GE WESDAC D20ME Substation Automation Controller Module

GE WESDAC D20ME is the main processor module of the GE D20/D200 substation automation system. It is a VME bus based remote terminal unit (RTU) controller, running real-time firmware to perform data acquisition, protocol conversion, event processing and substation control functions for power automation applications.

This module is installed in the D200 rack chassis and communicates with field IED devices through D.20 Link ports and serial interfaces. It serves as core spare parts for power grid substation SCADA, data concentration and control system maintenance, renovation and expansion projects.

Main Specifications

1. Brand: GE (WESDAC); Model: D20ME; Series: D20/D200; Type: VME Substation Controller Module
2. Architecture: VME bus processor; Installed in D200 rack chassis
3. Communication: Multiple D.20 Link ports, RS232/RS485 serial interfaces
4. Function: Data acquisition, protocol conversion, event and alarm processing, local control
5. Power supply: 24/48VDC from rack backplane; Operating Temp: -25℃ ~ +70℃
6. Software: WESDAC configuration and monitoring tools; Rack mounting
7. Supply Status: Industrial spare module for maintenance of legacy substation automation systems

Core Functions

1. Acquire real-time status and measurement data from field IED devices and protection relays.
2. Perform protocol conversion to exchange data with master station SCADA systems.
3. Process events, alarms and commands, and execute local control and interlocking logic.
4. Store and time-stamp event data for fault analysis and sequence-of-events recording.
5. Communicate with other D20 modules via D.20 Link for distributed node configuration.
6. Standard rack installation, convenient disassembly and replacement during substation overhaul.

Application Scenarios

1. Electric power substation SCADA and remote terminal unit (RTU) control systems.
2. Power plant auxiliary control, protocol gateway and data concentration applications.
3. Replacement of faulty processor modules for existing GE D20 substation automation platforms.
4. Spare parts stocking for power automation maintenance teams of power grid companies.
5. Retrofit and expansion of old substation monitoring and control systems.
6. Multi-node distributed power monitoring system construction for large power stations.

FAQ

1. Q: What is GE WESDAC D20ME used for?
   A: It is the main processor module of GE D20 substation RTU system, responsible for data acquisition, protocol conversion and substation control in power automation.
2. Q: Where is D20ME installed?
   A: It is rack-mounted inside the D200 VME chassis and communicates with field devices through D.20 Link ports.
3. Q: What system is D20ME compatible with?
   A: It belongs to GE WESDAC D20/D200 substation automation platform, applied for SCADA and power data concentration.