Renewable energy integration with mini/micro-grids

Yan, Jinyue; Zhai, Yongping; Wijayatunga, Priyantha; Mohamed, Abdul Matheen; Campana, Pietro Elia

doi:10.1016/j.apenergy.2017.05.160

Cited by 44 publications

(16 citation statements)

References 18 publications

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“…With the increase of renewable energy resources (RESs), such as distributed wind and solar generations, the operation of the distribution system is changing. Microgrid (MG), which can achieve energy management in a local area, is one of the promising approaches to accommodate the distributed RESs 1,2 . With the flexible characteristic, MGs with geographical adjacency can interconnect with each other and form the multi‐microgrid (MMG) system, and each MG can buy/sell power from/to the distribution system.…”

Section: Introductionmentioning

confidence: 99%

A multi‐timescale schedule strategy for multi‐microgrids: A distributed approach

Zhang

2021

Int Trans Electr Energ Syst

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Multi-microgrids (MMGs) interconnect microgirds (MGs) with geographical adjacency and improve the overall efficiency, stability, and reliability of a regional energy system. The uncertainty brought by renewable energy resources (RESs) is one of the challenges facing the schedule of MMGs. To cope with it, a multi-timescale schedule strategy is proposed. Specifically, in day-ahead schedule, the on/off states of the units are determined. Then, based on the day-ahead plan and the more accurate estimation of RESs, the refined schedule is achieved in the intraday. And to enhance the flexibility of the MMGs system, multienergy complementarity is considered in this work. Moreover, how to achieve the coordinated schedule between MGs owned by different parties is another problem facing the MMGs system operation. To solve this, a distributed algorithm, namely predictor corrector proximal multiplier, is introduced. During the solution process, each MG only needs to reveal the exchange power to the virtual controller, which protects the privacy and reduces communication burden. Numerical simulation of an MMGs system

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Section: Introductionmentioning

confidence: 99%

A multi‐timescale schedule strategy for multi‐microgrids: A distributed approach

Zhang

2021

Int Trans Electr Energ Syst

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“…Both academic literature and case studies point out the benefits of decentralized solutions for electricity generation (DER), including decongestion of the macrogrid [1] and improvements in reliability [2], resilience and power quality [3]. DER solutions such as microgrids (MGs) can be delivered using any combination of energy sources, but they can play a key role in the integration of renewable energy sources (RES) [4], which is why they are becoming particularly interesting in the development of new energy policies towards climate change mitigation [5], and in the conversations on smart cities [6], in particular at the level of the European Union (EU) [7].…”

Section: Introductionmentioning

confidence: 99%

A Cross-European Analysis of the Impact of Electricity Pricing on Battery Uptake in Residential Microgrids with Photovoltaic Units

Saviuc¹,

Milis²,

Peremans³

et al. 2020

J. sustain. dev. energy water environ. syst.

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As decentralized electricity generation is supporting grid development into the prosumer era, this paper investigates the economic viability of adding batteries to residential microgrids powered by photovoltaic units, under various electricity pricing schemes. Batteries bring the benefits of grid-stabilization and congestion relief, and they are also becoming cheaper. The problem identified is that the main grid effectively acts as a lossless storage system, especially under the net-metering scheme, whereas using a battery involves investment costs and energy losses. This mismatch is addressed by analysing residential microgrid projects under seven tariff designs, each in seven countries of the European Union, and compare the economic viability of photovoltaic systems with and without batteries. The findings show that the conditions most favourable to batteries are given by a capacity tariff scheme allowing price arbitrage. Based on these findings, the paper discusses possibilities for further support in order to bring the economic viability of microgrids with batteries on par with that of microgrids without batteries.

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“…Reports forecasting the development of electricity networks by 2050 point out that there will be increased decentralized energy generation in cities to help meeting climate change mitigation and decarbonization goals [1] and the growing demand for smart solutions and energy flexibility [2,3]. In the EU, Microgrids (MGs) exploit the full advantage of distributed energy resources [4], and at the same time their cost ranges are projected to further drop by 50-75% over the next 15 years [5]. In the anticipation of these developments the study of microgrids investment draws special attention.…”

Section: Introductionmentioning

confidence: 99%

Economic Performance of Using Batteries in European Residential Microgrids under the Net-Metering Scheme

et al. 2019

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Decentralized energy production offers an increased share of renewable energy and autonomy compared to the conventional, grid-only solution. However, under the net-metering scheme, the energy losses in batteries translate into financial losses to an investor seeking to move away from grid-only electricity and set up a residential PV+Battery microgrid. Our paper examines a hypothetical support scheme for such a project, designed to balance the economic disadvantage through partially supporting the acquisition of batteries, and thus ensure that the microgrid solution is more attractive than no investment. For this we develop four case studies based on experiments carried out in Greece, Italy, Denmark and Finland. Using the minimization of the Net Present Cost for each project, we compare the PV+Battery solution to the grid-only scenario over 25 years, for a range of electricity prices. The results illustrate first how the success of this project depends on the price of electricity. Second, we find that under current conditions in the respective countries the need for battery support varies between zero in Denmark and 86% in Italy, which reflects how the disadvantages of net metering can only be counterbalanced by either very high electricity price or very high solar resource. Our paper contributes thus to the discussion about the favourable environment for batteries in residential microgrids.

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Renewable energy integration with mini/micro-grids

Cited by 44 publications

References 18 publications

A multi‐timescale schedule strategy for multi‐microgrids: A distributed approach

A multi‐timescale schedule strategy for multi‐microgrids: A distributed approach

A Cross-European Analysis of the Impact of Electricity Pricing on Battery Uptake in Residential Microgrids with Photovoltaic Units

Economic Performance of Using Batteries in European Residential Microgrids under the Net-Metering Scheme

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