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Research Papers

Intelligent Fault Tolerant Energy Management System With Layered Architecture for a Photovoltaic Power Plant

[+] Author and Article Information
Mansour Selseleh Jonban

Department of Mechatronics,
College of Engineering,
Ahar Branch,
Islamic Azad University,
Ahar, Iran
e-mail: m-selselehjonban@iau-ahar.ac.ir

Adel Akbarimajd

Electrical Engineering Department,
Faculty of Engineering,
University of Mohaghegh Ardabili,
Ardabil, Iran
e-mail: akbarimajd@uma.ac.ir

Javad Javidan

Electrical Engineering Department,
Faculty of Engineering,
University of Mohaghegh Ardabili,
Ardabil, Iran
e-mail: javidan@uma.ac.ir

Contributed by the Solar Energy Division of ASME for publication in the JOURNAL OF SOLAR ENERGY ENGINEERING: Including Wind Energy and Building Energy Conservation. Manuscript received December 22, 2013; final manuscript received June 10, 2014; published online July 29, 2014. Assoc. Editor: Santiago Silvestre.

J. Sol. Energy Eng 137(1), 011004 (Jul 29, 2014) (11 pages) Paper No: SOL-13-1374; doi: 10.1115/1.4027931 History: Received December 22, 2013; Revised June 10, 2014

Increasing of renewable power plants has raised the need for intelligent energy management systems (EMSs). The aim of management system is to reduce energy absorbed from fossil sources. In this paper a layered behavioral based architecture named subsumption is employed for energy management in PV based power plant with storage devices and active load. In the proposed architecture components of the plant including SC, PV, battery, and the grid are organized in different layers. Each layer is implemented as a behavioral rule that can independently perceive and act in the environment. There is a hierarchy in the layers where lower layers have more priority and can inhibit higher layers. The layers use a simple protocol to communicate with management unit. Using this approach, a simple, fast, extensible, and fault tolerant EMS is achieved.

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References

Figures

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Fig. 1

Vertical layering. (a) One pass control and (b) two pass control.

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Fig. 2

Horizontal layering

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Fig. 3

Diagram of the surveyed electrical system

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Fig. 4

Control structure of the converters

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Fig. 5

Canonical model of DC to DC converter

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Fig. 6

Regulator system small-signal block diagram

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Fig. 7

Brooks's subsumption architecture

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Fig. 8

System layering with subsumption architecture

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Fig. 9

The subsumption architecture for current sharing by the SC agent

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Fig. 10

The subsumption architecture for current sharing by the PV agent

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Fig. 11

The subsumption architecture for current sharing with the battery agent

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Fig. 12

The overall structure of system control. Dashed lines show communicating channels among agents. Dotted lines show commends sent by agent to devises.

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Fig. 13

Simulated model of the system. The presented subsumption architecture in Fig. 8 has been implemented in EMS box.

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Fig. 14

Results of the management system (variations of voltage and current of agents are shown)

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Fig. 15

Contribution of gents in voltage controlling task

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Fig. 16

Variations of the PV current during fault tolerance tests

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Fig. 17

Variations of the battery current during fault tolerance tests

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Fig. 18

Variations of the battery SOC during fault tolerance tests

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Fig. 19

Variations of grid current during fault tolerance tests

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Fig. 20

DC bus voltage during fault tolerance tests

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