ISA Interchange

Welcome to the official blog of the International Society of Automation (ISA).

This blog covers numerous topics on industrial automation such as operations & management, continuous & batch processing, connectivity, manufacturing & machine control, and Industry 4.0.

The material and information contained on this website is for general information purposes only. ISA blog posts may be authored by ISA staff and guest authors from the automation community. Views and opinions expressed by a guest author are solely their own, and do not necessarily represent those of ISA. Posts made by guest authors have been subject to peer review.

All Posts

PID Power System Stabilizer for Damping Low Frequency Oscillations

 

This post is an excerpt from the journal ISA Transactions. All ISA Transactions articles are free to ISA members, or can be purchased from Elsevier Press.

 

 

 

Abstract: This paper explores a two-level control strategy by blending a local controller with a centralized controller for the low frequency oscillations in a power system. The proposed control scheme provides stabilization of local modes using a local controller and minimizes the effect of inter-connection of sub-systems performance through a centralized control. For designing the local controllers in the form of proportional-integral power system stabilizer (PI-PSS), a simple and straight forward frequency domain direct synthesis method is considered that works on use of a suitable reference model which is based on the desired requirements. Several examples both on one machine infinite bus and multi-machine systems taken from the literature are illustrated to show the efficacy of the proposed PI-PSS. The effective damping of the systems is found to be increased remarkably which is reflected in the time-responses; even unstable operation has been stabilized with improved damping after applying the proposed controller. The proposed controllers give remarkable improvement in damping the oscillations in all the illustrations considered here and as for example, the value of damping factor has been increased from 0.0217 to 0.666 in Example 1. The simulation results obtained by the proposed control strategy are favorably compared with some controllers prevalent in the literature.

 

Free Bonus! To read the full version of this ISA Transactions article, click here.

 

Enjoy this technical resource article? Join ISA and get free access to all ISA Transactions articles as well as a wealth of other technical content, plus professional networking and discounts on technical training, books, conferences, and professional certification.

Click here to join ISA ... learn, advance, succeed!

2006-2019 Elsevier Science Ltd. All rights reserved.


Related Posts

How to Use HVAC Digital Twins for Better Facility Operations

Digital twins provide improved visibility by facilitating planning, preparedness and predictions. Many pe...
Emily Newton Sep 19, 2023 8:00:00 AM

Get Involved With ISA During Volunteer Month

Can you guess how many volunteers it takes to operate the ISA Society? See the answer at the end of this ...
Marty Bince Sep 15, 2023 8:00:00 AM

Manufacturers Must Reduce Risk of Upstream and Downstream Supply Chain Attacks

Supply chain disruptions are among the most pressing issues for today’s manufacturers. While geopolitical...
Emily Newton Sep 12, 2023 12:38:32 PM