Case Study of HT Reactor failure? A Resonance Phenomenon in 11KV Water Pumping Station

ABSTRACT

A booster pumping station (BPS) in South India with high power HT pumping motors reported sudden failures due to flashover of the current limiting reactors of the PF correction capacitor circuit. The pumping circuit has its own power factor correction capacitor circuits. The failures were reported repeatedly over three/ four days during December 2009. Extensive re?look on design aspects and simulations studies pointed out no major design issues. Finally it was concluded that the failures were due to the inherent design and workmanship limitations of the reactors itself to handle transient over currents during switching. To find out the specific reasons for such failures (which happened after three to four years’ of working), it was decided to undertake power quality studies. With the long duration of logging at identified points it was noted that at certain random periods , the voltage and current total harmonic distortions increases abnormally high. It was also noted that the predominant harmonic content was the 13th. Detailed investigations provided the reason for such random failures due to the resonance situation in the Pf compensation LC circuit which resonates at 13th harmonic.This has lead to shunt resonance situation for the LC circuit resulting into the failure of the reactor. Larger sized current limiting reactors were found to be the best and economical solution in this case.

DOWNLOAD RESOURCES

CS31-ENGG-2012-Case-Study-of-Ht-Reactor-Failure.pdf

Related POST

POWER QUALITY Appraisal Approach For FY20!

Much like December, March is also a time to reflect on the past (financial) year. As we compare our ..

Read more

Evaluating Economic Loss Incidents Due To Poor PQ

A loss, in general, is to be avoided. Of all the various types of losses, economic loss is probably ..

Read more

19th Energy Efficiency Summit 2020 (25th to 28th Aug Digital Event Platform)

The objectives of the Energy Efficiency Summit are: Facilitate Indian industry to improve Energy Ef..

Read more

Two Day Workshop With Appc on Energy Efficiency In Pharmaceutical Industry

A two day workshop with APPC on Energy Efficiency in Pharmaceutical Industry was hosted on 11th and ..

Read more

The Right Selection UPS & Harmonics

Uninterruptible Power Supply or commonly known as UPS, thought to be designed for emergency power su..

Read more

UNEP Survey Report Power Quality for Indonesia, Thailand and Vietnam

Electric power quality (PQ) disturbances can have significant economic consequences for many differe..

Read more

4th Webinar Innovations In PQ Interventions

21st May, 2015 (Thursday) - Power Quality, one of the major issues in electricity distribution s..

Read more

19th Webinar - India's Electric Mobility Ambitions - Can Power Quality issues lead to flat tyres?

30th October, 2020 (Friday) - India's speed of adopting Electric Vehicles can be defined but with on..

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.