scholarly journals ПРОБЛЕМИ УПРАВЛІННЯ В СИСТЕМАХ SMART GRID УНІВЕРСИТЕТСЬКОГО ХАБА ЕНЕРГОЕФЕКТИВНОСТІ

2022 ◽  
pp. 58-66
Author(s):  
Оlena M. Nifatova ◽  
Valeriia G. Scherbak ◽  
Oleksii Yu. Volianyk ◽  
Mykhailo O. Verhun
Keyword(s):  
Energy Efficiency ◽  
Smart Grid ◽  
Renewable Energy Sources ◽  
Energy Generation ◽  
Active Power ◽  
Management Systems ◽  
Electrical Network ◽  
Power Balance ◽  
The University ◽  
Grid Management

The article attempts to tackle the issues of enhancing the performance of university energy efficiency management systems. An emphasis is put that in modern realia, alternative and renewable energy sources are becoming increasingly important in the electric power sector, thus contributing to environmental protection and enabling active electricity consumers to have their own sources of energy generation. However, it is observed that the relationships between energy generation sources and electricity consumers are complicated by new demands for setting balancing modes due to certain volatility of energy generation by alternative sources as well as the need to connect additional energy storage facilities. To identify opportunities of using Smart Grid technologies to manage the University energy consumption, a power balance equation was used to determine an active power balance between generated power, generation sources and power consumed by electricity consumers. In addition, the indicators of the total active power loss in the electrical network associated with the technological consumption of energy for its transmission was included into this equation. The study presents the results of an in-depth critical analysis on Smart Grid methodology and provides argument for the relevance of using artificial intelligence techniques in Smart Grid management systems of the University energy efficiency hub, along with suggesting a notion of electricity generating consumer in the concept of intelligent networks with two-way flow of energy and information as subsystems of a different nature. It is argued that the developed conceptual model of the electricity generating consumer for multilevel smart grid management systems and their infrastructure within the University energy efficiency hub allows establishing relationships between its structural elements and objects of different character. The findings reveal that the specifics of the developed method in setting priorities and regulatory standards for optimal management by a generating consumer within the University energy efficiency hub is the possibility of its automatic adaptation to changes in the external environment subject to interactions between electricity generating consumers.

scholarly journals Active Buildings Based on Passivhaus Standard to Reduce the Energy Deficit of Regional Electric Network: Proposal Analysis

Electronics ◽  
2021 ◽  
Vol 10 (19) ◽  
pp. 2361
Author(s):  
Josué Aarón López-Leyva ◽  
Carolina Barrera-Silva ◽  
Luisa Fernanda Sarmiento-Leyva ◽  
María Fernanda González-Romero
Keyword(s):  
Distributed Generation ◽  
Energy Demand ◽  
Renewable Energy Sources ◽  
Energy Generation ◽  
High Energy ◽  
Energy Deficit ◽  
Electrical Network ◽  
Net Generation ◽  
Base Case ◽  
Heating And Cooling

This manuscript presents the analysis of a real distributed generation network considering the integration of Active Buildings that meet the Passivhaus standard criteria at the Premium level, as a base case model. The novelty aspect presented in this paper is the interconnection of Active Buildings based on the Passivhaus standard at the Premium level with the National Electricity System (particularly, in Mexico’s North Baja California region) to mitigate the energy deficit. The objective of the proposal grid is to reduce the energy deficit (≈600 MW) due to the high energy demand in the region and the reduced energy generation through conventional and renewable energy sources. In a particular way, the energy rehabilitation of some buildings was analyzed with the aim of reducing the energy demand of each one and then adding energy generation through renewable sources. As a result, all Passivhaus standard criteria (i.e., heating and cooling demands, heating and cooling loads, among others) were met. Regarding the Active Buildings performance in each distributed generation circuit, an overall installed power capacity of ≈2.3 MW was obtained, which corresponds to ≈19.1% of the maximum capacity, and ≈34.30% of the recommended integration capacity. In addition, adequate results were obtained related to the import and export of energy between distributed generation circuits, i.e., the energy exchange is up to ≈106.8 kW, intending to reduce the energy contribution of the utility electrical network. Finally, the analysis of the Active Buildings showed an increase in the net generation forecast, up to ≈2.25 MW.

scholarly journals Decentralised Active Power Control Strategy for Real-Time Power Balance in an Isolated Microgrid with an Energy Storage System and Diesel Generators

Energies ◽  
2019 ◽  
Vol 12 (3) ◽  
pp. 511 ◽  
Author(s):  
Hyeon-Jin Moon ◽  
Young Jin Kim ◽  
Jae Won Chang ◽  
Seung-Il Moon
Keyword(s):  
Energy Storage ◽  
Power Control ◽  
Real Time ◽  
Control Method ◽  
Renewable Energy Sources ◽  
Active Power ◽  
Power Balance ◽  
Active Power Control ◽  
Diesel Generators ◽  
Continuous Power

Remote microgrids with battery energy storage systems (BESSs), diesel generators, and renewable energy sources (RESs) have recently received significant attention because of their improved power quality and remarkable capability of continuous power supply to loads. In this paper, a new proportional control method is proposed using frequency-bus-signaling to achieve real-time power balance continuously under an abnormal condition of short-term power shortage in a remote microgrid. Specifically, in the proposed method, the frequency generated by the grid-forming BESS is used as a global signal and, based on the signal, a diesel generator is then controlled indirectly. The frequency is controlled to be proportional to the AC voltage deviation of the grid-forming BESS to detect sudden power shortages and share active power with other generators. Unlike a conventional constant-voltage constant-frequency (CVCF) control method, the proposed method can be widely applied to optimise the use of distributed energy resources (DERs), while maintaining microgrid voltages within an allowable range, particularly when active power balance cannot be achieved only using CVCF control. For case studies, a comprehensive model of an isolated microgrid is developed using real data. Simulation results are obtained using MATLAB/Simulink to verify the effectiveness of the proposed method in improving primary active power control in the microgrid.

scholarly journals Managing Energy Demand of Renewable Energy Sources by using Smart Grid Technology

2019 ◽  
Vol 8 (2S8) ◽  
pp. 1234-1238
Keyword(s):  
Renewable Energy ◽  
Smart Grid ◽  
Energy Demand ◽  
Renewable Energy Sources ◽  
Electrical Network ◽  
Energy Sources ◽  
Grid Technology ◽  
Renewable Sources ◽  
Smart Grid Technology ◽  
Day By Day

Day by day the non-renewable sources of power are getting depleted. Due to higher demands of energy the necessity of such sources is becoming more important in the field of electrical power according to the estimates of power sector the usage of renewable component has increased by 9% w.r.t to 2013. Even though non-renewable sources capacity increasing day by day the complexity of the power system network increasing which result in mismatch between voltage and power in electrical network. By using smart grid technology, we can minimize the unequal effect of voltage and power in the domain of renewable energy source. Smart grid technology uses digital transformation of electrical parameter to central coordination center at high sample rate, which uses effective and reliable operation in managing energy demand of renewable energy sources

Performance Evaluation and Impact Analysis of Distributed Generation on Radial Power Distribution System

2015 ◽  
Vol 799-800 ◽  
pp. 1222-1226
Author(s):  
Arthit Thaniyaphol ◽  
Itthisek Nilkhamhang
Keyword(s):  
Smart Grid ◽  
Power System ◽  
Power Distribution ◽  
Distribution System ◽  
Renewable Energy Sources ◽  
Electrical Network ◽  
Total Power ◽  
Main Task ◽  
Power Distribution System ◽  
The Impact

This research focuses on evaluating and analyzing the behavior of smart grid power distribution system with multiple, interconnected distributed generations (DGs). This topic is especially relevant to Thailand, which employs a radial distribution topology and has insufficient use of energy storage system (ESS). Integration of DGs with distribution power systems is a necessity to achieve reliable and efficient performance. The characteristics of each category of DGs must be studied to improve the power system. The main task of the interconnected system is to control and maintain voltage of the power system in an acceptable range for high reliability, efficiency and quality. The proposed study consists of two critical objectives. Firstly, we will investigate the principle operation of DGs that uses renewable energy sources interconnected with the smart grid. The second and final goal is to evaluate and analyze the impact of DGs on the power distribution system. Power injection from DGs can reduce total power loss and improve system performance. In addition, the presence of DGs can increase the voltage level and robustness of the system more than traditional electrical network. However, high penetration of DGs may have an effect on voltage changes at the bus.

scholarly journals Energy Efficiency in Smart Grid: A Prospective Study on Energy Management Systems

2015 ◽  
Vol 06 (08) ◽  
pp. 250-259 ◽  
Author(s):  
Hermes José Loschi ◽  
Julio Leon ◽  
Yuzo Iano ◽  
Ernesto Ruppert Filho ◽  
Fabrizzio Daibert Conte ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Smart Grid ◽  
Prospective Study ◽  
Energy Management ◽  
Management Systems ◽  
Energy Management Systems ◽  
A Prospective Study

scholarly journals Problems of electromagnetic compatibility of powerful energy associations during mass connection of renewable energy sources

2021 ◽  
pp. 34-45
Author(s):  
Yu.A. Papaika ◽  
O.G. Lysenko ◽  
A.V. Bublikov ◽  
I.G. Olishevskiy
Keyword(s):  
Energy Efficiency ◽  
Renewable Energy ◽  
Power Supply ◽  
Electromagnetic Compatibility ◽  
Renewable Energy Sources ◽  
Electrical Equipment ◽  
Electrical Network ◽  
Energy Sources ◽  
Nonlinear Loads ◽  
Supply Systems

Purpose. Analysis of the problem of energy efficiency and electromagnetic compatibility of powerful energy associations with nonlinear loads and renewable energy sources. Finding promising ways to increase energy efficiency of power supply systems. Methodology. Mathematical modeling of electromagnetic compatibility. Findings. The analysis of the problem of energy efficiency and electromagnetic compatibility of powerful energy associations with nonlinear loads and renewable energy sources allows us to formulate the following provisions that determine the objectives of this study. A promising way to increase the energy efficiency of power supply systems is the introduction of refined methods of analysis and forecasting of electrical modes of industrial enterprises, as well as indicators of voltage quality and reliability of electrical equipment. Originality.  Although the problem of electromagnetic compatibility has been the subject of numerous domestic and foreign studies, it should be noted that most of these works consider the processes of generating electromagnetic interference in the electrical network without reference to the technological schedules of electrical equipment. Practical value.  One of the electromagnetic effects, which is manifested in the operation of frequency converters, are significant levels of interharmonics and higher harmonics, which are generated in the electrical network and contribute to the growth of electricity losses and reduce the service life of electrical equipment. However, the regularities connecting the parameters of the power system and the modes of powerful industrial converters have not been studied, and the substantiation of the parameters of a rational energy efficient mode of the power supply system, taking into account individual graphs of higher harmonics, has not been carried out until today.

scholarly journals Influence of smart grid and renewable energy sources on energy efficiency: foreign experience

2017 ◽  
Vol 25 (4) ◽  
pp. 583-598 ◽  
Author(s):  
V.M. Matyushok ◽  
◽  
Bruno Sergio ◽  
S.A. Balashova ◽  
K.G. Gomonov ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Renewable Energy ◽  
Smart Grid ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Foreign Experience

Economic and environmental aspects of Smart Grid technologies implementation in Ukraine

2020 ◽  
pp. 28-37
Author(s):  
Oleksandra V. Kubatko ◽  
Diana O. Yaryomenko ◽  
Mykola O. Kharchenko ◽  
Ismail Y. A. Almashaqbeh
Keyword(s):  
Smart Grid ◽  
Environmental Sustainability ◽  
Distribution System ◽  
Energy Security ◽  
Smart Grids ◽  
Renewable Energy Sources ◽  
Average Energy ◽  
Time Of Day ◽  
Electricity Supply ◽  
Auxiliary Equipment

Interruptions in electricity supply may have a series of failures that can affect banking, telecommunications, traffic, and safety sectors. Due to the two-way interactive abilities, Smart Grid allows consumers to automatically redirect on failure, or shut down of the equipment. Smart Grid technologies are the costly ones; however, due to the mitigation of possible problems, they are economically sound. Smart grids can't operate without smart meters, which may easily transmit real-time power consumption data to energy data centers, helping the consumer to make effective decisions about how much energy to use and at what time of day. Smart Grid meters do allow the consumer to track and reduce energy consumption bills during peak hours and increase the corresponding consumption during minimum hours. At a higher level of management (e.g., on the level of separate region or country), the Smart Grid distribution system operators have the opportunity to increase the reliability of power supply primarily by detecting or preventing emergencies. Ukraine's energy system is currently outdated and cannot withstand current loads. High levels of wear of the main and auxiliary equipment of the power system and uneven load distribution in the network often lead to emergencies and power outages. The Smart Grid achievements and energy sustainability are also related to the energy trilemma, which consists of key core dimensions– Energy Security, Energy Equity, and Environmental Sustainability. To be competitive in the world energy market, the country has to organize efficiently the cooperation of public/private actors, governments, economic and social agents, environmental issues, and individual consumer behaviors. Ukraine gained 61 positions out of 128 countries in a list in 2019 on the energy trilemma index. In general, Ukraine has a higher than average energy security position and lower than average energy equity, and environmental sustainability positions. Given the fact that the number of renewable energy sources is measured in hundreds and thousands, network management is complicated and requires a Smart Grid rapid response. Keywords: economic development, Smart Grid, electricity supply, economic and environmental efficiency.

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