Scaling Stress Test

The Scaling Stress Test helps identify weak spots in the grid by simulating different extreme load and generation scenarios based on the scaling of existing load and generation in the grid.

Three scenarios are pre-specified:

• Full load, full generation: this is the status quo of the grid.
• Full load, no generation: this extreme case simultes the loading of the grid in a pure load scenario, for example at night.
• Full generation, no load: this extreme situation simulates the loading of the grid in a pure generation scenario.

More scenarios can be specified on the Scenario page.

Grid

The Scaling Stress Test is run on a single grid at a time. Choose the grid to be calculated from the Grid dropdown list.

The Scaling Stress Test is started by clicking .

Grid Upgrades, Connection Request and Scenarios

Grid Upgrades and Connection Requests are applied to the grid by default depending on their status. They are part of the grid model for the duration of the simulation. The selected Grid Upgrades and Connection Requests are visualized in the grid.

To change the default selection, just select or deselect the desired add-ons from the list.

Scenarios and Load Situations are never applied by default. They need to be specifically selected.

INFO

Grid upgrades, connection requests and scenarios defined here are applied first and then the Scenario is simulated with these add-ons.

Scenario

All Scenarios from the dropdow list are simulated by default.

Results for a specific Scenario can be analysed by picking that scenario from the dropdown list.

Operational Limits

The operational limits for the coloring of the results can be defined by clicking on at the top of the page.

Results

The Scaling Stress Test results are visualized in the results tables and in the grid viewer. A print friendly output can be created by clicking at the top of the page.

Violations (All Scenarios)

This section displays the violations of the operational limits of buses, lines and transformers over all Scenarios. Violations are marked red, warnings yellow and if there are no violations it is marked green.

For each operational limit category all elements and their corresponding minimum/maximum power flow result over all scenarios are shown. The tables are sorted from worst to lowest violation.

Expanding the results for an element by klicking on shows the results of each scenario. This allows for quick comparison between scenarios.

In the map view, each bus, line and transformer is colored according the worst violation over all scenarios. Clicking on the element ID in the table centers the map view onto that element.

Violations (Scenario "...")

This section displays the violations of the operational limits for the selected Scenario. Violations are marked red, warnings yellow and if there are no violations it is marked green.

In the map view, each bus, line and transformer is colored according the worst violation of the selected scenario.

The Buses tab shows selected characteristics, such as distance to slack bus and the ratio between residual load and short circuit power.

The Lines, Transformers and Fuses tabs show the length, loading and power loss of the lines and transformers.

The quantities can be visualized in a histogram by clicking the icon in the table headers.