The Substations and Sub-networks module is an add-on to the CYME software that provides the user with the capability to model all the major components of the distribution substation and any sub-network such an industrial facility.

The graphic editor of CYME is utilized to build the one-line diagram of the substation. This includes the representation of bus bars, multiple transmission line feeds, power transformers, tie points and protective devices.

The distribution feeder sources are now the transmission lines feeding the substation. The impact of all components of the substation as well as all components of the feeders connected to it are now taken into consideration during the analysis.

The substation allows the user to analyze the effects of a change in the nominal operating condition of one feeder on another.

A typical example would be the voltage profile of one feeder due to a fault on a section of another feeder connected to the same substation.

The module also allows the user to model sub-networks such as a detailed representation of an industrial facility. These sub-networks are considered to be a continuation of existing network feeders.

The module is fully integrated into CYME for voltage drop, short circuit, load allocation and capacitor placement analyses on both radial and looped systems. The analysis results for the equipment, including any color coded abnormal conditions, within the substation and the sub-network can be posted on the network one line diagram and in the reports.

The CYME Substations and Sub-Network Analysis module and the Secondary Network Analysis module greatly enhance the capability of our CYME power system analysis software by including, in addition to the primary feeders, the substation detailed representation and the secondary grids all the way down to the customer’s transformers.