The programs Photovoltaic Power Systems (IEA PVPS) and Wind Energy Systems (IEA Wind) of the International Energy Agency (IEA) have issued updated guidelines on conducting system impact studies in energy systems with a high proportion of solar and wind energy.
IEA PVPS And IEA winds have updated their guidelines on conducting system impact studies of solar wind energy systems.
The “Recommended working methods for wind/PV integration studiesThe report deals with practical experiences and methodologies for designing and conducting integration studies. It is the third edition of the report, after a first publication in 2013 and an update in 2018.
It said that, since integration studies focus on future scenarios, these are an important part of the planning phase and are an integral part of achieving the objectives in the field of renewable energy, while also ensuring stable, reliable and economically viable energy systems.
The most important requirements for a wind/PV integration study, as set out in the report, include an objective (such as supporting policy decisions or understanding balancing needs), data on the ability, the energy system and wind/PV-related data, as well as Assumptions that influence results, such as connections with other energy sectors, fuel prices, taxes, CO2 rights and emission limits.
The research must include tasks such as performing production post simulations, performing analyzes of the adequacy of resources, performing simulations to guarantee power stability and determining a basic scenario for comparison. It must also be the uncertainty in synthetic data such as validating and quantifying weather data, analyze output data and present results. If the results are not feasible or show high costs, the report recommends reviewing the assumptions of scenarios.
The authors noted that some research components can be omitted based on the solar and wind energy shares. For lower shares, the study only needs to include the energy system that is operated on the basis of current practices, while for higher shares the reserve requirements and flexibility must be assessed. In systems that are dominated by solar and wind energy, the adequacy and stability of resources are crucial.
The report identified two important challenges for high shares of solar and wind energy: the balancing of system variability caused by fluctuations in both resources and tackling network stability problems as a result of the non-synchrone nature of the integration of solar and Wind energy.
The organizations stated that traditional research methods and models should be re -examined for energy systems dominated by solar and wind energy. Although the identified problems are mainly of a technical nature, the report emphasizes the need for economically feasible solutions and the right policy to tackle them.
“Market design is important to study for high wind and solar shares to stimulate exploitation Flexibility and adequacy of resources with repair of investment costs in systems with a lot of wind/PV Share, and to make effective use of wind/PV options possible for supporting the energy system (for example when it runs in limited mode), “according to the report. “An energy system dominated by wind and solar energy would also entail changes in the involvement of consumers.”
The authors stated that as the generation of solar and wind energy becomes more and more mainstream, this edition will be the last in which the emphasis will be placed on the integration of wind and solar energy. Future studies will focus on the design of general energy systems, whereby very high shares from solar and wind energy are taken into account.
IEA PVPS recently also released reports on this subject Main performance indicators For PV systems and the building-integrated photovoltaic (BIPV) market.
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