Why are Ukrainians being asked to reduce electricity consumption during peak hours? Because all those temporary solutions can’t hold under full load. This is the kind of damage that degrades its resilience. This is what lowers the stability of the Ukrainian power grid. It takes a separate project, developed for a couple of months – complex technological work that cannot be done quickly. It’s not something that can be manufactured beforehand and plugged in where needed. If these transformers are destroyed, it will take a long time to build new ones. When the transformer is knocked out, this means that plant cannot supply electricity to the grid. The city of Mykolaiv alone needs about 120 tons of technical oil, and without it, sometimes even barely damaged transformers cannot be repaired. It is now one of the scarcest commodities in Ukraine. Kharchenko: That’s the oil in the transformers burning. NV: CHP-5 in Kharkiv, and later CHP-6 Kyiv were attacked and black smoke appeared there. Read also: Russia destroys third of Ukraine’s power stations in a week – Zelenskyy Sometimes it takes up to six months to manufacture them. But there is still a category of very complex, expensive and special equipment – like the transformers. All the stockpiled gear available is used and everything that is possible to fix is fixed within 3-4 weeks. If some simple piece equipment is damaged, then this can be restored quite quickly. What is happening during that time? The power lines are being switched to backup ones. When there is an attack and some part of the country is left without electricity, usually the electricity comes back within an hour. But the transportation system is being knocked out step by step, and that’s a problem. We still have enough power generation – there’s still enough coal, nuclear and hydro generation capacity.
They are dangerous because transportation routes are disprupted, the ability to transport electricity to consumers is gone. Therefore, these attacks on transformer substations are very targeted and painful. They also attack thermal power plants in large cities, such as Kyiv, Dnipro, Kharkiv.Ĭombined heat and power (CHP) station is a facility that generates electricity and heat at the same time: heat for the winter season, and electricity to supply urban consumers. I’m sure that on the part of the Russians these attacks are clearly planned with the help of their engineers. For the most part, the nodes are transformer substations – lowering the voltage of incoming electrical power and distributing it to consumers.Ĭurrent, massive and very well-planned attacks are targeting these very network nodes. First are the power lines of different levels, and the second type are transformer substations – network nodes, essentially. Currently the attacks are mainly targeting the transportation system, which consists of two types of objects. One is to produce electricity, the other is to transport and distribute electricity. In order to provide the consumer with electricity, two processes are required. Let me try to explain what is happening from a technical point of view, but in simple terms.
Kharchenko: Old equipment was replaced, power lines were refurbished, new ones were built.
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