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The reason for the blackout in the FEFD is the uncoordinated functioning of parts of the power system - EastRussia | Far East






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The cause of blackout in the Far Eastern Federal District is the uncoordinated functioning of parts of the power system

Rostekhnadzor on the basis of the investigation of the causes of the accident in the united energy system of the East named a number of its causes, but the only real reason was the uncoordinated functioning of the power system elements, the statement of JSC "System Operator UES" says.

"The act, which lists all six companies - the main participants in the events, dozens of signs of an accident, technical circumstances, organizational shortcomings, cases of failure to meet the dispatcher's command and the facts of improper equipment operation, design errors and violations of the requirements of regulatory legal acts, shows that the main The only reason for the incident was the uncoordinated functioning of the elements of the energy system. The same reason underlies the majority of system accidents, "the statement said. Among the main causes of the accident, specified in the act, unnecessary operation of relay protection devices, incorrect operation of automatic control systems for generating equipment, shortcomings of the algorithm used by the developer for the operation of emergency control automatics in the network of 220 kV, and the disadvantages of operating electric grid equipment appear.

To ensure the coordinated functioning of the elements, it is necessary to create regulatory regulations for technological activities through the establishment of a transparent, technically correct system of compulsory requirements for the elements of the energy system and the actions of the industry entities to ensure their joint functioning, the operator states. As noted, most system accidents in the power system in recent years could be avoided if there are mandatory requirements in the legislation for consumers, generators, networks.

The large-scale failure in the power system of the Far Eastern Federal District occurred on 1 August, when the 500 kV HVL "Bureyskaya HPP - Amurskaya", the first circuit of the 500 kV "Bureyskaya HPP - Khabarovskaya" and the Amur-Heihe TL (in the PRC) were disconnected by the protection. As a result, hydroelectric units N 1, 2, 3, 4, 6 (according to 335 MW) were disconnected at the Bureyskaya HPP. In addition, the load of Blagoveshchenskaya CHPP was reduced to zero. Zeyskaya HPP reduced the load from 500 MW to 240 MW. At the same time, hydroelectric power generators with power of 225 and 215 MW, respectively, were disabled by HPP personnel. It was also reported that the fifth block of the Primorskaya GRES was disconnected as a result of the accident, as a result of which the station reduced the load for 210 MW, and the third power unit was shut down at Neryungrinskaya GRES (by protection, the station reduced its working capacity by 180 MW). In general, the power of disconnected consumers was 1,25 thousand MW.