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Study and practice on the construction of high-reliability distribution network of urban demonstration in Chongqing

机译：重庆市城市示范高可靠性配电网建设的研究与实践

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Power supply reliability means the power system's ability of sustainable power supply, which is a main index in evaluating the quality of power supply system. In order to improve the reliability of urban distribution network and quality of service, Chongqing Power Corporation made urban core area of 31.5 square kilometers as demonstration area on power supply high-reliability, with the acceptance of the State Grid Corporation in 2013. The average interruption duration is reduced lower than five minutes, which reached the international advanced level. The construction of this demonstration area mainly include reliability evaluation on distribution grid, reliability planning on grid structure, cable non-blackout work, reconstruction on distribution grid, risk analysis on distribution grid operation, production and command platform construction, condition-based maintenance technology, construction of standard operation and management system on regional distribution with high reliability, etc‥ Remote loop closing operation is achieved by data interaction between distribution automation system and the loop closing operation device. Through the information exchange bus, distribution automation system, production management system (PMS), 95598 system, geographic information system (GIS), reliability risk assessment system, online-monitoring system and condition-based maintenance system are integrated together. By using PMS mobile operating platform to process work orders, the efficiency of rushing repair is improved significantly. With the widely application of infrared radiation thermometer and Oscillation Wave Test System (OWTS), not only Condition-based maintenance of distribution network equipment is carried out, but the process of distribution grid maintenance and recovery can be monitored. After the construction of high reliability demonstration area, the average shut down time decreased from 33 min. to 4.557 min., the reliability index (RS-3) increased fro- 99.96% to 99.9915%, and service quality on power supply and customers' satisfaction also increased significantly, and consequently good society and commercial benefit were made.
机译：供电可靠性是指电力系统可持续供电的能力，是评估供电系统质量的主要指标。为了提高城市配电网的可靠性和服务质量，重庆电力公司于2013年获得国家电网公司的认可，将城市核心区域31.5平方公里作为电力高可靠性示范区。持续时间减少到不到五分钟，达到了国际先进水平。该示范区的建设主要包括配电网的可靠性评估，配电网结构的可靠性规划，电缆非停电工作，配电网的改造，配电网运行的风险分析，生产和指挥平台的建设，基于状态的维护技术，可靠性高的区域配电标准运行管理系统的构建等。‥配电自动化系统与闭环运行装置之间的数据交互，实现了远程闭环运行。通过信息交换总线，将配电自动化系统，生产管理系统（PMS），95598系统，地理信息系统（GIS），可靠性风险评估系统，在线监视系统和基于状态的维护系统集成在一起。通过使用PMS移动操作平台处理工单，大大提高了抢修效率。随着红外辐射温度计和振荡波测试系统（OWTS）的广泛应用，不仅可以对配电网设备进行基于状态的维护，而且可以监视配电网的维护和恢复过程。高可靠性示范区建成后，平均关机时间从33分钟减少。到4.557分钟，可靠性指数（RS-3）从99.96％提高到了99.9915％，供电质量和客户满意度方面的服务质量也显着提高，从而取得了良好的社会效益和商业效益。

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