电能

The ultrasonicpower supply provides appropriate electric for the transducer, and the transducertransforms the electric energy into the ultrasonic kinetic energy to make the Chinese traditional medicine liquor atomize.

高频超声波电源为换能器提供电能，换能器将电能转为动能，并对药罐里的中药进行快速雾化干燥。

So it is important to research and practice the electronic technology in electric power field.The author is mainly to discuss the master and trigger circuit of three-phase bridge controlled rectifier circuit, and controlled circuit diagram.

近几年越来越多电力电子应用在国民工业中，一些技术先进的国家，经过电力电子技术处理的电能已得到总电能的一半以上。

Meter is the current energy measurement and economic settlement of the main tools, it is right or not directly related to the country's economic interests with the user.

电能表是当前电能计量和经济结算的主要工具，它的正确与否直接关系到国家与用户的经济利益。

This thesis has deduced the electric meter mathematics model by analyzing the principle of two kinds of power meters.

为了保证电能计量的准确可靠，本文在谐波对电能表计量影响方面进行了系统的分析和研究。

In the establishment of electric energy management system, the innovation of data source equipment, electric power meter,is always neglected.

在电能管理系统的建设中，往往忽视对数据源设备———电能表的革新。

With the widespread use of electricity, electricity sector work on electric energy measurement of a higher demand, power meter to bear the features are increasing, currently being used in the induction of universal energy form, as accuracy Di Qi, big error , single function, such as mechanical wear can not overcome the shortcomings, the customer can not meet the electricity demand and electricity enterprises development.

随着电力的广泛使用，供电部门对电能计量工作提出了更高要求，电能计量表要承担的功能也越来越多，目前所普遍使用的感应式电能表，由于其精度低，误差大，功能单一，机械磨损无法克服等缺点，已不能适应用电客户的需求和电力企业改革发展的需要。

But many problems still unresolved due to the disaccord of the electrical communication protocols which relevant to the types of ammeters, communication channels, and bring the disadvantage to the electrical charge systems integration, maintenance and upgrading. For solving the interoperation of power communication protocols, DLMS UA proposed a new communication protocol called DLMS /COSEM which world widely used and accepted as international standard by IEC and TC13 in recently years. The research in this area has just begun in China.

但是，这些系统由于选用的电能表型号不同、通信信道类型多种多样，而造成电能表通信协议不统一，给集中抄表带来了系统集成、维护和通信信道维护及升级困难等诸多问题，为了解决电能表通信协议的互操作性问题，DLMS用户协会提出了一种新的通信协议—DLMS／COSEM，目前已由IEC、TC13采纳作为国际标准，近年来在全世界范围得到了应用，我国在这方面的研究刚刚起步。

The products including: induction meter (single-phase and three-phase), electronic meter (single-phase and three-phase), Three phase multi-functions electronic meter, prepayment electronic meter (single-phase and three-phase) and so on, some detail specification can be adjusted according to the requirements of customer.

主要有机械式单，三相电能表，电子式单，三相多功能电能表，预付费电子单，三相电能表等，具体的技术参数可以按照客户的要求生产。

In the oil industry, high loss of the energy is a common problem, the electric power consumption for oil-pumping is about 80% of the total power consumption of the oil field. So it can make a good benefit to change the mechanical system and electrical control system of the oil-pumping unit.

据统计在油田生产成本中约有三分之一为电能消耗，而抽油机消耗的电能约占总电能消耗的80%，对抽油机的机械系统和电气控制系统进行节能改造，可带来相当可观的经济效益。

The centralized meter reading system using "Client/Server" model and established the meter logical device, object interface model based on "Connect-Oriented" TCP Service, then, designed the function module and data frames of ammeter according to OBIS system, finally, realized the communication between PC station and meter server using DLMS/COSEM protocol.

本系统以&客户机／服务器&为模型，在面向连接的TCP传输服务的基础上，按照DLMS／COSEM应用协议标准创建电能表逻辑设备，对象接口模型，并依照OBIS系统设计电能表应用功能模块和数据帧，实现PC管理主站和嵌入式电能表集中器之间的DLMS／COSEM网络协议通信。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。