Selecting the way to maintain equipment , cutting into the cost to maintain equipment , changing the interval between two time - based maintenance reasonably are currently investigated worldly 选择设备的检修方式、降低设备的维护费用、合理改变定期检修的时间间隔是目前比较热门的问题。
Waterpower is distributed all over the world , hydraulic turbines of power stations are subjected to destruction due to serious cavitation and wear , so that they need to be overhauled regularly to ensure normal running of the power stations 水力发电遍布全世界，水电站中所使用的水轮机存在严重的汽蚀、磨损，需要定期检修，以确保水电站正常运行。
Abstract : in view of the disadvantages of the commonly used prophylactic repair mode for such power equipments as generators and transformers , the significance of developing state monitoring and fault diagnosis technique is analyzed , and the state ? of ? the ? art and existing problems of the technique are described 摘要：针对发电机、变压器类电力设备普遍采用的预防性定期检修方式所存在的弊端，分析了发展状态监测和故障诊断技术的意义，并对该技术在国内外的发展现状和存在问题进行了介绍。
Companies must first decide what types of service customers might want , ranging from basic , such as installation , training , spare parts and call - center support ; to more ambitious , such as field service , depot repair , and systems integration ; to high - value risk reduction , such as preventive maintenance , or running an operation for the customer 首先必须确定客户需要何种服务：是基础服务，如安装、培训、备用零件和呼叫中心支持；复杂服务，如现场服务、返库维修和系统集成；还是高附加值的风险控制，如定期检修或代客户管理企业。
On - line monitoring of hvcb is the precondition of predicting maintenance , is the key element of reliable run , and is the important supplement to the traditional off - line preventive maintenance in fact , the faults are made by hvcb , no matter in number or in times , is over 60 % of total faults so it has determinative importance for improving the reliability of power supply and this can greatly decrease the capital waste used by - dating overhaul in this paper , the inspecting way of hvcb mechanism characteristic is discussed the concept of sub - circuit protector is presented , the scheme that we offered has been combined with sub - circuit integrality monitoring theory , to ensure that it has the two functions as a whole according the shut - off times at rated short circuit given by hvcb manufacturer , the electricity longevity loss can be calculated in each operation , and the remained longevity can be forecast too an indirect way for calculating main touch ' s temperature by using breaker shell temperature , air circumference temperature and breaker ' s heat resistance is improved in this paper , and main touch resistance can be calculated if providing the load current msp430 , a new single chip microcomputer made by ti company , is engaged to develop the hardware system of the on - line monitoring device , and special problem brought by the lower supply voltage range of this chip is considered fully 高压断路器所造成的事故无论是在次数，还是在事故所造成的停电时间上都占据总量60以上。因此，及时了解断路器的工作状态对提高供电可靠性有决定性意义；并可以大大减少盲目定期检修带来的资金浪费。本文论述了断路器机械特性参数监测方法；提出了二次回路保护器的概念，并将跳、合闸线圈完整性监视和二次回路保护结合起来，给出具有完整性监视功能的二次回路保护器实现方案；根据断路器生产厂家提供的断路器额定短路电流分断次数，计算每次分闸对应的触头电寿命损耗，预测触头电寿命；提出根据断路器壳体温度和断路器周围空气温度结合断路器热阻来计算断路器主触头稳态温升的方法，并根据此时的负荷电流间接计算主触头回路的电阻；在硬件电路设计上，采用美国ti公司最新推出的一种功能强大的单片机msp430 ，并充分考虑该芯片的适用电压范围给设计带来的特殊问题；在通信模块的设计中，解决了不同工作电压芯片之间的接口问题，并给出了直接联接的接线方案。
Organisation audit : it reviews the content and frequency of the preventive maintenance , the response time to failures , the reporting , the escalation procedures , the follow up of the issues , the structure of the maintenance organization , the spare part management , the adaptation of the maintenance to the machine specificities and history 系统核查：审核定期检修的内容和频率、故障反应时间、报告、扩张程序、事项的跟踪、检修程序的结构、备件的管理、检修是否与机器的性能和历史相符合。
For complicated machinery equipments as turbo - generating units in power station , optimized and combined maintenance methods shall be taken when executing conditions maintenance of different equipments in order to improve the reliability of equipments and reduce the cost in generating electricity . condition maintenance cannot take place of regular maintenance at present , but the proportion of it is increasing gradually on the basis of regular maintenance 对于电厂的汽轮发电机组这类复杂的机械设备系统，实施设备状态检修是要根据不同设备的重要性、可控性和可维修性，科学合理地选择不同的检修方式，形成一套融定期检修、状态检修和主动检修为一体的、优化的综合检修方式，以提高设备可靠性、降低发电成本。
Because the monitoring of electricity equipment is still in the condition of traditional prophylactic test ( monitoring off line ) , wordage list and management method of handwork operation , to strengthen the real - time monitoring of the operation state of electricity equipment ( monitoring on line ) , find out the anomaly of equipment , monitor and analysis the fault , then take a corresponding measures to lower the fault loss so that we can make the transition between the regulations of periodic repairing equipment and the regulations of reasonable state repair , is the work which the department of power supply and operation make much of 针对对现有电气设备的监测大都还处于传统的预防性试验（离线监测） 、文字报表、手工操作的管理方式的现状，加强对电力设备的运行状态进行实时的监测（在线监测） ，及时发现设备的异常征兆、对故障进行诊断分析，并采取相应措施，把故障损失降低到最低水平，进而将目前实行的设备定期检修制过渡到更为合理的状态检修制，一直是供电和运行部门十分重视的工作。
