Farhad Shahnia

Farhad Shahnia
Murdoch University · Engineering and Energy

Bachelor, Master, PhD

About

204
Publications
44,835
Reads
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3,057
Citations
Citations since 2016
134 Research Items
2626 Citations
20162017201820192020202120220100200300400500
20162017201820192020202120220100200300400500
20162017201820192020202120220100200300400500
20162017201820192020202120220100200300400500
Additional affiliations
December 2015 - present
Murdoch University
Position
  • Professor (Associate)
February 2012 - December 2015
Curtin University
Position
  • Lecturer
September 2008 - December 2011
Queensland University of Technology
Position
  • Researcher
Education
September 2008 - December 2011
Queensland University of Technology
Field of study
  • Electrical Engineering

Publications

Publications (204)
Article
Full-text available
Historically, minimum system demand has usually occurred overnight. However, in recent years, the increased penetration of rooftop photovoltaic systems (RPVs) has caused an even lower demand at midday, forcing some of the conventional generators to shut down only hours before the evening peak demand period. This further complicates the job of power...
Article
Full-text available
A standalone microgrid (MG) may frequently experience overloading owing to insufficient power generation or excessive renewable-based generation, which can cause unacceptable voltage and frequency deviations. Such problems are conventionally alleviated by load-shedding or renewable curtailment. Alternatively, autonomously operating MGs can be provi...
Article
Full-text available
The two common mechanisms of load-shedding and renewable curtailment can prevent provisional overloading and excessive generation and the subsequent unacceptable voltage and frequency deviation in standalone microgrids (MGs), which makes MGs less resilient and reliable. However, instead of enabling load-shedding or renewable curtailment, such overl...
Article
This paper proposes a novel reactive power-based control strategy for single-phase PV inverters (PVIs) to simultaneously improve voltage unbalance (VU) and voltage regulation (VR) in low-voltage distribution networks. The proposed strategy relies on communication links between neighboring PVIs to exchange limited data. To this end, it is based on t...
Article
Full-text available
The conventional volt-watt control method used in PV inverters to overcome the over-voltage problems can result in significant unfairness in the curtailed active power in PV-rich distribution networks. In this paper, a novel decentralized control strategy is presented to improve fairness in the curtailed active power of inverters. In this strategy,...
Article
Full-text available
Microgrids (MGs) are promising approaches to proliferate distributed energy resources for electrification in remote areas. However, to deal with the uncertainties of renewables and energy demand, special measures are required. Energy storages, controllable loads and reconfigurable networks are some of those measures that improve MGs’ flexibility. A...
Article
Full-text available
Overloading and renewable‐based excessive generation are a frequently observed phenomena in an autonomously operating islanded microgrid (MG) which will lead to unacceptable voltage or frequency deviation in the MG. Such problems can be alleviated by mechanisms such as load shedding or curtailment of renewable sources. Alternatively, coupling the n...
Article
The return on investment for a microgrid can be accelerated if the microgrid can maximize its profits, either by minimizing the cost of energy production or maximizing the revenue from selling electricity to the microgrid customers. This can be achieved by implementing demand response. Under a demand response program, microgrid loads can be re-sche...
Article
Full-text available
Several neighbouring microgrids (MGs) can be coupled to each other to increase their reliability and resiliency, as well as flexibility in their operation. A dc power exchange link can bring several benefits including their isolation among each other, which will enable power exchange amongst MGs with various operating conditions and standards. This...
Article
italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">- The placement of battery energy storage system (BESS) determines whether its capabilities can be effectively exploited. However, existing BESS placement studies are commonly based on a balanced network model while practical distribution networks are...
Chapter
The rising electricity demand and the inevitability of reliability improvement and cost reduction are motivating the application of distributed energy resources (DERs) within distribution networks instead of expanding them. The term microgrid refers to a small-scale electricity generation and distribution system in which a cluster of loads is suppl...
Article
Full-text available
Deployment of distributed energy resources has rapidly increased during the last few years. The uptake of renewable energy and especially photovoltaic (PV) systems are of interest to utilities in remote and rural areas where the use of conventional power generation is costly. Investigating the effects of such PV systems on isolated power systems at...
Article
Full-text available
The penetration of photovoltaic systems (PVs) to existing power grids is increasing as they are considered attractive options for electricity generation in distribution networks. This paper focuses on estimating the total power generated by a group of neighbouring PVs, spread over a distribution network using a single pyranometer for measuring the...
Article
Full-text available
The operation of a standalone microgrid is often optimised by the central controller that decides the set-points of the local controllers of the distributed generators. However, the optimised set-points may not remain optimal for a longer period due to the variability of loads and renewable generations. This study proposes a technique for readjusti...
Conference Paper
Full-text available
An autonomous microgrid (MG) may observe overloading and renewable-based excessive generation. Such issues can lead to unacceptable deviation in the MG's voltage or frequency. These problems can be eased by load-shedding or renewable curtailment. On the other hand, forming provisional neighboring MG clusters and facilitating power exchange among th...
Article
Short-term irradiance variability because of the passing clouds of unknown size, direction, and speed is a key issue for power grid planners because of the unexpected fluctuation in the generated power of photovoltaic (PV) systems. In order to handle this issue, several models have been presented in the literature to estimate the variability of the...
Article
Full-text available
In this paper, a novel fast nonsingular terminal sliding mode (FNTSM) control strategy using extreme learning machine (ELM) is proposed for permanent-magnet linear motor systems. It is shown that the developed FNTSM controller is composed of an equivalent control via ELM technique, a compensation control and a reaching control. Distinguished from t...
Article
Full-text available
The concept of community solar projects (CSPs) implies immense technical and economic incentives, but has not been widely adopted because of the investment risks. In this context, solar leasing can be very attractive and can lead to significant uptakes of residential rooftop photovoltaic (RPV) systems. This paper proposes solar leasing as an option...
Article
Full-text available
The global market share of electric vehicles (EVs) is on the rise, resulting in a rapid increase in their charging demand in both spatial and temporal domains. A remedy to shift the extra charging loads at peak hours to off-peak hours, caused by charging EVs at public charging stations, is an online pricing strategy. This paper presents a novel com...
Preprint
Full-text available
Battery energy storage systems can be integrated with photovoltaic (PV)-diesel microgrids, as an enabling technology to increase the penetration of PV systems and aid microgrid stability by smoothing out the power fluctuations of the PV systems. The aim of this paper is to derive correlations between the optimal capacity of the smoothing batteries...
Article
Full-text available
Autonomous microgrids (MGs) are being installed in large remote areas to supply power where access to the utility grid is unavailable or infeasible. The power generation of such standalone MGs is largely dominated by renewable based energy sources where overloading or power deficiencies can be common due to the high intermittency and uncertainty in...
Article
Full-text available
The short-term variability of photovoltaic (PV) system-generated power due to ambient conditions, such as passing clouds, represents a key challenge for network planners and operators. Such variability can be reduced using a geographical smoothing technique based on installing multiple PV systems over certain locations at distances of meters to kil...
Book
This book highlights various applications of renewable energy systems and their enabling technologies in electrical power systems. It features selected articles from the 9th International Conference on Power and Energy Systems (ICPES 2019), held in Perth, Australia, which presented the latest advances in the field and provided a platform to exchang...
Article
This paper has focused on transactive energy management in local energy communities and proposes a coalitional game model which considers the presence and utilization of flexible loads and the uncertainties in renewable energy sources. The superadditivi-ty and balancedness of the proposed game model have been proved rigorously by demonstrating that...
Article
Self-governing microgrids may consist of several con-ventional synchronous generators, converter-based distributed resources, and energy storages. In this paper, an eigenvalue-ori-ented stability assessment method is established to study the small signal stability of such systems that have complex dynamic char-acteristics. A new index referred to a...
Article
Full-text available
This paper proposes a market model for the purpose of optimisation of clustered but sparse microgrids (MGs). The MGs are connected with the market by distribution networks for the sake of energy balance and to overcome emergency situations. The developed market structure enables the integration of virtual power plants (VPPs) in energy requirement o...
Article
A major operational challenge of photovoltaic (PV) systems is the variability in their output power, which is mainly caused by the movements of clouds. This variability can be reduced through building several smaller PV systems, distributed within an area, rather than a single, large PV system, often referred to as the geographic smoothing. This sm...
Article
Full-text available
Standalone hybrid remote area power systems, also known as microgrids (MGs), can provide reasonably priced electricity in geographically isolated and the edge of grid locations for their operators. To achieve the reliable operation of MGs, whilst consuming minimal fossil fuels and maximising the penetration of renewables, the voltage and frequency...
Article
Full-text available
Balancing the generated and consumed power in a microgrid is highly affected by the varying output power of the intermittent, renewable energy-based, distributed energy resources. This paper focuses on coordinating the output power among the energy resources within a microgrid while managing the consumed power at the demand side. The considered mic...
Article
Full-text available
Contribution: This paper introduces the real-world limitations and non-technical aspects of power electronics (PEs) projects to students through innovative tutorial activities.
Article
Full-text available
Remote and regional areas are usually supplied by isolated and self-sufficient electricity systems, which are called as microgrids (MGs). To reduce the overall cost of electricity production, MGs rely on non-dispatchable renewable sources. Emergencies such as overloading or excessive generation by renewable sources can result in a substantial volta...
Article
Full-text available
A flat rate feed-in tariff (FiT) is a traditional incentive offered by many utilities around the world to encourage their customers to invest in electricity generation from renewable sources such as rooftop photovoltaic systems (RPVs). It is designed by financial techniques that mostly consider the initial capital cost and electricity spot price. H...
Article
Full-text available
Weak power distribution systems are those that are highly sensitive to fluctuations in voltage magnitude and/or frequency. Due to the intrinsic intermittency and inertia-less nature of photovoltaic systems, the connection of a utility-scale photovoltaic plant to a weak distribution system can lead to grid instability or even collapse. This paper pr...
Article
Full-text available
This paper is motivated by the crisis of freshwater in remote areas around the world and responds to the growing need for sustainable food production in arid lands. It focuses on utilizing solar energy to yield freshwater from the sea or brackish water with less environmental impacts, for greenhouses, which can produce sustainable food all over the...
Article
Full-text available
This paper proposes a management technique which will retain the voltage and frequency of standalone microgrids (MGs), within a predefined safe zone, at least cost, using a multi-layer scheme. The proposed technique considers the sustainability and dynamic supply adequacy aspects, of the MG, whilst considering the operational costs which accrue dur...