Nonlinear State and Parameter Estimation for Parabolic Trough Collector

Kannaiyan, Surender; Bhushan, Mani; Bhartiya, Sharad

doi:10.1016/j.ifacol.2018.05.072

Cited by 3 publications

(5 citation statements)

References 11 publications

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“…It can also be used in an online mode to estimate operational targets for various units in real time. − These targets can then be used as set points for lower level controller implementations. The developed dynamic model can also be used to monitor the process by using it within a state estimator that estimates both states and parameters …”

Section: Discussionmentioning

confidence: 99%

“…The developed dynamic model can also be used to monitor the process by using it within a state estimator that estimates both states and parameters. 18…”

Section: Discussionmentioning

confidence: 99%

“…The energy balance for the glass envelope in this equation includes the radiative as well as convective losses to the atmosphere. The optical efficiency is assumed to be a constant parameter in the current work, but it can be estimated online . The values of various constant parameters and notations used in eqs – are listed in Table .…”

Section: Dynamic Model Of a Solar Thermal Power Plantmentioning

confidence: 99%

“…The optical efficiency is assumed to be a constant parameter in the current work, but it can be estimated online. 18 The values of various constant parameters and notations used in eqs 1a−1c are listed in Table 1.…”

Section: Dynamic Model Of a Solar Thermal Powermentioning

confidence: 99%

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Dynamic Modeling and Simulation of a Hybrid Solar Thermal Power Plant

Kannaiyan

Bhartiya

Bhushan

2019

Ind. Eng. Chem. Res.

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A solar thermal power plant presents an environmentally friendly process for producing power. However, due to diurnal and seasonal variations in the availability of solar radiation, as well as uncertainty caused by factors such as cloud cover, efficient operation of a solar thermal power plant is a challenging task. Availability of a dynamic model which represents the process behavior in face of these inevitable variations is a prerequisite for efficiently operating the plant. In this work, we develop a dynamic model for a hybrid solar thermal power plant operating in India. The plant uses two different technologies for solar power collection, namely, a Parabolic Trough Collector (PTC) for heating oil and a Linear Fresnel Reflector (LFR) for generating direct steam. Superheated steam, generated using heat exchangers, drives the turbinegenerator block to generate electricity. The dynamic model is based on first-principles models of various components in the plant, such as PTC, LFR, heat exchangers, and storage tanks, and captures the integrated nature of plant. The model also incorporates heat losses to quantify night time cooling. A preliminary validation of the developed plant model is also presented using routine field data. The model is then used to simulate the dynamic operation of the plant for two case studies: (i) a two day simulation with field solar insolation profiles corresponding to summer days and (ii) a single day case study with cloud cover. The performances of the PTC and LFR fields as well as the overall plant were quantified and compared using various metrics. The case studies involved cold and warm startup scenarios and highlighted the impact of these initial conditions on the plant performance. The proposed dynamic model can be used for designing optimal operation and advanced control strategies.

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Section: Discussionmentioning

confidence: 99%

“…The developed dynamic model can also be used to monitor the process by using it within a state estimator that estimates both states and parameters. 18…”

Section: Discussionmentioning

confidence: 99%

Section: Dynamic Model Of a Solar Thermal Power Plantmentioning

confidence: 99%

Section: Dynamic Model Of a Solar Thermal Powermentioning

confidence: 99%

See 2 more Smart Citations

Dynamic Modeling and Simulation of a Hybrid Solar Thermal Power Plant

Kannaiyan

Bhartiya

Bhushan

2019

Ind. Eng. Chem. Res.

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“…Since this approach requires a support structure of PTC should need to investigate with a higher cost, so an alternative method of manipulating the oil flow rate through PTC has opted. The optical efficiency is assumed to be a constant parameter in the current study but it can be estimated online [32].…”

Section: ) Parabolic Trough Collector (Ptc)mentioning

confidence: 99%

Solar Collectors Modeling and Controller Design for Solar Thermal Power Plant

2020

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Electric power generation techniques utilizing solar energy urge scientists to research and develop technologies using sustainable resources on a large scale with qualities close to the ideal resource. Solar collectors are crucial components of a Solar Thermal Power plant (STP) which are required to be within a certain feasible range in order to operate and provide solar thermal resources and intermittent inputs. The closed-loop controller design for solar collectors enhances the lifespan of STP. This paper presents first principle modeling of Parabolic Trough Collector (PTC) using therminol oil and Linear Fresnel Reflector (LFR) design using water as working fluid. Using step test method linear transfer function obtained at continuous and discrete domain nominal operating range. A continuous Proportional Integral (PI) controller is designed either with Static Feed Forward (SFF) control or with Predictive Function Control (PFC). Optimal performance of the controller is based on performance indicators obtained through various case studies. INDEX TERMS Solar thermal power plant, proportional integral, parabolic trough collector, linear fresnel reflector, static feed forward, predictive function control.

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