Improved low voltage grid-integration of photovoltaic systems in Germany

Stetz, Thomas A.; Marten, Frank; Braun, Martin

doi:10.1109/pesmg.2013.6672092

Cited by 50 publications

(61 citation statements)

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“…Researchers already have investigated the impacts of DG on the distribution grid [6][7][8][9][10]. Besides feed-in control strategies for DG [11], grid-balancing measures have also been investigated. Demand side management (DSM) is being discussed as a promising approach for grid balancing [12,13], as it changes electricity demand of consumers with respect to the time pattern of consumption and/or load magnitude [14].…”

Section: Introductionmentioning

confidence: 99%

Battery Storage Systems as Grid-Balancing Measure in Low-Voltage Distribution Grids with Distributed Generation

et al. 2017

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Due to the promoted integration of renewable sources, a further growth of strongly transient, distributed generation is expected. Thus, the existing electrical grid may reach its physical limits. To counteract this, and to fully exploit the viable potential of renewables, grid-balancing measures are crucial. In this work, battery storage systems are embedded in a grid simulation to evaluate their potential for grid balancing. The overall setup is based on a real, low-voltage distribution grid topology, real smart meter household load profiles, and real photovoltaics load data. An autonomous optimization routine, driven by a one-way communicated incentive, determines the prospective battery operation mode. Different battery positions and incentives are compared to evaluate their impact. The configurations incorporate a baseline simulation without storage, a single, central battery storage or multiple, distributed battery storages which together have the same power and capacity. The incentives address either market conditions, grid balancing, optimal photovoltaic utilization, load shifting, or self-consumption. Simulations show that grid-balancing incentives result in lowest peak-to-average power ratios, while maintaining negligible voltage changes in comparison to a reference case. Incentives reflecting market conditions for electricity generation, such as real-time pricing, negatively influence the power quality, especially with respect to the peak-to-average power ratio. A central, feed-in-tied storage performs better in terms of minimizing the voltage drop/rise and shows lower distribution losses, while distributed storages attached at nodes with electricity generation by photovoltaics achieve lower peak-to-average power ratios.

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Section: Introductionmentioning

confidence: 99%

Battery Storage Systems as Grid-Balancing Measure in Low-Voltage Distribution Grids with Distributed Generation

et al. 2017

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“…Fuente: (Stetz, Marten, & Braun, 2013 todo el año y, por tanto, provoca relativamente menos problemas de integración a la red que los sistemas fotovoltaicos instalados en los países del norte de Europa (Cossent, Gómez, & Olmos, 2011).…”

Section: Estrategia Estatus De La Implementaciónunclassified

Aplicación de los sistemas fotovoltaicos conectados a la red: estado del arte

Mora

Borray

Cañola³

et al. 2014

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. (2014). Aplicación de los sistemas fotovoltaicos conectados a la red: estado del arte. Revista Tecnura, Edición especial, 157-172. ResumenEn este trabajo se describen todos los conceptos necesarios para lograr implementar un sistema fotovoltaico como alternativa para ser utilizado como generador distribuido. Para ello, se realiza un pequeño estado del arte en el cual se manejan conceptos básicos, desde el funcionamiento de una celda solar hasta conceptos de redes inteligentes aplicados en la gestión de la demanda. Asimismo, se abarca un repaso sobre los marcos regulatorios existentes en Colombia, donde se habla de generación distribuida debido a la falta del mismo. Es necesario comparar tales regulaciones con los diferentes marcos regulatorios existentes en otros países, como Alemania, España y EE.UU., para obtener un modelo de trabajo idóneo. Finalmente, se decide utilizar un generador fotovoltaico conectado a la red de baja tensión como alternativa en los sistemas de generación distribuida, ya que con estos se pueden realizar balances energéticos, esto en caso de que en el país en donde se emplee esta alternativa no se tenga establecido un marco regulatorio adecuado, de manera que el usuario no tenga problemas con las entidades regulatorias actuales. Palabras clave: balance energético, energías renovables, generación distribuida, gestión de la demanda, sistemas fotovoltaicos. AbstractThis paper outlines all necessary concepts to successfully implement a photovoltaic system as an alternative in a distributed generation scheme. For this purpose, it is made a short state of the art in which basic concepts are addressed, from a solar cell operation to smart grid concepts applied on demand management. Likewise, a review of the different regulatory frameworks in Colombia is entailed, especially those related to distributed generation, due to the lack of these ones. It is necessary to make a comparison with other regulations from other countries,

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“…Violation of these limits can cause problems for sensitive consuming and generating facilities [4]. Hence, both over-and under-voltage issues can create major obstacles for penetration of renewable energy generation in future distribution networks [5]. Normally, the unbalance between the load and generation at any period is the main cause of the issues [6].…”

Section: Introductionmentioning

confidence: 99%

Optimal Cooperative Management of Energy Storage Systems to Deal with Over- and Under-Voltages

et al. 2017

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This paper presents an optimal cooperative voltage control approach, which coordinates storage units in a distribution network. This technique is developed for storage systems' active power management with a local strategy to provide robust voltage control and a distributed strategy to deliver optimal storage utilization. Accordingly, three control criteria based on predefined node voltage limits are used for network operation including normal, over-voltage, and under-voltage control modes. The contribution of storage units for voltage support is determined using the control modes and the coordination strategies proposed in this paper. This technique is evaluated in two case studies to assess its capability.

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Improved low voltage grid-integration of photovoltaic systems in Germany

Cited by 50 publications

References 0 publications

Battery Storage Systems as Grid-Balancing Measure in Low-Voltage Distribution Grids with Distributed Generation

Battery Storage Systems as Grid-Balancing Measure in Low-Voltage Distribution Grids with Distributed Generation

Aplicación de los sistemas fotovoltaicos conectados a la red: estado del arte

Optimal Cooperative Management of Energy Storage Systems to Deal with Over- and Under-Voltages

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