GE IS200EISBH1AAB

The IS200EISBH1AAB is the optical fiber acquisition + ISBus redundant communication board of the EX2100 excitation system. In the Mark VI turbine control system, it undertakes excitation feedback acquisition, redundant controller data synchronization, ground detection signal forwarding and local debugging interface relay. The core highlights are optical fiber isolation and anti-interference, as well as support for triple redundancy. It is mostly used for excitation of large synchronous generators in power plants. The key points of use are anti-static, optical fiber protection, and version matching. Hot plugging is strictly prohibited.

Core Function

1. Internal interconnection of excitation controllers: As a dedicated communication hub for the three sets of redundant excitation controllers M1, M2, and C, it synchronizes control data, status, and set values through the ISBus bus to achieve redundant switching logic.

2. Optical fiber signal acquisition and forwarding: The optical fiber feedback signals of the generator rotor magnetic field, voltage and current of the exciter are collected and uploaded to the DSPX main controller via the backplane for closed-loop operation of excitation regulation.

3. Ground fault detection connection: Communicate with the EGDM ground detection module, transmit the ground monitoring signal of the excitation circuit, and participate in the excitation ground protection logic.

4. Debugging port relay: Connect the DSPX to the local debugging panel and handheld tools through the RS-232C channel, supporting parameter viewing, diagnosis, and debugging.

5. Status and Fault Reporting: On-board self-diagnosis uploads information such as communication faults, abnormal optical fiber links, and board hardware faults to the Mark VI system HMI, generating alarm events with time scales.

Product Advantages

1. Native redundancy adaptation:

Specifically designed for the EX2100 triple redundancy excitation, it ensures disturbance-free switching of the main controller and is suitable for key units in power stations.

2. Optical fiber isolation and anti-interference:

The signal on the high-voltage side of on-site excitation is transmitted via optical fiber, isolating strong current and large electromagnetic noise to prevent interference from causing incorrect excitation adjustment.

3. Integrated signal concentration:

The excitation feedback collection, internal bus, and debugging interface are integrated on a single board card, simplifying the wiring of the excitation cabinet.

4. Deep system diagnosis:

Equipped with link diagnosis, it can quickly locate fiber optic disconnection and bus abnormalities, reducing the time for troubleshooting unit faults.

5. Strong platform compatibility:

Standard VME 3U specification, directly compatible with Mark VI racks, and equipped with the EX2100 excitation complete control solution.

Application scenarios

1. Thermal power/gas power station: EX2100 excitation regulation system for gas turbine and steam turbine generator sets 

2. Oil and gas, chemical industry: Generator excitation control for large compressors and drive motors. 

3. Industrial self-owned power plants: Large synchronous generator excitation closed-loop control, voltage regulation, reactive power regulation. 

4. It is equipped with the Mark VI TMR control system and is used for critical power generation equipment with extremely high requirements for stability and availability.

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