The Russian-occupied Zaporizhzhia NPP has been on one power line since the backup 330 kV overhead line was damaged and disconnected due to shelling on February 20, the Energy Ministry said.
“Unfortunately, due to the difficult security situation and the lack of stable access from the military for power engineers, the line remains de-energized. Accordingly, as in all previous days, Zaporizhzhia NPP remains on one power line. However, power engineers are doing everything possible to restore it,” the ministry said in a statement on its Telegram channel on Sunday.
As reported, on Saturday evening, NPC Ukrenergo said that its power engineers had managed to repair and put into operation the 330 kV OHL, which is a backup for ZNPP.
On Sunday morning, the NPC provided updated information, noting that yesterday repair crews turned on the 330 kV line recently damaged by Russian shelling, which strengthened the stability of power supply in Dnipropetrovska oblast, but still continue to work on restoring the energy infrastructure on which the reliability of ZNPP power supply depends.
ZNPP is connected to the Ukrainian power grid through only one line – the 750 kV overhead line “Dniprovska”. The second operating line (backup), OHL-330 kV Ferosplavna-1, was disconnected on the afternoon of February 20 after the Russian shelling.
The powerful interstate power transmission line between Poland and Ukraine modernized by NEC Ukrenergo together with Polish transmission system operator PSE has successfully passed a three-day test since April 27, the NEC said.
According to Ukrenergo, the total cost of the project amounted to 350 million UAH, in addition, about 1 thousand tons of necessary equipment was provided for free by Polish partners.
The company explained that the bulk of the work was done in this node, so that the electricity produced by the Ukrainian power system could be converted to the European voltage of 400 kV and transmitted to Europe.
“It was a complex but mutually beneficial project that we implemented in cooperation with our European colleagues. It is important both for Ukraine and the energy security of Europe,” commented Volodymyr Kudrytsky, chairman of the board of Ukrenergo, as quoted in the company’s Telegram feed on Tuesday.
According to him, the line will strengthen links between the Ukrainian and European energy systems, constituting an additional element of European energy security and contributing to the development of a stable energy network in Ukraine.
“If the needs are different, we will be able to import electricity from Europe,” Kudritsky said.
The NEC added that the total length of the line is almost 400 km, more than 70% of which runs through Ukraine. The line is connected to the backbone network through an open switchgear on one of the Ukrainian power facilities. On the construction of the facility from the Ukrainian side for five months during the war worked 125 specialists – 45 employees of “Ukrenergo” and 80 contractors.
At the same time, Polish operator PSE on its auction platform on Tuesday announced a one-month auction to allocate available cross-section capacity on the Rzeszow-Khmelnitsky line for delivery from May 15-31. The capacity offered in the auction is 200 MW for exports from Ukraine and 350 MW for imports from Poland. Under the auction terms, bids from bidders will be accepted until May 8 at 16:00, with the results to be announced by the same time on May 10. Since NEC Ukrenergo during the war can only conduct daily auctions according to the requirements of ENTSO-E, it has to conduct them two days before the delivery day, i.e. the first can be expected on May 13 for the same capacity to be distributed by the Polish operator.
At the same time, the market notes that for the first week of May, Ukrenergo does not distribute cross-section capacity on the Dobrotvir-Zamosc line, through which DTEK Zakhidenergo exports 75MW hourly to Poland, due to a number of holidays in this country and the failure to hold auctions by the Polish operator.
As reported, the reconstructed 400 kV line between KNPP and Rzeszow was scheduled to be put into operation at the end of April. Reconstruction of the 750 kV Khmelnitsky NPP (KNPP) – Rzeszow line, which has not been in operation since the 1990s, provided for its transfer to the 400 kV voltage used in the European grid. Its launch allows for a 25-30% increase in Ukrainian export potential. The line will operate in synchronous mode, i.e. all participants of the Ukrainian and European markets will have access to it.
National energy company Ukrenergo and the electricity transmission system operator SEPS (Slovakia) on October 2, 2018 agreed on building a new power line as an optimal solution for boosting power transmission between Ukraine and Slovakia, the press service of Ukrenergo has reported. “According to the agreements, a new 400 kV overhead line will be built, which will connect the existing 400 kV substations Mukachevo and Velke Kapusany in the single-circuit version with the possibility of further upgrading it to double-circuit in case of an increase in the volume of interstate flows,” the company said.
According to the press service, the project also envisages reconstruction of the 400 kV open switchgear at the Mukachevo substation. “In the next three or four years, at the Mukachevo 400 kV substation, it is planned to replace the existing 400/220 kV autotransformer (АТ-3) 400/220 kV (installed in 1964), as well as equipping the 400 kV complete switchgear with gas insulation,” Ukrenergo said.
Considering the condition of the existing 400 kV overhead line Mukachevo-Velke Kapusany, which has been operating since 1963, its modernization was recognized as inexpedient. The line will work until the launch of the new line.
The company recalled that this project is a candidate for projects of mutual interest (PMI), the list of which will be approved by the Council of Ministers of the Energy Community in the autumn of 2018.
BUILDING, ENERGY COMPANY, POWER LINE, POWER TRANSMISSION, SLOVAKIA'S, UKRENERGO
