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VOICE OF
ELECTRICITY WORKERS
POWER GRID
CORPORATION STRENGTHENING GRIDS
Northern region
finds a special place in the operations of the corporation. This region proudly
boasts of introducing a couple of new technologies to the country. Rihand-Dadri
815 Kms long HVDC link-the first HVDC bipolar project in the country for bulk
evacuation of power from Rihand –Singrauli complex to meet the load requirements
of Northern Region has been under operation since 1991. The first inter regional
500 MW HVDC back to back link was also established in Northern region at
Vindhyachal in 1989 for mutual exchange of power with Western region, further a
static VAR compensator of 140 MAVR capacity is working at Kanpur to improve the
voltage profile and to enhance security of grid since 1990. Keeping up these
traditions, a flexible AC transmission systems (FACTS) – first of its kind; has
been constructed at Ballabhgarh at a cost of Rs. 13 crores. This technology has
played a very crucial role in voltage regulation, increasing power transfer
capability of existing Ballabhgarh Kanpur-transmission line thus huge savings in
Capital investment, apart from equitable, power sharing between parallel
circuits and enhancing grid reliability. Northern region grid has unique
features of having large thermal based generating stations in Eastern portion of
the region with major load centres on the Western side. Thus the East West
transmission corridor , constituting of a number of 400KV lines of Powergrid
supported by the UPPCL; does play vital role in power evacuation and dispersal
across. Outage of any line in this corridor upsets the regional balance and has
been often a reason of grid disturbances in the past. To overcome these
operational constraints in East-West transmission corridor, Power grid has
executed a major project by interposing the series compensation on 400 KV
Panki-Muradnagar line owned by UPPCL. The project costing about 12 crores is
located in 400 KV substation of UPPCL and has been completed in February
increasing power transferring capacity of Panki-Muradnagar line by about 150 MW.
Otherwise new lines would have been necessary to achieve the same objective
which would have been 500% costlier option. Operation of the scheme has been
stabilized enabling more power absorption by UPPCL. Further the second phase of
Ballabhgarh FACTS project which is the outcome of Powergrid’s R&D efforts in
association with BHEL, CPRI, CEA and MIT/GOI is under advanced stages of
execution whereby the Thryster Controlled Series feature will be added to the
existing project to further enhance its performance level. This phase of the
project is expected to be completed very soon. An eminent feature of this scheme
has been its indigenous development.
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