CN103390874A - Deicing method for deicing optical fiber composite overhead ground wire wound by insulated wires - Google Patents

Abstract

The invention discloses a deicing method for a deicing optical fiber composite overhead ground wire wound by insulated wires. The method comprises steps as follows: (1) configuring the insulated wires; (2) winding the insulated wires; (3) connecting core wire brackets; (4) grouping the insulated wires; (5) configuring a DC (direct current) deicing device; (6) starting the DC deicing device; (7) observing icing, and closing the DC deicing device after the icing falls off; (8) disconnecting the insulated wires which are connected to the DC deicing device, and grounding the insulated wires; and (9) grounding the parallel-connection ends of the insulated wires in the step (4). The method has the advantages as follows: (1) the method is simple and easy to operate; (2) normal functions of the optical fiber composite overhead ground wire during deicing can still be maintained, and other operations on the optical fiber composite overhead ground wire are not influenced; and (3) large direct current is used for melting ice, so that the labor intensity of manual deicing can be greatly reduced, and the deicing safety is improved.

Description

Melting method for ice-melting composite optical fiber overhead ground wire with winding insulated conductors

technical field

The invention belongs to the technical field of electrical engineering, and in particular relates to a method for melting ice of an ice-melting composite optical fiber overhead ground wire wound with insulated wires.

Background technique

When encountering severe freezing disasters, the optical fiber composite overhead ground wire frequently breaks on the transmission line, causing interruption of power communication, and also causes a short circuit due to the residual optical fiber composite overhead ground wire falling on the conductor, which in turn causes line tripping accidents and affects normal power supply. Therefore, it is necessary to perform deicing treatment on the optical fiber composite overhead ground wire when the transmission line is covered with ice. In recent years, heating and deicing has gradually become the mainstream ice melting method for power grids. This heating treatment method is to melt the ice by applying a large flow of alternating current or a large flow of direct current to the conductors and ground wires of the transmission line. However, since the optical fiber composite overhead ground wire is usually grounded tower by tower and is not insulated from the ground, it is impossible to apply voltage to heat and melt the ice.

Contents of the invention

The technical problem to be solved by the present invention is to provide an ice-melting method for thawing ice-melting optical fiber composite overhead ground wires by winding insulated wires in view of the backwardness of the current optical fiber composite overhead ground wire melting technology. The line melting work can smoothly achieve effective deicing and resist the icing disaster of the optical fiber composite overhead ground line.

The technical solution of the present invention is that the ice-melting method for melting an ice-melting optical fiber composite overhead ground wire wrapped with an insulated wire includes the following steps:

(1) Equipped with ice-melting optical fiber composite overhead ground wires and insulated wires wound with insulated wires;

(2) Replace the ice-melting optical fiber composite overhead ground wire of the transmission line with the ice-melting optical fiber composite overhead ground wire configured in step (1), or, along the ice-melting optical fiber composite overhead ground wire Winding at least two insulated wires arranged in parallel step (1), so that the ice-melting optical fiber composite overhead ground wire becomes an ice-melting optical fiber composite overhead ground wire wrapped with insulated wires;

(3) Connect the metal core wire of the ice-melting optical fiber composite overhead ground wire obtained in step (2) to the metal ground wire support of the iron tower of the above-mentioned transmission line;

(4) Divide the above-mentioned insulated wires wound on the composite overhead ground wire of the ice-melting optical fiber into two groups, and connect any end of the two groups of insulated wires in parallel in the same direction;

(5) Equipped with a DC ice-melting device. Connect the other end of one end of the parallel connection of the two sets of insulated wires described in step (4) to the configured DC ice-melting device, wherein one set of insulated wires is connected to the positive pole of the DC ice-melting device, the other Negative electrode of DC ice melting device;

(6) Start the DC ice-melting device, adjust the DC current output value of the DC ice-melting device to the melting value, and record the time when the DC ice-melting device starts melting ice and the output DC current value of the DC ice-melting device ;

(7) Observe the ice coating on the ice-melting optical fiber composite overhead ground wire wrapped with insulated wires, and when the observed ice is completely detached from the ice-melting optical fiber composite overhead ground wire, turn off the DC ice melting device, recording the end melting time of the DC deicing device;

(8) Disconnect the two sets of insulated wires connected to the DC ice-melting device in step (5), and connect the two sets of insulated wires to the ground in parallel;

(9) Ground one end of the parallel connection of the two groups of insulated wires mentioned in step (4).

The beneficial effects of the present invention are:

1) The ice melting method provided is simple and easy to operate;

2) The normal function of the optical fiber composite overhead ground wire is still maintained when the ice is melted, and other operations on the optical fiber composite overhead ground wire are not affected;

3) The use of DC high current to melt ice can greatly reduce the labor intensity of manual deicing work and improve the safety of the ice melting process.

Detailed ways

Example 1:

(1) Equipped with ice-melting optical fiber composite overhead ground wires and insulated wires wound with insulated wires;

(2) Replace the ice-melting optical fiber composite overhead ground wire of the power transmission line with the ice-melting optical fiber composite overhead ground wire configured in step (1), so that the ice-melting optical fiber composite overhead ground wire becomes a winding Ice-melting optical fiber composite overhead ground wire with insulated conductors;

(3) Connect the metal core wire of the ice-melting optical fiber composite overhead ground wire obtained in step (2) to the metal ground wire support of the iron tower of the above-mentioned transmission line;

(4) Divide the above-mentioned insulated wires wound on the composite overhead ground wire of the ice-melting optical fiber into two groups, and connect any end of the two groups of insulated wires in parallel in the same direction;

(5) Equipped with a DC ice-melting device. Connect the other end of one end of the parallel connection of the two sets of insulated wires described in step (4) to the configured DC ice-melting device, wherein one set of insulated wires is connected to the positive pole of the DC ice-melting device, the other Negative electrode of DC ice melting device;

(6) Start the DC ice-melting device, and adjust the DC current output value of the DC ice-melting device to the ice-melting value;

(7) Observe the ice coating on the ice-melting optical fiber composite overhead ground wire wrapped with insulated wires, and when the observed ice is completely detached from the ice-melting optical fiber composite overhead ground wire, turn off the DC ice melting device;

(8) Disconnect the two sets of insulated wires connected to the DC ice-melting device in step (5), and connect the two sets of insulated wires to the ground in parallel;

(9) Ground one end of the parallel connection of the two groups of insulated wires mentioned in step (4).

Example 2:

Step (1) is the same as embodiment 1:

(2) Wrap at least two insulated conductors arranged in parallel along the optical fiber composite overhead ground wire to be melted in step (1) along the power transmission line, so that the optical fiber composite overhead ground wire to be ice-melted becomes a melting ice Optical fiber composite overhead ground wire;

Steps (3) to (9) are the same as in Example 1.

Claims (1)

1. A method for melting the ice of an ice-melting optical fiber composite overhead ground wire wound with an insulated wire, the method comprising the steps of: (1) Equipped with ice-melting optical fiber composite overhead ground wires and insulated wires wound with insulated wires; (2) Replace the ice-melting optical fiber composite overhead ground wire of the transmission line with the ice-melting optical fiber composite overhead ground wire configured in step (1), or the ice-melting optical fiber composite overhead ground wire along the transmission line The ground wire is wound with at least two insulated wires arranged in parallel step (1), so that the ice-melting optical fiber composite overhead ground wire becomes an ice-melting optical fiber composite overhead ground wire wrapped with insulated wires; (3) Connect the metal core wire of the ice-melting optical fiber composite overhead ground wire obtained in step (2) to the metal ground wire support of the iron tower of the above-mentioned transmission line; (4) Divide the above-mentioned insulated wires wound on the composite overhead ground wire of the ice-melting optical fiber into two groups, and connect any end of the two groups of insulated wires in parallel in the same direction; (5) Configure a DC ice-melting device, connect the two sets of insulated wires in step (4) in parallel and connect the other end to the configured DC ice-melting device, one of the insulated wires is connected to the DC ice-melting device The positive pole of the other set of insulated wires is connected to the negative pole of the DC ice-melting device; (6) Start the DC ice-melting device, adjust the DC current output value of the DC ice-melting device to the melting value, and record the time when the DC ice-melting device starts melting ice and the output DC current value of the DC ice-melting device ; (7) Observe the ice coating on the ice-melting optical fiber composite overhead ground wire wrapped with insulated wires, and when the observed ice is completely detached from the ice-melting optical fiber composite overhead ground wire, turn off the DC ice melting device, recording the end melting time of the DC deicing device; (8) Disconnect the two sets of insulated wires connected to the DC ice-melting device in step (5), and connect the two sets of insulated wires to the ground in parallel; (9) Ground one end of the parallel connection of the two groups of insulated wires mentioned in step (4).