industrial UPS power supply.

　　Power supply solution for UPS power supply in computer room

　　1. Requirements for UPS front-stage power supply system

　　UPS can provide high-quality power to the load with high voltage stability, stable frequency, and small waveform distortion, and can achieve uninterrupted power supply when switching with static bypass. But to do this, the quality of its front-end power supply cannot be ignored. When we design the front-end power supply system of the communication room, we should consider the following aspects:

　　(1) The power quality of the front-end power supply system should not be too poor, and the voltage and frequency should be stable within the normal range.

　　(2) The front-stage power supply system should not have other frequently started loads, such as frequently used elevators, frequently turned on air conditioners, etc.

　　(3) The capacity of the alternating current generator set in the front-stage power supply system should be appropriately enlarged.

　　2. Determination of UPS capacity

　　According to the load capacity and nature, selecting the appropriate UPS can not only ensure the power supply quality of the UPS power supply, reduce the failure rate, but also save investment and improve economic benefits. Generally speaking, the determination of UPS capacity is mainly to meet the needs of the current load. At the same time, several factors must also be considered:

　　(1) The impact of load characteristics on UPS output power.

　　(2) The UPS capacity should not be too large compared to the load, causing it to operate with excessive light load.

　　(3) The UPS capacity should not be too small to keep it in heavy load operation for a long time.

　　(4) For situations where the communication computer room has a large area and the load continues to expand in stages, when configuring the UPS capacity in the early stage, the mid- and long-term development trends should be properly considered, and models that can be operated in parallel or with multiple machines should be selected during the selection. When the medium and long-term load capacity is increased, the output capacity of the UPS is expanded through parallel operation. Correspondingly, when configuring the UPS input and output power distribution panel, the input switches of multiple UPSs and medium- and long-term load shunt switches should be reserved to facilitate future expansion.

　　3. Electrical isolation and grounding of power supply system

　　Generally speaking, differential mode noise and common mode noise often exist in the power grid, and these noises interfere with the normal operation of computers to varying degrees. In addition, the offset of the zero line potential will also affect the operation of the computer, so measures should be taken to reduce these effects when considering the UPS power supply solution. For important loads such as large computer networks, the power supply system should try to use UPS power supplies with power frequency isolation transformers.

　　4. Correctly configure the UPS backup battery

　　In order to ensure that the UPS power supply can continue to supply power to the computer when the power grid is outage, the configuration of the backup battery is important.

　　The battery capacity selection should follow the following: that is, the battery must supply power to the inverter during the backup time, and under rated load, the battery pack voltage should not drop below the lower voltage allowed by the inverter. When arranging the equipment in the computer room, try to keep the battery pack as close as possible to the UPS host, shorten the length of the connection between the two, and increase the cross-sectional area of the connection to reduce the self-inductance of the connection and the voltage drop of the line. The battery pack can be installed in a battery cabinet or in an open battery rack. The former is more beautiful. It is tidy, but has higher load-bearing requirements for the floor. The latter can disperse the load-bearing and has good heat dissipation, but it occupies a large area and is easy to accumulate dust, which brings inconvenience to maintenance.

　　Industrial UPS power supply solutions

　　The production process of modern industry involves many types of equipment, and the load equipment itself and the production process require power supply. In modern factories, they can generally be divided into the following three types according to load categories:

　　1. Industrial equipment: such as semiconductor packaging equipment, SMT placement machines, etc.;

　　2. Production process management and control systems: such as DCS systems, monitoring and alarm systems, etc.;

　　3. Factory IT systems: such as ERP systems, PLM systems, etc.

　　According to different types of loads, different types of UPS power supplies can be configured to improve the system. The mains power supply and the generator set are the two main power supplies of the factory, and are switched through the ATS automatic transfer switch. After power distribution, it is connected to the UPS system. Generally speaking, industrial equipment promotes UPS parallel systems to ensure its power supply. At the same time, depending on the specific type of load, the load capacity of the UPS power supply product needs to be analyzed in detail. Many production equipment in the industry now have impact loads, so UPS products can only be configured and applied if their impact current resistance capability meets the requirements.

　　Due to the continuous improvement of automation, modern industry uses a large number of production process management and control systems. For the power supply of these systems, you can choose to use the same UPS system as the industrial equipment, or you can choose to use a separate UPS system. Since the production process management system generally does not have impact loads, the load capacity of the UPS is not high, but the intelligence of the UPS (such as remote monitoring and other functions) is relatively high.

　　Modern factories increasingly rely on the support of IT management systems such as ERP and PLM. The hardware equipment involved in this part also needs power supply guarantee. Generally speaking, it is not recommended to use the same UPS system to power the factory IT system and the production process. . In addition to high requirements for UPS power supply, factory IT systems also have other requirements such as good scalability, good maintainability, and high degree of intelligence.

　　The quality of a computer room UPS power supply solution directly determines whether the important loads in the communications computer room can operate normally. When designing the UPS power supply system in the communication room, we must not only save investment, but also consider the flexibility of the system to provide protection for communication equipment and computer loads.

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