scholarly journals A Simulation Method Based on the Candidate Operation Strategies for the Combined Cooling, Heat, and Power (CCHP) System

2021 ◽  
Vol 2021 ◽  
pp. 1-13
Author(s):  
Feng Zhu ◽  
Jing-Qi Fu ◽  
Bin Zou ◽  
Wen-Rong Si
Keyword(s):  
Cost Minimization ◽  
Simulation Method ◽  
Optimal Operation ◽  
Small Time ◽  
Operation Strategy ◽  
Candidate Strategy ◽  
Combined Cooling ◽  
Cooling Methods ◽  
Candidate Set

With the change of the distributed Combined cooling, heat, and power (CCHP) system operation environment, such as the operation under the power market, CCHP needs to adopt the operation strategy based on cost minimization instead of the traditional following thermal load strategy (FTL). However, the current CCHP system simulation adopts FTL or FEL or a combination of the two; whether these strategies have the least cost has not been confirmed. In this paper, all kinds of operation strategies of the CCHP with two cooling methods are investigated according to the KKT conditions (Karush–Kuhn–Tucker conditions) of the optimal operation model. Among all the feasible operation strategies, most of them do not meet the KKT condition, and only 43 strategies may be the optimal ones that constitute candidate set. The conditions of the optimal operation strategy in the candidate set are obtained, and it is easy to calculate, so the optimal operation strategy can be easily selected from the candidate set. Some previously unnoticed strategies, for example, TEWM, PE-FPG, FTL-R, and FEL-L, may become optimal. A rule-based CCHP simulation method is established that selects the strategy with minimal cost as the optimal strategy from the candidate strategy set. The presented method has small time consumption and can simulate the optimal operation. The case study verified the characteristics of the proposed simulation method.

scholarly journals A Simplified Simulation Method for Flood-Induced Bend Scour—A Case Study Near the Shuideliaw Embankment on the Cho-Shui River

Water ◽  
2017 ◽  
Vol 9 (5) ◽  
pp. 324 ◽  
Author(s):  
Wen-Dar Guo ◽  
Jian-Hao Hong ◽  
Cheng-Hsin Chen ◽  
Chih-Chiang Su ◽  
Jihn-Sung Lai
Keyword(s):  
Simulation Method

scholarly journals A look-ahead Monte Carlo simulation method for improving parental selection in trait introgression

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Saba Moeinizade ◽  
Ye Han ◽  
Hieu Pham ◽  
Guiping Hu ◽  
Lizhi Wang
Keyword(s):  
Monte Carlo ◽  
State Of The Art ◽  
Simulation Method ◽  
Multiple Trait ◽  
Look Ahead ◽  
Probability Of Success ◽  
Genetic Distribution ◽  
Selection Of ◽  
Trait Introgression

AbstractMultiple trait introgression is the process by which multiple desirable traits are converted from a donor to a recipient cultivar through backcrossing and selfing. The goal of this procedure is to recover all the attributes of the recipient cultivar, with the addition of the specified desirable traits. A crucial step in this process is the selection of parents to form new crosses. In this study, we propose a new selection approach that estimates the genetic distribution of the progeny of backcrosses after multiple generations using information of recombination events. Our objective is to select the most promising individuals for further backcrossing or selfing. To demonstrate the effectiveness of the proposed method, a case study has been conducted using maize data where our method is compared with state-of-the-art approaches. Simulation results suggest that the proposed method, look-ahead Monte Carlo, achieves higher probability of success than existing approaches. Our proposed selection method can assist breeders to efficiently design trait introgression projects.

A multi-time-space scale optimal operation strategy for a distributed integrated energy system

2021 ◽  
Vol 289 ◽  
pp. 116698
Author(s):  
Peng Li ◽  
Zixuan Wang ◽  
Jiahao Wang ◽  
Tianyu Guo ◽  
Yunxing Yin
Keyword(s):  
Energy System ◽  
Optimal Operation ◽  
Operation Strategy ◽  
Space Scale ◽  
Time Space ◽  
Integrated Energy System

Optimal sizing, operation strategy and case study of a grid-connected solid oxide fuel cell microgrid

2022 ◽  
Vol 307 ◽  
pp. 118214
Author(s):  
Jianhua Jiang ◽  
Renjie Zhou ◽  
Hao Xu ◽  
Hao Wang ◽  
Ping Wu ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Solid Oxide Fuel Cell ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Operation Strategy ◽  
Optimal Sizing

scholarly journals Traffic queue modeling using arena simulation software (a case study of Mergan 4-Way intersection in Malang City)

2018 ◽  
Vol 204 ◽  
pp. 02009 ◽  
Author(s):  
Dani Yuniawan ◽  
P.P Aang Fajar ◽  
Samsudin Hariyanto ◽  
Romi Setiawan
Keyword(s):  
Flow System ◽  
Simulation Method ◽  
Simulation Software ◽  
Verification And Validation ◽  
Scenario Simulation ◽  
Traffic Light ◽  
Simulation Scenario ◽  
Research Outcome ◽  
Arena Simulation

Currently Mergan 4-way intersection is one of intersection that have most traffic dense in Malang City, East Java - Indonesia. This research implement simulation method in order to give several solution option to manage the traffic queue in Mergan 4-way intersection. Simulation method is conducted with several phase, from problem identification up to verification and validation also scenario simulation. Arena Simulation software v.14 is chosen as the tool to modeling the traffic queue line. The research outcome give several solution through Traffic Light 2 simulation scenario. With this simulation scenario, the traffic flow system simulation can be run with fewer queues of vehicles.

scholarly journals Optimal Configuration and Sizing of Seaport Microgrids including Renewable Energy and Cold Ironing—The Port of Aalborg Case Study

Energies ◽  
2022 ◽  
Vol 15 (2) ◽  
pp. 431
Author(s):  
Nur Najihah Abu Bakar ◽  
Josep M. Guerrero ◽  
Juan C. Vasquez ◽  
Najmeh Bazmohammadi ◽  
Muzaidi Othman ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Renewable Energy Sources ◽  
Storage System ◽  
Maximum Load ◽  
Optimal Operation ◽  
Economic Feasibility ◽  
Photovoltaic System ◽  
Design Stage ◽  
Component Size

Microgrids are among the promising green transition technologies that will provide enormous benefits to the seaports to manage major concerns over energy crises, environmental challenges, and economic issues. However, creating a good design for the seaport microgrid is a challenging task, considering different objectives, constraints, and uncertainties involved. To ensure the optimal operation of the system, determining the right microgrid configuration and component size at minimum cost is a vital decision at the design stage. This paper aims to design a hybrid system for a seaport microgrid with optimally sized components. The selected case study is the Port of Aalborg, Denmark. The proposed grid-connected structure consists of renewable energy sources (photovoltaic system and wind turbines), an energy storage system, and cold ironing facilities. The seaport architecture is then optimized by utilizing HOMER to meet the maximum load demand by considering important parameters such as solar global horizontal irradiance, temperature, and wind resources. Finally, the best configuration is analyzed in terms of economic feasibility, energy reliability, and environmental impacts.

scholarly journals Quantitative assessment of ecological operation effects based on flood pulses and ecology-economic coupling model: a case study of Three Gorges Reservoir, China

2021 ◽  
Author(s):  
Jiqing Li ◽  
Jing Huang ◽  
Zhiming Xue ◽  
Pengteng Liang ◽  
Yueqiu Wu
Keyword(s):  
Three Gorges Reservoir ◽  
Simulation Method ◽  
Coupling Model ◽  
Flood Pulse ◽  
Ecological Impacts ◽  
Three Gorges ◽  
River Ecosystem ◽  
Random Simulation ◽  
Flood Pulses

Abstract Flood pulses are closely related to river ecosystem health. Reservoirs bring many benefits to flood control, power generation, shipping etc., but their attenuation effects on runoff flood pulses should not be ignored. Ecological operation can effectively reduce some negative ecological impacts brought by the reservoir. However, the inability to quantitatively assess ecological effects hinders the promotion of ecological operation in reservoir management. To solve this problem, we proposed 11 flood pulse indicators (FPI), a random simulation method and an ecology-economy coupling model in this study. In addition, we used four major Chinese carps as indicator species and the Three Gorges Reservoir as a case study to test the role of flood pulses in improving the ecological operation effects of the reservoir from the fish protection perspective. The results show that: (1) FPI can be controlled by the reservoir and reflect the flood pulse characteristics of runoff. (2) Random simulation method guides managers to optimize the discharge and formulate eco-friendly operation schemes. (3) Ecology-economy coupling model helps managers analyze the relationship between ecological operation effects and economic benefits. A comprehensive assessment can improve the acceptance of ecological operation, which is conducive to the sustainable development of river ecosystem.

scholarly journals Green Operation Strategy for SMEs: Agri-food Business Thailand Case Study

TEM Journal ◽  
2021 ◽  
pp. 1803-1812
Author(s):  
Krittapha Saenchaiyathon ◽  
Jirawat Wongthongchai
Keyword(s):  
Economic Performance ◽  
Business Owners ◽  
Green Supply Chain Management ◽  
Green Supply Chain ◽  
Survey Questionnaire ◽  
Sustainable Competitive Advantage ◽  
Operation Strategy ◽  
Strategy Model ◽  
Industry Sectors

Green supply chain management is increasingly recognized in public, and many industry sectors progressively acknowledge its essential. The study's goals were to find an effective green operation strategy model that results in a sustainable competitive advantage for the SMEs agri-foods business. A total of 250 SMEs agri-food business owners were responded to a survey questionnaire. In this study, the partial least squares (PLS-SEM) technique was used for hypothesis testing. Research results indicate that green operation strategy influences the companies to gain better efficiency, environmental, and economic performance.

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