UAD149A0001-3BHE014135R0001  励磁系统  确保电力系统的安全稳定运行

UAD149A0001-3BHE014135R0001励磁系统是指供给同步发电机励磁电流的电源及其附属设备的统称，主要包括励磁变压器、功率整流单元、励磁调节器、起励、灭磁、保护、监视装置和仪表等。它一般由励磁功率单元和励磁调节器两个主要部分组成，其中励磁功率单元向同步发电机转子提供励磁电流，而励磁调节器则根据输入信号和给定的调节准则控制励磁功率单元的输出。

UAD149A0001-3BHE014135R0001励磁系统的技术性能及运行的可靠性，对供电质量、继电保护可靠动作、加速异步电动机自启动和发电机与电力系统的安全稳定运行都有重大影响。特别是在现 代电力系统的发展中，机组稳定极限降低的趋势促使励磁技术不断发展，励磁调节器对提高电力系统并联机组的稳定性具有相当大的作用。

此外，励磁系统还可以根据直流电源的类型进行分类，包括自励式励磁系统和外励式励磁系统。自励式励磁系统使用旋转设备本身产生的感应电动势作为电源信号来励磁，而外励式励磁系统则使用外部稳定的直流电源信号来励磁。

总的来说，UAD149A0001-3BHE014135R0001励磁系统是发电机的重要组成部分，其主要任务是向发电机的励磁绕组提供一个可调的直流电流，以满足发电机正常运行的需求，并确保电力系统的安全稳定运行。

UAD149A0001-3BHE014135R0001  励磁系统  确保电力系统的安全稳定运行

UAD149A0001-3BHE014135R0001 Excitation system refers to the supply of synchronous generator excitation current of the power supply and its auxiliary equipment, mainly including excitation transformer, power rectifier unit, excitation regulator, excitation, excitation out, protection, monitoring devices and instruments. It is generally composed of two main parts: excitation power unit and excitation regulator, wherein the excitation power unit provides excitation current to the synchronous generator rotor, and the excitation regulator controls the output of the excitation power unit according to the input signal and the given regulation criteria.

The technical performance and operation reliability of the UAD149A0001-3BHE014135R0001 excitation system have a significant impact on the quality of power supply, the reliable operation of relay protection, the acceleration of asynchronous motor self-start and the safe and stable operation of generators and power systems. Especially in the development of modern power system, the trend of reducing the stability limit of the unit promotes the continuous development of excitation technology, and the excitation regulator plays a considerable role in improving the stability of the parallel unit of the power system.

In addition, excitation systems can also be classified according to the type of DC power supply, including self-excited excitation systems and externally excited excitation systems. The self-excited excitation system uses the induced electromotive force generated by the rotating equipment itself as a power signal to excite, while the externally excited excitation system uses an external stable DC power signal to excite.

In general, UAD149A0001-3BHE014135R0001 excitation system is an important part of the generator, its main task is to provide an adjustable DC current to the excitation winding of the generator, to meet the needs of the normal operation of the generator, and to ensure the safe and stable operation of the power system.