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Busbar

Load flow analysis busbar connector

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  • Simscape / Electrical / Connectors & References

  • Busbar block

Description

The Busbar block is a connector for load-flow analysis. Use this block with three-phase Simscape™ Electrical™ networks that are compatible with frequency-time simulation mode. After completing simulation, the block adds an annotation showing the voltage, phase, active power, and reactive power at each of its three-phase electrical conserving ports at the time the simulation started. For the annotation to be added, Simscape logging must be enabled.

The block will simulate in time-based simulation mode, however it will not add the annotation with initial load flow results unless the network is compatible with frequency-time simulation mode and, on the Solver Configuration block, you check Start simulation from steady state . However, when using time-based simulation mode, the block calculates approximate values for voltage, phase, active and reactive powers. You can view these values from Simscape logging or by exposing the optional measurement ports on the block. The level of approximation depends on how balanced the system is and on the level of harmonics present.

Ports

Output

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Physical signal port associated with the voltage measurement. The value is reported in per-unit, i.e. phase-to-phase root mean square voltage divided by the Rated busbar voltage (phase-to-phase RMS).

Dependencies

This port is visible only when, in the Parameters settings, the Measurements ports parameter is set to Yes.

Physical signal port associated with the voltage phase measurement.

Dependencies

This port is visible only when, in the Parameters settings, the Measurements ports parameter is set to Yes.

Physical signal port associated with the active (real) power measurement.

Dependencies

This port is visible only when, in the Parameters settings, the Number of connections parameter is set to 2, 3, or 4 and the Measurements ports parameter is set to Yes.

Physical signal port associated with the reactive (imaginary) power measurement.

Dependencies

This port is visible only when, in the Parameters settings, the Number of connections parameter is set to 2, 3, or 4 and the Measurements ports parameter is set to Yes.

Conserving

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Composite three-phase electrical conserving port associated with the first three-phase connection.

Composite three-phase electrical conserving port associated with the second three-phase connection.

Dependencies

This port is visible only when, in the Parameters settings, the Number of connections parameter is set to 2, 3, or 4.

Composite three-phase electrical conserving port associated with the third three-phase connection..

Dependencies

This port is visible only when, in the Parameters settings, the Number of connections parameter is set to 3 or 4.

Composite three-phase electrical conserving port associated with the fourth three-phase connection.

Dependencies

This port is visible only when, in the Parameters settings, the Number of connections parameter is set to 4.

Parameters

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Number of port connections that are exposed on the block.

The number of exposed ports on the block correlates to this parameter.

Rated phase-to-phase root mean square voltage of the busbar.

Frequency of the connected network.

Visibility for the voltage, phase, active power, and reactive power physical signal output measurement ports.

Dependencies

Ports Vt and ph are visible only when this parameter is set to Yes.

Ports P and Q are visible only when this parameter is set to Yes and, in the Parameters settings, the Number of connections parameter is set to 2, 3, or 4.

Model Examples

Extended Capabilities

C/C++ Code Generation
Generate C and C++ code using Simulink® Coder™.

Introduced in R2019b