Discussion on the improvement of distribution net operation and maintenace 从配电架空线路发生故障的特点谈提高配网运行与维护水平
When this method is applied , net operation income ( noi ) and the value of capitalization rate ( ro ) are very subjective and difficult to estimate . this study intends to find a new method to decrease this subjective effective 本文以这一实际难题为背景,力求找到一种新的计算方法,能在很大程度上降低收益还原法评估结果的主观性,使评估结果更科学。
The operation and regulation is a weak link of heating engineering . essential reason is lie in the choice of controlled parameter that is very important in heating system , because controlled parameter relates to quality of heat net operation and regulation 供热系统的运行调节是供热工程的薄弱环节,根本原因在于供热系统中被控参数的选择,被控参数的选择在供热系统的运行调节中至关重要,它关系到热网运行调节的好坏。
Some net operations , such as addition , cartesian addition , cartesian production and general cartesian production of weighted net systems , were presented in some papers , and union operation , decomposition operations were given in others 已有文献提出了petri网的加法、笛加、笛积、广义笛加等运算并研究了一系列重要性质。另有文献定义了petri网的并运算、分解运算,讨论了这些运算保持网的结构性质和公平性的条件。
The system runs in groupware condition of lotus notes by clint / server mode . its net operation platform is windows nt server ( sp4 + option pack ) ? windows 2000 server , who can implement cooperation work among group through computer and communication net 系统以客户端/服务器模式运行于lotusnotes群件环境中,网络操作系统平台使用windowsntserver ( sp4 + optionpack ) 、 windows2000server ,利用计算机和通信网络实现群体之间的协同工作。
This system is utilized the programmable controller ( plc ) bearing of substitution rule ( the figure is apparent the form , writing instrument , individual loop controller , the hand is holded the utensil and is reached to assist the bearing unit and await ) , achieve the 29mw ' s cycle stream of water warmhearted water boiler , oxygen remover , warmhearted net system control system together with monitoring voluntarily of electric section together with control being living , the rule to call off greats quantity displays the bearing in that system , boiler , oxygen remover , the warmhearted net operation is achieved crt and is supervised completely , manipulates personnel staff is living inner place the control cabin completely completees failure - free operation and trouble removal operation . the predictive target of putting ino production queen is the boiler , oxygen remover , the warmhearted net is achieved comprehensive self - regulation , moreover be able to be over a long period of time , steady secure operation 本系统利用可编程控制器( plc )替代常规的仪表(数显表、记录仪、单回路控制器、手操器及辅助仪表装置等) ,实现29mw循环流化床热水锅炉、除氧器、热网系统控制系统与电气部分的自动监测与控制。在该系统中取消大量的常规显示仪表,锅炉、除氧器、热网的运行实现crt全面监控,操作人员在控制室内全部完成正常运行及事故处理操作。投产后的预期目标是锅炉、除氧器、热网实现全面自动调节,并能长期、稳定、安全运行。
The conditions for preserving structural and dynamic properties of the net after these operations were discussed . some net operations are further studied in this thesis . union operation is analyzed and one exampl e is given to make the background and meaning clearly for net decomposition operations 结合近年来petri网理论的发展,本文进一步研究了网运算,分析了并运算的代数性质;针对网的分解运算,给出实例显示了网的分解运算的背景及意义;同时讨论了网的并分解及和分解,研究了这些运算保持网的结构性质和动态性质的条件。
百科解释
In telecommunication, net operation is the operation of an organization of stations capable of direct communication on a common channel or frequency.