Advanced Distribution AUtomation Controller
The Multilin DGCR is an advanced Controller for detection of faults and controlling overhead reclosers. The Multilin DGCR is compatible with many traditional and magnetic actuator reclosers and provides a great degree of flexibility in integrating with FDIR systems.
A key driver and measurement of utility effectiveness is in the reliability of power to its customers. As many faults on overhead distribution lines are transient in nature, reclosing at the substation and installation of mid-line reclosers./switches can improve a utilities SAIDI reliability index by up to 24%.
When permanent faults occur on overhead lines, having feeders with increasing degrees or automation can greatly enhance distribution grid reliability and reduce restoration of unfaulted segments from several hours to a few seconds or minutes. A key component of these automation schemes is intelligent controllers that can integrate with FDIR systems through sharing local information and accepting control commands.
Based on GE's proven controller platform with tens of thousands of units installed globally, the Multilin DGCR undergoes extensive Accelerated Life Testing (ALT) and Highly Accelerated Life Testing (HALT) to validate accurate functionality under specified conditions and to ensure accurate performance in extreme operating conditions and harsh environments.
Modes of Operation
The Multilin DGCR Recloser controller provides two modes of operation:
The Multilin DGCR recloser controller measures three phase voltages and currents, and based on the measurements, manages Auto-Recloser functionality:
Typical Application of Distribution Automation solutions
(Centralied Volt/VAR control (CVVC) & Fault Detection, Isolation & Restoration(FDIR))
Automation & Control
The Multilin DGCR offers powerful I/O and programmable logic (FlexLogic™) options for advanced automation and control, reducing the need and costs associated with additional programmable controllers or discrete control devices.
For both operational efficiency and reliability reasons, the Multilin DGCR provides remote control for operating switchgear. The Multilin DGCR is capable of providing both local and manual control of the switchgear.
Set Point Group Control
The Multilin DGCR has three identical set point groups. The activation of the group can be done either from the HMI or via a digital input.
Virtual Inputs and Outputs
The Multilin DGCR provides 32 virtual inputs and 32 virtual outputs that provide users with the ability to send commands to the device. The Multilin DGCR can accept commands from SCADA, through the front HMI, or front USB port to issue commands such as close or open.
The Multilin DGCR has the ability to force commands from the menu structure. This can also be achieved via the EnerVista™ software that runs on a PC. This simulation ensures that the close and open commands can be safely issued from a distance without using the HMI.
FlexLogic in the Multilin DGCR provides the ability to create customized control schemes. This minimizes the need and costs associated with auxiliary components and wiring.
Metering & Monitoring
The Multilin DGCR provides high accuracy metering and recording of all AC signals, measuring the following key parameters:
These data points can be easily integrated into a customer's database for seamless viewing through a SCADA or DMS system like GE's PowerOn or GeNe.
Statistics & Counters
The maintenance elements in the Multilin DGCR provides alarms to the system based on the maximum number of closing/opening executed commands per period of time and I²t measurements per feeder.
The Multilin DGCR provides an integrated event recorder and detailed diagnostic features. The sequence of events recorder offers the following features:
Advanced Device Health Diagnostics
Comprehensive device health diagnostic tests are performed by the Multilin DGCR during startup and continuously at runtime to test its own major functions and critical hardware User Interface.
The DGCR and associated software tools provide a suite of security features that ensure only approved personnel can make changes to the device configuration or execute operational commands.
The DGCR offers multiple levels of password security to limit access control based on settings or command levels. There are four levels of password security provided:
Local Access refers to users making changes using the front USB serial port and the HMI. Remote Access refers to users making changes using the rear RS485 port.
The EnerVista™ Suite is an industry-leading set of software programs that simplifies every aspect of using the DGCR Voltage Regulator Conroller. The EnerVista™ suite provides all the tools to monitor the status of the protected asset, maintain the controller, and integrate information measured by the DGCR into SCADA or the DMS monitoring systems. The ability to easily view sequence of events is an integral part of the setup software, as postmortem event analysis is critical to proper system operation. Learn More