Sensitivity analysis for different calculation methods of simultaneity factors for charging infrastructure in low-voltage grids

Wintzek, Patrick; Ali, Shawki Alsayed; Riedlinger, Tobias; Düsterhus, P.; Zdrallek, Markus

doi:10.1049/icp.2022.0662

Cited by 2 publications

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“…The main advantages result from the simple handling of the modelling of new loads, such as private and public charging infrastructure, as well as the correspondingly short calculation time. Especially since a calculation using SFs and operation points analysis according to [24] leads to almost identical results than time-series in the context of load development.…”

Section: Methods Reflectionmentioning

confidence: 99%

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Development of a New Modelling Concept for Power Flow Calculations across Voltage Levels

Riedlinger,

Wintzek,

Zdrallek

2024

Electricity

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In the context of the energy transition, the share of new loads such as charging infrastructure for electromobility and electric heat pumps as well as feed-ins such as photovoltaic systems will steadily increase. This results in an increased degree of complexity for strategic network planning. In particular, the power flow analyses for the dimensioning of transformers and lines per network level currently still require different methods for the correct dimensioning of these equipment. They need to be carried out in separate data sets. For the dimensioning of the equipment simultaneity factors are predominantly used for realistic load assumptions in strategic network planning. These simultaneity factors and resulting load assumptions are determined from the planning perspective of the transformers and from the planning perspective of the lines per network level to be able to dimension the corresponding equipment. This results in different power flow results for the analysis and evaluation of different network levels in particular. This contribution presents a new concept for network modelling in which the simultaneity of the different planning perspectives of the different network levels results from a single power flow calculation in a coherent data set.

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Section: Methods Reflectionmentioning

confidence: 99%

“…For this purpose, different SFs are used for each technology. The SF is defined as the ratio of the maximum simultaneous consumption power to the sum of the maximum individual consumption power [24].…”

Section: Previous Modelling Conceptmentioning

confidence: 99%

Development of a New Modelling Concept for Power Flow Calculations across Voltage Levels

Riedlinger,

Wintzek,

Zdrallek

2024

Electricity

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Development of Demand Factors for Electric Car Charging Points for Varying Charging Powers and Area Types

2022

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With the increasing number of electric vehicles, the required charging infrastructure is increasing rapidly. The lack of historical data for the charging infrastructure compromises a challenge for distribution system operators to forecast the corresponding increase in the load demand. This challenge is characterised by two main uncertainties, namely, the charging power of the charging infrastructure and its location. Expectedly, the charging infrastructure is going to include varying charging powers and is going to be installed country-wide in different area types. Hence, this contribution sets to tackle these two uncertainties by developing demand factors for the charging infrastructure according to the area type. In order to develop the demand factors, a stochastic simulation tool for the charging profiles has been run for a simulation period of 5200 weeks (100 years) for six main charging powers and seven area types for up to 500 charging points. Thus, compromising a total of over 2.1 million simulated charging profiles. The resulting demand factor curves cover the charging powers between 3.7 kW and 350 kW with 1 kW steps for a total of 348 kW steps. Furthermore, they differ according to seven area types ranging from an urban metropolis to a rural village and are developed for up to 500 charging points. Consequently, the demand factor curves serve as a base to be used for the strategic grid planning of distribution power grids while taking the future development of the charging infrastructure into account.

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Sensitivity analysis for different calculation methods of simultaneity factors for charging infrastructure in low-voltage grids

Cited by 2 publications

References 0 publications

Development of a New Modelling Concept for Power Flow Calculations across Voltage Levels

Development of a New Modelling Concept for Power Flow Calculations across Voltage Levels

Development of Demand Factors for Electric Car Charging Points for Varying Charging Powers and Area Types

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