ABB 216VC62A Numerical Generator Protection

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