scholarly journals FREQUENCY CONTROL IN ELECTRICAL SYSTEM MATHEMATICAL MODELING AND OPERATION CONTROL PROBLEMS

2014 ◽  
Vol 0 (1) ◽  
pp. 62-64
Author(s):  
Yu. M. Vepryk ◽  
O. A. Ganus
Keyword(s):  
Mathematical Modeling ◽  
Frequency Control ◽  
Control Problems ◽  
Electrical System ◽  
Operation Control

scholarly journals Design of Fractional Order PID (FOPID)for Load Frequency Control Via IMC & Grey Wolf Algorithm (GWO), for a Non-Reheated Power System by Comparing with the Big Bang Big Crunch (BBBC) Optimization

2020 ◽  
Vol 9 (1) ◽  
pp. 1253-1260
Keyword(s):  
Fractional Order ◽  
Frequency Control ◽  
Big Bang ◽  
Load Frequency Control ◽  
Frequency Variation ◽  
Grey Wolf Optimizer ◽  
Grey Wolf ◽  
Electrical System ◽  
Load Frequency ◽  
Fractional Order Pid

In this paper work deals about the application of Grey Wolf Optimizer (GWO) for optimization of fractional order PID (FOPID) controlling device to the frequency disturbance, of system load in the one (or) single area non re-heated electrical system and also comparison to the non re-heated BBBC optimization outputs. In this BBBC optimization we have the two bounding cases (low & upper), they are before and after the perturbation cases. And also we observed that the BBBC output responses. After finding the BBBC outputs we observed that the settling time value of load frequency of BBBC is more when compared with the GWO. This problem is resolved by designing of FOPID via GWO algorithm. The Grey Wolf Optimization is well known meta-heuristic algorithm and has been previously used for optimization of various conventional PID and FOPID controllers. In this paper the GWO is used for optimization of FOPID controller to the load frequency variation in the electrical system for non reheated turbine electrical system .the execution outputs of the proposed controlled method also validated to the other existing techniques

scholarly journals Application of internal point methods in cybersecurity problems of intelligent energy systems

2021 ◽  
Vol 46 (2) ◽  
Author(s):  
V. V. Samandrula ◽  
◽  
M. M. Lutsenko
Keyword(s):  
Mathematical Modeling ◽  
Measurement Data ◽  
Energy Systems ◽  
Energy System ◽  
Monitoring Systems ◽  
Control Problems ◽  
Internal Point ◽  
Dos Attacks ◽  
Cyber Defense ◽  
Internal States

The paper considers approaches to the creation of intelligent energy systems based on WAMS monitoring systems, using information technology in metrology, in the means of receiving, processing and transmitting information and determining parameters in control tasks. The paper analyzes the existing cyberattacks on the SCADA and WAMS system and considers possible ways to solve control problems in terms of information security violations of intelligent energy systems. DoS-attacks are considered in more detail, which lead to the failure of devices that measure currents, voltages and capacities, as well as to the disruption of information processing equipment. The paper proposes an algorithm for estimating the state of cyber defense of the intelligent energy system based on mathematical modeling of the internal states of the system, which allows to obtain the required accuracy of calculations in terms of incomplete information, which is the inability to access measurement data.

Study on Operation Control Strategy of Single Piston Hydraulic Free-Piston Diesel Engine

2011 ◽  
Vol 128-129 ◽  
pp. 1044-1049
Author(s):  
Feng Guo ◽  
Ying Huang ◽  
Chang Lu Zhao ◽  
Jia Liu ◽  
Zhen Yu Zhang
Keyword(s):  
Control Method ◽  
Frequency Control ◽  
Control Valve ◽  
Fixed Frequency ◽  
Compression Pressure ◽  
Free Piston ◽  
Control Valves ◽  
Position Feedback ◽  
Operation Control ◽  
Piston Position

The operation control strategies of free-piston engine are investigated in this paper. To start the engine, it needs to adjust the compression pressure and the reset valves should cooperate with the frequency control valve to avoid squirm of the piston for hydraulic leakages. The reset valves should be closed before frequency control valve is opened. A piston position feedback modulation control method which can make sure the piston accelerated continuously is presented. It has fixed frequency control valves open signal moment but no fixed frequency control valves closed signal moment, and the closed signal was activated by piston position feedback.

scholarly journals Digitalization as a tool for solving control problems

2021 ◽  
Vol 330 ◽  
pp. 03004
Author(s):  
Leonid Myshlyaev ◽  
Konstantin Venger ◽  
Vitaliy Grachev ◽  
Konstantin Ivushkin
Keyword(s):  
Mathematical Modeling ◽  
Similarity Theory ◽  
Control Problems ◽  
Digital Models ◽  
Digital Twins ◽  
Model Approach

The article is devoted to the consideration of “digitalization” concept as a tool for solving control problems. The problems of digital twins formation are discussed and two directions for digital models creation are presented. The necessity of using a natural-model approach, methods of natural-mathematical modeling, similarity theory for building digital models is noted.

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