IMPROVED HIERARCHICAL MULTI-LOOP VOLTAGE CONTROL BASED ON DROOP CONTROL FOR INVERTERBASED DG UNITS IN AN ISLANDED MICROGRID

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HOSSEINI KORDKHEILI HADI; BANEJAD MAHDI; Akbarzadeh Kalat Ali

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Journal: COMPUTATIONAL INTELLIGENCE IN ELECTRICAL ENGINEERING (INTELLIGENT SYSTEMS IN ELECTRICAL ENGINEERING) Year:2018 | Volume:8 | Issue:4 Page(s): 45-61

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Title

IMPROVED HIERARCHICAL MULTI-LOOP VOLTAGE CONTROL BASED ON DROOP CONTROL FOR INVERTERBASED DG UNITS IN AN ISLANDED MICROGRID

Author(s)

HOSSEINI KORDKHEILI HADI | BANEJAD MAHDI | Akbarzadeh Kalat Ali | Issue Writer Certificate

Keywords

MICROGRIDQ1

PRIMARY CONTROLQ1

INNER CONTROL LOOPSQ1

DROOP CONTROLQ2

HIERARCHICAL CONTROLQ1

CAPACITY CURVESQ1

Abstract

In this paper, a multi-loop HIERARCHICAL CONTROLler for a renewable DG based MICROGRID system is proposed in order to control the voltage of point of common coupling and also to perform accurate active and reactive power sharing. Inner current and voltage loops that are designed based on the dynamic model of MICROGRID system are used to obtain appropriate switching functions for interfaced inverters and the reference values for currents of DG units. Also, a modified DROOP CONTROLler is introduced to enhance the performance of designed voltage control loop. In order to improve the dynamic operation of the proposed controller in supplying demanded power for harmonically distorted loads, the extraction of harmonic components of PCC voltages is accomplished. Upper and lower limits of voltage amplitude and frequency droops are analyzed using CAPACITY CURVES of each DG unit. The effect of renewable power generation uncertainty on DC link voltage variations are also compensated using an additional control loop in hierarchical structure. The main contributions of this paper are the above-mentioned multi-objective control system along with a DROOP CONTROL based on CAPACITY CURVES. The MATLAB/SIMULINK simulation shows a proper steady state and transient performance during changes in generation and nonlinear harmonically distorted loads.

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APA: Copy

HOSSEINI KORDKHEILI, HADI, BANEJAD, MAHDI, & Akbarzadeh Kalat, Ali. (2018). IMPROVED HIERARCHICAL MULTI-LOOP VOLTAGE CONTROL BASED ON DROOP CONTROL FOR INVERTERBASED DG UNITS IN AN ISLANDED MICROGRID. COMPUTATIONAL INTELLIGENCE IN ELECTRICAL ENGINEERING (INTELLIGENT SYSTEMS IN ELECTRICAL ENGINEERING), 8(4 ), 45-61. SID. https://sid.ir/paper/203090/en

Vancouver: Copy

HOSSEINI KORDKHEILI HADI, BANEJAD MAHDI, Akbarzadeh Kalat Ali. IMPROVED HIERARCHICAL MULTI-LOOP VOLTAGE CONTROL BASED ON DROOP CONTROL FOR INVERTERBASED DG UNITS IN AN ISLANDED MICROGRID. COMPUTATIONAL INTELLIGENCE IN ELECTRICAL ENGINEERING (INTELLIGENT SYSTEMS IN ELECTRICAL ENGINEERING)[Internet]. 2018;8(4 ):45-61. Available from: https://sid.ir/paper/203090/en

IEEE: Copy

HADI HOSSEINI KORDKHEILI, MAHDI BANEJAD, and Ali Akbarzadeh Kalat, “IMPROVED HIERARCHICAL MULTI-LOOP VOLTAGE CONTROL BASED ON DROOP CONTROL FOR INVERTERBASED DG UNITS IN AN ISLANDED MICROGRID,” COMPUTATIONAL INTELLIGENCE IN ELECTRICAL ENGINEERING (INTELLIGENT SYSTEMS IN ELECTRICAL ENGINEERING), vol. 8, no. 4 , pp. 45–61, 2018, [Online]. Available: https://sid.ir/paper/203090/en

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