The Right Selection UPS & Harmonics

ABSTRACT

Uninterruptible Power Supply or commonly known as UPS, thought to be designed for emergency power supply, is a very common device in India. However, along with emergency power supply, it is also now used to correct other power quality problems. An UPS can be used to solve power quality issues such as over voltage, under voltage, constant frequency, noise and voltage dips. For power supply to critical equipments, UPS is also used as an isolated mode of power supply where common mode noise needs to be filtered out and protect the equipment from neutral related faults or issues in the main supply network.

But like a coin, there are two sides to everything. UPS is a solution to lot of power quality problems; it also generates harmonics, which has its own negative impact on the system. In loads like IT industries, data centers typically all loads except HVAC is fed through UPS, or in industries where major loads are fed through UPS, harmonics generated through the UPS could be a major issue. These current harmonics can cause reliability and safety issues apart from causing energy loss and derating of equipments such as transformers, motors, cables etc.

There are cases where many such installations are opting for harmonic filters to mitigate harmonics generated from UPS. However, if care is taken during the purchase of UPS, then additional investment, infrastructure and maintenance budget would not have been required for harmonic filter.

This case study presents a comparison of two UPS on test bench. The test was carried out to demonstrate low harmonics UPS.

DOWNLOAD RESOURCES

CS54-ITITES-2018-The-Right-Selection-UPS-&-Harmonics.pdf

Related POST

Global Trend in Power Quality Investment

For long time the main concern of consumers of electricity was the continuity of the supply, i.e. th..

Read more

Power Quality Aspect of Smart Grid

The prime objective of the electric power industry in this era is to meet growing demand cleanly, re..

Read more

Workshop on Energy Efficiency and Power Quality Management for IT/ITES Sector- at Delhi on 6th Feb 2018

IT/ITES is one of the major sectors that are effected due to various aspects of power quality. There..

Read more

Interactive Workshop on Power Quality and Harmonics at Pune

APQI and MSEDCL jointly hosted a full day interactive workshop on Harmonics and Power Quality at Pun..

Read more

Fundamental of Harmonics and Study of its Impact on Electrical Power System

Voltage and current functions are the foundation concepts in the power system. Nonlinear devices li..

Read more

National Conference Paper on Power Transmission & Distribution Dr. V. Kanetkar

The Transmission and Distribution systems over a period of time have grown complex as well as have b..

Read more

8th Webinar Leveraging Passive Filters to minimize Life Cycle Cost

19th May, 2016 (Thursday) - The non-linear loads are ever increasing in today's electrical and el..

Read more

7th Webinar How to calculate Electric Losses due to poor PQ?

27th November, 2015 (Thursday) - In our increasingly digital economy, maintaining power quality i..

Read more
Drop us a message

You're in the right place! Just drop us a message. How can we help?

Or see contact page
There seems to be some problem with validating your request. Please try again.
Thank You! Your message has been delivered.