Multilin D20/D200: Advanced Substation Controllers for Mission-Critical Automation

Overview

With the ability to support a wide range of communication protocols and applications, the D20 is interoperable with a broad range of intelligent electronic slave and master devices. It can execute simple to complex local logic, compile and process data, and report upstream to master stations. The D20's distributed, expandable I/O architecture and mission-critical automation control applications have made it the controller of choice in over 40,000 installations worldwide.

Key Benefits

Flexible and Reliable

• Substation client and server functionality: Maintains a distributed architecture for gathering and controlling data on substation equipment while sending data to master stations via serial RS-232, RS-485, fibre optic, or Ethernet interfaces for point-to-point, multi-drop, and remote connections.

• Broad protocol support: Supports a wide range of SCADA host protocols, IED protocols, communication options, I/O peripheral modules, and operation and maintenance utilities.

• Proven design: The D20's design and processing capabilities make it a flexible and reliable RTU or Gateway.

• Extensive protocol library: More than 100 communication protocols and applications.

• Scalable configurations: Simple to complex substation configurations with advanced automation applications.

• Easy commissioning: User-friendly commissioning and maintenance facilities ensure accurate RTU settings prior to live installations.

Scalable Distributed I/O Options

• Complete family of substation-hardened I/O modules provides scalability for large and small installations.

• Distributed architecture allows redundancy of I/O modules to increase reliability.

• Wide range of modules available with I/O ranges up to 300 VDC and support for DNP3 and GE Vernova's D.20 protocol.

Applications

Data Concentrator

Protocol Converter

Local Automation Platform

Data Translation Applications

User Programmable Logic

• LogiLinx™ module: IEC 61131-3 compliant PLC-type logic with full support for 5 programming languages

• Calculator module: Soft logic utility to perform mathematical and logical operations

Generation, Transmission, and Feeder Bay Automation

• Automatic Voltage Control: Maintains steady voltage based on user-defined targets and settings

• Local/Remote Data Translation: Master local/remote switch to control the local/remote state of distributed devices

• Secondary Master Trip/Close: Enables the use of individual relays as master trip/close relays

• Set-point Adjustment: Adjusts set points based on control request durations or analog input values

• Tap Position Indication: Translates status points into scaled analog input values to reflect transformer tap positions.

Distribution Automation

• Auto Reclose: Automatically recloses tripped circuit breakers following momentary faults

• Automatic Restoration: Patented load transfer scheme isolates faults and restores power to non-faulted sections

• Distribution Capacitor Control Algorithm: Improves reactive support during peak periods

• Fault Localization: Locates and isolates faults to reduce customer outage times

• Load and Dead Bus Transfer: Monitors a network of substations and moves load off overloaded transformers

• Load Shedding/Curtailment: Sheds load intelligently during overload conditions

Data Logging / Storage

• SOE Local Logger: Logs digital and analog SOEs to an external printer, PC, or CSV file

• Accumulator Freeze: Coordinates freezing of accumulator groups

• Event Storage: Stores history of current values, status, and time-tags for up to 7 days

• Historical Analog: Stores averaged historical values for up to 8 analog inputs

Communication Services

• Communication Watchdog: Monitors and reports the health of communications

• Substation Maintenance: Suppresses SCADA point reporting during substation maintenance

• Virtual Terminal: Directs remote access to connected devices

• Line Switch: Monitors main and secondary communication channels

• LAN Services: TFTP, SPT Server/Client, Time Server/Client

• COM Statistics: Records detailed communication pass/fail statistics

• IRIG-B Source: Time sync connected devices using IRIG-B

• SNTP Client: Time sync over an Ethernet LAN

Data Reduction and Summarizing

• Analog Reference: Monitors analog input hardware for good or bad reference values

• Data Change Detect: Toggles a status point when any data in a configured group changes.

• Alarm Prioritization: Manages 3-level alarms reported by GE Vernova's DART pole-top/pad-mount distribution RTU

• Analog Averaging: Averages analog values at regular intervals

• General Alarm: Groups alarms together to create summary alarms

• Top of Hour Analog Averaging: Averages analogs relative to the top of the hour

• Redundant I/O: Provides data from a backup source if the primary source is offline

Data Conversion

• Digital-Analog Value Conversion: Converts digital input groups to analog data using binary, BCD, or gray code encoding

• Digital Input to Counter: Counts the number of SOE or COS transitions on status points

• BCD Setpoint: Translates analog output requests into a group of BCD-encoded control points

• Accumulator Delta to Analog: Converts accumulators to analog values for protocols that do not support counters

• Time Stamp: Interprets each bit in an analog input as a status point

• Analog to Digital Conversion: Converts analog inputs into groups of binary coded control outputs

• Mailbox: Converts analog outputs into analog inputs so they can be read by all masters

Additional Applications

• AGA Gas Flow: Computes gas flow rate and energy flow rate calculations

Hardware Overview

D20 Chassis (Single-Slot, Non-VME)

D20 Chassis (Multiple-Slot, VME)

• Up to 2 D.20 ports, each supporting up to 31 I/O peripherals without repeaters, and 120 I/O peripherals with repeaters.

• Up to 21 RS-232 or RS-485 ports (7 per processor board)

• 2 Ethernet channels

D200 Chassis (Multiple-Slot, VME)

• 4 D.20 ports, each supporting up to 31 I/O peripherals without repeaters, and 120 I/O peripherals with repeaters

• Up to 49 RS-232 or RS-485 ports (7 per D20ME or D20ME II Main Processor)

• 2 Ethernet channels

• Optional redundant configuration for high reliability at critical sites

Configuration and Maintenance

ConfigPro

SGConfig

• Importing and exporting XML representation of D2x devices

• D25 KT control card support

• D25 Ethernet 100/10 MB card support

• Secure configuration transfer to/from D20 devices with D20MX processors over Ethernet connections

Specifications and Supported Standards

Mechanical & Environmental

Safety

Emissions

Immunity

D20/D200 Main Processor Specifications

Supported Protocols

Host Protocols (Sampling)

• ABB® Inductive 33/41, 35

• Conitel C3000, C0200, C2020, C2025, C2100, C2100M

• DNP 3 (Serial, TCP/IP, UDP/IP)

• IEC® 60870-5-101, IEC® 60870-5-104

• Modbus® (Serial)

• PG&E® (Rev. 11)

• Siemens® Sinaut® 8FW-1024, 8FW-512

• Telegyr® TG809

• UCA™ 2.0

• Westinghouse® REDAC 70H, WESDAC 4F, WISP+

IED Protocols

• Protection Relays

• Power Meters

• Digital Fault Recorders

• Power Quality Monitors

• Capacitor Bank Controllers

• Load Tap Changer (LTC) Controllers

• PLCs

Ordering Information

• D20 Single CPU (Non-VME): Single-slot chassis with one processor

• D20 VME Multi-Node Gateway: Multiple-slot VME chassis with up to 2 processors

• D200 Multi-Processor Gateway: 9-slot VME chassis with up to 4 processors

Why Choose the Multilin D20/D200?