Paralleling Topologies And Uptime Institute Tier Ratings

Transcript

PowerHour webinar series for consulting engineers Experts you trust. Excellence you count on. Paralleling Topologies and Uptime Institute Tier Ratings Thursday July 28, 2016 11:00 PDT / 2:00 EDT (1PDH issued by Cummins) Welcome! PowerHour is designed to help our engineer partners to…  Keep up to date on products, technology, and codes and standards development  Interact with Cummins experts and gain access to ongoing technical support  Participate at your convenience, live or on-demand  Earn PDH Technical tips:  Audio is available through teleconference, or your computer (don’t forget to unmute)  You are in “listen only” mode throughout the event  Use the WebEx Q&A Panel to submit questions, comments, and feedback throughout the event. We will provide sufficient Q&A time after presentation  If you lose audio, get disconnected, or experience a poor connection, please disconnect and reconnect  Report technical issues using the WebEx Q&A Panel, or email [email protected] PowerHour Experts you trust. Excellence you count on. Meet your panelists Cummins presenters: Mike Sanford Cody Albertus Group Leader, North America and Caribbean Application Engineering Product Management Leader, Mission Critical Segment Cummins facilitator: Tom Bakritzes, Global Sales Training Manager Your local Cummins contacts:  AZ, ID, NM, NV: Carl Knapp, Cummins Sales and Service, Rocky Mountain Region  CO, MT, ND, UT, WY: Joe Pekarek, Cummins Sales and Service, Rocky Mountain Region  IL, MN, WI: John Kilinskis, Cummins Sales and Service, Central Region  TX: Scott Thomas, Cummins Sales and Service, Gulf Region  FL, GA, NC: Robert Kelly, Cummins Sales and Service, South Region  IN, KY, OH, TN, WV: Tom Stadulis, Cummins Sales and Service, East Region PowerHour Experts you trust. Excellence you count on. 3 Course Objectives Participants will be able to:  Identify common paralleling topologies, plus their advantages and disadvantages, so they can make informed choices in paralleling system design.  Recognize effects of system topology on maintainability and scalability so they can consider these factors in system design.  Describe Uptime Institute Tier Ratings and their implications on generator sets and power distribution systems. PowerHour Experts you trust. Excellence you count on. Overview  Common Paralleling Topologies  Uptime Institute Tier Ratings  Generator Set Features for Data Centers PowerHour Experts you trust. Excellence you count on. Common Paralleling Topologies PowerHour Experts you trust. Excellence you count on. Common Topologies  Isolated Bus  Isolated Bus with Gen main  Common Bus  Transfer Pair  Main Tie Main  Multiple Transfer Pair  System Design Strategies PowerHour Experts you trust. Excellence you count on. Isolated Bus 12470 V G 480 V G G 1200 (TYP 3) 4000 G G G XXX XXX XXX ATS LOADS  Simplest, most common topology  No connection with utility  Power Interruptions on re-transfer LOAD 1 ATS LOAD 2  Load control required to make sure that sufficient capacity is on line before connecting loads  Each generator set must be large enough to carry emergency loads – Need to be on line in 10 seconds (NFPA 110) PowerHour Experts you trust. Excellence you count on. Isolated Bus with Gen Main  Minimum generator sets online before connecting critical load  Common topology for prime power PowerHour G G XXX Experts you trust. Excellence you count on. G XXX XXX Common Bus  Low cost  Can do open & ramping closed transition transfer  Can’t guarantee 100msec max parallel time  Service Problem: G G 12470 V 2000 (TYP 3) 480 V 4000 – Bus maintenance causes interruption in service to loads – Loads can not be isolated from gen bus PowerHour G Experts you trust. Excellence you count on. Transfer Pair  Allows for bumpless retransfer and test with load functions  Good for maintenance as generator source can be isolated from loads and tested G G 12470 V 2000 (TYP 3) 480 V 4000 4000 PowerHour G Experts you trust. Excellence you count on. Main Tie Main U1 U2 12470 V 12470 V 480 V 480 V G G G G 3000 3000 1600 (TYP 3) NO  Tie is normally open  Similar to two Common Bus designs – Similar serviceability issues PowerHour Experts you trust. Excellence you count on. Multiple Transfer Pair G G G 12470 V 12470 V 1600 (TYP 3) 480 V 480 V 3000 3000 3000 3000  Has better serviceability than Main Tie Main  System operates like two transfer pairs  Gens can parallel with either utility but not both – On closed transition transfer gens sync with one utility at a time PowerHour Experts you trust. Excellence you count on. Modular Design - Scalability G G G G G G G G G G G G Manual ties for catastrophic failures Example:  Three modules on site, installed in 2008, 2010, 2012 – Long term plan is to add a fourth module  Each module is sized for 25 MW – Running at about ½ capacity PowerHour Experts you trust. Excellence you count on. Maintenance Bypass G G G G Bypass section allows maintenance without interruption 12.74 kV/4160 Vac 4160/480 Vac 4160/480 Vac 4160/480 Vac Maintenance Bypass and Load Bank Load Bank PowerHour Experts you trust. Excellence you count on. Can load bank generator sets without interruption Swing Bus PowerHour Experts you trust. Excellence you count on. Uptime Institute Tier Ratings PowerHour Experts you trust. Excellence you count on. Tier Level Ratings  The tier rating system is the industry standard for benchmarking data center reliability.  Four tiers, each building on requirement to the one below (ex. Tier II requires all of Tier I capability, plus the added requirements).  Power Generation and distribution is one of 16 subsystems evaluated.  No fractional tier ratings.  Tiers do not specify certain equipment, but rather a level of redundancy and security to maximize run time.  To be an enterprise class data center, UPS and generator sets are required equipment.  Significant costs associated with higher tier rating. PowerHour Experts you trust. Excellence you count on. Uptime Institute Tier Ratings Tier I Tier II Tier III Tier IV Basic Redundant Capacity Concurrently Maintainable Fault Tolerant Capacity N N +1 N +1 2N (N after any failure) Distribution Paths 1 1 1 Active, 1 Alternate 2 Simultaneously Active Fault Tolerant No No No Yes Standby Genset Isolated Bus Dual Transfer Pair Dual Transfer Pair Description Typical Topology PowerHour Experts you trust. Excellence you count on. Tier I - Basic DG ATS Life Safety Equipment Tier I Capacity N Distribution Paths 1 Concurrently Maintainable No Fault Tolerant No UPS Input Switchgear UPS UPS Output Switchgear PowerHour *Emergency lighting, and other emergency functions required by local code may specify an additional ATS Experts you trust. Excellence you count on. PDU Computer Equipment Tier II – Redundant Capacity DG +1 DG PTC Etc. Mech. Tier II UPS ATS Capacity N+1 Distribution Paths 1 Concurrently Maintainable No Fault Tolerant No UPS Input Switchgear UPS Life Safety Equipment *Emergency lighting, and other emergency functions required by local code may specify an additional ATS UPS +1 UPS Output Switchgear PowerHour ATSATS Experts you trust. Excellence you count on. PDU Computer Equipment Tier III: Concurrent Maintainability  Adds redundancy to network distribution paths as well as capacity established in Tier II systems.  Every distribution component can be removed or replaced during a planned event without loss of service. – Allows for a more proactive maintenance program – Enables site to be upgraded as technology, capacity and infrastructure requirements change  An unplanned event can still lead to disruption. PowerHour Experts you trust. Excellence you count on. Tier III - Concurrently Maintainable Gen N Gen +1 PTC PTC Etc. . Etc UPS Input Switchgear Mechanical Mechanical UPS Mechanical Component UPS +1 Mechanical Component UPS Output Switchgear Critical MCC Critical MCC Output Switchgear Critical Fan or Pump Critical Fan or Pump Computer Equipment PDU Tier III Capacity N+1 Distribution Paths 1 Active, 1 Alternate Concurrently Maintainable Yes Fault Tolerant No PowerHour Experts you trust. Excellence you count on. PDU Case Study: Tier III Data Center Design  4 Megawatts at 480 VAC  N + 1 design on the generators  Redundant paralleling buses  System is concurrently maintainable  Tier 3 certified by the Uptime Institute PowerHour Experts you trust. Excellence you count on. Case Study: Tier III Data Center Design PowerHour Experts you trust. Excellence you count on. Case Study: Tier III Data Center Design PowerHour Experts you trust. Excellence you count on. Case Study: Tier III Data Center Design PowerHour Experts you trust. Excellence you count on. Tier IV – Fault Tolerant Gen N Gen N Gen +1 Gen +1 PTC PTC Etc. Etc. UPS Input Switchgear UPS Input Switchgear Mechanical Mechanical UPS Mechanical Component UPS +1 UPS UPS +1 Mechanical Component UPS Output Switchgear Critical MCC Critical MCC UPSOutput Output Switchgear Switchgear Critical Fan or Pump Critical Fan or Pump Computer Equipment PDU Tier IV Capacity N after any failure Distribution Paths 2 Simultaneously Active Concurrently Maintainable Yes Fault Tolerant Yes PowerHour Experts you trust. Excellence you count on. PDU Case Study: Segmented Paralleling Bus PowerHour Experts you trust. Excellence you count on. Generator Set Features for Data Centers PowerHour Experts you trust. Excellence you count on. Generator Sets for Tier III or Tier IV Systems  “Disruptions to the utility power are not considered a failure but an operational condition for which the site must be prepared”  “A Tier III or Tier IV engine-generator system, along with its power paths and other supporting elements shall meet … performance confirmation tests while they are carrying the site on engine-generator power”  “Engine-generators for Tier III and Tier IV sites shall not have a limitation on consecutive hours of operation when loaded to ‘N’ demand” PowerHour Experts you trust. Excellence you count on. ISO Ratings (8528-1 Section 13)    Emergency Standby Power (ESP) – For supplying emergency power for the duration of a utility power failure – Not to exceed 200 hrs/yr – Average load factor of 70% of the standby rating over 24 hour period Limited Time Prime Power (LTP) – Limited number of hours 500 hr/year – Non-Variable load – Applications not to exceed 100% of the Limited Time Prime Power rating Unlimited Time Prime Power (PRP) – Unlimited number of hours per year (8760 hr/yr less service) – Variable load – Not to exceed 70% average of the Unlimited Time Prime Power rating during any operating period of 24 hours  Continuous Operating Power (COP) – Unlimited number of hours per year (8760 hr/yr less service) – Non-Variable load – Applications not to exceed 100% of the Continuous Operating Power rating PowerHour Experts you trust. Excellence you count on. Data Center Continuous Ratings  Data Center Continuous (DCC) Ratings meet the Uptime Institute Tier III and Tier IV requirements  Data Center Continuous (DCC) Rating is defined as: The maximum power which the generator is capable of delivering continuously to a constant or varying electrical load for unlimited hours in a data center application. PowerHour Experts you trust. Excellence you count on. Redundant Options Redundant Starters Redundant Fuel Filters Starter 1 & 2 Left Side of Engine Starter 3 & 4  Redundant Fuel Filters w/Selector Valve on Primary Stage of Fuel Filtration  Allows for fuel filter change without interruption to generator set operation Right Side of Engine PowerHour Experts you trust. Excellence you count on. Coolant Heating  Coolant Heater Installation  Heater Element  Circulation Pump  Coolant Circulation Benefits  Consistent Heat Throughout Block PowerHour Experts you trust. Excellence you count on. DC Load Management  Pre-Wired, factory-tested and validated common DC distribution box streamlines service and installation – Single point of DC distribution – Allows for isolation of batteries of individual starters – Improves ability to safely service and trouble shoot – Enables breaker to be reset, rather than removing battery PowerHour Experts you trust. Excellence you count on. Minimized AC Connections  Set-mounted AC distribution box accounts for all of the generator set’s single-phase AC accessories – Single point of connection to the generator set’s powered accessories – Simplifies design and facilitates installation – Improves ability to safely service and troubleshoot – Contributes to clean/neat design of generator set PowerHour Experts you trust. Excellence you count on. Integrated Monitoring Sensors Sensors that are integrated and connected to the generator set control are critical to providing advanced notification of a maintenance or service need. Examples  Air cleaner restriction indicators  Exhaust port temperature  Alternator bearing and RTD PowerHour Experts you trust. Excellence you count on. Cooling System  Factory designed, validated and supplied cooling systems capable of 40C and 50C ambient temperatures are critical when it comes to providing the performance and reliability that data center customers demand. 39 PowerHour Experts you trust. Excellence you count on. Summary  Using standard system topologies makes the system more reliable and serviceable.  Consider ease of maintenance and future expansion when designing system topology.  The Uptime Institute Tier Rating system serves as a good framework for evaluating redundancy, maintainability and scalability in a system design. PowerHour Experts you trust. Excellence you count on. Q&A  Type your questions, comments, feedback in the WebEx Q&A box. We will get to as many questions as we can  We will publish consolidated FAQ along with presentation and webinar recording on powersuite.cummins.com More questions or support needed? Here are your local Cummins contacts:  AZ, ID, NM, NV: Carl Knapp ([email protected]), Rocky Mountain Region  CO, MT, ND, UT, WY: Joe Pekarek ([email protected]), Rocky Mountain Region  IL, MN, WI: John Kilinskis ([email protected]), Central Region  TX: Scott Thomas ([email protected]), Gulf Region  FL, GA, NC: Robert Kelly ([email protected]), South Region  IN, KY, OH, TN, WV: Tom Stadulis ([email protected]), East Region  For other states and territories, email pow [email protected] or visit http://pow er.cummins.com/sales-service-locator PowerHour Experts you trust. Excellence you count on. Closing  Watch out for a follow-up email including – A Link to webinar recording – A PDH Certificate – A 2-minute survey link. Tell us how we did and how we can improve  Visit powersuite.cummins.com for – PowerHour webinar recording, presentation and FAQ archive – Other Cummins Continuing Education programs – Sizing and spec development tool  September webinar: NEC Update PowerHour Experts you trust. Excellence you count on.