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Wind VIII Engineering

Highland Substation, near Primghar, IA
New 345-34.5kV Substation Design

This project scope included the following:
Highland Substation is a new greenfield station, located near Primghar, IA. This station is comprised of a new 345-34.5kV (5)-position, 345kV ring bus, with (2) 345kV line terminals and (3) 345-34.5kV transformer positions, feeding 34.5kV shelter-aisle switchgear.

Engineering, Design, and Construction Support Services Included:

  • A (5) element 345kV bus with (8) breakers in a ring bus configuration
  • (2) 34.5kV shelter-aisle switchgear – Pre-engineered steel switchgear building
  • (1) control building

Realtime’s responsibilities included the design and engineering of the substation line terminals; bus and yard equipment (GA) layout; foundation design; development of the grading and elevations in the yard; designing the ground grid system and lightning protection system; and design and detail of the underground trench system. Realtime sized and designed the 125 VDC batteries and charger systems, DC panel boards, 120/240 VAC panel boards, station service transformers with fused safety switches, and transfer switch. Engineering provided studies and analysis, as required, for the battery sizing, bus bar rating, lightning protection, ground grid design, station service AC and DC loads, and civil/structural analysis.

Realtime engineered and designed the 345kV protection and control systems for all lines, buses, and breakers.

Engineering provided complete procurement and construction support services, including review of all shop drawings and trade prints. Realtime also assisted with bid packages and procurement activities.

Challenges Included:
Engineering was completed on a small budget and tight schedule. This substation was built to serve a wind farm facility which was under construction and required a firm in-service date, thus meeting the schedule was critical. This was the first substation of this voltage on MEC’s system with high side transformer breakers in a ring-bus arrangement and utilizing SEL-421 and SEL-411L line protection relays. As a result, new relaying schemes had to be designed and associated schematics and wiring diagrams created.

Successes:
The scope of the project from general arrangement to the relaying scheme changed and evolved throughout the project. New relaying schemes were designed and implemented through joint collaboration between Realtime and client technical teams. These scope changes were incorporated in a timely manner resulting in a final design package that exceeded the delivery needed for construction activities.

 

Lundgren Substation, near Lehigh, IA
New 345-34.5kV Substation Design

This project scope included the following:
Lundgren Substation is a new greenfield station, located near Lehigh, IA. This station is comprised of a straight bus with (1) 345kV line interconnection terminal and (2) 345-34.5kV transformer positions feeding 34.5kV shelter-aisle switchgear.

 

 

Engineering, Design, and Construction Support Services Included:

  • A (3) element 345kV bus with (2) breakers and (2) 345/34.5kV transformers in a single bus configuration
  • (1) 34.5kV shelter-aisle switchgear – Pre-engineered steel switchgear building
  • (1) control building

Realtime’s responsibilities included the design and engineering of the substation line terminals; bus and yard equipment (GA) layout; foundation design; development of the grading and elevations in the yard; designing the ground grid system and lightning protection system; and design and detail of the underground trench system. Realtime sized and designed the 125 VDC batteries and charger systems, DC panel boards, 120/240 VAC panel boards, station service transformers with fused safety switches, and transfer switch. Engineering provided studies and analysis, as required, for the battery sizing, bus bar rating, lightning protection, ground grid design, station service AC and DC loads, and civil/structural analysis.

Realtime engineered and designed the 345kV protection and control systems for all lines, buses, and breakers.

Engineering provided complete procurement and construction support services, including review of all shop drawings and trade prints. Realtime assisted with bid packages and procurement activities.

Challenges Included:
Engineering was completed on a small budget and tight schedule. This substation was being built to serve a wind farm facility which required a firm in-service date, thus meeting the schedule was critical.

Successes:
The engineering of this project was on an aggressive schedule and was completed in less than five months from the start date. This schedule allowed MEC to stay on the overall project’s baseline schedule, resulting in civil construction to finish in fall of 2013 and above grade construction to begin as early in 2014 as possible.

 

Macksburg Substation, near Macksburg, IA
New 161-34.5kV Substation Design

This project scope included the following:
Macksburg Substation is a new greenfield station, located in Macksburg, IA. This station is comprised of a 161kV four-position ring bus with two 161kV line interconnection terminals and one 161-34.5kV transformer position feeding 34.5kV shelter-aisle switchgear.

Engineering, Design, and Construction Support Services Included:

  • A (3) element 161kV bus with (4) breakers in a ring bus configuration
  • 34.5kV shelter-aisle switchgear – Pre-engineered steel switchgear building
  • (1) control building

Realtime’s responsibilities included the design and engineering of the substation line terminals; bus and yard equipment (GA) layout; foundation design; development of the grading and elevations in the yard; designing the ground grid system and lightning protection system; and design and detail of the underground trench system. Realtime sized and designed the 125 VDC batteries and charger systems, DC panel boards, 120/240 VAC panel boards, station service transformers with fused safety switches, and transfer switch. Engineering provided studies and analysis, as required, for the battery sizing, bus bar rating, lightning protection, ground grid design, station service AC and DC loads, and civil/structural analysis.

Realtime engineered and designed the 161kV protection and control systems for all lines, buses, and breakers.

Engineering provided complete procurement and construction support services, including review of all shop drawings and trade prints. Realtime assisted with bid packages and procurement activities.

Challenges Included:
Engineering was completed on a small budget and had numerous scope changes. This substation was being built to serve a wind farm facility which required a firm in-service date, thus meeting the schedule was critical.

Successes:
This schedule allowed MEC to stay on the overall project’s baseline schedule, resulting in civil construction to finish in fall of 2013 and above grade construction to begin as early in 2014 as possible.

 

Wellsburg Substation, near Wellsburg, IA
New 161-34.5kV Substation Design

windviii2This project scope included the following:
Wellsburg Substation is a new greenfield station, located near Wellsburg, IA. This station is comprised of a 161kV straight bus with (1) 161kV bus interconnection terminal and (1) 161-34.5kV transformer position feeding 34.5kV shelter-aisle switchgear.

 

Engineering, Design, and Construction Support Services Included:

  • A (2) element 161kV bus with (1) breaker in a single bus configuration
  • (1) 34.5kV shelter-aisle switchgear – Pre-engineered steel switchgear building

Realtime’s responsibilities included the design and engineering of the substation line terminals; bus and yard equipment (GA) layout; foundation design; development of the grading and elevations in the yard; designing the ground grid system and lightning protection system; and design and detail of the underground trench system. Realtime sized and designed the 125 VDC batteries and charger systems, DC panel boards, 120/240 VAC panel boards, station service transformers with fused safety switches, and transfer switch. Engineering provided studies and analysis, as required, for the battery sizing, bus bar rating, lightning protection, ground grid design, station service AC and DC loads, and civil/structural analysis.

Realtime engineered and designed the 161kV protection and control systems for all lines, buses, and breakers.

Engineering provided complete procurement and construction support services, including review of all shop drawings and trade prints. Realtime assisted with bid packages and procurement activities.

Challenges Included:
Engineering was completed on a small budget and tight schedule. This substation was being built to serve a wind farm facility which required a firm in-service date, thus meeting the schedule was critical.

Successes:
The engineering of this project was on an aggressive schedule and was completed in less than five months from the start date. This schedule has allowed MEC to stay on the overall project’s baseline schedule, resulting in civil construction to finish in fall of 2013 and above grade construction to begin as early in 2014 as possible.