Etude des FACTS (Flexible AC Transmission System) et de leur comportement dans les réseaux de transport et d'interconnexion

FACTS Systems (Flexible AC Transmission System) are approached to improveperformance transport networks and interconnection. Many studies have been donerecently on these systems for increasing the speed of parameter controllines (voltage, impedance and phase shift). The shunt and series compensation using systemspower electronics are FACTS concepts and enable networks to be more flexible.Shunt compensation is preferably carried out the tension carrier while the series compensationis used to reduce the impedance of the lines and thus to increase the transfer capabilitypower and improve the distribution of power flows in the network, as well asStatic and dynamic stability. Several systems have been presented in recent years. Thisreport presents a comparative study of the static and dynamic behavior of threeFACTS systems in transport networks: the SVC (Var Compensator Statie), the STATCON(ST condense ATIC) and the TCSC (Thyristor Controlled Series Compensator). This work focuses onvoltage stability and power transfer capacity and undue study of the action of L TC(Load Tap Changers). The effects of PSS (Power System Stabilizers) are also analyzed in thepurpose of later compare them with FACTS systems. The results were obtained usingdifferent tests networks (network 14 noeus IEEE, Simplified French UHV network, New England network39 knots) and showed the impact of each FACTS system on power networks.Les systèmes FACTS (Flexible AC Transmission System) sont pressentis pour l'amélioration desperformances des réseaux de transport et d'interconnexion. De nombreuses études ont été faitesrécemment sur ces systèmes concernant l'augmentation de la vitesse de contrôle des paramètres deslignes (tension, impédance et déphasage). Les compensations shunt et série utilisant des systèmesd'électronique de puissance sont des concepts FACTS et permettent aux réseaux d'être plus flexibles.La compensation shunt réalise de préférence le support de la tension alors que la compensation sérieest employée pour réduire l'impédance des lignes et donc pour augmenter la capacité de transfert depuissance ainsi qu'améliorer la répartition des transits de puissance dans le réseau, aussi bien que lesstabilités statiques et dynamiques. Plusieurs systèmes ont été présentés ces dernières années. Cerapport décrit une étude comparative concernant le comportement statique et dynamique de troissystèmes FACTS dans les réseaux de transport: le SVC (Statie Var Compensator), le STATCON(ST ATic CONdenser) et le TCSC (Thyristors Controlled Series Compensator). Ce travail est axé surla stabilité de tension et les capacités de transfert de puissance et indu l'étude de l'action des L TC(Load Tap Changers). Les effets des PSS (Power System Stabilizers) sont également analysés dans lebut de les comparer ultérieurement aux systèmes FACTS. Les résultats ont été obtenus à l'aide dedifférents réseaux tests (réseau 14 noeus IEEE, réseau UHV français simplifié, réseau New-England39 noeuds) et ont montré l'impact de chaque système FACTS sur les réseaux de puissance

Impact of IEC 61850 GOOSE Communication Quality on Decentralized Reactive Power Control in Smart Distribution Grids – a Co-simulation Study

International audienceSmart grids are expected to increase efficiency, reliability and sustainability of future energy usage. Employing state-of-the-art information and communication technologies, within power grids, is defining for smart grids; therefore interaction between energy grids and communication networks requires thorough study. Combined simulation of the behaviour of the electrical and communication network would allow to analyse their influences on one each other.In this paper, the results of a MATLAB® /Simulink® cosimulation of an electrical distribution grid containing two renewable sources in interaction with its communication network are presented. Communication between different nodes is based on the IEC 61850 GOOSE protocol, whose simulation model incorporates its different efficiency and reliability features. Communication network and electrical grid are modelled using SimEvents® blocks and SimPowerSystems® blocks, respectively. The effect of perturbations on the reliability of the data transfer links, while information to perform decentralised reactive power control is flowing on them, is examined

Co-simulation of a Low-Voltage Utility Grid Controlled over IEC 61850 protocol

International audienceThis paper presents a co-simulation model using MATLAB® toolboxes to illustrate an interaction between the communication system and the energy grid, coherent with the concept of smart grid that employs IEC 61850 communication standard. The MMS (Manufacturing Message Specification) protocol supported by IEC 61850, based on TCP/IP is used for the vertical communication between the Supervisory and Data Acquisition (SCADA) system and Intelligent Electronic Devices (IEDs) embedding the local control of different parts of the smart grid. In this paper an IED supporting the power control of a photovoltaic (PV) plant connected to a low-voltage (LV) utility grid is considered. Communication system consisting of the transport layer and a router placed on the network layer is modeled as an event driven system using SimEvents® toolbox and energy grid is modeled as a time-driven system using SimPowerSystems® toolbox. Co-simulation results are obtained by combining different communication scenarios and time-varying irradiance scenarios for thee PV plant when the PV plant is required to provide a certain power in response to a power reference received from SCADA over the communication network. The analysis aims at illustrating the impact that stochastic behavior and delays due to network communication have on the global system behavior

FMI Compliant Approach to Investigate the Impact of Communication to Islanded Microgrid Secondary Control

In multi-master islanded microgrids, the inverter controllers need to share the signals and to coordinate, in either centralized or distributed way, in order to operate properly and to assure a good functionality of the grid. The central controller is used in centralized strategy. In distributed control, Multi-agent system (MAS) is considered to be a suitable solution for coordination of such system. However the latency and disturbance of the network may disturb the communication from central controller to local controllers or among agents or and negatively influence the grid operation. As a consequence, communication aspects need to be properly addressed during the control design and assessment. In this paper, we propose a holistic approach with co-simulation using Functional Mockup Interface (FMI) standard to validate the microgrid control system taking into account the communication network. A use-case of islanded microgrid frequency secondary control with MAS under consensus algorithm is implemented to demonstrate the impact of communication and to illustrate the proposed holistic approach.Comment: Proceedings of the IEEE PES ISGT Asia 2017 conferenc

Système innovant de prévention des pannes d'électricité généralisées (blackouts)

Journée Scientifique du Cluster de recherche ENERGIES de la Région Rhône-Alpe

VERS L'AMELIORATION DE LA SECURITE DES<br />RESEAUX ELECTRIQUES DE PUISSANCE

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VERS L'AMELIORATION DE LA SECURITE DES<br />RESEAUX ELECTRIQUES DE PUISSANCE

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A multi-objective genetic algorithm approach to optimal allocation of multi-type FACTS devices for power system security

International audienc