NDLI: A Digital Controller For Testing Control Strategy At Power Plants

Content Provider	IEEE Xplore Digital Library
Author	Bollinger, K.E. Gilchrist, R. Norum, E.
Copyright Year	1979
Description	Author affiliation: University of Saskatchewan (Bollinger, K.E.)
Abstract	This paper describes the software and hardware of a programmable digital controller that was designed to enable the power system engineer to derive parameters and control strategies with a maximum degree of flexibility and efficiency during field test situations at power plants. Many test situations arise, in practical situations, where a person is attempting to determine suitable feedback parameters prior to establishing the "frozen" form of the analog, or digital, controller that will be permanently installed. In many cases prior theoretical calculations and simulation studies have enabled the designer to obtain "ball park" parameters for the controller and what is required is a further fine-tuning on-site to establish confidence that the controller, to be permanently installed, will do an adequate job. The programmable digital controller described in this paper has been tested extensively during field tests at power plants where studies were being conducted on the effect of power system stabilizer feedback to damp out local mode and inter-tie mode oscillations. The digital controller incorporates many attractive features that make it compatible with power system security. These include high impedance buffering on input and output of the digital controller, and redundant software and hardware limiting on the controller to avoid overdriving the critical control loops of the generator. One of the drawbacks of "off the shelf" microprocessors, or minicomputers in the low end price range, is the cycle time that severely limits the number of mathematical operations (multiplications, additions, etc) that can be done between A/D samples in the control algorithm. The digital controller described in this paper utilizes a microprocessor system with modifications and hardware improvements so that the digital controller is able to work in the fast feed back loops of the power plant with fairly complex and high order controllers simulated in the controller. Finally, a sample of some of the field test results obtained with the digital controller is included in the paper.
Starting Page	260
Ending Page	266
File Size	501692
Page Count	7
File Format	PDF
DOI	10.1109/PICA.1979.720076
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1979-05-15
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Digital control Power generation Hardware Control systems System testing Adaptive control Power system control Power systems Design engineering Power engineering and energy
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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