Intelligent device for circularly melting ice on power transmission line with eight split sub-conductors by current

Abstract

The invention relate to an intelligent device for circularly melting ice on a power transmission line with eight split sub-conductors by current. The external environment condition is monitored to judge whether the power transmission line is iced up or not, and an intelligent controller controls a circuit breaker to switch on and off to transfer the total current transmitted by the power transmission line to one part of the eight sub-conductors so as to increase the current density of the sub-conductors and achieve the purpose of melting ice. The intelligent controller adopts the load current measured by a current inducer, the icing state measured by an icing-parameter monitoring unit and the external environment condition to automatically compute the time spent on melting ice, controls the circuit breaker to transfer the current to the other part of the sub-conductors after the ice on one part of the sub-conductors is melted and returns to the normal work state until the ice on the eight split sub-conductors is completely melted and shed. During the working of the intelligent device, the intelligent controller is used for controlling integrally. The work standard of the intelligent controller is judged by the current inducer, the icing-parameter monitoring unit and the external environment condition. The intelligent device can be used for melting and removing the ice on the power transmission line without manual intervention.

Description

technical field [0001] The invention relates to the technical field of voltage transmission, in particular to a high-voltage transmission line ice-melting device for eight-split conductors. Background technique [0002] In the environment of low temperature and high humidity in winter, high-voltage power transmission lines will be covered with icing. Severe icing will lead to major accidents such as the collapse of transmission line towers and broken wires that affect the safe and reliable operation of the power system, causing large-scale power outages in the power grid. Seriously affect industrial and agricultural production and people's lives, and cause huge economic losses. [0003] Anti-icing, melting and deicing of high-voltage transmission lines have always been the focus of attention at home and abroad. The existing deicing and anti-icing technology for high-voltage transmission lines is still immature and cannot meet the requirements of large-area anti-icing and de...

AI Technical Summary

Problems solved by technology

This method needs to add switchgear and change the structure of the transmission line. The power supply must be interrupted during the ice melting process. There are safety hazards in ice melting and extremely inconvenient operation. The cost of ice melting is high. Different degrees of ice-coated line sections and real-time anti-icing are not feasible for the switch breaker wires used in ultra-high voltage lines, especially the anti-icing of UHV split wires cannot be satisfied; A multi-split transmission line automatic melting ice method and its special switch, which is to install special switches in the substations at both ends of the ice-covered transmission line, and then manually remote control to issue instructions to make the special switch move to realize the transfer of all currents of the transmission line to ice-melting The sub-conductor of the sub-conductor, the sub-conductor generates heat and melts ice. This invention patent needs to manually judge whether there is ice on the field line, and needs the power dispatching department to cooperate with the adjustment of the line load. The degree of segmentation and real-time intelligent ice melting is required. It is difficult for technicians to rush to the scene to observe the ice situation and issue ice melting instructions for local ice-covered sections such as micro-climate and micro-meteorology.

Images