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Title: Development of a Dynamic Model and Control System for Load-Following Studies of Supercritical Pulverized Coal Power Plants

Abstract

Traditional energy production plants are increasingly forced to cycle their load and operate under low-load conditions in response to growth in intermittent renewable generation. A plant-wide dynamic model of a supercritical pulverized coal (SCPC) power plant has been developed in the Aspen Plus Dynamics® (APD) software environment and the impact of advanced control strategies on the transient responses of the key variables to load-following operation and disturbances can be studied. Models of various key unit operations, such as the steam turbine, are developed in Aspen Custom Modeler® (ACM) and integrated in the APD environment. A coordinated control system (CCS) is developed above the regulatory control layer. Three control configurations are evaluated for the control of the main steam; the reheat steam temperature is also controlled. For studying servo control performance of the CCS, the load is decreased from 100% to 40% at a ramp rate of 3% load per min. The impact of a disturbance due to a change in the coal feed composition is also studied. The CCS is found to yield satisfactory performance for both servo control and disturbance rejection.

Authors:
 [1];  [1];  [1];  [1];  [2];  [3]
  1. West Virginia Univ., Morgantown, WV (United States)
  2. National Energy Technology Lab. (NETL), Morgantown, WV (United States)
  3. National Energy Technology Lab. (NETL), Pittsburgh, PA, (United States)
Publication Date:
Research Org.:
National Energy Technology Lab. (NETL), Morgantown, WV and Pittsburgh, PA (United States)
Sponsoring Org.:
FE; USDOE
OSTI Identifier:
1509721
Report Number(s):
NETL-PUB-22162
Journal ID: ISSN 2227-9717; PROCCO
Resource Type:
Accepted Manuscript
Journal Name:
Processes
Additional Journal Information:
Journal Volume: 6; Journal Issue: 11; Journal ID: ISSN 2227-9717
Publisher:
Multidisciplinary Digital Publishing Institute (MDPI)
Country of Publication:
United States
Language:
English
Subject:
dynamic modeling; process control; load-following; supercritical pulverized coal (SCPC); cycling; time-delay; smith predictor

Citation Formats

Sarda, Parikshit, Hedrick, Elijah, Reynolds, Katherine, Bhattacharyya, Debangsu, Zitney, Stephen E., and Omell, Benjamin. Development of a Dynamic Model and Control System for Load-Following Studies of Supercritical Pulverized Coal Power Plants. United States: N. p., 2018. Web. doi:10.3390/pr6110226.
Sarda, Parikshit, Hedrick, Elijah, Reynolds, Katherine, Bhattacharyya, Debangsu, Zitney, Stephen E., & Omell, Benjamin. Development of a Dynamic Model and Control System for Load-Following Studies of Supercritical Pulverized Coal Power Plants. United States. doi:10.3390/pr6110226.
Sarda, Parikshit, Hedrick, Elijah, Reynolds, Katherine, Bhattacharyya, Debangsu, Zitney, Stephen E., and Omell, Benjamin. Sat . "Development of a Dynamic Model and Control System for Load-Following Studies of Supercritical Pulverized Coal Power Plants". United States. doi:10.3390/pr6110226. https://www.osti.gov/servlets/purl/1509721.
@article{osti_1509721,
title = {Development of a Dynamic Model and Control System for Load-Following Studies of Supercritical Pulverized Coal Power Plants},
author = {Sarda, Parikshit and Hedrick, Elijah and Reynolds, Katherine and Bhattacharyya, Debangsu and Zitney, Stephen E. and Omell, Benjamin},
abstractNote = {Traditional energy production plants are increasingly forced to cycle their load and operate under low-load conditions in response to growth in intermittent renewable generation. A plant-wide dynamic model of a supercritical pulverized coal (SCPC) power plant has been developed in the Aspen Plus Dynamics® (APD) software environment and the impact of advanced control strategies on the transient responses of the key variables to load-following operation and disturbances can be studied. Models of various key unit operations, such as the steam turbine, are developed in Aspen Custom Modeler® (ACM) and integrated in the APD environment. A coordinated control system (CCS) is developed above the regulatory control layer. Three control configurations are evaluated for the control of the main steam; the reheat steam temperature is also controlled. For studying servo control performance of the CCS, the load is decreased from 100% to 40% at a ramp rate of 3% load per min. The impact of a disturbance due to a change in the coal feed composition is also studied. The CCS is found to yield satisfactory performance for both servo control and disturbance rejection.},
doi = {10.3390/pr6110226},
journal = {Processes},
number = 11,
volume = 6,
place = {United States},
year = {2018},
month = {11}
}

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