Reliability simulation method for large-scale power supply system under periodic maintenance condition
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A technology for regular maintenance and power supply systems, applied in the fields of electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as large amount of calculation, difficult engineering application, and low calculation efficiency
Active Publication Date: 2019-12-03
CHINA ELECTRONICS TECH GRP CORP NO 14 RES INST
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[0007]
Aiming at the shortcomings of the existing large-scale regular maintenance voting system reliability index calculation method, which are large amount of calculation, low calculation efficiency, and difficult for engineering application, the present invention proposes a large-scale periodic maintenance voting redundant system reliability index simulation calculation method
The invention mainly solves the problem of calculating the reliability index of the large-scale voting redundant power supply system under the condition of regular maintenance, the service life of each parallel unit is not limited to the exponential distribution type, and is aimed at two situations of unlimited periodic maintenance and limited periodic maintenance , the distribution proposed a reliability index simulation calculation method
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Embodiment 1
[0060] Embodiment 1: (large-scale power supply system under the condition of unlimited regular maintenance)
[0061] 1) According to the specific problem, extract the basic parameters of the voting system, including the total number of units n = 2000, the minimum number of units to maintain system function m = 1800, the unit life obeys the exponential distribution and the failure rate λ 0 = 0.0001, periodic maintenance period T = 700 hours; repair rate PRR = 0.98.
[0062] 2) Determine the simulation times N=1000, the output variables of each simulation result (including: system life vector life, maintenance times vector k_jx); make the current simulation times w=1;
[0063] 3) Start the w-th simulation calculation, and call the relevant simulation parameters;
[0064] 4) According to the distribution type of unit life and its parameters (see step 1), generate a random number matrix R, each column corresponds to n random numbers, take the data in the first column as the unit ...
Embodiment 2
[0075] Embodiment 2: (large-scale power supply system under the condition of limited periodic maintenance)
[0076] 1) Extract the basic parameters of the voting system, including the total number of units n = 2000, the minimum number of units m = 1800 to maintain the system function, the unit life obeys the exponential distribution and the failure rate λ 0 = 0.0001, periodical maintenance period T = 700 hours; repair rate PRR = 0.98, maximum number of maintenance times k_jxMax = 2;
[0077] 2) Other steps are carried out in accordance with the steps in the specific plan: "b. Calculation method of reliability index of large-scale power supply system under the condition of limited periodic maintenance";
[0078] 3) Calculate the average value of the system life vector life, namely: MTBCF=3305; calculate the average maintenance times, k_jx_avg=2.33;
[0079] 4) According to the system life vector life, the estimated curves of the system unreliability F(t) and reliability R(t) f...
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Abstract
The invention discloses a reliability simulation method for a large-scale power supply system under a periodic maintenance condition. The method comprises two situations: the first situation is a large-scale power supply system under the condition of infinite regular maintenance, i.e., the maintenance frequency is not limited, and as long as the time reaches the maintenance period and the system function is determined to be normal, the failed unit is continuously maintained, so that the functions of each unit of the system are recovered to be normal until the system is failed before reaching the next maintenance moment. And the second situation is that the large-scale power supply system is maintained under the condition of limited times of regular maintenance, that is, the maximum maintenance frequency is set, and when the maintenance frequency exceeds the maximum maintenance frequency, the maintenance is not continued until the voting system fails. Reliability indexes of the voting redundant power supply system under the conditions of infinite regular maintenance and finite regular maintenance can be respectively calculated through a calculation process and calculation; wherein the reliability comprises reliability, unreliability and MTBCF, and certainly, under the condition of obtaining an unreliability function of the system, a failure density function and a failure rate function of the periodic maintenance voting system can be approximately obtained according to a related calculation formula in a reliability theory.
Description
technical field [0001] The invention relates to a reliability simulation method of a power supply system, in particular to a reliability simulation method of a large-scale power supply system under the condition of regular maintenance. Background technique [0002] With the increase of the scale of the radar front, the radar power supply system develops towards a distributed and hybrid power supply architecture. Since the radar power supply system includes multiple subsystems, and each subsystem contains many units, especially the number of radar front power supplies is large It brings a lot of calculation difficulties for reliability design and analysis. In order to improve the overall reliability of the radar system, during the demonstration of the radar scheme, the voting redundancy system is usually used to improve the reliability index of the system. In order to be consistent with the actual working conditions, the task reliability of the system or the mean time between...
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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G06Q10/00
CPCG06Q10/20Y04S10/50
Inventor 孙勇季少卫
Owner CHINA ELECTRONICS TECH GRP CORP NO 14 RES INST
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