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265 results about "String length" patented technology

Configuration method of high-voltage transmission line insulator

InactiveCN101540487ASatisfy the requirements of pollution external insulation designMeet the design requirementsSuspension/strain insulatorsApparatus for overhead lines/cablesElectric power systemEngineering
The invention relates to a configuration method of a high-voltage transmission line insulator, belonging to the technical field of transmission line insulation design of a power system. The method comprises the steps as follows: firstly, a mapping table is established according to the existing experience or the corresponding standards, thereby estimating the string length of the insulator to be selected, wherein the insulator is needed in line design; the insulator to be configured is chosen according to the string length of the insulator in the mapping table and mechanical requirements; for a specific insulator to be configured, the salt deposit density of the operated insulator is calculated and the pollution flashover voltage is acquired by the data of the pollution test; in consideration of revisions of a plurality of affection factors, the withstand voltage of the insulator to be configured is calculated and the string length of the insulator is determined according to the target voltage of the line to be designed; and finally, the string length and the string length threshold in the mapping table are calibrated, thereby determining final insulation configuration result. The method realizes two functions of insulator type selecting and size configuration and directly uses the results of the pollution test to calculate, so as to ensure the precision and reliability of insulator configuration to meet the requirements on line pollution outer insulation design.
Owner:ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD +1

Short link address generating method and system thereof

InactiveCN106412140AImprove search conversion speedImprove usabilityTransmissionResource poolHash function
The invention discloses a short link address generating method and a system thereof. The method comprises the following steps of receiving a link address conversion request and generating a corresponding Hash value for an original URL based on a Hash algorithm; determining whether a memory cache has a short link address matching with the Hash value, and if the memory cache has the short link address, directly returning the short link address; otherwise, taking one resource from a short link resource pool to generate the short link address, and returning the newly-generated short link address and storing in the memory cache, wherein the short link resource pool is created according to a generation strategy corresponding to a short link address resource demand; the generation strategy includes a selected coding character set and an only identification character string length corresponding to the short link address; and the short link resource pool carries out resource expansion through changing the only identification character string length. In the invention, a short link address retrieval conversion speed is increased and a problem that a collision possibility is increased because a value domain of a Hash function is too small is effectively avoided so that system availability is increased.
Owner:沈阳东软睿道教育服务有限公司

Catenary suspension string preplanning platform

The invention provides a catenary suspension string preplanning platform. The catenary suspension string preplanning platform mainly comprises an electric control device, an automatic wire sending and cutting device, a left copper sleeve pushing device, a right copper sleeve pushing device, a suspension string length control device, a hydraulic system, a suspension string tension presetting device and a reversing pressing ring device. The platform can intelligently control the procedures of automatically feeding the suspension string, penetrating a crimping pipe in a positive direction, encircling a heart-type ring, penetrating the crimping pipe in a negative direction, adjusting the tension of a stranded wire according to a preset value, determining the length of the stranded wire according to a preset value, automatically crimping a mechanical device, cutting off the wire according to the length requirement and the like, so that the manual intervention is reduced to the maximum extent. The catenary suspension string preplanning platform has the characteristics of high efficiency, high precision, high automation degree and the like as the traditional manual processing is replaced by mechanical intelligent production, can solve the problems such as poor precision, low efficiency and high reject rate existing in the current manual preplanning efficiently, can make up the blank of research in related fields at home and abroad, and can realize mechanical and professional construction of key procedures of the catenary construction.
Owner:CHINA RAILWAY DESIGN GRP CO LTD

Method and system for intelligently matching and showing recommended information of web page according to product title

The invention discloses a method and system for intelligently matching and showing recommended information of a web page according to a product title. The method comprises the following steps: first, extracting the product title on the web page; then, conducting Chinese word segmentation for the product title, matching with product words in a product word bank, and taking out the product words; obtaining the string length of the product words, and taking out the product word with the longest string length as a kernel keyword; finally, matching with information containing the kernel keyword as the recommended information from an information bank, and picking the recommended information onto a page showing interface to be showed. The method and the system can automatically match and show the recommended information of the web page only according to the product title on the page, so that the fact that technical staff manually set the recommended information backstage in the past is avoided. The operation is simple and convenient, the workload is greatly relieved, and the working efficiency is increased. In addition, when the production information in the information bank needs to be updated, as the method and the system automatically match the recommended information, the manual update of the technical staff is avoided, and the updating speed is increased.
Owner:广州市一呼百应网络技术股份有限公司
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