断路器

In view of situation that existing controller and networking communication of low-voltage breaker adopt user-defined protocol, which has shortcomings of poor reliability and exchangeability in communication, the paper introduced a design scheme of a new type of intelligent controller for low-voltage breaker based on DeviceNet protocol and introduced its design of hardware and software in details.

针对现有低压断路器控制器与控制网络通信因采用自定义协议而存在通信可靠性低和互换性差的缺点，介绍了一种基于DeviceNet协议的新型低压断路器智能控制器的设计方案，详细介绍了控制器软、硬件设计。

The faults of LW11-220 breakers were discovered through incorrect signaling of high-frequency protection, analysis of fault oscillograph and characteristic test of the breakers, and the discovery process is of instructiveness.

其中LW11-220断路器的故障是通过高频保护的误发信号和分析故障录波图以及断路器特性试验时发现的，发现过程具有启发性。

Company main products: high and low voltage switchgear; conventional circuit breaker, contactor, MCCB, knife switch, thermal relay, ammeter, voltage meter and other components; cable tray, waterproof box, meter box, home information terminal boxes, a variety of light and dark and trough distribution box, such as cable tray.

公司主要产品：高、低压开关成套设备；万能式断路器、接触器、塑壳式断路器、刀开关、热继电器、电流表、电压表等元器件；电缆桥架、防水箱、水表箱、家庭信息终端箱、各种明、暗配电箱及槽式电缆桥架等。

The Company mainly operates and acts as the agent for the following products including:frequency conversion cabinet,frequency converter,soft starter,automated control system,series of low-voltage circuit breaker,contactor,control relay,protective relay,knife switch,isolating switch,capacitor,dual power switching unit,low-voltage mutual inductor,low-voltage fuse,high-voltage vacuum circuit breaker,high-voltage mutual inductor,high-voltage load switch,high-voltage fuse,microcomputer integrated protection device and components and parts including automatic control products, Lights,button,terminal,electric meters and electromechanical products including pump,valve fan,motor,voltage transformer,wires and cables.

公司主要经营及代理的产品有：变频柜、变频器、软启动器、自动化控制系列及系列低压断路器、接器、控制继电器、保护继电器、刀开关、隔离开关、电容器、双电源切换装置、高压真空断路器、高低压互感器、高压负荷开关、高低压熔断器、微机综合保护装置及自动化控制产品、信号灯、按钮、端子、电度表等元器件及水泵、阀门、风机、电机、变压器、电线电缆等机电产品约1000多个品种、20000余种常用规格。

The Company mainly operates and acts asthe agent for the following products including:frequency conversioncabinet,frequency converter,soft starter,automated controlsystem,series of low-voltage circuit breaker,contactor,controlrelay,protective relay,knife switch,isolating switch,capacitor,dualpower switching unit,low-voltage mutual inductor,low-voltagefuse,high-voltage vacuum circuit breaker,high-voltage mutualinductor,high-voltage load switch,high-voltage fuse,microcomputerintegrated protection device and components and parts includingautomatic control products, Lights,button,terminal,electric metersand electromechanical products including pump,valvefan,motor,voltage transformer,wires and cables.

公司主要经营及代理的产品有：变频柜、变频器、软启动器、自动化控制系列及系列低压断路器、接器、控制继电器、保护继电器、刀开关、隔离开关、电容器、双电源切换装置、高压真空断路器、高低压互感器、高压负荷开关、高低压熔断器、微机综合保护装置及自动化控制产品、信号灯、按钮、端子、电度表等元器件及水泵、阀门、风机、电机、变压器、电线电缆等机电产品约1000多个品种、20000余种常用规格。

The sliding misoperation of operating mechanism in moulded case circuit breaker was one of the design problems avoiding as much as possible.

塑壳断路器操作机构的滑扣问题是断路器设计中的核心问题之一，需要尽力避免。

Based on analyzing the principle of monostable permanent magnet actuator in vacuum circuit breaker,this paper provides a method of intelligently choosing phase.

基于单稳态永磁机构的真空断路器原理分析，提出采用永磁机构的真空断路器进行智能选相。

This project have done an in-depth data mining to the data of circuit breaker on-line working conditon monitoring system, and implement some effective circuit breaker on-line working conditon monitoring data analysis diagnose methods, promote the development of the analysis and research of other devicess on-line working conditon monitoring in the substation too.

本课题对断路器在线监测系统的数据进行了深入的数据挖掘，研究并实现了一些比较有效的断路器在线监测数据分析诊断方法，更对变电所其他设备的在线监测数据开展分析研究作出了有益的探索。

On-line working condition monitoring system can find out working condition and fault position of circuit breaker just in time. It also can decrease earlier or unnecessary power cut experiment and repair, reduce maintenance and the charge of repair, increase the pertinence of inspection and repair, enhance the reliability of electric powder system distinctly.

断路器在线状态监测系统能及时了解断路器的工作状态和缺陷部位，减少过早或不必要的停电试验和检修，减少维护工作量，降低维修费用，提高检修的针对性，可显著提高电力系统可靠性。

Rich in the content of research of circuit breaker on-line working conditon monitoring, this project focuses on some signal disposal and analytic method of circuit breaker on-line working conditon monitoring system, disposing vibration signal and winding electric current mostly, researching on wavelet denoise method and data pretreatment deeply.

断路器在线监测研究的内容十分广泛，本课题着眼于断路器在线监测系统中的一些信号处理和分析方法，主要是对振动信号和线圈电流进行数据分析和处理，同时深入研究小波消噪方法和数据预处理方法。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。