Upon the results of an international tender, Ukrenergo signed a contract with PJSC “Kyiv Energy Construction Company” in late September on implementation of the project for rehabilitation of SS 750 kV Zaporizka of Dniprovska Power System.
SS 750 kV Zaporizka is the key object of the south-eastern part of the Integrated Power System of Ukraine, which ensures power delivery from the largest in Europe Zaporizka NPP and supplies power to the industry and consumers of the cis-Dnipro region.
The rehabilitation involves the replacement of high-voltage equipment 750 kV and 330 kV (except for the previously replaced circuit breakers and current transformers) and the power supply system for own needs, as well as the installation of a new autotransformer 750/330/15.75 kV and new transverse transformers. In addition, telemechanisation and automation of the substation will be deepened. This will bring it to a qualitatively new technical level in accordance with European standards of reliability and safety of operation, as well as improve the quality of electricity transmission.
“The rehabilitation will dramatically increase the reliability of this node substation. In addition, the replacement of equipment is one of the important components of the comprehensive Ukrenergo substation automation program, which is among the priorities of the Ukrenergo development strategy in the process of integrating the Ukrainian power grid into ENTSO-E,” said Oleh Pavlenko, Head of Project Management Office at Ukrenergo.
The rehabilitation of SS 750 kV Zaporizka constitutes a part of the project “Rehabilitation of substations in the eastern part of Ukraine”, implemented at the expense of the Government of the Federal Republic of Germany, with the German KfW acting as a loan manager.
SS 750 kV Zaporizka is one of the two most powerful and “youngest” substations of Dniprovska PS, commissioned in 1986. The total capacity of autotransformers amounts to 1998 MVA. The PS includes open switchgear (OSG) 750 kV, OSG-330 kV, OSG-35 kV. Three 750 kV lines, six 330 kV lines and two 35 kV lines are connected to the substation.