Reliability of protection and control equipment in the context of compensation for power supply interruptions

2001 ◽  
Author(s):  
G. Kjolle
Keyword(s):  
Power Supply ◽  
Control Equipment ◽  
Supply Interruptions ◽  
Protection And Control ◽  
And Control

scholarly journals An Adaptive Differential Protection and Fast Auto-Closing System for 10 kV Distribution Networks Based on 4G LTE Wireless Communication

2019 ◽  
Vol 12 (1) ◽  
pp. 2 ◽  
Author(s):  
Wen An ◽  
Jun Jie Ma ◽  
Hong Yang Zhou ◽  
Hong Shan Chen ◽  
Xu Jun ◽  
...  
Keyword(s):  
Control System ◽  
Wireless Communication ◽  
Power System ◽  
Power Supply ◽  
Distribution Networks ◽  
Fault Isolation ◽  
Differential Protection ◽  
Current Differential Protection ◽  
Protection And Control ◽  
And Control

With the development of wireless communication technology and computer technology, more and more smart technologies have been applied in electricity distribution networks. This paper presents an adaptive current differential protection and fast auto-closing system for application in 10 kV distribution networks in China Southern Power Grid. The current differential protection can adaptively change its settings according to the topology change of the primary distribution networks, thus the system effectively reduces the operation and maintenance cost of the power distribution network. In order to restore the power supply for the healthy part of the 10 kV networks quickly after a power system fault is cleared, the protection and control system provides wide area control function for automatic fault isolation and automatic switching. The traditional overcurrent protection and control system have no fault location function, it may take several minutes or even hours to manually locate a fault and then restore the power supply. Compared with the protection and control system of the traditional 10 kV distribution networks, the system developed can locate and isolate faults within 900 ms (assuming that the operating time of the load switch is 700 ms), and can quickly restore power supply in less than one second after a power system fault is cleared.

Design of a Microcontroller-Based Passive Standby Uninterruptible Power Supply

2001 ◽  
Vol 38 (4) ◽  
pp. 330-337
Author(s):  
M. I. Jahmeerbacus ◽  
K. M. S. Soyjaudah
Keyword(s):  
Power Supply ◽  
Systems Approach ◽  
Top Down ◽  
Uninterruptible Power Supply ◽  
Control Functions ◽  
Uninterruptible Power ◽  
Protection And Control ◽  
And Control

This paper describes the design of a microcontroller-based passive standby Uninterruptible Power Supply (UPS), where the student applies a top-down systems approach to produce a working system. Such a project involves hardware-software co-design for realizing the relatively large number of detection, protection and control functions within the UPS.

Development and Field Experience of Digital Protection and Control Equipment in Power Systems

1982 ◽  
Vol PER-2 (11) ◽  
pp. 23-24
Author(s):  
Tokio Sugiyama ◽  
Sigeaki Kameoka ◽  
Kouji Maeda ◽  
Akira Kaneda ◽  
Tadahiro Goda
Keyword(s):  
Power Systems ◽  
Field Experience ◽  
Control Equipment ◽  
Digital Protection ◽  
Protection And Control ◽  
And Control

scholarly journals Protection and Control Standards with Auto Diagnosis for the Motor in Low-Voltage Switchgear According to Industry 4.0

Electronics ◽  
2021 ◽  
Vol 10 (23) ◽  
pp. 2993
Author(s):  
Łukasz Sołtysek ◽  
Jerzy Szczepanik ◽  
Radosław Dudzik ◽  
Maciej Sułowicz ◽  
Andreas Schwung
Keyword(s):  
Power Supply ◽  
Industry 4.0 ◽  
Low Voltage ◽  
Normal Operation ◽  
Communication Structure ◽  
Flexible Devices ◽  
Protection Devices ◽  
Protection And Control ◽  
And Control ◽  
Ethernet Connection

The article is a review of the latest available technologies on the market which are part of “Industry 4.0”, in the field of protection, control, and power supply of equipment. The authors focus on the development of the protection devices (PLC controllers), which can be used not only for protection purposes but also for the diagnosis and monitoring of the entire system. The key element is the communication structure involving protection, main PLC controller, and DCS, which has an impact on the reliability of the whole system. The authors compare different solutions that allow increasing the reliability of the system (ethernet connection), compared to the classic system (wire connection). Universal protection devices are more flexible devices compared to classic control equipment, but also allow us to make modifications to the structure after commissioning, during normal operation of the system without stopping the technological process.

scholarly journals DC-Link Protection and Control in Modular Uninterruptible Power Supply

2018 ◽  
Vol 65 (5) ◽  
pp. 3942-3953 ◽  
Author(s):  
Jinghang Lu ◽  
Mehdi Savaghebi ◽  
Yajuan Guan ◽  
Saeed Golestan ◽  
Juan C. Vasquez ◽  
...  
Keyword(s):  
Power Supply ◽  
Uninterruptible Power Supply ◽  
Uninterruptible Power ◽  
Protection And Control ◽  
And Control ◽  
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