ALSTOM MVAW11B1AB0513A

Description

Product Description

The ALSTOM MVAW11B1AB0513A is a critical module from Alstom’s (now part of GE Grid Solutions) Micom protection relay family, specifically from the P14x series (e.g., P141, P142, P143). This model is a multifunctional protection and control relay designed for the supervision and protection of overhead lines and underground cables in medium and high voltage networks. The ALSTOM MVAW11B1AB0513A provides comprehensive fault detection, including distance protection (zones 1-4), overcurrent protection, and auto-reclosing functions, making it a key component for ensuring grid stability and reliability. It features advanced local control capabilities, detailed metering, and extensive event recording. For utilities and industries with critical power distribution assets, the ALSTOM MVAW11B1AB0513A (Product Link) represents a sophisticated and robust solution for feeder protection. Its design integrates complex algorithms into a single, reliable unit, cementing the ALSTOM MVAW11B1AB0513A as a trusted device in electrical substations worldwide.

Product Parameters

• Product Type: Numerical Feeder Protection Relay (Distance & Overcurrent)

• Brand & Series: ALSTOM, Micom, P14x Series

• Model: ALSTOM MVAW11B1AB0513A

• Protection Functions: Distance protection (Mho, Quadrilateral characteristics), Definite & Inverse Time Overcurrent (Ph & Earth), Auto-reclosing (up to 4 shots), Breaker Failure, Undervoltage, Thermal Overload.

• Measurement: Comprehensive three-phase metering of V, I, P, Q, PF, Frequency, and Energy.

• Communication: Multiple serial ports (RS485/232) supporting protocols like IEC 60870-5-103, Modbus, DNP3.0. Optional Ethernet and IEC 61850.

• Inputs/Outputs: Configurable binary inputs for status signals and relay outputs for tripping, closing, and alarms.

• Display & Interface: Large backlit LCD with keypad for local control, setting, and event review.

• Power Supply: Wide-range DC or AC supply (e.g., 24-250V DC / 110-240V AC).

• Case Size: Typically a standard 19″ rack 4U or 6U case for panel mounting.

Advantages and Features

The ALSTOM MVAW11B1AB0513A delivers significant advantages for power system protection. Its core feature is Advanced Distance Protection, which provides selective and fast fault clearance for transmission and sub-transmission lines, improving system stability. It offers Flexible Auto-Reclosing Logic, configurable for single or three-phase operation, which is essential for restoring service quickly after transient faults. The relay provides High-Accuracy Fault Locator and Detailed Event Recording with oscillographic capabilities, which are invaluable for post-fault analysis and reducing outage times. User-Friendly Configuration is enabled through powerful PC software (Micom S1), allowing for complex settings and logic to be managed efficiently. For a balance of advanced protection and practical functionality, the ALSTOM MVAW11B1AB0513A (Product Link) is a comprehensive and reliable choice.

Application Cases in Various Fields

This protection relay is deployed on critical feeders in electrical power networks.

• Transmission Utilities: Protecting 110kV or 220kV overhead lines as the primary or backup protection.

• Distribution Utilities: Used on important 33kV or 66kV feeders connecting substations or feeding large industrial customers.

• Industrial Plants with Captive Generation: Protecting the tie-lines connecting the plant’s generation to the utility grid or protecting internal high-voltage distribution feeders.

• Railway Electrification: Protecting the 25kV or 2x25kV AC traction supply feeders.

• Renewable Energy Connections: Serving as the line protection relay at the point of interconnection for large wind or solar farms.

Comparison with Competing Products

The ALSTOM MVAW11B1AB0513A competes directly with other feeder protection relays featuring distance protection, such as the Siemens SIPROTEC 7SA6, the ABB REL670, and the GE Multilin D60. Its key differentiator lies in the Alstom Micom algorithm heritage, particularly its flexible and well-regarded distance protection characteristics and auto-reclosing schemes. Compared to simpler overcurrent-only relays, it provides much higher selectivity and is essential for meshed or long lines. The competition focuses on the nuances of the distance algorithms, user interface design, communication protocol support (especially IEC 61850), and the robustness of the configuration software. The ALSTOM MVAW11B1AB0513A is recognized for its strong performance in transmission and sub-transmission applications.

Selection Suggestions and Precautions

• Selection Suggestions:

  1. Application Analysis: Confirm that distance protection is required for your line (based on length, system configuration). For short lines, overcurrent protection may suffice.

  2. CT/VT Data: Have complete data for the connected Current Transformers (CT ratio, class) and Voltage Transformers (VT ratio) ready for accurate relay setting.

  3. Communication Protocol: Define the required communication protocol for SCADA integration (IEC 103, DNP3, Modbus, IEC 61850) and ensure the relay is ordered with the correct communication module.

  4. Settings Management: Plan for the use of the dedicated Micom S1 setting software. Familiarization with this tool is essential for commissioning.

• Precautions:

  1. Professional Settings Calculation: Distance protection settings (zone reaches, times, characteristics) must be calculated by a protection engineer using system data (line impedance, infeeds) to ensure correct coordination and avoid maloperation.

  2. CT Circuit Safety: Never open the secondary circuit of a live Current Transformer. Always ensure CT circuits are shorted before working on the relay terminals.

  3. Thorough Commissioning Testing: Perform comprehensive functional and injection tests using a primary injection test set or advanced relay test set to verify all protection functions, logic, and communication.

  4. Firmware & Software Compatibility: Ensure the relay’s firmware version is compatible with your version of the Micom S1 setting software.

  5. Source Authorized Devices: Always procure the genuine ALSTOM MVAW11B1AB0513A (Product Link) from GE Grid Solutions or their authorized distributors. Counterfeit relays pose an extreme risk; they may have incorrect protection algorithms, leading to failure to trip during a fault or unwanted tripping, potentially causing widespread blackouts and equipment damage.

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