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April 2019 Section Meeting - Compressor Surge Modeling and Control

ISA New Orleans Section

Tuesday, April 2, 2019 from 12:00 PM to 1:00 PM (CDT)

April 2019 Section Meeting - Compressor Surge Modeling...

Ticket Information

Ticket Type Sales End Price Fee Quantity
Live Audience - Member Apr 2, 2019 Free $0.00
Live Audience - Non-member Apr 2, 2019 $10.00 $0.00
Web Session - Member   more info Apr 2, 2019 Free $0.00
Web Session - Non-member Apr 2, 2019 $10.00 $0.00

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Event Details

Topic:  Compressor Surge Modeling and Control

Speaker:  Gregory McMillan, Emerson Automation Solutions

Abstract:

Axial and centrifugal compressor control is exceptionally challenging due to
the extraordinary speed and severity of problems and the extreme
consequences in terms of plant safety and performance. The fastest and most
dangerous phenomenon is surge. An axial or centrifugal compressor in surge
can reverse flow in 0.03 seconds going from a large positive flow to a large
negative flow. Often, the negative flow is not measurable by flow meters
leaving the actual situation to your imagination.


A high fidelity dynamic real time model has been developed and integrated
into a digital twin to enable a greater understanding of the special
requirements in terms of automation system speed of response and special
algorithms. The model uses a momentum balance thoroughly researched and
verified. The normally unseen compressor characteristic curve to the left of
the surge point is used enabling the model to show the jumps in flow on the
positive slopes of the characteristic curve. The unique shape and speed of
surge flow oscillations is used in the digital twin to explore, develop,
prototype, test, justify, deploy, commission and maintain the best surge
control system. The digital twin also enables not only training of operators
but education of process and automation engineers on the extreme dynamics
and control system opportunities.

A simple but powerful technique is developed for detecting a potential surge
and updating the surge curve. Control strategies are detailed that
proactively prevent surge while maximizing compressor efficiency.
Unnecessary surge valve openings are avoided and the surge controller
setpoint is optimized to lie on the longitudinal axis of efficiency
ellipses. Feedforward is used to deal with sudden disturbances from changes
in production rates and shutdown of downstream users. Additionally, a method
of optimizing the compressor discharge pressure based on user downstream
valve positions is developed. All of these control system opportunities can
be demonstrated with the actual control system connected to the model. 

Additional Information:
– Live session seating is limited, please register to reserve your seat.
– Lunch will be provided for live session attendees.  Lunch served from 11:30am – 12:00pm.
– Meeting will begin promptly at 12:00pm.
– 1.0 PDH will be awarded to Professional Engineers in attendance upon request.

 



Have questions about April 2019 Section Meeting - Compressor Surge Modeling and Control? Contact ISA New Orleans Section

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When & Where


M S Benbow & Associates
2450 Severn Avenue
Suite 400
Metairie, LA 70001

Tuesday, April 2, 2019 from 12:00 PM to 1:00 PM (CDT)


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Organizer

ISA New Orleans Section

The ISA's mission is to become the standard for automation globally by certifying industry professionals; providing education and training; publishing books and technical articles; hosting conferences and exhibitions for automation professionals; and developing standards for industry. Our vision is to work in partnership with members, customers, and subject-matter experts to disseminate the highest quality, unbiased automation information worldwide.

The ISA New Orleans Section has been active in the New Orleans Metropolitan Area, which includes Orleans Parish, Jefferson Parish, St. Tammany Parish, St. Charles Parish, St. John Parish, Plaquemines Parish, and other surrounding parishes for 70 years.

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