【摘要】：核電站保護(hù)系統(tǒng)根據(jù)實(shí)際運(yùn)行參數(shù)的變化,通過控制反應(yīng)堆緊急停堆和專設(shè)安全設(shè)施,防止反應(yīng)堆超過規(guī)定的安全極限或減輕事故所造成的后果。按照核安全法規(guī)要求,核電站保護(hù)系統(tǒng)必須進(jìn)行周期試驗(yàn),以驗(yàn)證其功能和性能是否滿足可靠性的設(shè)計要求。但目前用于核電站保護(hù)系統(tǒng)T1試驗(yàn)的信號交叉比較算法存在不足,該算法無法判定保護(hù)系統(tǒng)冗余通道是否存在“4通道同向漂移”。在對T1試驗(yàn)詳細(xì)研究的基礎(chǔ)上,本文以T1試驗(yàn)的信號交叉比較算法為研究對象,詳細(xì)論述了該算法數(shù)學(xué)建模與求解過程,并在原有數(shù)學(xué)模型上提出改進(jìn)方法。改進(jìn)的算法實(shí)現(xiàn)了 “4通道同向漂移”的判定功能,具有一定工程價值。主要工作成果如下:(1)閱讀核電站保護(hù)系統(tǒng)T1試驗(yàn)的大量相關(guān)資料,基于原有信號交叉比較算法的數(shù)學(xué)模型,提出該算法的不足之處。同時提出“設(shè)定基準(zhǔn)通道”和“4通道同向漂移”判定公式來實(shí)現(xiàn)改進(jìn),并利用C#3.0語言實(shí)現(xiàn)改進(jìn)算法的程序設(shè)計。(2)依托中廣核設(shè)計院驗(yàn)證平臺,設(shè)計出T1試驗(yàn)的實(shí)現(xiàn)過程。通過PCTRAN軟件實(shí)現(xiàn)實(shí)時數(shù)據(jù)采集。同時依據(jù)核安全重要儀表精度準(zhǔn)則,設(shè)計出數(shù)學(xué)模型中的標(biāo)準(zhǔn)偏差值。(3)完成T1試驗(yàn),并對數(shù)據(jù)結(jié)果做出分析。試驗(yàn)結(jié)果表明:改進(jìn)的算法不僅滿足原有功能,同時可對“4通道同向漂移”進(jìn)行判定,具有可行性。
[Abstract]:According to the change of actual operation parameters, the nuclear power plant protection system can prevent the reactor from exceeding the prescribed safety limit or reduce the consequences of the accident by controlling the reactor emergency shutdown and special safety facilities. According to the requirements of nuclear safety regulations, nuclear power plant protection system must be tested periodically to verify that its function and performance meet the design requirements of reliability. However, the current signal cross-comparison algorithm used in the T1 test of nuclear power plant protection system is insufficient, and the algorithm can not determine whether the redundant channel of the protection system exists "4-channel codirectional drift". Based on the detailed study of T1 test, this paper takes the signal cross-comparison algorithm of T1 test as the research object, discusses in detail the mathematical modeling and solving process of the algorithm, and puts forward an improved method on the original mathematical model. The improved algorithm realizes the judgment function of "4 channel codirectional drift", and has certain engineering value. The main results are as follows: (1) based on the mathematical model of the original signal cross-comparison algorithm, the shortcomings of this algorithm are proposed by reading a large number of relevant data from the T1 test of the nuclear power plant protection system. At the same time, the determination formulas of "setting datum channel" and "4-channel codirectional drift" are put forward to realize the improvement, and the program design of the improved algorithm is realized by using C#3.0 language. (2) based on the verification platform of Zhongguang Nuclear Design Institute, the implementation process of T1 test is designed. Real-time data acquisition is realized by PCTRAN software. At the same time, according to the precision criterion of nuclear safety important instrument, the standard deviation value in mathematical model is designed. (3) the T1 test is completed, and the data result is analyzed. The experimental results show that the improved algorithm not only meets the original function, but also can be used to judge the "four channels in the same direction", which is feasible.
【學(xué)位授予單位】：哈爾濱工程大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TM623

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