小電流接地故障選線(xiàn)算法有效性研究及實(shí)現(xiàn)

1、華北電力人學(xué)碩十學(xué)位論文摘要本文從大量現(xiàn)場(chǎng)錄波數(shù)據(jù)提取選線(xiàn)算法的故障特征量，并利用自適應(yīng)神經(jīng)模糊系統(tǒng)確定其和有效性之間的函數(shù)關(guān)系，在此基礎(chǔ)上形成證據(jù)理論綜合評(píng)價(jià)系統(tǒng)應(yīng)用于小電流接地系統(tǒng)故障選線(xiàn)。分析鐵磁諧振及消弧線(xiàn)圈串聯(lián)諧振引起的虛幻接地現(xiàn)象，并提出識(shí)別及抑制諧振的方法。在前述理論基礎(chǔ)上，設(shè)計(jì)基于A(yíng)RM技術(shù)的選線(xiàn)裝置，包括硬件結(jié)構(gòu)和軟件算法?，F(xiàn)場(chǎng)算例表明，基于A(yíng)RM技術(shù)的小電流故障選線(xiàn)裝置為故障選線(xiàn)算法的實(shí)現(xiàn)提供了良好的硬件平臺(tái)，結(jié)合軟

2、件算法中的虛幻接地識(shí)別模塊和綜合選線(xiàn)技術(shù)，能夠排除干擾，充分利用各種選線(xiàn)方法的互補(bǔ)性，自動(dòng)適應(yīng)于各種單相接地故障情況，選線(xiàn)可靠。關(guān)鍵詞:故障選線(xiàn)，有效性，ANFIS，虛幻接地，ARMABSTRACTInthePaperANFIS15introdueedtodefinitethefunetionbetweenfaultfeaturesextractedfromlargenumbersofloealdataandvalidityofmeth

3、ods.Andtheintegratederiterion15fmedbyevideneetheo叮infaultlinedeteetiononthebase.ThevisionallygroundingPhenomenoneausedbyferromagnetieresonaneeandextinetioneoilseriesresonanee15analysedtheidentifyinginhibitingmethdsarePre

4、fmed.ThehardwaresoftwareofthefaultlinedeteetiondevieebasedonARM15designed.TheoPerationresultsshowthatthisPlatfmhasgoodrunningstability，highadaptabilityfaultdetection15fastandreliablebeeauseoftheadvantagesofARMandtheinteg

5、ratedcriterion，whichmaybeeomeanidealearth一faultdeteetionPlatfmfitsbetterPerfmanee一Prieeratio.DongDi(EleetriePowerSystemAutomation)DireetedbyProf.YangYihanKEYWORDS:幾u(yù)ltlinedeteetion，validityofmethods，ANFIS，visionallygroun

6、ding，ARM華北電力大學(xué)碩十學(xué)位論文3.2.1機(jī)理分析......................................……253.2.2消弧線(xiàn)圈串聯(lián)諧振識(shí)別技術(shù).......................……273.2.3消弧線(xiàn)圈串聯(lián)諧振的抑制措施.....................……293.3小結(jié)........……，.................................……29第四章基于A(yíng)RM技

7、術(shù)的小電流接地故障選線(xiàn)裝置.，.…，，，…，.，....……304.1嵌入式微處理器概述..................................……304.1.1LPC2214的硬件資源.............................……304.1.2LPC2214的軟件資源.............................……304.2小電流選線(xiàn)裝置的硬件設(shè)計(jì).......................

8、.....……314.2.1裝置硬件總體結(jié)構(gòu)...............................……314.2.2主板的硬件實(shí)現(xiàn)方案……，.....................……314.2.3高速數(shù)據(jù)采集模塊...............................……324.2.4存儲(chǔ)器擴(kuò)展模塊.................................……324.2.5數(shù)據(jù)處理及故障判斷模塊........

9、.................……334.2.6數(shù)字量控制模塊.................................……334.2.7異步串行通信模塊...............................……334.3小電流選線(xiàn)裝置的軟件設(shè)計(jì)............................……334.3.1ARM集成開(kāi)發(fā)環(huán)境ADS1.2......................……344.3.2軟件的總

10、體結(jié)構(gòu).................................……354.3.3初始化模塊.....................................……364.3.4任務(wù)管理模塊...................................……364.3.5計(jì)算判斷模塊...................................……374.4裝置的抗干擾設(shè)計(jì)..................

11、.................……384.4.1硬件抗干擾技術(shù).................................……384.4.2軟件抗干擾技術(shù)............................……，…，394.5小結(jié)...............................................……40第五章算例分析........................................

12、.......……41第六章結(jié)論....................................……45參考文獻(xiàn)......................................................……47致謝..............................................……，.……50在學(xué)期間發(fā)表的學(xué)術(shù)論文和參加科研情況..........................……