Process and Modelling of Renewable and Sustainable Energy Sources

A special issue of Processes (ISSN 2227-9717). This special issue belongs to the section "Energy Systems".

Deadline for manuscript submissions: closed (15 September 2024) | Viewed by 4678

Special Issue Editors


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Guest Editor
Laboratory of Low Carbon Energy, Tsinghua University, Beijing 100084, China
Interests: power system planning; renewable energy integration; energy policy; electrical power engineering; power engineering; power systems modelling; renewable energy; electrical engineering
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Guest Editor
Institute of Climate Change and Sustainable Development, Tsinghua University, Beijing 100084, China
Interests: energy system modeling; carbon footprint analysis; EVs and hydrogen

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Guest Editor
Institute of Low-carbon Urban Energy Systems, Sichuan Energy Internet Research Institute Tsinghua University, Chengdu 610213, China
Interests: power system operation; carbon emission measuring; Energy storage
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The low-carbon transition of power systems plays a vital role in achieving the carbon neutrality target, as it takes an essential position in carbon emission. To achieve the low-carbon transition, renewable and sustainable energy has experienced rapid progress, and this developing trend will continue in the next few decades. However, due to the intermittence and uncertainty of renewable energy, the rapid growth of renewable and sustainable energy brings great challenges to power system safety and reliability. Therefore, the research on renewable and sustainable energy sources modelling and the investigation into the process of renewable energy integration are gaining attention. 

The researchers and practitioners have made great efforts in finding effective ways to achieve power system low-carbon transitions through renewable and sustainable energy integration. However, there remains still a long journey for us to fill the gap between theory and practice. Thus, to further disseminate the methods in this area, we want to organise a Special Issue discussing the “Process and Modelling of Renewable and Sustainable Energy Sources”.

This Special Issue on “Process and Modelling of Renewable and Sustainable Energy Sources” aims to cover recent advances in the modelling, analysis, and optimisation of renewable energy and the power system with a high proportion being renewable. Topics include, but are not limited to, methods and/or the application in the following areas:

  • Modelling of renewable and sustainable energy.
  • Analysis of the integration process of renewable.
  • Low-carbon operation of power systems.
  • Power system planning towards the low-carbon
  • Carbon reduction method for the power system.

Dr. Ershun Du
Dr. Tianduo Peng
Dr. Yaowang Li
Guest Editors

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Keywords

  • renewable and sustainable energy
  • power system
  • modelling
  • process analysis
  • optimisation
  • low-carbon transistion

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Published Papers (3 papers)

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Research

20 pages, 6206 KiB  
Article
Multi-Timescale Reactive Power Optimization and Regulation Method for Distribution Networks Under a Multi-Source Interaction Environment
by Hanying Zhou, Junyu Liang, Xiao Du and Mengtong Wu
Processes 2024, 12(10), 2254; https://doi.org/10.3390/pr12102254 - 15 Oct 2024
Viewed by 530
Abstract
In the context of constructing new power systems, distribution networks are increasingly incorporating distributed resources such as distributed photovoltaic (PV) systems, decentralized wind turbines (WTs), and new types of energy storage system (ESS), which may lead to prominent issues such as voltage overruns [...] Read more.
In the context of constructing new power systems, distribution networks are increasingly incorporating distributed resources such as distributed photovoltaic (PV) systems, decentralized wind turbines (WTs), and new types of energy storage system (ESS), which may lead to prominent issues such as voltage overruns and reverse heavy overloads in the distribution network. While distributed resources are valuable for voltage regulation, their regulation characteristics vary with their operation means, and the randomness and volatility of renewable power generation will also influence the optimization and regulation of voltage in the distribution network. This paper proposes a multi-timescale reactive power optimization and regulation method for distribution networks in a multi-source interactive environment. Firstly, the voltage regulation characteristics of distributed PV systems, decentralized ESSs, and distributed WTs are analyzed. Based on this analysis, a multi-timescale voltage optimization scheme for distribution networks using the MPC method is proposed, which optimizes the voltage regulation strategies for each distributed resource in a rolling manner. Furthermore, an event-triggered real-time voltage zoning control strategy based on voltage sensitivity is proposed to address the real-time sudden voltage overlimit problems. The modified IEEE 33-node system is used to verify the performance of the proposed method. Simulation results indicate that the issue of voltage overruns at distribution network nodes has been improved, and the intraday rolling optimization yields results are more realistic compared with the day-ahead optimization method. Full article
(This article belongs to the Special Issue Process and Modelling of Renewable and Sustainable Energy Sources)
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13 pages, 7654 KiB  
Article
Effects of the Nozzle Configuration with and without an Internal Guide Vane on the Efficiency in Cross-Flow Small Hydro Turbines
by Fredys Romero-Menco, Juan Pineda-Aguirre, Laura Velásquez, Ainhoa Rubio-Clemente and Edwin Chica
Processes 2024, 12(5), 938; https://doi.org/10.3390/pr12050938 - 5 May 2024
Viewed by 1370
Abstract
In this work, an experimental analysis of the performance of a cross-flow turbine, commonly referred to as a Michell–Banki turbine (MBT), is carried out for small-scale hydropower production in rural areas located in developing countries to support their social and economic development activities. [...] Read more.
In this work, an experimental analysis of the performance of a cross-flow turbine, commonly referred to as a Michell–Banki turbine (MBT), is carried out for small-scale hydropower production in rural areas located in developing countries to support their social and economic development activities. The study investigates how the efficiency of the MBT is influenced by the presence or absence of a nozzle, along with variations in the internal guide vane (GV) and its angle. The runner had 26 blades that were arranged symmetrically in the periphery between two circular plates. The designed MBT had the ability to generate a maximum of 100 W of power at a water flow rate and a head of 0.009 m3/s and 0.6311 m, respectively. The experimental tests were carried out using a hydraulic bench. The turbine efficiency without the inner GV was found to be higher than that of the turbine with the inner GV; i.e., it was found that the utilization of the GV did not enhance the efficiency of the MBT due to the occurrence of a choking effect. A maximum hydraulic efficiency of 85% was achieved in the turbine without an inner GV in comparison with the efficiency achieved (77%) with this device and an optimum opening angle of the GV of 24° (75% of opening). In this regard, the GV design should be carefully carried out to improve the MBT efficiency. Additionally, the effect of the GV shape on the MBT performance should be experimentally investigated to obtain a more general judgment regarding the role of this device. Full article
(This article belongs to the Special Issue Process and Modelling of Renewable and Sustainable Energy Sources)
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18 pages, 2294 KiB  
Article
Low-Carbon Optimal Configuration of Integrated Electricity and Natural Gas Energy System with Life-Cycle Carbon Emission
by Jianpei Han, Ershun Du, Xunyan Lv and Jinming Hou
Processes 2024, 12(4), 845; https://doi.org/10.3390/pr12040845 - 22 Apr 2024
Viewed by 988
Abstract
In response to the challenges of global warming and the development of A low-carbon economy, the integrated electricity and natural gas energy system (IEGES) is known as an important structure for future energy supply; thus, its planning and design must take low-carbon and [...] Read more.
In response to the challenges of global warming and the development of A low-carbon economy, the integrated electricity and natural gas energy system (IEGES) is known as an important structure for future energy supply; thus, its planning and design must take low-carbon and environmental protection factors into account. Regarding carbon emissions as an optimization criterion, this paper built life-cycle carbon emission models of IEGES components. Then, taking the capacities of the energy resources, storage and conversion units of IEGES as the optimization variables, a multi-objective optimization configuration model was established considering the annual investment operation cost and the life-cycle carbon emissions. The multi-objective model was transformed into a single-objective one by an ε-constraint approach and the polynomial fitting method was employed to obtain the value of ε for obtaining uniformly distributed Pareto sets. Based on the fuzzy entropy weight method and the fuzzy affiliation degree approach, the obtained Pareto sets were ranked and the solution with the highest ranking value was selected as the optimal solution for the original problem. Finally, the configuration schemes were analyzed from the perspectives of economy, carbon emission and renewable energy utilization, and the effectiveness and rationality of the proposed optimization method were verified through MATLAB simulation. Full article
(This article belongs to the Special Issue Process and Modelling of Renewable and Sustainable Energy Sources)
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