An Effective SSC Control Scheme for Voltage Sag Compensation

Delfino, B.; Fornari, F.; Procopio, Renato

doi:10.1109/tpwrd.2005.848762

Cited by 32 publications

(13 citation statements)

References 7 publications

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“…The ideal value of these indexes is also indicated. Other disturbances also affect the power quality of microgrids, including harmonics, flickers and DC current injection [32][33][34]. They are not taken into account in this study, which focusses only on the disturbances caused by voltage sags.…”

Section: Power Quality Indexesmentioning

confidence: 99%

Performance Comparison of Grid-Faulty Control Schemes for Inverter-Based Industrial Microgrids

Camacho

Castilla

Canziani³

et al. 2017

Energies

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Several control schemes specifically designed to operate inverter-based industrial microgrids during voltage sags have been recently proposed. This paper first classifies these control schemes in three categories and then performs a comparative analysis of them. Representative control schemes of each category are selected, described and used to identify the main features and performance of the considered category. The comparison is based on the evaluation of several indexes, which measure the power quality of the installation and utility grid during voltage sags, including voltage regulation, reactive current injection and transient response. The paper includes selected simulation results from a 500 kVA industrial microgrid to validate the expected features of the considered control schemes. Finally, in view of the obtained results, the paper proposes an alternative solution to cope with voltage sags, which includes the use of a static compensator in parallel with the microgrid. The novelty of this proposal is the suitable selection of the control schemes for both the microgrid and the static compensator. The superior performance of the proposal is confirmed by the analysis of the quality indexes. Its practical limitations are also revealed, showing that the topic studied in this paper is still open for further research.

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Section: Power Quality Indexesmentioning

confidence: 99%

Performance Comparison of Grid-Faulty Control Schemes for Inverter-Based Industrial Microgrids

Camacho

Castilla

Canziani³

et al. 2017

Energies

View full text Add to dashboard Cite

show abstract

“…The strong presence of power electronic devices in renewable energy sources (RES) like photovoltaic or wind power plants makes them suitable and flexible enough to act as supporters for the electricity system operation [6,7], as they can provide some of the ancillary services that in the past needed the installation of dedicated devices [8,9]. For these reasons, numerous grid code requirements of various electricity system operators all over the world are beginning to require large renewable plants to act as providers of ancillary services.…”

Section: Introductionmentioning

confidence: 99%

Modeling and Maximum Power Point Tracking Control of Wind Generating Units Equipped with Permanent Magnet Synchronous Generators in Presence of Losses

et al. 2017

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This paper focuses on the modeling of wind turbines equipped with direct drive permanent magnet synchronous generators for fundamental frequency power system simulations. Specifically, a procedure accounting for the system active power losses to initialize the simulation starting from the load flow results is proposed. Moreover, some analytical assessments are detailed on typical control schemes for fully rated wind turbine generators, thereby highlighting how active power losses play a fundamental role in the effectiveness of the wind generator control algorithm. Finally, the paper proposes analytical criteria to design the structure and the parameters of the regulators of the wind generator control scheme. Simulations performed with Digsilent Power Factory validated the proposed procedure, highlighting the impact of active power losses on the characterization of the initial steady state and that the simplifying assumptions done in order to synthesize the controllers are consistent with the complete modeling performed by the aforementioned power system simulator.

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“…The integration of RES is one of the most important and challenging aspects that researchers are facing in order to obtain a stable and reliable operation of the power grid, as the increasing number of wind and photovoltaic power plants is decreasing the inertia of the power system [4][5][6]. MGs can easily integrate RES into the electric network, guaranteeing an optimized management, both from the economic and the environmental point of view, and a higher level of power quality [7,8]. Moreover, if an MG is capable of working in an islanded configuration and to seamlessly transit from an islanded to grid-connected form, and The paper is organized as follows: Section 2 briefly presents the SPM layout while Section 3 describes its main elements; Section 4 derives the simplified model, highlighting the main assumptions it relies upon.…”

Section: Introductionmentioning

confidence: 99%

A Simplified Microgrid Model for the Validation of Islanded Control Logics

et al. 2017

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Microgrids (MGs) may represent a solution in the near future to many problems in the energy and electric world scenarios; such as pollution, high reliability, efficiency and so on. In particular, MGs' capability to work in an islanded configuration represents one of their most interesting features in terms of the improvement of the reliability of the system, the integration of renewable energy sources and the exploitation of the quick response and flexibility of power electronic devices in a stand-alone system. In order to study and validate innovative solutions and control strategies for islanded operation, there is a need to develop models for MG structures that can be reliable and sufficiently simple to be used for the purpose of the design and validation of innovative control systems. This paper proposes a simplified, first harmonic model for a generic structure of MG characterized by its use of only electronic power converter interfaced generation. The main advantages of the proposed method lie in the model's simplicity and its reduced solving time, thanks to the limited number of necessary parameters to describe the system. Moreover, the developed formulation allows the avoidance of specific (and often licensed) software to simulate the system. The performances of the proposed model have been validated by means of a comparative analysis of the results obtained against a more accurate representation of the system performed in the power system CAD-electromagnetic transient and DC (PSCAD-EMTDC) environment, which allows for the representation of each component with a very high level of detail. Such comparison has been performed using the University of Genoa Savona Campus Smart Polygeneration Microgrid testbed facility, due to the availability of all the necessary numerical values.

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An Effective SSC Control Scheme for Voltage Sag Compensation

Cited by 32 publications

References 7 publications

Performance Comparison of Grid-Faulty Control Schemes for Inverter-Based Industrial Microgrids

Performance Comparison of Grid-Faulty Control Schemes for Inverter-Based Industrial Microgrids

Modeling and Maximum Power Point Tracking Control of Wind Generating Units Equipped with Permanent Magnet Synchronous Generators in Presence of Losses

A Simplified Microgrid Model for the Validation of Islanded Control Logics

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