简介:Accordingtothecharacteristicsoftheprimarymaterialsofthebasiclandpriceinthelittletown,theauthorusestheanalysisfunctionofthefiguresandthespacetosetofftherankunit,calculatethenumberoftheunitandranktheland.Themethodandthesystemoftheevaluationofthebasiclandpriceinthelittletown(especiallythelittletownsintheWesternChina)willbeperfect.
简介:Basedonthecollectiondataoftheplants,waterquality,soilsofDianchiLake,andcombinedhighresolutionsatelliteremotesensingimages,thepaperanalyzedevolutionlawofDianchiLakewetland,andevaluatedthebenefitsofDianchiLakewetlandfromtheperspectiveofeconomy,environment,societyandzoology.Theresultsshowedthattheareaofwetlandandplantcommunityaccountfor92.2%inlakesidezone,theincreasewas141.4%comparedwiththevalueof2007.ThetotalvalueofevaluatedbenefitsofDianchiwetlandincreased3.439billionyuan,andecologicalenvironmentimprovedgradually.
简介:摘要:GIS设备局部放电现象的诊断与分析对于确保电力系统的稳定运行至关重要。局部放电虽不立即导致设备损坏,但长期存在会加速绝缘老化,引发故障。探讨了局部放电的产生机理及其对GIS设备性能的影响,重点介绍了基于电信号的检测技术,包括脉冲电流法和数字信号处理技术。通过信号的频率、幅度和时域特性分析,实现对局部放电源的精确定位和定量评估。本文还讨论了多物理量融合检测技术,强调了智能化诊断方法在提高检测准确性和效率方面的重要性。对局部放电诊断方法的应用效果进行了评估,展望了未来技术发展对电力系统安全稳定运行的积极影响。