低圧配電網における分散型PV高比率化への最適経路

Unofficial AI-generated summary based on the public title and abstract. Not an official translation.

🔬研究者:Provides quantitative evidence on demand-side flexibility's impact on PV hosting capacity.

🏢実務担当者:Utilities and grid operators can use the flexibility quantification to plan demand response programs.

🏛政策担当者:Informs tariff design and grid planning policies to support distributed PV without compromising grid stability.

To limit global warming, the energy transition from fossil fuels to renewables is one of the main challenges of this century. This transition will help decrease our CO2 emissions, create jobs, contribute to a broader revenues distribution, improve energy system efficiency, bring electricity to developing countries and contribute to improving water quality, health care and education. It is made possible thanks to the steady decline of renewable energy costs in particular for photovoltaics (PV) whose electricity cost has decreased by a factor 5 during the last decade. This technology is now cost-effective at different scales of deployment, from GW size power plants to a few kW rooftop systems for prosumers. In Switzerland, due to the free land scarcity, distributed PV systems is one the pillar of the energy transition. However, low-voltage distribution networks were built with centralized generation in mind and were therefore not designed to accommodate a high level of distributed generation. The grid operation requires to maintain, at all time, a balance between consumption and production. An excess of PV energy could require significant curtailment of the generation to cope with the network operating constraints. This technical challenge affects PV system profitability and adoption rate, which is critical to achieving objectives in terms of PV capacity. Moreover, current electricity tariff does not guarantee sustainable revenue for grid operation in the event of an increase in distributed generation and raises issues of equity between consumers and prosumers. Demand-side management can be used to limit PV injection peaks and to reduce the mismatch between production and consumption. By disaggregating households electricity load profiles into appliance categories, we can quantify the share of flexible loads. The electricity consumption flexibility from the behavioural change could have the potential to increase by 20\% the PV hosting of a distribution grid. This measure by itself is not sufficient to achieve high ...

• base https://doi.org/10.5075/epfl-thesis-7760first seen 2026-09-01 12:07:38