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36 results about "Temporal search" patented technology

Wavelet transform and time search strategy based double-end traveling wave fault location method for hybrid power transmission line

The invention discloses a wavelet transform and time search strategy based double-end traveling wave fault location method for hybrid power transmission line. The method comprises the following stepsof 1) determining an electrical topological structure of the hybrid power transmission line MN; 2) acquiring the motion time of traveling waves on a section line according to the length and motion wave speed of each section line; 3) according to fault traveling wave information acquired by traveling wave distance measuring devices at the two ends of the line, adopting wavelet transform to detect and identify the moment when the fault traveling wave moves to each bus measuring end for the first time so as to obtain a time difference when the traveling wave arrives at the two ends of the bus, and calculating t1 an t2 according to formulas by combining movement time of the fault traveling wave on the whole power transmission line; and 4) starts comparing from the end M of the bus, judging that the fault position is behind the xj1 section when t1>deltat1, and judging that the fault position is on the xd1 section when deltat1<t1<deltat1+deltat2, thus calculating the fault position. The method can be used to identify the initial traveling wave of a fault more accurately, and effectively solve the problem in fault distance measurement of the cable and overhead line hybrid power transmission line of the power system.
Owner:JIANGSU ELECTRIC POWER CO +1

Network resource configuration method and device, computer equipment and readable storage medium

The invention provides a network resource configuration method and device, computer equipment and a readable storage medium. The method comprises: obtaining a network resource optimal configuration model; and according to the transmission task information and the resource configuration strategy, performing resource allocation, converting the network resource optimal configuration model into a taskstability optimization model corresponding to network resource configuration, solving the task stability optimization model to obtain network resource configuration information of continuous task transmission, and configuring network resources according to the network resource configuration information. According to the method, task types and network state time-varying characteristics can be considered; and, aiming at the heterogeneous communication network, a process-oriented continuous task network resource optimal configuration problem is converted into a time slot-oriented task stabilityoptimization problem, and the task stability optimization problem is solved to obtain network resource optimal configuration information to realize network resource optimal configuration, so that thetime search dimension and the resource search dimension are reduced, and the algorithm complexity is reduced.
Owner:TSINGHUA UNIV

Film and television expression searching method and device, storage medium and computer equipment

The invention relates to a movie and television expression search method and device, a storage medium and computer equipment. The method comprises the steps of receiving a user search request; obtaining a search text corresponding to the user search request; performing word segmentation on the search text to obtain an entity text and/or a non-entity text, the entity text including a movie name anda figure name, and the non-entity text including verbs, adjectives and words representing emotions; obtaining expressions, matched with the entity text and/or the non-entity text, of the labels in the picture library as target expressions; obtaining the click rate, the storage time and the search relevancy of the target expression; and sorting the target expressions according to the click rate, the storage time and the search relevancy of the target expressions, and outputting the target expressions in a descending order. According to the technical scheme, the expressions are searched according to the entity labels, the non-entity labels and the document labels, and the searched expressions are comprehensively sorted according to the dimensions such as the search relevancy, the click rateand the time, so that the expression search result output to the user is more accurate.
Owner:BEIJING QIYI CENTURY SCI & TECH CO LTD
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