|
Zaara Street Power Station was situated on Zaara Street, in the city of Newcastle, New South Wales, Australia. It was built to supply power for the New South Wales Government Railways (NSWGR) in 1915, when the first turbo-alternator of 2.5 megawatts was commissioned. The installation of additional plant in 1920 led to a generating capacity of 28.5 megawatts (MW). History.〔Power Supply and Distribution by Harold Myers 1925〕 In 1920 Zaara St started off with a 7.5MW Curtis GE turbo alt(No2) from White Bay and a 2.5MW GE turbo-alt(No3A) both delivering 6.6KV at 25HZ. Additional power was needed in 1921 and another 2.5MW Vickers-Willans alternator(3B) was added. Steam was supplied by 4 Babcock & Wilcox WIF long drum chain grate boilers. Each boiler produced 40,000 lbs/hour at 200psi and 580degF. 1922 saw a 2.5MW British Thompson Houston 50HZ alternator(4A) and a 1.5MW Parsons alt(No1) added. More 50HZ power was required in 1924 and a 7.5MW BTH machine(No5) installed. This was followed in 1928 by another 7.5MW BTH alt(No6). Terminal voltage for these 50HZ machines was 11KV.Four extra boilers were installed from 1930 to supply these machines. The last change to the low pressure plant was that the No1 Parsons 1.5MW machine was removed and in its place a 7.5MW Bellis & Morcom alternator(No1) in 1936〔The Power Station of the NSWGR-Mark Fetscher〕 Surplus capacity in the Railway Commissioner's power grid was sold to municipal councils and other bodies responsible for the supply of electricity to the general public. Zaara Street Power Station was connected to the grid of the Electricity Supply Department of the Newcastle Borough Council in 1917, and supplied much of Newcastle's electricity needs throughout the 1920s. Later known as the Newcastle Electricity Supply Council Administration (NESCA), the Newcastle Borough Council also operated a small power station with two alternators and a capacity of approximately 2.6 megawatts. Built in the 1890s, 'NESCA' Power Station was situated approximately one mile from Zaara Street, and closed in 1953. High Pressure plant. In 1939 a different approach was taken to supply more power more reliably. The first addition was a 15MW Brush-Ljunstrom 50HZ turbo-alternator(No4). The next year 12MW Fraser + Chalmers ex Pyrmont alternator was placed in the No3 position. Steam was supplied for all the high pressure plant by four Babcock & Wilcox high head boilers. Each boiler produced 155,000 lbs/hour at 420psi and 810degF. A 20MW British Thomson Houston alternator(No4) was delivered in 1942 and a 15MW Westinghouse alternator(No5) installed in 1944. The No(5) 7.5MW machine became the number 7 alternator at this time to avoid confusion. Also, the No(2) 7.5MW machine was replaced with a slightly larger 8.75MW Dick Kerr alternator(No2), ex White Bay. This gave Zarra Street a new total output of 70.75MW. Control of Zaara Street was transferred from the NSWGR to the Electricity Commission of New South Wales on 1 January 1953. By the 1960s only the new boilers and sets 4,5&7 were still in operation. The ECNSW continued to operate the power station until it was officially closed in 1975. Zaara Street Power Station was demolished in 1978, and all railway facilities in the vicinity were redeveloped into what is now known as The Foreshore. No traces of the power station have survived on the site. ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Zaara Street Power Station」の詳細全文を読む スポンサード リンク
|