電網(wǎng)地磁感應電流監(jiān)測預警系統(tǒng)研究

1、華北電力大學（北京）碩士學位論文電網(wǎng)地磁感應電流監(jiān)測預警系統(tǒng)研究姓名：張清明申請學位級別：碩士專業(yè)：電力系統(tǒng)及其自動化指導教師：劉連光20050101華北電力大學碩士學位論文摘要地磁暴在高壓電網(wǎng)中產(chǎn)生的地磁感應電流(GeomagnetiClnducedCUrr(、nt，簡稱GIC)對電力系統(tǒng)運行有一系列有害影響。近年，在我國眭距離輸電系統(tǒng)中已經(jīng)發(fā)現(xiàn)很多GIC造成的影響案例；因此，研究我國電網(wǎng)的GIc問題有重要意義。本論文則主要研究電網(wǎng)G

2、IC監(jiān)刪技術(shù)，監(jiān)測結(jié)果是分析影響、危害的基本依據(jù)。論文結(jié)合我國現(xiàn)代大電網(wǎng)發(fā)展，分析了GIC對我國電網(wǎng)的可能影響，論證了在我國電網(wǎng)建立GIC監(jiān)測預警系統(tǒng)的必要性；根據(jù)電網(wǎng)GIC產(chǎn)生機理及其特性，提出了兩種不同的GIC信號提取方案，并通過仿真分析給出了GIG信號的分析算法；完成了電網(wǎng)GIC監(jiān)測預警系統(tǒng)軟硬件設(shè)計，解決了監(jiān)測裝置研制中的GIC信號提取方法、錄波方法等問題。研究表明，提出的GIC信號提取方法和分析算法是可行的。關(guān)鍵詞：地磁感應電

3、流，GIc影響，監(jiān)測預警，信號處理ABSTRACTGeomagneticstornlispossibletoinducegeomagnetieallyinducedcurrent(GIC)andmanyilleffectsinhi曲voltagepowergridInthepastfewyears，manydisturbancesproducedbyGIChavebeenfoundinourcountry’Spowergrid，SOit

4、isofgreatimportancetesearchtheGICinthegridThispapermainlystudytheGIC—monitoringtechnologNforthemonitorresultsisthebasistoanalyzeGIC’sinfluenceandilleffectsonthepowergridConsideringthedevelopmentofourcountry’Spowergrid，th

5、epaperafialyzedtheGIC’spossiblein—effectsonthegrid，whichimprovedthatitisessentialtoestablishGICmonitoringandprealarmingsysteminourcountryTwodifferentGICabstractingmethodsareputolltbased0ntheGIC’Sformationmechanismanditsc

6、haracteristicandthearithmetictoanalyzeGICispresentedthroughsimulationThesoftwareandhardwaredesignoftheGICmonitoringandpre—alarmingsystemisaccomplished，andthekeyproblemsintheprogramming，suchastheGICsignalabstraction，sampl

7、e，andanalysis，powerequipments’operationparametersrecordingwhenGICisabnormal，isresolvedTheresearchprovedthatthesignal—abstractingmethodsandarithmeticisteasibleKEYWORDS：geomagneticinducedcurrent(GIC)，theiileffectsofGIC，mea