AT686W-1-1-1-1 励磁控制系统 实现了对发电机输出的电压

AT686W-1-1-1-1 励磁控制系统是电力系统中的一个重要组成部分，主要由发电机机端参数、励磁调节单元和整流单元组成，形成一个反馈控制系统。它的主要功能是调节控制发电机的输出电压，并对发电机的无功功率、功率因数和励磁电流等重要参数进行调节，以确保电力系统在正常运行的情况下，发电机机端高压侧电压与整个电网电压维持在同一水平。此外，励磁控制系统还负责对发电机之间的无功负荷进行合理调配，以提高电力系统的稳定性。励磁控制系统的硬件组成主要包括励磁调节器、功率整流器和灭磁系统。其中，励磁调节器是控制系统的核心，它根据发电机的运行状态和电网的电压、电流等参数，自动调节励磁电流的大小和方向，从而实现对发电机输出电压和无功功率的精确控制。功率整流器则将励磁调节器输出的控制信号转换为实际的励磁电流，供给发电机使用。灭磁系统则用于在发电机停机或故障时，迅速切断励磁电流，保护发电机和电网的安全。随着电力电子技术的发展和现代控制理论的进步，励磁系统的各项性能及可靠性都有了显著提高。现在的新型励磁控制系统不仅具有自动电压调节、励磁电流调节等基本功能，还具备恒功率因数或恒无功运行方式等高级功能。同时，为了保证电网及机组安全稳定运行，励磁系统还需要附加必要的限制及保护功能，如过励限制、欠励限制、V/Hz限制等。总之，AT686W-1-1-1-1 励磁控制系统是电力系统中不可或缺的一部分，它通过对发电机励磁电流的精确控制，实现了对发电机输出电压和无功功率的调节，保证了电力系统的稳定运行和高效工作。

AT686W-1-1-1-1

The AT686W-1-1-1 excitation control system is an important component of the power system, mainly composed of generator terminal parameters, excitation regulation unit, and rectification unit, forming a feedback control system. Its main function is to regulate and control the output voltage of the generator, and adjust important parameters such as reactive power, power factor, and excitation current of the generator to ensure that the high-voltage side voltage of the generator terminal is maintained at the same level as the voltage of the entire power grid under normal operation of the power system. In addition, the excitation control system is also responsible for reasonable allocation of reactive loads between generators to improve the stability of the power system. The hardware composition of the excitation control system mainly includes the excitation regulator, power rectifier, and demagnetization system. Among them, the excitation regulator is the core of the control system. It automatically adjusts the magnitude and direction of the excitation current based on the operating status of the generator and parameters such as voltage and current of the power grid, thereby achieving precise control of the output voltage and reactive power of the generator. The power rectifier converts the control signal output by the excitation regulator into the actual excitation current, which is supplied to the generator for use. The demagnetization system is used to quickly cut off the excitation current in case of generator shutdown or failure, protecting the safety of the generator and the power grid. With the development of power electronics technology and the advancement of modern control theory, the performance and reliability of excitation systems have significantly improved. The current new excitation control system not only has basic functions such as automatic voltage regulation and excitation current regulation, but also has advanced functions such as constant power factor or constant reactive power operation mode. At the same time, in order to ensure the safe and stable operation of the power grid and units, the excitation system also needs to add necessary restrictions and protection functions, such as over excitation limit, under excitation limit, V/Hz limit, etc. In summary, the AT686W-1-1-1 excitation control system is an indispensable part of the power system. Through precise control of the excitation current of the generator, it realizes the regulation of the output voltage and reactive power of the generator, ensuring the stable operation and efficient operation of the power system.