Flexibility in future power systems with high renewable penetration: A review

Alizadeh, Mohammad Iman; Moghaddam, Mohsen Parsa; Amjady, Nima; Siano, Pierluigi; Sheikh‐El‐Eslami, Mohammad Kazem

doi:10.1016/j.rser.2015.12.200

Cited by 315 publications

(117 citation statements)

References 29 publications

Supporting

Mentioning

117

Contrasting

Order By: Relevance

“…However, the key characteristics of renewable resources in terms of volatility, intermittency and uncertainty present great operational challenges for power systems. In particular, power system flexibility, defined as the capacity to respond to changes in load and generation, becomes critical for systems with large penetration of volatile resources [4]. Some authors show that the value of resources with volatility above a certain threshold can be diminished without proper flexibility capabilities [5], [6].…”

Section: Introductionmentioning

confidence: 99%

Real-Time Charging Strategies for an Electric Vehicle Aggregator to Provide Ancillary Services

Wenzel

Negrete-Pincetic

Olivares

et al. 2018

IEEE Trans. Smart Grid

123

View full text Add to dashboard Cite

Abstract-Real-time charging strategies, in the context of vehicle to grid (V2G) technology, are needed to enable the use of electric vehicle (EV) fleets batteries to provide ancillary services (AS). In this paper we develop tools to manage charging and discharging in a fleet to track an Automatic Generation Control (AGC) signal when aggregated. We propose a real-time controller that considers bidirectional charging efficiency and extend it to study the effect of looking ahead when implementing Model Predictive Control (MPC). Simulations show that the controller improves tracking error as compared with benchmark scheduling algorithms, as well as regulation capacity and battery cycling.

show abstract

Section: Introductionmentioning

confidence: 99%

Real-Time Charging Strategies for an Electric Vehicle Aggregator to Provide Ancillary Services

Wenzel

Negrete-Pincetic

Olivares

et al. 2018

IEEE Trans. Smart Grid

123

View full text Add to dashboard Cite

show abstract

“…There is a limit to how much renewables can be introduced in existing technological and institutional framework. There is no single value that corresponds to every country, because existing systems differ in each country, but it is indicated that there are no technical barriers for integration of renewable energy up to 35 % [6]. In case of Finland, it was calculated that renewable energy share could even be increased up to 70 % in the existing power production system [7].…”

Section: Introductionmentioning

confidence: 99%

Modelling energy production flexibility: system dynamics approach

et al. 2018

View full text Add to dashboard Cite

District heating networks are commonly addressed in the literature as one of the most effective solutions for decreasing the greenhouse gas emissions from the building sector. These systems require high investments which are returned through the heat sales. Due to the changed climate conditions and building renovation policies, heat demand in the future could decrease, prolonging the investment return period. The main scope of this paper is to assess the feasibility of using the heat demand -outdoor temperature function for heat demand forecast. The district of Alvalade, located in Lisbon (Portugal), was used as a case study. The district is consisted of 665 buildings that vary in both construction period and typology. Three weather scenarios (low, medium, high) and three district renovation scenarios were developed (shallow, intermediate, deep). To estimate the error, obtained heat demand values were compared with results from a dynamic heat demand model, previously developed and validated by the authors. The results showed that when only weather change is considered, the margin of error could be acceptable for some applications (the error in annual demand was lower than 20% for all weather scenarios considered). However, after introducing renovation scenarios, the error value increased up to 59.5% (depending on the weather and renovation scenarios combination considered). The value of slope coefficient increased on average within the range of 3.8% up to 8% per decade, that corresponds to the decrease in the number of heating hours of 22-139h during the heating season (depending on the combination of weather and renovation scenarios considered). On the other hand, function intercept increased for 7.8-12.7% per decade (depending on the coupled scenarios). The values suggested could be used to modify the function parameters for the scenarios considered, and improve the accuracy of heat demand estimations. AbstractArticle shows how system dynamics modelling (SDM) approach could be used in modelling the energy transition towards low carbon energy system. SDM can be used to combine the techno-economic and socio-technical analysis. The study considers flexibility issues related to integration of renewable energy sources. Simplified model structure is made to illustrate how flexibility as well as other socio-technical aspects might be modelled. Results of the model correspond to the behavior anticipated from the model structure. Namely, model imitates effects of technological disruption which rises the limits of intermittent power production from renewable sources which can be integrated into power system. The limits are increased stepwise, as a share of intermittent power production reaches certain threshold value, resulting in sequence of S-shaped growth. This study presents flexibility increase of a power system conceptually and more detailed study should uncover leverage points which could stimulate this increase and thus, transition to sustainable energy system. AbstractArticle shows how system dynamic...

show abstract

“…The performance of each storage technology differs depending on its physical mechanisms, materials, and constitutions. Conventional batteries and flywheels are efficient and have a certain cost advantage over other technologies; however, their storage potential is limited . Pumped hydro and compressed air energy storage are both in the stage of commercialized operation depending on the specific locations.…”

Section: Introductionmentioning

confidence: 99%

Optimizing unit capacities for a wind-hydrogen power system of clustered wind farms

Jiang

Bu-ying

Wang

2018

Int Trans Electr Energ Syst

View full text Add to dashboard Cite

Summary In general, wind power output of clustering wind farms must be massively transmitted. The wind power in each wind farm is correlated, intermittent, fluctuant, and cannot be accommodated all the time, causing the intractable decision of economical transmission capacity of a project transmitting wind power to a power grid. Furthermore, the drastic fluctuation of clustered wind power results in enormous challenges regarding the safety of a power system. For these reasons, the concept of a wind‐hydrogen power system for clustered wind farms is proposed. Next, a multiobjective model for optimizing the capacities, including the transmission project, hydrogen‐producing system, and fuel cells, is constructed based on the joint distributed character of wind speed, which consists of maximizing social benefit and the qualified rate of smoothing clustering wind power fluctuations. Finally, a case is analyzed in detail, accounting for the wind volatility, wind curtailment probability, and the costs of both hydrogen production and the fuel cells.

show abstract

Flexibility in future power systems with high renewable penetration: A review

Cited by 315 publications

References 29 publications

Real-Time Charging Strategies for an Electric Vehicle Aggregator to Provide Ancillary Services

Real-Time Charging Strategies for an Electric Vehicle Aggregator to Provide Ancillary Services

Modelling energy production flexibility: system dynamics approach

Optimizing unit capacities for a wind-hydrogen power system of clustered wind farms

Contact Info

Product

Resources

About