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首页> 外文期刊>Environmental engineering and management journal >PREVENTING WORKING ACCIDENTS BY SHORT-CIRCUIT CURRENTS IN ISOLATED NEUTRAL SYSTEMS OVER 1 KV
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PREVENTING WORKING ACCIDENTS BY SHORT-CIRCUIT CURRENTS IN ISOLATED NEUTRAL SYSTEMS OVER 1 KV

机译：在超过1 KV的隔离中性系统中防止短路造成的工作事故

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摘要

Thirty two per cent of all injury risks identified at work are risks arising from work equipment. In this sense, the use of protective equipment, respectively earthing devices during interventions / works in electrical installations are the main protective measure against these risks. Short-circuit current calculation is necessary to determine the stress on both switching devices and protection equipment in substations, and for choosing protective equipment for workers. This paper aims to make an analysis of the three-phase short-circuit on high voltage overhead lines with insulated neutral on workers, during the execution of the work, in the protected working area using earthing devices. Case studies are done for different values of earthing dispersion resistance of overhead line poles, in order to determine the most appropriate situation for safety of workers.
机译：在工作中发现的所有伤害风险中，有32％是工作设备引起的风险。从这个意义上讲，在电气设备的干预/工作期间分别使用保护设备和接地设备是防止这些风险的主要保护措施。短路电流计算对于确定变电站中的开关设备和保护设备上的压力以及为工人选择保护设备都是必要的。本文旨在分析在工作执行期间在受保护的工作区域中使用接地设备对工人进行绝缘的中性线的高压架空线上的三相短路情况。为了确定最适合工人安全的情况，对不同的架空线杆接地分散电阻值进行了案例研究。

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