四川西部地区地理环境复杂,滑坡空间结构多样且变形剧烈。为有效预防滑坡灾害,需要探究相关区域滑坡危险性可靠评价方法。利用G1-熵权耦合赋权逼近理想解排序法(technique for order preference by similarity to ideal solution,TOPSIS...四川西部地区地理环境复杂,滑坡空间结构多样且变形剧烈。为有效预防滑坡灾害,需要探究相关区域滑坡危险性可靠评价方法。利用G1-熵权耦合赋权逼近理想解排序法(technique for order preference by similarity to ideal solution,TOPSIS)构建滑坡灾害危险性评价模型,选取高程、降雨、地震动参数等12个评价因子,对雅砻江滑坡灾害危险性进行评价。依据贴近度将滑坡区域分为4个等级,即高危险区(0.75~1)、较高危险区(0.5~0.75)、中等危险区(0.25~0.5)和低危险区(0~0.25)。同时,对比了由差分干涉测量短基线集时序分析(small baseline subset interferometric synthetic aperture radar,SBAS-InSAR)技术得到的4个区域滑坡实测结果和本文评价模型的分析结果。利用G1-熵权耦合赋权TOPSIS得到九龙县烟袋镇桤木林村高生地滑坡、新龙县和平乡甲西村麻西滑坡、德格县年古乡政府滑坡和甘孜县扎科乡达玛滑坡的贴近度分别为0.854、0.686、0.405和0.224,由SBAS-InSAR技术得到滑坡前缘局部变形速率分别为-150、-43、-66、30 mm/a,二者之间有显著的对应关系,证明本文评价模型的准确性。应用G1-熵权耦合赋权TOPSIS法对滑坡危险性评价具有较高的准确性,该方法可为其他地区滑坡地质灾害评价提供参考。展开更多
为了进一步提高电能质量评估结果的精细化程度,提出了一种基于灰色关联度分析(Grey Relational Analysis,GRA)、二元语义(Binary Semantics,BS)和逼近理想解排序法(Technique for Order Preference by Similarity to an Ideal Solution,...为了进一步提高电能质量评估结果的精细化程度,提出了一种基于灰色关联度分析(Grey Relational Analysis,GRA)、二元语义(Binary Semantics,BS)和逼近理想解排序法(Technique for Order Preference by Similarity to an Ideal Solution,TOPSIS)的电能质量综合评估方法。首先建立电能质量综合评估指标体系;其次利用G1法确定主观权重,采用指标相关法(Criteria Importance Though Intercrieria Correlation,CITIC)确定客观权重,并引入博弈论优化主客观综合权重系数,得到各项指标的综合权重;然后使用TOPSIS方法计算监测点指标数据与各指标对应的最优、最劣解之间的欧氏距离,并结合灰色关联度计算出相对贴近度,将其作为确定电能质量等级的判据并进行一次评估;最后利用二元语义法对一次评估结果中电能质量等级相同的监测点进行更为精细的二次评估。仿真算例结果验证该方法的有效性和精细性。展开更多
针对有载分接开关(On-load Tap Changer,OLTC)故障机理的复杂性和多样性,本文通过建立有载分接开关的状态评估指标体系,提出了一种基于博弈论组合赋权和云模型的有载分接开关状态评估方法。即采用G1赋权法和熵权法分别计算了有载分接开...针对有载分接开关(On-load Tap Changer,OLTC)故障机理的复杂性和多样性,本文通过建立有载分接开关的状态评估指标体系,提出了一种基于博弈论组合赋权和云模型的有载分接开关状态评估方法。即采用G1赋权法和熵权法分别计算了有载分接开关评估指标的主客观权重,进而基于博弈论思想确定了OLTC状态评价指标的组合权重。然后基于云模型分别构建OLTC运行状态等级和评估指标的正态云模型并计算了其云隶属度,从而更好地体现了OLTC状态信息的不确定性,据此结合组合赋权权重得到了OLTC运行状态的最终评估结果。展开更多
配电网带电作业是指线路配电设备带电进行检修,在这种高风险环境下工作,作业计划需要根据气象条件等不可控因素灵活调整,建立科学可靠的配电网微气象带电作业安全评估方法对保证带电作业环节安全、提高人员调度效率和作业效率至关重要...配电网带电作业是指线路配电设备带电进行检修,在这种高风险环境下工作,作业计划需要根据气象条件等不可控因素灵活调整,建立科学可靠的配电网微气象带电作业安全评估方法对保证带电作业环节安全、提高人员调度效率和作业效率至关重要。本文依据配网带电作业特点,确认配网微气象带电作业安全评价指标;基于评价指标层次结构采用G1赋权法确定气温、相对湿度等指标的权重;划分带电作业安全等级,结合半梯形和三角形函数构建各气象指标隶属度函数,并基于数值预报修正数据,对带电作业安全进行评估,确保带电作业安全,为未来的作业计划和决策提供可靠的参考依据。Live working in distribution networks refers to the maintenance of live distribution equipment on power lines. Working in such a high-risk environment requires flexible adjustments to the homework plan based on uncontrollable factors such as meteorological conditions. Establishing a scientifically reliable safety assessment method for micro meteorological live working in distribution networks is crucial for ensuring the safety of live working processes, improving personnel scheduling efficiency, and operational efficiency. Based on the characteristics of live working in distribution networks, this article confirms the safety evaluation indicators for micro meteorological live working in distribution networks;Using the G1 weighting method based on the hierarchical structure of evaluation indicators to determine the weights of indicators such as temperature and relative humidity;Divide the safety level of live working, construct membership functions for various meteorological indicators based on semi trapezoidal and triangular functions, and evaluate the safety of live working based on numerical forecast correction data, ensuring the safety of live working and providing reliable reference for future work plans and decisions.展开更多
文摘四川西部地区地理环境复杂,滑坡空间结构多样且变形剧烈。为有效预防滑坡灾害,需要探究相关区域滑坡危险性可靠评价方法。利用G1-熵权耦合赋权逼近理想解排序法(technique for order preference by similarity to ideal solution,TOPSIS)构建滑坡灾害危险性评价模型,选取高程、降雨、地震动参数等12个评价因子,对雅砻江滑坡灾害危险性进行评价。依据贴近度将滑坡区域分为4个等级,即高危险区(0.75~1)、较高危险区(0.5~0.75)、中等危险区(0.25~0.5)和低危险区(0~0.25)。同时,对比了由差分干涉测量短基线集时序分析(small baseline subset interferometric synthetic aperture radar,SBAS-InSAR)技术得到的4个区域滑坡实测结果和本文评价模型的分析结果。利用G1-熵权耦合赋权TOPSIS得到九龙县烟袋镇桤木林村高生地滑坡、新龙县和平乡甲西村麻西滑坡、德格县年古乡政府滑坡和甘孜县扎科乡达玛滑坡的贴近度分别为0.854、0.686、0.405和0.224,由SBAS-InSAR技术得到滑坡前缘局部变形速率分别为-150、-43、-66、30 mm/a,二者之间有显著的对应关系,证明本文评价模型的准确性。应用G1-熵权耦合赋权TOPSIS法对滑坡危险性评价具有较高的准确性,该方法可为其他地区滑坡地质灾害评价提供参考。
文摘为了进一步提高电能质量评估结果的精细化程度,提出了一种基于灰色关联度分析(Grey Relational Analysis,GRA)、二元语义(Binary Semantics,BS)和逼近理想解排序法(Technique for Order Preference by Similarity to an Ideal Solution,TOPSIS)的电能质量综合评估方法。首先建立电能质量综合评估指标体系;其次利用G1法确定主观权重,采用指标相关法(Criteria Importance Though Intercrieria Correlation,CITIC)确定客观权重,并引入博弈论优化主客观综合权重系数,得到各项指标的综合权重;然后使用TOPSIS方法计算监测点指标数据与各指标对应的最优、最劣解之间的欧氏距离,并结合灰色关联度计算出相对贴近度,将其作为确定电能质量等级的判据并进行一次评估;最后利用二元语义法对一次评估结果中电能质量等级相同的监测点进行更为精细的二次评估。仿真算例结果验证该方法的有效性和精细性。
文摘针对有载分接开关(On-load Tap Changer,OLTC)故障机理的复杂性和多样性,本文通过建立有载分接开关的状态评估指标体系,提出了一种基于博弈论组合赋权和云模型的有载分接开关状态评估方法。即采用G1赋权法和熵权法分别计算了有载分接开关评估指标的主客观权重,进而基于博弈论思想确定了OLTC状态评价指标的组合权重。然后基于云模型分别构建OLTC运行状态等级和评估指标的正态云模型并计算了其云隶属度,从而更好地体现了OLTC状态信息的不确定性,据此结合组合赋权权重得到了OLTC运行状态的最终评估结果。
文摘配电网带电作业是指线路配电设备带电进行检修,在这种高风险环境下工作,作业计划需要根据气象条件等不可控因素灵活调整,建立科学可靠的配电网微气象带电作业安全评估方法对保证带电作业环节安全、提高人员调度效率和作业效率至关重要。本文依据配网带电作业特点,确认配网微气象带电作业安全评价指标;基于评价指标层次结构采用G1赋权法确定气温、相对湿度等指标的权重;划分带电作业安全等级,结合半梯形和三角形函数构建各气象指标隶属度函数,并基于数值预报修正数据,对带电作业安全进行评估,确保带电作业安全,为未来的作业计划和决策提供可靠的参考依据。Live working in distribution networks refers to the maintenance of live distribution equipment on power lines. Working in such a high-risk environment requires flexible adjustments to the homework plan based on uncontrollable factors such as meteorological conditions. Establishing a scientifically reliable safety assessment method for micro meteorological live working in distribution networks is crucial for ensuring the safety of live working processes, improving personnel scheduling efficiency, and operational efficiency. Based on the characteristics of live working in distribution networks, this article confirms the safety evaluation indicators for micro meteorological live working in distribution networks;Using the G1 weighting method based on the hierarchical structure of evaluation indicators to determine the weights of indicators such as temperature and relative humidity;Divide the safety level of live working, construct membership functions for various meteorological indicators based on semi trapezoidal and triangular functions, and evaluate the safety of live working based on numerical forecast correction data, ensuring the safety of live working and providing reliable reference for future work plans and decisions.