S&C IntelliRupter PulseCloser. Outdoor Distribution 14.4 kv and 25 kv

Transcription

1 S&C IntelliRupter PulseCloser Outdoor Distribution 14.4 kv and 25 kv Descriptive Bulletin February 7, 2006 New Publication 2006

2 IntelliRupter PulseCloser Tomorrow s Technology Available Now S&C s IntelliRupter PulseCloser is a breakthrough in overhead distribution system protection. Using S&C s revolutionary PulseClosing Technology, IntelliRupter finds and isolates faults without the disruptive effects associated with conventional reclosing reducing stress on your system and improving power quality. Embedded three-phase voltage and current sensors eliminate the cost, clutter, and complexity of separately mounted sensors. Since IntelliRupter is line-powered, external transformers are unnecessary. All system components are contained in the IntelliRupter base for easy, one-lift installation. IntelliRupter addresses a variety of application needs. It can be applied as a standalone fault interrupter... It can be applied in non-communicating loop restoration schemes... Or it can be applied in advanced multiplesource distribution systems. A wide range of communication options lets IntelliRupter interface with any SCADA system. And S&C SpeedNet Radios offer the speed and bandwidth required for S&C s innovative IntelliTEAM III Automatic Protection and Restoration System, which provides fully coordinated protection regardless of the number of line segments or complexity of circuit ties. IntelliRupter provides outstanding protection for 60- Hz distribution systems from kv through 27 kv, and 50-Hz systems from 10 kv through 24 kv. It has a generous continuous-current rating of 800 amperes and a fault-interrupting rating of 12,500 amperes symmetrical. Models are available accommodating most overhead line configurations, with or without an integrated, interlocked disconnect for visible air-gap isolation. All switching is performed internally, for reliable all-weather operation. Fault Testing With a PULSE... Instead of a BANG! Conventional reclosers stress the circuit with fault current every time they reclose on a fault. In contrast, after interrupting a fault, IntelliRupter injects a non-disruptive current pulse into the line. The oscillograms in Figure 1 show the remarkable difference in fault testing of a line with a conventional recloser and S&C s revolutionary IntelliRupter. IntelliRupter PulseCloser detects faults with less than 2% of the total let-through ampere 2 -seconds of conventional reclosers, as shown in Figure 2. Fault Testing The Old Way After a conventional recloser clears a fault, it simply closes the interrupters to test for continued presence of the fault. If the recloser relay still detects the fault, the interrupters trip again, then after a time delay the interrupters close again. Even the fastest reclosers feed a significant amount of energy into the fault, resulting in system-damaging stress and voltage sags. Figure 3 shows a conventional recloser operation for a permanent single-phase-to-ground fault. Note that the uncontrolled closing of a conventional recloser often results in asymmetric fault currents which significantly increase energy into the fault. And the threephase reclosing sequence also applies voltage to the unfaulted phase(s) that many customers downstream of the recloser see as a surge... often causing complaints and expensive claims. Current versus Time Conventional Reclosing Fault from Phase Wire to Grounded Neutral Current versus Time PulseCloser Fault from Phase Wire to Grounded Neutral Figure 1. PulseClosing Technology tests for faults with a non-disruptive 5-millisecond current pulse. 2

3 4,000,000 CONVENTIONAL RECLOSING ampere 2 seconds 3,000,000 2,000,000 1,000,000 0 PULSECLOSING Figure 3. Conventional reclosing permanent fault. Figure 2. Relative let-through energy for a typical 8-kA fault. Pulse Fault Testing The PulseClosing Way After IntelliRupter clears a fault, it tests for continued presence of the fault using S&C s advanced magnetic actuator design coupled with unique PulseClosing Technology to intelligently close at a precise point on the voltage wave. The result is a typical current pulse of 5 milliseconds, as shown in Figure 4. With IntelliRupter, your transformers, connectors, lines, and cables experience overcurrent stress only from the initial fault not from every reclosing operation. Component life is extended, eliminating costly premature replacement. One of the main causes of premature aging of substation transformers is cumulative damage from through-faults. PulseClosing dramatically reduces through-faults, extending the life of one of your highest-value assets! And power quality is improved too... PulseClosing doesn t disturb source-side customers with voltage sags and blinks, thus reducing costly complaints! System Integration Optimizes Performance All IntelliRupter components are factory-assembled on a single base. No field assembly or external cabling is required. The unified system is factory-tested to confirm current- and voltage-sensing tolerances, and assure consistently fast and accurate interrupter operation. Because performance is so accurate and predictable, more IntelliRupters can be coordinated in series than is possible with conventional reclosers. The coordinating time interval between IntelliRupters can be less than half the smallest-typical CTI needed for conventional reclosers. Figure 4. PulseClosing Technology permanent fault. SpeedNet Radios Enhance Peer-to-Peer Network Communication IntelliRupter can be furnished with S&C s unique SpeedNet Radio, which provides a wealth of automation and ease-of-use features unavailable with conventional radios. Transmissions from an IntelliRupter to its teammates take less than 100 milliseconds, including two repeater hops making communication-enhanced coordination a practical reality. SpeedNet Radios comprise a network-aware system. All units are fully addressable, so high-speed, peerto-peer communication is possible between multiple IntelliRupters in a team not just between single pairs. IntelliRupter PulseClosers equipped with SpeedNet Radios make possible the next major advancement in distribution automation: IntelliTEAM III. 3

4 Introducing the IntelliTEAM III Automatic Restoration System IntelliTEAM III builds on the field-proven IntelliTEAM II Automatic Restoration System with exclusive new features that significantly enhance reliability and let you get the most out of your existing distribution system. IntelliTEAM III takes advantage of a unique combination of interrupter speed, sensing and control accuracy, and rapid communication to ensure virtually perfect coordination no matter how many IntelliRupters are in series or the complexity of the circuit. Advanced Adaptive Protection Typical distribution system circuit design is severely constrained because only a few protective devices can be coordinated in series. And protective devices and their settings must be very carefully selected to ensure the system remains coordinated after circuit reconfiguration. Furthermore, the use of more than one or two alternate sources is impractical because coordination planning becomes extremely complex. But IntelliTEAM III s exclusive Advanced Adaptive Protection feature automatically updates IntelliRupter time-overcurrent settings whenever the circuit is reconfigured. And it can adjust for multiple alternate sources. Utility planners and engineers are no longer constrained by trying to manually protect a dynamic system, and can instead focus on optimizing distribution system design to meet increasing customer requirements... now and into the future. Automatic Protection Setup With IntelliTEAM III, selection of IntelliRupter protection settings can be performed automatically. Just enter data for the substation breaker and the slowest protective device to be coordinated. S&C s advanced Precision Curve Fitting algorithm automatically develops a protection curve that fits tightly against the breaker s minimum response curve and above the maximum clearing curves of downstream protective devices. IntelliRupters communicate with each other to do the rest. IntelliRupter protection curves are set to optimize protection, allowing more series devices to be time-current coordinated than otherwise possible. Automatic Protection Setup enhances system coordination and saves time for the protection engineer. Communication-Enhanced Coordination IntelliRupters also provide communication-enhanced coordination, using the ultra-fast SpeedNet Radio system. There s no sacrifice in overall protection coordination even when circuit reconfiguration puts many IntelliRupters in series. Benefits of IntelliTEAM III: With IntelliTEAM III, you ll realize a number of important benefits: No matter how complex the reconfigured system, all IntelliRupters remain coordinated. With more segmentation, fewer customers are affected by a service interruption to a given segment, enhancing reliability and customer satisfaction. Unreliable system segments can be readily isolated, enhancing reliability of the rest of the system. Critical customers or clusters of customers can be grouped to deliver very-high-reliability service. System assets can be better used, deferring capital expenditures. IntelliRupter is Fully Compatible with Existing IntelliTEAM II Automatic Restoration Systems Too IntelliRupters can provide IntelliTEAM II functionality when installed in distribution systems comprised of S&C switching devices such as Scada-Mate Switches, Automated Omni-Rupter Switches, Remote Supervisory Pad-Mounted Gear, and Remote Supervisory Vista Switchgear. IntelliRupter puts fault protection and PulseClosing Technology on the line to minimize momentary interruptions. IntelliTEAM II provides automatic service restoration once IntelliRupter has isolated a fault. This powerful combination makes full use of multiple sources to restore unfaulted line segments under multiple contingencies, minimizes the number of customers experiencing an extended power interruption, and tremendously improves your System Average Interruption Duration Index. There s no need to modify your existing 5800 Series Automatic Switch Controls using IntelliTEAM II Software Version 2.39, or higher, to accommodate IntelliRupters, or change an existing UtiliNet WanGate Radio system. Enhanced Loop Restoration IntelliRupter can significantly enhance the performance of a conventional recloser loop restoration scheme by eliminating the need to subject the alternate circuit in the loop to a fault when closing the tie. Just apply an IntelliRupter in the tie position to take advantage of PulseClosing Technology! Even greater benefits can be achieved in loop schemes where all protection points utilize an IntelliRupter. Its fast interrupters and accurate sensing and control enable significant reductions in protection margins. Combined 4

5 Hotline tag lever Integrated sensor Hookstick-removable integrated control unit and power module Vacuum interrupter Surge arrestor Antenna Open/close lever Open/close e indicator Integrated power module Figure 5. All components are mounted to the IntelliRupter base for one-lift mounting and easy installation. with PulseClosing s negligible effect on source-side customers, the system can be segmented as needed without sacrificing protection. With IntelliRupter protecting the loop, customers will appreciate not experiencing sags on their good circuit during testing of a faulted circuit! Complaints and costly claims will be greatly reduced. Radial Circuit Protection On a radial circuit using IntelliRupters, the control units can be configured so that when an IntelliRupter opens to isolate a fault, those downstream of it open on loss of power and send SCADA exception reports indicating status and the reason for opening. When power returns, each IntelliRupter uses PulseClosing Technology to verify that its line segment is unfaulted, then recloses to restore service; it will never close into a fault. Cold-load inrush is mitigated because only one line segment is energized with each reclose. No communication system is required to take advantage of inrush mitigation. Easy Up Easy On As shown in Figure 5, IntelliRupter is totally self-contained, complete with sensors, integrated control unit, and power module. Surge arresters, as well as the integrated disconnect on models so equipped, are also mounted to the base... so IntelliRupter can be installed in one lift. Configuration can be performed either before installation or after the IntelliRupter has been mounted on the utility pole, using a laptop PC with wireless network capability. Simply establish the secure WiFi connection, enter your password, and you re ready to go. A memory module, installed in the base, backs up configuration data and site-specific information such as the device identifier, sensor calibration data, and operation counter reading. The modular control unit can be removed with a hookstick, so replacement is easy... the new control unit is automatically configured by the memory module when it s inserted into the base. See Figure 6. The radio and battery (required in certain applications) are also modular and hookstick-removable, so the very minimal maintenance required for IntelliRupters can be performed by a line person without assistance from a SCADA technician. 5

6 An integrated Global Positioning System receiver provides precision time synchronization, allowing event logs from your IntelliRupters to be easily matched for accurate system analysis. The GPS receiver also provides accurate geographic information to help you maintain your utility s Graphical Information System. In control units equipped with a SpeedNet Radio, all system operation checks, diagnostics, downloads of logs and oscillography data, and even uploads of new system software can be accomplished over the radio all but eliminating costly field visits to the IntelliRupter after it has been installed. Figure 6. Hookstick-removable integrated control unit and radio modules. They re designed for line-technician-friendly handling, to greatly simplify replacement should it ever be necessary. The memory module makes control replacement truly plug-n-play no need to reconfigure... just wait for the status light to flash and go! Easy Operation Should local operation be required, the secure WiFi connection gives laptop-computer-equipped personnel safe and easy access to the integrated control unit for all operational tasks from simple open/close operation, to setting hot-line tags, to changing protection profiles. The secure WiFi connection is used for software upgrades as well. Detailed logs, oscillography data, and other operational information can be accessed and transferred quickly and easily over the WiFi link. If a laptop PC is not available, IntelliRupter can be opened and closed and hot-line tags set using a hookstick, operated from the ground or a bucket truck. Easy Configuration S&C s completely revamped IntelliLINK Remote Setup Software has many new features that make configuration even easier. New navigation buttons dramatically speed access to configuration parameters. A new graphical operations screen allows local operation of IntelliRupter via the WiFi link. Phase arrangement is clearly indicated. Many operation- and status-related labels can be userconfigured to conform to your utility s designations, for clarity. The integrated WiFi connection screen ensures secure communication to the correct IntelliRupter, every time! And only IntelliLINK detects the WiFi signature of an IntelliRupter providing an extra layer of access security. 6

7 Upright-Compact Disconnect Style Upright-Compact Non-Disconnect Style A Style to Meet YOUR Needs! IntelliRupter comes in a style to fit your line configuration. Upright- Compact models are ideal for congested spaces or when replacing a conventional recloser. Upright-Crossarm models fit typical open-wire line spacing and provide a clean, uncluttered appearance on the pole. And for phase-over-phase lines, Tiered-Outboard models are a perfect fit... no need to roll the construction to fit the IntelliRupter! Since everything required is integrated in one package, installation takes a fraction of the time of separate reclosers, sensors, power transformers, disconnects, lightning arresters, controls, and control cables. Upright-Crossarm Disconnect Style Tiered-Outboard Disconnect Style IntelliRupter is also available in Upright-Crossarm and Tiered-Outboard Non-Disconnect Styles. 7

8 IntelliRupter Construction Integrated voltage and current sensors molded into interrupter housings. Voltage sensors on both sides of IntelliRupter provide highly accurate sensing across the entire temperature range. Current sensors provide extremely flat response, from low-level load currents through fault current levels, ensuring reliable measurements critical for system analysis Integrated disconnect on Disconnect Style models provides visible air gap. Operable with a hookstick, from a bucket or the ground. Disconnect is mechanically interlocked with the interrupters; an auxiliary switch allows remote indication of disconnect position. Visible air gap provides isolation for dead-line work, as well as facilitates operational testing. IntelliRupter can be fully operated with the disconnect open without disrupting customers when power can be routed to both sides of IntelliRupter independently Optional factoryinstalled and wired surge arresters on both sides of IntelliRupter. Simplifies installation Integrated control unit. See Figure 6 Stainless-steel base is coated with S&C s patented Ultradur Finishing System for outstanding corrosion resistance, even in the harshest environments. Provides long-lasting, attractive, non-glare finish and a touch of aesthetic appeal Integrated power module fed from one side of IntelliRupter or, optionally, both sides to maximize availability of control power. Eliminates cost and complexity of separately mounted control power transformers Integrated pole-mounting bracket is designed for easy installation; prevents IntelliRupter from tilting Tight integration of sensors and control unit with virtually no interconnecting wiring ensures outstanding system accuracy of ±2% across the entire temperature range. And with the memory module, the sensors and control are factorycalibrated. There s no need to enter and maintain calibration values, even in the unlikely event the control unit needs to be replaced The Cypoxy advantage: Long-life vacuum interrupters are potted in a one-piece Cypoxy housing to ensure proper thermal characteristics and reliable, trouble-free operation. Integrated power module is encapsulated in Cypoxy too. Cypoxy is a uniquely formulated cycloaliphatic epoxy resin especially tailored to provide exceptional electricaland mechanical-strength characteristics 8

9 IntelliRupter Features to Meet Your Operational Requirements IntelliRupter comes with a wealth of features to meet the needs of the most demanding line technician for ease of installation, access, and use. Open/close lever for manual opening and electrical closing of IntelliRupter Hotline tag operator lever for hookstick setting and releasing of tags for energized line work. Open/close indicator for each phase of IntelliRupter. It s large and utilizes reflective materials for easy viewing day or night. And, it s attached directly to the operating rod no complicated linkages to break. Optional wildlife protection available on Upright-Crossarm and Upright-Compact Styles reduces wildlife-related nuisance outages. It s pre-assembled to simplify installation; there are no small fasteners to lose Blade cover Tap cover Phase-to-ground barrier 9

10 Maximize the Benefits of IntelliRupter and IntelliTEAM III IntelliRupter and IntelliTEAM III will completely change the way you think about designing distribution systems for reliability and optimum functionality. But understanding how to make the most of these new tools can take some time. S&C s team of automation, system planning, and engineering experts can help you get up to speed quickly avoiding the time-consuming learning curve that might otherwise be required. They have extensive experience helping customers apply S&C s automation tools. Working closely with the IntelliRupter / IntelliTEAM III development team, they ve developed approaches for fully integrating distribution automation in even the most complex circuit configurations, ensuring your system works right the first time. Our experts can help you apply IntelliRupter and IntelliTEAM III to: Improve reliability Defer capital expenditures Reduce costs and headcount, and Manage aging assets. Key considerations in the evaluation process include: Analysis of cost/benefit Review of load levels and transfer capacity S&C can also provide critical engineering and field service expertise to ensure successful implementation of your distribution automation solution, including: Engineering Services Coordination studies to evaluate protection settings End-to-end communication system design to make sure your system works right at the outset and over the long run, and Testing on S&C s IntelliTEAM III system simulator to ensure that the automation design performs as expected. Determination of critical customer needs Determination of geographic concerns, and Determination of reliability impacts. Field Services Communication surveys SCADA integration Commissioning, and Training. 10

11 Turnkey Installation Services Project management and Construction management. And S&C can provide services to monitor the health and evaluate the performance of your IntelliRupters and IntelliTEAM III system after commissioning, including: System inspection and data collection Remote monitoring for system health reports System event evaluation System communication evaluation, and Post-installation benefit analysis. No other supplier offers the latest in distribution automation technology plus assistance in applying and implementing this technology so you ll realize the maximum return on your investment. Contact your local S&C Sales Office today for more information. 11

12 Ratings INTELLIRUPTER PULSECLOSER 60-Hz Applications Ratings kv1 Amperes, RMS Minimum Maximum BIL Cont.2 Interr. (Sym) / / Minimum and maximum ratings assure adequate power from the power module amperes with a minimum wind velocity of 2 ft/sec. INTELLIRUPTER PULSECLOSER 50-Hz Applications Ratings kv1 Amperes, RMS Minimum Maximum BIL Cont.2 Interr. (Sym) / / Minimum and maximum ratings assure adequate power from the power module amperes with a minimum wind velocity of 2 ft/sec. Printed in U.S.A. S&C ELECTRIC COMPANY Specialists in Electric Power Switching and Protection Offices Worldwide Telephone: (773) Fax: (773)