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Once in the options, enter the file location for the type images.

The protection relay images should be in this folder.

The protection relay information file ProtectionPictures.ini should also be here.

 

Start the calculation with Calculate | Fault simulation.

The fault simulation form appears. This form remains visible 'on top'. Behind it, you can work with the network in the editor. You can also close the screen at any time and call it up again in the same state via the menu.

The fault simulation form contains an invisible copy of the network. Interaction with this network is mainly in the form of text.

 

The fault simulation form consists of nine tabs.

 

Start

A short circuit can be applied at/in any node or cable (proportional to the failure frequencies entered), at a location to be specified or according to a case included in the network. In a case, a protection and/or circuit breaker may fail.

During the short circuit, signals from protection relays' and short-circuit indicators are set and circuit breakers and fuses are switched off.

 

Statuses

The following data can be viewed of nodes that have been reported far:

•The voltage of the node

•The current in a branch

•The current in an element

•The switching position of a load switch

•The switching position of a circuit breaker

 

Alarms

Alarms are immediately received from objects that have been reported off:

•From a node with remote notification: a circuit breaker switched off

•From a circuit breaker with inhibit notification: the circuit breaker which has been switched off

•From a short-circuit indicator with remote indication: the short-circuit indicator that is signalling

 

Fault signals

Fault messages are periodically received from (transformer) loads (consumers).

 

Remote control

Load switches and power switches with remote control can be switched on or off.

 

Moving

You can visit a station. The travel time is calculated relative to the previous station with route planning or according to the great circle distance. The time to reach the first station is 30 minutes.

 

Station action

The following actions are possible in a station:

•Viewing a protection relay

•Viewing a load switch

•Viewing a circuit breaker

•Viewing a fuse

•Viewing a short-circuit indicator

•Measuring the Voltage

•Measuring a cable/trace phase-to-ground

•Measuring a cable/track phase-phase

•Replacing a fuse

•Switching on a load switch

•Switching off a load switch

•Switching on a circuit breaker

•Switching off a circuit breaker

•Securing / blocking a circuit breaker

•Disconnecting / disconnecting a circuit breaker

•Disconnecting the power transformers

•Connecting the power transformers

•Resetting some protection relays

•Resetting a short-circuit relay

 

When viewing a protection relay or short-circuit indicator, a picture of the device is shown, where present, with the lights and display indicating the status.

Active actions are carried out in the network. A short message of the result is displayed for all actions.

During troubleshooting, the fault limits from the options are applied for the load of branches and elements. After troubleshooting, the normal limits apply.

 

Stop

After you have performed all actions to solve the fault (as far as possible), you can end the fault simulation.

The summary of the results includes:

•The time duration

•The number of fault consumption minutes

•Unresolved objects

•Faulty operations

•Overloaded objects

•Location of the short circuit

 

The summary, including details, can be reported to a text file.

'Exit' deletes this session of fault simulation.

 

Logging

A list of all actions performed (so far) with the result.

 

 

TIP

 

Move quickly

Although the network in the graphical editor and the network in the fault simulation are not linked (a copy is made at the start), you can still move quickly in fault simulation via the editor, because selecting a node schematically is more convenient than choosing from a list. To do this, close the fault simulation form, select one node in the editor and call up the fault simulation form again via the menu.