Cloud computing and the digital revolution become the most dynamic sector in the data center industry. In order to ensure reliable operation, data centers need a continuous supply of clean electric power.
ABB has an extensive range of power protection products for data center applications. One of the major concerns of any data center is preventing outages and other voltage events from affecting the server load.
Uninterruptible power supplies (UPS) systems are the ideal solution, and ABB has a wide range of both modular and standalone UPS systems. The server protection is enabled through Conceptpower DPA and PowerWave 33 that make use of a highly modular distributed parallel architecture (DPA) thereby ensuring system availability, high reliability and an ability to scale up.
ABB also has innovative products including industrially rated UPSs and voltage conditioners that can be used to protect sophisticated industrial processes like the manufacture of liquid crystal and silicon chip display. The PCS100 UPS-I and AVC are suitable for protecting direct connected motor and motor drive loads with sensitive electronics. These products are also employed in data centers and serve as an ideal choice for protecting the balance of data center loads such as air-conditioning data centers that require short outage protection or voltage conditioning.
Applications of UPS-I
The UPS-I can also be used for protecting servers in large and specialized applications. For instance, UPS-I can be an ideal solution for an extremely small product footprint design having compatibility with new generation storage technologies including lithium ion batteries and super capacitors.
The UPS-I is a single conversion modular redundant design having a centralized static bypass with more than 99% system efficiency. The MV UPS-I range is available in low voltage module ranges from 208, 400 through to 480VAC and medium voltage ranges with up to 6MVA ratings. It can be suitable for protecting Mega scale data centers.
ABB recently installed a rotary UPS systems at a Swiss government data center to protect against voltage disruptions. ABB's PCS100 UPS-I has high electrical efficiency and small footprint design, and hence it serves as a suitable solution for the retrofit into the data center. Four UPS-I systems with 1800kW/2000kVA capacity were further chosen and ordered. Figure 1 shows the PCS100 UPS-I (150 kVA to 3000 kVA).
Figure 1. PCS100 UPS-I (150 kVA to 3000 kVA)
Voltage Conditioning Applications
UPS systems require a high level of battery maintenance and replacement and hence they come at a high operational cost. Nearly 90 to 95% of the problematic voltage events in a typical power system is due to voltages sags which can be rectified using a voltage conditioner.
ABB's PCS100 AVC range of active voltage conditioners rectifies surges and voltage sags in few milliseconds without affecting the efficiency of the system. These AVCs can be used for applications that do not demand outage ride through, which includes conditioning the alternative feed during a dual reticulated server protection application, conditioning the data center load balance to avoid nuisance trips and bypass (or reserve) supply conditioners for UPSs. Figure 2 shows the PCS100 AVC (150 kVA to 2.4 MVA).
Figure 2. PCS100 AVC (150 kVA to 2.4 MVA)
Current Conditioning Applications
Harmonic power factor problems can also occur due to power electronic loads on the balance of data center as well as servers. Wave shaping rectifiers are used in most of the servers in switch mode. However, under light loading conditions, these solutions tend to draw leading reactive current. Most of these supplies operate under lightly loaded conditions as they are redundantly configured.
High electric charges from the utility can be due to problems in harmonics and power factors that lead to increased power loading on the electrical supply. Most of the data centers employ standby diesel generators, and hence they may need considerable de-rating for supply imbalance, harmonics and poor power factor. Even low levels of leading reactive current can make the alternator enter an unsafe operating area and lose voltage control.
The PCS100 RPC Reactive Power Conditioner serves as an ideal solution for low order harmonic and power factor problems. The flexible control and rapid operation of the conditioner resolves complex power factor problems including leading power factor. Besides this, RPC can also rectify negative sequence current in diesel generators and supply imbalance.
ABB has a wide range of power protection products that ensure operation of data centers with high levels of energy efficiency, availability and reliability.
About ABB Power Conditioning - Discrete Automation and Motion Division
ABB is a leading supplier of UPS and power conditioning products – ABB's PCS100 portfolio is a unique line up of low and medium voltage power conversion technology. The PCS100 power converters demonstrate highly reliable and cost-effective performance. With the PCS100 product portfolio, ABB offer efficient power conversion solutions that are specifically designed to solve power quality problems and stabilize networks. Covering applications from data centers through to complete industrial plant protection, microgrid systems and shore-to-ship supply, ABB have the power conversion technology for every need. Starting from a few kVA to many MVA and a wide range of supply voltages. ABB has installed more than 900 MW of power conditioning solutions worldwide. It’s business as usual with ABB Power Protection
This information has been sourced, reviewed and adapted from materials provided by ABB Power Conditioning - Discrete Automation and Motion Division.
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