352: in) steel plate in 6.1-metre (20 ft) sections with flanged joints. There are two bends in the length, one of 28 degrees at about two-thirds the way down and the other of 90 degrees just beyond the power house. The bends are of cast-iron tested to 1,700 kPa (250 psi). There are no expansion joints; the pipes are kept full of water and are buried underground so that the temperature variation is small. The pipe line is connected to a 0.91-metre-diameter (36 in) steel receiver pipe, 8.2 m long (27 ft), made of 9.5 mm-thick (
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as
Jubilee Power House. In this way, the total capacity of the station grew from 130 kW to 1000 kW. However, the limited supply of water meant that power generation could not be increased to match the growing demand of the town and of the factories at the neighbouring tea gardens. Various schemes were prepared to install a larger power station elsewhere. On January 18, 1915, while surveying for such, Municipal Engineer George P. Robertson drowned in the Great
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232:, who was pleased to hand it over to the municipality for the importance of the public interest. The work for the installation of a power station started immediately, with machines and equipment imported from Britain. There being no proper road communication, all equipment, machinery and materials had to be transported manually—a Herculean task, inconceivable in the present day.
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362: in) plate steel. It is made in two parts, one tapered to 51 centimetres (20 in) diameter and the other part fitted with a blank end bolted on. The receiver is provided with two branches of 38-centimetre (15 in) inside diameter for the two turbines and one 23-centimetre (9 in) branch for the 20 kW auxiliary generator.
375: in) steel plate in 7.3-metre sections (24 ft). The ends fit into loose collars, which are filled-in with lead; rings of ferro-concrete connected by iron bolts were cast round the collar-ends to prevent the lead from being blown out. The lower length is of 51 cm (20 in) inside diameter made from 7.9-millimetre (
197:. The road to the tea factory building is well laid and accessible by vehicles, covering a distance of 6 km (3.7 mi) from Darjeeling. Beyond the tea factory, there is a steep pony track 3 km (1.9 mi) to Sidrapong Forebay. Though not completely developed, this approach offers scenic views of the tea gardens.
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had to run
Sidrapong Hydel Power Station at a loss, there being few consumers of electrical power. But as the demand grew, a 135 kW set was added in 1905 and a third 135 kW set was installed in 1909 in the same power house. A new power house was built in 1916 at a higher location, now known
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status by the central government, with a pledge to revive the power plant. However, efforts at repairing the plant and restarting operations languished for 6 years owing to persistent technical problems and lack of attention from state authorities. The residents of the towns of
Sidrapong, Risheehat,
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Water from the smaller reservoir is passed through a 61-centimetre-diameter (24 in) underground cast-iron pipe to a pentrough 6.1 m × 1.2 m × 3.0 m (20 ft × 4 ft × 10 ft), the bottom of which is on the same level as the reservoir. The water runs
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constructed from black metal sheets of 1.3 mm (0.051 in, 16 gauge) thickness with masonry duct and concrete lining. The ducts are 61 cm × 61 cm (2 ft × 2 ft) in cross-section, except where mentioned otherwise. Water from the flumes is gathered at the forebay
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In 1931, the seven old machines of the single-phase system were replaced with five 200 kW units in the new three-phase system, one of them at the Lower Power House and four at the higher
Jubilee Power House. One 200 kW set was moved in 1942 to a still lower location at Singtam (Darjeeling
158:. commissioned on 10 November 1897, its original capacity was 2 × 65 kW, which was expanded in phases for increased demands to a total 1000 kW in 1916. Having reached the limit of the water supply, the machinery was replaced in 1931 for more-efficient triple-phase transmission.
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For many decades, the project was ignored by the state and the private sector. Larger and modern power supply networks were developed to supply the growing populations of
Darjeeling and Kalimpong. The number of workers at the power plant dwindled and the machinery fell into disrepair. During the
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This flume is 760 metres (2,500 ft) long, including a 87-metre (284 ft) section on a 1.8-metre-wide (6 ft) suspension bridge. The conduit over the bridge is 76 cm × 30 cm (30 in × 12 in) and runs alongside a footway. The
Barbatia provides the largest
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Before entering the machines there are sluice valves with provision for a 76-millimetre (3 in) bypass valve to reduce the pressure at the time of opening the main valve. There are provisions for running all the machines from both the reservoirs separately in case of necessity by providing
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political agitation, the local residents struggled to preserve the station from rival groups seeking to demolish it. The station was damaged around this time due to a landslide and remained closed for a decade. The central government and the WBSEB revived the power station in 1997 to mark its
240:, the Acting Lieutenant Governor of Bengal. It is a noteworthy fact that the first power utility run on a commercial basis for the use of the general public in India was developed by the public sector under state patronage. The total initial cost of installation of this power station was only
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In the meantime, the demand for power grew rapidly, while the old single-phase system of supply had become out-dated as it suffered from transmission losses. On 9 June 1931, the
Municipal Commissioners resolved to modernize the power supply by replacing the old machines and switching from
274:(WBSEB) took over Sidrapong Hydel Power Station when it absorbed the Darjeeling Electric Supply Undertaking on 30 January 1978. It had been smoothly running the power station until the early 1990s when it was considered that the aging power station be converted into a heritage site.
181:(WBSEB) took over operation of the station when it absorbed Darjeeling Electric Supply in 1978. In the 1980s, the station was damaged due to a landslide and remained closed for a decade, but was revived in 1997 to mark its centenary. The station has been accorded
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This flume moves alongside precipitous rocks which have been cut in places to accommodate it. This source is dirty so the flume has a silt tank at either end to screen out detritus. It provides about 85 L/s (3 cu ft/s) of water in the driest month.
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The first plant consisted of two 65 kW Crompton-Brunton single-phase, 2300 volt 83.3 Hz alternators coupled with two
Gunther's turbines. India's first hydroelectric power station with 2 × 65 kW capacity was commissioned on 10 November 1897 by
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Singtam) Power
Station. This may be called a third stage of Sindrapong since it runs in tandem with Sidrapong Power House utilising its discharge water. The present installation, therefore, consists of 3 sets of 200 kW at Sidrapong Power House plus one
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Water from the three flumes are collected in a 1,864-cubic-metre (410,000 imp gal, 65,860 cu ft) reservoir which is connected to a larger 5,680-cubic-metre (1.25 million imp gal, 200,000 cu ft) reservoir.
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This flume is a 520-metre-long (1,700 ft) conduit, with a silt tank near the intake to remove sand and loose stones from the water. The minimum quantity of water available in the driest month of April is 42 L/s (1.5 cu ft/s).
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quantity of clean water: about 110 L/s (4 cu ft/s) in the driest month. The flume has a silt tank with scour gates near its intake; in heavy rains, these gates are left partly open so that grit is automatically scoured out.
385: in) steel in 6.1-metre sections (20 ft). The two different sections are connected with a 61 cm × 51 cm (24 in × 20 in) steel reducing piece, 51 centimetres (20 in) long.
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from the pentrough down to the gates of the turbines through steel pipes 220 metres (720 ft) long and 380 mm (15 in) inside diameter. The pipes are made from double-riveted 4.8-millimetre (
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Water from the larger reservoir is fed to another penstock for a length of 221 m (725 ft). This pipe is of 61 cm (24 in) inside diameter, assembled from 4.8-millimetre (
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The second and more-popular approach is via
Bloomfield tea factory, covering a stretch of 11 km (6.8 mi). The former foot track beyond Bloomfield factory was developed by the
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100,000) was secured from the government, and a site for the power station was selected at the foot of the Arya Tea Estate at Sidrapong. The site was then a fine orchard of the
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Sidrapong, Heritage Power Station, Published by Corporate Public Relations Department, WBSEB, Vidyut Bhavan, Calcutta 700 091. 10 November 1997 Centenary Booklet
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The switch yard is located immediately below the machine floor level on the northern part of the building. It has housed four 0.4/6.6 kV transformers.
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Arya and Bloomfield formed a committee on 1 December 2003 to revive and resuscitate the historic and monumental hydel project.
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These power plants have either been closed or on the brink of closure due to age and obsolescence.
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Beacon, Electricity - The ever lasting nightmare / Sidrapong - A Glorious Chapter in our History
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decided to set up a hydroelectric power station for the purpose of lighting the town. A loan of
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Some of the oldest electric power plants (or stations) established in India are as follows:
288:(Nepalese for 'streams'): Kotwali, Hospital and Barbatia. This water is channeled through
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167:(Nepalese for 'streams') Kotwali, Hospital and Barbatia, channeled through a network of
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Encyclopedia Darjeeling by Barun Roy, Published by New Media Foundation, Kolkata
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Fallen Cicada by Barun Roy, Published by Beacon Publications, Darjeeling.
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interconnection in the pipes along with necessary valves and gates.
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centenary. In a special ceremony, the station was accorded
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hydel generation set of 20 kW for auxiliary power.
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There are 2 approaches to the station. The first is via
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to reservoirs, then passed down 220-metre (720 ft)
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On 11 February 1896, the Municipal Commissioners of
282:The power station is fed with water from the three
260:single-phase 83 Hz to three-phase 50 Hz.
60:. Unsourced material may be challenged and removed.
204:to a 4.3-metre-wide (14 ft) metalled road (
732:Buildings and structures in Darjeeling district
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752:Hydroelectric power stations in West Bengal
150:town, is the oldest hydel power station or
681:(15 January ed.), Beacon Publications
602:"Sidrapong Hydel Power Station(3X 200 KW)"
120:Learn how and when to remove this message
747:Energy infrastructure completed in 1897
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69:"Sidrapong Hydroelectric Power Station"
654:Shivanasamudra Falls#Power generation
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133:Sidrapong Hydroelectric Power Station
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58:adding citations to reliable sources
27:Hydroelectric power station in India
672:(1st ed.), Beacon Publications
272:West Bengal State Electricity Board
179:West Bengal State Electricity Board
185:status by the central government.
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578:Sumera Hydroelectric Power Plant
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443:Sumera Hydroelectric Power Plant
420:The oldest power plants in India
161:The station uses water from the
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583:Faridabad Thermal Power Station
475:Faridabad Thermal Power Station
461:Palra Hydroelectric Power Plant
142:), located at the foothills of
45:needs additional citations for
742:Economy of Darjeeling district
202:Darjeeling Gorkha Hill Council
146:12 km (7.5 mi) from
1:
436:Hydroelectric Power Plant in
429:Sidrapong Hydel Power Station
140:Sidrapong Hydel Power Station
18:Sidrapong Hydel Power Station
757:1897 establishments in India
543:Pharping Hydro Power Project
244:1.2 lakhs (120,000 rupees).
293:reservoir, then fed into a
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278:Water sources and hydrology
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563:Hydroelectric power plant
152:hydroelectric power plant
247:For the first few years
677:Roy Barun (Ed) (1998),
533:Renewable energy portal
249:Darjeeling Municipality
703:7 April 2015 at the
434:Shivanasamudra Falls
230:Maharajah of Burdwan
54:improve this article
737:Dams in West Bengal
175:to the generators.
715:East Himalaya News
668:Roy Barun (2003),
438:Kingdom of Mysore
413:cultural heritage
238:Sir C. C. Stevens
183:cultural heritage
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553:West Bengal
393:Switch yard
206:gravel road
726:Categories
662:References
548:Darjeeling
408:Gorkhaland
401:Renovation
218:Darjeeling
189:Approaches
148:Darjeeling
80:newspapers
698:Sidrapong
479:Faridabad
337:Penstocks
173:penstocks
110:July 2017
701:Archived
489:See also
457:in 1931.
295:penstock
224:1 lakh (
455:British
451:Aligarh
380:⁄
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328:Forebay
256:River.
254:Rangeet
212:History
94:scholar
290:flumes
285:jhoras
169:flumes
164:jhoras
137:a.k.a.
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589:Notes
465:Palra
156:India
101:JSTOR
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73:news
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