Sidi-Rachid Cherkaoui

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has already been proven that analog emulation overcomes the speed limits of numerical simulators by means of a simple fixed-topology prototype. In order to enhance the modularity and the size of the emulated power system a dedicated platform based on a fie ...

The ever-increasing requirement for reliability and quality of supply suggests to enable the self-healing features of modern distribution networks employing the intelligent measurement, communication, and control facilities of smart grids. In this paper, t ...

The paper presents a model-based control strategy for optimal asset management of hydroelectric units in run-of-river hydropower plants. The proposed control strategy aims to operate the unit at the best efficiency while improving water flow management and ...

This paper presents three basic approaches for determining the transient stability of a power network by using an analog VLSI chip for simulating or emulating the system behavior. The main advantages of using this method are the much shorter computation time and lower complexity compared to the currently used methods that are based on numerical calculations or discrete analog simulators

The paper presents a method for the co-optimization of energy storage systems allocation and line reinforcement in active distribution networks. The objective is to guarantee the capability of an active distribution network to follow a dispatch plan by app ...

The transition towards renewable energy is leading to an important strain on the energy grids. The question of designing and deploying renewable energy technologies in symbiosis with existing grids and infrastructure is arising. While current energy system ...

Voltage stability imposes important limitations on the power systems operation. The system should be operated with an adequate voltage stability margin by the appropriate scheduling of reactive power resources and voltage profile. The main countermeasures ...

This paper presents a microelectronic emulation approach for high-speed power system computation. First, the problems of existing power system simulators are detailed. This shows that microelectronic emulation is a possible solution for solving the speed p ...

The paper presents a centralized real-time adaptive and model-based voltage control algorithm for Active Distribution Networks (ADNs). Differently from the available literature, the proposed algorithm merely relies on the control of Battery Energy Storage ...

This paper suggests several approaches for determining the transient stability of a power network by using an analog VLSI chip for simulating the system behavior. The main advantages of using this method are the much shorter computation time and lower complexity compared to the currently used methods, which are based on numerical calculations or discrete analog emulators

This paper focuses on a new pipelined processing unit architecture dedicated to mixed-signal power system emulation. Prior research in this field has proven that analog emulation overcomes the speed limits of numerical simulators with reliable accuracy. Th ...

The paper presents the development of a model-based Smart Power Plant Supervisor, a digital tool targeting the optimization of the operation and maintenance of hydroelectric units to improve ancillary services provision to the power system. The paper focus ...

This paper compares three heuristic methods (SA, TS and GA) applied to the optimal location of FACTS devices in a power system. The optimizations are made on three parameters: the location of the devices, their types and their sizes. The FACTS devices are located in order to enhance the system security. Five types of FACTS controllers are modeled for steady-state studies: TCSC, TCVR, TCPST, SVC and UPFC. Simulations are performed on an IEEE 118-bus power system for several numbers of devices. Results show t

This paper deals with the conceptual design of a decision aid function for restoration (DAFFOR) of transmission networks after major black-outs, and in particular with real time considerations. Some important characteristics of the proposed DAFFOR are: (a) capability of taking into account the dynamic evolution of the network state, due to either a control action or an unforeseen event; (b) interactive mode, which permits users to request a validation of their own suggestion; (c) coupling with an internal d

Energy Storage Systems (ESSs) has an important role in Active Distribution Networks (ADNs). Within this context this paper focuses on the problem of ESSs optimal siting and sizing. Following similar approaches already proposed by the Authors, this paper us ...

The paper discusses the model identification, validation and experimental testing of current-to-voltage dynamic circuit models for a grid-connected MW-class battery. The model refers to an utility-scale 720 kVA/560 kWh battery energy storage system (BESS) ...

In this paper, we describe a method for the energy management, according to minimal costs criteria over one year (month after month), of an electrical utility, which has to deal with nuclear and hydro power plants, sale/purchase and exchange contracts, and spot market business. The chosen method for minimizing the costs is linear programming with most variables continuous, and a few binary ones. The results obtained allow us the management of every power plant, contract and the spot market business, in orde

Although the techniques for normal price prediction are well advanced, price spike prediction remains a challenge. The aim of this paper is to present a method to predict both normal day-ahead electricity prices as well as day-ahead price spikes using clas ...

Large horsepower induction motors play a critical role as industrial drives in production facilities. The operational safety of distribution networks during the starting transients of these motor loads is a critical concern for the operators. In this paper ...

This paper analyzes the impacts of flexible demands on day-ahead market outcomes in a system with significant wind power production. We use a two-stage stochastic market-clearing model, where the first stage represents the day-ahead market and the second s ...

Sidi-Rachid Cherkaoui

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A mixed-signal platform dedicated to power system dynamic computation

Distribution Network Restoration in a Multiagent Framework Using a Convex OPF Model

Improving frequency containment reserve provision in run-of-river hydropower plants

Analog VLSI solution to the stability study of power networks

Optimal Co-Planning of ESSs and Line Reinforcement Considering the Dispatchability of Active Distribution Networks

On the role of energy infrastructure in the energy transition. Case study of an energy independent and CO2 neutral energy system for Switzerland

Reactive power reserve management: Preventive countermeasure for improving voltage stability margin

High-Speed Power System Stability Simulation Using Analog Computation

An Adaptive Model-Based Real-time Voltage Control Process for Active Distribution Networks Using Battery Energy Storage Systems

Approaches for analog VLSI simulation of the transient stability of large power networks

An ultra high-speed, mixed-signal emulator for solving power system dynamic equations

Digitalization in hydropower generation: development and numerical validation of a model-based Smart Power Plant Supervisor

Optimal location of FACTS devices to enhance power system security

Decision aid function for restoration of transmission power systems: conceptual design and real time considerations

Optimal siting and sizing of distributed energy storage systems via alternating direction method of multipliers

Experimental Assessment of the Prediction Performance of Dynamic Equivalent Circuit Models of Grid-connected Battery Energy Storage Systems

Long-term energy management optimization according to different types of transactions

Forecasting price spikes in European day-ahead electricity markets using decision trees

Optimal Load Restoration in Active Distribution Networks Complying With Starting Transients of Induction Motors

Is Being Flexible Advantageous for Demands?