Lewiston Loop Integration

Maine, USA

Automation and Integration

Project Highlights

  • Led Automation & Integration design team for the Maine Power Reliability Program.
  • Utilized CIMPLICITY HMI user interface, SEL-RTAC RTU, and SCADA & IED Data Point Maps.
  • Provided device settings & logic diagrams.
  • Designed & validated IEC-61850 files for substation configuration, configured IED, and instantiated IED.

Lewiston Loop Project was a massive transmission system upgrade designed to strengthen reliability and add flexibility to Central Maine Power’s electric delivery system.

Lewiston Loop was the second phase of Central Maine Power’s $1.4B Maine Power Reliability Program (MPRP). The project consisted of three substations near Lewiston, Maine: Middle Street, Lower Lewiston, and Norway Substations. The sites were a mix of greenfield and brownfield designs, with all locations utilizing the IEC-61850 based Advanced Protection & Control Platform developed for the MPRP by ECI (formerly Casco Systems & Relay Application Innovation) engineers.

ECI’s team members lead the Automation and Integration design as a partner with Ulteig Engineering throughout the construction of all three stations. As one of the few engineering firms that were retained by CMP from the first phase of MPRP, our engineers brought a thorough knowledge of the standards and processes applicable to a project of this nature. We were responsible for all Automation and Integration development. Additionally, the prime engineering contractor utilized our team’s engineering & commissioning experience to support technical issues at all three locations. This ensured that the remote station design engineers had local representation and a knowledgeable partner that could help complete their designs.

Members of ECI’s team defined, developed, programmed, and lab tested the entire substation integration platform. We then provided key onsite support to the commissioning agent to troubleshooting unique MMS/GOOSE communication issues.

The project was completed on time allowing the customer to energize without delay. This represented another milestone in the development of a complete set of standards and templates subsequently used on many projects at Avangrid’s Central Maine Power, Rochester Gas & Electric and New York State Electric & Gas operating companies.

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