Busbar
潮流分析母排连接器
库:
Simscape /
Electrical /
Connectors & References
描述
Busbar 模块是用于潮流分析的连接器。该模块用于与频率-时间仿真模式兼容的三相 Simscape™ Electrical™ 网络。完成仿真后，该模块会添加一个注解，显示仿真启动时其每个三相电气守恒端口的电压、相位、有功功率和无功功率。对于要添加的注解，必须启用 Simscape 记录。
该模块将在基于时间的仿真模式下进行仿真，但除非网络与频率-时间仿真模式兼容并且您在 Solver Configuration 模块上选中了从稳态开始仿真，否则不会在初始潮流结果中添加注解。不过，当使用基于时间的仿真模式时，该模块会计算电压、相位、有功功率和无功功率的近似值。您可以在 Simscape 记录中查看这些值，或者通过暴露该模块上的可选测量端口来进行查看。近似水平取决于系统的平衡程度和当前谐波水平。
示例
2 母线潮流
A model of a two-bus three-phase power system network. The model uses three instances of the Load Flow Source block from Simscape™ Electrical™, one configured to be the swing bus, one configured to be the PV bus, and one configured to be the PQ load. The PV bus regulates its output to be at a voltage of 1.025 times rated voltage and to deliver 80MW active power to the network. The Swing bus regulates voltage at the other end of the transmission line to be one times rated voltage, and it delivers the requisite power to the network so that overall active and reactive powers balance. The Simscape initialization solver determines the required internal initial voltage amplitudes and phases in both the PV bus and the Swing bus so as to start in steady state.
IEEE 9 母线潮流
此示例展示了一个 9 母线三相电力系统网络的模型。此示例基于 IEEE® 基准测试用例，详细信息可参阅 P. M. Anderson 与 A. A. Fouad 合著的《Power System Control and Stability》（IEEE 出版社，2003 年）。Simscape™ 将其中两台发电机初始化为指定的功率和端电压，而将剩余的平衡母线发电机初始化为仅满足指定的电压。仿真完成后，生成的潮流解会附加到每条母排。其中四行分别对应于标幺电压、相位、有功功率和无功功率。查看母线 1，从注解中可以看到，平衡发电机向网络输送 76.4MW 的有功功率和 27.5MVAr 的无功功率。与原始基准测试用例存在差异的原因在于所使用的输电线模型和变压器配置不同。
使用潮流的感应电机初始化
Initialize a three-phase induction motor as part of a load flow analysis. When initializing an induction machine that is directly connected to an AC network, in steady state there is one degree of freedom which you can set by any one of shaft torque, shaft power, motor speed, or electrical power.
使用潮流的同步电机初始化
Initialize synchronous machine as part of a load flow analysis. When initializing a synchronous machine there are two degrees of freedom which can be set by any two of rotor angle, active power, reactive power and terminal voltage. The pair of variables that are constrained is set by the source type drop-down menu, this having options of Swing bus, PV bus and PQ bus. Here the machine is configured for a swing bus with a 1.02 per-unit voltage and zero degrees phase.
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）。
端口
输出
守恒
参数
扩展功能
版本历史记录
在 R2019b 中推出
