中国科学院行为科学重点实验室知识库

评估灾区人群的灾害可承受风险时,可以先从灾区患病人群挖掘、心理风险源因素识别两方面进行分析,通过基于信息熵的灾后患有心理疾病人群挖掘算法,挖掘灾区患有心理疾病人群,减少评估范围;面向挖掘出的心理疾病患者采用改进ISR压力模型,判断心理风险源因素,提高评估结果准确性;最后通过建立的灾害可承受风险评价指标体系,构建基于心理承压的灾害可承受风险评估模型,评估灾区中患有心理疾病人群的灾害风险承受能力。为验证基于心理承压的灾害可承受风险评估模型有效性和性能优势,进行实验验证。结果表明,该模型可有效评估灾区人群基于心理承压的灾害可承受风险,评估复杂度低于5%。

Under the condition of lightning strike，the multistage series flashover protector of transmission line is easy to break the line and trip，which has a great influence on the work and life of human beings． In this paper，the properties of lightning strike and its lightning damage are analyzed，and the harm of lightning strike to multistage series flashover protector of transmission line is obtained． The fault point of multistage series flashover protector，positive sequence，negative sequence and zero sequence of power supply side and load side are calculated，and the lightning current is first introduced into the earth by installing adjustable gap protection device near the fault point． The gap arc will be driven by electromagnetic force and wind force and other external forces，and then it will be elongated and extinguished quickly，so as to control the degree of broken line failure． There is no serious wear and tear． The lightning shock experiment is carried out on the multistage series flashover protector． The results show that the discharge path is between the gaps after the control of this method，and the protection gap can ensure the insulation safety of the insulators under the lightning strike disaster． Effectively avoid multi-stage series flashover protector broken line fault resulting in cracking and other serious cases．