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June 23, at pm Reply. June 28, at am Reply. June 30, at am Reply. Another example network for thermal destruction analysis introduces this new module. The different modes, which are tailored to network planning and the protection department, are explained and it is shown how the thermal short-circuit current capability of the equipment can be tested fully automatically.
The representation of the enormous complexity of future energy systems gains growing importance. The new model examples serve as implementation proposals as starting point for user-defined modeling of such complex systems in the frequency range of power system dynamics for stability analyses. In October Microsoft officially released the new operating system Windows 11 as successor of Windows It supports the new operating system Windows 11 completely, and you are well prepared for the future requirements of your IT landscape.
Bidirectional power flows, caused by renewable energy resources and different operation status, can require changing protection settings. Therefore, a fast and flexible adjustment of the parameter set is needed.
The network data file. This is in order to manage several parameter sets of the same protection device can be used in variants and scenarios or transfer settings from one device to another.
This function can also be used to create type parameter sets for recurring protection settings. The increase in short circuit contribution of converter-based generation requires a simulation model that reflects a voltage dependent reactive current injection for short circuit calculation and protection analysis. The dynamic voltage support function allows engineers to simulate the short circuit contribution of the converter by a reactive current injection dependent on the voltage drop at the connection point.
As such, the dynamic voltage support characteristic can be adjusted and the positive and the negative sequence system are supported. This system is now applied on all simulation methods and replaces the previous approach. All relevant input data, results or external source data can be represented graphically by manual creation from Signal Explorer or, for specific calculation methods in protection, harmonics, motor start etc. This saves users time and effort and enable a more efficient way of handling the network model.
By utilizing the built-in evaluation functions and a higher accessibility of data in open databases, users gain additional value in the analysis part of their network planning process.
This facilitates the cooperation between operation, metering and planning teams by integrating time series data like measurements, forecasts or schedules and switching events into the initial condition for all power flow based analyses or into a complete time series simulation. This leverages the investment in metering, SCADA and forecast systems for grid analysis and planning use cases. Demonstration, prototyping, testing, research and development require benchmark network models.
The visualization of input data and results in per unit [pu] is now possible in network graphic, data masks and tabular view as network model specific option. Strengthening Modeling Capabilities in Graphical Model Editor GMB Modeling autonomous and coordinated operation of power systems in steady-state and dynamic simulation is crucial for future network planning and operation.
New functions, blocks and a completely revised functional documentation support users in creating user-defined models in GMB. If parallel coupled lines are disconnected by events or for maintenance purposes and are optionally earthed at the terminals, it may have an impact on operation and protection of the active line.
Furthermore, induced currents and voltages occur in the switched-off lines, which have to be observed. The operating currents occurring in the network must not lead to the pickup of the protection systems, the protection devices must therefore be able to differentiate reliably between load and short-circuit current.
By checking the pickup security in the protection analysis, it can be ensured that operating currents that occur, taking into account a security factor, certainly do not lead to the pickup of the protection devices. The Excel import dialog has been improved and adapted to the users workflow. Extension of the Multi-User Master Database PM When working with multiple users or teams on complex network models, certain requirements must be fulfilled in order to manage a common network model to track the changes of individual users and keep the network model consistent.
In the current version, the Multi-User Master Database is extended so that the administration can be opened directly without loading the network data and graphics, client users are automatically informed about updates in the Master Database when they open their network, and users can change their password without the intervention of the administrator.
In addition, the administrator is supported in managing the master network in such a way that changes in the publications of the users are highlighted in the preview of the network graphic.
These enhancements lead to a significantly increased efficiency in sharing a common network model. Revised Grid Connection Assessment Module for DERs EEG for DACH region guidelines The calculation and evaluation steps of the module to assess the grid connection guidelines are revised to the updated effective guidelines with respect to short-circuit power, equipment utilization, voltage changes, flicker and harmonics.
Aligned signal flow for element controllers, capability curves and limits PF based modules To allow the detailed modelling of common functionalities of decentral energy resources DER the existing sub-functions for elements in power flow based calculations are aligned and extended.
Extended programming interface to support automated network planning use cases To support automated and individual approaches for complex network planning tasks the flexible creation of elements and graphics, topology and switching state changes are required. The programming interface e. New functionality for detecting earth faults in isolated and compensated networks. Check whether your earth-fault protection devices reliably detect the earth faults occurring in your network.
Here it is also possible to consider the influence of fault resistances. Depending on your protection concept, the protection function can be set to signal or trip. Extension of the essential checks in protection, for time selectivity selectivity , reliability of pickup reliability and maximum fault clearing time speed , in the protection analysis. Further, these checks are now available in the main dialog of the protection analysis. This function enables to determine the earth fault compensation data based on a single-line to earth-fault short circuit calculation in networks with isolated neutral or earth fault compensation.
The values of the determined compensation impedance can be directly copied to a transformer neutral to reduce the single line to earth current nearly to zero. The reactance correspond to earth fault compensation coil and the negative resistance correspond to residual ohmic current compensation connected to the neutral in parallel. Manage your model parameters in a more comfortable way. Simply paste long parameter lists from other sources, overwrite debug values or take them over as default and extend your parameter equations by conditional queries.
You can use a better signal routing in your models and a more intuitive block alignment functionality. Edit all common properties of selected blocks and find some new function blocks e.
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