An improved control method of battery energy storage system for hourly dispatch of photovoltaic power sources

Muhamad Zalani Daud, Azah Mohamed, Hannan M A

Research output: Contribution to journalArticle

80 Citations (Scopus)

Abstract

The effects of intermittent cloud and changes in temperature cause a randomly fluctuated output of a photovoltaic (PV) system. To mitigate the PV system impacts particularly on a weak electricity network, battery energy storage (BES) system is an effective means to smooth out the power fluctuations. Consequently, the net power injected to the electricity grid by PV and BES (PV/BES) systems can be dispatched smoothly such as on an hourly basis. This paper presents an improved control strategy for a grid-connected hybrid PV/BES systems for mitigating PV farm output power fluctuations. A feedback controller for BES state of charge is proposed, where the control parameters are optimized using genetic algorithm (GA). GA-based multi objective optimization utilizes the daily average PV farm output power profile which was obtained from simulation using the historical PV system input data of Malaysia. In this way, the optimal size for the BES is also determined to hourly dispatch a 1.2 MW PV farm. A case study for Malaysia is carried out to evaluate the effectiveness of the proposed control scheme using PSCAD/EMTDC software package. Furthermore, the validation of results of the proposed controller and BES size on the actual PV system output data are also given. Finally, a simple payback calculation is presented to study the economical aspects of the BES investment on the proposed mitigation strategy under Malaysian Feed-in Tariff program.

Original languageEnglish
Pages (from-to)256-270
Number of pages15
JournalEnergy Conversion and Management
Volume73
DOIs
Publication statusPublished - 2013

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Energy storage
Farms
Electricity
Genetic algorithms
Controllers
Multiobjective optimization
Software packages
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Keywords

  • Battery energy storage
  • feedback control
  • Parameter optimization
  • Photovoltaic
  • Renewable energy hourly dispatch
  • SOC

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Fuel Technology
  • Nuclear Energy and Engineering
  • Renewable Energy, Sustainability and the Environment

Cite this

An improved control method of battery energy storage system for hourly dispatch of photovoltaic power sources. / Daud, Muhamad Zalani; Mohamed, Azah; M A, Hannan.

In: Energy Conversion and Management, Vol. 73, 2013, p. 256-270.

Research output: Contribution to journalArticle

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