Improving Battery Lifetime of Gridable Vehicles and System Reliability in the Smart Grid

2015 ◽  
Vol 9 (3) ◽  
pp. 989-999 ◽  
Author(s):  
Uttam Kumar Debnath ◽  
Iftekhar Ahmad ◽  
Daryoush Habibi ◽  
Ahmed Yousuf Saber
Keyword(s):  
Smart Grid ◽  
System Reliability ◽  
Battery Lifetime

Optimal Planning and Management of Hybrid Vehicles in Smart Grid

2015 ◽  
Vol 37 ◽  
pp. 253
Author(s):  
Seyed Mohammad Bagher Mortazavi ◽  
Nabiolah Shiri ◽  
Mohammad Sadegh Javadi ◽  
Saeed Daneshvar Dehnavi
Keyword(s):  
Smart Grid ◽  
Electric Vehicles ◽  
System Reliability ◽  
Cost Reduction ◽  
Telecommunication Network ◽  
Hybrid Vehicles ◽  
Optimal Planning ◽  
Power Network ◽  
Index Reduction ◽  
Non Linear

Smart grid can be expressed as a combination of power network substructures with an extensive telecommunication network which is able to provide a two-way communication and use of advanced sensors in order improve efficiency, system reliability, transport security, and power consumption. Loads in this network are divided into two groups, linear and non-linear. The majority of these loads on the network, such as rectifiers, electric vehicles are non-linear. The non-linear loads can cause odd harmonics in the network and can damage transformers. In this article, management and planning of hybrid vehicles for total harmonic index reduction and also annual cost reduction has been considered.

New Development in Relay Protection for Smart Grid – Protection Function Development

2013 ◽  
Vol 291-294 ◽  
pp. 2109-2118
Author(s):  
Pei Ding ◽  
Fei Guo ◽  
Xu Tao Wu ◽  
Xiu Guang Li ◽  
Zhen Hua Yan ◽  
...  
Keyword(s):  
Control System ◽  
Smart Grid ◽  
System Reliability ◽  
State Monitoring ◽  
Protection Relay ◽  
Overload Protection ◽  
New Development ◽  
High System ◽  
Line Overload ◽  
Load Generation

The requirement is that the protection relay provides early warning for the protected device in order to guarantee the system reliability and high system security after fault is cleared. The development of new protection functions for smart grid is introduced in this paper. The principles and techniques of integrated state monitoring and main protection techniques for transformers are presented. The principles and techniques of transmission cross section protection which has developed from the line overload protection technique is also presented to show its application to avoid cascading overload tripping. Finally an islanding control system is presented. In the control system the islanding center is responsible for the co-ordination, and optimization and out-of-step relays are responsible for complimentary action. The aim of islanding control is that load-generation imbalance in each island is minimized and generators in each island are not out of step any more.

Model Centric Approach for Monte Carlo Assessment of Storm Restoration and Smart Grid Automation

2014 ◽  
Author(s):  
Danling Cheng ◽  
Ahmet Onen ◽  
Reza Arghandeh ◽  
Jaesung Jung ◽  
Robert Broadwater ◽  
...  
Keyword(s):  
Monte Carlo Simulation ◽  
Monte Carlo ◽  
Smart Grid ◽  
System Reliability ◽  
Circuit Model ◽  
Failure Rates ◽  
Equipment Failure ◽  
Cost Benefits ◽  
Restoration Algorithm ◽  
Detailed Circuit

A model centric approach for Monte Carlo simulation for evaluating the economic and reliability benefits of automated switches for storm restoration is presented. A very detailed circuit model with over 20,000 individual customers modeled is used in the simulation. The simulation uses non-constant equipment failure rates based upon actual utility measurements. As part of the Monte Carlo storm simulation, a reconfiguration for restoration algorithm is employed in determining the response to each outage. The reconfiguration for restoration algorithm can work with either manual or automated switches, or both. System reliability with and without automated switching devices is investigated. Cost benefits as well as reliability benefits are considered.

scholarly journals Optimal Measuring and Energy Planning of Smart Grid Considering the Battery Lifetime by Using FFA

2021 ◽  
Vol 12 (6) ◽  
pp. 2324-2337
Author(s):  
Shaik Karimulla, K. Ravi
Keyword(s):  
Smart Grid ◽  
Power Supply ◽  
Economic Planning ◽  
Energy Planning ◽  
Operational Cost ◽  
Battery Lifetime ◽  
Procedure Cost ◽  
Energy Assets ◽  
Optimum Estimate ◽  
The Ideal

The ceaselessly developing request for power in this world privileges a productive and dependable framework of energy sources. Disseminated energy assets such as wind-based energy and solar-based energy can remain shared inside a smart grid to source energy to the utilizers in a feasible way. In arranging to safeguard the extra dependable and conservative energy source, the battery-operated capacity system is coordinated inside the smart grid. In this objective, the operational cost of smart grid is decreased by financial planning in view of the ideal estimate of the battery-operated system and the period of battery procedure. Hence, the actual period battery procedure cost is modelled in view of the perceptiveness of release individually in the time interim. In addition, the anticipated economic planning with battery-operated measuring is improved by using the Fire-Fly algorithm (FFA). The adequacy of FFA is associated through other metaheuristic strategies in relations of execution estimation files, which remain price of power also misfortune of power supply possibility. The proposed method results show that this method diminishes the price of the grid and also achieves the optimum estimate of the battery-operating to the smart grid.

scholarly journals A Security Key Recovery System with Channel Quality Awareness for Smart Grid Applications

1970 ◽  
Vol 10 (1) ◽  
pp. 1-14
Author(s):  
Prachya Huadpaknam ◽  
Chaiyod Pirak ◽  
Rudolf Mathar
Keyword(s):  
Smart Grid ◽  
Outage Probability ◽  
System Reliability ◽  
Amplify And Forward ◽  
Session Key ◽  
Key Recovery ◽  
Channel Quality ◽  
Recovery System ◽  
Grid Applications ◽  
Quality Awareness

In this paper, a security key recovery system with channel quality awareness (SKRS-CQA) for smart grid applications has been proposed. Firstly, the proper key recovery agents (KRAs) are determined based on the signal-to-noise ratio (SNR) outage probability. The result of such selection includes the number and the index of selected KRAs. Then, the session key (KS) of a Smart Meter Unit (SMU) will be divided into many different pieces according to the proposed key partitioning algorithm and stored in the selected KRAs for the future key recovery if the data concentrator unit (DCU) has lost the key in unexpected events. The outage probability of SNR, the probability of KRA failure, and the probability of key compromising are also investigated. In addition, a 128-bit AES-GCM encryption algorithm is used in each KRA for authentication and identification mechanisms based on a DLMS/COSEM protocol. As shown in the system performance analysis, the system reliability, the system availability, and the data confidentiality have been improved compared with the conventional scheme. Moreover, a cooperative communication network with an amplify-and-forward relaying protocol and an optimal power allocation has been employed for improving the system reliability. From computer simulation results, it showed that the reliability of the proposed system with a cooperative scheme has been improved significantly.

Reliability Importance Measures-Based Analysis of Substation Communication Network

2021 ◽  
pp. 48-66
Author(s):  
Rakhi Kamra ◽  
G. L. Pahuja
Keyword(s):  
Communication Network ◽  
Smart Grid ◽  
Communication System ◽  
System Reliability ◽  
Allocation Of Resources ◽  
Main Aspect ◽  
Monitoring Equipment ◽  
Component Importance ◽  
Improvement Potential ◽  
Critical Components

Smart grid can work effectively only when a reliable, fast communication network is available. The communication network is a prerequisite to connect different protection, control, and monitoring equipment within the substation. Ethernet fulfills all the requisites such as reliable, fast, secure, interoperable, LAN-based communication system for smart substations. Therefore, the main aspect is to improve the reliability of the network by prioritizing the critical components by using the knowledge of component importance measures (CIM). In this chapter, analysis of IEC 61850 ethernet-based substation communication network (SCN) architectures has been examined using various reliability importance measures (RIM). The importance measures namely Birnbaum, improvement potential, criticality importance, and reliability achievement worth have given their justified rankings of the various components of SCN architectures. The practice of these CIMs works towards the identification of the components that can be allocation of resources for the improvement of system reliability.

scholarly journals Smart grids and power system reliability

2021 ◽  
Vol 31 (31) ◽  
pp. 155-166
Author(s):  
Milica Dilparić-Cakić ◽  
Mihajlo Ristić
Keyword(s):  
Smart Grid ◽  
Power System ◽  
Electricity Market ◽  
System Reliability ◽  
Smart Grids ◽  
Weather Conditions ◽  
Power Delivery ◽  
Calm Weather

Smart grids and the reliability of the power system issues are discussed in the paper. Smart Grids have emerged as a mean to increase the efficiency of energy systems around the world. Based on the analysis of Smart Grid implementation, liberalization of the electricity market and system reliability, it is concluded that Smart Grid has not improved the reliability of the power system The reliability can be improved only by constant investment in production and capital plants of the system, with optimal use of smart grids.. The paper presents the case study of disintegration of the power system under calm weather conditions, and case of low quality of power delivery where smart grids did not help enough.

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