Description
ABB UNS0861A-P,V2 HIEE305084R0002
ABB UNS0861A-P, V2 HIEE305084R0002 Product Introduction
One sentence positioning: This is the power control module (V2 version) in ABB UN5000 static excitation system, responsible for providing stable and controllable excitation power for the generator excitation system. It is the core execution unit for generator voltage regulation and reactive power distribution.
Product type: Static Excitation Power Control Unit
System: ABB UN5000 Static Excitation System
Main model: UNS0861A-P
Version: V2 (V1 corresponds to part number HIEE305084R0001)
Part number: HIEE305084R0002
ABB UNS0861A-P,V2 HIEE305084R0002
Core functions:
Excitation power control: Convert AC power into controllable DC excitation current, drive the generator rotor winding, and maintain the generator terminal voltage at the given value
Automatic Voltage Regulation (AVR): Real time detection of generator terminal voltage, automatic adjustment of excitation current after comparison with the set value, ensuring voltage stability
Reactive power allocation: Reasonably allocate the reactive power load between multiple units operating in parallel
Power system stability: improving the static stability, transient stability, and dynamic stability of the power system
System architecture description:
The UN5000 static excitation system consists of multiple functional modules, with the UNS series being the power/control unit and the UNF series being the feedback/monitoring unit. As a power control module, UNS0861A-P works in conjunction with the WWF series feedback module to form a complete closed-loop excitation control circuit. Compared to V1, V2 version has upgraded and improved control algorithms, protection logic, or communication interfaces.
Typical application scenarios:
Thermal power plant: excitation control of steam turbine generator
Hydroelectric power plant: voltage regulation of hydro generators
Industrial self owned power plant: excitation of diesel generator set
Marine power generation: excitation system of ship power station
Gas turbine power generation: excitation of combined cycle units
Electrical parameters (based on typical specifications of UN5000 series):
Power supply: taken from the generator terminal or auxiliary power supply, rectified and output excitation current
Output: Controllable DC excitation current, driving the generator rotor
Response speed: millisecond level, meeting the requirements of transient stability in power systems
Protection function: multiple protections such as overvoltage, undervoltage, overcurrent, demagnetization, rotor grounding, etc
Communication and Interface:
Communicate with the UNF series feedback module to achieve closed-loop control
Support communication with the upper DCS/SCADA system
Equipped with status indication and fault alarm output
Physics and Installation:
Installation method: Standard slot type, inserted into the UN5000 excitation cabinet rack
Supports online replacement, does not support hot standby
Working temperature: -20 ° C to+60 ° C (industrial grade)
Protection level: Consistent with the overall protection of the excitation cabinet, the module body needs to be dust-proof and moisture-proof
Current status: This model belongs to ABB UN5000 excitation system spare parts and is currently circulating in inventory on the market. It is a product gradually being replaced by the new generation of excitation systems. If necessary, it is recommended to confirm compatibility with the existing UN5000 excitation cabinet and matching UNF module, and refer to the physical nameplate data of the module for accuracy.
