ABB REG216

Details

ABB REG216 is an advanced digital generator protection module, widely used in power system protection.

Usage Parameters

Power supply: 216NG61, 216NG62 and 216NG63 auxiliary DC power supply input range is 36 to 312V DC, output 24V DC; 150 watts, output short circuit, overload protection; can be connected in parallel to increase rating and achieve redundancy, 3 rack spaces are required.

Processor: Using 32-bit 80486DX-2 processor, application software is stored in flash EPROM, while operation data is stored in RAM, and settings are stored in non-volatile flash EPROM. It has a potential-free RS-423 interface for PC operation.

Analog input unit: 216EA62 can realize simultaneous sampling of 24 inputs, 6 inputs per group, sampling frequency 600 (720) Hz, frequency 50 (60) Hz; occupies 2 rack spaces.

Digital output unit: 216AB61 digital output controls the relays in the output auxiliary relay assembly through 32 output terminals, has short-circuit protection function, and relay activation status LED indication; occupies 1 rack space. Trip output and switch input unit: 216DB61 provides 8 output terminals for auxiliary trip relay bipolar control, and monitors the output of 16 input terminals for the switch input of the auxiliary relay assembly. Activated outputs and inputs are indicated by LEDs; occupies 1 rack space.

Product function

General protection function: REG216 provides a variety of protection functions, including overcurrent protection, undervoltage protection, overvoltage protection, reverse power protection, real-time monitoring of the generator operation status, to ensure stable operation of the generator set and avoid failures. Differential protection technology based on the vector product principle is also adopted, which can maintain high stability in the case of through faults and CT saturation. The differential protection action time is less than 30ms, which can effectively protect the generator from damage.

Modular design: Both software and hardware adopt modular design, and users can configure them according to actual needs. The installation and configuration are quick, the connection is simple, the flexibility is strong, and the scalability is strong. Fewer hardware modules are required for the whole protection scheme. The rack can be interconnected on a large scale in the 21 rack spaces of the whole device to accommodate other protection relays.

Digital signal processing: All protection functions are operated with system voltage and current sampling values. The sampling rate of the analog input unit is 12 times per cycle, and the dynamic range is 15 bits. All further signal processing is performed at a purely digital level. The digital filtering suppresses the DC component and harmonics very thoroughly, ensuring the universal applicability of this protection function with high accuracy and good long-term stability. The continuous self-monitoring of the hardware is mainly carried out through the software cycle test program, which enables it to detect and avoid impending fault conditions in time, thereby improving the reliability of the entire system. It has a non-volatile event and interference record memory for storing the same information.

Communication and coordination functions: The device has a standard interface that is compatible with a variety of process control systems, assisting in data exchange with the highest process control level, such as binary reporting of digital status and events, measured values and protection parameters. Connection with the control station through information transmission enables time clock synchronization for time stamping of events.

Flexible configuration and logical combination: Users select the required protection functions from a large library of protection functions available on the PC. Parameter settings include processing unit allocation, input channels, pickup settings, time delays, working characteristics definition, trip logic, control signal logic, etc. Digital input and output signals can also be logically combined inside the protection device to meet different application scenarios.

Scope of application

ABB REG216 is mainly used for the protection of generators and transformers, and is widely used in industries such as power plants and renewable energy facilities. Here, generator protection is crucial to the reliability and stability of the entire system.