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Case Studies


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Duke Energy Builds Microgrid Control System With Standard Power System Components

This case study details Duke Energy's construction of a microgrid project at their McAlpine Creek Subtation using off-the-shelf SEL components in cooperation with City of Charlotte Fire Station 24.

Date Code: 20170111
Part Number: LCS0035
SEL Protective Relay Withstands EF5 Tornado

Substation equipment must withstand extreme weather conditions. But no one expected that when an EF5 tornado destroyed an entire utility substation, an SEL protective relay would remain standing and operational. Find out more in this case study.

Date Code: 20161017
Part Number: LCS0034
North American Mine Discovers Arc-Flash Detection Isn’t Just Academic—It Saves Lives and Equipment

A North American mining company recently experienced the benefits of arc-flash detection technology firsthand while in the commissioning stages of a paste backfill project. Learn more in this case study.

Date Code: 20160929
Part Number: LCS0032
UC San Diego Optimizes Microgrid System With SEL powerMAX and Protection Relays

Places like Scripps and the Health System on UC San Diego’s campus demand a reliable source of electric power. Losing power in these areas, even for a short amount of time, could compromise people’s safety and have drastic effects on critical research. This led the university to build their own microgrid so that, even during emergencies, their critical facilities would always have power.

Date Code: 20160623
Part Number: LSC0031
Improving System Performance Using SEL’s Distribution Network Automation (DNA)

Economically adding fully automated fault location, isolation, and service restoration (FLISR) as well as voltage and reactive power (volt/VAR) control improved reliability and reduced system losses—delivering a win-win project for Westar Energy and its customers.

Date Code: 20141103
Part Number: LCS0030
SEL ICON Helps CUS Upgrade Its Primary Communications and Relay System

SEL ICON™ Helps CUS Upgrade Its Primary Communications and Relay System

Date Code: 20130501
Part Number: LCS0029
Using Wide-Area Synchrophasor Measurements to Improve System Reliability

Case Study - Meeting the ever-increasing needs of electric power while improving system uptime is a challenge for any utility. POWERGRID Corporation is using a newly installed synchrophasor system to improve system operation and reliability.

Date Code: 20100910
Part Number: LCS0027
Smart Anti-Islanding Using Synchrophasor Measurements

Case Study - With the increasing use of photovoltaic distributed generation comes the need for smarter anti-islanding schemes. PV Powered and Schweitzer Engineering Laboratories, Inc. (SEL) demonstrated a scheme that utilizes wide-area measurements. The scheme accurately detects when it should disconnect the distributed generation.

Date Code: 20100910
Part Number: LCS0028
Reducing Customer Outage Duration at We Energies

Case Study - Recipient of the 2004 ReliabilityOne™ National Achievement Award for Americas most reliable utility, We Energies serves 1.1 million electric customers in Wisconsin and Michigans Upper Peninsula.

Date Code: 20090519
Part Number: LCS0016
Rural Idaho Electric Cooperative Saves Restoration Time With SEL Recloser Controls and Remote Communications

Case Study - In a 2008 annual meeting video for Clearwater Power Company (CPC), longtime customers like Gene Esser of Genesee, Idaho, reminisce about when electric power, through the cooperative, first  came to their part of rural Idaho in 1937. He recalls the excitement of watching the CPC line coming closer to his home.

Date Code: 20090424
SEL Technology Improves Relay Response Under High Fault-Current Conditions

Case Study - SEL Adaptive Overcurrent Element Technology Raises Performance Standards of Microprocessor-Based Protective Relays - The use of low-ratio CTs can expose power systems to catastrophic damage from high fault currents—a perilous situation that may go undetected. SEL’s exclusive “Adaptive Overcurrent Element” technology improves the protective response under high faultcurrent conditions when CT saturation is present.

 

Date Code: 20090406
Part Number: LCS0004
SEL Relays Simplify Power System Protection on World's Longest Overwater Application

Case Study - Lake Pontchartrain Causeway – New Orleans, LA - The Greater New Orleans Expressway Commission (GNOEC), which operates the causeway, initiated the plan to modernize the bridges infrastructure.

Date Code: 20090406
Part Number: LCS0006
Relays Play Critical Role in Automating Power System at Pharmaceutical Distribution Center

Case Study - Automation of Pharmaceutical Power Distribution System

Date Code: 20090406
Part Number: LCS0015
Relays and Communications Processors Help Energize Barrie Hydro Expansion, Automation, and Transition to Open Market

Case Study - Barrie Hydro, an Electric Power Distributor—Barrie, Ontario- Updated Barrie Hydro power distribution system combines advanced protection with flexible automation to expand its service area while improving distribution cost savings, reliability, and safety in a newly deregulated marketplace.

Date Code: 20090406
Part Number: LCS0009
Multitasking Metering System Enhances Dairyland Power’s Widespread Generation and Transmission Operations

Case Study - Dairyland Power Cooperative—La Crosse, Wisconsin - Advanced, multifunction meters and wide-area IP (Internet Protocol) communications improve metering and power quality data collection at a Wisconsin power generation and transmission cooperative.

Date Code: 20090406
Part Number: LCS0020
Utility-Grade Relays Protect Critical Motors at Denver-Area Wastewater Plant

Case Study - Metro Wastewater Reclamation District—Denver, Colorado - To provide necessary assurance of critical blower system uptime, Metro Wastewater Reclamation District replaced aging relays with utility-grade SEL-701 Motor Protection  Relays from Schweitzer Engineering Laboratories, Inc., which offered more durability, robust features, and improved availability at a lower price than conventional relays.

Date Code: 20090325
Part Number: LCS0002
RTD Enhances Protection and Reduces Maintenance at Vital Dam and Hydroelectric Power Plant

Case Study -  Hydroelectric power plant installation combines SEL-2600A RTD Modules with SEL-300G Generator Relays and SEL-387E Current Differential and Voltage Relays to provide reliable protection and improved thermal monitoring.

Date Code: 20090325
Part Number: LCS0017
Remote I/O Modules Enable DC Substation Transfer Trip for Expanding Denver Light Rail System

Case Study - Denver Light Rail Transit System—Denver, Colorado - SEL-2505 Remote I/O Module provides an economical solution for transfer-trip scheme with reliable, robust communications, compact design, and reduced dc ground exposure.

 

Date Code: 20090325
Part Number: LCS0018
Relays Provide Critical Automation and Communications Features for Windsor Substation Upgrade and Auto Plant Transformer Stations

Case Study - ENWIN Powerlines an Electric Power Distributor—Windsor, Ontario - Automation upgrade of ENWIN Powerlines aging substations was aimed at improving system reliability and control. The installation of SEL digital relays and other equipment produced some unexpected benefits, including saving on manpower resources and maintenance costs while improving on safety.

Date Code: 20090325
Part Number: LCS0008
Relays Protect Genset Solutions for Food Industry Firms

Case Study - Encorp-Controlled Power Systems—Lathrop, California and Denver, Colorado - Both California Natural Products and NOBEL/SYSCO were in search of state-of-the-art solutions for improved power system reliability.

Date Code: 20090325
Part Number: LCS0007
Relay's Intelligence Slashes Time and Costs on Retrofit of Generator for Advanced Waste-to-Energy System

Case Study - Barlow Projects Waste-to-Energy System – Perham, MN - Barlow Projects WTE site recycles trash into electric power and steam heat via advanced system that employs “recycled” turbine generator.

Date Code: 20090325
Part Number: LCS0003
Relay's Event Reports Prevent Unnecessary Losses in Materials and Production

Case Study - Mining Controls Incorporated—Beckley, West Virginia - SEL-587 Current Differential Relay generates precise event reports that enable managers of electric power systems to make informed decisions after an equipment failure or system outage has occurred.

Date Code: 20090325
Part Number: LCS0021
Power System Protection Crucial to Nuclear Weapons Test Simulations at Lawrence Livermore Facility

Case Study - Lawrence Livermore National Laboratory—Livermore, California

Date Code: 20090325
Part Number: LCS0014
Paper Mill Pioneers Power Protection Using Optical Fiber Skywire Supported by Digital Relay Protection

Case Study -  Abitibi-Consolidated—Iroquois Falls, Ontario, Canada - Abitibi-Consolidated is working toward the complete automation of its electric power system at its Iroquois Falls, Ontario mill. The system  includes SEL protective relays and communications processors as part of a sophisticated upgraded power scheme designed to improve uptime, efficiency, and safety.

 

Date Code: 20090325
Part Number: LCS0011
Wind Farm in Mexico Completes First Successful IEC 61850 Application With Multivendor Interoperability

Case Study - La Venta II Wind Farm—Oaxaca, Mexico

Date Code: 20081107
Innovative Phase-Angle Control Helps AEP Optimize Power Flow on Transmission Grid

Case Study - American Electric Power (AEP)—South Texas, United States

Date Code: 20080317
Automated Power Management System—An Economical Approach to Greater Operational Dependability

Case Study - Motor Oil Hellas Corinth Refineries S.A. (MOH)—Agii Theodori, Corinth, Greece - With industrial, commercial, and governmental power users seeking electric power system reliability and energy efficiencies, collocated electric power generation capabilities (e.g., power islands) are becoming increasingly popular. As the number of individual on-site generators increases, so does the need for more powerful means to monitor and optimize power generation and load management throughout facilities. Automated power management systems with inbuilt technology, such as high-speed load shedding and generation control, are now a proven solution to such needs.

Date Code: 20071113
Part Number: LCS0022
Automatic Transfer Scheme Retrofit Ensures Reliable Power in Calgary High-Rises

Case Study - ARX Engineering—Calgary, Alberta, Canada - The critical use of power in large commercial facilities makes continuous electric power extremely important. In order to provide a more reliable utility supply, the power system often employs redundant utility sources via a transfer scheme that switches from a preferred to an alternate source in the event of a power upset.

Date Code: 20070412
Part Number: LCS0019
Integrated Substation System for More Reliable Power, Plus Savings on Protection and Energy Costs

Case Study - Pre-engineered, Preassembled Integrated Systems for Improved Protection, Control, and Management of Industrial Substations - The SEL-7000 Integrated Substation System family offers pre-engineered, preassembled integrated systems for improved protection, control, and management of industrial substations—in packages that make higher performance the “lower cost” choice.

Date Code: 20060831
Relay’s Event Reports Offer Powerful Data for Diagnosing Power System Problems

Case Study - Conway Corporation—Conway, Arkansas - Use of the powerful event reports can increase system reliability, lower maintenance costs, and reduce the potential for system damage and resulting outages. At Conway Corporation, analysis of an SEL relay’s event report helps prevent possible transformer fire.

Date Code: 20060807
Stanford University Installs Advanced Power System

Case Study - Stanford University—Palo Alto, California - Installs Advanced Power System With an eye on the future and a need to remain self-sufficient should a fault occur, Stanford Universitys Utility Group upgraded the campus electric power substation and reconfigured controls to implement a power island via the local cogeneration power system.

Date Code: 20060717
SEL Protection and Communications Capabilities Integral to Power System Upgrade at Alberta's Dynamic Northlands Park

Case Study - Northlands Park—Edmonton, Alberta, Canada - A hub of sports, gaming, business, and entertainment action in Western Canada, the ongoing upgrade of Northlands Park’s power infrastructure requires complex orchestration and precise timing. This includes off-site simulation of digital monitoring and protection systems from Schweitzer Engineering Laboratories, Inc. to avoid interruption of park events.

Date Code: 20060526
Value of Digital Protective Relays Is Discovered at Oil and Gas Facility

Case Study - Marathon Oil Yates Field and Indian Basin Gas Plants—Iraan, Texas, and Lakewood, New Mexico - Oil and gas industry leader Marathon Oil turns to SEL-351 Relays to improve power stability, enhance control and and safety, eliminate costly shutdowns, and increase operational knowledge at two natural gas facilities.

Date Code: 20060518