Design of hybrid multilayer systems to improve energy management system in multi-microgrid systems in the presence of wind and solar power

2021 ◽  
pp. 0309524X2110003
Author(s):  
Hamed Babanezhaad Shirdar ◽  
Alireza Ghafouri

Connecting microgrids has some benefits such as operation cost reduction and increasing sales revenue of their owners. To exploit these benefits, an energy management system with diverse and efficient capabilities is required. In this paper, a multi-layer system has been proposed to improve the energy management system in multi-microgrid systems. The purpose of the multilayer system is to optimize the cost of energy supply for the producer with the ability to activate one or more layers to improve the energy management system. Layers are modules that may contain the data required for optimization, like generation volume, load consumption, and operational plan. The appropriate mathematical model of the proposed seven-layer structure is used to optimize the operation cost of the multi-microgrid system. To verify the performance of the energy management system, the proposed method is implemented by GAMS and MATLAB software and the results are analyzed for a sample multi-microgrid system.

2019 ◽  
Vol 8 (4) ◽  
pp. 1406-1411

Energy management system is one of the challenging tasks associated with residential buildings. The cost of energy is purely based on the amount of energy consumed during peak hours. This paper focuses on an efficient energy management system for the control of energy consumption during peak hours. ZigBee module is used to monitor the energy consumed by the home appliances. The working of the proposed system is categorized into two modes of operation: normal time and peak time. During normal time, all home appliances can be operated and the cost of energy will be at normal rate. Whereas, during peak time, high rating machines will be shut down, that is controlled by ZigBee and the light loads will be operated from battery supply. Thus the proposed system reduces the energy consumption and is cost effective. Simulation analysis is done using proteus software. Hardware model is also implemented which proves that the proposed energy management system improves the energy efficiency.


Author(s):  
R. K. Chauhan ◽  
B. S. Rajpurohit ◽  
L. Wang ◽  
F. M. Gonzalez Longatt ◽  
S. N. Singh

AbstractThis paper presents a real time price based energy management system for DC microgrid. The DC distribution system is considered as a prospective system according to the increase of DC loads and DC output type distribution energy resources (DERs) such as photovoltaic (PV) systems, battery bank (BB), and hybrid car (HC). The control objective is to achieve the optimal cost of energy. The proposed control scheme is developed based on the source as well as load scheduling of the DC microgrid. The source scheduling algorithm is based on the selection of cheapest power source to supply the load of DC microgrid and achieve the optimal electricity price. The BB and HC charges in regular hours at the less electricity price to supply the future load during the higher electricity price of the public utility. The load scheduling algorithm shifts the deferrable load of the building from peak hours to the regular hours to obtain the lowest cost of energy for the building. The proposed scheme significantly decreases the peak demand, which is the main cause of load shedding. Dynamic simulation is presented to access the control performance with price fluctuations and robustness of the system.


Author(s):  
Т.А. Забазнова ◽  
Т.В. Секачева ◽  
С.Е. Карпушова

В нашей стране затраты на топливо и энергию составляют от 10 до 40% себестоимости продукции. Такой высокий уровень энергоемкости увеличивает затраты предприятия, связанные с производством продукции, и, как результат, снижает его конкурентоспособность. Поэтому реализация энергосберегающих программ на промышленных предприятиях становится первоочередной задачей. Стратегическое управление энергоэффективностью позволит поэтапно оптимизировать работу и значительно сократить расходы предприятия. В статье проведены анализ и оценка активности промышленного предприятия АО «Себряковцемент» с учетом оценки энергоемкости его деятельности. Для развития существующей системы управления энергозатратами промышленного предприятия предложена модель на основе стандарта ИСО. In our country, the cost of fuel and energy is from 10 to 40% of the cost of production. High energy consumption of products should be recognized as the main problem, due to the fact that it has an impact on increasing the cost of production and, as a result, on reducing the competitiveness of enterprises. Therefore, the implementation of energy-saving programs at industrial enterprises becomes a priority. Strategic management of energy efficiency will allow you to gradually optimize the work and significantly reduce the costs of the enterprise. The article analyzes and evaluates the activity of the industrial enterprise of company «Sebryakovcement», taking into account the assessment of the energy intensity of its activities. In the development of the existing energy management system of an industrial enterprise, a model based on the ISO standard is proposed.


Energies ◽  
2018 ◽  
Vol 11 (7) ◽  
pp. 1877 ◽  
Author(s):  
Andrés Henao-Muñoz ◽  
Andrés Saavedra-Montes ◽  
Carlos Ramos-Paja

An optimal power dispatch of a small-scale standalone microgrid for remote area power supply in Colombian territory is proposed in this paper. The power dispatch is generated by an energy management system based on a mixed-integer linear programming, which minimizes the cost of operating the microgrid while fulfilling the technical constraints of its elements. The energy management system solves an optimization problem using the algebraic representation of the generators and its constraints. Basic steady-state models of the generators are selected to solve the optimization problem. The small-scale microgrid is considered for a remote area power supply in Taroa, a small settlement in La Guajira, Colombia. The microgrid is composed of photovoltaic modules, a wind generator, a diesel generator, a battery bank, and residential loads. To validate the solution, the elements of the microgrids are parameterized with information from commercial equipment. Moreover, the power dispatch obtained with the proposed solution is compared with a power dispatch generated by a heuristic algorithm, which has been previously used to dispatch power in a small-scale standalone microgrid. Results show that the cost of operating the microgrid is minimized using the proposed optimization approach: a reduction of the operating cost equal to 25.5% of the cost imposed by the heuristic algorithm is obtained.


2015 ◽  
Vol 2015 ◽  
pp. 1-15 ◽  
Author(s):  
Jongbae Kim ◽  
Jinsung Byun ◽  
Daebeom Jeong ◽  
Myeong-in Choi ◽  
Byeongkwan Kang ◽  
...  

A smart grid (SG) has attracted great attention due to recent environmental problems. SG technologies enable users, such as energy system operators and consumers, to reduce energy consumption and the emission of greenhouse gases, by changing energy infrastructure more efficiently. As a part of the SG, home energy management system (HEMS) has become increasingly important, because energy consumption of a residential sector accounts for a significant amount of total energy consumption. However, a conventional HEMS has some architectural limitations on scalability, reusability, and interoperability. Furthermore, the cost of implementation of a HEMS is very expensive, which leads to the disturbance of the spread of a HEMS. Therefore, this paper proposes an Internet of Things- (IoT-) based HEMS with lightweight photovoltaic (PV) system over dynamic home area networks (DHANs), which enables the construction of a HEMS to be more scalable, reusable, and interoperable. We suggest the techniques for reducing the cost of the HEMS with various perspectives on system, network, and middleware architecture. We designed and implemented the proposed HEMS and conducted a experiment to verify the performance of the proposed system.


2012 ◽  
Vol 132 (10) ◽  
pp. 695-697 ◽  
Author(s):  
Hideki HAYASHI ◽  
Yukitoki TSUKAMOTO ◽  
Shouji MOCHIZUKI

2012 ◽  
Vol 132 (10) ◽  
pp. 692-694 ◽  
Author(s):  
Yoshihiro OGITA ◽  
Yutaka IINO ◽  
Hideki HAYASHI

Sign in / Sign up

Export Citation Format

Share Document