描述
ABB REF620C_F NCFNAAAAABC2DNN1XF是Relion®620系列中的一款高性能馈线保护和测控装置,专为中高压配电系统设计,具备全面的保护功能、灵活的通信能力和工业级可靠性。以下是基于技术文档和行业应用的详细解析:
一、核心技术参数与物理特性
电气规格
电源输入:支持宽范围AC/DC供电(100-240V AC或48-250V DC),具备50ms断电保持能力,适应复杂电网环境。
模拟量输入:
配置A:4路CT输入(1A/5A)、5路VT输入(100V/110V)
配置B:1路组合传感器输入(三相电流+电压)、1路剩余电流输入。
开关量接口:
配置A:24路数字量输入(干接点/湿接点可选)、14路数字量输出(继电器触点)
配置B:16路数字量输入、14路数字量输出。
通信接口:双以太网端口(支持HSR/PRP冗余)、RS-485(Modbus/DNP3)、光纤接口(IEC 61850-9-2 LE)。
物理设计
尺寸:177mm(宽)×177mm(高)×149.3mm(深),符合4U标准机架安装。
重量:约3.5kg(含插件),模块化结构便于现场维护。
环境适应性:工作温度-25°C至+70°C,湿度5%-95%(无凝露),通过IEC 60068-2振动/冲击测试(5g/30g),适用于恶劣工业场景。
二、保护功能与应用场景
全面保护体系
基础保护:
过流保护(定时限/反时限)、接地故障保护(零序电流/导纳法)、距离保护(三段式)。
负序电流保护(电机断相检测)、热过负荷保护(电缆温度模拟)。
高级功能:
分布式发电并网保护(防孤岛检测)、电容器组涌流抑制、弧光保护(需外接光纤传感器)。
断路器失灵保护(BFRO)、重合闸控制(检同期/检无压)。
故障定位:基于阻抗计算的快速短路定位(精度±5%),支持分布式故障定位(DFR)与故障录波(800Hz采样率,5秒波形存储)。
典型应用
配电系统:35kV以下环网柜、开闭所的进线/出线保护,支持单母线/双母线配置。
工业领域:冶金轧机、化工反应釜的电机保护,集成电机启动器控制与能效监测。
新能源接入:光伏/风电并网保护,支持PQ控制、低电压穿越(LVRT)。
智能电网:通过IEC 61850实现分布式能源(DER)聚合控制,支持虚拟电厂(VPP)架构。
三、通信与系统集成
协议兼容性
站控层:原生支持IEC 61850 Edition 2,包括GOOSE快速跳闸(<10ms)、SV采样值同步(IEEE 1588 PTP)。
间隔层:Modbus TCP/RTU、DNP3.0、IEC 60870-5-103,无缝对接SCADA/DCS系统。
冗余机制:HSR(高可用性无缝冗余)支持双环网自愈(<20ms),PRP(并行冗余协议)实现零切换时间。
数字化特性
配置工具:基于Relion®Manager软件,支持IEC 61850 SCL文件导入/导出,实现工程组态自动化。
远程运维:通过Web界面(HTTPS加密)实时监控波形、定值组切换、事件日志查询
The ABB REF620C_F NCFNAAAAABC2DNN1XF is a high-performance feeder protection and measurement and control device in the Relion®620 series.Designed specifically for medium-and high-voltage power distribution systems,it offers comprehensive protection functions,flexible communications,and industrial-grade reliability.The following is a detailed analysis based on technical documentation and industry applications:
I.Core Technical Parameters and Physical Characteristics
Electrical Specifications
Power Input:Supports a wide range of AC/DC power supplies(100-240V AC or 48-250V DC)and features a 50ms power-off holdover capability,adapting to complex power grid environments.
Analog Inputs:
Configuration A:4 CT inputs(1A/5A),5 VT inputs(100V/110V)
Configuration B:1 combined sensor input(three-phase current+voltage),1 residual current input.Digital Interfaces:
Configuration A:24 digital inputs(dry contact/wet contact selectable),14 digital outputs(relay contacts).
Configuration B:16 digital inputs,14 digital outputs.
Communication Interfaces:Dual Ethernet ports(supports HSR/PRP redundancy),RS-485(Modbus/DNP3),fiber optic interface(IEC 61850-9-2 LE).
Physical Design
Dimensions:177mm(width)×177mm(height)×149.3mm(depth),compatible with a standard 4U rack mount.
Weight:Approximately 3.5kg(including plug-ins).Modular construction facilitates on-site maintenance.
Environmental Compatibility:Operating temperature-25°C to+70°C,humidity 5%-95%(non-condensing),and meets IEC 60068-2 vibration/shock tests(5g/30g),suitable for use in harsh industrial environments.II.Protection Functions and Application Scenarios
Comprehensive Protection System
Basic Protection:
Overcurrent Protection(Definite Time/Inverse Time),Ground Fault Protection(Zero Sequence Current/Admittance Method),Distance Protection(Three-Stage).
Negative Sequence Current Protection(Motor Phase Loss Detection),Thermal Overload Protection(Cable Temperature Simulation).
Advanced Functions:
Distributed Generation Grid-Connected Protection(Anti-Islanding Detection),Capacitor Bank Inrush Current Suppression,Arc Flash Protection(External Fiber Optic Sensor Required).
Breaker Failure Reduction(BFRO),Reclosing Control(Synch Check/Dead Voltage Check).
Fault Location:Fast short-circuit location based on impedance calculation(±5%accuracy),supporting Distributed Fault Location(DFR)and fault recording(800Hz sampling rate,5-second waveform storage).
Typical Applications
Distribution Systems:Incoming/Outgoing Line Protection for Ring Main Units and Switchgear(35kV and below),supporting single/dual busbar configurations.Industrial:Motor protection for metallurgical rolling mills and chemical reactors,integrated motor starter control,and energy efficiency monitoring.
Renewable Energy Integration:Grid-connected protection for photovoltaic/wind power,supporting PQ control and low voltage ride-through(LVRT).
Smart Grid:Aggregated control of distributed energy resources(DER)enabled by IEC 61850,supporting virtual power plant(VPP)architectures.
III.Communications and System Integration
Protocol Compatibility
Station Control Layer:Natively supports IEC 61850 Edition 2,including GOOSE fast tripping(<10ms)and SV sampled value synchronization(IEEE 1588 PTP).
Bay Layer:Modbus TCP/RTU,DNP3.0,and IEC 60870-5-103,seamlessly integrating with SCADA/DCS systems.
Redundancy:High-Availability Seamless Redundancy(HSR)supports dual-ring network self-healing(<20ms),and Parallel Redundancy Protocol(PRP)achieves zero switchover time.Digital Features
Configuration Tool:Based on Relion®Manager software,supports IEC 61850 SCL file import/export for automated engineering configuration.
Remote Operation and Maintenance:Real-time waveform monitoring,setting group switching,and event log query via the web interface(HTTPS encryption).
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