RU2459340C2 - Method and device for transmission of power - Google Patents

Method and device for transmission of power Download PDF

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Publication number
RU2459340C2
RU2459340C2 RU2010138698/07A RU2010138698A RU2459340C2 RU 2459340 C2 RU2459340 C2 RU 2459340C2 RU 2010138698/07 A RU2010138698/07 A RU 2010138698/07A RU 2010138698 A RU2010138698 A RU 2010138698A RU 2459340 C2 RU2459340 C2 RU 2459340C2
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RU
Russia
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line
radial
single
wire
overhead
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RU2010138698/07A
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Russian (ru)
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RU2010138698A (en
Inventor
Дмитрий Семенович Стребков (RU)
Дмитрий Семенович Стребков
Олег Алексеевич Рощин (RU)
Олег Алексеевич Рощин
Андрей Юрьевич Богданов (RU)
Андрей Юрьевич Богданов
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Российская академия сельскохозяйственных наук Государственное научное учреждение Всероссийский научно-исследовательский институт электрификации сельского хозяйства Российской академии сельскохозяйственных наук (ГНУ ВИЭСХ Россельхозакадемии)
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Priority to RU2010138698/07A priority Critical patent/RU2459340C2/en
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Abstract

FIELD: electricity.
SUBSTANCE: in a method to transmit power along an overhead radial power transmission line from a step-down substation to loads distributed along a radial line at the frequency of 50-60 Hz the power is sent additionally to an end load of the radial line from the step-down substation via a rectifier, a frequency converter and a resonant circuit along a single-wire line at a resonant frequency of 0.4-100 kHz to a resonant circuit, a rectifier and a network inverter, the network inverter 50-60 Hz is attached at the end load to the radial overhead line, and then power is sent from the end load along an overhead radial line to other distributed loads connected to the radial line. Power to the end load of the radial line is sent along a single-wire cable line or a single-wire line by its placement on supports of the overhead radial line. The device to transfer power comprises at the substation a rectifier, a frequency converter and a resonant circuit, the medium outlet of which is connected to a single-wire line, the single-wire line is connected at the end load with the end of the radial line via a resonant circuit, a rectifier and a network inverter.
EFFECT: higher reliability of power supply, reduced losses in a power transmission line and increased power transmitted in lines.
6 cl, 3 dwg

Description

The invention relates to the field of electrical engineering, in particular to a method and apparatus for transmitting electrical energy.

A known method and device for transmitting electricity in a closed circuit consisting of two or more wires, transformer substations and power lines (AC and DC power transmission. Electrical reference book. Energoatomizdat. 1988. S.337-352).

The disadvantage of this method and device is the loss in the lines, comprising from 5 to 20% depending on the length of the power lines, and the high cost of equipment per 1 km of power line.

A known method and device for transmitting electrical energy by creating high-frequency resonant oscillations in a circuit consisting of a high-frequency generator and two step-up and step-down high-frequency Tesla transformers, transmission of high-voltage potential and electric energy via a single-wire line to a Tesla step-down transformer, rectification of current and transmission of electric energy to the load , resonant vibrations of electromagnetic energy of wavelength λ = 2L AB / n, where n - an integer, L AB - length se isolated from whether an electric single-wire line is transferred from a Tesla step-up high-frequency transformer of the low-voltage winding of a Tesla step-up transformer to a resonant circuit of a low-voltage winding of a Tesla step-down transformer through a single-wire electrical circuit isolated from earth, the reactive current in a ground-isolated electric single-wire line is converted to a high-voltage alternating current frequency containing the vector sum of the active and reactive currents, which then azuyut into direct current that is converted into alternating current of industrial frequency (Pat. RF №2555406. Bull. No. 18, June 27, 2004)

The indicated method and device have small losses in a single-wire line and the ability to transmit electrical energy over a long distance.

The disadvantage of this method and device is the inability to use the existing three-phase power lines for the transmission of electrical energy in resonance mode at an increased frequency.

The objective of the invention is to increase the reliability of power supply, reduce losses in the transmission line and increase the transmitted power in the lines.

As a result of using the present invention, reliability is improved and losses in the transmission of electrical energy are reduced.

This result is achieved by the fact that in the method of transmitting electric energy through an overhead radial power line from a step-down substation to consumers distributed along a radial line at a frequency of 50-60 Hz, electric energy is additionally transmitted to the end-user of the radial line from the step-down substation through a rectifier, a frequency converter and resonant a circuit along a single-wire line at a resonant frequency of 0.4-100 kHz to a resonant circuit, a rectifier and a network inverter, connect the network the inverter is 50-60 Hz from the end consumer to the radial overhead line and then electric energy is transferred from the end consumer along the radial overhead line to other distributed consumers connected to the radial line.

In an embodiment of the method for transmitting electrical energy, electrical energy is transmitted to the end user of the radial line via a single-wire cable line.

In another embodiment of the method of transmitting electrical energy, electrical energy is transmitted to the end user of the radial line through a single-wire line by placing it on the supports of the overhead radial line.

In a device for transmitting electric energy through an overhead radial power line from a step-down substation to consumers distributed along a radial line at a frequency of 50-60 Hz, the device comprises a rectifier, a frequency converter and a resonant circuit, the middle terminal of which is connected to a single-wire line, a single-wire line is connected to end consumer with the end of the radial line through a resonant circuit, a rectifier and a network inverter.

In an embodiment of a device for transmitting electrical energy, a single-wire line is made in the form of an underground cable line.

In another embodiment of a device for transmitting electrical energy, a single-wire line is mounted on the supports of a radial overhead line.

The method and apparatus for transmitting electrical energy are illustrated by drawings, in which Fig. 1 shows a block diagram of a method and apparatus for transmitting electrical energy through a three-phase overhead line and a single-wire overhead line, and in Fig. 2, a support overhead power line with traverses for a three-phase and single-wire line, figure 3 is a block diagram of a method and device for transmitting electrical energy through a three-phase overhead line and an underground cable line.

The flowchart of a method and apparatus for transmitting electrical energy comprises a step-down substation 1, a three-phase radial overhead power line 2, to which consumers 3, 4, 5 and an end-user 6 are distributed along line 2. Step-down substation 1 is connected by a three-phase line 7 to a rectifier 8 , a frequency converter 9 and a resonant circuit 10, consisting of a capacitance 11 and an inductance 12. A rectifier 8, a frequency converter 9 and a resonant circuit 10 are installed in a separate room 13 inside the substation 1 or a row m with her. The middle terminal 14 of the resonant circuit 10 is connected to a single-wire overhead line 15, which is installed on a separate traverse 16 of each support 17 of the three-phase overhead line 2 (figure 2). The end consumer 6 in a separate room 18 has a resonant circuit 19 with a capacity of 20 and an inductance 21. The average terminal 22 of the resonant circuit 19 is connected to a single-wire line 15. The conclusions 23 and 24 of the resonant circuit 19 are connected through a rectifier 25 and a network inverter 26 to a three-phase power line 2 at the end user 6.

Figure 2 shows the support 17 of an aerial three-phase power line 2, on which a three-phase aerial power line 2 is mounted on a crossarm 27, which is made in the form of a self-supporting insulated wire 28 containing three insulated conductors 29, 30, 31 and an insulated neutral wire 32. On the crossarm 16 supports 17 fixed single-wire insulated line 15.

In Fig.3, a single-wire line 2 is made in the form of an underground cable insulated line 33, laid in the cable channel 34.

An example of the method and device for transmitting electrical energy.

The step-down substation 1 10 / 0.4 kV 100 kW converts the voltage from 10 kV to 0.4 kV, which is supplied to consumers 3, 4, 5, 6, installed along the three-phase line 2 through the three-phase line 2, the length of the line 2 is 5 km . With a full load of line 2 due to losses in the wires, the voltage at the end user 6 decreases and becomes less than the nominal values, which leads to premature failure of electrical devices from consumers. The supply of electrical energy through a single-wire line 15 to the end consumer 6 through a network inverter 26 turns the radial three-phase line 2 into a ring line. In this case, the three-phase line 2 is supplied with power from two sides: step-down substation 1 and from the final consumer 6. The frequency of the resonant circuits 10 and 19 is 10 kHz, the voltage in the single-wire line is 10 kV, and the transmitted power is 50 kW. As a result, the reliability of power supply is increased, losses in line 2 are reduced, and the transmitted power and throughput of the power line are increased.

Claims (6)

1. A method of transmitting electric energy through an overhead radial power line from a step-down substation to consumers distributed along a radial line at a frequency of 50-60 Hz, characterized in that the electric energy is transferred additionally to the end user of the radial line from the step-down substation through a rectifier, a frequency converter and a resonant a circuit along a single-wire line at a resonant frequency of 0.4-100 kHz to a resonant circuit, a rectifier and a network inverter, connect a network inverter of 50-60 Hz at end user to the radial overhead line and then transmit electrical energy from the end user along the overhead radial line to other distributed consumers connected to the radial line.
2. The method of transmitting electric energy according to claim 1, characterized in that the electric energy to the end user of the radial line is transmitted via a single-wire cable line.
3. The method of transmitting electric energy according to claim 1, characterized in that the electric energy to the end user of the radial line is transmitted via a single-wire line by placing it on the supports of the overhead radial line.
4. Device for transmitting electric energy through an overhead radial power line from a step-down substation to consumers distributed along a radial line at a frequency of 50-60 Hz, characterized in that the device comprises a rectifier, a frequency converter and a resonant circuit, the middle terminal of which is connected to a single-wire lines, a single-wire line is connected at the end consumer with the end of the radial line through a resonant circuit, a rectifier and a network inverter.
5. A device for transmitting electrical energy according to claim 4, characterized in that the single-wire line is made in the form of an underground cable line.
6. A device for transmitting electrical energy according to claim 4, characterized in that the single-wire line is mounted on the supports of the radial overhead line.
RU2010138698/07A 2010-09-21 2010-09-21 Method and device for transmission of power RU2459340C2 (en)

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Cited By (48)

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RU2577522C2 (en) * 2014-05-19 2016-03-20 Федеральное государственное бюджетное научное учреждение "Всероссийский научно-исследовательский институт электрификации сельского хозяйства" (ФГБНУ ВИЭСХ) Method and device for transmission of electric power
US9496921B1 (en) 2015-09-09 2016-11-15 Cpg Technologies Hybrid guided surface wave communication
US9857402B2 (en) 2015-09-08 2018-01-02 CPG Technologies, L.L.C. Measuring and reporting power received from guided surface waves
US9859707B2 (en) 2014-09-11 2018-01-02 Cpg Technologies, Llc Simultaneous multifrequency receive circuits
US9882436B2 (en) 2015-09-09 2018-01-30 Cpg Technologies, Llc Return coupled wireless power transmission
US9882397B2 (en) 2014-09-11 2018-01-30 Cpg Technologies, Llc Guided surface wave transmission of multiple frequencies in a lossy media
US9885742B2 (en) 2015-09-09 2018-02-06 Cpg Technologies, Llc Detecting unauthorized consumption of electrical energy
US9887558B2 (en) 2015-09-09 2018-02-06 Cpg Technologies, Llc Wired and wireless power distribution coexistence
US9887587B2 (en) 2014-09-11 2018-02-06 Cpg Technologies, Llc Variable frequency receivers for guided surface wave transmissions
US9887585B2 (en) 2015-09-08 2018-02-06 Cpg Technologies, Llc Changing guided surface wave transmissions to follow load conditions
US9887556B2 (en) 2014-09-11 2018-02-06 Cpg Technologies, Llc Chemically enhanced isolated capacitance
US9887557B2 (en) 2014-09-11 2018-02-06 Cpg Technologies, Llc Hierarchical power distribution
US9893403B2 (en) 2015-09-11 2018-02-13 Cpg Technologies, Llc Enhanced guided surface waveguide probe
US9893402B2 (en) 2014-09-11 2018-02-13 Cpg Technologies, Llc Superposition of guided surface waves on lossy media
US9899718B2 (en) 2015-09-11 2018-02-20 Cpg Technologies, Llc Global electrical power multiplication
US9941566B2 (en) 2014-09-10 2018-04-10 Cpg Technologies, Llc Excitation and use of guided surface wave modes on lossy media
US9960470B2 (en) 2014-09-11 2018-05-01 Cpg Technologies, Llc Site preparation for guided surface wave transmission in a lossy media
US9973037B1 (en) 2015-09-09 2018-05-15 Cpg Technologies, Llc Object identification system and method
US9997040B2 (en) 2015-09-08 2018-06-12 Cpg Technologies, Llc Global emergency and disaster transmission
US10001553B2 (en) 2014-09-11 2018-06-19 Cpg Technologies, Llc Geolocation with guided surface waves
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US10033198B2 (en) 2014-09-11 2018-07-24 Cpg Technologies, Llc Frequency division multiplexing for wireless power providers
US10033197B2 (en) 2015-09-09 2018-07-24 Cpg Technologies, Llc Object identification system and method
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US10062944B2 (en) 2015-09-09 2018-08-28 CPG Technologies, Inc. Guided surface waveguide probes
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US10079573B2 (en) 2014-09-11 2018-09-18 Cpg Technologies, Llc Embedding data on a power signal
US10084223B2 (en) 2014-09-11 2018-09-25 Cpg Technologies, Llc Modulated guided surface waves
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US10141622B2 (en) 2015-09-10 2018-11-27 Cpg Technologies, Llc Mobile guided surface waveguide probes and receivers
US10175203B2 (en) 2014-09-11 2019-01-08 Cpg Technologies, Llc Subsurface sensing using guided surface wave modes on lossy media
US10175048B2 (en) 2015-09-10 2019-01-08 Cpg Technologies, Llc Geolocation using guided surface waves
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US10193229B2 (en) 2015-09-10 2019-01-29 Cpg Technologies, Llc Magnetic coils having cores with high magnetic permeability
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