ABB REF545KB133AAAA High Performance Protection Relay

ABB REF545KB133AAAA High Performance Protection Relay

Core positioning and core advantages of the product

REF545KB133AAAA is positioned with the core values of "comprehensive protection, intelligent linkage, and stable reliability". In response to the high complexity of faults and the difficulty of operation and maintenance in medium and high voltage systems, it demonstrates four core advantages and fully meets the stringent requirements of modern power systems:

1. Full scenario protection capability: Breaking through the limitations of traditional relays with single functions, integrating protection logic that covers multiple types of equipment such as lines, transformers, generators, and busbars. It can be quickly adapted to different application scenarios through software configuration, and function upgrades can be achieved without replacing hardware, greatly improving equipment utilization.

2. High anti-interference and environmental adaptability: Adopting a dual electromagnetic shielding design and wide range power adaptive technology, it can operate stably in harsh environments such as industrial strong electromagnetic interference, severe voltage fluctuations, and -25 ℃ to+70 ℃. At the same time, it has moisture-proof and dust-proof properties, and is suitable for various complex industrial sites.

3. Intelligent collaboration and communication capabilities: It fully supports mainstream power communication protocols such as IEC 61850-9-2LE and IEC 60870-5-104, and can seamlessly integrate with smart grid dispatch systems and industrial control systems (ICS) to achieve real-time interaction of protection actions, telemetry data, and equipment status, providing data support for intelligent grid dispatch.

4. High reliability and redundancy design: The core processor adopts a dual core architecture, with redundant configurations for key power supplies and I/O circuits. The mean time between failures (MTBF) exceeds 200000 hours, and the fault self-healing time is less than 50ms, minimizing the impact of equipment failures on the power system.

Core protection functions and control characteristics

2.1 Comprehensive Protection Function System

REF545KB133AAAA has built a multi-level and three-dimensional protection function system, which can accurately identify and quickly handle various faults and abnormal working conditions in the power system. The core protection functions include:

-Main equipment dedicated protection: providing differential quick break, ratio differential, overexcitation, and winding temperature protection for transformers; Configure stator grounding, rotor one/two point grounding, demagnetization, and reverse power protection for the generator; Implementing differential protection and failure protection for busbars, comprehensively covering the core fault scenarios of critical power equipment.

-Line core protection: equipped with longitudinal differential protection, distance protection (four segment type), and directional overcurrent protection (timed limit+inverse time limit), the protection logic can be flexibly configured according to the length and load characteristics of the line, effectively responding to faults such as short circuit, grounding, and overload of the line.

-System anomaly protection: including protection against overvoltage, low voltage, voltage imbalance, and frequency anomalies (over/under frequency), while supporting harmonic detection and control linkage functions, effectively suppressing damage to equipment caused by grid harmonics and ensuring power supply quality.

-Backup and Failure Protection: Equipped with comprehensive remote and near backup protection logic, when the main protection refuses to operate or the circuit breaker fails, the backup protection circuit can be quickly activated to avoid the expansion of the fault; At the same time, it supports the function of starting and tripping in case of failure, improving the reliability of system fault removal.

2.2 Flexible control and linkage characteristics

In addition to its core protection function, this relay also integrates rich control and linkage functions to enhance the operational efficiency and management level of the power system

1. Logic programmable control: Built in graphical logic programming tools support user-defined protection logic and control circuits, enabling linkage control with on-site circuit breakers, isolation switches, soft starters, and other devices to meet personalized operational needs.

2. Load management function: It has load monitoring, overload warning, and automatic load shedding functions. When the system load exceeds the set threshold, non critical loads can be automatically cut off according to priority to ensure the continuous power supply of core equipment.

3. Synchronization and parallel control: Integrated with automatic quasi synchronization function, it can accurately detect the voltage, frequency, and phase difference between the generator to be connected and the system, achieve smooth parallel connection, and avoid damage to equipment caused by parallel impact.

Typical application scenarios

Based on its full scenario adaptation capability and high reliability, REF545KB133AAAA is widely used in the following key areas:

-Large industrial enterprises: In continuous production enterprises such as steel, chemical, semiconductor, etc., provide protection for key equipment such as self owned power plant generators, high-voltage motors, rectifier transformers, etc., to avoid production interruptions and equipment damage caused by power failures.

-Regional power grid hub: As the core protection equipment of medium and high voltage substations, it realizes comprehensive protection and control of transmission lines, busbars, and main transformers, ensuring the safe and stable operation of regional power grids and reliable power supply.

-New energy power plants: adapted to new energy power generation systems such as wind power and photovoltaics, providing dedicated protection for step-up transformers and collection lines, while supporting communication linkage with new energy dispatch systems to facilitate efficient grid connection of new energy.

-Rail Transit Power Supply System: For the traction power supply system of subway, light rail and other rail transit systems, provide strong anti-interference ability and fast action protection solutions to ensure the safe operation of rail transit.

Key technical parameters

The excellence of REF545KB133AAAA lies in its precise hardware configuration and optimized software algorithms. The core technical parameters are shown in the table below, providing key basis for equipment selection and system design:

parameter category

specific parameters

detailed explanation

Rated working power supply

DC 220V/110V； AC 220V/110V

Compatible with both AC and DC power sources, supporting automatic power switching and adapting to different power supply scenarios

rated current

5A/1A (configurable)

Adapt current transformers with different transformation ratios to meet the current measurement needs of medium and high voltage systems

rated voltage

100V (line voltage/phase voltage)

Adapt to standard voltage transformer output to ensure voltage measurement accuracy

sampling precision

Current/voltage: ± 0.1%; Power: ± 0.2%

High precision data collection provides reliable data support for protective actions and measurement

Protection action time

Differential protection: ≤ 5ms; Quick break protection: ≤ 8ms

Ultra fast fault response, minimizing the duration of faults to the greatest extent possible

communication interface

2 Gigabit Ethernet, 2 RS485, 1 fiber optic interface

Support wired and optical fiber communication to meet different transmission distances and anti-interference requirements

environmental adaptability

Temperature: -25 ℃~+70 ℃; Humidity: 5%~95% (no condensation)

Suitable for harsh environments such as high temperature and humidity, suitable for outdoor cabinets and industrial plant installations

Protection level

IP40 (whole machine), IP20 (panel)

Effective dust and splash prevention to ensure stable operation of equipment on industrial sites

Installation, debugging, and maintenance features

5.1 Convenient Installation and Debugging

This relay adopts a modular design and standardized installation structure, suitable for installation in a 19 inch standard cabinet, with a compact size and low installation space requirements; The wiring terminal adopts a spring type crimping design, which is firm and easy to disassemble. With clear terminal identification, it greatly improves the efficiency of on-site wiring. In terms of debugging, equipped with specialized debugging software (ABB Relion) ®  Engineer）， Support local and remote debugging through USB and Ethernet, provide graphical configuration interface and one click parameter import/export function, reduce debugging difficulty and shorten debugging cycle.

5.2 Intelligent operation and maintenance management

To reduce operation and maintenance costs and improve operation and maintenance efficiency, REF545KB133AAAA integrates comprehensive intelligent operation and maintenance functions, achieving full process management from fault warning to fault handling:

-Full state monitoring: Real time monitoring of the operating status of the core components of the relay itself (CPU, power supply, communication module), and online monitoring of parameters such as temperature, insulation status, and oil level of the protected equipment through external sensors, providing early warning of potential equipment failures.

-High precision fault recording: Equipped with synchronous recording function of 16 analog signals and 32 switch signals, with a recording frequency of up to 2kHz, it can fully record the electrical waveform from 200ms before the fault occurrence to 500ms after the fault, providing accurate data for fault cause analysis.

-Remote operation and diagnosis: Through Ethernet or fiber optic communication, remote parameter configuration, firmware upgrade, and fault diagnosis functions can be achieved. Operation and maintenance personnel can complete equipment maintenance without arriving on site, greatly reducing operation and maintenance costs and security risks.

-Event Recording and Traceability: Supports classified storage of various events such as protection actions, alarm information, and operation records, with a recording capacity of up to 100000 records. It has the characteristic of not losing during power outages, supports data export and report generation, and meets the needs of power system operation and maintenance traceability.

Product Compliance and Certification

ABB REF545KB133AAAA strictly adheres to international and domestic standards related to power equipment, and has passed multiple authoritative certifications, ensuring that the product reaches the industry's top level in terms of safety, reliability, and compatibility. The main certifications include: IEC 60255 series standards (general standards for relay protection devices), IEC 61850 series standards (substation communication networks and systems), GB/T 14285-2006 "Technical specifications for relay protection and safety automatic devices", GB/T 17626 "Electromagnetic compatibility testing and measurement techniques", etc. At the same time, the product has passed CE certification and UL certification, which can meet the market access requirements of different regions around the world and is suitable for various power system projects at home and abroad.