scholarly journals Cluster of Single-Board Computers at the Edge for Smart Grids Applications

2021 ◽  
Vol 11 (22) ◽  
pp. 10981
Author(s):  
Safae Bourhnane ◽  
Mohamed Riduan Abid ◽  
Khalid Zine-dine ◽  
Najib Elkamoun ◽  
Driss Benhaddou
Keyword(s):  
Smart Grids ◽  
Programming Model ◽  
Low Cost ◽  
Renewable Energy Sources ◽  
Process Data ◽  
Smart Meters ◽  
To Come ◽  
The One ◽  
Cloud Servers ◽  
And Control

Increases in power demand and consumption are very noticeable. This increase presents a number of challenges to the traditional grid systems. Thus, there is the need to come up with a new solution that copes with the stringent demand on energy and provides better power quality, which gives a better experience to the end users. This is how the concept of smart grids (SG) came to light. SGs have been introduced to better monitor and control the power produced and consumed. In addition to this, SGs help with reducing the electricity bill through the integration of renewable energy sources. The underlying smartness of the SGs resides in the flow of information in addition to the flow of energy. Information/data flowing implies the use of smart sensors and smart meters that sense and send data about the power produced and consumed, and the data about the environment where they are deployed. This makes SGs a direct application of IoT. In this paper, we are implementing an edge platform that is based on single-board computers (SBCs) to process data stemming from SG. The use of SBCs is driven by the energy efficiency and cost effectiveness concepts that the SG is trying to apply. The platform in question is tested against a distributed job that averages random numbers using Hadoop’s MapReduce programming model. The SBC that we are using in this implementation is the NVIDIA Jetson Developer Kit. The results of this work show that a cluster of SBCs is low-cost, easy to maintain, and simple to deploy, which makes it a great candidate for providing edge computing. Although it revealed a performance that beat the one of the remote cloud servers, it could not outperform the single-computer edge platform.

scholarly journals Integration and control of lithium-ion BESSs for active network management in smart grids: Sundom smart grid backup feeding case

2021 ◽  
Author(s):  
Chethan Parthasarathy ◽  
Hossein Hafezi ◽  
Hannu Laaksonen
Keyword(s):  
Smart Grid ◽  
Network Management ◽  
Smart Grids ◽  
Reactive Power ◽  
Renewable Energy Sources ◽  
Lithium Ion ◽  
Active Network ◽  
Li Ion ◽  
Grid Side ◽  
And Control

AbstractLithium-ion battery energy storage systems (Li-ion BESS), due to their capability in providing both active and reactive power services, act as a bridging technology for efficient implementation of active network management (ANM) schemes for land-based grid applications. Due to higher integration of intermittent renewable energy sources in the distribution system, transient instability may induce power quality issues, mainly in terms of voltage fluctuations. In such situations, ANM schemes in the power network are a possible solution to maintain operation limits defined by grid codes. However, to implement ANM schemes effectively, integration and control of highly flexible Li-ion BESS play an important role, considering their performance characteristics and economics. Hence, in this paper, an energy management system (EMS) has been developed for implementing the ANM scheme, particularly focusing on the integration design of Li-ion BESS and the controllers managing them. Developed ANM scheme has been utilized to mitigate MV network issues (i.e. voltage stability and adherence to reactive power window). The efficiency of Li-ion BESS integration methodology, performance of the EMS controllers to implement ANM scheme and the effect of such ANM schemes on integration of Li-ion BESS, i.e. control of its grid-side converter (considering operation states and characteristics of the Li-ion BESS) and their coordination with the grid side controllers have been validated by means of simulation studies in the Sundom smart grid network, Vaasa, Finland.

scholarly journals Multi-Blockchain-Based IoT Data Processing Techniques to Ensure the Integrity of IoT Data in AIoT Edge Computing Environments

Sensors ◽  
2021 ◽  
Vol 21 (10) ◽  
pp. 3515
Author(s):  
Sung-Ho Sim ◽  
Yoon-Su Jeong
Keyword(s):  
Low Cost ◽  
Third Party ◽  
Monitoring And Control ◽  
Constant Size ◽  
Computing Environments ◽  
Iot Devices ◽  
Cloud Servers ◽  
The Cost ◽  
Processing Techniques ◽  
And Control

As the development of IoT technologies has progressed rapidly recently, most IoT data are focused on monitoring and control to process IoT data, but the cost of collecting and linking various IoT data increases, requiring the ability to proactively integrate and analyze collected IoT data so that cloud servers (data centers) can process smartly. In this paper, we propose a blockchain-based IoT big data integrity verification technique to ensure the safety of the Third Party Auditor (TPA), which has a role in auditing the integrity of AIoT data. The proposed technique aims to minimize IoT information loss by multiple blockchain groupings of information and signature keys from IoT devices. The proposed technique allows IoT information to be effectively guaranteed the integrity of AIoT data by linking hash values designated as arbitrary, constant-size blocks with previous blocks in hierarchical chains. The proposed technique performs synchronization using location information between the central server and IoT devices to manage the cost of the integrity of IoT information at low cost. In order to easily control a large number of locations of IoT devices, we perform cross-distributed and blockchain linkage processing under constant rules to improve the load and throughput generated by IoT devices.

scholarly journals Modeling, Design Procedure and Control of a Low-Cost High-Gain Multi-Input Step-Up Converter

Electronics ◽  
2019 ◽  
Vol 8 (12) ◽  
pp. 1424
Author(s):  
Edgardo Netzahuatl ◽  
Domingo Cortes ◽  
Marco A. Ramirez-Salinas ◽  
Jorge Resa ◽  
Leobardo Hernandez ◽  
...  
Keyword(s):  
Nonlinear Model ◽  
Low Cost ◽  
Renewable Energy Sources ◽  
Design Procedure ◽  
Input Voltage ◽  
High Gain ◽  
Grid Systems ◽  
Real Behavior ◽  
Different Characteristics ◽  
And Control

The use of several different sources to feed a load jointly is convenient in many applications, in particular those where two or more renewable energy sources are employed. These applications include energy harvesting, hybrid vehicles, and off-grid systems. A multi-input converter able to admit sources of different characteristics and select the output power of each source is necessary in such applications. Several topologies of multi-input converters have been proposed to this aim; however, most of them are controlled by simple strategies based on a small signal model of multi-input converters. In this work, a low cost high gain step-up multi-input converter is analyzed. A nonlinear model is derived. Using this model, a detailed design procedure is proposed. A 500 W converter prototype was constructed to confirm that the model predicted the real behavior of the converter. Using the nonlinear model, indirect voltage control of basic converters was extended to the multi-input converter. The obtained controller had a fast performance, and it was robust under load and input voltage variations. With the obtained model, the proposed design procedure, and the controller, a converter that was initially proposed for photovoltaic applications was enabled to be used in a broader range of applications. The herein exposed ideas for modeling, the design procedure, and control could be also applied to other multi-input converters.

scholarly journals Nonlinear control of GTI for stabilizing future smart grids

2020 ◽  
Vol 11 (3) ◽  
pp. 1268
Author(s):  
Salam Ibrahim Khather
Keyword(s):  
Control Systems ◽  
Distributed Generation ◽  
Smart Grids ◽  
High Performance ◽  
Low Cost ◽  
Control Parameters ◽  
Leakage Currents ◽  
Control Techniques ◽  
Control Scheme ◽  
And Control

The most important components of the distributed generation frameworks is the GTIs which is an interface amidst the utility and the source of energy. The recent years have seen an increased interest in the design and usage of GTIs due to its smaller weight and size, low cost and higher efficiency. But the problem of leakage currents in the transformerless inverter that is dependant on its topology and control scheme needs to be looked into carefully. Also, the high performance of the GTI requires a stringent control and various control systems are being developed and applied to the GTIs. This paper reviews the various topologies that are classified based on the attributes of the leakage current and the method of decoupling. Further it reviews and compares the different control techniques applied to the GTIs with respect to the frame of reference, controller, modulation technique and the control parameters considered.

scholarly journals An Analysis of China’s Proposal to Control and Centrally Manage the Internet

2020 ◽  
Vol 8 (2) ◽  
pp. 159-166
Author(s):  
Alan Dupont
Keyword(s):  
Service Providers ◽  
Radical Change ◽  
The Internet ◽  
Security Issue ◽  
Internet Service ◽  
The Us ◽  
To Come ◽  
The One ◽  
User Friendly ◽  
And Control

Governments and telecommunications companies have invested heavily in measures designed to protect overall system security. But these measures may not be enough if China is successful in setting the rules and designing the architecture of a new internet, because the one-party state’s internet vision reflects authoritarian values that are diametrically opposed to ours. China has suggested a radical change to the way the internet functions to the International Telecommunications Union. This would bake authoritarianism into the architecture underpinning the web, giving state-run internet service providers granular control over citizens’ use. The authoritarian state’s ability to monitor and control undersea fibre optic cables is emerging as a major national security issue for Australia and other democracies. The world could split into two separate information worlds, one led by the US and the other by China. A Balkanised internet is not in Australia’s interest. We must engage with friends and allies to come up with a fit-for-purpose world wide web that is more efficient, secure, user friendly and compatible with democracy.

scholarly journals A Low-Cost Secure IoT Mechanism for Monitoring and Controlling Polygeneration Microgrids

2020 ◽  
Vol 10 (23) ◽  
pp. 8354
Author(s):  
Josué Martínez-Martínez ◽  
Diego Aponte-Roa ◽  
Idalides Vergara-Laurens ◽  
Wayne W. Weaver
Keyword(s):  
Renewable Energy ◽  
Ieee 802.15.4 ◽  
Low Cost ◽  
Renewable Energy Sources ◽  
Networked Control System ◽  
Energy Sources ◽  
Diverse Range ◽  
Network Intrusion ◽  
And Control ◽  
Monitor And Control

The use of Internet-connected devices at homes has increased to monitor energy consumption. Furthermore, renewable energy sources have also increased, reducing electricity bills. However, the high cost of the equipment limits the use of these technologies. This paper presents a low-cost secured-distributed Internet of Things (IoT) system to monitor and control devices connected in a polygeneration microgrid, as a combined power system for local loads with renewable sources. The proposed mechanism includes a Wireless Sensor Actuator Networked Control System that links network nodes using the IEEE 802.15.4 standard. The Internet communication enables the monitor and control of devices using a mobile application to increase the efficiency. In addition, security mechanisms are implemented at several levels including the authentication, encryption, and decryption of the transmitted data. Furthermore, a firewall and a network intrusion detection-and-prevention program are implemented to increase the system protection against cyber-attack. The feasibility of the proposed solution was demonstrated using a DC microgrid test bench consisting of a diverse range of renewable energy sources and loads.

Exploring competitive features of stationary sodium ion batteries for electrochemical energy storage

2019 ◽  
Vol 12 (5) ◽  
pp. 1512-1533 ◽  
Author(s):  
Tiefeng Liu ◽  
Yaping Zhang ◽  
Zhanguo Jiang ◽  
Xianqing Zeng ◽  
Jiapeng Ji ◽  
...  
Keyword(s):  
Energy Storage ◽  
Smart Grids ◽  
Large Scale ◽  
Low Cost ◽  
Renewable Energy Sources ◽  
Sodium Ion ◽  
Great Promise ◽  
Sodium Ion Batteries ◽  
Power Performance ◽  
Climate Adaptability

Owing to the four features summarized in this review, i.e., low-cost resource, high-power performance, all-climate adaptability and full-batty recyclability, sodium ion batteries show great promise for large-scale energy storage systems used for the application of renewable energy sources and smart grids.

Real-time smart meters network for energy management

ACTA IMEKO ◽  
2013 ◽  
Vol 2 (1) ◽  
pp. 40 ◽  
Author(s):  
Giuseppe Del Prete ◽  
Daniele Gallo ◽  
Carmine Landi ◽  
Mario Luiso
Keyword(s):  
Real Time ◽  
Energy Management ◽  
Smart Grids ◽  
Energy Use ◽  
Low Cost ◽  
Quality Parameters ◽  
Smart Meters ◽  
Authentication Code ◽  
Customer Data ◽  
The Web

In this paper, an architecture of a low-cost ARM-based Smart Metering network is presented. The system is designed to be suitable for Smart Grids applications aimed to a more efficient energy use according to the article 13 of Directive 2006/32/EC. The network is composed by several slave smart meters that continuously monitor loads and energy generators to make available information in real-time such as power and energy consumption/generation and several power quality parameters communicating them via CAN bus to specific master device called data aggregator. This device, integrating the information coming from field devices (energy demands of loads, the current energy production and co-generator status), with information obtained through the web access (a prevision on the expected availability of energy produced by renewable sources, current and future energy price, customer remote setting), can take decisions to implement a suitable energy management aimed to cost saving or whatever else strategy chosen by customer. Data aggregator also allows checking current consumption locally, thanks to a display, and remotely, using the web browser access. To prevent external attacks a low computational burden protection software based on Message Authentication Code (MAC) has been implemented. Finally, characterization test of realized apparatus have shown good performance both in terms of communication delays and measurement uncertainty.

scholarly journals Evaluation of a LoRa Mesh Network for Smart Metering in Rural Locations

Electronics ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 751
Author(s):  
Anup Marahatta ◽  
Yaju Rajbhandari ◽  
Ashish Shrestha ◽  
Ajay Singh ◽  
Anup Thapa ◽  
...  
Keyword(s):  
Smart Grids ◽  
Cost Effective ◽  
Energy System ◽  
Mesh Network ◽  
Smart Metering ◽  
Monitoring And Control ◽  
Smart Meters ◽  
Load Monitoring ◽  
Iot Devices ◽  
And Control

Accompanying the advancement on the Internet of Things (IoT), the concept of remote monitoring and control using IoT devices is becoming popular. Digital smart meters hold many advantages over traditional analog meters, and smart metering is one of application of IoT technology. It supports the conventional power system in adopting modern concepts like smart grids, block-chains, automation, etc. due to their remote load monitoring and control capabilities. However, in many applications, the traditional analog meters still are preferred over digital smart meters due to the high deployment and operating costs, and the unreliability of the smart meters. The primary reasons behind these issues are a lack of a reliable and affordable communication system, which can be addressed by the deployment of a dedicated network formed with a Low Power Wide Area (LPWA) platform like wireless radio standards (i.e., LoRa devices). This paper discusses LoRa technology and its implementation to solve the problems associated with smart metering, especially considering the rural energy system. A simulation-based study has been done to analyse the LoRa technology’s applicability in different architecture for smart metering purposes and to identify a cost-effective and reliable way to implement smart metering, especially in a rural microgrid (MG).

scholarly journals Sistem Informasi Penjualan Pada Toko Al-Idan Variasi Motor Kelurahan Karang Baru, Kecamatan Mataram

2018 ◽  
Vol 1 (1) ◽  
pp. 46
Author(s):  
Yulia Arianti ◽  
Maulana Ashari
Keyword(s):  
Customer Service ◽  
Spare Parts ◽  
Process Data ◽  
Goods And Services ◽  
Long Time ◽  
Online Business ◽  
To Come ◽  
The Many ◽  
Data Documentation ◽  
And Control

Current trends online shopping via the Internet has mushroomed in Indonesia, even very well known by the general public. The many diverse ease of shopping and various kinds of goods and services offered, making the online shop to make Indonesian society as one of the "shopping" a new addition to the shopping center. The proliferation of online shop the many business opportunities targeting teens as consumers., The advantages of online business shop apart easily in the promotion, are also highly efficient because it only requires a subscription fee for running the business. Production or sales system settings influence the level of acceptance of the company's revenue. Therefore, companies have to actually supervise and control the activities of sales and inventory by implementing an adequate system, so that the sales target can be achieved ,. Moreover how the transaction by writing to the bill of sale that takes a long time, which resulted in the customer service to be slower. Therefore store Al-Idan variation Mataram motors require a sales and information systems Stock items that can help process data documentation and solve the problems of data loss. With the computerized system, makes the process of selling and stock goods becomes faster. During this process of recording sales data and inventory simply by collecting a memorandum - a memorandum at a time and record it in a book report. With the web site at Al-Idan be easier for consumers to buy motorcycle accessories and spare parts that do not need to come to the store.

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