KR101932580B1 - Diagnosis system for underground transmission line - Google Patents

Abstract

The present invention relates to a diagnosis system for a super ultrahigh voltage underground transmission line. More specifically, the present invention relates to a diagnosis system for a super ultrahigh voltage underground transmission line which can prevent an underground transmission line from being flooded by ascending and descending the underground transmission line according to a water level change in a power cable while measuring partial discharge, distribution temperature, modification, and flooding of the underground transmission line over all sections of the underground transmission line and transmitting the same to an upper system using wired/wireless communication networks so as to remotely determine a fault state and a transmission capacity of the underground transmission line, and to monitor and control an environmental facility in the power cable.

Description

[0001] DIAGNOSIS SYSTEM FOR UNDERGROUND TRANSMISSION LINE [0002]

[0001] The present invention relates to a diagnostic system for an ultra high voltage underground transmission line in the field of underground transmission technology, and more particularly to a system for measuring a partial discharge, distribution temperature, deformation and flooding of an underground transmission line over an entire underground transmission line, It is possible to monitor and control the environmental facilities in the electric power facilities, and it is also possible to monitor and control the environmental facilities in the electric power facilities. To a diagnosis system for a super high voltage underground transmission line for preventing the underground transmission line from being flooded.

An underground transmission line is a power cable that transmits a super high voltage and is installed in a power port.

Conventionally, in order to check for an accident in an underground transmission line, an inspector enters and exits the power transmission line, and visually inspects the underground transmission line or performs measurement in the form of measurement equipment.

However, due to the characteristics of the underground pipe, there are problems in safety of the inspectors and reliability of the work, and there is a problem of human consumption due to the necessity of carrying out the preventive maintenance management work regularly.

In addition, even if the power facilities such as the electric power facilities and the electric lamps do not operate normally, there is a problem that the operator can not confirm the electric power without accessing the electric power facilities directly.

A Korean Patent Registration No. 10-1183587 (Sept. 17, 2012) discloses a system and method for monitoring and monitoring ultra high voltage underground transmission lines.

However, such a conventional ultra high voltage underground transmission line supervisory diagnostic system can not easily cope with a change in the water level in the power port, so there is a problem that the underground transmission line is flooded.

Korea Patent Registration No. 10-1183587 (2012.09.17) 'Supervision under high voltage underground transmission line system and method'

The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a method of measuring partial discharge, distribution temperature, deformation and immersion of an underground transmission line over an entire underground transmission line, It is possible to monitor and control the environmental facilities in the electric power facilities by determining whether the transmission line is faulty and transmission capacity remotely by transmitting it to the upper system, And to provide a diagnostic system for a super high voltage underground transmission line for preventing a transmission line from being flooded.

The problems to be solved by the present invention are not limited to those mentioned above, and other solutions not mentioned can be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided an apparatus for detecting an underground transmission line. A data collection device 200 for collecting sensing information of the underground transmission line sensed by the sensor unit 100; An upper server (300) for receiving the sensing information from the data collection device (200) and monitoring the status of the underground transmission line based on the sensing information; And a control unit (120) for generating at least one operation state information of at least one of an operation state of a ventilation facility, which is a power facility of a power source, and an operation state of an illumination, wherein the data collection device (200) Wherein the upper server (300) further comprises a control unit (300) for generating a control signal for controlling the power plant, the diagnosis system comprising: And the water immersion prevention part 400 is disposed on one side of the underground transmission line and is provided with a guide extending upward from the bottom surface in the power hole, Bar 410; A support member (420) for supporting the underground transmission line; Connecting means (430) for connecting the support member (420) to the guide bar (410) so as to be able to move up and down; The support member 420 is coupled to the guide bar 410 so as to be positioned below the support member 420 so as to be raised and lowered according to a change in the water level in the power hole, A float 440 for causing the flow path to rise and fall; And a support spring 470 coupled to the outer side of the guide bar 410 to be positioned below the float 440 and supporting the float 440 and the ground transmission line from the bottom of the power hole The connecting means 430 includes a pair of side bars 432 disposed on both sides of the guide bar 410 and a connecting bar 433 connecting the front ends of the pair of side bars 432, A guide member 431 coupled to the outside of the guide bar 410; A binding bar 434 extending rearward from a rear end of the pair of side bars 432; And a coupling member (435) for coupling the support member (420) to the coupling bar (434). The diagnostic system of the ultra high voltage underground transmission line is provided.

According to the present invention, it is possible to construct a remote inspection system capable of diagnosing an underground transmission line throughout the entire length of an underground transmission line without inserting the inspectors, Thereby preventing the underground transmission line from being flooded.

The effects of the present invention are not limited to those mentioned above, and other solutions not mentioned may be clearly understood by those skilled in the art from the following description.

1 is a conceptual diagram schematically showing a diagnostic system for a super high voltage underground transmission line according to the present invention.
2 is a block diagram showing a data collecting apparatus in a diagnostic system for a super high voltage underground transmission line according to the present invention.
3 is a front view showing a state in which a flooding prevention unit is provided in a diagnostic system for a super high voltage underground transmission line according to the present invention.
4 is a partially enlarged cross-sectional view showing the fixing means in Fig.
And
FIG. 5 is an exploded perspective view showing the state of engagement between the support member and the connection means in FIG. 3;

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Referring to FIG. 1, the diagnostic system for a super high voltage underground transmission line according to the present invention includes a sensor unit 100, a control unit 120, a data collecting apparatus 200, and an upper server 300.

The sensor unit 100 monitors the state of the power transmission path and the environment of the power transmission line. The sensor unit 100 includes a PDMS (Partial Discharge Monitoring Sensor) for sensing the partial discharge of the underground transmission line, a temperature sensor for measuring the distribution temperature of the underground transmission line, an external factor of the underground transmission line And a submersion sensor that detects the submergence of the underground transmission line.

The partial discharge detection sensor detects the partial discharge in the underground transmission line. It is installed in the conductor part of the underground transmission line, and is placed in the ground transmission line to be monitored at a predetermined interval. Conventionally, the partial discharge is monitored only at the connection portion of the underground transmission line where the partial discharge is likely to occur. However, the reliability of the partial discharge monitoring system can be improved by monitoring and installing the partial discharge monitoring sensor over the entire underground transmission line.

The temperature sensor and the strain sensor may be equipped with a distributed strain and temperature sensor (DSTS) in the form of an optical cable installed together with an underground transmission line. In this case, the detection of temperature and deformation is not a point, but a continuous distribution throughout the optical cable.

The submersion sensor and the water level sensor are used to monitor the submergence of underground transmission line. The immersion sensor and the water level sensor can be selectively used or can be used in parallel. The water immersion sensor is attached to the surface of the underground transmission line, and the water level sensor can be attached to the underground transmission line or attached at a predetermined height from the surface of the power source.

The control unit 120 senses the operation state of the ventilation equipment, the lighting equipment, and the opening and closing states of the doors, which are the main facilities of the underground power source, generates the operation state information thereof, receives the control signal from the data collection device 200, The operation can be controlled.

The data collecting apparatus 200 collects the sensing information of the sensor unit 100 and the operation state information of the controller 120 and transmits the collected information to the upper server 300. The data collecting apparatus 200 is provided with a plurality of power sources at predetermined intervals so as to transmit the respective positions of the sensor unit 100 and the sensed information measured.

The data collecting apparatus 200 and the sensor unit 100 can communicate in a sleep & wake up manner at predetermined time intervals. This is because the data collecting device 200, which can always receive power, transmits a synchronization packet to the sensor unit 100, and the sensors included in the sensor unit 100 operate in synchronization with the synchronization packet. The sleep time can be set by the operator through the upper server 300, and the sensor unit 100 receives the synchronization packet after wake up and transmits the sensing information to the data collection device 200.

The upper server 300 receives the sensing information and operation state information collected by the data collecting apparatus 200 and can monitor the state of the underground transmission line and the operation state of the power saving facility based on the received information. The upper server 300 stores sensing information and operation status information in a database and manages the information, and provides a diagnostic environment for an underground transmission line using stored information.

For example, it is possible to monitor the partial discharge of the underground transmission line, to provide the operator with diagnostic information about the partial discharge, to calculate the transmission capacity of the underground transmission line based on the temperature sensing information of the underground transmission line, have.

In addition, by using flood sensor and water level sensor, it is possible to monitor the possibility of inundation in the electric power pit and utilize it to prevent flood damage in advance. That is, the operator can determine whether the underground transmission line is inspected and the equipment is repaired by utilizing the underground transmission line diagnosis system based on the sensing information received from the data collection device 200.

In addition, the operation status of each facility can be monitored and the operation can be controlled based on the operation state information of the power saving facility received from the control unit 120. For example, in the case of the ventilation system, the concentration (ppm) of CO, CO2, H2S, CH4, etc. of the power source is higher than a certain level or operates at predetermined time intervals. If not, the ventilation system can be remotely operated or the ventilation system can be checked and repaired.

The upper server 300 generates a control signal for controlling the operation of each facility and transmits the control signal to the control unit 120 through the data collection device 200 to determine whether each facility is operated.

The upper server functions as an HMI (Human Machine Interface) that provides an interface for the operator to control the electric power facilities. When a partial discharge occurs in the underground transmission line, the transmission capacity is not constant, or the underground transmission line is flooded Or an alarm signal can be output when a fault occurs in the electric power facility. The alarm signal may be implemented by outputting a warning message on the display screen, or by transmitting the message to the operator's e-mail or cellular phone registered in the database.

Referring to FIG. 2, the data collecting apparatus 200 includes a data collecting unit 210, a data transmitting unit 220, a central processing unit 230, and a power supplying unit 240.

The data collection unit 210 is connected to the sensor unit 100 and the control unit 120 and collects sensing information and operation state information and transmits the control signal received from the upper server 300 to the control unit 120 . At this time, the data collecting unit 210 and the sensor unit 100 may perform wired or wireless communication. When the wired communication is performed, the data collecting unit 210 and the sensor unit 100 may be connected by an analog signal line, or may use RS232, RS422, RS485 serial communication, or Ethernet communication, Wireless LAN, Zigbee or Bluetooth can be used.

The data transmission unit 220 is connected to the upper server 300 and transmits sensing information and operation state information and receives a control signal from the upper server 300.

The data transfer unit 220 and the upper server 300 may be connected to each other through a local area network (LAN), and may be an Ethernet based TCP / IP protocol.

In addition, IEC61850, a standard for substation communication, can be applied.

The central processing unit 230 stores sensing information and operation state information in a storage unit (not shown), and processes data to be transmitted and received by the data collecting unit 210 and the data transmitting unit 220 according to a communication standard. The central processing unit 230 generates a synchronization packet, transmits the generated synchronization packet to the sensor through the data collecting unit 210, and collects the sensing information according to the sleep & wake up method.

The power supply unit 240 plays a role of supplying power so that each functional unit of the data collection device 200 can operate.

At this time, it is preferable that the power supply unit 240 is a rechargeable battery that can be charged and discharged. In the case of charging the power supply unit 240, a battery floating charging method can be used.

In the case where the data collecting apparatus 200 performs communication with the sensor unit 100, the control unit 120, or the upper server, it may be influenced by the environment of the power port. Particularly, Can be exposed. In the case of the floating charging method, since the power source can be charged through the voltage lower than the equal charging method, there is an effect that the amount of noise generated in the communication environment can be further reduced than in the equal charging method.

Also, the power supply unit 240 can be charged through a battery energy storage system (BESS). The battery energy storage system (BESS) means a facility for storing the nighttime power by using a battery in order to equalize the weekly power load relatively higher than the nighttime, and to utilize it during the daytime. The battery power storage system can be installed directly in an area where electric power is required, and in the present invention, it can be installed in a power port to supply charging power to the data collection device 200.

As a result, the present invention extends the surveillance region of the underground transmission line from the node concept to the line region and remotely monitors the occurrence of partial discharge, distribution temperature of underground transmission line, , And can be used to build an integrated management system that can control power distribution facilities along with monitoring of underground transmission lines.

Further, by using a battery electric power storage system, the power charged at night can be used during the daytime, thereby contributing to equalizing the power load of daytime and nighttime.

The diagnostic system of the ultra high voltage underground transmission line according to the present invention further includes an immersion prevention unit 400 for lifting and lowering the underground transmission line according to a change in the water level in the power source, as shown in FIGS.

The submergence preventing part 400 can be arranged in plural along the longitudinal direction of the underground transmission line, and the underground transmission line is raised and lowered according to the change in the water level in the power line, thereby preventing the underground transmission line from being flooded.

The immersion prevention unit 400 is disposed on one side of the underground transmission line and includes a guide bar 410 extending upward from a bottom surface of the power source, a support member 420 supporting the underground transmission line, The guide bar 410 includes a connecting means 430 for vertically connecting the guide bar 410 to the guide bar 410 and a float 440 which is coupled to the outside of the guide bar 410 so as to be positioned below the support member 420, ).

The guide bar 410 is disposed at one side of the underground transmission line about the longitudinal direction of the underground transmission line.

And a coupling pipe 450 to which a lower portion of the guide bar 410 is coupled may be provided on the bottom surface of the power hole.

It is preferable that a thread is formed on the inner circumferential surface of the coupling tube 450 and a screw thread is formed on the lower outer circumferential surface of the guide bar 410 and screwed to the coupling tube 450.

The immersion prevention unit 400 may further include fixing means 460 for fixing the upper portion of the guide bar 410 to the upper surface in the power electrode.

The fixing means 460 includes a fixing plate 461 which is in contact with the upper surface of the electric power tool, a casing 461 which extends downward from the fixing plate 461, (462), and a spring (463) received inside the casing (462) so as to be positioned above the guide bar (410).

The casing 462 has guide holes 462a formed on both sides thereof extending upward from the bottom.

The guide bar 410 is formed with coupling protrusions 411 protruding outward from both sides and protruding to the outside of the casing 462 through the guide holes 462a.

The securing means 460 may further include an escape preventing member 464 for preventing the escape of the casing 462 from the guide bar 410.

The casing 462 is threaded on the outer circumferential surface of the guide bar 410 while the release preventing member 464 is threaded on the inner circumferential surface of the casing 462 and screwed to the outside of the casing 462 so as to be positioned below the engaging projection 411. [ Thereby preventing the casing 462 from coming off.

The release preventing member 464 can adjust the length of the casing 462 protruding from the guide bar 410 while being lifted up and down in the longitudinal direction of the casing 462 according to the rotation.

The supporting member 420 has a rectangular shape in which a groove portion 421 through which an underground transmission line is led is formed in an upper portion.

The groove portion 421 extends in the front-rear direction of the support member 420, that is, in the longitudinal direction of the underground transmission line, and has a width and depth sufficient to prevent the underground transmission line, .

The connecting means 430 includes a pair of side bars 432 disposed on both sides of the guide bar 410 and a connecting bar 433 connecting the front ends of the pair of side bars 432, A binding bar 434 extending rearward from the rear end of the pair of side bars 432 and a binding member 435 for binding the supporting member 420 to the binding bar 433, .

The binding bars 433 are threaded on the outer peripheral surface and protrude outward through both sides of the supporting member 420. The binding members 435 are threaded on the inner peripheral surface and screwed to the outside of the binding bars 433 .

The guide member 431 has a U-shape in which a pair of side bars 432 and a connecting bar 433 are integrally connected to each other and opens rearward, and is coupled to the outside of the underground transmission line so as to be able to move up and down , And the rear side is blocked by the supporting member (420).

The float 440 may be made of a variety of materials that can float on the water and preferably has buoyancy sufficient to support the underground transmission line.

Accordingly, the float 440 can be raised and lowered according to the change in the water level in the electric power source, so that the underground transmission line can be raised and lowered together with the support member 420.

The immersion prevention unit 400 includes a support spring 470 for supporting the float 440 and the underground transmission line from the bottom of the power source while being coupled to the outside of the guide bar 410 to be positioned below the float 440, As shown in FIG.

The support spring 470 is maintained in a contracted state due to the load of the underground transmission line. The support spring 470 relaxes as the float 440 ascends and descends with the rise of the water level in the power line, have.

On the other hand, the support spring 470 is retracted by the load of the underground transmission line as the float 440 is lowered along with the lowering of the water level in the electric power source, ), It is possible to stably support the underground transmission line.

A protection plate 480 may be provided between the float 440 and the support spring 470 to prevent the float 440 from being damaged by the pressing of the support spring 470.

Thus, the flooding prevention part 400 can prevent the underground transmission line from being flooded by allowing the underground transmission line to move up and down according to the change in the water level in the power line.

As described above, the present invention is not limited to the above-described embodiments, and it is to be understood that the present invention is not limited to the above-described embodiment, It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

100: sensor unit 120:
200: data collecting unit 210: data collecting unit
220: data transferring unit 230: central processing unit
240: power supply unit 300: upper server
400: immersion prevention part 410: guide bar
411: engaging projection 420: supporting member
430: connecting means 431: guide member
432: sidebar 433: connecting bar
434: Coupling bar 435: Coupling member
440: float 450: coupling tube
460: Fixing means 461: Fixing plate
462: casing 463: spring
464: Release preventing member 470: Supporting spring
480: Shield plate

Claims (1)

A sensor unit 100 for detecting the state of the underground transmission line;
A data collection device 200 for collecting sensing information of the underground transmission line sensed by the sensor unit 100;
An upper server (300) for receiving the sensing information from the data collection device (200) and monitoring the status of the underground transmission line based on the sensing information; And
And a control unit (120) for generating at least one operation state information of at least one of a ventilation facility, which is a power facility in the power field, and an operation state of the lighting,
Further comprising a flooding prevention part (400) for raising and lowering the underground transmission line according to a change in the water level in the power field,
The water immersion prevention part (400)
A guide bar 410 disposed on one side of the underground transmission line and extending upward from a bottom surface of the power hole;
A support member (420) for supporting the underground transmission line;
Connecting means (430) for connecting the support member (420) to the guide bar (410) so as to be able to move up and down;
The support member 420 is coupled to the guide bar 410 so as to be positioned below the support member 420 so as to be raised and lowered according to a change in the water level in the power hole, A float 440 for causing the flow path to rise and fall;
Fixing means (460) for fixing the upper portion of the guide bar (410) to the upper surface in the power hole;
A support spring 470 coupled to the outer side of the guide bar 410 to be positioned below the float 440 and supporting the float 440 and the underground transmission line from the bottom of the power hole; And
And a protection plate 480 provided between the float 440 and the support spring 470 to prevent the float 440 from being damaged by the pressing of the support spring 470,
The connecting means (430)
A pair of side bars 432 disposed at both sides of the guide bar 410 and a connecting bar 433 connecting the front ends of the pair of side bars 432, A guide member 431;
A binding bar 434 extending rearward from a rear end of the pair of side bars 432; And
And a binding member (435) for binding the support member (420) to the binding bar (434)
The fixing means (460)
A fixing plate 461 contacting the upper surface of the power electrode;
A guide hole 462a extending downward from the fixing plate 461 and connected to the upper portion of the guide bar 410 so that the lower portion of the guide bar 410 can be raised and lowered, A casing 462 formed therein;
A spring 463 received inside the casing 462 to be positioned above the guide bar 410; And
And a separation preventing member (464) for preventing the separation of the casing (462) from the guide bar (410)
The guide bar (410)
A coupling protrusion 411 protruding outward from both sides and protruding outward of the casing 462 through the guide hole 462a is formed,
The release preventing member 464,
While being engaged with the outside of the casing 462 so as to be positioned below the engaging projection 411 to prevent the casing 462 from separating from the guide bar 410, The length of the casing 462 projecting from the guide bar 410 is adjusted while being raised and lowered in the longitudinal direction,
The support spring (470)
The float 440 is maintained in a contracted state due to the load of the underground transmission line and is lifted up and down along with the rise and fall of the float 440 along with the rise of the water level in the electric circuit, Diagnosis system of super high voltage underground transmission line.

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