Simultaneity of PV-and windpower-generation from distribution grid perspective

Hammerschmidt, Torsten; Christ, Thomas; Gaul, Armin J.; Rehtanz, Christian

doi:10.1049/cp.2012.0843

Cited by 5 publications

(8 citation statements)

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“…Further overviews on current technologies for storage systems are presented in [6]- [8]. The usage of storage assets for the avoidance of grid extensions in distribution grids is discussed in [9] with a presentation of a biogas buffer balancing the feed-in of biogas and PV generation enabling a flattened feed-in profile and reduced feed-in peaks. The combination of two different types of storage technologies such as lead-acid and super-caps is presented in [10].…”

Section: Related Workmentioning

confidence: 99%

“…Hereby, the objective is on maximizing the profit caused by price spreads (arbitrage). The corresponding equation is given in (9) where is the spot market price in period . (9) We consider the prices for the day ahead market and the intraday market in two different scenarios leading to different transport and storage profiles and-consequently-to different correlations and peak behavior compared with the grid scenario of peak shaving.…”

Section: Optimization For Arbitrage Purposesmentioning

confidence: 99%

“…The corresponding equation is given in (9) where is the spot market price in period . (9) We consider the prices for the day ahead market and the intraday market in two different scenarios leading to different transport and storage profiles and-consequently-to different correlations and peak behavior compared with the grid scenario of peak shaving. The technical constraints for the flow in and out of the battery are again given by ( 1)- (6).…”

Section: Optimization For Arbitrage Purposesmentioning

confidence: 99%

See 2 more Smart Citations

Value of Storage in Distribution Grids—Competition or Cooperation of Stakeholders?

Nykamp

Bosman

Molderink

et al. 2013

IEEE Trans. Smart Grid

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The implementation of storage capacities in distribution grids is seen as an important element for the integration of fluctuating feed-in caused by photovoltaic and wind generators. However, the responsibility for the operating of these assets is not defined in most market designs. Since decreasing costs are to be expected with further market penetration, next to distribution grid operators (DSO) further storage stake holders may be interested in controlling local storage devices. In this paper optimal storage profiles for different stakeholders (DSO and energy traders) are derived based on a case study with real world data. The results reveal conflicting interests-peak shaving of fluctuating feed-in (objective o the DSO to avoid reinforcements) is hampered significantly by storage usage of trading companies (objective of exploiting price spreads in the spot market). It is shown that unreasonable high costs occur with undesired economical side-effects if no control or cooperation mechanism is implemented.

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Section: Related Workmentioning

confidence: 99%

Section: Optimization For Arbitrage Purposesmentioning

confidence: 99%

Section: Optimization For Arbitrage Purposesmentioning

confidence: 99%

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Value of Storage in Distribution Grids—Competition or Cooperation of Stakeholders?

Nykamp

Bosman

Molderink

et al. 2013

IEEE Trans. Smart Grid

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“…The generation by PV systems frequently fluctuates due to weather changes and is highly synchronous for spatially close systems often found in low-voltage grids [29]. In contrast, decreased voltages are caused by elevated power consumption, which is generally far less synchronized than elevated generation from spatially close PV systems [30]. Consequently, since larger voltage fluctuations are to be expected if voltages are above the nominal voltage, the upper criticality boundary includes a larger security margin.…”

Section: Critical Grid Situations and Criticality Boundariesmentioning

confidence: 99%

Strategies for an Adaptive Control System to Improve Power Grid Resilience with Smart Buildings

2021

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Low-voltage distribution grids face new challenges through the expansion of decentralized,renewable energy generation and the electrification of the heat and mobility sectors. We present amulti-agent system consisting of the energy management systems of smart buildings, a central gridcontroller, and the local controller of a transformer. It can coordinate the provision of ancillary servicesfor the local grid in a centralized way, coordinated by the central controller, and in a decentralizedway, where each building makes independent control decisions based on locally measurable data.The presented system and the different control strategies provide the foundation for a fully adaptivegrid control system we plan to implement in the future, which does not only provide resilienceagainst electricity outages but also against communication failures by appropriate switching ofstrategies. The decentralized strategy, meant to be used during communication failures, could alsobe used exclusively if communication infrastructure is generally unavailable. The strategies areevaluated in a simulated scenario designed to represent the most extreme load conditions that mightoccur in low-voltage grids in the future. In the tested scenario, they can substantially reduce voltagerange deviations, transformer temperatures, and line congestions.

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“…According to the studies mentioned in this subsection, advanced lead-acid batteries, NaS or Li-Ion batteries or flow batteries such as Zn-Air, Zn-Br and Vanadium redox batteries seem to be suitable for our application purpose (see more detailed in the discussion in Sector V). In [7] an example of a biogas buffer is presented. For this, the biogas produced in a biogas power plant is stored in case of a large contribution of feed-in out of PV generators and withdrawn and combusted to be converted to electricity in case of a lack of PV feed-in.…”

Section: B Storage Devices In Distribution Gridsmentioning

confidence: 99%

Storage operation for peak shaving of distributed PV and wind generation

Nykamp

Molderink

Hurink

et al. 2013

2013 IEEE PES Innovative Smart Grid Technologies Conference (ISGT)

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The integration of fluctuating power generation based on renewable energy systems (RES-E) in distribution grids require grid reinforcement resulting from high feed-in peaks. Introducing storage assets can decrease these peaks. For this, storage technologies need to be chosen and dimensioned according to the prevailing RES-E portfolio.In this paper characteristic parameters for storage devices, which are used for peak reductions of photovoltaic and wind generation, are derived. For this, real world data of generators located in a German distribution grid are used. An empirical relation between the peak to be reduced and the required capacity and the number of charging cycles is given enabling a discussion and choice of appropriate storage technologies. The achieved results show, that the parameters of the storage are influenced not only by the considered RES-E technology but also by the number of decentralized generators.

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Simultaneity of PV-and windpower-generation from distribution grid perspective

Cited by 5 publications

References 0 publications

Value of Storage in Distribution Grids—Competition or Cooperation of Stakeholders?

Value of Storage in Distribution Grids—Competition or Cooperation of Stakeholders?

Strategies for an Adaptive Control System to Improve Power Grid Resilience with Smart Buildings

Storage operation for peak shaving of distributed PV and wind generation

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