Complex modeling of power fluctuations stabilization digital control system for parallel operation of gas-diesel generators

Abstract

Development of effective monitoring systems of power exchange fluctuations and proportional alignment of loading on gas-diesel-generator units requires carrying out detailed researches both their own fluctuations, and exchange fluctuations in case of parallel work of several units. Carrying out such researches on real objects is limited to their considerable cost and can be given only at the final stage. Therefore it is very important for developers to have adequate models of the studied objects.The researches of output voltage frequency fluctuations for real objects executed by authors showed that in general they have casual character, and these fluctuations in all range of loadings represent non-stationary casual process with the changing population mean and dispersion. Authors developed mathematical model of the regulator stabilizing exchange fluctuations of power in the studied system. But there was a question of its hardware realization because it requires solving the problem of identification of the structure of this system and on-line monitoring of changes in its parameters and signals.The authors have proposed a candidate solution for such a problem through the example of identification and synthesis of the system of measuring system performance indicators required to appraise the electric power quality in this system and, as consequence, performance quality.Index Terms-Drilling platforms, electric power quality, gasdiesel-generator units, identification and tracking.

Cluster-type models in the logistics industry

“…To calculate the cost of the necessary hardware, it should be presumed the number of users, who will have access to the EDCS, as well as the total number of workstations on the TLC. Such averaged parameters were selected [17][18][19][20]: i). Number of employees in small companies -80, while 60 of them have a workstation with an Internet access, 40 of them have the access to EDCS; ii).…”

The Simulation Model as a Tool for Diagnostics of Operation Equipment

“…A task of simulation model is check of the modelled process. In the conveyor system start of new operation can't be allowed if the previous operation isn't complete [7][8][9]. This property is important at diagnosing of the system work.…”

“…The position р 1 7 has chip which shows presence of pressure of working liquid. In the absence of chip in position р 1 7 (pressure of working liquid) the model won't work. Working liquid under pressure (р 1 7 ) is supplied to electromagnetic valves (positions р 2 7 , р 3 7 , р 4 7 , р 5 7 ).…”

Algorithmic approach of destabilizing factors of improving the technical systems efficiency

“…Methods of dynamic programming, branches and boundaries are also quite complex and require the use of digital computers. The complexity of developing a criterion for the optimal load distribution between aggregates and the choice of the optimal composition of operating aggregates consists in finding the extremum of the function with nonlinear dependencies, constraints of the form equalities and inequalities, and the discrete part of the problem of choosing the optimal composition of operating aggregates, which excludes the possibility of using the classical apparatus for finding the extremum [3][4][5][6][7].…”

“…Derive the formula for calculating the partial derivative position ≈ = [4][5][6][7][8]. We calculate the partial derivative for four points of the universal characteristic [5][6][7][8] …”