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Earthing shock safety design standards

机译：接地休克安全设计标准

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This paper examines the physiological basis for shock safety standards, and how previously conflicting ambiguous standards are being re-aligned in Australia and other countries, using quantified risk analysis to calculate risk of fatality as the new design metric. While a simple one ohm grid resistance may be an adequate design target (even for a substation with a 50kA earth fault level, provided the power cable systems are intact), it has been universally recognised that tolerable touch voltages are a more appropriate metric for safety standards. However, discussions with over 100 engineers from 13 countries have shown that there is a large variety in approaches, ranging from blanket application of standard template configurations (independent of boundary conditions and approach applicability checks) to individually designed and commissioned installations. The new risk based design metric enables designers to more objectively justify the standard to apply for each exposure location.
机译：本文审查了休克安全标准的生理基础，以及以前在澳大利亚和其他国家重新对准的暧昧标准如何在澳大利亚和其他国家重新调整，以计算致命风险作为新的设计度量。虽然简单的一个欧姆电网电阻可以是适当的设计目标（即使对于电源线系统完好无损），即使对于具有50kA接地故障水平的变电站，也普遍认识到可容忍的触摸电压是安全的更适合度量标准。但是，与来自13个国家的100多个工程师的讨论表明，方法中有很大的方法，从标准模板配置的毯子应用（独立于边界条件和接受适用性检查）到单独设计和委托安装。新的基于风险的设计指标使设计人员能够更客观地为每个曝光位置施加标准。

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