A5090362077- Magnetic confinement fusion research
- Superconducting Materials and Applications
- Power System Optimization and Stability
- Scientific Measurement and Uncertainty Evaluation
- Sensor Technology and Measurement Systems
- Fusion materials and technologies
- Particle accelerators and beam dynamics
- Advanced Electrical Measurement Techniques
- Ionosphere and magnetosphere dynamics
- Control Systems and Identification
- Magnetic Field Sensors Techniques
- Power Quality and Harmonics
- Probabilistic and Robust Engineering Design
- Fault Detection and Control Systems
- Water Systems and Optimization
- Electrical and Bioimpedance Tomography
- Smart Grid Security and Resilience
- Numerical methods in inverse problems
- Non-Destructive Testing Techniques
- Flow Measurement and Analysis
- Advanced Adaptive Filtering Techniques
- Laser-Plasma Interactions and Diagnostics
- Analog and Mixed-Signal Circuit Design
- Electromagnetic Compatibility and Noise Suppression
- Plasma Diagnostics and Applications
Politecnico di Milano
2012-2024
University of Milan
2006
Joint European Torus
1997
Power quality in LV distribution networks is already a concern many European countries especially where there strong presence of renewable energy generation. Therefore growing interest new solutions able to improve the power level such system. Among them, an interesting solution represented by open unified conditioner (Open UPQC) proposed within present work. The system consists single or three-phase ac/dc converter installed at customer's premises and main MV/LV substation. paper discusses...
by similar or dissimilar methodology now known hereafter developed is forbidden.
Throughout the last years, with liberalization of energy market, localization sources power quality disturbances has become a nodal point for operators and customers. In liberalized knowledge system status, along uncertainty affecting estimated data, is required to operate management control issues such as dispatching protection coordination. distribution systems, too many measurement instruments would be needed obtain complete observation electric quantities. Thus, model-based...
In power systems, knowledge of system state is required to operate management and control issues, such as energy dispatching protection coordination. The authors have recently proposed a novel procedure for harmonic source estimation, based on Bayesian approach, which aimed at giving distribution network operator information about the possible presence producing loads, along with an indication reliability information. Both measured (the real-time coming from field) priori information, their...
The continuous progress in magnetic sensor research provides increasing accuracy measurement systems based on arrays. Many industrial applications the field of protection for low-voltage electrical require novel technologies AC current sensors characterized by lower costs and wider measuring range amplitude frequency. For this purpose, a promising solution is utilization arrays provided with signal processing techniques. In paper, we propose new principle simultaneous polyphase currents...
In a liberalized electric market, the knowledge of system status is required to deal with management and control issues, such as energy dispatching protection coordination. this paper, procedure for harmonic source estimation aimed at giving distribution network operators information about possible presence producing loads, along an indication reliability information, studied in detail. The methodology exploits few real-time measurements existing systems all other available provide initial...
Power quality in distribution grids is already a concern many European Countries where there strong presence of renewable energy generation. There therefore growing interest new technologies able to improve the power level, among them Open Uninterruptible Quality Conditioner (Open UPQC). Despite several proposals have been analyzed literature, are still few examples experimentation real environments. The paper discusses design and simulation UPQC, focusing on its series component. This...
The paper represents power electronics device for PQ improvement and introduces Open UPQC as possible solution to improve whole system level with more features specific end users. It focuses on shunt unit analysis performance. Realization of prototype design consideration are analyzed in detail different operation modes the described.
Power quality in distribution networks is already a concern many European Countries where there strong presence of renewable energy generation. There therefore growing interest new technologies able to improve the power level. Among them, Open Uninterruptible Quality Conditioner (Open UPQC) possible solution. The system consists main three-phase AC/DC converter MV/LV substation, and some single-phase or installed at customer's premises. paper discusses design, simulation, implementation an...
Steady internal transport barriers (ITBs) are obtained in FTU at ITER-relevant magnetic field and density (ne0 ≥ 1.3 × 1020 m−3) almost full non-inductive discharges, sustained by lower hybrid (LH) electron cyclotron (EC) RF waves sources. Similarly to ITER, only electrons directly heated which turn heat ions via collisions no momentum is injected. Collisions do not affect the mechanisms of turbulence suppression energy transport. At highest densities ion thermal conductivity remains ≤ ohmic...
This paper introduces a novel Least Squares (LS) observer for the state estimation in power system under static conditions. The proposed estimator takes into consideration not only measurement uncertainty but also associated with all network parameters used load flow model of grid. A comparison classical weighted LS method is reported.
The control of rotating magnetic instabilities in a tokamak can be achieved by localized injection radio-frequency (RF) driven current. Real-time detection the radial location unstable "magnetic islands" and RF power deposition has been device designed, built, tested on FTU tokamak.
The evolution of the electrical energy system toward a smart model has already started. Smart metering, electric vehicles, renewable resources, transmission and distribution advanced grid automation are some example this ongoing change. A further step in process is interaction between final customers - often residential grid. Those shall provide new services to utility which can help them better more safely manage SmartDomoGrid project cofounded by Italian Ministry Economic Development aimed...
An important focus of the present research on thermonuclear fusion based magnetic confinement is control rotating islands low helical mode numbers m, n that are nonlinear stage resistive instabilities developing at surfaces where q = m/n. These perturbations often driven by external resonant 'error fields' or coupling effects and maintained local distortions current profile. The can be reduced in width completely suppressed a electron cyclotron waves accurately located within island. A...
The ISO guide for the expression of uncertainty requires statement measurement in terms expanded associated to a defined level confidence. This knowledge probability density function measured results. paper describes method estimation function, from which evaluate coverage factor predefined confidence, on basis higher-moment analysis various sources type A and B.
This paper presents the results of a novel Least Squares observer for state estimation in power system under static conditions. The estimator takes into consideration not only measurement uncertainty but also associated to network parameters used load flow model grid. A comparison with classical WLS method is reported.
In the last few years, growing complexity of electrical power networks, mainly due to increased use electronic converters together with requirements a higher level reliability and security, pushed development new techniques for state estimation systems. this paper, authors focus their attention on implementation experimental validation decentralized observer in an electric ship, whose network is characterized by fast dynamics presence many devices. The proposed solution implements...
In the present paper, effects of Phasor Measurement Unit (PMU) on Weighted Least Squares (WLS) State Estimation are investigated using a proposed approach whereas network parameters subjected to different amounts uncertainty. The is implemented and tested IEEE 14-Bus power test case. novelty this investigation lies behind consideration uncertainty for given measurement enables us observe how much PMU data impact state estimator's output by means estimates errors distribution versus It...
This paper presents the results of shaft voltages measurement campaign undertaken to investigate sources unrecoverable temperature drift observed on thrust bearing a small industrial steam turbine turbogenerator installed in cogeneration biomass thermal power station. The bandwidth voltage signal recorded and characteristic time evolution have pointed out electrostatic charges produced by as source voltage. study shown that this specific plant dangerous can settle case bad ground connection,...
Decentralized state estimation of power systems is under investigation for the monitoring modern systems. In this framework, identification sensor failure a critical issue. A novel method proposed here to achieve goal, yielding improved reliability decentralized system monitoring. Particularly, could be regarded as reliable uninterrupted system, in presence failures sensors. Sensor measurements are locally validated before they elaborated. The validation algorithm based on reasonable...
This paper investigates how the efficiency of Weighted Least Squares (WLS) State Estimation changes according to both uncertainty network parameters and measurements. Performance Estimator based mainly on accuracy its inputs it is very important for power system planners improve state estimation by determining whether invest increasing measurement preciseness or model. For this purpose, an algorithm simulation effects estimator proposed tested IEEE 14-Bus test case. The implementation...
This paper motivates, from historical, philosophical, and industrial points of view, the adoption a novel scheme for developing complex measuring systems as perceptive agencies. The general concept agency, cooperative multiagent system defined within distributed artificial intelligence robotics, is discussed together with its particular application to field intelligent instruments. An embryonic example agency applied environmental monitoring reported.