Probabilistic model of functioning of an automated control system for electrical equipment of industrial enterprises in Vietnam in the event of an accident

2021 ◽  
Vol 93 ◽  
pp. 199-207
Author(s):  
N. G. Topolsky ◽  
◽  
E. A. Meshalkin ◽  
E. N. Mineev ◽  
Nguyen Le Duy ◽  
...  
Keyword(s):  
Control System ◽  
Fire Safety ◽  
Electrical Equipment ◽  
Residual Current ◽  
Automated Control ◽  
Industrial Facilities ◽  
Industrial Enterprises ◽  
Risk Of Injury ◽  
Automated Control System ◽  
Degree Of Risk

Introduction. Ensuring fire safety of industrial facilities depends on how correctly the automated systems for detecting and extinguishing a fire are selected, how quickly and efficiently the necessary preventive measures are taken to minimize the likelihood of a fire and damage from it. Assessment of the degree of risk of injury to people and damage caused by accidents is associated with the task of predicting the indicators of reliability and residual life of a functioning system. The most important issue is the establishment of the permissible periods for the further operation of residual current devices at a specific value of the risk of an accident. One of the features of industrial facilities is the presence of a large number of electrical equipment that creates the risk of major accidents accompanied by fires and explosions. Timely detection of the pre-fire state of electrical equipment is ensured through the use and development of an automated control system for electrical equipment. Goals and objectives. Assessment of the degree of risk of injury to people and damage to them in case of accidents when predicting reliability indicators in an automated control system for electrical equipment. Methods. To obtain the results, general scientific and special methods of scientific knowledge were used: analysis, synthesis, generalization, which were based on the provisions of the theory of probability, the theory of reliability. Research results. An assessment of the occurrence of an emergency is carried out based on elementary statistics and discrete Poisson distribution. Conclusions. The use of an automated control system for electrical equipment upon detection of leakage currents allows increasing the level of fire safety of industrial enterprises, as well as determining the life cycle of residual current devices during its operation. Keywords: accident, analysis, fire, explosion, risk, statistics, reliability, electrical equipment

The use of differential leakage current transformers in an automated fire prevention system in the power grid of industrial facilities

2021 ◽  
Vol 94 ◽  
pp. 20-33
Author(s):  
N. G. Topolsky ◽  
◽  
E. N. Mineev ◽  
G. N. Malashenkov ◽  
M. Sh. Mintcaev ◽  
...  
Keyword(s):  
Control System ◽  
Leakage Current ◽  
Electrical Equipment ◽  
Current Transformer ◽  
Electrical Networks ◽  
Leakage Currents ◽  
Automated Control ◽  
Industrial Facilities ◽  
Automated Control System ◽  
Electrical Cables

Introduction. The occurrence of severe consequences of accidents in the electrical networks of industrial facilities depends on how correctly the automated systems for protection, detection and extinguishing of fire are selected. One of the reasons for the occurrence of a fire hazardous situation in electrical networks is the violation of the insulation and sheath of the electrical cable due to its aging or mechanical damage. Timely detection of the pre-fire state of electrical equipment is ensured by using an automated control system for electrical equipment using a differential leakage current transformer (DLCT). The automated control system for electrical equipment using a differential leakage current transformer is designed for early detection of the location of current leakage in the protected power and (or) lighting group (the electric motor and the power cable supplying it and other parts of the electrical equipment) and the issuance of information to the post with permanent duty personnel. Targets and goals. Improving fire safety of industrial facilities by using an automated control system for electrical equipment using a differential leakage current transformer. Methods. To obtain the results, general scientific and special methods of scientific knowledge were used: analysis, synthesis, generalization, which were based on the provisions of the theory of probability and the theory of reliability. Research results. It is proposed to use DLCT for the protection of high-current electrical receivers in various sections of networks, taking into account selectivity as part of an automated fire prevention system. Conclusions. The use of an automated control system for electrical equipment upon detection of leakage currents makes it possible to: - timely detection of the place of occurrence of leakage currents, detection of the pre-fire condition of electrical cables by leakage currents; - transmission of information about the state of electrical cables to a higher level of the automated control system for electrical equipment; - disconnection of the cable line from power sources and power consumers on command from a programmable controller; - preventing the spread of fire along the cable route and along adjacent structural elements, enclosing structures and technological units; - activation of executive devices by the operator in an automated mode. Key words: accident, analysis, fire, explosion, risk, statistics, reliability, electrical equipment.

Automated control system of tactical UAV mission and payload

2014 ◽  
Vol 0 (10) ◽  
pp. 73-77
Author(s):  
P. P. Tkachuk ◽  
Y. P. Salnyk ◽  
Y. M. Pashchuk ◽  
I. V. Matala
Keyword(s):  
Control System ◽  
Automated Control ◽  
Automated Control System

Requirements for explosion and fire safety of industrial enterprises

2020 ◽  
pp. 18-23
Author(s):  
A. S. Moshnenko ◽  
E. S. Krivoshey ◽  
I. N. Smirnova
Keyword(s):  
Fire Safety ◽  
Electrical Equipment ◽  
High Quality ◽  
Industrial Enterprises ◽  
Basic Concepts ◽  
Explosion And Fire Safety

The modern requirements for explosion and fire safety of industrial enterprises are considered. Equipping the production with high-quality explosion-proof electrical equipment ensures the safety of resources and people's lives. Basic concepts are given, principles and classifications are described, international and Russian standards are indicated, which should be followed by manufacturers of such devices.

Automated control system of a molecular-beam epitaxy setup

2010 ◽  
Vol 37 (5) ◽  
pp. 131-135
Author(s):  
I. P. Kazakov ◽  
V. I. Tsekhosh ◽  
M. E. Igonin ◽  
L. A. Fofanova ◽  
S. N. Shemyakin
Keyword(s):  
Control System ◽  
Molecular Beam Epitaxy ◽  
Molecular Beam ◽  
Automated Control ◽  
Automated Control System
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