IntelliTeam^® SG Automatic Restoration System

IntelliTeam SG Automatic Restoration System automatically reconfigures the distribution system after a fault and quickly restores service to segments of the feeder which aren’t affected by the fault. Although fully compatible with SCADA, no SCADA control or central monitoring is required. Decisions are made locally, based on real-time loading data. IntelliTeam SG supports complex systems of virtually any size and accommodates tie points from multiple sources. It can handle as many teams of switches as line loading will allow.

IntelliTeam SG offers such important features as:

• IntelliTeam® Designer. Simplifies system configuration. Propagates settings to all team members.
• Rapid Self-Healing. Isolates faulted section and restores service to non-faulted sections in seconds.
• Post-Restoration Load Management. Protects reconfigured system from loading exceeding the capabilities of the system.
• Site Automation Testing. Lets you emulate events using actual site parameters and peer-to-peer communication and — optionally — operate switches.
• “New Normal.” Lets you accept the present circuit configuration as the permanent normal configuration.
• No limit on the number of controls.
• Works on radial or looped circuits, or a combination of both.
• Scalable from simple circuits to full distribution systems with minimal effort.
• Restoration capacity is based on real-time loading, so circuits can handle higher loads.
• Programmed-in logic. Just configure the settings.
• Full SCADA support, including override of automatic functions by the master station.
• Immune to single-point communication failures.
• Multiple blocking points. Prevent automatic operation when crews are working.
• Automatically returns to normal upon return of voltage.

IntelliTeam SG is easy to set up and apply. S&C can help you quickly get up to speed in deploying IntelliTeam SG on your system. Or our experts can handle the deployment for you. Either way, IntelliTeam SG ensures that you’ll get the most CMI reduction for the money and optimal performance from your system.

IntelliTeam SG uses advanced controls, network communication, and distributed intelligence to quickly isolate a fault and then restore service to the maximum-possible amount of load.

The unique logic of IntelliTeam is built-in. It’s been extensively tested and can be applied with full confidence. IntelliTeam SG was specifically designed to meet the needs of line crews and operating personnel. S&C’s chief software architect for IntelliTeam SG began his career as a journeyman lineman for a major investor-owned utility . . . and fully understands the requirements for safety and control over the work environment. All automatic operations of IntelliTeam SG can be prevented when operating personnel are working on the line.

A Building Block Approach

The basic building block of IntelliTeam SG is a “team” — a line segment bounded by up to eight automatically controlled switching/fault-interrupting devices. Information on currents, voltages, loading data, etc. is transferred between teams. IntelliTeam SG ensures that the system is not overloaded in the process of circuit restoration. IntelliTeam SG can automate systems of virtually any size, within the constraints of circuit loading.

Configuring the System

IntelliTeam SG monitors real-time voltages and currents using sensors integrated into the switching/fault-interrupting devices. Each device is configured to know its normal role in the system, its name (DNP address), and other key settings such as:

• Maximum Capacity — the amount of load the device is permitted to carry
• Normal Switch Function — the role of the device within the team
• Source Priority — the favored source of the team (if applicable) when all other factors are equal

SCADA

Although IntelliTeam SG does not require a SCADA master station to function, it fully supports master control. You can use SCADA to control when IntelliTeam SG is active and when it’s not. The flow of team information back to the master station provides a wealth of information that can be used by engineering, planning, and operations personnel to enhance system performance.

Fault Isolation

Using the voltages and currents measured at the switching/fault-interrupting devices — along with the configuration settings — IntelliTeam SG will identify the location of a fault anywhere in the system. The fault will be automatically isolated to the one affected team by opening the switching/fault-interrupting devices in conjunction with the source-side protective devices.

Restoration

Once the fault has been isolated, IntelliTeam SG will seek out all possible power sources, to restore service to as many teams as possible, as quickly as possible. IntelliTeam SG can manage virtually any number of alternate sources and loads.

Before closing a switching/fault-interrupting device to restore service, the system automatically verifies that the alternate source will not be overloaded, by adding the pre-fault load of the de-energized segment to the present real-time load of the alternate source. Restoration is typically completed in seconds.

Return to Normal

After the cause of the fault has been remedied and any damage repaired — and the SCADA dispatcher or field personnel has closed the open-source switching/fault-interrupting device of the faulted section — IntelliTeam SG signals the teams to return the circuit to its normal configuration. Either open or closed transition return may be selected.

IntelliTeam SG works with S&C overhead and underground switching and protection equipment including:

• IntelliRupter^® PulseCloser,
• Scada-Mate^® Switches and Scada-Mate CX™ Switches,
• Remote Supervisory PMH Pad-Mounted Gear and Remote Supervisory PME Pad-Mounted Gear, and
• Remote Supervisory Vista^® Underground Distribution Switchgear.

But IntelliTeam SG isn’t limited to use with S&C products. With S&C’s IntelliNode Interface Module, IntelliTeam SG interoperability extends to a wide array of new and existing DNP 3.0-compatible intelligent electronic devices applied with conventional reclosers and switching devices of other manufacture, including:

• SEL 351-R1, 351-R2, and 351-S Overcurrent Relays,
• Nu-Lec CAPM-5 Recloser Controls,
• Cooper Form 6 Recloser Controls,
• GE F60 Feeder Management Relays, and
• ABB Ref 550 Protection Relays.

IntelliTeam^® SG Demonstration

The IntelliTeam SG Online Demonstration is an interactive re-enactment of IntelliTeam SG derived from real fault scenarios run on the S&C IntelliTeam SG Test System, using actual automatic switch controls and communication devices. It shows the power of IntelliTeam SG.

The distribution system used in the demo is comprised of four circuits: A, B, C and D, each of which is fed from a separate substation. The circuits could alternately be fed from different bus sections of the same substation, or another utility source. Each circuit is divided into a number of teams, in a variety of configurations. All of the switches in the demo are overhead, but underground switching equipment can also be used.

The user can select a fault scenario and observe each step of the reconfiguration process. Four scenarios are available:

• Scenario 1 - Loss of Source
• Scenario 2 - Faulted Circuit
• Scenario 3 - Faulted End Load
• Scenario 4 - Multiple Faults

Circuit loading conditions have been simplified to make the math easy if you’d like to check switch loading at each step of the way.

IntelliTeam II can be configured to return to normal either in open or closed transition. The demo uses closed transition.

The demo uses the following symbols:

		Open Switch
		Closed Switch
		De-energized Circuit Segment
		Energized Circuit Segment (colored lines) Circuit segments will change color to match the substation from which they are being fed.
		Fault — a fault applied to the system. The symbol will change in intensity depending on the fault status, but will remain visible throughout the demo to show the fault location.
		Switch Label — the identification number of a switch.
		Teams — each team is identified by a “Team _” callout. Teams can and do overlap.
		Event Time — duration of the event.
		Elapsed Time — total time the system runs from the inception of the scenario.

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