-
[show abstract]
[hide abstract]
ABSTRACT: CESI (Centre Elettrotecnico Sperimentale Italiano) and AFCo (Ansaldo Fuel Cells SpA) have launched a joint project that aims at developing and demonstrating a small-sized hybrid system that combines the MCFC (Molten Carbonate Fuel Cell) technology with a microturbine (MTG). A 100 kW cogeneration power plant is under construction at the CESI site in Milan. The plant will be connected to the low-voltage electrical grid. Due to the high degree of technological innovation of this hybrid plant, a simulator has been developed as an important tool for process design support and plant automation definition (control system and plant procedures specification). The purpose of this document is to present the dynamic computer simulation model of the hybrid plant and some examples of application. In an experimental project of innovative nature, such a model supplies helpful information for the definition of automation procedures for correct and safe plant operation. These procedures can then be validated by simulation. The simulator also supports the project design verifying the dynamic behaviour of some critical components. The model has been developed using LegoPC (a CESI proprietary dynamic modular code) and LegoSim (an interactive real time environment developed by CESI integrating LegoPC with MATLAB-Simulink).
Power Tech Conference Proceedings, 2003 IEEE Bologna; 07/2003
-
[show abstract]
[hide abstract]
ABSTRACT: The aim of the paper is the analysis of the dynamic behavior of a thermoelectric power plant equipped with a steam unit and a gas turbine during the early phases of a black-start-up maneuver for the network restoration. Models of different detail level for two production units and the relevant regulators have been implemented into two simulation tools. The paper contains the description of the different models, identifies the cases in which the two simulation codes predict similar results and presents the main characteristics, as well as the fields of application of the two codes. As an example, the paper presents also an application of simulators developed for the planning and the preparation of island operation and start up field tests of a power station.
Power Tech Conference Proceedings, 2003 IEEE Bologna; 07/2003
-
[show abstract]
[hide abstract]
ABSTRACT: The paper reports on the development of a model of the electrical
auxiliaries of a typical Italian fossil-fired power station. The model
is developed as part of a real-time training simulator of the ENEL
operators' School at Piacenza (Italy), in order to reproduce transients
with time constants of the order of a few seconds or longer, such as
voltage variations at the system buses, load changes, operator
manoeuvres, and intervention of the protective systems. For the same
simulator, an additional task-model has been developed to reproduce the
re-start of the power station after a complete or partial loss of the
transmission system. Each model works within the LegoCad environment, a
powerful software system developed at the Research and Development
Department of the Italian Electricity board (CRA-ENEL) to fulfil its own
needs of power plant simulation for mechanical and control system design
as well as for operator training
Electrotechnical Conference, 1996. MELECON '96., 8th Mediterranean; 06/1996
-
[show abstract]
[hide abstract]
ABSTRACT: During the last ten years, some of the Italian thermoelectric plants have been repowered by topping the existing steam sections with gas turbines. To investigate the early restoration capabilities of these repowered plants after a blackout and to assess the requirements of the power plant control system, a simulator has been built and has been validated by means of available measurements at power stations. The paper describes the simulator, the control system modifications and some simulation results outlining the efficiency of the repowered unit to reenergise part of the high-voltage transmission network.
Control Engineering Practice.
