dynamic stability
Study of the stability of the electrical power grid for aircraft carrier PA2
Requirement As part of the project for the realization of a second French aircraft carrier PA2, in the "All Electrical Ship" version, it was necessary to validate the design choices for the electrical power grid Read more…
electromagnetic transients
Study of the ferroresonance risk on an industrial site
Requirement As part of the connection of a 63/20 kV transformer station supplying a gas compression plant, CAP-SIM investigated the risk of ferroresonance on the site Realization An initial theoretical characterization step of the risk Read more…
design of systems
A study of the modelling of a microgrid and its Power Management System
Requirement This project involved designing an islanded system supplied by a collection of multiple renewable electrical energy sources. The inhomogeneous character of the sources (wind turbines, fuel cells, diesel generators, etc.) required a suitable control system Read more…
selectivity
Selectivity study for the Severstal site
Requirement As part of the construction of the Severstal industrial site in Russia, Capsim carried out a selectivity study of the protection plan of all the HV and LV electrical grids. Realization The input data Read more…
functional analysis
Functional analysis for specification of an emergency power generator
Requirement The objective of this study was to define the Specification for modifications to be applied to an industrial emergency power unit so that it could fulfil specific requirements, notably in terms of the safety Read more…
functional analysis
Functional analysis for specification of a ship propulsion system
Requirement When undertaking its ship-construction activities, our customer is subject to the requirements of reliability standards and must design its ships in such a way that they are always able to conserve 50% of the Read more…
electricity distribution grid
Sizing the distribution grid for a new town
Requirement As part of a new town pilot study (eco-city concept), it was necessary to carry out a basic pilot project for the electricity distribution grid. Realization Assumptions on consumption, linked to specific characteristics of Read more…
electricity distribution grid
Sizing an earth network
Requirement As part of a gas compression plant installation project, the customer needed to validate and justify the sizing of the earth network in a way that complied with the standard in force for the Read more…
design of systems
Modelling the electrical supply system for the JT-60 Tokamak in Japan
Requirement In order to accompany the nuclear fusion research activities of the ITER project, it has proved necessary to improve the Japanese JT60 fusion reactor (tokamak). Capsim has participated in the design of the project Read more…
design of systems
Modelling an electromagnetic lifting system
Requirement The system studied is composed of vertical rods whose lower ends are immersed in a liquid under pressure. Vertical displacement of the rods is achieved using grippers activated by induction coils. In order to Read more…
calculation tools
Maintenance in operational condition for modeling and simulation platform MOSARE
Requirement Customer : DGA Marine This project was developed by CAPSIM to meet the following requirements : - to have a tool to increase the technical expertise of the new programs - to appraise the Read more…
electricity distribution grid
Sizing the auxiliary electrical supply grid for ITER
Requirement Customer : ITER Organization ITER is a very large-scale international scientific experiment for demonstrating the scientific and technological feasibility of electricity production using energy from nuclear fusion and leading to its industrial and commercial Read more…
reliability
Reliability study on the starting time of a pump
Requirement This study involved determining the influence of the tolerances applied to the various parameters of a motor driven pump and its power supply system, on its capacity to change from a low speed regime Read more…
calculation tools
Creation of a tool for calculating the impedance of electric railway lines
Requirement Over the past few years, technological developments in power electronics have allowed locomotives to be powered via a new generation of converters. One consequence of the arrival of this new equipment has been the Read more…
dynamic stability
Study of the electric coupling of two FPSO ships
Requirement Because of changes in power consumption and the need for redundant power supply to FPSO (Floating Production Storage and Offloading Unit), it is often of interest to electrically interconnect units present in the same Read more…
incident
Incident analysis and dynamic study on an industrial grid
Requirement The industrial site studied was constructed in the 1950s and has been subject to many changes. The electricity distribution grid on the site contains several autonomous sources (turbine generators), distributed at various points on Read more…
selectivity
Reliability of the network and selectivity study
Requirement The site studied was a very large facility undergoing reconversion that would result in it accommodating new consumption units and new generators (biomass plant) using the existing electrical grid. In this configuration, the operator, Read more…
functional analysis
Feasibility study of replacement converter units
Requirement As part of a program for maintaining the operational condition of ships, the customer wished to study the feasibility of replacing the power converter sets which used rotary equipment with a solution based on Read more…
dynamic stability
Study of the stability of turbine generators
Requirement Prior to the stability study described here, CAPSIM had produced power flow calculations and calculations of the short-circuit currents for the operator of an industrial electrical power grid. These calculations had been used to Read more…
dynamic stability
Stability study for the renovation of offshore facilities
Requirement On an existing oil installation consisting of several platforms, the production of electricity and the power supply for water injection pumps on the platforms was being directly realized by ageing turbine generators. The obsolescence Read more…
grid connection
Wind farms electrical connection study
Requirement During a wind farm electrical connection study, the future producer has to be in accordance with the latest decree (Decree on technical design and operation for connection to a public electricity supply in low Read more…
calculation tools
Assistance for real time modelling of the EC175 helicopter electrical network
Requirement For the development of a simulation platform to train pilots for EC175 helicopter, EUROCOPTER needed a model of the electrical network which is representative regarding to the pilot and the external systems. It must Read more…
harmonic
Analysis of an incident on an installed capacitor bank, reactive compensation and harmonic analysis
Requirement The customer wished to understand the causes of a fault observed on the output of a 15 kV capacitor bank which had caused its removal from service. It also wanted CAPSIM to carry out Read more…
dynamic stability
Reactive capability requirements for cogeneration plant
Requirement In order to connect a cogeneration plant to public grid, our customer needed to demonstrate to RTE that his facility was according to requirements. Especially, he needed to simulate the following cases : - Read more…
dynamic stability
Stability study of turbine generators during a dip in voltage
Requirement The French law of 23 April 2008, which specifies the conditions for connecting generating units to the public distribution grid, changed the requirements relating to disrupted voltage regimes on public grids. Under certain conditions, Read more…
selectivity
Study for updating the protection plan of a 10 kV port distribution grid
Requirement The distribution grid of the Arsenal de Toulon is one of the largest private grids in France with more than 150 transformer stations. Because of the obsolescence of certain protection devices and the limitations Read more…
short-circuit
Modelling of an electricity supply grid for a nuclear power station
Requirement The operator of the nuclear power station wanted to be able to predict the impact, from an electrical point of view, of particular configurations of the grid, while avoiding the need to perform on-site Read more…
electricity distribution grid
Sizing current transformers
Requirement This study involved sizing 156 current transformers (CT) which will be installed on the HVA grid of an industrial site in the Middle East. Sizing the current transformers is a critical step in the Read more…
calculation tools
Realization of a simulation program for the electricity supply grid to a tokamak
Requirement Customer : ITER Organization ITER is a very large-scale international scientific experiment for demonstrating the scientific and technological feasibility of electricity production using energy from nuclear fusion and leading to its industrial and commercial production. Read more…
dynamic stability
Study of penetration rate of renewable energy on a sensitive MV distribution network
Requirement A distribution system operator wanted to assess the impacts on a urban grid of massive integration of decentralized power generation (solar plants and hydropower) and new consummers (electric vehicles, high power electrical PAC ...) Read more…
electricity distribution grid
Study of Transient Recovery Voltage (TRV)
Requirement The Transient Recovery Voltage (TRV) is the voltage which appears across electrical equipment shortly after a current interruption. The waveform of the recovery voltage actually depends on the circuit configuration (inductive or capacitive nature). Read more…
electromagnetic transients
Transformer Energisation study
Requirement When a transformer is energised, two main phenomena occur; an inrush current and a voltage drop at the primary side. The amplitudes of these two phenomena depend greatly on the remanent (or residual) magnetic Read more…
grid connection
Study of the connection of a 33MW photovoltaic power station at Casteljaloux to the 63kV RTE grid
Requirement For the case of the connection of a power station to the French HV network (HTA RTE), the PV power generation company must prove that its infrastructure will not cause instability on the grid. Read more…
dynamic stability
Study of the impact of a 25mW wind farm on the RNI of Togo
Requirement For the construction project of the first ever wind farm in West Africa, Capsim was chosen to perform a study regarding the impact and the compatibility of a 25MW wind farm on the “Réseau Read more…
electromagnetic transients
Energisation study of transformers in a wind power station
Requirement When a transformer is energised, two main phenomena occur; an inrush current and a resulting voltage drop at its primary side. The amplitudes of these two phenomena depend greatly on the remnant (or residual) Read more…
dynamic stability
Impact study of a 33MWp photovoltaic power station connection to the national electricity transmission grid in sub-Saharan Africa
Requirement For the case of energetic development in sub-Saharan Africa, the construction of a 33MWp photovoltaic power station is planned. This future power station will be connected to the national electricity transmission grid of the Read more…
design of systems
Study of the choice of DC voltage level within a photovoltaic power station
Requirement Customer : CEA INES The breakthroughs in the field of power electronics regarding on one hand photovoltaic panels and on the other hand enable to consider higher levels of DC distribution voltage within PV power Read more…
hybridisation
Tool enabling the conception and validation of the control of hybrid electrical smartgrids
Requirement Customer : JSC Mobile Energy The hybridation of Diesel power stations with renewable energy sources is interesting in the case of isolated electrical grids which are very far from any transmission grid. The aim of Read more…
harmonic
Harmonic study, capacitor bank switching analysis and TRV calculations – Zmorot PV project
Requirement The project consists in the construction of a 52MW PV power station in the near future in Israel. This PV power station will be connected to the 161kV HV electrical grid of the country. Read more…
electricity distribution grid
Feasibility Study – Study of a DC network with ETAP
Requirement The customer wished to be able to create and exploit an ETAP model of his LV (28V) DC network so as to study the electrical behavior in steady network conditions as well as during Read more…
incident
Expertise regarding diesel generator fed complex systems
Requirement Following the commissioning of the all electric ship’s power station, a phenomenon active power “pumping” (of several MW) between 2 diesel generators has been observed. This phenomenon is characterised by active power transfer in Read more…
electricity distribution grid
Analysis of an earthing system
Requirement For the extension of the EDF Saint Raphael source substation, EDF wished to validate the sizing of the earthing system of the substation. Realization CAPSIM built a numerical model of the earthing system of Read more…