Sector: Energy Infrastructure
Sunnybrook Health Sciences Centre
High Voltage Emergency Power Renewal
HH Angus has been providing mechanical and electrical engineering at the Sunnybrook campus since 1945. The complex now totals more than 2,000,000 ft2. In that time, a great many individual projects have been successfully delivered. The high voltage emergency power renewal described below was a large infrastructure improvement project. Other large project examples from our work at Sunnybrook include M Wing and the Toronto Sunnybrook Cancer Centre.
High Voltage Emergency Power Renewal
The renewal project involved replacement and upgrades of existing forty-year-old standby generators and associated infrastructure. The specifics included: installation of 8.75MW of diesel generators, new medium voltage switchgear, a selective catalytic reduction system for each new generator (for emissions control), fuel oil system upgrades and replacement of a campus-wide PLC-based load management system. The selective catalytic reduction systems allow Sunnybrook to use their plant for offsetting peak loads during summer months and to realize savings in annual hydro expenditures.
The high voltage emergency power renewal project replaced the existing 4160V generating capacity of 4.3MW with 8MW of new 4160V generating capacity. A 600V, 750kW generator replaced an existing 400kW generator.
SERVICES
Mechanical Engineering | Electrical Engineering | Prime Consultant
PROJECT FEATURES
Status: Completed 2015
LOCATION
Toronto, Ontario
KEY SCOPE ELEMENTS
Large infrastructure improvement project involving architectural and structural design for a building plenum expansion | Installed 8.75MW diesel generator | Added selective catalytic reduction system for each new generator | Multi-phase project to ensure service redundancy for critical functions
Prime consulting services
HH Angus was the Prime Consultant, as well as the electrical and mechanical engineer for the project. We retained the services of an architect and structural engineer to design a building plenum expansion for the new diesel generators. The general trades work included extensive structural steel work, excavation and concrete work.
HH Angus managed equipment procurement for the project and helped Sunnybrook Health Sciences select an equipment supplier to provide a .9 million CDN (2013) equipment package.
Phasing for service redundancy
The project was multi-phased to allow temporary power to maintain service redundancy for critical healthcare functions while existing diesel generators were decommissioned and the new structure constructed and plant equipment installed.
MAN Diesel
Bonaire, 14 MWe Power Station
The island of Bonaire (formerly the Netherlands Antilles), has been a special municipality of the Netherlands since 2010. It lies in the Leeward Antilles chain of Caribbean islands, with an area of 288 square kilometers (111 sq.mi.)
With the commissioning of its sophisticated new sustainable wind-diesel hybrid power plant, Bonaire became the first Caribbean island capable of 100% renewable energy. This project’s aim was to transform today’s largely fossil fuel-based energy supply infrastructure in Bonaire into one based on the application of 100% sustainable energy sources within five years (bio diesel extracted from algae).
The Bonaire project featured a 14 MWe turnkey power station with site work, roads and electrical connections. HH Angus was responsible for all mechanical, electrical, civil structural engineering, including various piping systems (heavy fuel oil, light fuel oil, lubricating oil, compressed air, etc), high and low voltage distribution, and PLC control systems. All mechanical detailing was completed with 3D CAD software, with related materials captured in Excel for the bill of material procurement.
Our design scope covered a capacity increase to 20 MW (designed for future use) and was based initially on Heavy Fuel Oil (HFO) as the principal fuel, and light fuel oil (LFO) as an alternative. The plant was designed with the capability to be converted to operate on biofuel in future. Also included in the project was an extensive tank farm with storage of HFO, LFO and lubricating oil.
The plant consists of 5 X2.85 MWe MAN Diesel generating sets at 11kV, and was designed as a base load plant with parallel displacement production from a windfarm generating system. Each genset is selectable to dual busbar systems that each step up to 30kV for island distribution.
This is the only power plant on the island. The diesels supply voltage regulation, as well as VARs and power production to supplement the island’s needs when wind production has been harvested to maximum benefit.
Special care had to be taken to integrate the control systems of the wind turbines and the diesel engines, as the grid performance has to be maintained through fluctuations of the wind resource. The diesel engines have to respond to the changes in output from the wind turbines in order to maintain electrical grid balance.
SERVICES
Prime Consultant | Mechanical Engineering | Electrical Engineering
PROJECT FEATURES
Status: Completed 2010
LOCATION
Leeward Antilles, The Caribbean Islands
KEY SCOPE ELEMENTS
Wind-diesel hybrid power plant | 100% renewable energy | 14 MWe turnkey power station | Piping system, civil structure, high and low voltage distribution and PLC control systems | Capacity increase to 20MW | Heavy fuel oil as principal fuel & light fuel oil as alternative | Extensive tank farm with storage of HFO, LFO and lubricating oil
MAN Diesel
Ariguanabo Cuba, ~23 MWe Power Generation Plant
In 2006, the government of Cuba began an ambitious $2 billion program to modernize its decaying Soviet-era energy infrastructure.
For this ~23 MWe turnkey power station in the town of Ariguanabo, approximately thirty miles from Havana, HH Angus was engaged to provide all mechanical and electrical detailed design, including various piping systems (heavy fuel oil, light fuel oil, lubricating oil, compressed air, steam tracing, etc.), as well as high and low voltage distribution.
The power plant consists of twenty ~1.15 MWe MAN diesel generating sets and was designed as a continuously operating plant.
Generation is at 13.8kV onto a double-ended station (10 generators/bus), stepping up to 34.5kV for distribution across the entire island of Cuba. The plant was designed to operate as a base load plant. The site included extensive tank farm storage of heavy fuel oil, light fuel oil and lubricating oil. Steam tracing was provided on HFO systems. The main fuel is heavy fuel oil, with light oil as the backup.
SERVICES
Mechanical Engineering | Electrical Engineering
PROJECT FEATURES
Status: Completed 2009
LOCATION
Ariguanabo, Cuba
KEY SCOPE ELEMENTS
~23 MW Power Station (20 X 1.15 diesel generating sets) | Continuous operation / functions as a base load plant | High and low voltage distribution
Cadillac Fairview
High Voltage Electrical Distribution Upgrade
HH Angus was the M&E Engineering Consultant on the original design and construction of the iconic TD Centre, and we have been working with Cadillac Fairview ever since, designing ongoing upgrades and improvements to this landmark site, Canada’s first skyscraper.
HH Angus was retained as Prime Consultant to replace existing transformers at the Toronto Dominion Centre's Towers 1, 2 and 3, with the replacement of 600V switchgear. Our mandate was to implement this infrastructure renewal with no impact to services or disruption to tenants at the fully-occupied buildings.
The project scope included preparation of specifications, drawings and contact documentation for the removal of numerous 2000 kVA PCB oil-insulated transformers and replacing them with dry-type transformers. Because PCB is a designated substance, stringent procedures were required for handling, rigging and disposing of the transformers. Careful attention was paid to construction sequencing to ensure continuity of services during weekend shutdowns for switchgear replacement.
Extensive rigging procedures were also required for removal of the old equipment and installation of new units, as the transformers were located in both the basement and penthouse of each building.
SERVICES
Prime Consultant | Electrical Engineering
PROJECT FEATURES
Status: Completed 2010
LOCATION
Toronto, Ontario
KEY SCOPE ELEMENTS
Replaced multiple transformers at TD Centre (3 towers) | Removed 2000 kVa PCB oil-insulated transformers | Initiated careful construction sequencing - minimizing disruption to building operations | Extensive rigging procedures required for removal and installation of both old and new equipment
Reducing Impacts on Tenants
This complex project was executed successfully, with minimal impact to our client’s tenants.
Brantford Power
Landfill & WWTP Cogeneration 5.4 MW
HH Angus was retained to provide a turnkey natural gas fired cogeneration plant to take in landfill gas and digester gas and, in turn, produce electricity to feed to the Ontario power grid.
The cogen plant also transfers heat back to the digesters for process treatment of municipal liquid waste. In a future phase of the project, heat would be distributed to a district energy system.
Brantford is unique in that its solid waste landfill and the municipal wastewater treatment plant (WWTP) are adjacent to each other. Based on the available methane from the WWTP and the landfill, two 2.7MWe engines were provided (5.4MWe total), with a provision for an additional set as the landfill continues to grow.
The engine hot water is 95˚C and designed to be distributed to the adjacent WWTP. The design allowed for future exhaust gas recovery when the planned district energy system was developed.
The electrical output is 42% of the energy input, and the overall efficiency of the system was designed to be 88%, assuming that full thermal recovery would be implemented in a future district energy phase.
The station service load is supplied by the utility at 347/600V; however, the power is generated at 4160V and steps up to 27.6kV to supply into the grid. Synchronization is at 4160V.
SERVICES
Prime Consultant | Mechanical Engineering | Electrical Engineering
PROJECT FEATURES
Status: Completed 2010
LOCATION
Brantford, Ontario
KEY SCOPE ELEMENTS
Prime Consultant for Design-Build | |Provided two 2.7MWe engines based on available methane | Integrated 42% of electrical output | Overall efficiency designed for 88% at implementation of full thermal recovery