Optimal Operation Method of Smart House by Controllable Loads based on Smart Grid Topology

2013 ◽  
Vol 14 (5) ◽  
pp. 411-420 ◽  
Author(s):  
Akihiro Yoza ◽  
Kosuke Uchida ◽  
Atsushi Yona ◽  
Tomonobu Senju
Keyword(s):  
Renewable Energy ◽  
Smart Grid ◽  
Heat Pump ◽  
Power Flow ◽  
Distribution Systems ◽  
Renewable Energy Sources ◽  
Optimal Operation ◽  
Apartment House ◽  
Flow Fluctuations ◽  
Smart House

Abstract From the perspective of global warming suppression and depletion of energy resources, renewable energy such as wind generation (WG) and photovoltaic generation (PV) are getting attention in distribution systems. Additionally, all electrification apartment house or residence such as DC smart house have increased in recent years. However, due to fluctuating power from renewable energy sources and loads, supply–demand balancing fluctuations of power system become problematic. Therefore, “smart grid” has become very popular in the worldwide. This article presents a methodology for optimal operation of a smart grid to minimize the interconnection point power flow fluctuations. To achieve the proposed optimal operation, we use distributed controllable loads such as battery and heat pump. By minimizing the interconnection point power flow fluctuations, it is possible to reduce the maximum electric power consumption and the electric cost. This system consists of photovoltaics generator, heat pump, battery, solar collector, and load. In order to verify the effectiveness of the proposed system, MATLAB is used in simulations.

scholarly journals Modern trends of the world market of electrical equipment

2021 ◽  
pp. 5-9
Author(s):  
Tetiana AVERIKHINA ◽  
Maryna BURIACHENKO ◽  
Valeriia VASYLIEVA
Keyword(s):  
Renewable Energy ◽  
Smart Grid ◽  
Distribution System ◽  
Distribution Systems ◽  
Renewable Energy Sources ◽  
Electrical Equipment ◽  
World Market ◽  
Global Market ◽  
The World ◽  
Transmission And Distribution

Introduction. The world market of electrical equipment is developing very fast. There are many companies in the market that sell electrical equipment, among them there are companies that occupy leading positions. Today, the world market of energy engineering is estimated at 87 billion dollars per year, based on the structural dynamics of growth, the annual volume can reach 110-115 billion dollars per year until 2025. The global market for energy equipment service in 2020 is 31.7 billion dollars, including: LTSA (long-term service) 47 %, modernization – 20 %, field service – 24 %, engineering – 9 %. The purpose of the paper is to analyze the world market of electrical equipment, determine sales, business growth. The list of leaders in electrical equipment on the world market is considered. Results. The main trends in the world today are the following areas: development of DC transmission system, cable lines for underwater laying and cable for connections of renewable energy sources to reduce energy transmission costs through the capabilities of existing transmission lines, through network voltages and innovative design solutions and installation methods. The amendment for these trends shows us the world leaders in the electrical market, such as Legrand, Schneider Electric, ABB, Siemens, DEKraft, SASSIN, EKF, etc., R&D costs are 3.5–5 % of profits (over 60 years). Thus, we can conclude that the global market for cable networks is developing rapidly. This market is expected to grow in the development of smart grid technologies, renewable energy generation and initiatives to modernize the transmission and distribution system. Conclusion. That the global cable ladder market is developing rapidly. This market is expected to grow in the development of smart grid technologies, renewable energy cultivation and government initiatives to modernize transmission and distribution systems.

scholarly journals Economic Optimization of Resource Use Based on Smart Grid

2020 ◽  
pp. 37-47
Author(s):  
O.V. Kubatko ◽  
V.M. Ignatchenko ◽  
S.V. Shaparenko ◽  
I.A. Starodub ◽  
D.O. Yaryomenko
Keyword(s):  
Renewable Energy ◽  
Smart Grid ◽  
Energy Policy ◽  
Distribution Systems ◽  
Fossil Fuels ◽  
Renewable Energy Sources ◽  
Energy Sector ◽  
Energy Sources ◽  
Economic Optimization ◽  
Smart Energy Systems

There are significant changes in society's approaches to the energy policy development in the modern world. It is observable a transition from the old model of the energy sector maintenance, which was dominated by large producers, inefficient networks, fossil fuels, imperfect competition in the markets of natural gas, coal, electricity - to a new model, which creates a more competitive environment and equalizes opportunities for development and the dominance one of the types energy production or sources of fuel supply. The traditional network is based on centralized power plants that supply electricity to consumers through simple one-way transmission and distribution systems. The bulk of the current electricity generation capacity in Ukraine is generated by fossil fuels, which significantly contributes to the increase of the carbon dioxide concentration in the Earth's atmosphere and has a corresponding negative consequences for the climate. At the same time, modern preferences are given to increasing energy efficiency and the use of energy from renewable and alternative sources. Implementation of adaptation and prevention measures for climate change is also one of the priorities of global energy development. The renewable energy promotion is causing new economic and scientific challenges for Ukraine. However, at the same time it opens new perspectives for the search and implementation of innovative developments in the field of extraction, processing of fossil fuels, energy supply and consumption, which leads to create a new energy policy of the state. The article discusses theoretical and methodological approaches that reveal the benefits of Smart Grid using. It is emphasized that ensuring energy security and environmental sustainability of the energy sector should be based on the use of renewable energy sources. The article analyzes the main factors that can affect the development of Smart Grid technology. Also, the article describes the best experience of the EU countries, which are introducing smart energy systems for the economic optimization of renewable energy sources use.

scholarly journals Effect of Renewable Energy and Electric Vehicles on Smart Grid

2015 ◽  
Vol 2 (1-2.) ◽  
Author(s):  
Alaa A. Zaky
Keyword(s):  
Renewable Energy ◽  
Smart Grid ◽  
Electric Vehicles ◽  
Power Plants ◽  
Distribution Systems ◽  
Renewable Energy Sources ◽  
Future Research ◽  
Electricity Grid ◽  
Vehicle To Grid ◽  
Energy Technologies

Global electricity demands are increasing at rapid pace. Energy supply, their usage and technologies involved need to be more economical, environment friendly and socially sustainable. Efforts are being done all over the globe to reduce this green house effect; and renewable energy technologies to combat climate changes, which require extensive changes to the current electricity generation and distribution systems. To meet this goal, it is required to optimize the grid operations and available resources to meet the ever increasing energy demands in an efficient, effective and environment sustainable way. So strong and huge interests on smart grid have increased extensively in recent years around the world. This scenario could be a promising reason for future research in this area. This next form of electricity grid will be able to manage various parts of power production from power plants to the customers. Renewable energy sources appear strongly in smart grid so in this paper the effect of this sources will be studied also electric vehicles have a great effect on smart grid infrastructure ,communication and control this paper will discuss this effect if it come from the electric vehicle mode or vehicle to grid mode.

scholarly journals Review on Control Techniques for EV Bidirectional Wireless Chargers

Electronics ◽  
2021 ◽  
Vol 10 (16) ◽  
pp. 1905
Author(s):  
Alicia Triviño ◽  
Jose M. Gonzalez-Gonzalez ◽  
Miguel Castilla
Keyword(s):  
Renewable Energy ◽  
Smart Grid ◽  
Electric Vehicles ◽  
Power Flow ◽  
Power Converters ◽  
Reactive Power ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Control Techniques ◽  
Reactive Power Flow

Due to their flexibility, Electric Vehicles (EVs) constitute an important asset for the integration of renewable energy sources in the Smart Grid. In particular, they should have a dual role: as a controllable load and as a mobile generator with a low inertia. To perform these tasks, chargers must provide the electronics with a power flow from the grid to the vehicle and vice versa. This bidirectionality can also be implemented in wireless chargers. The power converters, the compensation networks and the coil misalignment must be considered when designing the control of these systems. This paper presents a review about the proposed algorithms to control the active and the reactive power flow in a bidirectional wireless charger.

scholarly journals Overview and Tools of Asset Management in Renewable Energy Based Smart Grid

2018 ◽  
Vol 7 (2.18) ◽  
pp. 22
Author(s):  
Surender Reddy Salkuti
Keyword(s):  
Renewable Energy ◽  
Smart Grid ◽  
Asset Management ◽  
Environmental Sustainability ◽  
Distribution Systems ◽  
Cost Benefit Analysis ◽  
Cost Benefit ◽  
Optimal Operation ◽  
Renewable Energy Resources ◽  
Time Data

This paper presents the importance, issues and challenges related to Smart Grid. It also evaluates various approaches for Smart Grid planning and operation. It discusses tools for asset management and their applicability to the next generation grid. The proper asset management reduces the risk of equipment failure, extends the equipment life and minimizes the occurrence of unplanned outages. Aging assets, uncertainty in load demand profile and renewable energy resources, and demand management create a challenge for the optimal operation and maintenance of electrical grid. Frequent condition assessment with asset audit enables a comprehensive assessment of the asset in question and includes objective and transparent asset condition information recommendations for the improved environmental sustainability. This paper addresses the challenges and opportunities to improve transmission and distribution systems asset maintenance. This paper also presents the asset replacement alternatives. It presents the cost-benefit analysis of asset management using the information/real time data from the utility company. This paper will serve a guide for doing the asset management to the electrification  process, investment and  recovery to sustain reliable and efficient power delivery.

scholarly journals Microgrids as Flexible and Network-Connected Grid Assets in Active Distribution Systems

2018 ◽  
Vol 2018 ◽  
pp. 1-7 ◽  
Author(s):  
Lei Shao ◽  
Xu Zhou ◽  
Ji Li ◽  
Hongli Liu ◽  
Xiaoqi Chen
Keyword(s):  
Renewable Energy ◽  
Distribution System ◽  
Distribution Systems ◽  
Renewable Energy Sources ◽  
Optimal Operation ◽  
Operation Strategy ◽  
Energy Integration ◽  
Modern Distribution ◽  
High Penetration ◽  
Networked Microgrids

The functionalities of microgrids are detailed and thereby expanded in active distribution systems. A versatile and coordinated operation among multiple microgrids is proposed to facilitate the integration of renewable energy sources (RES) in modern distribution grids. Particularly, to meet the requirements of high penetration level of renewables (e.g., photovoltaics and small hydro), more than one networked controlled microgrids are deployed simultaneously in different locations of a distribution system. Therefore, local RES can be aggregated in each microgrids. In order to satisfy the latest standards in terms of renewable energy integration (i.e., IEEE Std. 1547 Rev), an optimal operation strategy is designed to coordinate the operation of multiple microgrids. A simulation model is implemented in MATLAB to validate the proposed networked microgrids and the corresponding operation strategy.

scholarly journals A Proposed Uncertainty Reduction Criterion of Renewable Energy Sources for Optimal Operation of Distribution Systems

2022 ◽  
Vol 12 (2) ◽  
pp. 623
Author(s):  
Eman Ali ◽  
Ragab El-Sehiemy ◽  
Adel Abou El-Ela ◽  
Marcos Tostado-Véliz ◽  
Salah Kamel
Keyword(s):  
Renewable Energy ◽  
Power System ◽  
Distribution Systems ◽  
Renewable Energy Sources ◽  
Uncertainty Reduction ◽  
Optimal Operation ◽  
Energy Sources ◽  
System Operation ◽  
Power System Operation ◽  
Reduction Strategies

Power system operation and planning studies face many challenges with increasing of renewable energy sources (RESs) penetration. These challenges revolve around the RESs uncertainty and its applications on probabilistic forecasting, power system operation optimization and power system planning. This paper proposes a novel and effective criterion for uncertainties modeling of the RESs as well as system loads. Four sorting stages are applied for the proposed uncertainty cases reduction. Added to that, it proposes three different uncertainty reduction strategies for obtaining different accuracy and speed options. The proposed reduction strategies are tested on medium and large scale distribution systems; IEEE 69-bus and 118-bus systems. The obtained results verify the effectiveness of the proposed criterion in uncertainties modeling in distribution systems with acceptable level of accuracy.

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