1220 results about "Insulator strings" patented technology

The invention relates to a grid thunder-threat distribution confirming method. The confirming method adopts a computer to process thunder automatic monitoring data and establish a databank, and adopts a grid method to carry out statistical analysis to the thunder parameter while taking a geographic information system and the databank as an analysis platform, and then adopts the computer to carry out the statistical analysis to the thunder data according to typical criterion so as to obtain the thunder-threat distribution of corresponding objects. The method has the following basic steps: firstly, the thunder automatic monitoring data is stored in the databank by the computer; then grid distribution is carried out to selected zones on a digital map; the data of each grid is analyzed statistically to obtain the statistical thunder parameter; and then the current-amplitude value of threatening thunders which can cause the flashover of insulator strings of power transmission lines is adopted as judging evidence according to a grid insulation structure to make the statistical analysis to the attribute of the thunder current-amplitude value and eliminate the useless data; special attribute data of happened flashover accidents caused lightning-strike on the power transmission lines is stored in the computer; finally, the computer is used for figuring out corresponding geographic distribution layers so as to obtain the grid electronic thunder-threat distribution chart. The method has the advantages that the method is easy and intelligible with better operability and practicability.

The invention relates to a porcelain suspension type insulator fault diagnosis method. The method can realize the diagnosis of a faulty insulator by analyzing the temperature feature information of a porcelain suspension type insulator string. When the method is used for implementing diagnosis, the infrared thermal image spectrum of a certain number of the same types of insulator strings having no obvious abnormality can be collected on a to-be-detected site, so as to form the reference temperature feature information of the type insulator string of the detection site. Then the temperature feature information in the infrared thermal imaging spectrum of the to-be-diagnosed insulator string is extracted to compare with the reference temperature feature information, and the faulty insulator can be judged when no obvious difference exists. According to the porcelain suspension type insulator fault diagnosis method, the influence of the environment interference factor on the temperature feature of the insulator string can be eliminated, and the insulator fault diagnosis accuracy of the infrared thermal imaging method can be effectively improved. The porcelain suspension type insulator fault diagnosis method considers the difference of temperature feature difference of insulators at different positions, can realize diagnosis by comparing the temperature features of the same position of the similar equipment in the identical environment, and is applicable to the insulator fault diagnosis under various complicated conditions. The porcelain suspension type insulator fault diagnosis method can be conveniently applied on site.

The present invention discloses a spinning electricity replacing method and a double yoke-plate device of high-tension transmission line strain insulator. A wing-shaped card and an insulation drawplate and other special tools on the end are used to firstly loose the stain insulator; a pulley block and a lead screw on the sides of a cross arm and a lead wire are used to complete break away the twoends of the strain insulator; finally the pulley block arranged on a ground bracket is used to rotate a porcelain insulator from a horizontal state to a vertical state, thus changing the complicated operation to the simple operation, greatly shortening the equipotential operation time and ensuring the safe operation of the line. The double yoke-plate device of high-tension transmission line strain insulator includes two wing-shaped cards and two lead screws as well as two insulation drawplates; one end of the two insulation drawplates is respectively connected with the two wings of the two wings of the wing-shaped card and the other end is respectively connected with the lead screw; the other end of the two lead screws is respectively connected with the two wings of the other wing-shaped card. The present invention has the advantages of simple structure, easy operation and low cost.

An insulator which can improve the electrical strength of external insulation relates to a line, a pillar and a bushing insulator with high electrical strength. An upper barrier and a lower barrier are arranged on an upper electrode and a lower electrode of the insulator, a middle barrier is arranged at the outside of an cascading electrode of the insulator string, an upper ring barrier and a lower ring barrier are externally arranged on an upper equalizing ring and a lower equalizing ring of the insulator, and an iron tower barrier and a transmission line barrier are arranged nearby an iron tower and a transmission line close to the insulator. The invention arranges one or multiple barriers, which can improve the strength of external insulation of the insulator, between the two electrodes of the insulator, changes the double-element structure of traditional insulators into a three-element structure, namely consisting of three parts of electrodes, insulators and barriers. The barrier stops moving charge entering from an area to another area, thus easing the area with electrical field distribution in a tense state, obviously enhancing the initial corona voltage and flashover voltage of the insulator, reducing radio interference and the power consumption of high-voltage transmission lines and relieving the deterioration of the insulator.