Abolfazl Khodadadi

• Doctor of Engineering
• PhD at KTH Royal Institute of Technology

Contracts for Difference (CfDs) have emerged as a key policy instrument to incentivize renewable energy investments by mitigating revenue volatility. However, conventional CfDs, while effective in fostering growth in renewable energy sources, can introduce market distortions. These distortions arise from misaligned incentives, particularly the 'pro...

With the increasing integration of power plants into the frequency-regulation markets, the importance of optimal trading has grown substantially. This paper conducts an in-depth analysis of their optimal trading behavior in sequential day-ahead, intraday, and frequency-regulation markets. We introduce a probabilistic multi-product optimization mode...

p>This paper investigates Frequency Restoration Reserve (FRR) allocation and dimensioning approaches in a multi-area context, focusing on the Nordic Load-Frequency Control (LFC) block. We aim to (i) provide a framework for multi-area FRR dimensioning applicable to dynamic as well as static approaches, and (ii) enhance the understanding of how the a...

p>This paper investigates Frequency Restoration Reserve (FRR) allocation and dimensioning approaches in a multi-area context, focusing on the Nordic Load-Frequency Control (LFC) block. We aim to (i) provide a framework for multi-area FRR dimensioning applicable to dynamic as well as static approaches, and (ii) enhance the understanding of how the a...

Parameter estimation of power plants is one of the main challenges of power system studies. Among different components of a power plant, excitation system (EXS) has great importance because of its effect on dynamic stability of power systems. Thus, it is vital to have accurate models of EXSs for power system dynamic studies. Since the field voltage...

This paper presents a novel methodological approach for the optimal day-ahead energy market bidding behavior of a cascaded hydropower plants (HPPs) portfolio in the sequential electricity markets. The understudy markets are day-ahead energy market and manual frequency restoration reserve (mFRR) markets in both capacity and energy setups. The introd...

The current energy transition needed to meet the world climate objectives is causing stability challenges in all the power systems. As a consequence, finding solutions that allow dealing with those frequency stability issues is critical to achieving the sustainability objectives. In this context, batteries can find new revenue opportunities by bein...

This article presents a new approach for finding the optimal multimarket trading strategy of cascaded hydropower plants (HPPs) in the sequential electricity markets. These markets are day-ahead energy market, the market for frequency containment reserve in normal mode (FCR-N), and manual frequency restoration reserve markets for both energy product...

This paper presents a techno-economic strategy for reliability improvement and loss reduction in active distribution networks and microgrids including distributed generations (DGs). This approach is a theoretical method stand on the determination of locational marginal price in each bus including DGs. In this method, each DG is a player of game the...

System operators have the option to trade balancing reserves among countries and operators. In order to trade balancing reserves with other system operators the markets should be harmonized. While the spot and intraday markets are already harmonized within the Nordics, the balancing markets still display differences. The differences can be subtle,...

The combination of supercapacitors (SCs) with Li-ion Batteries (LIBs) and Lead-Acid Batteries (LABs) as hybrid ESSs (HESSs) have widely been proposed for Microgrid (MG) applications. The SCs of HESSs eliminate the stress of surge currents on LIBs and LABs, which increases their life cycles, and decreases their life cycle costs and hence decreases t...

This paper presents a mathematical modelling and parameter identification for the excitation system and synchronous generator in a single framework. For modelling process, the seventh-order dynamical model of synchronous generator and detailed model of excitation system cards are considered. Then, the parameters of overall model are identified usin...

This paper presents a multi-objective method to optimally place the Distribution Static Synchronous Compensator (D-STATCOM) in a distribution system using the multi-objective genetic algorithm (MOGA). In the proposed method, the average current total harmonic distortion (THD), installation and operation cost functions are considered as the objectiv...

This paper deals with the concept of small signal stability (SSS) issue in an electronically-interfaced microgrid with large penetration of distributed energy resources (DERs) subjected to the parametric uncertainties. Utilizing a method to enhance SSS of the system stemmed from industrial experiences is the first achievement of this study, which i...

In this paper, mathematical modeling and identification of an industrial, 200 MW steam turbine and generator are taken into consideration based on operational data. This data is acquired by the measuring devices and data acquisition systems from precisely designed tests. Due to the significance of power systems dynamic studies, steam turbine-genera...

In this paper, mathematical modeling and identification of an industrial, 200 MW steam turbine and generator are taken into consideration based on operational data. This data is acquired by the measuring devices and data acquisition systems from precisely designed tests. Due to the significance of power systems dynamic studies, steam turbine-genera...

An optimal lightning protection scheme for a substation using shielding wires is investigated in this paper through computer software analysis. An economic approach is utilized by choosing a reasonable trade-off between protection, the number of shielding wires and the heights of them from the ground. This study is initially applied to a simple two...

This paper presents a control approach for improving transient behavior of an autonomous inverter-based microgrid employing secondary controller. A feed-forward loop is utilized to enhance the characteristics of active and reactive power responses. This stage is implemented in power controller section. It can be proved that this approach has the ca...

In this paper, a control approach for enhancing the characteristics of a microgrid system is presented. This microgrid includes a PV system in its DC link beside a DC/DC convertor as the interface for connecting to the system inverter. Due to this, the dynamics of the PV system is also considered. The capability of this control system in maintainin...