Search results for: Mohammad A.S. Masoum
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Electric Power Systems Research > 2016 > 141 > C > 407-420
Participation of plug-in electric vehicles (PEVs) is expected to grow in emerging smart grids. A strategy to overcome potential grid overloading caused by large penetrations of PEVs is to optimize their battery charge-rates to fully explore grid capacity and maximize the customer satisfaction for all PEV owners. This paper proposes an online dynamically optimized algorithm for optimal variable charge-rate...
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Journal of Power Sources > 2016 > 330 > C > 7-17
Optimal coordinated charging of plugged-in electric vehicles (PEVs) in smart grid (SG) can be beneficial for both consumers and utilities. This paper proposes a hybrid optimal online followed by overnight charging coordination of high and low priority PEVs using discrete particle swarm optimization (DPSO) that considers the benefits of both consumers and electric utilities. Objective functions are...
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The increasing penetration of renewable power generations such as PV power plants in distribution systems is creating serious voltage quality problems such as voltage fluctuations, voltage imbalance and voltage instability. These issues can be solved by injecting reactive power to the grid. Reactive power control of transmission lines through the static synchronous compensator (STATCOM) has gained...
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Power quality is an important issue when integrating renewable distributed generations and power electronic devices in distribution systems. Possible issues are unacceptable voltage fluctuation and harmonic current injections that may result in unstable and unreliable power networks. Voltage profile can be improved by compensating reactive power using flexible AC transmission systems (FACTSs) such...
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International Journal of Electrical Power & Energy Systems > 2016 > 74 > C > 172-186
Distributed generations (DGs) are predicted to perform an increasing role in the future power system. Expose of DGs can change the fault current during a grid disturbance and disturb the existing distribution system protection. Solid-state fault current limiters (SSFCLs) can provide a quick system protection during severe faults and are expected to advance the reliability and stability of the power...
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Electric Power Systems Research > 2015 > 128 > Complete > 19-29
The main impact of uncoordinated plug-in electric vehicle (PEV) charging is adding new time-variant loads that can increase the strains on the generation units, transmission and distribution systems that may result in unacceptable voltage drops and poor power quality. This paper proposes two dynamic online approaches for coordination of PEV charging based on fuzzy genetic algorithm (FGA) and fuzzy...
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Applications of hybrid electric vehicles (HEVs) and plug-in electric vehicles (PEVs) in modern power grids are increasing due to the growing concerns about environmental issues and unpredictable fuel prices. However, detailed information on drivers' behaviors which is required for vehicle control and management is not widely available. This paper presents a map-based linear estimation approach to...
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A Hysteresis current control (HCC) modulation is commonly used because of its various advantages. However, the HCC modulation has the disadvantage that the modulation frequency varies in a fixed band and, consequently, produces non-optimum current ripples. To overcome this drawback, an adaptive hysteresis-band current control (AHCC) modulation has been suggested. However, when the AHCC is employed...
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The Hysteresis current control (HCC) is a popular modulation technique used in active power filter (APF) applications owing to its simplicity of implementation, fast current response and peak current limiting capability. Despite these advantages, it has a major disadvantage when applied to three-phase isolated neutral point (INP) systems: interphases dependency causes very high-switching frequencies...
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ISA Transactions > 2015 > 56 > Complete > 222-240
In this paper, an adaptive configuration for PID type fuzzy logic controller (FLC) is proposed to improve the performances of both conventional PID (C-PID) controller and conventional PID type FLC (C-PID-FLC). The proposed configuration is called adaptive because its output scaling factors (SFs) are dynamically tuned while the controller is functioning. The initial values of SFs are calculated based...
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Frequency regulation is one of the main issues in power grids. Any load-generation imbalance that occurs in a power network, causes the frequency to deviate from its nominal value. During such transient conditions it is important to use a method to decrease frequency fluctuations and recover the power quality to network normal condition as quickly as possible. There are several solutions for frequency...
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Electric Power Systems Research > 2014 > 116 > C > 147-157
This paper presents an innovative management strategy for distributed battery storages that greatly increases the capability of distribution networks to absorb and utilize photovoltaic (PV) generation. Optimal daily energy profiles for each storage unit are calculated using a Fourier series description based on one day ahead energy forecasts. Each battery charge/discharge profile is optimized to minimize...
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The rapid expansion of consumer-driven installations of residential photovoltaic (PV) systems causes serious power quality issues, e.g. notable voltage variations and unbalance, which not only detrimentally affects security and stability of distribution network operation, but also limits the number and capacity of further PV connections. Based on both reactive power management and real power curtailment...
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The future home energy management system (HEMS) in smart grid will need to include contractual grid regulations imposed by the utility while also taking into consideration the domestic users' comfort, preferences, budget, and security. The emerging autonomous demand response (ADR) programs have initiated steps in utilizing sophisticated software algorithms for the scheduling and optimization of HEMS...
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Active power filters (APFs) are widely accepted power electronic devices for compensating harmonic currents produced by nonlinear loads. The conventional technology used for APFs is a proportional-plus-integral (PI) controller. However, both the conventional approaches for determining the PI coefficients and also its structure may not provide satisfactory results under transient operating conditions...
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This paper investigates the performance of a recently proposed on-line transformer winding short circuit fault detection approach through detailed nonlinear three-dimensional finite element modelling of windings, magnetic core and transformer tank. The technique considers correlation of instantaneous input and output voltage difference Δ V=(v1(t)-v2(t)) and instantaneous input current I=i(t) at the...
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Utilities are becoming concern about the increasing number of solar panels feeding unstable power into generator-based mini-grids particularly in rural locations. When the mini-grid experiences large changes in the injection of solar power, for example on cloudy days, the generators have to work hard to keep up. This paper recommends inclusion of battery storage (BS) solar smoother across terminals...
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Plug-in electric vehicles (PEVs) and wind distributed generations (WDGs) will represent key technologies in the future smart grid configurations. PEV charging at high penetration levels requires substantial grid energy that can be partially supplied by WDGs. This paper examines the impacts of WDGs on performance of recently implemented online maximum sensitivities selection based coordination algorithm...
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Current grid codes request the wind turbines (WTs) to have a decent level of fault ride through (FRT) capability and also participate in recovering the network stability following contingencies. Modern WTs are mostly equipped with power converters that allow them to control the output power under various operating conditions. However, there are some Fixed Speed Induction Generators (FSIGs) still operating...
