Below you'll find a list of all posts that have been categorized as “Protective Relaying”
Exponential Engineering, in partnership with Electrical Reliability Services, is in an ongoing relationship to expand Xcel Energy Substation capacity. EEC provides the SCADA configuration upgrades including programming and commissioning of the status and control points.
EEC provided configuration and installation support to Xcel Energy for the Sky Ranch SCADA Upgrade using Novatech’s OrionLX RTU. EEC worked with contractors to install the equipment then modified the hardware configuration, the RTU database and the HMI screens to match the new design. EEC then tested the full functionality of the SCADA system, including the programming of the ATO …
Designed the electrical system for a renewable energy distributive generation style project on an island in the British Virgin Islands. Existing power was generated by diesel generators and the goal of the project is to reduce generator fuel consumption by 80%. Wind turbine(s), solar arrays and a battery system are part of the design to reach this goal. The island …
Designed and provided construction oversight for nine small substations providing power to pumping stations on an oil pipeline. The design included motor starting studies, protective device coordination and specification and ordering the mais substation equipment. EEC also provided bidding services to select the contractor(s).
Design of complete replacement of electromechnical relays with microprocessor relays for Unit 1 and Unit 2 (450MVA). Design of replacement of electromechanical line differential relays with microprocessor relay for Unit 3 (450MVA). Design included removal drawings for existing equipment and wiring, installation drawings with separate panel mounted units for retrofit to existing control boards, new AC and DC schematics, interface …
Design of generator, transformer, bus and 5kV protection for three 206MVA gas turbine generators (Units 2, 3, 4) at Fort Saint Vrain Station in North Central Colorado; design included one-lines, AC three-lines, DC schematics and relay settings; provided commissioning support to site during outage and calculations for 100% stator ground fault protection. Primary and Backup relaying for generators and generator …
For each project, we were asked to be involved as a third party to review relay settings proposed by First Energy’s design engineering firm. We provided relay settings calculations in Mathcad, which included our recommended changes.
Designed replacement of electromechanical transformer differential relays with microprocessor relay. Existing transformer differential relay had CT inputs from four generators and four transformers causing us to parallel CT inputs into the new relay. Design included removal drawings for existing equipment and wiring, installation drawings with separate panel mounted units for retrofit to existing control boards, new AC and DC schematics, …