地理气象相关的输电线路风险差异评价方法及指标
发布时间：2019-01-05 20:40
【摘要】：运行统计表明,不同区域不同气象环境下输电线路故障事件频率、发生时间等具有较大差异。而现有输电设备可靠性评价聚焦于同类型设备的整体可靠性性能,忽视了同类型设备的区域性差异、影响因素差异以及短时性故障聚集效应等特征。为了更准确地反映输电线路受气象环境影响的不同风险水平,有必要研究输电线路风险差异的分析及评价方法。该文首先分析了输电线路故障风险差异特征及其原因。然后从区域电网失效事件的气象敏感度、区域线路故障频率差异、区域线路故障失效时间差异、线路故障高风险区段等因素出发提出了反映输电线路风险差异的评价方法及指标。可深度揭示关注区域内线路失效的风险差异特征,充分反映气象灾害的影响规律及线路的防灾抗灾能力,可为线路规划设计、调度运行、状态检修等提供精细化的信息,有助于管控电网运行风险、提高电力系统可靠性水平。以某省电网的故障样本进行的实例分析,验证了所提风险评价方法和指标的适用性和优势。
[Abstract]:The operation statistics show that there are great differences in the frequency and time of transmission line failure in different regions and different meteorological environments. The reliability evaluation of the existing transmission equipment focuses on the overall reliability performance of the same type of equipment, neglecting the regional differences of the same type of equipment, the difference of influencing factors and the effect of short-term fault aggregation. In order to more accurately reflect the different risk levels of transmission lines affected by meteorological environment, it is necessary to study the analysis and evaluation methods of transmission line risk differences. This paper first analyzes the characteristics of transmission line fault risk difference and its causes. Then, from the meteorological sensitivity of regional power grid failure events, the difference of regional line fault frequency, the difference of regional line fault failure time, The evaluation method and index reflecting the difference of transmission line risk are put forward based on the factors such as high risk section of transmission line fault. It can deeply reveal the risk difference characteristics of the line failure in the area concerned, fully reflect the influence law of meteorological disaster and the disaster prevention and resistance ability of the line, and can provide fine information for the line planning and design, dispatching operation, condition maintenance, etc. It is helpful to control the operation risk of power system and improve the reliability level of power system. The applicability and advantages of the proposed risk assessment methods and indicators are verified by the analysis of the fault samples of a provincial power network.
【作者单位】： 输配电装备及系统安全与新技术国家重点实验室(重庆大学);国网河南省电力公司电力科学研究院;
【基金】：国家电网公司重大基础前瞻科技项目(SG20141187)~~
【分类号】：P49;TM75
本文编号：2402283
[Abstract]:The operation statistics show that there are great differences in the frequency and time of transmission line failure in different regions and different meteorological environments. The reliability evaluation of the existing transmission equipment focuses on the overall reliability performance of the same type of equipment, neglecting the regional differences of the same type of equipment, the difference of influencing factors and the effect of short-term fault aggregation. In order to more accurately reflect the different risk levels of transmission lines affected by meteorological environment, it is necessary to study the analysis and evaluation methods of transmission line risk differences. This paper first analyzes the characteristics of transmission line fault risk difference and its causes. Then, from the meteorological sensitivity of regional power grid failure events, the difference of regional line fault frequency, the difference of regional line fault failure time, The evaluation method and index reflecting the difference of transmission line risk are put forward based on the factors such as high risk section of transmission line fault. It can deeply reveal the risk difference characteristics of the line failure in the area concerned, fully reflect the influence law of meteorological disaster and the disaster prevention and resistance ability of the line, and can provide fine information for the line planning and design, dispatching operation, condition maintenance, etc. It is helpful to control the operation risk of power system and improve the reliability level of power system. The applicability and advantages of the proposed risk assessment methods and indicators are verified by the analysis of the fault samples of a provincial power network.
【作者单位】： 输配电装备及系统安全与新技术国家重点实验室(重庆大学);国网河南省电力公司电力科学研究院;
【基金】：国家电网公司重大基础前瞻科技项目(SG20141187)~~
【分类号】：P49;TM75
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