RU185311U1 - Device for operational monitoring of the technical condition of high-voltage power lines - Google Patents

Abstract

The utility model relates to the field of electrical engineering and can be used to fix high-frequency (HF) electromagnetic pulses (EMP) from switching, lightning, corona and partial discharges, breaks and short circuits (SC), to detect open or short circuit wires of high-voltage overhead power transmission lines ( VL), including single-phase earth faults, determining overhead overhead spans with icing and snow sticking to them, obtaining information about the amplitudes of rocking wires, determining overhead overflights with defects, with the following their localization, and reducing labor costs during installation and dismantling of devices. The essence of the claimed technical solution lies in the fact that the device for operational monitoring of the technical condition of high-voltage overhead lines installed on the phase wire of the overhead line between two supports and containing a first acceleration sensor, a first temperature sensor and a humidity sensor , the second acceleration sensor, current sensor, GLONASS / GPS navigation module) associated with the microprocessor inputs, in which information is generated on the basis of signals from the sensors information indicating the address of the overhead line passage about the open circuit or short circuit of the overhead line wires to the ground, about icing and snow sticking to them, about the amplitudes of the rocking wires, about overhead lines with defects, while the microprocessor output is connected to a transceiver designed to communicate with the control panel, and the power supply of the sensors, navigation module, microprocessor and transceiver installed on the electronic circuit of the device is carried out from the power supply unit, made in the form of a magnetic circuit mounted on a high-voltage wire of the overhead line, serving the primary winding of the transformer, which is equipped with a secondary winding of the transformer, which supplies power to the electronic circuit of the device, and the power storage unit is also connected to the power supply unit, according to the present utility model, further comprises a second temperature sensor, an RF EMR recording module connected to the microprocessor and the power supply unit . The technical result in the implementation of the claimed solution is the expansion of functionality through the implementation of the possibility of registering RF EMP. 1 ill.

Description

The utility model relates to the field of electrical engineering and can be used to fix high-frequency (HF) electromagnetic pulses (EMP) from switching, lightning, corona and partial discharges, breaks and short circuits (SC), to detect open or short circuit wires of high-voltage overhead power transmission lines ( VL) to the ground, including single-phase earth faults (OZZ), identifying overhead spans with icing and snow sticking to them, determining the type of icy-frosty deposits, as well as the point of desublimation and receiving info mation on the amplitudes of wobble wires determination spans overhead with defects, with subsequent localization and reducing labor costs for assembly and disassembly of devices.

The prototype is a device for operational monitoring of the technical condition of high-voltage overhead lines, which allows to obtain information about the breakage or short circuit of wires of power lines to the ground, to determine overhead lines with icing and snow sticking to them, with their subsequent localization, and reduce labor costs during installation and dismantling of devices (Patent RU No. 166411, IPC G01R 29/00).

A known device for operational monitoring of the technical condition of high-voltage overhead lines contains a first acceleration sensor, a temperature sensor and a humidity sensor, a second acceleration sensor, a current sensor, a navigation module (GLONASS / GPS) connected to the microprocessor inputs, installed on the phase conductor of the overhead lines between the two supports, on which based on the signals from the above-mentioned sensors, information is generated on the state of the overhead line with the address of the overhead span of the overhead line, while the output of the microprocessor is connected to a transceiver designed to communicate with the controller a remote control, and the sensors, the navigation module, the microprocessor and the transceiver installed on the device’s electronic circuit are supplied with power from a power supply unit made in the form of a magnetic circuit mounted on a high-voltage overhead wire that serves as the primary winding of the transformer, which is equipped with a secondary winding of the transformer that supplies power to an electronic circuit of the device, and an electric energy storage device connected to the power supply unit.

The main disadvantages of the prototype are the inability to fix RF EMR from switching, lightning, corona and partial discharges, as well as the use of a power supply, the removed power from which depends on the magnitude of the current in the drive. This is due to the fact that the device is not able to detect RF EMP, and the power supply performs power take-off only with the magnetic component of the electromagnetic field.

The objective of the utility model is to develop an operational device. monitoring the technical condition of high-voltage overhead lines, which eliminated the disadvantages of the prototype.

The technical result is the expansion of functionality due to the implementation of the possibility of registering RF EMP, as well as the implementation of the possibility of selecting i power by a power supply with an electrostatic component of the electromagnetic field.

The technical result is achieved by the fact that the device for operational monitoring of the technical condition of high-voltage overhead lines installed on the phase conductor of the overhead line between two supports and containing a first acceleration sensor, a first temperature sensor and a humidity sensor, a second acceleration sensor, a current sensor, a navigation module (GLONASS / GPS), associated with the inputs of the microprocessor, in which, based on the signals from the above-mentioned sensors, information is generated indicating the flight address of the overhead line about a breakage or short circuit, including OZZ, overhead lines to the ground, iced and snow sticking to them, about the amplitudes of the swaying wires, about overhead overhead spans with defects, while the microprocessor output is connected to a transceiver designed to communicate with the dispatch console, and the sensors, navigation module, microprocessor and transceiver installed on the device’s electronic circuitry are powered from a power supply unit, made in the form of a magnetic circuit mounted on a high-voltage overhead wire serving as the primary winding of a transformer, which is equipped with a secondary winding of the transformer a power supply device to the electronic circuit of the device, and the power storage device is also connected to the power supply unit, according to the present utility model, further comprises a second temperature sensor, an RF EMR recording module connected to the microprocessor and the power supply unit.

In this case, the power supply unit is configured to take power with the electrostatic component of the electromagnetic field.

The RF EMR registration module is a magnetic antenna with a ferrite core with the ability to register the front and frequency of the RF EMR, as well as their transit time.

The essence of the utility model is illustrated by the drawing, where in FIG. 1 shows its structural block diagram.

In the drawing, the numbers indicate:

1 - the first acceleration sensor (two-axis accelerometer);

2 - the first temperature sensor;

3 - humidity sensor;

4 - second acceleration sensor (three-axis accelerometer);

5 - current sensor;

6 - navigation module (GLONASS / GPS);

7 - microprocessor;

8 - transceiver;

9 - electronic circuit of the device;

10 - power supply;

11 - electric energy storage device (for example, a rechargeable battery);

12 - module registration RF EMP;

13 - the second temperature sensor.

A device for operational monitoring of the technical condition of high-voltage overhead lines installed on a phase conductor of overhead lines between two supports and containing a first acceleration sensor 1, a first temperature sensor 2 and a humidity sensor 3, a second acceleration sensor 4, a current sensor 5, a navigation module (GLONASS / GPS) 6, associated with the inputs of the microprocessor 7, in which information is generated based on the signals from the above-mentioned sensors indicating the address of the overhead line passage about a breakage or short circuit, including OZZ, overhead line wires to the ground, about icing and snow sticking to them, about the amplitude rocking wires there, about overhead overhead spans with defects, while the microprocessor 7 output is connected to a transceiver 8, intended for communication with a control console, and power supply to sensors 1, 2, 3, 4, 5, navigation module 6, microprocessor 7 and transceiver 8, installed on the electronic circuit 9 of the device, is carried out from the power supply unit 10, made in the form of a magnetic circuit mounted on a high-voltage wire of the overhead line serving as the primary winding of the transformer, which is equipped with a secondary winding of the transformer, supplying pi Maintenance on the electronic circuit device 9, and a power supply unit 10 is also connected to accumulator 11 and electric power.

The difference between the proposed device for operational monitoring of the technical condition of high-voltage overhead lines is that it additionally contains a registration module for RF EMI 12, a second temperature sensor 13 connected to the microprocessor 7 and the power supply 10.

The registration module of the RF EMR 12 is a magnetic antenna with a ferrite core with the ability to register the front and frequency of the RF EMR, as well as the time of their passage.

All components of the device for operational monitoring of the technical condition of high-voltage overhead lines are in constructive unity, i.e. the connection is made by soldering.

A device for operational monitoring of the technical condition of high-voltage overhead lines works as follows.

Using the navigation module (GLONASS / GPS) 6, the exact time signals are determined, as well as the position of the overhead line span and its coordinates in arbitrary units or in the format of the GLONASS or GPS system. In addition, the navigation module (GLONASS / GPS) 6 reduces labor costs when installing new devices and replacing old devices.

To quickly determine the place of icing, breakage or short circuit of high-voltage overhead lines, including OZZ on one of the phase wires, through the overhead line passage between the supports, devices for operational monitoring of the technical condition of high-voltage overhead lines are fixed. To measure the temperature and determine the onset of snow sticking or icing on the wires, use the first temperature sensor 2, the second temperature sensor 13 and humidity sensor 3. Information about the onset of ice formation on the wires is also processed by the control microprocessor 7 and then transmitted to the control room.

For a more accurate determination of the phase wire slack and for reliability, two types of acceleration sensors can be used in the device: a three-axis accelerometer 4 determines the gravity acceleration vector g in space; the biaxial accelerometer 1 determines the projection of the vector g onto the plane of the wire (the plane is formed by the axis of the accelerometer 1 directed along the wire and the axis perpendicular to the normal to the ground). The output signals from acceleration sensors 1 and 4 (accelerometers) are fed to the corresponding inputs of the control microprocessor 7, where the information is processed and received in the transceiver 8, and then transmitted over the radio channel from block to block to the dispatch console. The use of a three-axis accelerometer 4 allows you to determine the angle by which the operational monitoring device rotated, mounted on the wire, relative to the horizon, and therefore, correct the readings from the two-axis accelerometer 1, increasing the accuracy of determining both the wire sag and its oscillations to the sides.

The output signals from acceleration sensors (accelerometers) 1 and 4, proportional to the swing amplitude of the phase wire, are fed to the corresponding inputs of microprocessor 7. In microprocessor 7, the signals are compared with the values stored in advance in the program in accordance with a predetermined algorithm. For example, if a mechanical action on a phase wire causes the oscillation of the wires along the X axis to some N cm, then the microprocessor 7 issues a command about normal amplitudes to the control panel. If these amplitudes are greater than the specified value N + n cm, then a command is issued about the overestimated amplitudes indicating the location of the overhead span in GLONASS / GPS coordinates. If a phase wire breaks, its sag along the Y axis, then according to the same principle, the microprocessor 7 transmits information about the event to the control panel. For example, if the ambient temperature is within 0 ° С and the humidity sensor 3 detects the presence of precipitation (rain, snow, fog), and at the same time takes place. sagging of the wire, this indicates a possible sticking of snow on the wires or their icing, which is transmitted to the control panel.

When a wire breaks, a sharp change in the angle of inclination of the wire is recorded and information is also transmitted to the control room, regardless of the ambient temperature and the presence of precipitation.

The installed current sensor 5 makes it possible to determine not only a wire break, but also a short circuit, including OZZ, despite the fact that these emergencies can occur on the phase wires of the diagnosed overhead line, not equipped with this device, due to the registration of changes in the current strength in the working phase wire , as well as tracking the front of the current strength by oscillographing the input signals with reference to the exact time signals from the navigation module (GLONASS / GPS) 6.

The device has the ability to monitor at least two spans. VL due to the transceiver 8, with a working range of at least 600 meters in the open.

If one of the devices for monitoring the technical condition of the overhead line fails, the transmission of information to the control room will continue from other devices through the remaining working transceivers 8 according to the Zigbee protocol.

The registration module of the RF EMR 12 is a magnetic antenna with a ferrite core, with the possibility of registering the front and frequency of the RF EMR, as well as the time of their passage. This allows you to fix the RF EMR from switching, lightning, corona and partial discharges, open circuit or short circuit, including OZZ, overhead line wires and track their distribution over the overhead line, as well as localize overhead overflights with defects.

A device for operational monitoring of the technical condition of high-voltage overhead lines may differ in that the power supply unit is configured to take power with the electrostatic component of the electromagnetic field to operate on lines of 110 kV and above. Due to this, the power of the device for operational monitoring of the technical condition of high-voltage overhead lines can be supplied from a wire with a large current strength and does not depend on a change in the current strength in the wire, since only the overhead voltage mainly affects the magnitude of the selected power.

The power supply of the electronic circuitry 9 of the device is supplied from the power supply unit 10 and is fed through it to the microprocessor 7, transceiver 8, navigation module 6, sensors (first acceleration sensor 1, first temperature sensor 2, second temperature sensor 13, humidity sensor 3, second acceleration sensor 4 and a current sensor 5) and a registration module for RF EMR 12. Thanks to the power supply unit 10, energy is taken from the electromagnetic field around the phase wire. Further, this electricity is used to power the electronic circuitry 9 of the device and recharge the energy storage device 11. The energy stored in the drive 11 can then be used to power the electronic circuitry 9 of the device in case of power outages, providing information for some time using the accumulated charge energy.

Thus, the proposed utility model has wider possibilities for power supply from electromagnetic fields of overhead lines, and also has the ability to register RF EMP and allows you to control and transmit information to the dispatch console according to the following parameters. and possible events:

- operational determination of the location of a cliff or short circuit, including OZZ, high-voltage overhead lines in each span and on each phase of wires A, B and C;

- determination of the swinging of the wires when exposed to wind;

- determination of overhead overhead spans with snow sticking to them and icing control with the possibility of determining the type of icy-hoarfrost deposits;

- determination of the place of mechanical impact on the wires;

- control of ambient temperature;

- temperature control of OHL wires caused by changes in current loads in the system, as well as heating of wires caused by currents in the fight against icing and snow sticking to them;

- determination of the point of sublimation;

- determination of the location of the short circuit of wires;

- determination of other values of mechanical stresses on overhead lines caused by natural phenomena;

- fixation of RF EMR from switching, lightning, corona and partial discharges, open circuit or short circuit, including OZZ of overhead lines;

- localization of overhead overhead spans with defects.

Claims (2)

1. A device for operational monitoring of the technical condition of high-voltage overhead power lines (OHL) installed on the phase conductor of the OHL between two supports and containing a first acceleration sensor, a first temperature sensor and a humidity sensor, a second acceleration sensor, a current sensor, a navigation module (GLONASS / GPS) related to the microprocessor inputs, in which, based on the signals from the above sensors, information is generated indicating the address of the overhead line span about a break or short circuit, including single-phase earth faults, overhead lines ground, about icing and snow sticking on them, about the amplitudes of the swaying wires, about overhead spans with defects, while the microprocessor output is connected to a transceiver designed to communicate with a dispatch console, and the power supply of these sensors, a navigation module, a microprocessor and a transceiver installed on the electronic circuit of the device is carried out by a power supply unit that carries out energy selection with the magnetic component of the electromagnetic field of the phase wire, and the accumulator is also connected to the power supply unit an electric power generator, characterized in that it further comprises a second temperature sensor, a module for registering high-frequency electromagnetic pulses connected to the microprocessor and the power supply. 2. The device according to claim 1, characterized in that the power supply unit is configured to take power with an electrostatic component of the electromagnetic field.

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