Holyrood Thermal Generating Station
Encyclopedia
The Holyrood Thermal Electric Generating Station built by Newfoundland and Labrador Hydro
Corporation is located near the community of Holyrood
, in Conception Bay
, Newfoundland
, Canada
.
used in the plant to keep the furnaces going is delivered by shuttle tankers to the marine terminal constructed as part of the project.
Newfoundland and Labrador Hydro's Holyrood Thermal Generating Station is an essential part of the province’s generating system. The plant burns No. 6 heavy fuel oil
at the rate of approximately 6000 barrels (953.9 m³) per day, per unit at full load to produce steam at 1000 degrees Fahrenheit (540 degrees Celsius) and 13,790 kPa at a rate of over 500 megagrams per hour.
In a thermal generating station, fuel is burned in a boiler to convert water to steam. The high-pressure steam is directed into a turbine
that is connected to an electrical generator
that produces electricity as it turns. A seawater condenser is used for cooling the spent steam from the turbine, converting it back to water that is reused in the boiler. Holyrood uses over 250,000 litres per minute of sea water for cooling on each unit and 900,000 litres per day of fresh water for make up purpose.
The plant generators operate at 16,000 volt
s and 7000 ampere
s transformed up to 230,000 volts for transmission on the island grid to all parts of the system. In a single year the plant has the capability of generating over 3000 GW·h which and can be up to 40 per cent of the island’s annual requirements.
Newfoundland and Labrador Hydro
Newfoundland and Labrador Hydro is a provincial Crown corporation that generates and delivers electricity for Newfoundland and Labrador, Quebec, and the north-eastern areas of the United States. It also delivers voice and data services to customers in some areas...
Corporation is located near the community of Holyrood
Holyrood, Newfoundland and Labrador
Holyrood is a town on the Avalon Peninsula in Newfoundland and Labrador, Canada. It is in Division No. 1, on Conception Bay. During King William's War, the village was destroyed in the Avalon Peninsula Campaign....
, in Conception Bay
Conception Bay
Conception Bay is a Canadian bay located on the northeast coast of the island of Newfoundland. The bay indents the Avalon Peninsula with the opening of the bay to the Atlantic Ocean at the northeast. It is bounded by Cape St. Francis in the south and Split Point near Bay de Verde in the north...
, Newfoundland
Newfoundland and Labrador
Newfoundland and Labrador is the easternmost province of Canada. Situated in the country's Atlantic region, it incorporates the island of Newfoundland and mainland Labrador with a combined area of . As of April 2011, the province's estimated population is 508,400...
, Canada
Canada
Canada is a North American country consisting of ten provinces and three territories. Located in the northern part of the continent, it extends from the Atlantic Ocean in the east to the Pacific Ocean in the west, and northward into the Arctic Ocean...
.
Overview
The initial installation included two 150 megawatt (MW) turbine generators which are propelled by steam heated by two large oil burning furnaces. The Number 6 fuel oilFuel oil
Fuel oil is a fraction obtained from petroleum distillation, either as a distillate or a residue. Broadly speaking, fuel oil is any liquid petroleum product that is burned in a furnace or boiler for the generation of heat or used in an engine for the generation of power, except oils having a flash...
used in the plant to keep the furnaces going is delivered by shuttle tankers to the marine terminal constructed as part of the project.
Newfoundland and Labrador Hydro's Holyrood Thermal Generating Station is an essential part of the province’s generating system. The plant burns No. 6 heavy fuel oil
Fuel oil
Fuel oil is a fraction obtained from petroleum distillation, either as a distillate or a residue. Broadly speaking, fuel oil is any liquid petroleum product that is burned in a furnace or boiler for the generation of heat or used in an engine for the generation of power, except oils having a flash...
at the rate of approximately 6000 barrels (953.9 m³) per day, per unit at full load to produce steam at 1000 degrees Fahrenheit (540 degrees Celsius) and 13,790 kPa at a rate of over 500 megagrams per hour.
In a thermal generating station, fuel is burned in a boiler to convert water to steam. The high-pressure steam is directed into a turbine
Turbine
A turbine is a rotary engine that extracts energy from a fluid flow and converts it into useful work.The simplest turbines have one moving part, a rotor assembly, which is a shaft or drum with blades attached. Moving fluid acts on the blades, or the blades react to the flow, so that they move and...
that is connected to an electrical generator
Electrical generator
In electricity generation, an electric generator is a device that converts mechanical energy to electrical energy. A generator forces electric charge to flow through an external electrical circuit. It is analogous to a water pump, which causes water to flow...
that produces electricity as it turns. A seawater condenser is used for cooling the spent steam from the turbine, converting it back to water that is reused in the boiler. Holyrood uses over 250,000 litres per minute of sea water for cooling on each unit and 900,000 litres per day of fresh water for make up purpose.
The plant generators operate at 16,000 volt
Volt
The volt is the SI derived unit for electric potential, electric potential difference, and electromotive force. The volt is named in honor of the Italian physicist Alessandro Volta , who invented the voltaic pile, possibly the first chemical battery.- Definition :A single volt is defined as the...
s and 7000 ampere
Ampere
The ampere , often shortened to amp, is the SI unit of electric current and is one of the seven SI base units. It is named after André-Marie Ampère , French mathematician and physicist, considered the father of electrodynamics...
s transformed up to 230,000 volts for transmission on the island grid to all parts of the system. In a single year the plant has the capability of generating over 3000 GW·h which and can be up to 40 per cent of the island’s annual requirements.