RU112534U1 - REMOTE CONTROL FOR WIRING AND SECURITY AREA OF THE ELECTRIC TRANSMISSION AIR LINE AND ELECTRIC TRANSMISSION AIR LINE SUPPLIED WITH SUCH A DEVICE - Google Patents

Abstract

1. A device for remote monitoring of the state of a wire and a security zone of an overhead power line, comprising a housing equipped with means of fastening to a wire of a power transmission line, and a power supply unit located in the housing, a data processing unit and a wire condition monitoring unit connected to it, a security fire condition monitoring unit zones and a unit for wireless data transmission to the remote terminal of the power system dispatcher, while the unit for monitoring the fire state of the security zone is equipped with an atmosphere smoke sensor and a sensor for the content of combustion products in the atmosphere. ! 2. The device according to claim 1, characterized in that the unit for monitoring the state of the wire comprises current and temperature sensors of the wire and a receiver for signals from the satellite global positioning system. ! 3. The device according to claim 1, characterized in that the unit for wireless data transmission to the ground terminal is made in the form of an interface with a cellular telephony network according to the GSM or GPRS standard. ! 4. The device according to claim 1, characterized in that the block for monitoring the fire state of the security zone contains a temperature sensor of ground objects made on the basis of an infrared radiation analyzer. ! 5. The device according to claim 1, characterized in that a video camera connected to the data processing unit is placed in the device body. ! 6. An overhead power line containing spans in which a current-carrying wire is fixed on the supports by means of insulating suspensions, and a device according to any one of claims 1-5 is installed in at least one of the line spans on the current-carrying wire.

Description

Technical field

The invention relates to remote control (monitoring) of electric power facilities and is intended to obtain data on the state of the wires and the security zone of a high-voltage overhead power transmission line (OHL), preprocess the received data and transmit it to an information collection point (for example, a power system control room).

The monitoring results can be used to assess the condition of the wires and the protection zone of overhead lines, early detection of factors affecting the safety of the operation of the line and timely adoption of the necessary measures to ensure reliable and safe operation of the line.

State of the art

A device is known for remote monitoring of the state of the overhead line [RU 2222858, IPC H02J 13/00, 2002], which comprises a housing provided with a means of attachment to the wire of the power line, and a power unit and a measuring and transmitting module located in the housing, which allows receiving signals about the state of the wire, convert it to digital data and transmit it to the remote terminal via the cellular telephony channel.

The disadvantage of the device is the limited functionality of monitoring the factors affecting the safety and trouble-free operation of the overhead line - the device only controls the state of the overhead line wires (wire temperature and current in them).

As the practice of operation shows, accidents on overhead lines are associated not only with factors characterizing the condition of the wires, but also with processes taking place near the overhead lines - in its security zone. The overhead protection zone is a part of the surface of the land and airspace (to a height corresponding to the height of the supports of overhead power lines), limited by parallel vertical planes that are located on both sides of the power line from the extreme wires for certain distances depending on the voltage class of the overhead lines. [The rules for establishing protection zones of electric grid facilities and special conditions for the use of land located within the boundaries of such zones, approved by RF Government Resolution of February 24, 2009 N160]. For example, for a 750 kV OHL, the indicated distance is 40 m.

A device is known for remote monitoring of the condition of an overhead power line wire installed on an overhead line wire and containing a power supply unit, wire temperature and current sensors, a range finder arranged for orientation in the ground direction under the wire, wireless data transmission means to a remote ground terminal and a processing unit to which connected the specified rangefinder and means of wireless data transmission to the remote terminal [Patent RU 95913, H02G 7/16, 2010]. This device is selected as a prototype.

Measurements made by the prototype using a range finder allow you to control changes in the size of the wire to the ground caused by the extension of the wire or a change in the ground situation under the OHL wire (for example, the appearance of trees, shrubs, permanent or temporary structures in the span). Thus, the prototype allows you to control both the state of the OHL wire (using sensors of its temperature and current), and the state of the security zone under the OHL wire (using the range finder).

The disadvantage of the prototype is that it monitors and transmits to the remote central monitoring point (power system dispatcher) the results of monitoring only those factors in the OHL protection zone that affect the size of the wire to the ground. As the practice of operating overhead lines shows (especially during periods of drought), fires and fires in and around the overhead protection zone have a significant impact on the safety and trouble-free operation of overhead lines. Monitoring performed using the prototype does not allow timely detection of approaching fires and fires in the protection zone of overhead lines. As a result, the power system dispatcher is forced to judge the fire situation on the overhead line using data from other sources of information. (Such data are collected, for example, at points of centralized monitoring of geographically distributed fire alarm systems [Patent RU 2243593, IPC G08B 19/00, 2004]). At the same time, decisions on unloading or shutting down OHL and redistributing electricity flows for uninterrupted power supply to responsible consumers are made by the dispatcher on the basis of indirect data on the state of the OHL security zone - information about the fire situation in the adjacent territories and the approximate linking of these data to the OHL route. This reduces the operational reliability of the overhead line and the entire energy system as a whole.

The objective of the invention is to remedy this drawback.

SUMMARY OF THE INVENTION

The technical result of the invention is its use allows the power system dispatcher to directly control a set of factors affecting the reliability of power supply and the safety of overhead lines, including the condition of the wire and the fire condition of the overhead protection zone. Such control allows to increase the efficiency and effectiveness of the emergency and fire control measures taken by the dispatcher (including the removal of overhead lines from work with the transfer of responsible consumers to power according to the backup scheme).

The subject of the invention is a device for remote monitoring of the condition of the wire and the security zone of the overhead power line, comprising a housing equipped with fasteners on the wire of the power line and a power supply unit, a data processing unit and a wire state monitoring unit connected to it, a fire condition monitoring unit connected to it security zone and wireless data transmission unit to a remote terminal.

The development of the invention is that:

- the wire condition monitoring unit may comprise current and temperature sensors of the wire and a signal receiver of the satellite global positioning system;

- the wireless data transmission unit to the ground terminal is made in the form of a node for interfacing with a cellular telephony network according to the GSM or GPRS standard;

- the control unit for the fire condition of the security zone contains a smoke detector of the atmosphere, a sensor of the content of combustion products in the atmosphere, made on the basis of a gas analyzer, and a temperature sensor of ground objects, made on the basis of an infrared radiation analyzer;

- a video camera connected to a data processing unit is placed in the device’s case.

The subject of the invention is also an overhead power transmission line containing spans, in which a conductive wire is fixed to the supports by means of insulating suspensions, and at least one of the spans of the line has a device for remote monitoring of the condition of the wire and the security zone.

Brief Description of the Drawings

Figure 1 shows a General view of the device mounted on the wire of the overhead line; figure 2 is a functional block diagram of the device.

The implementation of the invention in view of its development

On the wire 1 of the overhead line mounted casing 2, equipped with fasteners 3 on the wire 1 (see figure 1).

Figure 2 shows the housed in the housing 2:

4 - power supply;

5 - data processing unit;

6 - wire condition monitoring unit;

7 - control unit of the fire condition of the security zone;

8 - block wireless data transmission to the ground terminal.

Blocks 6, 7 and 8 are connected to block 5.

Block 4 can be made in the form of a battery and is equipped with means of recharging from the current in the line wire and / or from the solar battery (not shown in Fig. 1).

Block 5 can be made in the form of a microprocessor controller with the ability to convert analog-to-digital conversion of input signals.

Block 6 includes a current sensor 9 in wire 1, a temperature sensor 10 for wire 1, a receiver 11 for signals from the satellite system for global positioning GPS and / or GLONASS with a determinant of its position in a three-dimensional coordinate system (GPS / GLONASS receiver). [RU2222858, IPC H02J 13/00, 2002].

Block 8 is made in the form of a node for interfacing with a cellular telephony network according to the GSM standard with the ability to send SMS messages and data in GPRS mode.

Block 7 contains a sensor 12 for the level of smoke of the atmosphere, a sensor 13 for the content of combustion products in the atmosphere, made on the basis of a gas analyzer, and a temperature sensor 14 of ground objects, made on the basis of an infrared radiation analyzer. The outputs of the sensors 12, 13, 14 are connected to block 5. The sensors of block 7 can be made on the basis of well-known technical solutions, for example, [RU 2379760, G08B 17/10, 2010. Optical smoke sensor], [RU 2091781 G01N 27/00 , 1997. Gas analyzer], [RU 2109345 G08B 17/12 1998. Pyrometric fire alarm sensor] or based on commercially available devices of the corresponding purpose, commercially available.

In the housing 2 can be additionally placed and connected to the block 5 of the video camera 15.

Figure 1 shows the holes 16 in the housing 2, providing air intake for the sensors 12, 13 and the necessary overview for the sensor 14 and the video camera 15, as well as the sensor 10, built-in means 3 for mounting the housing 2, the antenna 17 for wireless communication and antenna 18 receiver 11.

The sensor 9 functions as a current transformer and can be structurally made, for example, by the type of current clamp.

The sensor 10 can be made on the basis of one or two thermocouples embedded (see figure 2) in the means 3 of the fastening of the housing 2 on the wire 1.

Antennas 17 and 18 are connected to block 8 and receiver 11, respectively, and ensure their operation.

The device operates as follows.

The housing 2 of the device is installed on a wire in one of the overhead spans.

The sensors 9 and 10, which are part of block 6, provide information, respectively, on the current and temperature of the line wire, and receiver 11, on the spatial coordinates of the device. Using this information allows you to assess the condition of the wire, including its size (distance to the ground or ground objects), decreasing as a result of heating and sagging wires, and to prevent an accident by taking timely measures to unload the overhead line.

Data on the fire condition of the VL security zone entering block 5 from block 7 may include:

- information about the level of smoke in the atmosphere in the protection zone of overhead lines received from the sensor 12;

- information received from the sensor 13, on the content in the airspace of the OHL protection zone of such combustion products as CO and CO ₂ , as well as on the O ₃ content;

- information about the temperature of ground objects in the protection zone of overhead lines received from the sensor 14;

- video information about the situation in the security zone of overhead lines received from a portable video camera 15.

Block 5 converts the analog signals coming from blocks 6 and 7 into digital data, which it accumulates, preprocesses, stores and transmits using block 8 to the ground terminal. Block 5 can also be programmed to receive commands and requests received from the ground terminal through block 8, including, for example, camera control commands and requests for monitoring results.

Using the proposed device allows you to receive, collect and provide in real time to the dispatcher of the energy system comprehensive information for the technological and fire control of overhead lines and its security zone and, thus, makes it possible to increase the efficiency of measures to prevent accidents.

Claims (6)

1. A device for remote monitoring of the condition of the wire and the security zone of the overhead power line, comprising a housing equipped with fasteners on the wire of the power line, and a power supply unit, a data processing unit and a wire state monitoring unit connected to it, a fire state security monitoring unit connected to it zones and wireless data transmission unit to the remote terminal of the power system dispatcher, while the fire state monitoring unit of the security zone is equipped with a smoke detector and Occupancy content of the combustion products into the atmosphere. 2. The device according to claim 1, characterized in that the wire condition monitoring unit comprises current and temperature sensors of the wire and a signal receiver of the satellite global positioning system. 3. The device according to claim 1, characterized in that the wireless data transmission unit to the ground terminal is made in the form of a node for interfacing with a cellular telephone network according to the GSM or GPRS standard. 4. The device according to claim 1, characterized in that the fire state monitoring unit of the security zone comprises a temperature sensor for ground objects based on an infrared radiation analyzer. 5. The device according to claim 1, characterized in that in the housing of the device there is a video camera connected to a data processing unit. 6. An overhead power transmission line containing spans, in which a conductive wire is fixed to the supports by means of insulating suspensions, while at least one of the spans of the line on the current-carrying wire is equipped with a device according to any one of claims 1 to 5.