Ukrenergo is building 330 kV overhead line Zakhidnoukrainska—Bohorodchany, which is over 103 km long. The line will pass through the territory of Zhydachiv district in Lviv region and Rohatyn and Halych districts in Ivano-Frankivsk region and will be composed of two parts: reconstruction of a section of OHL 330 kV Bohorodchany—Burshtynska TPP (60 km) built back in 1990 and new construction of a section of the transmission line from SS 750 kV Zakhidnoukrainska to tower No. 18 on the side of Burshtynska TPP (43 km).
The first phase is underway: 65 of 206 supports and 8.9 of 60 km of wire replaced in the existing section of OHL 330 kV Bohorodchany—Burshtynska TPP, which will also undergo the replacement of suspension insulators, wire, lightning protection cable alongside with the installation of a fibre-optic communication line.
The new transmission line will enhance the reliability of the grid operation and power supply to consumers in Ivano-Frankivsk region and will also improve the overall transfer capacity of the power grid in the western region. On top of that, the construction of OHL 330 kV Zakhidnoukrainska—Bohorodchany will make it possible to maintain the level of electricity exports to European countries due to a potential transfer of electricity supply of consumers of Oporniansky power node (consumers of Halych, Tysmenytsia, and Kalush regions in Ivano-Frankivsk region and partly the city of Ivano-Frankivsk) from Burshtynska TPP Island to the IPS of Ukraine as envisaged in the Transmission System Development Plan. Commissioning of the new OHL 330 kV will improve the transfer capacity in Zakhid—Vinnytsia profile by 100 MW (up to 4200 MW).
The new transmission line will also support the operation of Dnistrovska HPSPP in the pumping and generating modes with three hydraulic units in the regular configuration, and with four hydraulic units in view of the construction of OHL 330 kV Dnistrovska HPSPP—Vinnytska 750. For the power system, this means additional control capacities of HPSPP: 421 MW in the pumping mode and 324 MW in the generating mode.
The completion of OHL 330 kV Zakhidnoukrainska—Bohorodchany construction is scheduled for 2021. It is financed from the income received from the cross-border capacity allocation and the profit of NPC Ukrenergo.
It should be noted that in progress is also the reconstruction of SS 330 kV Bohorodchany with the replacement of relay protection, emergency automation and communication devices, as well as the reconstruction of SS 750 kV Zakhidnoukrainska with the construction of a new 330 kV cell to connect the newly built OHL 330 kV Zakhidnoukrainska—Bohorodchany.
Also, a complete reconstruction of SS 330 kV Bohorodchany is planned soon under the Second Power Transmission Project with the financial support provided by the International Bank for Reconstruction and Development.
All these projects are envisaged in the Transmission System Development Plan and are implemented by Ukrenergo under annual investment programmes.
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