A Method to Construct Early-Warning and Emergency Response System for Sulfur Hexafluoride Leakage in Substations
A Method to Construct Early-Warning and Emergency Response System for Sulfur Hexafluoride Leakage in Substations
复制标题
变电站六氟化硫泄漏预警应急系统的构建方法
DOI：
10.1109/access.2020.2979290
复制
发表时间：
2020
期刊：
影响因子：
3.9
通讯作者：
Wang Feng
中科院分区：
文献类型：
--
作者：
Liu Chunrui;Gu Wunan;Shi Lei;Wang Feng
在人口稠密的城市地区，六氟化硫(SF6)气体一旦发生泄漏，如果其浓度大大超过1000ppm，氧气浓度低于19vol%，就会导致窒息死亡。如果不能及时有效地发现和应对泄漏，甚至会导致大量的死亡人数。目前，关于SF6泄漏的监测、预警、后果预测和应急响应的系统技术方法还很少有报道。提出了一种构建变电站SF6泄漏预警与应急响应系统的方法。首先，通过CFD模拟分析变电站内不同泄漏点的SF6气体泄漏浓度分布，确定最先检测到SF6浓度超过阈值的敏感区坐标，从而确定传感器监测点。通过改变变电站内的泄漏位置和泄漏孔直径，得到泄漏时间、泄漏孔直径和浓度之间的耦合关系数据，通过回归建立了SF6在变电站内扩散浓度的预测模型。在预测模型的基础上，构建了变电站SF6泄漏应急响应系统，并结合变电站安全管理数据，在SF6泄漏事故发生后立即识别应急响应所需的文件，为现场人员采取应急响应和安全防范措施提供指导。本文以一起变电站泄漏事件为例，介绍了构建变电站泄漏预警与应急响应系统的方法及其应用。本文的研究成果可以为SF6泄漏的预警和应急响应提供理论依据，从而提高变电站的固有安全水平。
Sulfur hexafluoride (SF6) gas leakage in populous urban areas, once occurring, can cause death from suffocation if its concentration largely exceeds 1000ppm and oxygen concentration is low than 19 vol-%. Leakage that cannot be detected and responded to with prompt and effective measures can even lead to large death tolls. Presently, few systematic technical approaches to monitoring, early-warning, consequence prediction, and emergency response of SF6 leakage have been reported. In this paper, a method for constructing the early-warning and emergency response system for SF6 leakage in substations is proposed. Firstly, the concentration distribution of leaked SF6 gas at different leakage points within the substation space is analyzed using CFD simulation to determine the coordinates of sensitive areas where the exceeding of the threshold value of SF6 concentrations is first detected and thus to ascertain sensor monitoring points. By altering leakage locations and leakage orifice diameters within the substation space, the data concerning the coupling relationship between leakage time, leakage orifice diameter, and concentration are obtained, and a prediction model of diffusion concentration of SF6 leakage in substations is established through regression. Based on the prediction model, an emergency response system for SF6 leakage in substations is constructed; additionally, in combination with safety management data of substations, the files required for emergency responses to SF6 leakage can be identified immediately after occurrence, which provide a guidance for on-field personnel to take emergency responses and safety prevention measures. In this paper, a case study of a substation leakage event is presented to describe the method to construct an early-warning and emergency response system for leakage in substations, as well as the application of the method. The results of this research can provide a theoretical basis for early-warning and emergency response to SF6 leakage, thereby improving the inherent safety levels of substations.
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影响因子：
2.6
作者：
Pang, Haowen;Sun, Xiaoyang;Wu, Jingbo
通讯作者：
Wu, Jingbo
DOI：
10.1177/0954406218778882
发表时间：
2018-06
期刊：
Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science
影响因子：
--
作者：
Jianyong Zuo;J. Ding;Wei Hu;Fei Han;Lihua Zhang
通讯作者：
Jianyong Zuo;J. Ding;Wei Hu;Fei Han;Lihua Zhang
DOI：
10.1109/cac.2017.8242743
发表时间：
2017-10
期刊：
2017 Chinese Automation Congress (CAC)
影响因子：
--
作者：
Jin Zhu;Xiaolong Li;Wei Zheng
通讯作者：
Jin Zhu;Xiaolong Li;Wei Zheng
DOI：
--
发表时间：
2013
期刊：
Transducer and Microsystem Technologies
影响因子：
--
作者：
Huang Xiao-hui
通讯作者：
Huang Xiao-hui
DOI：
10.1177/1550147718783684
发表时间：
2018-06
影响因子：
2.3
作者：
Lianhong Ding;Yu Xiao;Xiaotong Deng;Feng Li
通讯作者：
Lianhong Ding;Yu Xiao;Xiaotong Deng;Feng Li