Home > Information and Control in Power Systems > First IFAC Workshop on Convergence of Information Technologies and Control Methods with Power Plants and Power Systems (2007)
First IFAC Workshop on Convergence of Information Technologies and Control Methods with Power Plants and Power Systems (2007)
Information and Control in Power Systems, Volume# 1 | Part# 1
Location: Technical University of Cluj-Napoca, Romania
National Organizing Committee Chair: Abrudean, Mihail
International Program Committee Chair: Malik, Om; Stoian, Ioan
Conference Editor: Dobra, Petru
ISBN: 978-3-902661-38-8
Start Date: 2007-07-09
End Date: 2007-07-11
| Paper Title | Authors | Updated | |
|---|---|---|---|
| Front cover | 2007-07-09 |
|
|
|
Authors: None
Abstract:
Keywords:
Digital Object Identifier (DOI): 10.3182/20070709-3-RO-4910.90001
Conference: First IFAC Workshop on Convergence of Information Technologies and Control Methods with Power Plants and Power Systems (2007)
Location: Technical University of Cluj-Napoca, Romania
Start Date: Mon Jul 09 2007 - End Date: Wed Jul 11 2007
Page Numbers: ---
|
|||
| Technical Program | 2007-07-09 |
|
|
|
Authors: None
Abstract:
Keywords:
Digital Object Identifier (DOI): 10.3182/20070709-3-RO-4910.90002
Conference: First IFAC Workshop on Convergence of Information Technologies and Control Methods with Power Plants and Power Systems (2007)
Location: Technical University of Cluj-Napoca, Romania
Start Date: Mon Jul 09 2007 - End Date: Wed Jul 11 2007
Page Numbers: ---
|
|||
| Modelling, simulation and control of large power plants | Katebi, Reza | 2007-07-09 |
|
|
Authors: Katebi, Reza
Abstract: The traditional approach to modelling complex power plants often leads to cumbersome, expensive and inefficient models. This paper is concerned with the development of a systematic, hierarchical and modular modelling procedure and advanced control system design for large power plants. The system component defined by a generic nonlinear dynamic structure is arranged in a hierarchical structure with the appropriate communication interface. The nonlinear dynamic model is then employed to produce steady-state models and linear models, which can be used to investigate the transient characteristics, stability behaviour and control requirements. Advanced control methods are then proposed to optimally implement a desired set point change whilst satisfying operational variable constraints. In common with many process control applications, it is not possible to move from one power plant operating condition to another instantaneously. Previous ad-hoc methods to automate the transition usually involve ramping the set point over some pre-determined time horizon and implicitly satisfying the operational and safety constraints. The design of optimal methods for the implementation of future set points trajectories is addressed here using the techniques of Model Based Predictive Control (MBPC) for large-scale systems. A generic unit of Combined Heat and Power (CHP) unit is employed as an example.
Keywords: power plants,hierarchical modelling,simulation and control,set points optimisation,supervisory
Digital Object Identifier (DOI): 10.3182/20070709-3-RO-4910.00002
Conference: First IFAC Workshop on Convergence of Information Technologies and Control Methods with Power Plants and Power Systems (2007)
Location: Technical University of Cluj-Napoca, Romania
Start Date: Mon Jul 09 2007 - End Date: Wed Jul 11 2007
Page Numbers: 3-14
|
|||
| Advanced concepts in power control systems | Dumitrache, Ioan; Iliescu, Sergiu Stelian | 2007-07-09 |
|
|
Authors: Dumitrache, Ioan; Iliescu, Sergiu Stelian
Abstract: In this paper are presented some new concepts of control applied in Power Systems. Are given the architectures and methodologies based on the agents theory. The complexity of Power Systems is included into a new paradigm - Complex Adaptive Systems - and the modelling and Control of Power Systems based on intelligent agents are considered. Some concepts on hierarchical and heterarchical architectures which include different intelligent techniques are also presented in this paper.
Keywords: electrical power systems (EPS),multi-agent systems (MAS),complex,adaptive systems (CAS)
Digital Object Identifier (DOI): 10.3182/20070709-3-RO-4910.00003
Conference: First IFAC Workshop on Convergence of Information Technologies and Control Methods with Power Plants and Power Systems (2007)
Location: Technical University of Cluj-Napoca, Romania
Start Date: Mon Jul 09 2007 - End Date: Wed Jul 11 2007
Page Numbers: 15-15
|
|||
| Iterative feedback and learning control, servo systems applications | Preitl, Stefan; Precup, Radu-Emil; Preitl, Zsuzsa,... | 2007-07-09 |
|
|
Authors: Preitl, Stefan; Precup, Radu-Emil; Preitl, Zsuzsa; Vaivoda, Simona; Kilyeni, Stefan; Tar, Jozsef K.
Abstract: The paper presents aspects concerning two iterative methods in control design: the Iterative Feedback Tuning (IFT) and the Iterative Learning Control (ILC) approaches. The IFT is focused on a new generalized formulation that minimizes an objective function resulting in both controller and reference model tuning. The ILC is expressed as several structures including the original simplified norm-optimal ILC. The theoretical results are validated in case of PI controllers for servo systems with second-order integral type controlled plants and real-time experiments are included. The combination between IFT or ILC and fuzzy control is successful in applications leading to performance enhancement.
Keywords: iterative methods,servo systems,minimization,PI controllers,fuzzy control,power systems
Digital Object Identifier (DOI): 10.3182/20070709-3-RO-4910.00004
Conference: First IFAC Workshop on Convergence of Information Technologies and Control Methods with Power Plants and Power Systems (2007)
Location: Technical University of Cluj-Napoca, Romania
Start Date: Mon Jul 09 2007 - End Date: Wed Jul 11 2007
Page Numbers: 16-27
|
|||
| Reflections on the control of the operation modes of the national power system interconnected with the UCTE in the conditions of the electricity market | Vaida, Victor | 2007-07-09 |
|
|
Authors: Vaida, Victor
Abstract: The national power system operates interconnected with the UCTE in the conditions of the European electricity market. In order to meet the technical requirements of the UCTE standards and to be able to face the competition on the European electricity market, optimum operation modes of the national power network have to be achieved by means of a comprehensive control system and reliable equipment. On the occasion of the national power system rehabilitation, some state-of-the-art control systems have been implemented: Turbine Automatic Speed Controllers, generator AVRs, unit load controls etc., to control the main parameters of the national power system operation and to have the generation units qualified for providing system services.
Keywords: operation mode,optimum operation mode,automation,energy market,interconnected system,load control,system services
Digital Object Identifier (DOI): 10.3182/20070709-3-RO-4910.00005
Conference: First IFAC Workshop on Convergence of Information Technologies and Control Methods with Power Plants and Power Systems (2007)
Location: Technical University of Cluj-Napoca, Romania
Start Date: Mon Jul 09 2007 - End Date: Wed Jul 11 2007
Page Numbers: 28-36
|
|||
| SCADA on hydro power plant cascade—Case study | Stoian, Ioan; Stancel, Eugen; Capatina, Dorina,... | 2007-07-09 |
|
|
Authors: Stoian, Ioan; Stancel, Eugen; Capatina, Dorina; Ghiran, Ovidiu; Kovacs, Istvan; Sanislav, Teodora
Abstract: Based on our experience in SCADA systems within hydropower plants cascades on Somes and on Cris rivers (in Romania), this paper concludes a study of the implementations done, some of the arisen problems, results of the exploring using this system, and limits of the achievements. A comparison between the adopted solutions in concordance with the allocated budget and some future developments and improvements are also parts of this study. This paper is useful for conclusions regarding the implementation of the SCADA system in medium size power plants ageing more than 20- 30 years.
Keywords: hydro power,hydroelectric systems,SCADA,data acquisition,data processing,control system,case study
Digital Object Identifier (DOI): 10.3182/20070709-3-RO-4910.00006
Conference: First IFAC Workshop on Convergence of Information Technologies and Control Methods with Power Plants and Power Systems (2007)
Location: Technical University of Cluj-Napoca, Romania
Start Date: Mon Jul 09 2007 - End Date: Wed Jul 11 2007
Page Numbers: 38-43
|
|||
| Monitoring and control of hydro power plant | Vinatoru, Matei | 2007-07-09 |
|
|
Authors: Vinatoru, Matei
Abstract: In hydro power plants from Romania, there is a major interest for the implementation of digital systems for monitoring and control replacing the conventional control systems for power, frequency and voltage. Therefore is necessary to develop mathematical models capable to accurately describe both dynamic and stationary behaviour of the hydro units, in order to be able to implement digital control algorithms. Moreover, it is necessary to implement systems for monitoring and control of hydro power plants in a cascade system along a river, in order to optimize the use of the river resources. This paper presents the possibilities of modelling and simulation of the hydro power plants and performs an analysis of different control structures and algorithms.
Keywords: hydro power plant,control system,digital control algorithms
Digital Object Identifier (DOI): 10.3182/20070709-3-RO-4910.00007
Conference: First IFAC Workshop on Convergence of Information Technologies and Control Methods with Power Plants and Power Systems (2007)
Location: Technical University of Cluj-Napoca, Romania
Start Date: Mon Jul 09 2007 - End Date: Wed Jul 11 2007
Page Numbers: 44-55
|
|||
| On state feedback and observers for a class of delay discrete-time nonlinear systems | Bouazza, K. E.; Boutayeb, M.; Darouach, M. | 2007-07-09 |
|
|
Authors: Bouazza, K. E.; Boutayeb, M.; Darouach, M.
Abstract: In this paper, we consider the problem of bounded state feedback stabilization and observers design of a class of nonlinear discrete-time delay systems. From an appropriate Lyapunov function and judicious mathematical manipulations, we deduce a simple LMI conditions (that may be checked easily) to ensure asymptotic stability of both the state feedback and the observer. First, we provide an explicit bounded state feedback law that may seen as generalization of the existing results in the nonlinear field. On the other hand, we present a useful and systematic approach to design observers for discrete-time systems with unknown delay. To illustrate performances of the proposed approach, a numerical example is provided.
Keywords: nonlinear systems,time-delay systems,discrete systems,stabilization,bounded state feedback,observers design
Digital Object Identifier (DOI): 10.3182/20070709-3-RO-4910.00008
Conference: First IFAC Workshop on Convergence of Information Technologies and Control Methods with Power Plants and Power Systems (2007)
Location: Technical University of Cluj-Napoca, Romania
Start Date: Mon Jul 09 2007 - End Date: Wed Jul 11 2007
Page Numbers: 59-64
|
|||
| Pricing fuzzy models approach for decision-making in power systems electricity transactions | Dugan, Viorel; Solea, Razvan | 2007-07-09 |
|
|
Authors: Dugan, Viorel; Solea, Razvan
Abstract: The paper uses fuzzy set theory to obtain some fuzzy models which can be useful, each, as a decision - support to estimate an electrical energy (EE) price for consumers. In the same time, according to us, the paper can be a possible benchmark example of approximate reasoning, used as a fuzzy decision-support systems. All three fuzzy tariff models developed in fuzzy environment, Integrate some specific features of a deregulated electricity market, as in Romania in this transition period: i) in the market in only a single "seller", SC Electrica SA (SCESA), i.e. a single-supplier of electrical energy; ii) because of this, the consumers interests, beginning with 1999, are protected by the National Authority of Settlements from Energy (NASE) through some (social) compulsions; iii) the average price of EE ($/MWh) near our market place is, obviously a real problem (in our case the markets are from: Russia, Ukraine, Bulgaria, Hungary, Serbia and Moldavia). Not being a competitive environment, the normal practice used in NASE rules as method of EE pricing are average costs, i.e. total sales. The fuzzy method shows how it is possible to perform sensitivity tests on the EE price function model (by changing the parameters of SCESA and NASE), until can obtain an acceptable and true price can be obtained. In this aim, the three fuzzy models use different rules for pricing: canservative, aggressive, and different order of words concerning the rules, and finally doing a comparation among prices and models. Though the paper will not exhaust all fuzzy rules, doubtlessly, create a way of fuzzy reasoning as a modality to find an EE price.
Keywords: fuzzy rules,different fuzzy models,fuzzy reasoning decision-support,EE price estimation
Digital Object Identifier (DOI): 10.3182/20070709-3-RO-4910.00009
Conference: First IFAC Workshop on Convergence of Information Technologies and Control Methods with Power Plants and Power Systems (2007)
Location: Technical University of Cluj-Napoca, Romania
Start Date: Mon Jul 09 2007 - End Date: Wed Jul 11 2007
Page Numbers: 65-70
|
|||
| Ecological power system with local distribution DC-line for AC-drive consumers | Imecs, Maria; Incze, Ioan Iov; Szabo, Csaba | 2007-07-09 |
|
|
Authors: Imecs, Maria; Incze, Ioan Iov; Szabo, Csaba
Abstract: The paper deals with the simulation and implementation of AC-drives with synchronous and induction motors fed by a local distribution DC-line, which is supplied from an autonomous vector controlled synchronous generator. The main AC-grid is connected to DC-line the via ecological power electronic converters with bi-directional power flow, like the AC-drives and the generator. Solutions are proposed for sine-wave rectifying and inverting of the energy accomplishing grid-side unity power-factor with active power-filtering of the AC-grid- and motor-side currents for different transferred energy levels. The energy-efficiency of the drives is achieved by means of vector control structures.
Keywords: active filters,converters,pulse-width modulation,drives,ecology,electric power systems,induction motors,motor control,synchronous machines,simulation
Digital Object Identifier (DOI): 10.3182/20070709-3-RO-4910.00010
Conference: First IFAC Workshop on Convergence of Information Technologies and Control Methods with Power Plants and Power Systems (2007)
Location: Technical University of Cluj-Napoca, Romania
Start Date: Mon Jul 09 2007 - End Date: Wed Jul 11 2007
Page Numbers: 71-76
|
|||
| Fuzzy self-adapting PID control of drum water level in a power plant | Li, Xiao-Feng | 2007-07-09 |
|
|
Authors: Li, Xiao-Feng
Abstract: To improve the control quality of conventional PID controller used in complex control system, a new design strategy of fuzzy-PID controller is proposed. The tuning method based on the specified phase and gain margin is proposed to determine the parameters of the new fuzzy PID controller. Using fuzzy inference methods, the Fuzzy PID parameters can be adaptively adjusted on line for varying state of the system and changing operating condition. The strategy, which is implemented based on the Function Code on many typical Distributed Control System (DCS). The industrial application results show that many complex control system that uses this design strategy can effectively reduce the debugging time and has better control performance.
Keywords: fuzzy logic,self-adjusting,PID,autotuners,gain-scheduling,specifications on phase and gain margin (SPGM),DCS
Digital Object Identifier (DOI): 10.3182/20070709-3-RO-4910.00011
Conference: First IFAC Workshop on Convergence of Information Technologies and Control Methods with Power Plants and Power Systems (2007)
Location: Technical University of Cluj-Napoca, Romania
Start Date: Mon Jul 09 2007 - End Date: Wed Jul 11 2007
Page Numbers: 77-83
|
|||
| On the number of limit cycles for a dynamical system | Lungu, Nicolaie | 2007-07-09 |
|
|
Authors: Lungu, Nicolaie
Abstract: In this paper we consider a dynamical system in the case when it has one or more than one singular point. Such systems have been very widely studied and arise frequently in applications. The method is based on the properties of the successive function [5] Zhilevich.
Keywords: dynamical systems,limit cycles,Liénard system,Bendixon-Poincaré theorem
Digital Object Identifier (DOI): 10.3182/20070709-3-RO-4910.00012
Conference: First IFAC Workshop on Convergence of Information Technologies and Control Methods with Power Plants and Power Systems (2007)
Location: Technical University of Cluj-Napoca, Romania
Start Date: Mon Jul 09 2007 - End Date: Wed Jul 11 2007
Page Numbers: 84-86
|
|||
| New oscillatory instability assessment method with instantaneous measurement | Safaeian, M.; Karrari, M.; Shafiee, M.,... | 2007-07-09 |
|
|
Authors: Safaeian, M.; Karrari, M.; Shafiee, M.; Malik, O. P.
Abstract: For power system Oscillatory instability assessment, knowledge of Dominant eigenvalues and oscillatory mode of system is essential. In this paper, a new methods is suggested which uses acquired data from online measuring to determine dominant poles and analyze stability of system. Since general fault that occur in power system could be assumed as unknown step disturbance, in this method online measuring is used to develop a fully identified model of system in the case of undetermined disturbances and particularly unknown step inputs. This method was implemented on input-output extracted data from Simulated Iran power network Model with DIgSILENT software.
Keywords: ERA/DC,prony method,dynamic stability,instantaneous measurement,dominant eigenvalues
Digital Object Identifier (DOI): 10.3182/20070709-3-RO-4910.00013
Conference: First IFAC Workshop on Convergence of Information Technologies and Control Methods with Power Plants and Power Systems (2007)
Location: Technical University of Cluj-Napoca, Romania
Start Date: Mon Jul 09 2007 - End Date: Wed Jul 11 2007
Page Numbers: 87-92
|
|||
| A multi-agent home automation approach for power management | Abras, Shadi; Ploix, Stephane; Pesty, Sylvie,... | 2007-07-09 |
|
|
Authors: Abras, Shadi; Ploix, Stephane; Pesty, Sylvie; Jacomino, Mireille
Abstract: This paper presents the principles of a Home Automation System dedicated to power management that adapts power consumption to available power ressources according to inhabitant comfort and cost criteria. The system relies on a multiagent paradigm. Each agent supports a service achieved by several devices, it cooperates and coordinates its action with others in order to find an acceptable near-optimal solution. The control algorithm is decomposed into two complementary mechanisms: a reactive mechanism, which protects from constraint violations, and an anticipation mechanism, which computes a plan for global consumption according to predicted productions and consumptions and to inhabitant criteria. The paper shows how to compute a global consumption plan relying on Bellman-Ford's algorithm and how to reduce the problem complexity by dividing the whole problem into independent sub-problems.
Keywords: home automation system,multi-agent systems,automatic control,power management
Digital Object Identifier (DOI): 10.3182/20070709-3-RO-4910.00014
Conference: First IFAC Workshop on Convergence of Information Technologies and Control Methods with Power Plants and Power Systems (2007)
Location: Technical University of Cluj-Napoca, Romania
Start Date: Mon Jul 09 2007 - End Date: Wed Jul 11 2007
Page Numbers: 93-98
|
|||
| Modelling and control of a PSA reactor for hydrogen purification | Canevese, Silvia; De Marco, Antonio; Murrai, Davide,... | 2007-07-09 |
|
|
Authors: Canevese, Silvia; De Marco, Antonio; Murrai, Davide; Prandoni, Valter
Abstract: A first-principle dynamical model of a Pressure Swing Adsorption (PSA) reactor for hydrogen extraction from a gaseous mixture is presented. Then, a model for a whole fourreactor PSA unit, including the related valves and ducts, is introduced: this employs the single-reactor model and a global fluid-dynamical description; sequence control and continuous control are designed and some simulation results are discussed.
Keywords: mathematical models,process models,process automation,process control,process simulators,power generation
Digital Object Identifier (DOI): 10.3182/20070709-3-RO-4910.00015
Conference: First IFAC Workshop on Convergence of Information Technologies and Control Methods with Power Plants and Power Systems (2007)
Location: Technical University of Cluj-Napoca, Romania
Start Date: Mon Jul 09 2007 - End Date: Wed Jul 11 2007
Page Numbers: 99-104
|
|||
| Synchronous generator model identification using linear H∞ identification method | Dehghani, M.; Karrari, M.; Malik, O. P. | 2007-07-09 |
|
|
Authors: Dehghani, M.; Karrari, M.; Malik, O. P.
Abstract: Application of Linear H∞ identification method for identification of a synchronous generator is investigated in this paper. H∞ identification method is used to derive a robust model despite noise and system uncertainties. Such models are useful for robust control design in a predictive structure. The proposed identification method is applied on a seventh order model of a synchronous generator with saturation effect and is also tested on a physical machine. The field voltage is considered as the input and the active output power and the terminal voltage are considered as the outputs of the synchronous generator. Simulation and experimental results show good accuracy of the identified model.
Keywords: robust model,H∞ identification,linear model,power system modelling,synchronous generator
Digital Object Identifier (DOI): 10.3182/20070709-3-RO-4910.00016
Conference: First IFAC Workshop on Convergence of Information Technologies and Control Methods with Power Plants and Power Systems (2007)
Location: Technical University of Cluj-Napoca, Romania
Start Date: Mon Jul 09 2007 - End Date: Wed Jul 11 2007
Page Numbers: 105-110
|
|||
| Adaptive system identification of automotive power generation | Dobra, Petru; Duma, Radu; Dobra, Mirela,... | 2007-07-09 |
|
|
Authors: Dobra, Petru; Duma, Radu; Dobra, Mirela; Moga, Daniel
Abstract: The paper presents an adaptive system identification application using a Digital Signal Processor from Texas Instruments. The system to be identified is an automotive alternator. Experimental application illustrates the effectiveness and the simplicity of the proposed method. The application runs on a TMS320F2812 DSP. Once the desired functionality has been captured and simulated, using MATLAB/Simulink/Embedded Target for TI C2000 DSP environment can be generated code for the DSP. All task assignments to processor are automatically made by the software. Once the coefficients of a digital filter are calculated the mathematical model of the unknown system is determined.
Keywords: adaptive filters,adaptive algorithm,system identification,digital signal processor,digital filter,automotive control
Digital Object Identifier (DOI): 10.3182/20070709-3-RO-4910.00017
Conference: First IFAC Workshop on Convergence of Information Technologies and Control Methods with Power Plants and Power Systems (2007)
Location: Technical University of Cluj-Napoca, Romania
Start Date: Mon Jul 09 2007 - End Date: Wed Jul 11 2007
Page Numbers: 111-116
|
|||
| Simulation results regarding electrodes position controlling on electric Arc furnace | Panoiu, Manuela; Panoiu, Caius; Osaci, Mihaela,... | 2007-07-09 |
|
|
Authors: Panoiu, Manuela; Panoiu, Caius; Osaci, Mihaela; Iordan, Anca
Abstract: The electric arc furnaces are a very large power load, determining the negative effects on the power quality (harmonics currents, unbalanced load, and reactive power). For a maximum efficiency of the power consumption it is necessary to use an automat system of electrodes position control, in order to obtain a high value of power factor. In this paper are present the simulation results of the electrodes position control on an UHP Electric Arc Furnace in an industrial plants. For simulation it was use an electric arc model, depending on the nonlinearity of the electric arc. The modelling approach adopted in the paper is graphical, as opposed to mathematical models embedded in code using a high-level computer language. The well-developed graphic facilities available in an industry standard power system package, namely PSCAD-EMTDC, are used to conduct all aspects of model implementation and to carry out extensive simulation studies.
Keywords: power control,reactive power,electrodes position control
Digital Object Identifier (DOI): 10.3182/20070709-3-RO-4910.00018
Conference: First IFAC Workshop on Convergence of Information Technologies and Control Methods with Power Plants and Power Systems (2007)
Location: Technical University of Cluj-Napoca, Romania
Start Date: Mon Jul 09 2007 - End Date: Wed Jul 11 2007
Page Numbers: 117-122
|
|||
| Virtual reference feedback tuning approach to fuzzy control systems development | Precup, Radu-Emil; Preitl, Stefan; Burnham, Keith J.,... | 2007-07-09 |
|
|
Authors: Precup, Radu-Emil; Preitl, Stefan; Burnham, Keith J.; Vinsonneau, Benoit
Abstract: The paper proposes Takagi-Sugeno PI-fuzzy controllers (PI-FCs) dedicated to a class of integral plants. Two PI controllers are developed first by Virtual Reference Feedback Tuning to ensure the desired control system (CS) performance with respect to the reference input. Other two PI controllers are developed using the Extended Symmetrical Optimum method to ensure the desired maximum sensitivity equivalent to good CS performance with respect to the disturbance input. Then, accepting the approximate equivalence between the fuzzy controllers and the linear ones, a development method for the PI-FCs is suggested. Experimental results are included to illustrate the effectiveness of the development.
Keywords: servo systems,optimality,PI controllers,fuzzy control,speed control
Digital Object Identifier (DOI): 10.3182/20070709-3-RO-4910.00019
Conference: First IFAC Workshop on Convergence of Information Technologies and Control Methods with Power Plants and Power Systems (2007)
Location: Technical University of Cluj-Napoca, Romania
Start Date: Mon Jul 09 2007 - End Date: Wed Jul 11 2007
Page Numbers: 123-128
|
|||
| Modelling and numerical simulation examples of distributed parameters processes | Abrudean, Mihail; Dulf, Eva; Unguresan, Mihaela-Ligia | 2007-07-09 |
|
|
Authors: Abrudean, Mihail; Dulf, Eva; Unguresan, Mihaela-Ligia
Abstract: Continuing the papers (Abrudean et al., 2007), (Colosi et al., 2006), where the theoretical preliminaries of the definition and use of the Mpdx matrix are presented, associated to the Taylor series, for the modelling and numerical simulation of some categories of processes with distributed parameters from power systems, thermo-energetic, electro-energetic, chemical and electromechanical processes, etc, this paper presents a number of four examples. The advantages, the limits and the disadvantages of the method applied to these examples are being underlined.
Keywords: partial differential equation,state variables,numerical integration
Digital Object Identifier (DOI): 10.3182/20070709-3-RO-4910.00020
Conference: First IFAC Workshop on Convergence of Information Technologies and Control Methods with Power Plants and Power Systems (2007)
Location: Technical University of Cluj-Napoca, Romania
Start Date: Mon Jul 09 2007 - End Date: Wed Jul 11 2007
Page Numbers: 129-134
|
|||
| Implementation of a lighting control system based on fuzzy logic | Cziker, Andrei; Chindris, Mircea; Miron, Anca | 2007-07-09 |
|
|
Authors: Cziker, Andrei; Chindris, Mircea; Miron, Anca
Abstract: Classic control systems based on continuous dimming present some difficulties to adjust their performances to the rapid changes in daylight. Therefore, fuzzy control could be a better solution. The paper analyzes the possibility to implement this new technique in daylighting control and presents the structure of a fuzzy controller proposed by authors; its operation rules and the influence on the imposed value of the illuminance level are also studied.
Keywords: light,energy management system,fuzzy control
Digital Object Identifier (DOI): 10.3182/20070709-3-RO-4910.00021
Conference: First IFAC Workshop on Convergence of Information Technologies and Control Methods with Power Plants and Power Systems (2007)
Location: Technical University of Cluj-Napoca, Romania
Start Date: Mon Jul 09 2007 - End Date: Wed Jul 11 2007
Page Numbers: 135-140
|
|||
| Evolved fuzzy control system for a drum boiler | Andone, D.; Fagarasan, I.; Iliescu, S. St.,... | 2007-07-09 |
|
|
Authors: Andone, D.; Fagarasan, I.; Iliescu, S. St.; Hossu, A.
Abstract: Economic feasibility of a power plant requires smooth and uninterrupted plant operation in the face of varying electrical power demand. The feed-water system in a power plant is a major contributor to plant unavailability. The investigations about operation experiences of a power plant show that one of frequent causes of shutdowns is by violation of safety limits on the water level and is common at low operating power where the plant exhibits strong non-minimum phase characteristics. This paper presents a framework for addressing this problem based on a method of evolved control based on fuzzy model predictive control. Fuzzy model based fault detection methods are elaborated envisaging fault tolerant control. Results from validation of the evolved control system are presented. A new concept of modular evolved control system designed for a seamless and gradual integration into the existing distributed control system is proposed.
Keywords: fuzzy T-S model,predictive control,nonlinear system,fault detection,parity equation,drum boiler
Digital Object Identifier (DOI): 10.3182/20070709-3-RO-4910.00022
Conference: First IFAC Workshop on Convergence of Information Technologies and Control Methods with Power Plants and Power Systems (2007)
Location: Technical University of Cluj-Napoca, Romania
Start Date: Mon Jul 09 2007 - End Date: Wed Jul 11 2007
Page Numbers: 141-146
|
|||
| Reactive power compensation assessment using self-organizing feature map | Sarchiz, Dorin; Vasarhely, Istvan Sz. | 2007-07-09 |
|
|
Authors: Sarchiz, Dorin; Vasarhely, Istvan Sz.
Abstract: In the present work a self-organizing neural network is used for reactive power compensation assessment. The optimal reactive power sources planning are solved using a genetic algorithm. A genetic algorithm is proposed to optimize an objective function which is a linear combination of several factors, such as, overall system active power loss, cost incurred from the installation and use of VAR devices, enhance voltage profile. A self-organizing feature map is trained to compare the power system state once without optimization, then with optimization, first taking account of voltage constraints, and secondly without voltage constraints.
Keywords: genetic algorithm,self-organizing feature map,reactive power compensation
Digital Object Identifier (DOI): 10.3182/20070709-3-RO-4910.00023
Conference: First IFAC Workshop on Convergence of Information Technologies and Control Methods with Power Plants and Power Systems (2007)
Location: Technical University of Cluj-Napoca, Romania
Start Date: Mon Jul 09 2007 - End Date: Wed Jul 11 2007
Page Numbers: 147-152
|
|||
| Remote control system and real-time operation functions of hidro-power plants | Vladut, Gabriel; Cojocaru, Camelia; Rusta, Constantin,... | 2007-07-09 |
|
|
Authors: Vladut, Gabriel; Cojocaru, Camelia; Rusta, Constantin; Purcaru, Ion
Abstract: This paper proposes to realize a general solution for the remote control of a MHEPS; This solution has implemented by the authors at MHEPS-Cerna which belong to Hidroelectrica Targu-Jiu. It is necessary to administrate efficiently the hydro-energetic resources, decrease the cost of the energy and increase the running security.
Keywords: remote control,system,power,plants
Digital Object Identifier (DOI): 10.3182/20070709-3-RO-4910.00024
Conference: First IFAC Workshop on Convergence of Information Technologies and Control Methods with Power Plants and Power Systems (2007)
Location: Technical University of Cluj-Napoca, Romania
Start Date: Mon Jul 09 2007 - End Date: Wed Jul 11 2007
Page Numbers: 153-156
|
|||
