ABB 216VC62A Numerical Generator Protection

Application

Protection functions

The desired protection functions to suit the particular application can simply be selected from a comprehensive library using the personal computer. 

No knowledge of computer programming is required.

• Digital signals can be combined to perform logical functions e.g. 

External enabling or blocking signals with the output signals of an internal protection function and then used to block one of the other protection functions.

Hardware

Product overview

1. Model and positioning

Model name: ABB 216VC62A Digital Generator Protection Device Product positioning: A multifunctional digital protection and monitoring device designed specifically for medium and large generators, supporting full lifecycle protection of generators, suitable for scenarios such as thermal power, hydropower, gas power generation, and industrial self owned power plants. It can provide accurate fault detection, rapid protection actions, and comprehensive equipment status monitoring.

2. Core values

Triple protection system: integrated electrical quantity protection, non electrical quantity protection, and system level redundancy design

Digital technology: high-speed data processing based on microprocessors, supporting IEC 61850 communication, compatible with smart grid architecture

Flexible configuration: Through software defined protection logic, adapt to different types of generators (synchronous/asynchronous generators, rotating excitation/static excitation systems)

Core protection function

Non electrical quantity protection

Temperature monitoring: Supports 6-channel PT100/PT1000 winding temperature and bearing temperature input, temperature rise rate protection (5 ℃/min warning, 10 ℃/min trip)

Mechanical protection: vibration amplitude monitoring (4-20mA input), shaft displacement protection (± 2mm measurement range, accuracy 0.1% FS)

Process interlocking: Integrated with 3 process signal inputs (such as turbine trip, low lubricating oil pressure), supporting dual redundant interlocking of hard wiring and communication

Auxiliary functions

Wave recording and event recording: Supports 8-channel synchronous wave recording (sampling rate 1000Hz), stores the last 100 fault wave recordings (each lasting 10 seconds)

State monitoring: Real time calculation of generator power factor, efficiency, and winding thermal aging index (based on IEEE Std 120-2018 model)

Remote operation and maintenance: Built in web server, supporting real-time monitoring through mobile app (WiFi module optional)

Technical Parameter

1. Electrical parameters

Rated voltage: AC 100V/220V (voltage input), DC 24V/110V/220V (power input, ± 15% fluctuation adaptation)

Rated current: 5A/1A (current input, compatible with CT secondary side)

Frequency range: 45-65Hz

Protection accuracy: Current/voltage: ± 0.5% FS, frequency: ± 0.01Hz

Communication interface: 2 x IEC 61850-9-2 LE fiber optic interface, 1 x Modbus TCP/RTU, 1 x RS485 (supports Profibus DP)

2. Machinery and Environment

Dimensions: 19 inch rack mounted (482mm × 260mm × 180mm), 3U height

Installation method: panel installation/rail installation (optional bracket required)

Working temperature: -40 ℃~+70 ℃ (no fan self cooling), humidity 5%~95% (no condensation)

Protection level: IP40 (front panel), compliant with IEC 61000-6-2 industrial electromagnetic compatibility standard

Working principle

Data Collection Layer

Sensor access: Collect voltage/current transformer signals through high-precision ADC (24 bits), supporting Roche coil/traditional CT/PT

Synchronization timing: Supports IEEE 1588v2 precision timing (accuracy ≤ 1 μ s) to ensure synchronization of waveform data between multiple devices

Execution Layer

Trip output: 8 independent trip contacts (configurable for hold/pulse mode), supporting trip signal self hold (requiring external reset)

Warning output: 4-channel warning contacts (such as overload warning, high temperature), contact capacity 24VDC/2A

Typical application scenarios

1. Protection scheme for thermal power generators

Configuration: Single 216VC62A device+redundant CT/PT circuit

Core functions:

Generator outlet circuit breaker failure protection (in conjunction with busbar protection device)

Rotor grounding protection (injection type DC detection, grounding resistance measurement range 0.1k Ω~10M Ω)

Plant power switching interlock (real-time communication with fast switching device, switching time ≤ 80ms)

2. Protection scheme for hydroelectric generators

Special Features:

Turbine overspeed protection (redundant judgment of two out of three speed signals, adjustable operating speed from 115% to 150% of rated speed)

Low frequency oscillation suppression (PSS power oscillation damper, phase compensation range ± 180 °)

Non full phase protection (supports inconsistent detection of 2-phase/3-phase circuit breakers, action time ≤ 50ms)

Key advantages

1. Technological leadership

High speed processing platform: using ARM Cortex-A9 dual core processor (400MHz), protecting logic operation cycle ≤ 1ms

Adaptive algorithm: dynamically adjust protection settings based on real-time parameters of the generator (such as load and temperature) to avoid misoperation/refusal to operate

2. Engineering convenience

One click tuning tool: ABB Relion ®  The Manager software automatically generates protection settings (enter the generator nameplate parameters)

Plug and play design: supports hot swapping (requires power to be disconnected first), automatically loads configuration files after module replacement (via SD card)

3. Reliability design

Triple redundancy: CPU redundancy+power redundancy+communication redundancy (redundant modules need to be selected)

Fault self diagnosis: Real time monitoring of internal temperature, memory verification, clock synchronization status of the device, self diagnosis cycle of 100ms