2300XPC电铲无功功率补偿断路器的改进

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英文篇名：Improvement of Reactive Power Compensation Circuit Breaker in 2300 XPC Electric Excavator 作者：刘文涛 英文作者：LIU Wen-tao;Dexing Copper Mine, Jiangxi Copper Corporation Ltd.; 关键词：露天矿山 ; 电铲 ; 技术改造 ; 无功补偿 ; 断路器 英文关键词：open-pit mine;;excavator;;technological reform;;reactive compensation;;breaker 中文刊名：TYGC 英文刊名：Copper Engineering 机构：江西铜业集团有限公司德兴铜矿; 出版日期：2019-06-28 出版单位：铜业工程 年：2019 期：No.157 语种：中文; 页：TYGC201903029 页数：4 CN：03 ISSN：36-1237/TF 分类号：103-106

摘要

2300XPC电铲电气采用国外先进的直流调速系统,无功功率补偿柜提供整流器所需要的无功功率补偿,同时在挖掘机正常运行期间过滤电气系统所产生的主要谐波,因此我们采用的是进口无功功率补偿断路器。无功功率补偿断路器的工作原理是RPC柜内的电抗器和电容发生短路而起到一种保护作用从而防止其他电气柜发生更严重的损坏。无功功率补偿断路器在南方野外下雨环境下,易出现无功功率补偿断路器600V电压会串入低压辅助触点信号线,导致RPC远程站柜内元件大部分烧坏严重,影响电铲的稳定性。经过几个月不断改进,减少了电铲无功补偿断路器的故障时间,大大提高了电铲的可开动率。
        The 2300XPC electric excavator adopts a foreign advanced DC speed regulation system. The reactive power compensation cabinet provides reactive power compensation for rectifiers, and filters the main harmonics generated by the electrical system during normal operation of excavators. Therefore, we use imported reactive power compensation circuit breakers. The principle of reactive power compensation circuit breaker is that the reactor and capacitor in the RPC cabinet are short-circuit and play a protective role to prevent more serious damage to other electrical cabinets. In the southern wild rain environment, reactive power compensation circuit breakers 600V voltage will be strung into the low-voltage auxiliary contact signal line, resulting most of the components burned seriously in the RPC remote station cabinet, affecting the stability of the shovel. After several months of continuous improvement, the breakdown time of excavator reactive power compensation circuit breaker is reduced, and the starting rate of the shovel is greatly improved.

引文

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