A Strategy for Increasing SST's Efficiency at Low Load Operation

Kehler, Leandro B.; Kaminski, Antônio M.; Bemardon, Daniel P.; Rech, Cassiano; Marchesan, Tiago Bandeira

doi:10.1109/isgteurope.2018.8571557

Cited by 1 publication

(3 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The device with the highest value is the most beneficial alternative for the current use case. For the type and value of the properties, the KPIs presented in [2][3][4] can be used as bases. The next chapter deals with the value-benefit analysis from a grid technology perspective.…”

Section: Value-benefit-based Decision-making For Using Sstsmentioning

confidence: 99%

“…Various options are briefly presented below. The conventional power transfer between different voltage levels with the same frequency is realized by two-winding or, in some cases, even three-winding CPT, which are simple, robust, long-living, and cheap with high efficiency [2,3]. The turns ratio is fixed for medium-voltage (MV) to LV CPTs.…”

Section: Introductionmentioning

confidence: 99%

“…Also, advanced hybrid designs with integrated storage have been proposed [12]. Losses and efficiency of different types and topologies of transformers have been reviewed in the literature [2]. These transformers can also fulfil control, measurement, and communication functionalities.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Decision Process for Identifying Appropriate Devices for Power Transfer between Voltage Levels in Distribution Grids

Dyussembekova,

Schütt,

Leiße

et al. 2024

Energies

View full text Add to dashboard Cite

During the energy transition, new types of electrical equipment, especially power electronic devices, are proposed to increase the flexibility of electricity distribution grids. One type is the solid-state transformer (SST), which offers excellent possibilities to improve the voltage quality in electricity distribution grids and integrate hybrid AC/DC grids. This paper compares SST to conventional copper-based power transformers (CPT) with and without an on-load tap changer (OLTC) and with additional downstream converters. For this purpose, a corresponding electricity distribution grid is set up in the power system analysis tool DIgSILENT PowerFactory 2022. A DC generator like a photovoltaic system, a DC load like an electric vehicle fast charging station, and an AC load are connected. Based on load flow simulations, the four power transformers are compared concerning voltage stability during a generator-based and a load-based scenario. The results of load flow simulations show that SSTs are most valuable when additional generators and loads are to be connected to the infrastructure, which would overload the existing grid equipment. The efficiency of using SSTs also depends on the parameters of the electrical grid, especially the lengths of the low-voltage (LV) lines. In addition, a flowchart-based decision process is proposed to support the decision-making process for the appropriate power transformer from an electrical perspective. Beyond these electrical properties, an evaluation matrix lists other relevant criteria like characteristics of the installation site, noise level, expected lifetime, and economic criteria that must be considered.

show abstract

Section: Value-benefit-based Decision-making For Using Sstsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%