Koradi Thermal Power Station

Koradi Thermal Power Station (KTPS) is located at Koradi near Nagpur, Maharashtra. The power plant is one of the four major power plants in Vidarbha – a power surplus region of India.[3] The power station began operations in 1974 and is one of the nine active power stations operated by Maharashtra State Power Generation Company Limited (Prajot), a subsidiary of Government of Maharashtra owned Maharashtra State Electricity Board (MSEB).[4] The plant operates 8 units and has a total power generation capacity of 1700 MW.[1] A proposed 440 kilovolt high power transmission line from Koradi to Bhusawal would join Nagpur with Mumbai.[5] KTPS campus also contains training institute of MahaGenco for middle and senior level engineers, technicians and other staff.[6]

Koradi Thermal Power Station
CountryIndia
LocationKoradi near Nagpur, Maharashtra
Coordinates21°14′56″N 79°5′56″E
Commission date6 June 1974[1]
Owner(s)Mahagenco
Operator(s)
Thermal power station
Primary fuelCoal
Turbine technologyClosed cycle with cooling tower.
Cooling sourceBalancing Tank
Power generation
Units operationalZamech ELBLAG, Poland and BHEL manufactured
Nameplate capacity2400 MW

Source: Prajot[2]

Power station

KTPS is located on the northern side of Nagpur and is spread across an area of 30,337 km2. Coal for KTPS comes from various nearby collieries of Western Coalfields Limited (WCL) located at Silewara, Pipla, Patansavangi, Kamptee, Inder, Walni, Gondegaon and Saoner. These are at an average distance of 10 kilometres (6.2 mi) away. The plant approximately requires 16,000 to 17,000 tonnes of coal per day.[2]

Map of Nagpur district showing Koradi

The water for KTPS comes from water reservoir of nearby Totaladoh hydroelectric power station.[7] Also, Nagpur Municipal Corporation (NMC) provides treated water from its sewage treatment plant.[8] According to MSEB, the average unit cost of power generation at KTPS is 6.28 paise/kWh at 70 percent load factor while it is 13.52 paise/kWh at 25 percent load factor. The average cost for transmitting this power to Mumbai is 1.26 paise/kWh.[9]

Since its commissioning, KTPS saw expansion in stages. First unit of 115 MW began in 1974. Later, three more units each of 115 MW, were added between 1975 and 1976 while 200 MW unit was added in 1978. The Project Managers for construction of 200/210 MW units were Sri P.S. Khirwadkar followed by Sri C.N.Swamy. Two more units, of 210 MW each, between 1982 and 1983.[1] Major developments were undertaken by Ashok R Agrawal who developed the Power Plant. MSEB has finalized further expansion by increasing the capacity of 3 units to 660 MW thereby taking the total capacity of KTPS to 1560 MW. The work is expected to finish by 2014.[10] Bharat Heavy Electricals Limited (BHEL) is expected to get equity participation by supplying important equipments in the ₹80 billion (US$1.1 billion) expansion plan.[11]

In order to reduce air pollution the plant's units are equipped with electrostatic precipitators.[12]

Capacity
StageUnit NumberCapacity (MW)Date of CommissioningStatus
Stage 111151974 JuneNot Running
Stage 121151975 MarchNot Running
Stage 131151976 MarchNot Running
Stage 141151976 JulyNot Running
Stage 252001978 JulyNot Running[13]
Stage 362101982 MarchRunning
Stage 372101983 JanuaryRunning
Stage 4866016/12/2015Running
Stage 4966022/11/2016Running
Stage 4106604/14/2017Running
TotalTen3060

MAHAGENCO has already decided to close Unit 5 and 6 and eventually also stop unit 7. All these units are more than 30 years old and producing with poor load factor.

[14]

Thermal Power Research Center

The Central Power Research Institute (CPRI) of Government of India, which serves as regulating body for testing of instruments and uploading of licenses in India, is going to set up a Thermal Research Centre (TRC) at Koradi. However, the KTPS expansion plans have created a problems in land acquisition for TRC.[15]

Disruptions

On February 27, 2005, a major fire broke out at KTPS and had to be shut down causing blackouts in most districts of Marathawada.[16] In May 2007, the power plant was shut down due a strike by workers.[17]

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References
  1. "Koradi Thermal Power Station". Government of Maharashtra. Maharashtra State Power Generation Company Limited. Archived from the original on 7 November 2009. Retrieved 5 January 2009.
  2. "Koradi Power Station: Details at a glance" (PDF). Government of Maharashtra. Maharashtra State Electricity Board. 2005. Archived from the original (PDF) on 19 February 2009. Retrieved 5 January 2009.
  3. "Coal-rich Vidarbha can make Maharashtra power surplus". Retrieved 20 April 2015.
  4. "Index of power stations". Government of Maharashtra. Maharashtra State Power Generation Company Limited. Archived from the original on 7 November 2009. Retrieved 5 January 2009.
  5. Electrical Power System Design. Retrieved 20 April 2015.
  6. "Koradi Training Centre". Government of Maharashtra. Archived from the original on 18 March 2009. Retrieved 5 January 2009.
  7. Vijay P. Singh; Ram Narayan Yadava (2003). Water Resources System Operation. Allied Publishers. p. 147. ISBN 978-81-7764-548-4.
  8. "Mahagenco to give Rs 15cr to NMC for waste water project". The Times of India. Retrieved 20 April 2015.
  9. "The Report Of The Krishna Water Disputes Tribunal With The Decision" (PDF). Krishna Water Disputes Tribunal. Department of Irrigation, Government of Andhra Pradesh. 1973. pp. 142, 461. Archived from the original (PDF) on 23 October 2007. Retrieved 5 January 2009.
  10. "Ongoing projects" (PDF). Maharashtra State Electricity Board. Maharashtra State Power Generation Company Limited. Retrieved 5 January 2009.
  11. "BHEL may take equity in Koradi power plant". The Hindu Business Line. Retrieved 20 April 2015.
  12. "Assessment of requirement of Bag filter vis a vis Electrostatic Precipitator in Thermal Power Plants" (PDF). Ministry of Environment & Forests, Govt. of India. Central Pollution Control Board. 2007. Archived from the original (PDF) on 9 April 2009. Retrieved 5 January 2009.
  13. "Replacement of Old & inefficient thermal units by supercritical units- Decommissioning & retirement of Mahagenco's 200MW Unit 5 of Koradi TPS" (PDF). Central Electricity Authority. 21 April 2017.
  14. Tariff Petition before MERC
  15. Batra, Sunhash (5 June 2008). "Proposed expansion of KTPS may cost TRC to Vidarbha". Hitavada. Retrieved 5 January 2009.
  16. "Blackout". The Hindu. 28 February 2005. Retrieved 5 January 2009.
  17. "Koradi thermal power station generation stops". Press Trust of India. 24 May 2007. Retrieved 5 January 2009.

Mahagenco has sought permission from Maharashtra Electricity Regulatory Commission (MERC) to close down unit 5 and 6 of Koradi (200 MW and 210 MW). Genco wants to shut 1,040MW generation Ashish Roy | TNN | Jul 4, 2014

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