煤矿井下127V照明线路保护整定的计算方法-王惠东

127V232082127V、、。127V。TD623B1001－0874201105－0074－02ResearchonCoalMine127VIlluminatingLineProtectionSettingCalculationWANGHui-dongPanyiMineHuainanMiningGroupCo．Ltd．Huainan232082ChinaAbstractInviewofthephenomenasuchaseasytocatchfireandcarbonizedspontaneouscombustionof127Villuminatinglineatundergroundcoalminethemajorityminepitstothe127Villuminatinglinesynthesisprotectortwosidesprotectivetube＇schoicethelineelectriccablesectionandtheprotectiondistancearebeingtakenseriously．Theprotectioninstallationcomputationalmethodsof127Villuminatinglineareintroducedandthesolutionmeasuresofoverelectricallongestprotectiondistanceareproposed．Keywordsprotectivetubeelectriccablesectionprotectiondistancesettingcalculation0、127V、。127V。1127V1．1。1IE=PX．max/1．732×Ue×cosΦ=PX．max/1．732×133×0．61IE———APX．max———WUe———Ue=133VcosΦ=0．6。127V1。1127V/mm2/A11412111．521181822622222．5302525441353565345451．2、。2。·47·20115IR≥IE2IR—IE———。1．33Id2/IR≥432。2127V/A/A/mm2/A3121．5133．75151．5135202．5256242．52510402．52515602．52520802．525251002．525351404361．41．4．11Ue=133V21．5mm217．8Ω/km32．5mm210．42Ω/km44mm26．36Ω/km50．081Ω/km6R=0．1068ΩX=0．1676Ω7。1．4．2443。44mm24mm2。LH=L1K1+L2K2+…+LNKN43/A/W/mm2/m34141．530048403．755181．52384665520690449161982944047．5181036431710171382423011161520420612151658418615142072414320132764410025123455473LH———mL1、L2、LN———mK1、K2、KN———4。4/mm21．52．542．81．6411．5。。2127V。、。、。1981－。20044。2011－04－08檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿73、、。1GB3836．2-20002“d”S．1973－。1998101。2011－05－15·57·20115