Protection software suite is aimed to support Protection Department specialists from Transmission-Distribution and Generation energy companies. It includes a comprehensive set of modules covering various aspects of Protection Departments activities and providing a closed loop of protection modeling, analysis and maintenance functions:
Protection software suite

  • Transient analysis and Short Circuit calculations
  • Protection settings calculation
  • Protection modeling and evaluation
  • Automated collection of digital fault records and signal processing
  • Automated Fault Analysis and Protection performance estimation
  • Protection configuration life-cycle management

Transient analysis and Short Circuit calculations

Modeling of single and multiple faults, short circuits, open phase operation, earth faults in power systems with grounded, isolated and compensated neutral. Initial steady-state and dynamic disturbance parameters (currents, voltages, impedance etc.) calculation for:
− meshed and radial balanced and unbalanced 1- and 3-phase AC and DC networks
− systems with shunt and fault limiting reactors, capacitors, FACTS devices and distributed energy resources and microgrids.
Graphic representation of analysis results with diverse reporting and documentation functions.

Protection settings calculation

Automatic generation of a full set of network sub-states essential for subsequent protection settings calculation. Network sub-states are chosen according to the Protection Guides reference conditions for settings definition (open-phase states, load conditions, cascade tripping, parallel lines, outage schemes for N-1 and N-2, sub-states with various generation sets etc.).

Multiple iterative short circuit current calculations for the selected network sub-states to define the maximum and minimum faults conditions for the subsequent protection stage setting calculation.

Automatic determination of protected zones ends for the protection stages and check of protection coordination conditions.

Automatic check of protection selectivity and sensitivity. Interactive reporting of calculation results and setting of acceptable protection range for each stage.

Visualization of protection settings linked to the corresponding protection device on the network one-line diagram. Interactive diagrams (time-current, RX) presentation for protection setting analysis with possibility of graphic editing. Automatic build of protection selectivity map for the currently reviewed line segments and paths.

Protection modeling and analysis

Modeling of generic protection ANSI functions (overcurrent, distance, differential etc.) behavior.
Detailed modeling of vendor specific protection terminals including simulation of pickup modules (current, voltage, impedance, frequency, combined), polarization and directional-power modules, functional measurement modules and logical blocks.

Determination of basic signals of a modeled protection (pickup, tripping, return, interlocking, remote acceleration) issued in the given fault conditions.

    Automated reporting for

    • Measured values
    • Pickup event
    • Tripping time
    • Sensitivity factor
    • Settings of all protection devices and stages for the given number of short circuit locations, types and conditions.

    Step-by-step protection actions modeling and tracing. Each stage of tripping is considered as a step with iterative calculation of network parameters (currents, voltages etc.) and analysis of corresponding changes in subsequent protection tripping. Network topology changes are visualized after each tripping step.

    Automated collection of digital fault records and signal processing

    Flexible automatic retrieval of disturbance wave records from substations. Automatic notifications on new disturbances come with user options for «automatic» or «on request» digital fault records collection in the central repository in the control center.

    Buffering the data of substation client while communication interruptions with high level of automatic retrieval of digital fault data when communication link reestablishes. Centralized repository for time-synchronized fault data with secure role-based WEB access. Graphic representation of digital fault records, protection events (pickup, tripping, circuit breaker opennings, etc.), phasor diagrams and harmonics.

    Automated fault analysis and Protection perfomance estimation

    Detailed analysis and fault location estimation from collected digital fault records.
    Calculation of an ideal modeled protection behavior for given fault conditions (network topology, fault location and type etc.).
    Support of comparison of a real protection pickups and tripping time to a modeled one for investigation of potential deviations and hidden failures.

    Protection configuration life-cycle management

    Storing and recording all settings associated with protection devices, including multiple settings groups, range checks, descriptions, and units of measurement. All changes regarding settings, devices, and locations are stored in an audit trail. Specified information about protection devices and their setting is stored, managed from single repository.
    Protection configuration files in vendor specific formats (XML, XRIO, DAT, TXT, etc.) can be converted to a standardized format and imported into DB. Protection settings files can be viewed and managed independently of their manufacturer software. Converters provide the ability to import and export settings files directly for further processing. The ever-growing selection of converters contains 30+ import and 15+ export converters.
    A built-in document management system supports easy access to device manuals, test reports, native settings files or additional documentation such as substation diagrams
    Support of input, configuration and printing of protection settings sheets.
    Configuration of protection life cycle management with corresponding role assignments and regular tasks (periodicity of testing, technical support, version updates etc.)
    Protection sensitivity and selectivity analysis for any planned or changed network conditions.