And adopting okumura - hata model to wireless links circuit calculation , and to forecast wireless overlay strong field 并采用okumura - hata模型進(jìn)行無線鏈路計(jì)算,對無線強(qiáng)場覆蓋進(jìn)行預(yù)測。
In the project of local power network short - circuit calculation , protection coupling and archive management , a second - exploitation of autocad is used to get an expected graphics system 在“地區(qū)電網(wǎng)短路計(jì)算、保護(hù)整定及檔案管理程序的研究”項(xiàng)目中,采用對autocad進(jìn)行二次開發(fā)來獲得所需要的圖形系統(tǒng)。
Low and medium voltage power distribution systems , lighting , ups , afd application , short circuit calculation and protective device coordination , fire alarm systems , telephone systems , hazardous material monitoring and alarm systems 中、低壓配電系統(tǒng),照明, ups ,變頻器應(yīng)用,短路計(jì)算,保護(hù)裝置協(xié)調(diào),消防報警系統(tǒng),電話系統(tǒng),危險材料監(jiān)控和報警系統(tǒng)。
A short circuit calculation software has been developed by setting up visual mathematic model of power network , providing the criterion of the choosing of the equipments under high - handed electricity power transmission and distribution for ptcad2000 通過建立可視化的電網(wǎng)數(shù)學(xué)模型,程序?qū)崿F(xiàn)了電力系統(tǒng)下短路故障的計(jì)算和分析,為在ptcad2000平臺下高壓輸配電網(wǎng)的設(shè)備選型提供了依據(jù)。