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1. #Cyme Power Engineering Software Software Described In#
2. #Cyme Power Engineering Software How To Create A#

Cyme Power Engineering Software Software Described In

CYME International T&D Inc. While every precaution has been taken in the preparation of this manual, CYME assumes no responsibility for errors or omissions, or for damages resulting from the use of the information contained herein. The information in this manual is subject to modification without notice. CYME International T&D reserves the right to revise and improve its products as it sees fit. CYME makes no warranty, either expressed or implied, including but not limited to any implied warranties of merchantability or fitness for a particular purpose, regarding these materials and makes such materials available solely on an "as-is" basis. Possession or use of the CYME software described in this publication is authorized only pursuant to a valid written license agreement from CYME.

It is the basic analysis tool for the planning, design and operation of any electrical power systems. 51CYME 8.2 - Power Flow Analysis - Users Guide1 – Getting Started Introduction The objective of a load flow is to analyze the steady-state performance of the power system under various operating conditions. 1 2 – Load flow analysis dialog box. Bruno QC J3V 3P8 Canada Tel.: (450) 461-3655 Fax: (450) 461-0966 Canada & United States: Tel.:1-80 Internet : E-mail: Other Trademarks: The names of all products and services other than CYME’s mentioned in this document are the trademarks or trade names of the respective owners.Contents 1 – Getting Started.

The same equipment ID’s would be used in both databases, but the impedances would be different for the same equipment ID. Unbalanced networks: Newton-Raphson (Requires the CYME Distribution Analysis package or the CYME Secondary Network Grid Analysis Module)The Power Flow module operates in conjunction with other add-on modules, namely:The Harmonic Analysis: to communicate the fundamental frequency voltages and currents for harmonic distortion calculations.The Stability Analysis: to communicate the initial conditions to the transient stability Analysis Program.The Dynamic Motor Start Analysis: to account for system wide voltage drops during motor start.You can maintain two equipment databases (especially for lines and cables), like one for winter and one for summer for example. The ones available in the application depend on your license key. The basic load flow question for a known power system configuration is as follows: Given: The voltage magnitude and phase angle at each busThe power flow through each line and transformerThe CYME Power Flow capabilities encompass solution algorithms for balanced and unbalanced networks.

Cyme Power Engineering Software How To Create A

Expressed in Ohm-m.To determine the method used to calculate line impedances and admittances for overhead lines (balanced and unbalanced), by-phase lines, double-circuits and unshielded cables. You may change it anytime.Influences the zero-sequence parameters. (CYME calculates with ohm values, not per-unit.) With the DC Load Flow and/or the DC Short-Circuit Analysis optional modules, you will be able to set the DC Base Power value as well.(e.g., 120V, 12,470V) is the voltage to which the base voltage results will refer to. See Database > Create for details on how to create a database configuration.Defines the base for the per-unit impedance of the Substation Equivalent and for the per-unit Thevenin impedance you can request in the Shortcircuit report.

For more information, please see the CYME Reference manual.Units parameters This includes the system of units (Metric or Imperial), electrical and conductor impedance units and load type.Labels to be displayed for each of phases A, B and C.To enter the label text you want to use to describe the Equipment Rating values in the dialog boxes.Enter the label texts to describe the equipment Capacity Flag levels in the various dialog boxes where they are used.To enter the text of the field labels that indicate the grouping levels of the networks, and to determine the order into which they will be sorted.Simulation parameters Voltage Mismatch AllowedTo enter the minimum and maximum allowable percentage difference between the system voltage and the equipment rated voltage before transmitting a warning.Access the simulation Using the Simulation toolbar, select Load Flow from the list of available analyses and then click on the Run Simulation iconIt is also possible to run the Load Flow simulation from the menu Analysis > Load Flow. The parameters to look for are at the Units tab, the Text tab and the Simulation tab.A summary of these parameters is listed below for quick reference. With this option selected, the program applies correction factors to the Nominal PI model in order to calculate the impedances more precisely.With the Distributed Transposed option selected, the program applies that model to balanced lines or cables of equal length or longer than the length the user indicates here.The energy cost per kWh is used for the calculation of the cost of losses.Study preferences The study preferences are subdivided into categories such as units, user defined simulation text and parameters. The Distributed Transposed option applies only to balanced lines and cables with user-defined impedances that are of equal length or longer than the threshold specified in the field right below. By default, the lines are modeled based on the Nominal PI model.

These Load Flow analysis templates are also available for selection when running other analyses that use the load flow. The use of these templates eases the study of scenarios since the user only has to choose a configuration instead of checking and un-checking options. The Load Flow Analysis dialog box comprises six tabs that will allow you to set the: Load Flow analysis Parameters including any Load or Generation Scaling Factors.The Networks that the Load Flow is to be performed on.The Controls to include or exclude particular equipment.The Voltage Limits for bus and/or customer load voltage violations.The Output options for reports and One-line Diagram.2 – Load flow analysis dialog box Parameters tabConfiguration It is possible to create multiple Load Flow analysis templates, each with different simulation parameters.