With the development of urban economy and reconstruction of power system network , distribution system is required to be layout scientifically and rationally . at the same time with the development and deepening of the management of electric power company , the operation of electric power law and the promises system of electric service , the reliability of electric supply plays a more and more important part in the processing and management of power system 城市经济的迅速发展和城网改造的开展，迫切要求对配电网进行科学、合理的规划，同时随着电力企业管理工作的开展和深化，以及《电力法》的实施和电力服务承诺制的开展，供电可靠性在生产和管理工作中所占的位置也越来越重要。
Based on the distribution geography information system , we compose the supervising and scheduling system of electrical repairing connecting with css , dms , scada , etc . it analyses the locale data and other system data entirely , adopts assistant wisdom decision - making technology and realizes tracking , supervising , seeking help and rush repair scheduling , etc for electrical repair vehicle . 3 实施本系统以后，不仅实现了对事故处理全过程的监控和指挥，健全了抢修指挥体系，而且有效地实现了抢修人员，车辆，信息等资源的共享和充分利用，可大大缩短抢修时间，保证抢修质量，提高供电可靠性增加社会和经济效益。
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。
This paper analyzes and compares between the external power source supply methods adopted in chinese subway system from six aspects , including the reliability and quality of power supply system , the working management and the project investment etc . . then the author comes to the conclusion that the concentrated method is better than the separate method in terms of external power source supply 摘要针对我国目前地铁供电系统所采用的外部电源供电方式，从供电质量、供电可靠性、运营管理以及工程投资等六个方面进行了分析和比较，并得出集中供电方式优于分散供电方式的结论。
A few stations are combined into a supervisory and control group by handy communication way , the system realizes remote signalling , remote measuring and remote controlling . as a control unit of the upper supervisory and control system , it improves safety and reliability of city low voltage electric fence effectively 该系统利用方便的通讯方式将多个配电所组合成一个监控群，实现对多个配电所的遥信、遥测和遥控；并作为上层监控系统的一个控制点，有效地提高城市低压电网安全运行水平和供电可靠性。
Through lots of experiments of simulation and dynamic simulation , we draw a conclusion that this system owns an excellent foreground . backup protection of system protection is discussed . when main protection does not work , backup protection can cut - off fault within a limit time all the same , which improves electric reliability 详细介绍了系统保护的后备保护，系统保护的后备保护充分借鉴了系统保护的原理，在牺牲部分选择性的同时，仍然可以以较快的速度切除故障，并将故障隔离在最小范围内，进一步增强了供电可靠性。
On the other hand , because development of regional economic is n ' t balance , different users have different demands on power and different reliability . it is n ' t true that all users use one - class reliability . this paper points out priority pricing model based on different users 另外，我国地区经济发展不平衡，并且电力资源短缺，资金匮乏，不同的用户对电力的需求不同，缺电损失也不同，不应对所有用户实行一个平均的、较高等级的可靠性，因此制定电价应考虑用户对供电可靠性的要求，根据不同的可靠性等级，制定不同的分级电价。
By way of analyzing the major safety elements of influencing the people with electricity jobs , and the major elements of influencing the power supply reliability , integrating with practice of zhuzhou chemical industry group corporation , we take measures of safety goal management , and intensify education and cultivation , and take safety technical step , and intensify safety inspection effect 从对影响电气从业人员的安全因素和对影响供电可靠性的主要因素的分析入手，结合株洲化工集团公司的实际，采取安全管理目标管理、强化教育培训、组织实施安全技术措施、强化安全检查力度和效果等方面的措施。
