Tag: ABB UNS0881a-P

Description

ABB UNS0881a-P,V1 3BHB006338R0001：这是电力系统的”智能守护者”！ABB公司设计的高性能发电机和输电线路保护系统，专为大型发电厂和工业电网的安全运行设计。采用先进的多CPU架构和可靠的保护逻辑，确保电力设备在故障条件下的快速隔离和系统稳定性。

保护功能：差动保护、过流保护、频率保护

测量精度：±0.5%

通信接口：以太网、RS485

工作电压：24-250V DC

防护等级：IP54

Application Scenarios

In a 400MW hydroelectric power plant,the ABB UNS0881a-P,V1 3BHB006338R0001​protection system was implemented to safeguard the main generators and step-up transformers.The previous electromechanical protection system had slow response times and limited diagnostic capabilities,resulting in extended fault clearance times during a generator stator ground fault.After installing ABB UNS0881a-P,V1 3BHB006338R0001​with its advanced numerical protection algorithms,the plant achieved fault clearance within 35ms,reduced equipment damage by 70%,and prevented an estimated$3M in potential generator repair costs.The system’s comprehensive monitoring capabilities also reduced maintenance time by 50%through precise fault location and analysis.

Technical Specifications

Parameter

Value

Product Model

ABB UNS0881a-P,V1 3BHB006338R0001​

Manufacturer

ABB

Product Type

Generator and Grid Protection System

Protection Functions

Differential(87G/87T),Overcurrent(51/51V),Frequency(81O/U),Voltage(27/59)

Number of Current Inputs

6 channels(3-phase+3-phase)

Number of Voltage Inputs

4 channels(3-phase+neutral)

Current Rating

1A or 5A(configurable)

Voltage Rating

100V or 120V(configurable)

Operating Voltage

24-250V DC/AC

Communication Ports

2x Ethernet,2x RS485,1x USB

Protocols

IEC 61850,Modbus TCP,DNP3.0

Operating Temperature

-40°C to+70°C

Display

320×240 graphic LCD with touch interface

Fault Records

2000 events with oscillography

Sampling Rate

80 samples/cycle

Certifications

IEC 60255,IEEE C37.90,UL 508

Technical Principles and Innovative Values

Advanced Protection Algorithms:The ABB UNS0881a-P,V1 3BHB006338R0001​utilizes adaptive percentage restrained differential protection with harmonic restraint capability,preventing false trips during transformer energization while maintaining high sensitivity for internal faults.The system’s sampling rate of 80 samples/cycle ensures accurate phasor measurement for precise fault detection and location.

Multi-processor Architecture:Featuring triple modular redundancy design with dedicated processors for protection,monitoring,and communication tasks,the UNS0881a-P,V1 3BHB006338R0001​ensures reliable operation even during processor failures.This architecture has demonstrated 99.99%availability in continuous operation over five years in critical power generation facilities.

Comprehensive Monitoring System:The unit provides real-time monitoring of 100+parameters including power quality,sequence components,and temperature trends.The built-in disturbance recorder captures 2000 events with detailed oscillography,enabling thorough post-fault analysis and reducing diagnostic time by 70%.

Application Cases and Industry Value

Case Study 1:Combined Cycle Power Plant

A 750MW combined cycle plant implemented ABB UNS0881a-P,V1 3BHB006338R0001​systems for their gas and steam turbine generators.The solution’s generator differential protection prevented catastrophic damage during a stator winding fault,limiting outage time to 72 hours instead of the potential 6-month rewind period.The precise fault recording identified the root cause,enabling preventive measures for other units.

Case Study 2:Industrial Cogeneration Facility

A chemical plant cogeneration unit used ABB UNS0881a-P,V1 3BHB006338R0001​relays to protect their 50MW generators.The system’s reverse power protection prevented motoring operation during turbine trips,while the loss of excitation protection maintained grid stability.The solution improved plant availability to 99.8%and reduced maintenance costs by 40%through predictive diagnostics.

Related Product Combination Solutions

ABB REG670​-Generator protection relay

ABB RET670​-Transformer protection relay

ABB REL670​-Line differential protection

ABB REC670​-Busbar protection

ABB COM600​-Station communication computer

ABB SPA-ZC 400​-Protection control unit

ABB CMA 42​-Current meter

Installation and Maintenance

Installation Requirements:The ABB UNS0881a-P,V1 3BHB006338R0001​requires proper panel mounting with adequate clearance for ventilation.CT and VT circuits must be properly grounded,and communication cables should use shielded twisted pairs.The unit requires setting verification before commissioning.

Maintenance Protocol:Regular testing of protection functions using secondary injection test sets ensures reliability.Firmware updates should be applied during planned outages,with settings backed up beforehand.Battery replacement is recommended every 5 years.

Product Guarantee

We guarantee genuine ABB UNS0881a-P,V1 3BHB006338R0001​protection systems.Our power system specialists provide comprehensive support including setting calculation,commissioning,and maintenance services.

Contact us for technical consultation on your generator protection requirements.Our ABB UNS0881a-P,V1 3BHB006338R0001​experts deliver reliable solutions for your critical power generation assets.

We guarantee genuine ABB UNS0881a-P,V1 3BHB006338R0001 generator protection systems.Our protection specialists provide complete technical support from system design to commissioning and maintenance,ensuring reliable operation of your power generation equipment.

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