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1. Combining model-based and model-free methods for stochastic control of distributed energy resources

Author:
Chen, Yue; Lin, Yashen
Source:
Applied energy 2021 v.283 pp. 116204
ISSN:
0306-2619
Subject:
operating costs,   etc   ; energy; uncertainty;     Show all 3 Subjects
Abstract:
... Modern distribution systems are experiencing a fast transformation with the growing penetration of distributed energy resources (DERs). Along with the economic and environmental benefits of DERs, challenges arise to address the uncertainties caused by their inherent volatility. If properly coordinated, however, DERs have the potential to provide the controllability that grid operators need. In the ...
DOI:
10.1016/j.apenergy.2020.116204

2. Stochastic bi-level coordination of active distribution network and renewable-based microgrid considering eco-friendly Compressed Air Energy Storage system and Intelligent Parking Lot

Author:
Haghifam, Sara; Najafi-Ghalelou, Afshin; Zare, Kazem; Shafie-khah, Miadreza; Arefi, Ali
Source:
Journal of cleaner production 2021 v.278 pp. 122808
ISSN:
0959-6526
Subject:
operating costs,   etc   ; air; energy; models;     Show all 4 Subjects
Abstract:
... The optimal operation of active distribution systems in the presence of private renewable-based entities is one of the primary challenges of future power networks. In this regard, developing a practical framework to deal with this kind of issue is essential. Hence, in this paper, a novel bi-level stochastic programming approach is presented for optimal energy and reserve scheduling of the active d ...
DOI:
10.1016/j.jclepro.2020.122808

3. Look-ahead risk-constrained scheduling for an energy hub integrated with renewable energy

Author:
Xu, Xiao; Hu, Weihao; Liu, Wen; Du, Yuefang; Huang, Rui; Huang, Qi; Chen, Zhe
Source:
Applied energy 2021 v.297 pp. 117109
ISSN:
0306-2619
Subject:
operating costs,   etc   ; energy; renewable energy sources;     Show all 3 Subjects
Abstract:
... Energy hubs or multi-energy systems facilitate an improvement in their efficiency and flexibility for different energy supplies. However, the application of energy hubs results in scheduling challenges for the entire system due to the mutual impact of various energy forms and the increase in the number of uncertain variables. One of the parameters of an energy storage system, which is an indispens ...
DOI:
10.1016/j.apenergy.2021.117109

4. Vehicle routing problem for reverse logistics of End-of-Life Vehicles (ELVs)

Author:
Chaabane, Amin; Montecinos, Julio; Ouhimmou, Mustapha; Khabou, Ahmed
Source:
Waste management 2021 v.120 pp. 209-220
ISSN:
0956-053X
Subject:
operating costs,   etc   ; industry; prices; transportation; North America;     Show all 5 Subjects
Abstract:
... Reverse logistics management of End-of-Life Vehicles (ELVs) is increasingly focusing on practical solutions for getting additional value from products at the end of their life. As automotive is one of the fastest-growing sectors, the number of ELVs to be collected and recycled has been steadily increasing due to more stringent regulations. On the other hand, the operational cost (transportation) o ...
DOI:
10.1016/j.wasman.2020.11.008

5. Peer-to-peer energy bartering for the resilience response enhancement of networked microgrids

Author:
Mehri Arsoon, Milad; Moghaddas-Tafreshi, Seyed Masoud
Source:
Applied energy 2020 v.261 pp. 114413
ISSN:
0306-2619
Subject:
operating costs,   etc   ; algorithms; energy;     Show all 3 Subjects
Abstract:
... This paper proposes a peer-to-peer (P2P) energy bartering framework for enhancing resilience response of networked microgrids (NMGs) against extreme events. In the emergencies, electrically isolated microgrids (MGs) are physically interconnected via a common bus to form NMGs for energy sharing. These MGs communicate with each other through cyber links to reach a consensus on direct energy barterin ...
DOI:
10.1016/j.apenergy.2019.114413

6. Incorporating deep learning of load predictions to enhance the optimal active energy management of combined cooling, heating and power system

Author:
Zhou, Yuan; Wang, Jiangjiang; Liu, Yi; Yan, Rujing; Ma, Yanpeng
Source:
Energy 2021 v.233 pp. 121134
ISSN:
0360-5442
Subject:
operating costs,   etc   ; algorithms; case studies; cooling; energy; neural networks; prediction;     Show all 7 Subjects
Abstract:
... The energy management of combined cooling, heating and power (CCHP) system is essential for simultaneously improving its energy and economic performances. However, the conventional operation strategies are mainly logical control, which passively adapts to users’ demands. This paper proposes an optimal economic energy dispatch model of the CCHP system incorporating deep learning of load predictions ...
DOI:
10.1016/j.energy.2021.121134

7. Stochastic optimal planning scheme of a zero-carbon multi-energy system (ZC-MES) considering the uncertainties of individual energy demand and renewable resources: An integrated chance-constrained and decomposition algorithm (CC-DA) approach

Author:
Alabi, Tobi Michael; Lu, Lin; Yang, Zaiyue
Source:
Energy 2021 v.232 pp. 121000
ISSN:
0360-5442
Subject:
operating costs,   etc   ; algorithms; energy; mathematical models; system optimization;     Show all 5 Subjects
Abstract:
... Renewable resources stochasticity and energy demand variation are inevitable during the operation of energy systems. Thus, this paper presents novel stochastic planning and operation of a zero-carbon multi-energy system (ZC-MES) taking the uncertainties of individual energy demand and environmental conditions into consideration. The comprehensive mathematical model is developed as an optimization ...
DOI:
10.1016/j.energy.2021.121000

8. Relation analysis on emission control and economic cost of SCR system for marine diesels

Author:
Zhang, Guangwei; Yan, Haoyu; Li, Tinghui; Zhu, Yuanqing; Zhou, Song; Feng, Yongming; Zhou, Weihao
Source:
The Science of the total environment 2021 v.788 pp. 147856
ISSN:
0048-9697
Subject:
operating costs,   etc   ; diesel engines; environment; models; pollution; sustainable development;     Show all 6 Subjects
Abstract:
... In order to meet the IMO Tier III emissions regulations and reduce environmental pollution, many ocean-going vessels have installed the marine SCR system to reduce NOx emissions. However, the investment cost and operation cost of the marine SCR system, as well as the factors affecting the SCR cost are still the problems that need to be studied. In this paper, MAN S46 diesel engine matched SCR syst ...
DOI:
10.1016/j.scitotenv.2021.147856

9. A critical review on different harvesting techniques for algal based biodiesel production

Author:
Ananthi, V.; Balaji, P.; Sindhu, Raveendran; Kim, Sang-Hyoun; Pugazhendhi, Arivalagan; Arun, A.
Source:
The Science of the total environment 2021 v.780 pp. 146467
ISSN:
0048-9697
Subject:
operating costs,   etc   ; automation; biodiesel; carbon; dewatering; energy; environment; feedstocks; microalgae;     Show all 9 Subjects
Abstract:
... The fuels retrieved from renewable sources which are usually employed as both carbon and energy sources are termed as neutral based biofuels. The most promising feedstock from renewable sources with great potentiality in contributing to the inclining energy demand is microalgae. These microalgae can be harnessed readily in terms of obtaining qualitative biodiesel with greater energy consumption un ...
DOI:
10.1016/j.scitotenv.2021.146467

10. An optimal scheduling strategy for peer-to-peer trading in interconnected microgrids based on RO and Nash bargaining

Author:
Wei, Chun; Shen, Zhuzheng; Xiao, Dongliang; Wang, Licheng; Bai, Xiaoqing; Chen, Haoyong
Source:
Applied energy 2021 v.295 pp. 117024
ISSN:
0306-2619
Subject:
operating costs,   etc   ; energy; simulation models; uncertainty; wind power;     Show all 5 Subjects
Abstract:
... Based on the peer-to-peer (P2P) trading framework of interconnected microgrids, this paper proposes an optimal scheduling strategy for interconnected microgrids considering the uncertainty of wind power, to minimize the operation cost of the individual microgrid and obtain profits through active energy trading with other microgrids. The proposed optimization model considers the grid structure of m ...
DOI:
10.1016/j.apenergy.2021.117024

11. Can public-private partnerships (PPPs) improve the environmental performance of urban sewage treatment?

Author:
Tang, Yaru; Liu, Mengdi; Zhang, Bing
Source:
Journal of environmental management 2021 v.291 pp. 112660
ISSN:
0301-4797
Subject:
operating costs,   etc   ; environmental performance; pollutants; sewage treatment; wastewater; China;     Show all 6 Subjects
Abstract:
... Insufficient sewage treatment facility is one important reason for wastewater entering and affecting aquatic ecosystems. The PPP mode, serving as one of the fastest-growing mechanisms for public service provision in recent decades, is considered to be an effective way to alleviate the pressure of funding shortages and to improve the efficiency of sewage treatment. However, the performance of PPPs ...
DOI:
10.1016/j.jenvman.2021.112660

12. Multi-objective optimization based controller design for improved wastewater treatment plant operation

Author:
Tejaswini, E.S.S.; Panjwani, Soniya; Gara, Uday Bhaskar Babu; Ambati, Seshagiri Rao
Source:
Environmental technology & innovation 2021 v.23 pp. 101591
ISSN:
2352-1864
Subject:
operating costs,   etc   ; environmental technology; simulation models; wastewater treatment;     Show all 4 Subjects
Abstract:
... Wastewater treatment plants (WWTPs) are highly complex and nonlinear processes. The challenge lies in the design of a control strategy to lower the operational costs and to enhance the effluent quality simultaneously. In this research, PI controllers are designed for control of biological WWTPs and Benchmark Simulation Model No. 1 (BSM1) is used as a working platform. Genetic Algorithms which are ...
DOI:
10.1016/j.eti.2021.101591

13. Thermo-economic optimization of steam injection operation in enhanced oil recovery (EOR) using nano-thermal insulation

Author:
Afra, Mohammad; Peyghambarzadeh, S.M.; Shahbazi, Khalil; Tahmassebi, Narges
Source:
Energy 2021 v.226 pp. 120409
ISSN:
0360-5442
Subject:
operating costs,   etc   ; energy; heat; insulating materials; oils; steam; temperature;     Show all 7 Subjects
Abstract:
... Energy loss during steam injection in enhanced oil recovery (EOR) is customarily happened which not only reduces the steam heating value and increases the cost of operation but also leads to severe damages to injection pipes. In order to enhance the delivered heat to the oil deposit, it is common praxis to raise the steam injection rate or its temperature, in spite of the consequent energy loss en ...
DOI:
10.1016/j.energy.2021.120409

14. Enhancing dispatch efficiency of the Nigerian power system: Assessment of benefits

Author:
Remy, Tom; Chattopadhyay, Deb
Source:
Energy for sustainable development 2021 v.62 pp. 29-43
ISSN:
0973-0826
Subject:
operating costs,   etc   ; batteries; cost effectiveness; energy; models; sustainable development;     Show all 6 Subjects
Abstract:
... Although developing countries typically deal with the challenge of mobilizing investments for adding new generation and transmission capacity to cope with high demand growth, there are often opportunities to enhance operation of existing generators and extract significant cost reduction as well as the ability to meet greater demand. This is particularly relevant for the Nigerian power system that ...
DOI:
10.1016/j.esd.2021.03.007

15. Within-day rolling optimal scheduling problem for active distribution networks by multi-objective evolutionary algorithm based on decomposition integrating with thought of simulated annealing

Author:
Zhang, Jingrui; Li, Zhuoyun; Wang, Beibei
Source:
Energy 2021 v.223 pp. 120027
ISSN:
0360-5442
Subject:
operating costs,   etc   ; algorithms; electric potential difference; models; prediction; uncertainty;     Show all 6 Subjects
Abstract:
... The prediction accuracy plays a very important role in the optimal dispatch problem of active distribution networks (ADN). Basing on the fact that the prediction accuracy will be greatly improved when approaching prediction domains and decreasing prediction time periods, rolling optimization provides an alternative approach to handle uncertainty of renewable sources in ADN. Considering the charact ...
DOI:
10.1016/j.energy.2021.120027

16. Adjustable robust optimization approach for two-stage operation of energy hub-based microgrids

Author:
Shams, Mohammad H.; Shahabi, Majid; MansourLakouraj, Mohammad; Shafie-khah, Miadreza; Catalão, João P.S.
Source:
Energy 2021 v.222 pp. 119894
ISSN:
0360-5442
Subject:
operating costs,   etc   ; energy; models; natural gas; uncertainty; wind;     Show all 6 Subjects
Abstract:
... Growing demand for energy carriers has led to an increased interest in developing and managing multiple energy carrier microgrids. Furthermore, the volatile nature of renewable resources as well as the uncertain electrical and thermal demands imposes significant challenges for the operation of microgrids. Motivated by this, the paper leverages a min max min robust framework for short-term operatio ...
DOI:
10.1016/j.energy.2021.119894

17. Extended convex hull-based distributed optimal energy flow of integrated electricity-gas systems

Author:
Liu, Rong-Peng; Sun, Wei; Yin, Wenqian; Zhou, Dali; Hou, Yunhe
Source:
Applied energy 2021 v.287 pp. 116551
ISSN:
0306-2619
Subject:
operating costs,   etc   ; algorithms; electricity; energy flow; equations; models;     Show all 6 Subjects
Abstract:
... Integrated electricity and gas systems are constructed to facilitate the gas-fired generation, and the distributed operation of these integrated systems have received much attention due to the increased emphasis on data security and privacy between different agencies. This paper proposes an extended convex hull based method to address optimal energy flow problems for the integrated electricity and ...
DOI:
10.1016/j.apenergy.2021.116551

18. Increasing resiliency against information vulnerability of renewable resources in the operation of smart multi-area microgrid

Author:
Tabar, Vahid Sohrabi; Ghassemzadeh, Saeid; Tohidi, Sajjad
Source:
Energy 2021 v.220 pp. 119776
ISSN:
0360-5442
Subject:
operating costs,   etc   ; electric power; energy; fuzzy logic; probability distribution;     Show all 5 Subjects
Abstract:
... With the widespread use of information and communication technologies in smart grids, the vulnerability of these networks has increased significantly. In this paper, the operation of a smart electrical energy system is evaluated by considering the information vulnerability of renewable generators and their sensors. Hence, the false data injection process is modelled by the probability distribution ...
DOI:
10.1016/j.energy.2021.119776

19. Anti-fouling piezoelectric PVDF membrane: Effect of morphology on dielectric and piezoelectric properties

Author:
Su, Yu Ping; Sim, Lee Nuang; Li, Xin; Coster, Hans G.L.; Chong, Tzyy Haur
Source:
Journal of membrane science 2021 v.620 pp. 118818
ISSN:
0376-7388
Subject:
operating costs,   etc   ; agitation; filtration; microscopy; microstructure; phosphates; separation; silica; thermoplastics;     Show all 9 Subjects
Abstract:
... Piezoelectric membrane serves as an alternative to vibratory shear-enhanced process, which potentially offers lower cost of operation as the source of agitation is the membrane itself. The effect of morphology on dielectric and piezoelectric properties of polyvinylidene fluoride (PVDF) membranes prepared via non-solvent induced phase separation method was investigated. The membranes were fabricate ...
DOI:
10.1016/j.memsci.2020.118818

20. Multi-energy coordinated microgrid scheduling with integrated demand response for flexibility improvement

Author:
Chen, J.J.; Qi, B.X.; Rong, Z.K.; Peng, K.; Zhao, Y.L.; Zhang, X.H.
Source:
Energy 2021 v.217 pp. 119387
ISSN:
0360-5442
Subject:
operating costs,   etc   ; consumer satisfaction; energy; models; risk; uncertainty; wind power;     Show all 7 Subjects
Abstract:
... Multi-energy supply system is under development with a variety of benefits for microgrid operation. In this paper, the coordinated scheduling and optimal operation strategy of coupled heat-power-gas (CHPG) microgrid are studied for flexibility improvement in consideration of implementing cogeneration technology and power to gas (P2G) technology. To enhance the operational flexibility of the CHPG i ...
DOI:
10.1016/j.energy.2020.119387