title: ÐÐ¿ÑÐ¸Ð¼Ð¸Ð·Ð°ÑÐ¸Ñ ÑÐ°Ð±Ð¾ÑÑ ÑÐ¸ÑÑÐµÐ¼ Ð½Ð¾ÑÐ¼Ð°Ð»ÑÐ½Ð¾Ð¹ ÑÐºÑÐ¿Ð»ÑÐ°ÑÐ°ÑÐ¸Ð¸ ÐÐ­Ð¡ Ñ ÐÐÐ­Ð Ð² ÑÐµÐ¶Ð¸Ð¼Ðµ ÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ Ð·Ð° Ð½Ð°Ð³ÑÑÐ·ÐºÐ¾Ð¹
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° ÑÐ¿ÐµÑÐ¸Ð°Ð»Ð¸ÑÑÐ°
titleType: Subtitle
title: Optimization of the operation of systems for the normal operation of nuclear power plants with a VVER in the load following mode
Creators: name: ÐÐ»Ð°ÑÐµÐ½ÐºÐ¾, ÐÑÐ¸Ð½Ð°
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2025
Subjects: Ð²Ð²ÑÑ
ÑÐµÐ¶Ð¸Ð¼ ÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ Ð·Ð° Ð½Ð°Ð³ÑÑÐ·ÐºÐ¾Ð¹
Ð²Ð¾Ð´Ð½Ð¾-Ñ Ð¸Ð¼Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐµÐ¶Ð¸Ð¼
Ð´ÐµÐ°ÑÑÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÐºÐ¾Ð»Ð¾Ð½ÐºÐ°
Ð±Ð¾ÑÐ½Ð¾Ðµ ÑÐµÐ³ÑÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ
ÑÐµÐ¿Ð»Ð¾Ð³Ð¸Ð´ÑÐ°Ð²Ð»Ð¸ÑÐµÑÐºÐ¾Ðµ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ
ÐºÐ¾ÑÑÐ°Ñ
vver
load following mode
water-chemical regime
deaeration column
boron control
thermohydraulic modeling
korsar

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description: The relevance of the study is due to the need to increase the flexibility of op-eration of nuclear power units with VVER in the context of integration into power systems with a high proportion of unstable generations. The load following mode requires the adaptation of normal operation systems, including control of the water-chemical regime of the primary circuit and boron control, in order to minimize de-viations in the parameters of the coolant during power maneuvering. The purpose of the work is to optimize the functioning of the systems of nor-mal operation of nuclear power plants with VVER to ensure stable operation in maneuverable modes. To achieve the goal, the following tasks were set: analysis of the dynamics of the primary circuits VCR with a change in power; investigation of the effect of the operating modes of the deaeration column and boron control on the efficiency of coolant degassing; verification of the methodology for modeling thermohydraulic processes in the deaerator using RC (calculation code) KORSAR; development of recommendations for optimizing system parameters to maintain VCR. The object of the study is the systems of the first circuit of the VVER-1200 power units (LNPP-2, Paks-2 NPP). The methodology includes: a comparative analysis of the operational documentation and test results at LNPP-2; thermal and hydraulic modeling of the operation of the deaeration column in the KORSAR en-vironment; assessment of concentrations of non-condensing gases (NCG) in the coolant under different operating modes of the deaerator. The research results have shown that the transition of the make-up deaerator and boron control to the "cold" mode (without heating the medium) during ma-neuvering reduces the concentration of hydrogen in the coolant by 2 orders of magnitude compared with the "hot" mode, which helps to reduce the deviation of the normalized indicator from the values established by the standards of conducting HCR. The practical significance lies in the development of recommendations for op-timizing the operation of the deaeration column and boron control system in ma-neuverable modes, the implementation of which will reduce operating costs by sav-ing hydrogen gas and minimizing corrosion processes. The results can be applied to the modernization of nuclear power plants with VVER-1200 and the design of new power units. The study demonstrates the possibility of effective control of the primary cir-cuit VCR under variable load conditions by modifying the operating modes of the deaerator and boron system.