CN-122025316-A - Intelligent anti-icing composite insulator system and deicing method thereof

CN122025316ACN 122025316 ACN122025316 ACN 122025316ACN-122025316-A

Abstract

The invention discloses an intelligent anti-icing composite insulator system and a deicing method thereof, and belongs to the technical field of high-voltage transmission equipment; the power management mechanism is connected with the power generation mechanism and the deicing mechanism, the deicing mechanism comprises a heating mechanism and an icing monitoring feedback mechanism, the icing monitoring feedback mechanism comprises an impedance analysis module and is used for monitoring complex impedance parameters of the insulator in real time, and the power management mechanism is internally provided with a power adjustment module which is used for adjusting heating power into a first power mode, a second power mode or a third power mode according to a comparison result of the complex impedance parameters and a preset threshold interval. The invention realizes the closed loop integration of the self-sufficient energy, the intelligent sensing of the icing state and the graded heating control, can automatically match the heating power according to the icing degree, remarkably improves the energy utilization efficiency and the deicing reliability, and is particularly suitable for the power transmission line in the remote unattended area.

Inventors

LIU HONGBO
CHEN HAONAN
CHEN ZIYUN
ZHANG HAONING
CUI ZIXUAN
Xie Fusen
GUO TIANRUI
QI ZIYU
ZHANG ZIRUI
LIU MENGYAN

Assignees

河北工业大学

Dates

Publication Date: 20260512
Application Date: 20260331

Claims (10)

1. The intelligent anti-icing composite insulator system is characterized by comprising a power generation mechanism, a deicing mechanism and a power management mechanism, wherein the power generation mechanism comprises an energy collection module, the energy collection module is used for converting vibration caused by an external environment into electric energy, the deicing mechanism comprises a heating mechanism and an icing monitoring feedback mechanism, and the power management mechanism is respectively connected with the power generation mechanism and the deicing mechanism and is used for receiving and storing the electric energy from the power generation mechanism and controlling the power supply of the heating mechanism according to feedback signals transmitted by the icing monitoring feedback mechanism; The power management mechanism comprises a power adjustment module which is in communication connection with the impedance analysis module and is used for adjusting heating power to at least one of a first power mode, a second power mode and a third power mode according to a comparison result between the complex impedance parameter and a preset threshold interval.
2. The intelligent anti-icing composite insulator system according to claim 1, wherein the energy collection module is specifically a nano friction generator, and the nano friction generator is connected with the composite insulator through a waterproof packaging shell.
3. The intelligent anti-icing composite insulator system according to claim 2, wherein an arc-shaped buffer pad is arranged between the waterproof packaging shell and the composite insulator.
4. The intelligent anti-icing composite insulator system according to claim 1, wherein the impedance analysis module comprises at least two voltage sensors, at least one current sensor and a complex impedance calculation module, wherein the voltage sensors are arranged at two ends of a composite insulator core rod, the current sensors are arranged on the composite insulator core rod in a surrounding mode, and the complex impedance calculation module is connected with the voltage sensors and the current sensors and used for converting synchronously acquired voltage and current signals into complex impedance parameters.
5. The intelligent anti-icing composite insulator system according to claim 1, wherein the heating mechanism is a heating resistance wire, and the heating resistance wire is embedded into the umbrella skirt of the composite insulator in a surrounding mode and is used for converting electric energy into heat energy and uniformly distributing the heat energy on the surface of the composite insulator.
6. The intelligent anti-icing composite insulator system according to claim 1, wherein the power management mechanism further comprises a rectifying and filtering module, an energy storage battery module and an inductive switch, wherein the rectifying and filtering module is connected with an output end of the power generation mechanism and used for converting alternating current into direct current, the energy storage battery module is connected with the rectifying and filtering module and used for storing electric energy, and the inductive switch is connected between the energy storage battery module and the heating mechanism and used for controlling power supply on-off according to a feedback signal.
7. The intelligent anti-icing composite insulation system of claim 1, wherein the first power mode corresponds to a low duty cycle heating for thermal insulation and anti-icing conditions; the second power mode corresponds to a medium duty cycle heating for medium icing conditions; The third power mode corresponds to high duty cycle heating for severe ice-over conditions.
8. The intelligent anti-icing composite insulator system according to claim 1, wherein the power management mechanism is of a sealed box structure and is integrally arranged in an insulator core rod, and the box is made of weather-resistant materials.
9. An intelligent anti-icing composite insulator system deicing method is characterized by comprising the following steps: the mechanical energy generated by the composite insulator due to the environmental vibration is collected through the power generation mechanism and is converted into electric energy to be stored; monitoring complex impedance parameters of the composite insulator in real time through an impedance analysis module, comparing the complex impedance parameters with a plurality of preset threshold intervals, and judging the icing degree grade; And according to the ice coating degree grade, a corresponding power mode is selected to supply power to the heating mechanism through a power regulation module in the power management mechanism so as to carry out deicing or anti-icing operation matched with the ice coating degree.
10. The method for deicing of an intelligent anti-icing composite insulation subsystem of claim 9, wherein the selecting of the corresponding power mode to power the heating mechanism based on the level of icing comprises: When the complex impedance parameter falls into a first threshold value interval, determining that the risk of no ice coating or slight ice coating is extremely low, and keeping the inductive switch to be disconnected, wherein the system is in a standby monitoring state; When the complex impedance parameter falls into a second threshold value interval, judging that the complex impedance parameter is in a light icing or heat-preserving and anti-icing state, starting a first power mode, and heating with a low duty ratio; when the complex impedance parameter falls into a third threshold value interval, judging a medium icing state, starting a second power mode, and heating at a medium duty ratio; And when the complex impedance parameter exceeds a third threshold value interval, judging that the complex impedance parameter is in a severe icing state, starting a third power mode, and heating at a high duty ratio.

Description

Intelligent anti-icing composite insulator system and deicing method thereof Technical Field The invention belongs to the technical field of high-voltage power transmission equipment, and particularly relates to an intelligent anti-icing composite insulator system and a deicing method thereof. Background The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art. The insulator is used as key equipment in a power transmission system, and is extremely easy to generate an icing phenomenon in a cold and humid environment, so that the insulation performance of the insulator can be obviously reduced, the mechanical load can be greatly increased, and a flashover accident can be caused when the insulator is serious, so that a serious threat is formed to the safe and stable operation of a power grid. The traditional anti-icing and deicing method for the insulator mainly comprises a coating anti-icing method, a mechanical deicing method and a thermal deicing method. In the practical operation process, the anti-icing method of the coating layer often needs to reduce the adhesive force of the ice layer by coating hydrophobic/anti-icing materials (such as RTV, PRTV and super-hydrophobic coating) on the surface of the insulator, so that the ice layer is easier to naturally drop, but the coating layer is easy to age and needs to be maintained regularly, and the anti-icing effect is limited in extreme ice and snow weather, and the ice layer still can be formed. The mechanical deicing method often requires a large number of workers to ascend, and the method is not only influenced by weather conditions, but also is time-consuming and labor-consuming, and has quite high potential safety hazards. At present, thermal deicing technology is used as a common deicing means, and a continuous external energy supply is often required in the process of performing anti-icing deicing operation, and the stability of the external energy supply (such as a power grid and the like) affects deicing efficiency under extreme environmental conditions. And the system which depends on external energy supply needs to be maintained regularly to ensure long-term stable operation, and when the weather environment is severe or the system is far away from a power grid or an unattended remote area, the maintenance of the system becomes difficult, and the stable operation is difficult to realize. And the running costs required for continuous external energy supply are high. In addition, most of the existing thermal deicing systems lack accurate feedback control, constant power heating is often adopted, overheating and energy waste are caused, the operation cost is high, and intelligent operation and maintenance are difficult to realize. Disclosure of Invention The invention aims to overcome the defects in the prior art and provide an intelligent anti-icing composite insulator system and a deicing method thereof, which organically integrate energy collection, ice coating state sensing and fine control of heating power to form a set of intelligent anti-icing composite insulator system capable of self-powering and self-adaptively adjusting the heating power. In order to achieve the above object, the present invention is realized by the following technical scheme: The technical scheme of the invention provides an intelligent anti-icing composite insulator system, which comprises a power generation mechanism, a deicing mechanism and a power management mechanism, wherein the power generation mechanism comprises an energy collection module, the energy collection module is used for converting vibration caused by external environment into electric energy, the deicing mechanism comprises a heating mechanism and an icing monitoring feedback mechanism, and the power management mechanism is respectively connected with the power generation mechanism and the deicing mechanism and used for receiving and storing the electric energy from the power generation mechanism and controlling the power supply of the heating mechanism according to feedback signals transmitted by the icing monitoring feedback mechanism; The power management mechanism comprises a power adjustment module which is in communication connection with the impedance analysis module and is used for adjusting heating power to at least one of a first power mode, a second power mode and a third power mode according to a comparison result between the complex impedance parameter and a preset threshold interval. In at least one embodiment, the energy collection module is specifically a nano friction generator, and the nano friction generator is connected with the composite insulator through a waterproof packaging shell. In at least one embodiment, an arcuate bumper pad is disposed between the waterproof enclosure and the composite insulator. In at least one embodiment, the impedance analysis module comprises at least two voltage sensors,