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Języki programowania sterowników PLC

100%

Purczyński A.

tom Nr 46

33-41

W artykule przedstawiono podstawowe cechy języków programowania sterowników PLC, objętych głównie normą IEC 1131-3. W szczególności uwzględniono: sekwencyjny język graficzny (SFC), język diagramów przepływowych (FC); język schematów bloków funkcyjnych (FBD), język schematów drabinkowych (LD), język strukturalny (ST) i język listy instrukcji (IL).

This paper presents the basic characteristics of the programmable languages of the controllers (PLC) subjected mainly to the IEC 1131-3 standard. The following aspects are discussed in more details: sequential function chart language (SFC), flow chart language (FC), function block diagram language (FBD), ladder diagram language (LD), structured text language (ST) and instruction list language (IL).

Calculator for Electricity Supply's Unreliability Estimation (OZZEE)

63%

Purczyński A. , Frąckowiak R.

Computer Applications in Electrical Engineering

2010

tom Vol. 8

270--280

In the paper, the OZZEE software developed by the authors to compute the unreliability indicators of the electrical energy delivery to the customers and to support the reliability analysis of electric power systems is described. Basing on a given reliability structure and on the integrated elements parameters, the program can found the mean annual downtime, mean annual failure rate as well as the power supply unreliability coefficient. In analysis of the complex structures, the computation model based on the mean failure cuts (MFC) method has been applied. The assumptions applied when constructing the algorithm of computations as well as examples of the program applications in analysis of the complex grid systems have been presented.

Calculating distribution of magnetic field induction in vacuum interrupter contacts

63%

Purczyński A. , Janiszewski J.

Poznan University of Technology Academic Journals. Electrical Engineering

2007

tom No 53

37-42

The article presents a method and exemplary calculation results of magnetic field induction generated on contacts of vacuum interrupters. The authors determined three vector components of this field: axial component (z). circumferential component (y), and radial component (x) by means of the Biot and Savart law. The authors' simple programme PoMS was used for the calculations. It enables fast evaluation of the influence of some geometrical parameters in the contact design on generated magnetic field.

Assessment of reliability characteristics for electric power systems

51%

Purczyński A. , Frąckowiak R. , Arciszewski A.

Poznan University of Technology Academic Journals. Electrical Engineering

2008

tom No 58

95-101

In the paper, the software developed to support the reliability analysis for the simple and complex structures is proposed. In the program, the method of minimal failure cuts (MFC) - based computational model has been used. The application is called OZZEE Calculator and can be applied to assess failure rate, Mean Down Time (MDT) and probability of failure. An example of computations with the software is reported.