CYMDIST

CYMDIST

Distribution System Analysis


Overview

CYMDIST can perform several types of analysis on balanced or unbalanced three-phase, two-phase and single-phase systems that are operated in radial, looped or meshed configurations. The base module includes per-phase voltage drop and power flow analysis, fault calculations (fault flows and fault voltages), protective device coordination (by interfacing with CYMTCC), optimal capacitor placement and sizing, load balancing and load allocation/estimation. CYMDIST is also equipped with add-on modules to perform more specialized analyses such as predictive and historical reliability analysis, contingency analysis, harmonic analysis, switching (tie-points) optimization, and more, as described below.

CYMDIST software

CYMDIST is an extremely powerful tool to assist you in creating "what-if" studies and performing simulations to evaluate the impact of modifications to your network, actual or future.

With the newly added “Network Forecaster” function you can view/modify/create time-dependent projects in the selected period, that consist of any modifications such as the addition of any load at a given date (year, month or day), change/ replacement of power transformers within the substation, rephasing/reconductoring project, network switching or reconfiguration, etc.

All the data resides in standard SQL tables and XML files so it can be easily populated or queried by third parties applications. CYMDIST can be interfaced with or embedded in other applications such as AM/FM/GIS system, DMS, NMS, OMS or SCADA systems and is available as a Microsoft Component Object Model (COM) for integration with other COM-compliant applications.

Analytical Capabilities

* Balanced and unbalanced Voltage Drop analysis (radial, looped or meshed).
* Protective device coordination verification according to user-defined criteria for device clearance and loading.
* Fault current calculations for RMS, asymmetrical and peak values for all shunt fault configurations.
* Fault flow and fault voltage analysis throughout the network taking into account pre-fault loading conditions.
* Optimal capacitor placement and sizing to minimize losses and / or improve voltage profile.
* Load balancing to minimize losses.
* Load allocation/estimation using customer consumption data (kWh), distribution transformer size (connected kVA), real consumptions (kVA or kW) or the REA method. The algorithm supports multiple metering units as fixed demands and large metered customers as fixed load.
* Motor starting analysis (voltage dip and maximum motor size allowable).
* Flexible load models for uniformly distributed loads and spot loads featuring independent load mix for each section of circuit.
* Load growth studies for multiple years.
* Feeder interconnection for load transfer simulations.
* Phase merging capability.
* Automatic re-conductoring and re-phasing of selected sections.
* Distributed Generation.

CYMDIST software Reporting capabilities:

CYMDIST reporting facilities allow to fully define the analyses results into web reports. CYMDIST includes a variety of report templates for all types of analyses. You can combine any reports, and create new ones, utilize any CYMDIST variable and created your own mathematical expressions using any of those variables, which further extends the reporting possible with CYMDIST.

CYMDIST Additional Modules

The following optional add-on modules significantly enhance the technical capabilities of CYMDIST:

* CYMDIST Network Forecaster: to view, modify and create time-dependent projects (using the CYMDIST Advanced Project Manager) consisting in modifications to the network such as the addition of any load at a given date, change/replacement of power transformers within a substation, a rephasing/reconductoring project, network switching or reconfiguration, etc.

* CYMDIST Advanced Project Manager: extensive tool that supports the collaborative and detailed preparation of a project that consists in modifications to the network with related simulations.

* CYMDIST(RAM) Predictive and Historical Reliability Assessment: provides a framework within which predictive and historical reliability assessment scenarios are run and the impacts of the related investment such as DA (Distribution Automation) can be evaluated and understood.

* CYMDIST(HARMO) Harmonic Analysis: features a number of analyses, including frequency scan, voltage distortion and current distortion calculations on unbalanced systems.

* CYMDIST(SOM) Switching Optimization: assists the distribution engineers in determining the optimal feeder configuration that will minimize losses, improve the voltage profile and balance the load between feeders.

* CYMDIST(CAM) Contingency Analysis: to study the impact of single forced or planned outages on the electrical distribution system and find the optimal switching plan to restore electrical power to priority customers and to recover the maximum possible load in the affected areas.

* CYM-ARC Flash Hazard: to analyze and promote the electrical safety for employees working on or near electrical equipment. It computes the necessary parameters required to assess the risk level and adopt the adequate safety procedures. Distinct dialog boxes are provided for parametrizing the analyses of distribution/transmission systems and of industrial networks.

* CYMDIST(EPM) Energy Profile Manager: features tools for the optimal viewing, editing and importing of load profiles and metering demands from various types of data sources. Includes a Load flow with profiles analysis functionality. The user can generate reports and charts based on monitored devices and summary networks results.

* CYMDIST(SUB/SUBNET) Substation Sub-Network Modeling and Analysis: to model all the major components of the distribution substation and any sub-network such as the detailed modeling of an industrial facility.

* CYMDIST(SNA) Secondary Network Analysis: allows the Power Flow and Short Circuit analyses of heavily meshed secondary network distribution systems for any voltage level.

* CYMDIST(MAP) Geographic Overlay: to display raster or vector map images (geographical land-base such as DWG, DXF, SHP, etc) as layers directly underneath the electrical model. You can select and toggle on/off the different layers.

Complementary Modules

* CYMDIST Gateway: CYMDIST Gateway is the CYME solution for the creation and maintenance of the CYMDIST distribution network data model. The connectivity network extracted from the GIS is accurate, electrically complete, with actual loads and switch status; and this network model can be updated easily.

* CYMTCC: addresses Time Over-Current protection for Industrial, Commercial and Distribution Power systems. Features a direct interface to CYMDIST to verify the coordination of protective devices, the maximum permitted operating time («Reach») and the maximum permitted continuous load current.