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Yakut bulbs insure against blackout
The accession of the two energy districts of the region to the energy system of the Far East should mitigate the consequences of accidents.
Since January 2019, two previously isolated energy districts of Yakutia have been connected to the power grid common to five subjects of the south of the Far East. The rest of the regions still live with isolated energy systems, and to get rid of the associated problems of Yakutia, they had to spend more than a half dozen billion rubles. Local authorities assure that the interconnection will increase the reliability of energy supply, and experts agree with such estimates, although they emphasize that they will have to pay for higher reliability. EastRussia understood in details.
The total installed generation capacity in the Far East on 1 in January, 2019, was, according to the ODE of the East, 11,26 MW. Capacities of the connected generation in Yakutia in the form of a cascade of the Vilyui HPP, Svetlinskaya HPP, Yakutsk TPP and TPP-2 - another 1,5 MW. At the same time, there is no energy shortage in the Far East. According to the "ODU of the East", for 2018 a year, all generation generated 37,65 million kWh (almost a third gave the Zeya, Bureiskaya and Nizhne-Bureyskaya HPPs), and the regions of the southern Federal District consumed only 34,2 million kWh in the south, the difference is the export of electricity to China.
Historically, two power districts of Yakutia have been isolated from the Unified Energy System. The power supply of the Central Energy District was provided by the Yakut GRES-1 and CHPP, the Western Energy District - the Vilyuiskaya and Svetlinskaya HPPs. In all stations there were interruptions. However, in a region where, as is known, winter temperatures fall below 50 degrees, the problem of power supply reliability is a key one.
Due to accidents at the networks and stations, including the new Yakutskaya GRES-2017, introduced in 2, the Yakut consumers often remained without electricity, - entire settlements or even areas. So, for example, in November 2018 of the year, as a result of the accident on the high-voltage line “Maya-Borogontsy” without light, in the over-river regions of Yakutia turned out to be 56 thousand people. At the same time, it should be noted that even the work of the integrated power system does not save the south of the Far East from blackouts related to the malfunction of worn-out equipment: the last such happened in August 2017, leaving more than 1,5 million people without light.
In order to unite the two energy districts of Yakutia with the rest of the East OES, they had to build a total of 750 km of high-voltage lines on 220 kV connecting the Lower Kuranakh and Maya, and two new large power centers - the Maya kilnovolt transformer station in the suburbs of Yakutsk and the transit substation 220 kV Tommot (282 MBA), the final stage of the entire project, explains the Deputy Chairman of the Government of Yakutia Alexey Kolodeznikov. According to him, the project of JSC FGC UES began in 220, and it cost the company 158 billion rubles. PJSC "Yakutskenergo" (part of "RusHydro") in parallel built the approaches of power lines with voltage 2012 kV, 19 kV and 110 kV to the substation "Maya" and reconstructed the substation.
Yakut officials are confident that the connection "will significantly increase the reliability of electricity supply to consumers of all categories and the quality of electricity." The head of the republic, Aisen Nikolayev, called the commissioning of the power lines into operation "a historical event." “In case of emergencies at the facilities of YGRES or YGRES-2 or a change in the power consumption of power areas, some consumers can be supplied with power through the flow of power from the South Yakutia power district and the Amur power system,” says Alexei Kolodeznikov. “Large industrial consumers will appreciate the improvement in the quality indicators of electrical energy, which will have an effect on energy savings and increasing the productivity of the equipment.”
Vitaly Sungurov, General Director of the “ODU of the East”, agrees: “The fact that we have become rooted in Yakutia is a positive thing. The larger the power system, the more stable it is. For previously isolated areas, joining us is a step to increase the reliability by an order of magnitude ”. Joining, he recalls, was planned for another 2016-2017 years, but the government could not issue a decree that would connect the systems. “The lines were built, parallel included, conducted experiments, but it all stood in isolation. And January 2 was turned on, ”Vitaly Sungurov notes.
“The city of Yakutsk and part of the central group of districts use natural gas for power plants and district boiler houses, which is supplied on only three gas pipelines,” says. Head of the Department of "Electricity" Physical-Technical Institute of NEFU Pavel Vasilyev. - If it is hypothetical to assume that for any reason the gas supply stops, then all of central Yakutia will remain without electrical energy. Damage in this case will be enormous from all points of view. Therefore, the integration of power systems is a long-awaited and strategically very important event. ”
For improving the reliability of power supply in Yakutia, however, someone will have to pay. Population changes will not affect, says Pavel Vasilyev. “Tariff changes, according to the approved guidelines, will mainly affect large consumers. The tariff formula will consist of the following components: generation, transmission, sales of electricity and infrastructure payments. The indicative generation tariffs will be approved by the FAS, and the transmission and sales will be approved by the GCC REC, ”he says.
Yakutskenergo, with the inclusion of two Yakut energy districts in the non-price zone, began to buy energy on the wholesale market, where the cost of producing energy (power) “can change every hour,” confirms Alexey Kolodeznikov. The final tariff for electric power consumers in Yakutia is now formed monthly of the average monthly generation tariff for the wholesale market that has actually formed for the month, to which will be added the single tariff for transmission and sales margin of the guaranteeing supplier approved by the Republican Committee on Prices. “Along with the increase in energy security, in this issue there is a seasonality, and the so-called forced generation. In winter, when it is necessary to load thermal power plants that generate electricity and thermal energy in a combined mode, so that the city is supplied with heat in the required amount, the tariff may slightly increase. In summer, hydropower stations will be loaded as much as possible, ”the first deputy chairman of the Yakut government continues.
In the Yakutia pricing committee, EastRussia explained that the level of tariffs will be comparable to the base average Russia, which is approved by the Russian government for the regions. The established tariffs will hold out for another year and a half - until July 2020, then a “slight increase” is expected. Alexey Kolodeznikov notes that now consumers will have to plan their energy consumption more carefully: “Planning your hourly consumption is necessary in such a way as to achieve minimal deviation of the fact from the plan, since a significant deviation will lead to a significant increase in energy costs.” And in the case of competent planning, the official assures, enterprises will even be able to save on electricity.