Open AccessResearch on Probability Model of Non-independent Fault of Nuclear Power Units Based on Power Grid Operating Parameters
Author(s) -
Xiaoming Wang,
Huang Dong-shan,
Bin Wang,
Xiangyu Lin
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/332/4/042039
Subject(s) - reliability engineering , nuclear power , fault (geology) , grid , reliability (semiconductor) , power (physics) , computer science , nuclear power plant , engineering , mathematics , physics , geometry , quantum mechanics , seismology , nuclear physics , geology
Nuclear power plants have the characteristics of high safety and reliability requirements, unlike the conventional thermal power plants adopting an independent fault probability model, the probability of its fault is closely related to the operation status of the power grid. To solve this problem, a non-independent fault probability model of nuclear power plants considering power grid operation parameters is proposed in this paper. This research firstly simulates N-1 fault scenarios of each power component in the grid, then the influences of the fault scenarios on the voltage and frequency of nuclear power plants access point are simulated through the power system analysis software tools (PSD-BPA), the possibility of its outage is determined according to the corresponding protection thresholds of nuclear power plants, and then the occurrence probabilities of these fault scenarios are taken into account, finally the non-independent fault probability of nuclear power plants which is relevant with power grid operation parameters will be obtained. The model lays the foundation for the evaluation of the operational reliability and risk of power grid with nuclear power plants accessed to.