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Effective power balancing and power quality enhancement in single-phase microgrid for remote areas with water pumping, battery storage and electronic load controller

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Abstract

Power sharing between distributed energy resources (DERs) is being a significant challenge in the stand-alone microgrid system as it must be ensured to supply good power quality supply for end-users. Due to the variable power generation, particularly from solar and wind energy resources, the energy storage systems are essential to store the excess energy and supply the energy during an emergency in the absence of a grid connection. This option ensures optimal energy management and therefore improves the reliability of the system. But at the same time, the maintenance, life span and cost are the drawbacks of battery systems, and therefore, some researchers are working on minimizing dependency of battery by storing energy in other different forms. In this paper, the following three alternative energy routes are proposed to utilize the excess energy for (a) water pumping system, (b) battery storage system and (c) dump load. Based on the variation of end-user consumption, the above three options are used to attain power balancing in the microgrid. In this study, the direct on line starter, DC–DC converter and electronic load controller control the water pumping, battery storage and dump load, respectively. To enhance the power quality, a modified RMS voltage-based droop controller is presented for operating two DER fed parallel inverters, as it assures stable operation and exhibits the following desired characteristics: (1) accurate real and reactive power sharing, and (2) voltage and frequency regulation. Furthermore, the stability analysis is carried out on the proposed system to test the effectiveness.

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Abbreviations

DER:

Distributed energy resource

ESS:

Energy storage systems

DOL:

Direct on line

ELC:

Electronic load controller

DC:

Direct current

DG:

Distributed generation

CC:

Centralized controller

IIDG:

Inverter interfaced distributed generation

DCC:

Decentralized controllers

SHM:

Stand-alone hybrid microgrid

BESS:

Battery energy storage systems

PWM:

Pulse width modulation

RMS:

Root means square

SOC:

State of charge

VSI:

Voltage source inverters

SL:

Static load

IGBT:

Insulated-gate bipolar transistor

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Authors and Affiliations

  1. Department of Electrical Engineering, School of Engineering, Central University of Karnataka, Kalaburagi, Karnataka, 585367, India

    Sudheer Peddeeti & Sandeep Vuddanti

  2. Department of Electrical Engineering, National Institute of Technology (NIT), Tadepalligudem, Andhra Pradesh, 534101, India

    Sandeep Vuddanti

  3. Department of Electronic Communication Engineering, Indian Institute of Information Technology, Design and Manufacturing (IIITDM), Kancheepuram, Chennai, Tamil Nadu, 600127, India

    B. Chitti Babu

Authors
  1. Sudheer Peddeeti
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  2. Sandeep Vuddanti
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  3. B. Chitti Babu
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Correspondence to Sandeep Vuddanti.

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Peddeeti, S., Vuddanti, S. & Babu, B.C. Effective power balancing and power quality enhancement in single-phase microgrid for remote areas with water pumping, battery storage and electronic load controller. Electr Eng 104, 83–96 (2022). https://doi.org/10.1007/s00202-021-01377-4

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  • DOI: https://doi.org/10.1007/s00202-021-01377-4

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