Mahmood Joorabian

• Doctor of Philosophy
• Professor at Shahid Chamran University of Ahvaz

The mismatch between production and consumption and concern for providing the energy needed in the power grid has always been one of the problems of grid operators. Also, large-scale electricity production has always been a costly and polluting industry. Therefore, engineers and power generation companies have always been looking for a cheap and cl...

One of the biggest and most important reasons for the removal fossil cars from the global car markets is their pollution, which has caused air pollution. But the use of electric cars does not have these many problems and has led to the increasing popularity of electric cars. In most of the articles, the charging rate is considered continuous, while...

An obstacle in managing economic dispatch is the integration of diverse factors such as pollution and heat. By introducing the price penalty coefficient, this class of two-objective problems is transformable to a single-objective form. The formulation considers various practical constraints of the system, including non-smooth cost functions, the ba...

Renewable energy technologies rely primarily on solar and wind. In Iran, due to the existing potential, the development of using photovoltaic panels and wind turbines is being planned and implemented. One of the important and influential factors in the feasibility and determination of the structure and dimensions of renewable-based smart microgrids...

The utilization of distributed generation (DG) in today's power systems has led to the emergence of the concept of microgrids, in addition to changing the mode of generating and supplying the energy required for network electrical loads. When a microgrid operates in the island mode, energy generation sources are responsible for controlling the micr...

This paper presents an innovative univariate Deep LSTM-based Stacked Autoencoder (DLSTM-SAE) model for short-term load forecasting, equipped with a Multi-Stage Attention Mechanism (MSAM), including an input AM and several temporal AM in the pre-training phase. The input AM is used to capture the high-impact load sequence time steps of univariate in...

This study develops a comprehensive model for enhancing the resilience of integrated electricity and natural gas networks in the presence of industrial, commercial and residential hubs. Distribution system hardening is used as a long-term plan to improve system resilience, while a bi-level operation model is proposed to enhance real-time resilience...

This paper presents the flexible-reliable operation (FRO) of microgrids (MGs) constrained to supplying clean energy. The scheme minimizes the total expected costs of the MG and sources operation, MG reliability, and MG flexibility and is subject to power flow equations, operation, environmental, and reliability constraints, and formulation of sourc...

This paper presents a two-layer framework for improving the resilience of a 118-bus active distribution network consisting of four microgrids, which includes hybrid storage systems, electric buses (EBs), and the direct load control (DLC) program. In the proposed model, the uncertainties of RESs generation, demand, and EBs’ mobility are considered,...

This paper presents a fault detection and faulty area identification algorithm in double-circuit transmission lines (DCTLs) compensated by the generalized unified power flow controller (GUPFC) for the first time. The topology of the GUPFC-compensated DCTL is threatened by three types of faults: single-circuit faults, inter-circuit faults, and groun...

With the emergence of smart grids, accurate very short-term load forecasting (VSTLF) has become a crucial tool for competitive energy markets. The number of behind-the-meter photovoltaic solar panels, which usually are not monitored are increasing. This could reduce the load visibility and also affects the VSTLF accuracy. While most of the research...

This paper provides a bi-level framework for resilience enhancement of electricity-gas-heating networks integrated with energy hubs by considering fast-acting flexible loads, electric vehicles (EVs), power-to-gas (P2G) technologies, and gas storage (GS) systems. In this study, a scenario-based method is utilized to model the uncertainties of load,...

This paper proposes an adaptive characteristic for eliminating the adverse effects of fault resistance and static synchronous compensator (STATCOM) on the performance of distance relays in transmission line and collector lines of doubly-fed induction generator (DFIG)-based wind farms in the case of single-phase-to-ground resistive faults. The propo...

Electric vehicle charging is one of the common techniques for techno-economic energy management in the distribution system, which, if implemented properly, brings several benefits such as the peak load shaving, total costs reduction, losses minimization, etc. Unlike traditional charging methods, it is not necessary to completely charge electric veh...

The connection of large industrial microgrids to three-terminal transmission lines greatly complicates the protection scheme of the lines due to the uncertainty in generating renewable energy sources, the probability of unintentional islanding, the abrupt switching of sensitive and critical loads, the influence of supply and demand management progr...

This paper presents an accurate fault location algorithm for double-circuit grounded cross-country (DCGCC) faults in double-circuit transmission lines (DCTLs) compensated by a generalized unified power flow controller (GUPFC). The algorithm incorporates synchronous current and voltage phasors at both end buses of the line. The proposed algorithm de...

This study presents a new optimal supplementary neuro-controller design for unified power flow controllers (UPFCs) using wide-area signals. The new design is oriented by the dual heuristic programming (DHP) method, which is a powerful adaptive critic procedure. The proposed controller injects additional signals to the UPFC series inverter to enhanc...

Fault location in transmission lines compensated by flexible alternating current transmission system (FACTS) devices and series capacitor (SC) compensators is much more complicated than simple lines due to the presence of time-variant voltage and current sources in the topology of transmission lines. In recent years, due to the increasing presence...

An accurate inter‐circuit fault location algorithm for double‐circuit transmission lines compensated by a generalized unified power flow controller based on phasor analysis is presented. The proposed algorithm utilizes synchronous currents and voltages of the buses on both sides of the line to accurately calculate the fault location. Using the equa...

In this paper, a bi‐level power management strategy is presented for an active distribution network (ADN) in the presence of virtual power plant (VPP). In the proposed strategy, VPP contains renewable energy source (RES), energy storage system (ESS) and electric vehicles (EVs) parking lot coordinated with VPP operator (VPPO), and there is a coordin...

Network reconfiguration (NR) has undergone new changes to adapt to smart grid evolution. Internet of things (IoT) has found its way to smart grids especially in the distribution systems. Demand‐side management can be more efficient in the presence of IoT. IoT‐based energy management systems can have bidirectional communication with smart grids and...

Improving the accuracy of solar power forecasting has become crucial for dealing with the negative effects of the integration of continually increasing solar power into power systems. This is a more challenging task when historical solar radiation data has not been recorded and no specific sky imaging equipment is available. This paper proposes a u...

This article proposes a fault location algorithm for double-circuit transmission lines compensated by a generalized unified power flow controller (GUPFC) in the phasor analysis domain. The suggested algorithm is able to locate the fault point in three stages at each circuit of a double-circuit line equipped with a GUPFC between two terminals. The f...

The paper presents a fault area detection and classification algorithm in the phasor domain for double-circuit lines compensated by a generalized unified power flow controller (GUPFC). In the first step, by defining and using a voltage index, the algorithm determines the side of the GUPFC in which the fault has occurred. In the second step, by defi...

In this study, on the basis of a new agent‐based situational awareness platform, the amount of severity in closeness to voltage instability occurrence is determined. In the proposed platform (with the aid of the agents of the disturbance detection unit that are responsible for perception of environmental events and understanding the current situati...

The rapid growth and development of manufacturing technology for controlling processors and high-power semiconductor devices has led to the enhancement of flexible AC transmission system (FACTS) controllers, thus improving the performance of power systems. The generalized unified power flow controller (GUPFC) is today introduced as the most advance...

n this paper, a Decision Tree-based method of Loss of Excitation (LOE) Protection of Synchronous Generators in Presence of Unified Power Flow Controller (UPFC) is presented. The presence of UPFC causes the Berdy relay to be delayed in detecting LOE. In the proposed method, different variables are considered and in the various test and training patt...

Distance relays calculate the path impedance between the fault point and the relay location by sampling the voltage and current at the relay location. By using the ratio of the impedance estimated by the relay to the impedance of the line where the relay is installed, the location of the fault can be estimated by a distance relay. However, several...

Generalized Unified Power Flow Controller (GUPFC) is a member of the flexible alternating current transmission system (FACTS) devices family that operates based on voltage source converter (VSC) and is known as the most efficient FACTS device. GUPFC can control the voltage of one bus and the active and reactive power flows on at least two transmiss...

Deregulation of electric power market and aggregation of renewable resources raise the need for new hour-ahead load forecasting models. This paper proposes a new hybrid data-driven method for hour-ahead electrical load forecasting based on innovative features that represents the nonlinear and dynamic characteristics of electrical load. These featur...

In this study, a simple, fast, and adaptive network reduction procedure is presented for long‐term voltage stability analyses, to speed up the simulation time. The proposed procedure consists of two parts including disturbance detection based on data from synchronised measurement devices; and the rest, up to the final estimated values, based on sim...

Maintaining power balance under both normal and emergency conditions is one of the most important challenges in optimal scheduling of microgrids (MGs). In this paper, a multiple chance-constrained scheduling model is developed for optimal scheduling of microgrid considering the most important factors that affect the power balance of the MG such as...

In this study, the proposed algorithm is a help for utilities to find out when voltage instability will happen, as soon as they realise that a disturbance may/will result in voltage instability. In this regard, the data gathered, on‐line, by a wide area monitoring system (WAMS) is supposed to be processed in an energy management system, where, fina...

This paper deals with a control design based on amplitude adaptive notch filter (AANF) for a four-leg distributed static compensator (DSTATCOM) in a three-phase four-wire distribution grid to overcome current-related problems of power quality. Extracted reference currents of DSTATCOM are obtained using AANF because of its simple structure, exact me...

The use of phase shifting transformer (PST) is one of the common methods of power flow control in complex transmission systems. Changing the power distribution in lines by the PST will change the voltage and the current signals of the power system. Loss of excitation relay in a synchronous generator is one of the important relays of the generator t...

This paper presents a new design of the hybrid AC/DC microgrid for optimization of the performance of the smart grid. This design by using the capacity of the DC microgrid and introducing a new unified power quality conditioner, named UPQC-DC, and providing appropriate control schemes for two back to back interface converter between the AC and DC m...

An ultra-high-speed, accurate and reliable algorithm is proposed in this study for the identification and faulted phases selection of inter-circuit faults. For this purpose, modal components of current samples just before they arrive to the relay location are extracted. Teager energy operator is used here for the extraction of current travelling wa...

In recent years, wind power has played a significant role in energy generation of micro-grids (MGs). However, randomness nature of wind speed leading to uncertainty in wind power forecast, imposes some problems such as overestimating wind power on optimized scheduling of MG. In this paper, we propose an adaptive probabilistic concept of confidence...

In this paper, a new fuzzy controller for a three-phase and three-wire distribution static compensator (DSTATCOM) is presented to improve power quality. A three-leg voltage source converter based DSTATCOM is used to control the harmonic currents for two nonlinear loads. In this control system, gate pulses for IGBT switches are provided by a hystere...

Considering the advantages of DC microgrids, the extension of the conventional AC distribution grid can be implemented using a DC microgrid. This justifies the realization of a hybrid AC/DC microgrid. In the present study, a new global solution is presented to improve the power quality and to fully compensate the reactive power of an AC microgrid u...

Renewable energy sources are widely known as an important option for microgrid design. This paper performs the optimal design and specify the dimensions, energy planning, and evaluate the performance of a microgrid to supply the electrical and thermal load using renewable energies. The hybrid system consists of PV, diesel generator and battery that...

STATCOM is one of the most significant devices in FACTS technology which is used in parallel compensation, enhancing the transient stability, limiting the low frequency oscillations and etc. designing a proper controller is effective in operation of STATCOM. In this paper a method is presented for the design of STATCOM and Power System Stabilizer (...

Finding out remained time to voltage instability occurrence is necessary to make a timely decision on corrective actions. This paper presents a novel method for discovering time to long term voltage instability. The method is based on virtually acceleration of OLTCs' operation during time domain simulation in order to realizing detection of long vo...

A traveling wave based algorithm for fault classification and faulted phases selection is presented in this paper. The proposed algorithm is composed of two major stages. In the first stage, after extraction of modal components from three phase signals and by means of Teager energy operator (TEO), traveling waves are extracted from modal signals. T...

This paper presents a four wire DSTATCOM (distribution static compensator) that is used for reactive power compensation along with, harmonics elimination neutral current compensation and load balancing. The proposed control approach is based on self-tuning filter (STF) instantaneous reactive power theory to generate reference currents. The function...

Due to the limited operations of three-phase machines in open-phase fault conditions, the multiphase induction generators are now introduced in high-performance power generation systems. In the case of six-phase induction generators, the operation with opened phases is associated with torque and consequently power oscillations even in steady state...

A new traveling-wave-based algorithm is proposed in this paper for the protection of transmission lines. In the proposed algorithm, Teager energy operator is used to extract traveling waves. Teager energy operator has a high computational efficiency and extracts traveling waves with high resolution. The amplitude of the first detected traveling wav...

This study proposes an intelligent traveling-wave (TW)-based protection algorithm for parallel transmission lines. In the proposed algorithm, Karenbauer's phase to modal transform is applied on three phase current signals. Teager energy operator is then applied on the modal components to extract TWs. First extracted TW of each modal component along...

This paper presents a new hybrid islanding detection approach for microgrids (MGs) with multiple connection points to smart grids (SGs) which is based on the probability of islanding (PoI) calculated at the SG side and sent to the central control for microgrid (CCMG). The PoI values are determined using a combination of passive, active, and communi...

In this paper, a new control strategy for dynamic voltage restorer (DVR) is presented to compensate effectively voltage sags. In this strategy, load and supply voltage magnitude and angle are estimated by least error square filters in short time. The advantage of this method is reducing noise, distortion, and harmonic on estimation parameters. Acco...

Based on differential algebraic (DA) subsystem models of power system components including the nonlinear controllers, which are called component structural complex models, this paper presents a model reduction method (MRM). For the dynamic differential equations, based on the property that the nonlinearity of the controller compensates that of the...

In this paper a novel control strategy presented to integration of Unified Power Quality Conditioner (UPQC) with Plug-in Hybrid Electric Vehicle (PHEV) for overcoming the voltage sag issues on wind farms where connected to the grid. The interaction between wind generators and grid cause increasing short circuit current level and instability problem...

Charging of plug-in-hybrid-electric vehicles (PHEVs) may adversely affect electric grid reliability because a large amount of additional electrical energy is required to charge the PHEVs. In this paper, a comprehensive method to evaluate the system reliability concerning the stochastic modeling of PHEVs, renewable resources, availability of devices...

This paper provides an algorithm of fault resistance compensation for digital ground distance relay considering the voltage and current transformer effects. Performance of the conventional ground distance relaying manner is adversely affected by different ground faults and also typical type, called a simultaneous open conductor and ground fault. Th...

In this paper, the effect of plug-in electric vehicles is studied on the smart distribution system with a standard IEEE 30-bus network. At first, harmonic power flow analysis is performed by Newton-Raphson method and by considering distorted substation voltage. Afterward, proper sizes of capacitors is selected by cuckoo optimization algorithm to re...

This study presents a new voltage control algorithm for multilevel inverters which are used to connect the distributed generation (DG) sources (like photovoltaic cells) to the network, which is called the voltage look-up table method (VLUTM). This method can build up an almost sinusoidal voltage at the inverter output with the least number of switc...

This study presents field oriented control of a squirrel cage six-phase induction generator (SC6PIG) when a phase fault is detected in order to minimize output power oscillations during phase opening. An unbalanced structure of squirrel cage six-phase induction machine (SC6PIM) has been modeled to analyze healthy and faulty conditions of the machin...

There are many types of distributed-generation (DG) sources that cannot be connected to the network directly and use an inverter-based interface. In harmonic compensators [like active power filters (APFs)], the coupling transformer disrupts the compensation capability, therefore the transformerless inverter schemes have grown up in recent years. A...

In this paper, synchronous reference frame theory controlling strategy is presented to generate reference current utilizing four-leg three-phase four-wire Distribution Static Compensator (DSTATCOM). An adaptive hysteresis band current controller is proposed to control the hysteresis bandwidth according to the modulation frequency, supply voltage, D...

SUMMARY The cuckoo search (CS) algorithm is a simple and effective global optimization algorithm. It has been successfully applied to solve a wide range of real- world optimization problem. In this paper, a modified CS algorithm is applied to determine the feasible optimal solution of the economic load dispatch problem considering various generator...

In this paper a three phase four wire Distribution Static Compensator (DSTATCOM) is proposed for power quality improvement. DSTATCOM is controlled to compensate reactive power, harmonic current, neutral current and unbalances in the load. The control algorithm extracts reference currents and generates gate pulses for IGBT switches by PWM technique....

Inverter based small scale power sources are widely used, which usually use a coupling transformer to connect to the network. In the transformerless inverters, this transformer replaces with a proper impedance. A new algorithm for controlling the multilevel cascaded transformerless inverters with non-equal DC rail voltages is proposed in this paper...

In this paper, a speed adaptive flux Luenberger observer is presented for sensorless control of a squirrel cage six phase induction machine (SC6PIM) in healthy and faulty condition. Model of an induction machine in unbalanced operating situation is presented and used to estimate the states of SC6PIM in fault condition by using Luenberger observer a...

In this paper, we solve the optimal power flow problem using by the new hybrid fuzzy particle swarm optimisation and Nelder-Mead (NM) algorithm (HFPSO-NM). The goal of combining the NM simplex method and the particle swarm optimisation (PSO) method is to integrate their advantages and avoid their disadvantages. The NM simplex method is a very effic...

Facts devices are increasingly being applied to increase the damping of the power system. Uncoordinated design of these devices with power system stabilizers (PSSs), however, may have a detriment effect on the system performance. This paper presents seeker optimization algorithm (SOA) to design the parameters of PSS and STATCOM coordinately to impr...

This paper addresses a novel method for the multi-objective economic load dispatch (ELD) problem. Power generation, spinning reserve costs and emission are considered in the objective function of the frequency ELD problem. The frequency deviation, minimum frequency limits and other practical constraints are also taken into account in this problem....

This paper presents, Cuckoo Search Algorithm (CSA) based Neuro Fuzzy Controller (NFC) to improve the performance of Unified Power Quality Conditioner (UPQC) for voltage sag mitigation in wind farms. CSA is used for optimizing the output of neural network so the classification output of the neural network is enhanced. CSA is an optimization algorith...

In an electricity market environment, market participants try to increase their profit. This attitude may lead to voltage instability and insecurity in operation of power systems. In this paper, unit commitment problem considering voltage stability is investigated. Benders decomposition is used to solve unit commitment problem. Some indices are use...

Industrial plants generally make use of large induction motors which are the heavy consumers of reactive power. These motors sometimes cause the reduction of power factor and make the plants use capacitor banks to improve the power factor. Switching on capacitor banks to a circuit generally causes the increase of the voltage in the feeding bus and...

In this paper the values of power system stabilizer converge to optimal response coordinately using differential evolutionary algorithm (DE) with small number of iterations and it is tuned in a way that inter-Area power system oscillations will be omitted. The case study is a three-area system which is simulated non-linearly in time domain using MA...

This paper addresses the application of a new strategy in pulse wide modulation (PWM) technique called inverted-sine PWM (ISPWM). This technique can be used to control voltage source converters (VSC) in the light HVDC transmission systems. In this strategy, the proposed switching technique uses a sinusoidal reference signal and an inverted-sine as...

This paper presents an effective technique for tracking and finding the direction of switched capacitor banks in distribution system that generate switching transient when certain number of power quality meters exist. This technique uses modal current and voltage signals that can be constructed by combining three-phase current and three-phase volta...

Negotiation is one of the most prevalent methods that agents, in a multi-agent system, use to reach agreements. Nowadays, one important aspect of negotiation is moral behaviors of agents that involve in negotiation. For this reason, we propose an ethical classifier that uses artificial neural networks ensembles. To evaluate the performance of the p...

One of the most challenging issues of transmission grids in restructured power networks is determining the real transmission service cost. In this paper, a method for calculating the transmission service in different grids is presented. In the proposed method, the cost of power loss and congestion of transmission services are considered. Using this...

Power electronic-based FACTS devices like Unified Power Quality Conditioner (UPQC) can fulfil multiple power quality control objectives such as needs of reactive power compensation, voltage flicker and harmonics current compensation. Although the main disadvantage of UPQCs are their excessive price. Therefore UPQCs are not widely used. In this pape...

The most probable fault in induction generator is stator winding inter-turn fault. In the proposed method, Extended Park's vector approach with the variance of the wavelet coefficients are used for detect of inter-turn fault. Also in this article Adaptive Neuro Fuzzy Inference System is used for estimation of the percentage of shorted turns in the...

Different types of generators are used in wind farms including Synchronous and Asynchronous generators and Double Fed Induction Generators (DFIG). In Synchronous generator case, a power electronic circuit called a cyclo-converter is used as an interface to connect the generator to network. This circuit uses a DC-AC inverter with controllable switch...

In large scale power systems, PSS is not sufficient to damp inter-area oscillations; therefore, FACTS devices, such as SVC, which is one of the most important these devices, are typically used with PSSs. In this paper, the parameters of a power system stabiliser (PSS) and static VAR compensator (SVC) with help of a combination of a Differential Evo...

Nowadays, the increased severity of power quality problems and other problems associated with the passive filters such as large size and weight, higher cost, fixed compensation, and resonance problems with loads and networks have required a focus on a power electronic solution, that is, active filters. At this article nonlinear Load Harmonics Effec...

One of the major operating challenges in the electricity markets is to manage transmission system congestion to ensure its secure operation. This paper has mainly addressed the issue of congestion management utilizing Thyristor Controlled Series Capacitor (TCSC). Proper location of a FACTS controller is key to maximize its benefits. This paper pres...

Any plan for modeling the components of transmission service costs should be able to consider congestion as well as loss cost. Assessing the real value of congestion and loss costs in each network has a substantial contribution to analyze the grid's weaknesses in order to release capacity of power network. As much as the amount of congestion and lo...

The aim of this paper is to make a novel method for calculating the investment cost of Transmission services. It should be noted that some considerations such as used capacity, profits of reliability and profits of decreasing congestion-the money allocated to transmission services- are also taken into account. The proposed method is tested on an 8...

In this paper, Evolution Strategies (ES) is used to find optimal placement of FACTS devices in power systems. The goal of optimization is to maximize the system loadability. Optimization is based on finding locations and settings of FACTS devices. Simulations are implemented on IEEE 30-bus test system. From different types of FACTS devices, SVC, TC...

Artificial neural networks may probably be the single most successful technology in the last two decades which has been widely used in a large variety of applications. The purpose of this book is to provide recent advances of artificial neural networks in industrial and control engineering applications. The book begins with a review of applications...

This paper deals with design of a synchronous frame control strategy for single-phase inverter-based islanded distributed generation (DG) systems. Although, implementation of these regulators requires a minimum of two independent phases in the system, the required orthogonal phase is generated through the use of a first order all pass filter (APF)....

Most of the losses in a power system relate to the distribution sector which always has been considered. From the important factors which contribute to increase losses in the distribution system is the existence of radioactive flows. The most common way to compensate the radioactive power in the system is the power to use parallel capacitors. In ad...

This paper undertakes the problem of optimal capacitor placement in a distribution system. The problem is how to optimally determine the locations to install capacitors, the types and sizes of capacitors to he installed and, during each load level,the control settings of these capacitors in order that a desired objective function is minimized while...