线路

R2026a

电缆、耦合线路、传输线

使用电缆和线路传输单相电力和三相电力。

有关决定使用哪个模块来对电缆或线路进行建模的帮助，请参阅Choose Blocks to Model Cables or Lines。

Simscape 模块

	AC Cable (Three-Phase)	Three-phase AC power cable
	Coupled Lines (Pair)	Magnetically coupled two lines
	Coupled Lines (Three-Phase)	Magnetically coupled three-phase lines
	DC Cable	High-fidelity frequency-dependent DC cable (自 R2025a 起)
	Frequency-Dependent Overhead Line (Three-Phase)	Three-phase overhead line which includes effects that vary as a function of frequency
	Transmission Line	Delay-based, lumped parameter, or distributed transmission line
	Transmission Line (Three-Phase)	Three-phase transmission line using lumped-parameter pi-section line model

主题

Model Cables and Lines in Simscape

Determine whether you need a delay-based, lumped-parameter, or distributed model and select a block that uses that model to represent your conductor arrangement.
- 步骤 1: Choose Mathematical Models that Represent Cables or Lines
- 步骤 2: Choose Blocks to Model Cables or Lines

精选示例

AC Cable with Bonded Sheaths

A three-phase cable model comprised of multiple pi-sections. Each phase is enclosed in a conductive sheath. The conductive sheath is connected to ground at either end of the cable through a simple resistance. A high-voltage source provides power to an unbalanced resistive load through the power cable. You can configure the sheath to be either series-bonded or cross-bonded. You can also configure the number of pi-sections. Increasing the number of pi-sections improves the accuracy but slows down the simulation. To facilitate convergence, the voltage source includes an internal impedance.

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Model High-Voltage Direct-Current Transmission Using Modular Multilevel Converters

Models a high-voltage, direct-current (HVDC) transmission system using modular multilevel converters (MMC).

自 R2025a 起
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Frequency-Dependent Transmission Line

A custom frequency-dependent transmission line model. The characteristic admittance and propagation function are first derived from the frequency-dependent resistance, reactance, and susceptance. The derived values are fitted using RF Toolbox. The Universal Line Model (ULM) [1] is then implemented in Simscape based on the fitted parameters. The results from the frequency-dependent transmission line model and the classic pi-section transmission line model are compared.

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IEEE 9 母线系统

此示例展示了如何对 9 母线三相电力系统网络进行建模。此示例基于 IEEE® 基准测试用例。有关详细信息，请参阅 P. M. Anderson 与 A. A. Fouad 合著的《Power System Control and Stability》（IEEE 出版社，2003 年）。

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