The ceaseless rising of voltage grade and the increasing capacity of electric power in the power system are putting forward higher requirements to the power transformer. 电力系统的电压等级不断提高，传输的电力容量也越来越大，这对电力互感器提出了更高的要求。
The monitoring and control area of power grid has extended from power substation and high-medium voltage distribution lines to low voltage customers. The traditional data acquisition and management of distribution network increasing unable to meet the requirements, distribution system automation has become an inevitable trend. 电网监测和控制范围逐渐从变电站、高中压配电线路向低压用户侧延伸，传统的配网数据采集和控制管理方式越来越不能满足要求，配电系统自动化成为必然的趋势。
Voltage Flicker in the distribution network, as a major power quality disturbance, becomes more serious with the increasing large-capacity impact load in the power system. Therefore, it is necessary to detect and analyze them. 电压闪变是一种主要的电能质量干扰，随着电力系统中大容量冲击负荷的不断增加电压闪变现象也越发严重，因此有必要要对其进行检测和分析。
With the development of the power grid construction, the number of various kinds of high voltage facilities and huge capacitive-type Equipment in using is increasing daily. It makes great sense of ensuring the security and stabilization operation in the electrical power system. 随着电力系统的建设和发展，各种高电压、大型电容型绝缘设备的应用日益增多，电容型绝缘设备的安全运行对于电网的经济、稳定运行起着举足轻重的作用。
Due to the advantages of high voltage, high energy density and environmental friendliness, lithium-ion batteries ( LIBs ) have attracted increasing interests in the application of portable devices, electronic vehicles and the large energy storage system of smart grid. 锂离子电池因具有工作电压高、比能量高、无污染等突出优点在移动电子设备中得到广泛的应用，并有望应用于电动汽车以及国家电网中大型的存储装置。
