ABB 70AA02B-E-HESG447388R1 自动励磁调节

【产品详情】

70AA02B-E-HESG447388R1自动励磁调节是自动调节同步发电机、同步调相机和大型同步电动机励磁以提高电力系统的稳动态性能的措施。

自动励磁调节的组成

随着调节器的功能和组成不同，调节器的组成或简单或复杂，但基本上可以分为：

测量链接

感受信息偏差的数量。

全面的放大链接

放大和综合各种信息。

实施链接

实现相移和可控触发。

自动励磁调节功能

（1）在正常工作条件下，将母线电压保持在给定水平，即起到电压调节的作用。

（2）机组间无功功率稳定分配。

（3）提高电力系统运行的动态性能和输电线路的传输能力。配备无故障区的快速励磁调节器的发电机可在人工稳定区运行，系统事故下具有高峰值倍数的快速励磁系统可以提高系统的暂态稳定性。

（4）将稳定器引入励磁控制后，可提供适当的阻尼转矩，有效抑制低频振荡，提高电力系统的动态质量。

ABB 70AA02B-E-HESG447388R1 自动励磁调节

【英文介绍】

Automatic excitation regulation is a measure to automatically adjust the excitation of synchronous generator, synchronous regulator and large synchronous motor to improve the stable dynamic performance of power system.

The composition of automatic excitation regulation

Depending on the function and composition of the regulator, the composition of the regulator can be simple or complex, but it can be basically divided into:

Measurement link

Feel the amount of information bias.

Comprehensive zoom links

Amplify and synthesize all kinds of information.

Implementation link

Realize phase shift and controlled trigger.

Automatic excitation regulation function

(1) Under normal working conditions, the bus voltage is maintained at a given level, that is, it plays the role of voltage regulation.

(2) Stable distribution of reactive power between units.

(3) Improve the dynamic performance of power system operation and transmission capacity of transmission lines. A generator equipped with a fast excitation regulator in the fault-free zone can operate in the artificial stability zone. A fast excitation system with a multiple of peak value can improve the transient stability of the system under system accidents.

(4) After the stabilizer is introduced into the excitation control, it can provide appropriate damping torque, effectively inhibit low-frequency oscillation, and improve the dynamic quality of the power system.

ABB 70AA02B-E-HESG447388R1 自动励磁调节

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