North American electric utilities have long relied on analog leased telecom services for deterministic, low-latency communication for critical protection schemes. However, telecom carriers have begun to discontinue analog, and most digital alternatives offer neither the guaranteed latency nor the synchronous performance required for protection applications. Learn how Consumers Energy, an Michigan-based electric utility, effectively migrated from leased analog to digital circuits for their DTT and POTT schemes while still meeting strict latency, determinism, and asymmetry requirements.
When it comes to national defense, a reliable and resilient energy supply is critical.
In 2017, the U.S. Department of Energy’s National Renewable Energy Laboratory (NREL) invited microgrid controller manufacturers to participate in a 21-week evaluation to determine the best controller for the Energy Systems Integration Facility (ESIF). Learn the details of the evaluation method, which used the most comprehensive metrics available for microgrid controller performance evaluation, and what allowed SEL's controller to come out on top.
A global vehicle manufacturer needed to expand its North American manufacturing plant to accommodate a new vehicle model; this case study details how SEL helped them make their power system safer and more reliable by adding an SEL communication-assisted protection scheme.
For years, residents of the Brčko District in Bosnia and Herzegovina faced extended power outages and frequent power cuts. The situation changed in 2015 when SEL partnered with the nonprofit United States Energy Association (USEA) and the local utility, JP Komunalno Brčko, to implement a modern distribution network automation solution that improved the stability of the electric power supply.
Learn how an advanced metering system comprised of 2 SEL-735 Power Quality and Revenue Meters helped SEL save 4,000 gallons of water per day.
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.
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.
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.
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.
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.
SEL ICON™ Helps CUS Upgrade Its Primary Communications and Relay System
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.
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.
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.
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.
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.
Case Study - Automation of Pharmaceutical Power Distribution System
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.
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.
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.
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.
Case Study - Lawrence Livermore National Laboratory—Livermore, California
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.
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.
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.
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.
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.
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.
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.
Case Study - La Venta II Wind Farm—Oaxaca, Mexico
Case Study - American Electric Power (AEP)—South Texas, United States
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.
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.
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.
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.
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.
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.
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.
Florida Keys Aqueduct Authority is realizing $600,000 (USD) per year in electrical cost savings using the data provided by SEL meters.