Ice melting system and ice melting method
By combining rectifier transformers and phase selectors, and utilizing the line's own reactance for voltage division and current sharing, the problem of low utilization rate of the ice-melting device is solved, resulting in reduced cost and size, and improved system efficiency and control accuracy.
CN120545905BActive Publication Date: 2026-07-24NR ELECTRIC CO LTD +2
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- NR ELECTRIC CO LTD
- Filing Date
- 2025-04-24
- Publication Date
- 2026-07-24
AI Technical Summary
Technical Problem
The low utilization rate of de-icing devices in power transmission systems leads to increased costs and size.
Method used
The ice-melting system, composed of a rectifier transformer and a phase selector, utilizes the line's own reactance for voltage division and current sharing through parallel connection of rectifier modules and configuration of the phase selector, thus avoiding the use of reactors.
Benefits of technology
It reduces the cost and size of the ice melting system, while improving the system utilization and control accuracy, simplifying the protection logic, and reducing circulation losses.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN120545905B_ABST
Abstract
The application provides a de-icing system and a de-icing method. The de-icing system comprises: a rectifier transformer comprising at least two parallel rectifier modules; and a phase selector, one phase selector being connected to each rectifier module, each phase selector comprising: a positive phase selection module configured to connect the positive pole of the rectifier module to a non-de-icing phase line in a three-phase transmission line; and a negative phase selection module configured to commonly connect the negative poles of the rectifier modules to a target de-icing phase line in the three-phase transmission line; wherein the positive poles of different rectifier modules are connected to different non-de-icing phase lines, so that the direct current output by different rectifier modules flows into the target de-icing phase line through different non-de-icing phase lines at the same time, and the target de-icing phase line is de-iced. The application can select any phase as the target de-icing phase line in the line to be de-iced through the phase selector, utilize the line self-reactance to bear the voltage division and current sharing effect, realize line de-icing, and reduce the redundancy and complexity of the power transmission system.
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Citation Information
Patent Citations
CN101316033A
CN101540491A