S&C power quality solutions

A UPS might be the right answer for your power quality problem. Or it might not.

No two installations have the same power quality needs. That’s why S&C Electric Company offers a family of products that provides solutions to your power quality problems.

PureWave UPS™ Systems
S&C’s PureWave UPS™ System provides enhanced service continuity to facilities served by a single utility source. The PureWave UPS System protects power-sensitive equipment from the detrimental effects of disturbances such as voltage sags, momentary disruptions, and complete outages. This unique Smart Grid solution supports the entire load with clean power for up to 60 seconds, eliminating 99% of all power quality problems and supports reduced loads for up to 180 seconds. A high-efficiency static switch provides a 2- to 4-millisecond response.

The PureWave UPS System can be coordinated with a backup generator set, assuring seamless service through extended outages. Ride-through time can be tailored to permit start-up, then “soft” load transfer to the backup generator, for 100% protection through extended outages. No costly utility paralleling switchgear is needed. The backup generator can be sized up to 35% smaller than with conventional UPS systems. The system features a reliable off-line design which utilizes maintenance-free batteries with non-prorated 5-year warranty, increasing battery life and reducing maintenance. Installable outdoors, the system is completely self-contained in a NEMA 3R (IP 53) enclosure, with an exceptionally small footprint. This also increases savings due to reduced interior air-conditioning load. The PureWave UPS System can provide power protection for an entire facility and is available in a wide range of capacities: low-voltage models from 313 kVA up to 2500 kVA, and medium-voltage models from 2.5 MVA to 20 MVA for 5- to 25-kV applications. As the critical load grows, additional 313-kVA modules can be added at any time to the capacity required for your present critical load. As many as eight 2.5-MVA containers can be paralleled to protect medium-voltage loads up to 20 MVA.

PureWave DSTATCOM® Distributed Static Compensator
S&C’s PureWave DSTATCOM Distributed Static Compensator is a fast-compensating reactive power source that’s applied on the transmission or distribution system to reduce voltage variations such as sags and flicker, along with instability caused by rapidly varying reactive power demand. It can provide quick recovery for the transmission system after contingency events such as loss of part of the system and provides ultra-fast voltage control by providing leading and lagging reactive power for utility applications.

It protects the distribution system from voltage flicker caused by the rapidly varying current draw of large non-linear reactive loads up to 60 MVA. PureWave DSTATCOM is well suited to a major goal of the Smart Grid: Integration of renewable energy sources, such as wind and tidal power generation. It allows these renewable energy sources to meet utility interconnection requirements and the power factor, voltage output, and low-voltage ride-through requirements of various worldwide grid codes. PureWave DSTATCOM has been applied on a number of utility systems and wind farms since the late 1990s, meeting or exceeding all specifications.

Smart Grid SMS™ Storage Management System
The Smart Grid SMS Storage Management System is suitable for a wide range of applications, including peak shaving at the point of common connection to the grid, frequency or power factor regulation, energy arbitrage, and power for black-start situations. The stored energy can be used to reduce substation loading or can be applied in a net-metering arrangement with onsite generation. It can also be applied to improve local power quality and reliability for a feeder or a specific customer. A few applications where this system can be utilized:

• UPS for Data Centers. The SMS is the largest capacity static inverter pack available in the UPS industry. Its high capacity, and ability to function at medium voltage, gives data center designers greater flexibility than ever before. Its robust design is capable of powering complete data center loads, including air conditioning chiller systems. Single bus systems up to 24,000 kW are possible with the SMS.
•SMS for Renewable Energy. Solar and wind energy are intermittent power sources that the grid must accept whenever available. The SMS can store the power when it’s produced, and then use that energy for generation ramp-rate control, output-smoothing, or time-shifting eliminating the need for replacement power.
• Grid-Scale Energy Storage. The SMS can deliver up to 2 MW of stored energy to the grid from any type of battery storage system.
• Islanding. When applied with S&C’s IntelliTeam SG™ Automatic Restoration System, the SMS can be used in remote areas, during power outages. Upon loss of utility power, IntelliTEAM SG reconfigures the distribution system and uses the stored energy to serve local customers for as long as 7 hours.
•Peak Shaving. During high demand periods, the SMS can provide full output for up to 7 hours which reduces the system peak, deferring the need for capacity additions on the distribution or transmission system.