Thank you members for being patient while we had a bit of a hiatus of meetings. We are excited to get monthly meetings rolling again!
For our March meeting, we are happy to welcome Sudarshan Byreddy from Burns & McDonnel to come speak on Circuit Switcher vs. Circuit Breaker for Transformer Protection.
Presentation:
Protecting transformers from faults and transient conditions is essential for reliable utility operations and extending equipment life. This paper compares the performance of high-voltage circuit switchers and circuit breakers for transformer primary switching and protection under transformer-limited fault (TLF) conditions. Under TLF conditions, the rate of rise in recovery voltage (RRRV) during the interruption is very high, imposing significant dielectric stress on primary switching equipment. Circuit switchers are specifically designed and tested to withstand fast transient recovery voltage (TRV), offering a cost-effective alternative to circuit breakers, which may experience multiple restrikes, thermal stress and dielectric breakdown when exposed to fast TRV conditions. However, circuit switchers have limited fault-current interrupting capabilities compared to circuit breakers, particularly in extra-high-voltage applications. The presentation outlines the specifications and selection criteria for circuit breakers used for transformer protection, especially at extra-high voltages, and proposes mitigation strategies, such as grading capacitors and surge arresters, to ensure safer operation within breaker ratings and improve system reliability.
Speaker Bio:
Sudarshan received his MS degree from the University of Missouri, Kansas City in 2015. He is currently working as a Substation Technical Manager at Burns & McDonnell. Sudarshan is also a licensed Professional Engineer registered with the Texas Board of Professional Engineers(TBPE). He is the vice chair of the IEEE C37.016 working group and the IEEE PSRC I-46 working group, and the secretary of the D51 working group. He is actively contributing to the revision of several IEEE documents for the IEEE PSRC and Switchgear committees, which include C37.101, the guide for generator ground protection; C37.243, the guide for the application of digital line current differential protection using digital communications; and C57.13.3, the guide for grounding instrument transformer secondary circuits, C37.016, Standard for High voltage Circuit switchers rated 15.5kV through 245kV. Sudarshan is passionate about Electric Power Systems, and his work helps to improve the reliability and safety of electrical infrastructure.
As with all of our meetings, we will be providing lunch. If you do not pay online beforehand, we will not be purchasing lunch for you. Please reach out if there are any issues with payment and we will try to figure it out prior to the meeting. In my experience, Paypal is the easiest and has had the least issues in the past.
Excited to see everyone on the 17th!
Bldg: 777 Main, 777 Main St, Suite 2500, Fort Worth, Texas, United States, 76102, Virtual: https://events.vtools.ieee.org/m/544172