scholarly journals Unified Energy Agents for Combined District Heating and Electrical Network Simulation

2020 ◽  
Vol 12 (21) ◽  
pp. 9301
Author(s):  
Nils Loose ◽  
Christian Thommessen ◽  
Jan Mehlich ◽  
Christian Derksen ◽  
Stefan Eicker
Keyword(s):  
Smart Grid ◽  
Distribution Systems ◽  
District Heating ◽  
Electrical Network ◽  
Agent Based ◽  
Simulation And Optimization ◽  
Energy Networks ◽  
Energy Conversion Systems ◽  
And Control ◽  
Future Work

A sustainable and climate-friendly energy supply needs flexible and efficient distribution systems. Key factors to implement this kind of systems are intelligent coordination (smart grid approaches) and the integration of different energy sectors. This article introduces the unified energy agent as an agent-based approach for a comprehensive modelling and control of energy conversion systems. This approach enables both the simulation and optimization of coupled energy networks, and then in a next step, the development of corresponding smart grid solutions to be applied in the field. Its applicability for the simulation of coupled networks is presented by a real-world use-case of an innovative combined heat and electrical network, which was implemented for the city of Lemgo, Germany. Preliminary results from the project are discussed and an outlook on future work is given.

scholarly journals CONNECTIONS SMART GRIDS CONCEPT WITH UPDATES OF UKRAINIAN HEAT POWER

2019 ◽  
pp. 14-18
Author(s):  
I. Vakulenko ◽  
S. Kolosok
Keyword(s):  
Smart Grid ◽  
Smart Grids ◽  
Heat Supply ◽  
District Heating ◽  
Heat Supply System ◽  
Heat Power ◽  
Eu Member States ◽  
Energy Networks ◽  
Centralized System ◽  
The Eu

The article deals with the question of potential possibilities of using the smart grid concept in the heat power industry of Ukraine. The main obstacles that limit the development of smart grid in the heat and power complex of Ukraine are identified. Possible ways of development of the centralized system of heat supply of settlements on the basis of analogy with models of the district heat supply of the EU Member States are characterized. The factors identified as activation of which will facilitate the joint development of smart energy networks and the heat supply system in Ukraine. Key words: heat power, smart grids, models of district heating

scholarly journals A Review of Exergy Based Optimization and Control

Processes ◽  
2020 ◽  
Vol 8 (3) ◽  
pp. 364 ◽  
Author(s):  
Corey James ◽  
Tae Young Kim ◽  
Robert Jane
Keyword(s):  
High Energy ◽  
Exergy Destruction ◽  
Multi Objective Optimization ◽  
First Law Of Thermodynamics ◽  
Energy Networks ◽  
The Past ◽  
Optimization And Control ◽  
And Control ◽  
Future Work ◽  
High Energy Consumption

This work presents a critical review of the use of exergy based control and optimization for efficiency improvements in energy networks, with a background of exergy based analysis given for context. Over the past three decades, a number of studies using exergy were conducted to gain a performance advantage for high energy consumption systems and networks. Due to their complexity and the increased scale of the systems, the opportunity to misuse energy inevitability leads to inefficient operations. The studies accomplished in this area are grouped into either control or optimization to highlight each method’s ability to minimize system irreversibilities that lead to exergy destruction. The exergy based optimization and control studies featured demonstrate substantial improvements (as high as 40%) over traditional methods based on the first law of thermodynamics. This paper reviews the work completed in the area of exergy based optimization and control as of the end of September 2019, outlines the progress made, and identifies specific areas where future work can advance this area of study. A relatively small amount of publications are available compared to other fields, with most work occurring in the area of exergy based multi-objective optimization.

scholarly journals Disinfection by-products in desalinated and blend water: formation and control strategy

2018 ◽  
Vol 17 (1) ◽  
pp. 1-24 ◽  
Author(s):  
Shakhawat Chowdhury
Keyword(s):  
Distribution Systems ◽  
Water Distribution ◽  
Cancer Risks ◽  
Domestic Water ◽  
Desalinated Water ◽  
Water Demands ◽  
Product Water ◽  
And Control ◽  
Different Sources ◽  
By Products

Abstract Desalinated seawater is the major source of drinking water in many countries. During desalination, several activities including pretreatment, desalination, stabilization, mixing, storage and distribution are performed. Few disinfectants are used during these activities to control the biofouling agents and microbiological regrowth. The reactions between the disinfectants and natural organic matter (NOM), bromide and iodide form disinfection by-products (DBPs) in product water. The product water is stabilized and mixed with treated freshwater (e.g., groundwater) to meet the domestic water demands. The DBPs in desalinated and blend water are an issue due to their possible cancer and non-cancer risks to humans. In this paper, formation and distribution of DBPs in different steps of desalination and water distribution systems prior to reaching the consumer tap were reviewed. The variability of DBPs among different sources and desalination processes was explained. The toxicities of DBPs were compared and the strategies to control DBPs in desalinated water were proposed. Several research directions were identified to achieve comprehensive control on DBPs in desalinated water, which are likely to protect humans from the adverse consequences of DBPs.

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