OPTIMAL LOAD-FOLLOWING NUCLEAR REACTOR POWER CONTROL DURING THE THREATENED PERIOD OF EXTREME EXTERNAL EFFECTS

The article considers a variant of circumstances under which a nuclear power plant operating in a variable daily load schedule receives a signal about the likely onset of extreme external influences in the near future, which will force the shutdown of the reactors. At the same time, the plant personnel is authorized to establish the mode in which the reactors will operate during the threat period until it is realized or canceled. A two-level daily graph of the change in the power of a nuclear reactor is given. It is believed that a threat warning is received at the beginning of the period, then, for the period of the threat of extreme external influences, the reactor power is set constant at a level between day and night regimes. The problem of finding the optimal power level was posed and solved, while the loss function is calculated as the total economic damage weighted by the probabilities of the implementation and cancellation of the threat: due to deviation from the consumption schedule in the event of a false alarm; due to downtime in the iodine pit in the event of a real threat. The results of the work allow us to draw the following conclusion: with an increase in the probability of a threat, the optimization effect increases, therefore, the power mode should be changed to the appropriate level 𝛼. Estimates of the optimization effect are given.

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