JP2693712B2 - Automatic salt damage cleaning system for transmission line towers - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic salt damage cleaning system for power transmission line towers, which automatically cleans and removes the insulators when it detects that salt has adhered to the insulators on the towers that support the transmission lines.

[0002]

2. Description of the Related Art When seawater splashes from a typhoon or the like and adheres to an insulator on a steel tower that supports a power transmission line, salt damage causes a decrease in the electrical insulating ability of the insulator, causing a ground fault or an interphase short circuit accident. Therefore, before the occurrence of a ground fault or an interphase short-circuit accident, it is necessary to detect that salt is attached to the insulator and wash the insulator to remove the salt. Conventionally, in this work, a worker climbed on a steel tower where power transmission was stopped and manually washed the insulators one by one while confirming the adhesion of salt.

[0003]

In such a conventional cleaning work, since the degree of salt damage of each insulator is not known in advance, it is necessary to climb all the steel towers to check the salt damage for cleaning, and it is dangerous and non-cleaning. There was a problem that it was efficient and required a lot of labor.

[0004]

Means for Solving the Problems Therefore, the above problems are solved.
Therefore, in the invention of claim 1, between the steel tower body and the power transmission line.
Outside the insulator fittings that are connected to the
The CT is attached to the side of the tower from the transmission line through the insulator.
Leak current detector that detects the leak current flowing to the
The leakage current is greater than or equal to the preset value
Salt damage detection circuit that outputs a salt damage generation signal to the
When the signal is output, the pressurizing pump is driven to the intake tank.
The stored cleaning water is sucked up and pressurized to automatically swing.
Transmission with a cleaning unit for cleaning the insulator
In the automatic salt damage cleaning system for the line tower, wind blows on the tower body.
Install a car, drive a generator, and use the generated power as a storage battery
It is stored, and the electric power drives the motor to drive the pressure pump.
It is characterized by driving the pump.

According to the invention of claim 2, the steel tower body and the power transmission line are connected.
Insulator connection metal fittings that are connected between and suspend and support transmission lines
The CT is attached to the outside, and from the power line through the insulator, the tower
Leakage current detection unit that detects the leakage current flowing to the body
If the leakage current is greater than or equal to the preset value,
If a salt damage detection circuit that outputs a salt damage
When a raw signal is output, the pressurizing pump is driven and the intake tank
The washing water stored in the
And a cleaning unit for cleaning the insulator by ejecting from the sledge
In the automatic salt damage cleaning system for transmission line towers, the tower itself
Install a solar cell in the and store the generated power in the storage battery
Then, the electric power drives the motor to drive the pressure pump.
Characterized by movement.

The invention of claim 3 is claim 1 or claim
In the invention of 2, the salt damage generation signal is sent to the optical fiber composite aerial
Send to the monitoring center via the ground line and
From the optical fiber composite ground wire
It is characterized by operating the cleaning unit based on the operation command.
did.

The invention of claim 4 is from claim 1 to claim 3.
In any of the inventions described above,
Install a water absorption pipe together with the ground electrode in the digging hole for burying the ground electrode.
It is buried and the groundwater is pumped up by a pump to collect water.
It was characterized by storing in Ku.

The invention of claim 5 is from claim 1 to claim 4.
In any one of the above inventions, the inner surface of the intake tank is a copper plate.
It is characterized by being formed more.

The invention of claim 6 is from claim 1 to claim 5.
In any one of the inventions, the washing water is frozen in the intake tank.
It is characterized in that an electrothermal heater for preventing binding is installed.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory diagram showing a configuration of an embodiment according to the present invention, and FIG. 2 is an enlarged view of a main part of FIG. In FIG.
The steel tower 1 supports the power lines 4 and 5 via the insulator chains 2 and 3, and also supports the optical fiber composite overhead ground wires 6 and 7 at the top of the steel tower 1. As shown in FIG. 2, in the insulator string 2, a plurality of suspension insulators 8 are vertically connected in series, the upper end is fixed to the steel tower 1, and the lower end supports the power line 4.

Further, a CT (current transformer) 11 is fitted on the outer peripheral portion of a connecting fitting 9 for connecting the suspension insulator 8 and the steel tower 1 on the uppermost stage. Due to this CT11, the splash of seawater adheres to the surface of the suspension insulator 8 and the insulating property of the suspension insulator 8 is deteriorated.
It is possible to detect the leakage current flowing from the tower to the steel tower 1.
The current value detected by CT11 is sent to the control panel 12.
A salt damage detection circuit is built in the control panel 12, and a salt damage generation signal is output when the detected leakage current value exceeds a preset current value. The salt damage occurrence signal is sent to the monitoring center 1 via the optical fiber composite overhead ground wire 6.
Sent to 3.

Similarly, in the insulator string 3 as well, the CT 11 is fitted to detect the occurrence of salt damage, and a salt damage generation signal is sent from the control panel 12 to the monitoring center 13 via the overhead ground wire 6. When the salt damage occurrence signal is sent, the monitoring center 13 displays it and issues an alarm. as a result,
If necessary, a cleaning start command is issued from the monitoring center 13 by the operator's operation and sent to the steel tower 1 via the optical fiber composite overhead ground wire 7. When a cleaning start command is input to the control panel 12 of the steel tower 1, the engine 33 or the motor 14 of the automatic start type connected to the control panel 12 is activated to drive the pressure pump 15.

The pressurizing pump 15 sucks in and pressurizes the wash water stored in the intake tank 16 and sends it to the nozzles 18 to 21 through the water supply pipe 17. The nozzles 18 and 19 and the nozzles 20 and 21 are arranged on both sides of the insulator series 2 and 3, respectively, and wash the insulator series 2 and 3 by ejecting pressurized cleaning water. At this time, the nozzles 18 to 21 automatically swing with the injection of cleaning water to perform cleaning evenly. The washing water in the water intake tank 16 is obtained by burying the water absorption pipe 25 together with the ground electrode 23 in the hole 24 drilled for burying the deeply buried ground electrode 23 for preventing lightning damage connected to the steel tower 1. The groundwater in the excavation hole 24 is pumped up and stored by the pump 26.

The pump 26 is driven by a motor 27,
The motor 27 is controlled by the control panel 12 to start and stop. Although not shown, the control of the motor 27 by the control panel 12 is such that a float switch or an electrode rod for detecting the water level is installed in the water intake tank 16, and when the water level falls below a predetermined level, it is detected and the motor 27 is started. Pump water.
When the water level reaches a predetermined level, the motor 27 is stopped. In this way, the amount of wash water in the intake tank 16 is maintained above a certain level. Also, a copper pipe is used for the water absorption pipe 25,
When the inner surface of the water intake tank 16 is a copper plate, it is possible to prevent algae from being generated and prevent spoilage of wash water by the sterilizing action of copper.

Although not shown, the water intake tank 16 is provided with an electric heater to heat the wash water to prevent freezing when the water temperature decreases in winter. It should be noted that if there is a city water facility nearby as a water source for the wash water, it is possible to use it. The control panel 12 and the motors 14 and 27 are powered by wind power. That is, as shown in the figure, the wind turbine 28 is installed in the steel tower 1, and the rotation of the wind turbine 28 is transmitted to the generator 29 to generate electric power. The generated electric power is once stored in the storage battery 32 connected via the rectifier circuit 31 and then used.

It is also possible to install and place a solar cell instead of the wind turbine generator. Furthermore, it is possible to generate a shortage of electric power by the engine 33.
Furthermore, the pump 26 can be driven by the engine 33. These are power sources and power sources when the tower 1 is installed in a remote place and commercial power cannot be obtained. When commercial power can be easily obtained, commercial power is used.

In this embodiment, the monitoring center 13 intensively monitors the occurrence of salt damage in each steel tower, and outputs a cleaning start command based on the monitoring result. As a result, it becomes possible for workers to monitor salt damage unattended without having to go to individual steel towers, and to carry out cleaning operations by remote control based on the monitoring results. In this way, it is possible to significantly reduce the labor and rationalize the maintenance work of the transmission line against salt damage.

In the above-mentioned embodiment, the salt damage of each steel tower 1 is monitored at the central monitoring center 13 and the cleaning command is sent from the monitoring center 13 to each steel tower 1. It is also possible to carry out cleaning. That is, when the occurrence of salt damage is detected in the control panel 12 of each steel tower 1, the motor 1 is directly fed from the control panel 12.
4 is started, the pump 15 is driven, and pressurization and water supply are started to perform cleaning. It is also possible to manually operate the control panel 12 to perform cleaning.

[0019]

As described above, according to the present invention, detection of salt damage is detected by using CT to detect the leakage current flowing in the connecting fitting of the insulator that connects the tower body and the power transmission line. Will be unmanned, and it will be possible to save labor in the work of monitoring the occurrence of salt damage. Further, when the occurrence of salt damage is detected, it is possible to intensively monitor the occurrence of salt damage for each steel tower by notifying the monitoring center via the optical fiber composite ground wire. Further, when the occurrence of salt damage is detected, the washing water stored in the intake tank is pressurized by the pressure pump and jetted from the nozzle to wash the insulator, so that the insulator cleaning can be unmanned. By using the excavation hole for burying the deeply buried ground electrode, it becomes easy to secure the cleaning water for cleaning the insulator. Here, in order to drive the pressurizing pump, by using an automatic start-up engine or by installing a wind turbine with a generator or a solar cell in a steel tower and storing the electric power obtained in the storage battery before driving the motor It becomes possible to operate in a place where commercial power is not available. Of course, where commercial power is available, the motor can be easily driven and operated by the commercial power. In addition, when cleaning is started by a start command from the monitoring center,
Centralized control of cleaning work is possible. In addition, the intake tank
By forming the inner surface of the plate with a copper plate, the generation of algae in the wash water
Water is prevented from being generated and the cleaning water is always kept clean.
Dripping. Furthermore, freeze prevention of washing water in the intake tank
By installing an electric heater for the
Can also be washed.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a configuration of an embodiment according to the present invention.

FIG. 2 is an enlarged view of a main part of FIG. 1;

[Explanation of symbols]

 1 Steel tower 2,3 Insulator series 4,5 Power line 6,7 Optical fiber composite overhead ground wire 8 Suspended insulator 9 Connection metal fittings 11 CT (current transformer) 12 Control panel 13 Monitoring center 14 Motor 15 Pressure pump 16 Water intake tank 17 Transmission Water pipe 18-21 Nozzle 23 Deeply buried ground electrode 24 Drilling hole 25 Water absorption pipe 26 Pump 27 Motor 28 Windmill 29 Generator 31 Rectifier circuit 32 Storage battery 33 Engine

Claims (6)

(57) [Claims] 1. A transmission that is connected between a tower main body and a power transmission line.
CT is attached to the outside of the connector of the insulator that suspends and supports the electric wire
Then, the leakage current flowing from the transmission line to the tower body through the insulator
The leak current detector that detects the current flow, and the detected leak current is greater than or equal to a preset value.
When a salt damage occurrence signal is output, the pressure pump is driven to extract water.
The cleaning water stored in the tank is sucked up and pressurized to automatically
In a salt damage automatic cleaning system for a transmission line steel tower , which comprises a cleaning unit that sprays from a shaking nozzle to clean the insulator , a wind turbine is installed in the main body of the steel tower to drive a generator to generate electricity.
The power is stored in the storage battery, and the electric power drives the motor.
Transmission line tower characterized by driving a pressure pump
Automatic salt damage cleaning system. 2. A transmission connected to a tower body and a power line.
CT is attached to the outside of the connector of the insulator that suspends and supports the electric wire
Then, the leakage current flowing from the transmission line to the tower body through the insulator
The leak current detector that detects the current flow, and the detected leak current is greater than or equal to a preset value.
When a salt damage occurrence signal is output, the pressure pump is driven to extract water.
The cleaning water stored in the tank is sucked up and pressurized to automatically
In a salt damage automatic cleaning system for a transmission line steel tower , which comprises a cleaning unit that sprays from a swing nozzle to clean the insulator , a solar battery is installed in the steel tower body to store the generated power.
The electric power is used to drive the motor to drive the pressurizing port.
Automatic salt damage of transmission line tower characterized by driving pump
Cleaning system. 3. The power transmission line iron according to claim 1 or 2.
In the automatic salt damage cleaning system for the tower, the salt damage generation signal is monitored through the optical fiber composite ground wire.
The optical fiber composite overhead wire.
The cleaning unit based on the received operation command
Automatic salt damage cleaning system for power transmission line towers. 4. The method according to claim 1, wherein
In the automatic salt damage cleaning system for power transmission line towers described above, it is used for burial holes for burying deep ground electrodes connected to the tower body.
The water absorption pipe is buried together with the ground electrode, and the
Characterized by pumping up sewage and storing it in an intake tank
Automatic salt damage cleaning system for transmission line towers. 5. The method according to any one of claims 1 to 4.
In the automatic salt damage cleaning system for a power transmission line tower described above, the inner surface of the water intake tank is formed of a copper plate.
Automatic salt damage cleaning system for power transmission line towers. 6. The method according to any one of claims 1 to 5.
In the automatic salt damage cleaning system for power transmission line towers, an electric heater is installed in the water intake tank to prevent freezing of the cleaning water.
Automatic salt damage cleaning system for transmission line towers
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