UNITROL-1000  励磁系统  提高电力系统的稳定性

型号：UNITROL-1000

品牌：ABB

UNITROL-1000 励磁系统作为发电机组的核心设备，是电厂业主和运营商根据电网要求结合其资产的运行可靠性、稳定性和快速瞬态响应来实现发电机组的可靠性。

即便是最稳定的电力网络现如今都在引入电网规范去维持系统的可靠性及加强全网优化。全球的电网规范在未来会发展的更加严格详尽，ABB也会持续在先进的技术和标准上进行投入，以达到最优的适。

UNITROL 1000系列是ABB面向100kVA到80MVA容量的同步电机的无刷励磁系统

UNITROL 1000系列部署在各种类型的行业，如发电厂，船舶的电力推进和辅助电源，柴油电力机车，港口起重机和矿区重载车辆等超过20000个项目。

ABB的励磁系统将自动化，电气系统，旋转电机控制，仪表化和先进的数字设备结合在一起，构成了完整可靠的产品提供给各种发电设备。

励磁系统是供给同步发电机励磁电流的电源及其附属设备的统称，主要包括励磁电源和励磁装置。它的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。

UNITROL-1000 励磁系统是发电机的重要构成部分，对电力系统及发电机本身的安全稳定运行有很大的影响。具体来说，励磁系统的作用包括：

控制发电机的端电压和无功功率，使其稳定运行在规定的范围内。

在并联运行的发电机组中，通过调节励磁电流，防止因负载不均衡而引起的各台发电机之间出现环流或非正常解列现象。

供给同步发电机的励磁电流，以提高电力系统的稳定性。

改善电力系统的功率因数。

在发电机发生短路时，通过调节励磁电流，减小短路电流的影响。

在发电机起动时，通过调节励磁电流，帮助发电机顺利起动。

励磁系统由励磁功率单元和励磁调节器两个主要部分组成。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。UNITROL-1000励磁系统的自动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。

UNITROL-1000  励磁系统  提高电力系统的稳定性

Model: UNITROL-1000

Brand: ABB

The UNITROL-1000 excitation system, as the core equipment of the generator set, is used by power plant owners and operators to achieve the reliability of the generator set according to the requirements of the grid, combined with the operational reliability, stability and fast transient response of their assets.

Even the most stable power networks are now introducing grid specifications to maintain system reliability and enhance overall network optimization. In the future, the global grid specification will be more rigorous and detailed, and ABB will continue to invest in advanced technologies and standards to achieve optimal adaptation. .

The UNITROL 1000 series is ABB's brushless excitation system for synchronous motors with capacity from 100kVA to 80MVA

The UNITROL 1000 series is deployed in more than 20,000 projects in various types of industries such as power plants, electric propulsion and auxiliary power supplies for ships, diesel-electric locomotives, port cranes and heavy-duty vehicles in mining areas.

ABB's excitation systems combine automation, electrical systems, rotary motor control, instrumentation and advanced digital equipment to form a complete and reliable product for a wide range of power generation equipment.

Excitation system is the general name of the power supply and its auxiliary equipment that supply the excitation current of synchronous generator, mainly including excitation power supply and excitation device. 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.

The UNITROL-1000 excitation system is an important part of the generator, which has a great impact on the safe and stable operation of the power system and the generator itself. Specifically, the role of the excitation system includes:

Control the terminal voltage and reactive power of the generator to make it run stably within the specified range.

In parallel operation of the generator set, the excitation current can be adjusted to prevent the circulation or abnormal disconnection between the generators caused by load imbalance.

Supply the excitation current of synchronous generator to improve the stability of power system.

Improve the power factor of the power system.

When short circuit occurs in the generator, the influence of short circuit current can be reduced by adjusting the excitation current.

When the generator starts, the excitation current is adjusted to help the generator start smoothly.

The excitation system consists of two main parts: excitation power unit and excitation regulator. Excitation power unit provides excitation current to the rotor of synchronous generator; The excitation regulator controls the output of the excitation power unit according to the input signal and the given regulation criteria. The automatic excitation regulator of the UNITROL-1000 excitation system plays an important role in improving the stability of the parallel units of the power system.