scholarly journals Effect of High Level Penetration of Grid Connected Photovoltaic to the Low Voltage Side of the Power System in UK

2020 ◽  
Vol 9 (3) ◽  
pp. 36-39
Author(s):  
Safaa Abdulhussein Hasson Al-Abboodi
Keyword(s):  
Power System ◽  
Low Voltage ◽  
High Level

Protection Scheme for DC Microgrid Distribution System

2012 ◽  
Vol 614-615 ◽  
pp. 1661-1665
Author(s):  
Ling Hui Deng ◽  
Zhi Xin Wang ◽  
Jian Min Duan
Keyword(s):  
Distribution System ◽  
Cost Efficiency ◽  
Power Flow ◽  
Low Voltage ◽  
Dc Microgrid ◽  
Protection Scheme ◽  
High Level ◽  
Bidirectional Power Flow ◽  
Efficiency And Reliability ◽  
Laboratory Prototype

The low voltage DC (LVDC) distribution system is a new concept and a promising technology to be used in the future smart distribution system having high level cost-efficiency and reliability. In this paper, a low-voltage (LV) DC microgrid protection system design is proposed. Usually, an LVDC microgrid must be connected to an ac grid through converters with bidirectional power flow and, therefore, a different protection scheme is needed. This paper describes practical protection solutions for the LVDC network and an LVDC system laboratory prototype is being experimentally tested by MATLAB/SIMULINK. The results show that it is possible to use available devices to protect such a system. But other problems may arise which needs further study.

An integrated low-voltage rated HTS DC power system with multifunctions to suit smart grids

2015 ◽  
Vol 510 ◽  
pp. 48-53 ◽  
Author(s):  
Jian Xun Jin ◽  
Xiao Yuan Chen ◽  
Ronghai Qu ◽  
Hai Yang Fang ◽  
Ying Xin
Keyword(s):  
Power System ◽  
Smart Grids ◽  
Low Voltage ◽  
Dc Power

Low Voltage Bulk Power System Restoration Simulation

1981 ◽  
Vol PER-1 (11) ◽  
pp. 28-29
Author(s):  
Edward J. Simburger ◽  
Francis J. Hubert
Keyword(s):  
Power System ◽  
Low Voltage ◽  
Power System Restoration ◽  
System Restoration ◽  
Bulk Power

Research on the Reactive Power Optimization

2013 ◽  
Vol 385-386 ◽  
pp. 991-994
Author(s):  
Yan Yan Wang ◽  
Yan Song Li
Keyword(s):  
Power System ◽  
Reactive Power ◽  
Power Optimization ◽  
Low Voltage ◽  
Pso Algorithm ◽  
Reactive Power Optimization ◽  
Voltage Level ◽  
Line Network ◽  
Improved Pso

The power system is facing line losses, low voltage level and some other issues, this article begin with the point of the reactive power optimization, and through with the improved PSO algorithm, we find a way to reduce the line network loss.

scholarly journals Cyber Security for Smart Grid, Cryptography, and Privacy

2011 ◽  
Vol 2011 ◽  
pp. 1-8 ◽  
Author(s):  
Swapna Iyer
Keyword(s):  
Smart Grid ◽  
Power System ◽  
Cyber Security ◽  
Key Management ◽  
Different Types ◽  
Management Techniques ◽  
Security Concerns ◽  
High Level ◽  
Efficiency And Reliability ◽  
Security Concern

The invention of “smart grid” promises to improve the efficiency and reliability of the power system. As smart grid is turning out to be one of the most promising technologies, its security concerns are becoming more crucial. The grid is susceptible to different types of attacks. This paper will focus on these threats and risks especially relating to cyber security. Cyber security is a vital topic, since the smart grid uses high level of computation like the IT. We will also see cryptography and key management techniques that are required to overcome these attacks. Privacy of consumers is another important security concern that this paper will deal with.

scholarly journals A Mutual Blocking Technology Applied to Dual Power Source Switching Control

Energies ◽  
2019 ◽  
Vol 12 (4) ◽  
pp. 576
Author(s):  
Hsin-Chuan Chen ◽  
Ping-Huan Kuo ◽  
Chiou-Jye Huang
Keyword(s):  
Power System ◽  
Low Voltage ◽  
Power Source ◽  
Power Supplies ◽  
Low Loss ◽  
Voltage Loss ◽  
Critical Issues ◽  
Switch Design ◽  
Voltage Feedback ◽  
Dual Power

In many industries and medical power system applications, dual power source design is often used to ensure that the equipment runs continuously, even when the main power supply is shut down. However, the voltage feedback between two independent power supplies and low loss output are critical issues for the system energy dissipation. Without using a dedicated chip, a new mutual blocking control technology is proposed in this paper to effectively solve the problem of voltage feedback existing in the conventional dual power system. In addition, without adding much hardware cost, the proposed dual power switch design can completely avoid voltage feedback and achieve a low voltage loss of about 30 mV when the load current is less than 0.5 A.

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