A5009338763- Microgrid Control and Optimization
- Power System Optimization and Stability
- Islanding Detection in Power Systems
- Optimal Power Flow Distribution
- Smart Grid Energy Management
- Power Systems Fault Detection
- HVDC Systems and Fault Protection
- Power Systems and Renewable Energy
- Advanced Battery Technologies Research
- Real-time simulation and control systems
- Electric Vehicles and Infrastructure
- Lightning and Electromagnetic Phenomena
- Sensorless Control of Electric Motors
- Energy and Environment Impacts
- Low-power high-performance VLSI design
- Energy Load and Power Forecasting
- Wind Turbine Control Systems
- Power Systems and Technologies
- Electrical Fault Detection and Protection
- Power Quality and Harmonics
- Vibration and Dynamic Analysis
- Smart Grid Security and Resilience
- Computational Physics and Python Applications
- Power Line Communications and Noise
- Numerical methods for differential equations
Universidade Federal de São Carlos
2023-2024
Universidade Estadual do Oeste do Paraná
2012-2023
Itaipu Binacional
2018-2022
Park Foundation
2020
Universidade de São Paulo
2014
This paper summarizes a set of six benchmark systems for the analysis and control electromechanical oscillations in power systems, recommended by IEEE Task Force on Benchmark Systems Stability Controls Power System Dynamic Performance Committee. The were chosen their tutorial value particular characteristics leading to system design problems relevant research community. For each benchmark, modeling guidelines are provided, along with eigenvalues time-domain results produced at least two...
The possibility of operating distributed generation (DG) in islanded mode brings several benefits but still faces some problems, especially related to the transition from a grid-connected an condition. When connected main grid, DG units operate PQ mode. During this transition, their controls must be changed regulate frequency and voltage. delay for islanding detection, associated with abrupt changes control references, may result large detrimental transients. This paper proposes new...
Currently, a worldwide tendency of decentralization electric energy production (called Distributed Generation) is observed, where small generators - sometimes composed by synchronous machines are connected mainly to distribution grids. Due the intrinsic characteristic load imbalance between phases in these systems, there series questions about operation and its respective control loops. Some related impact over actuation limiters excitation systems generators. In this context, paper presents...
In this review paper, CIGRÉ's definition of microgrids was adopted. Their main relevant technologies are discussed (distributed generators, energy storage systems and others). Some points in architecture also briefly considered. order to provide the reader with a clear picture, five representative were selected described. Finally, topic microgrid HIL simulation is addressed. A comprehensive literature used work.
The need to improve the continuity supply indexes has encouraged practice of operating distributed generation in islanded mode. However, one main issues for this operation mode is transition operation, which requires changing control objectives maintain voltage and frequency at acceptable levels. In context, paper aims analyze performance a well-known islanding passive detection scheme change enable stand-alone case loss grid. used based on rate relay, considered effective, easy implement...
The increase of distributed generation in a worldwide level, combined with its characteristic operating under load imbalance between phases, motivated the study various aspects operation, such as analysis possible low-frequency oscillations and penetration level that meets minimum energy quality criteria. Among features deserve careful scrutiny, there is investigation synchronous generator dynamics severe conditions, including relevant dynamic associated to control loops. In this context,...
The high penetration of distributed renewable energy resources in power systems has changed their dynamic behavior, not only at the distribution level but also transmission levels. For analyses performed this new reality interconnected systems, a suitable equivalent model is required to represent active dynamics systems. In context, paper proposes application gray-box method obtain an appropriate for networks. From data measured point common coupling, trajectory sensitivity analysis carried...
This paper presents a SoC-sharing function for management of bidirectional electric station in the microgrids context. The algorithm proposed this is able to execute fast or slow charges and discharges Electrical Vehicle (EV) battery according State Charge (SoC) availability. Thus, through Cascaded Interleaved Buck-Boost Converter, will also regulate DC link voltage. A study model, control structure technique presented. Finally, series stand-alone simulations validate by using PSIM <sup...
Traditionally, due the high effort involved in simulation of power systems electromechanical transients, this simulations is carried out so-called phasor model approach. This approach considers de following main simplifications: equal distribution loads among phases, representation elements by lumped and identical parameters all invariance with respect to frequency, sinusoidal quantities phasors system its one-line diagram. These assumptions are valid for bulk because utilities do their best...
This paper shows a relation between undervoltage protection requirements of Distributed Generation (DG) units and the short-term voltage stability corresponding bulk power system, highlighting that former may have significant impact on latter. The discussion this relation, as well proposal procedure to avoid potentially unstable systemic behavior due it, are main contributions paper. Based simplified model distribution systems, explains mechanism by which highly restrictive settings result...
Due to the increasing penetration of distributed energy resources, Brazilian distribution grid code has been modified specify how integration between these elements and should be carried out. Some modifications aim expand operational capabilities, including provision ancillary services grid, for example. This paper explores this context, specifically, in relation one such service that resources can offer which is minimization voltage sags. In pursuit offering an efficient control method...
Due to the trend of integration dispersed generation into electrical systems, in many countries it is possible find synchronous generators directly connected Distribution Power Systems (DPS). The Distributed Synchronous Generation (DSG) often employs an additional control loop its excitation system: Factor controller (PFC). objective PFC maintain power factor at terminal bus DSG close one, so can inject mostly active utility grid. However, little known about performance under unbalanced...
It becomes essential for Brazil the formation of critical mass and technological base in microgrid subject and, mainly, creation an infrastructure that allows accomplishment research this area knowledge. Faced with necessity, it was verified viability implementing a laboratory to perform analysis microgrids systems actual premises Laboratory Automation Simulation Electrical Systems, which is allocated Itaipu Technological Park Foundation - dependencies. In presented context, work brings...
The possibility of operating distributed generation (DG) in islanded mode brings several benefits but still faces some problems, especially related to the transition from a grid-connected an condition. When connected main grid, DG units operate PQ mode. During this transition, their controls must be changed regulate frequency and voltage. delay for islanding detection, associated with abrupt changes control references, may result large detrimental transients. This paper proposes new...