Ali Parizad

Ali Parizad
Virginia Polytechnic Institute and State University | VT · Virginia Tech Advanced Research Institute (VT-ARI)

Postdoctoral Associate at Virginia Tech Advanced Research Institute

About

51
Publications
37,692
Reads
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545
Citations
Introduction
Ph.D. in electrical engineering with a focus on new challenges in modern power systems and smart grids. Broad theoretical background and applicable skills in power system modeling and analysis, load forecasting, wind, and solar systems. Extensive experience in SCADA systems, real-time simulators. Currently, I am working on Load forecasting based on PJM/MISO data applying Machine/Deep Learning algorithms and working on Cyber-Security and False Data Detection methods in the power system.
Additional affiliations
August 2019 - present
Southern Illinois University Carbondale
Position
  • Research Assistant
Description
  • • Hyper Parameter Optimization of Deep Learning Algorithms for High‑Resolution Load Forecasting by Parallel Distributed Programming • Cybersecurity Issues and Attack Classification in Power Systems • False data detection methods employing Machine/Deep Learning Algorithms • Investigation of a Laboratory Set‑Up for Cyber Attack Simulation • Big Data Analytics
January 2018 - January 2020
Southern Illinois University Carbondale
Position
  • Research Assistant
Description
  • DEVELOPiNG A DEDiCATED SOFTWARE FOR AMEREN ELECTRiC COMPANY WiTH FOCUS ON: • Optimal sitting and sizing of DERs in the distribution system using Optimization Algorithm considering stability/security indices, power losses, and total cost. • Improving electric distribution network operation through the inclusion of Energy Management concepts focused on high penetration of DER assets, renewable resource (Wind/PV) forecasting, proper charging/discharging of Energy Storage battery systems, and
April 2012 - August 2016
MAPNA Electric & Control Engineering & Manufacturing
Position
  • Head of Department
Description
  • • Design and Implementation of Power System Simulator and Emulator (PSE). • Power Plant Modeling in MATLAB (Generator, Excitation System, Turbine‑governor, Transformer, Transmission Line, Loads, etc.). • Communication between MATLAB Models in Simulink and LabVIEW software. • Implementation of hardware in the Loop by considering the excitation system as a real system (closed‑loop).

Publications

Publications (51)
Article
Full-text available
The paper presents a novel computationally efficient Quasi-Static-Time-Series (QSTS) approach for the sizing and sitting of photovoltaic arrays in a distribution network, which uses historical hourly demand and irradiance data. Additionally, the proposed approach combines a battery energy storage system (BESS) with the PV array for smoothing the ar...
Research Proposal
Workshop on “Cyber Attacks in the Modern Power Systems: Definition, Simulation, and Implementation Based on SCADA Systems and Machine Learning Algorithms,” Presented in 29th Iranian Conference on Electrical Engineering (ICEE), 18-20 May 2021, Tehran, Iran.
Chapter
One of the severe challenges that the distribution system operators (DSOs) are faced in deregulated active distribution networks is the presence of massive functional entities such as distributed energy resources (DERs) and electric vehicles (EVs). The unpredictable actions from these entities increase the risk of congestion in the system. With an...
Article
Full-text available
The high complexity of modern power systems forces engineers to design, implement, and test different equipment, precisely. The real-time simulator is one of the best tools for a researcher to test and verify complex power systems in the laboratories. Based on this issue, they can study power system control methods as well as the effects of various...
Article
Full-text available
This paper presents a high-performance hardware-in-the-loop (HIL) system aimed to assist experts in developing and testing power electronics control board and their logic with Real-Time models of both electrical and mechanical components. To demonstrate the effectiveness of this system for HIL testing, an industrial DFIG control board has been test...
Article
Full-text available
This paper presents a new hybrid multi-objective optimization algorithm for optimal placement and sizing of Renewable Energy Generations (here, photovoltaic system) in distribution networks. For this purpose, a multi-objective non-dominated sorting genetic algorithm (NSGA II) is implemented to offer variety sets of solutions as a two/three-dimensio...
Conference Paper
Full-text available
In this paper, a robust droop-based control structure is developed in primary level of a hierarchical control scheme for robust performance and robust stability against parametric and topological uncertainties to 1) improve the robust stability and robust performance 2) resolve drawbacks of previously reported methods. Considering droop control sch...
Conference Paper
Full-text available
This paper describes the implementation of squirrel cage induction motor using high level graphical language in LabVIEW software. The mathematical models of the three-phase induction motor are implemented in LabVIEW block diagram pages. These models are in form of differential equations and Runge-Kutta 4th order method is implemented to solve the p...
Conference Paper
Full-text available
The power demand uncertainties and intrinsic intermittent characteristics of wind and solar distributed energy resources (DERs) make the conventional load flow methods inefficient in active distribution networks and microgrids. Some statistical tools such as Monte Carlo simulation (MCS) are always a reliable solution; However, they are time-consumi...
Conference Paper
Full-text available
An electric power system encounters with different operational dynamics on its generation units that is affected by different items such as limitations of turbine-governor response, the importance of accuracy, dynamic modeling and model validation, and system design and operational scenarios. To prevent system frequency collapse and consequent even...
Article
Full-text available
Hardware-in-the-loop (HIL) simulation is a technique that is being used increasingly in the development and test of complex systems. Real-world testing of an intricate system in a field like power plant can be challenging, time-consuming, expensive, and hazardous. HIL emulators allow engineers to test devices thoroughly and efficiently in a virtual...
Conference Paper
Full-text available
Power distribution systems are developing continuously and, consequently, the available short-circuit levels may exceed the ratings of the switchgear. One of the efficient methods of alleviating short-circuit currents is the reconfiguration. Network reconfiguration refers to the opening and closing of switches in a distribution system so that the n...
Chapter
During the last decays, insufficient investment along with an increase in power demand have caused power system operating points to get closer to their stability boundary. In this condition, the need to fast and precise assessment of system stability status and proper execution of remedial actions results in a tendency of dispatching centres toward...
Chapter
Power management system (PMS) which is a kind of special protection system is used to detect predefined conditions and execute timely remedial actions to prevent instability or improve operating point, especially in an islanded system. To this pur-pose, PMS usually includes several functions such as load shed-ding/sharing, generation shedding, and...
Conference Paper
Full-text available
In an islanded power network, the stability of the network is highly vulnerable. In these networks, disturbances can easily occur due to different events. Based on this events, imbalance between generation and load demand may lead to overloading or loss of generation cases. In order to overcome to these problems, Load Shedding (LS) is the emergency...
Article
Full-text available
Due to the increasing interest on renewable sources in recent years, the studies on integration of distributed generation to the power grid have rapidly increased. In order to minimize line losses of power systems, it is crucially important to define the size and location of local generation to be placed. Minimizing the losses in the system would b...
Conference Paper
Full-text available
For a number of years Power Management System (PMS) have been used to control islanded power systems. It can control system frequency and voltage as well as generated real and reactive power. The PMS would often have a load shedding facility to prevent the cascade failure of the generation system. The investigation is based on dynamics time domain...
Article
Full-text available
This paper presents a modified formulation for transmission network augmentation planning (TNAP) with regards to the role of corona power loss. The proposed approach applies Peek's law as a practical non-linear equation to calculate the impact of corona power loss. According to Peek's law, the corona power loss is sensitive to the geometric mean di...
Conference Paper
Full-text available
This paper presents a fuzzy multi-objective approach for clearing the reactive power market. The object functions that have been studied are the total payment function (TPF), voltage stability and the voltage deviation of the buses. All of the object functions are transformed to membership functions and then a pseudogoal function is derived to expr...
Conference Paper
Full-text available
Loss minimization in distribution networks has considered as great significance recently since the trend to the distribution generation will require the most efficient operating scenario for economic viability variations. Furthermore, voltage instability phenomena can occur in distribution systems and caused a major blackout in the network. The dec...
Conference Paper
Full-text available
Presence of the distributed generation (DG) in electric systems can represent a significant impact on the operational characteristics of distribution networks. The optimal placement and sizing of generation units on the distribution network has been continuously studied in order to achieve different aims. In this paper our aim would be optimal dist...
Conference Paper
Full-text available
Gas-insulated substations (GIS) have different specifications in proportion to air-insulated substations. Due to space limitation in the field of the gas-insulated substation (GIS), it is difficult to install extra arresters near the power transformers. Voltage magnification is due to reflections of transient waves in various junctions, low surge i...
Article
Full-text available
The necessity for flexible electric systems, changing regulatory and economic scenarios, energy savings and environmental impact are providing impetus to the development of Distributed Generation (DG), which is predicted to play an increasing role in the electric power system of the future. The optimal placement and sizing of generation units on th...
Article
Full-text available
Contingency screening and ranking is one of the most important issues for security assessment in the field of power system operation. The objective of contingency ranking is to quickly and accurately select a short list of critical contingencies from a large list of potential contingencies and rank them according to their severity. Then suitable pr...
Conference Paper
This paper presents an improved harmony search algorithm for the optimal reactive/voltage control problem. Optimal reactive/voltage control is a mixed integer, nonlinear optimization problem which includes both continuous and discrete control variables. The proposed algorithm is used to find the settings of control variables such as generator volta...
Conference Paper
Full-text available
Voltage collapse is instability of heavily loaded electric power systems that cause to declining voltages and blackout. Power systems are predicated to become more heavily loaded in the future decade as the demand for electric power rises while economic and environmental concerns limit the construction of new transmission and generation capacity. H...
Conference Paper
Full-text available
Over the years, as our knowledge of the interrupting process progressed, many techniques have been developed to test the circuit breakers and simulated arc models. To develop a realistic arc model, it is necessary to adopt the micro modeling approach, where a model is based on the physical processes constituting the phenomena. The model should cons...
Conference Paper
Full-text available
According to reports that had been published in many papers, switching operation in gas insulated substation (GIS) lead to malfunction in the substation equipments. These improper functioning contain of malfunction electronic equipments and deformation of transformer winding and bushing failures. The reason of malfunction of electronic equipments i...
Conference Paper
Full-text available
In a competitive power market, it is important to expand or strengthen transmission system in order to provide a fair environment to all market participants. In the present paper, a new method to determine an optimal transmission expansion plan in the deregulated power system has been proposed. In the proposed scheme, uncertainties, security index...
Conference Paper
Full-text available
The utilization of renewable energy sources in electric power systems is increasing quickly because of public apprehensions for unpleasant environmental impacts and increase in the energy costs involved with the use of conventional energy sources. Despite the application of these energy sources can considerably diminish the system fuel costs, they...
Article
The utilization of renewable energy sources in electric power systems is increasing quickly because of public apprehensions for unpleasant environmental impacts and increase in the energy costs involved with the use of conventional energy sources. Despite the application of these energy sources can considerably diminish the system fuel costs, they...
Conference Paper
Full-text available
The security of a power system can be defined as its ability to withstand a set of severe disturbances, and to survive transition to an acceptable new steady state condition. In this paper harmony search algorithm has applied to determine optimal location of FACTS devices in a power system to improve power system security. Three types of FACTS devi...
Article
Full-text available
In this paper enhancement of power system stability using coordination between power system stabilizer (PSS) and static VAR compensator (SVC) as stabilizers of system and generator is studied. Genetic algorithm is used for optimization and finding optimal control parameters. To indicate capability of controllers, three scenarios have been chosen. I...

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Projects

Projects (3)
Project
In this Project, the complete electric power system is implemented in MATLAB/Simulink environment. Different virtual instrument (VI) pages are modeled in the graphical programming language of LabVIEW which enable fast and reliable measurement functions, such as data acquisition, archiving, real-time graphical display and processing. Interaction between MATLAB and LabVIEW is accomplished by generating a Phar Lap ETS Targets *.dll file which enabled two software to exchange real-time data. Also, a real excitation system is considered as a test case for introduced HIL system. This equipment is connected to LabVIEW software through a National Instrument PXI technology. Different scenarios are simulated in the designed Power System Emulator. Validity of the implemented model for excitation system is verified by finding good matching between MATLAB and HIL simulation results.
Project
This project discusses the conceptual design and operation of an isolated power system simulator. This simulator with all of its related equipment are considered as RTISim and can evaluate island operation condition in order to verify the speed droop of power plants, power turbines capabilities and island operation potential. RTISim replaces the real system frequency and active power feedback of the governor by a simulated frequency and active power which are produced in LabVIEW software. In this case, the turbine-governor capability can be investigated in island network without being disconnected from the external grid. Based on this issue, the risk of operation of islanded system during the test, can be eliminated. LabVIEW, as a real time software, is used to create different events and also record related results such as frequency deviation and active power changes. These data can help engineers to model turbine governor as precisely as possible in power system analysis software.
Project
During the last decays, insufficient investment along with an increase in power demand have caused power system operating points to get closer to their stability boundary. In this condition, the need to fast and precise assessment of system stability status and proper execution of remedial actions results in a tendency of dispatching centres towards special protection system (SPS). This system is a smart monitoring and control system which detects the predefined condition and automatically executes pre-specified remedial actions to improve system stability. Indeed, such system can reduce human faults and prevent economic loss. Power Management System (PMS) is a kind of SPS which is usually implemented in industrial power plants to intelligently manage remote devices and perform required actions against system contingency, especially in islanding condition. PMS has significant functions such as load shedding/sharing, generation shedding, generation mode control, and import/export control to the control voltage, frequency and active/reactive power of the system. In this chapter, PMS configuration, and its major functions are explained, and its impact on system stability is analysed through detailed dynamic simulations in DIgSILENT power factory software. In these simulations, DIgSILENT Simulation Language (DSL) is used to model Turbine-Governor, excitation system and signals.