RU2505897C1 - Method for controlled melting of ice on overhead power lines with alternating current - Google Patents

Method for controlled melting of ice on overhead power lines with alternating current Download PDF

Info

Publication number
RU2505897C1
RU2505897C1 RU2012122516/07A RU2012122516A RU2505897C1 RU 2505897 C1 RU2505897 C1 RU 2505897C1 RU 2012122516/07 A RU2012122516/07 A RU 2012122516/07A RU 2012122516 A RU2012122516 A RU 2012122516A RU 2505897 C1 RU2505897 C1 RU 2505897C1
Authority
RU
Russia
Prior art keywords
melting
ice
overhead power
inverter
controlled
Prior art date
Application number
RU2012122516/07A
Other languages
Russian (ru)
Other versions
RU2012122516A (en
Inventor
Юрий Павлович Сташинов
Юрий Степанович Корнев
Владислав Викторович Конопелько
Original Assignee
Открытое Акционерное Общество "Федеральная Сетевая Компания Единой Энергетической Системы" (Оао "Фск Еэс")
Закрытое акционерное общество "ЭнергоПроект" (ЗАО "ЭнергоПроект")
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Открытое Акционерное Общество "Федеральная Сетевая Компания Единой Энергетической Системы" (Оао "Фск Еэс"), Закрытое акционерное общество "ЭнергоПроект" (ЗАО "ЭнергоПроект") filed Critical Открытое Акционерное Общество "Федеральная Сетевая Компания Единой Энергетической Системы" (Оао "Фск Еэс")
Priority to RU2012122516/07A priority Critical patent/RU2505897C1/en
Publication of RU2012122516A publication Critical patent/RU2012122516A/en
Application granted granted Critical
Publication of RU2505897C1 publication Critical patent/RU2505897C1/en

Links

Abstract

FIELD: electricity.
SUBSTANCE: invention can be used at high-voltage substations which require melting ice on wires of overhead power lines. Controlled melting of ice on overhead power lines is carried out with low-frequency current generated by a three-phase self-contained voltage inverter, and the effective melting current value is set and maintained at the required level by varying supply voltage of the inverter. Melting is carried out simultaneously on three wires of the overhead power line, which are connected to output terminals of the three-phase voltage inverter and shorted at the opposite end of the line. The line performs the function of a three-phase load of the inverter with Y phase connection.
EFFECT: minimising the number of switches needed to switch from the compensation mode to the controlled ice melting mode and back; longer allowable length of the overhead power line compared with controlled ice melting with alternating current at industrial frequency, easy organisation, shorter duration of the ice melting process, reduced amount of additional switching equipment.

Description

The invention relates to the field of electrical engineering and can be used in high voltage substations requiring smelting ice on the wires of overhead power lines (VL).
Known methods of melting ice on overhead lines with alternating current of industrial frequency (see Guidelines for melting ice with alternating current: 4.1. MU 34-70-027-82. - M .: 1983). When the line is powered by an adjustable AC source, melting is carried out simultaneously on three line wires shorted at the opposite end, which minimizes the duration of the melting process. However, the inductive resistance of the line wires, several times greater than their active resistance, significantly limits the limiting length of the overhead line at which ice can be melted in this way.
It is possible to increase the permissible lengths of overhead lines by melting ice with direct current while supplying the line wires from a controlled rectifier (see www: \\ niipt.ru> departmens / nio_4 / ice-1.pdf). With the commonly used “wire-two-wire” connection option, the circuit formed by one of the line wires and two other wires connected in parallel is first connected to the output of the rectifier. At the end of the ice melting on the first wire, a second and then a third wire is connected in its place. However, with this method, the organization of ice melting is significantly complicated, the melting time is increased, a large number of additional switching equipment is required at both ends of the line with its periodic switching during the melting process.
The technical effect of the proposal is to increase the permissible length of overhead lines in comparison with controlled smelting of ice by alternating current of industrial frequency, simplifying organization, reducing the duration of the process of melting ice, reducing the number of additional switching equipment - in comparison with the controlled method of melting with direct current.
To achieve this effect, controlled ice melting on overhead lines is performed by a low-frequency current generated by a three-phase autonomous voltage inverter, and the effective value of the melting current is set and maintained at the required level by changing the inverter supply voltage.
Melting is carried out simultaneously on three overhead wires connected to the output terminals of a three-phase autonomous voltage inverter and shorted at the opposite end of the line. The line at the same time performs the functions of a three-phase load of the inverter with the connection of phases into a star. At a frequency of the inverter output voltage of a few tenths of a Hertz or lower, the current in the line wires is limited only by active resistance, and controlled ice melting, with the same supply voltage, is possible on lines of the same length as with direct current melting. But at the same time, there is no need to use additional switching equipment and line switching in the process of melting ice, because These functions are assumed by the non-contact semiconductor switches on which the inverter is made. During the period of the inverter output voltage, the overhead wires are connected twice according to the “wire-two wires” scheme with their necessary permutations, similar to permutations during smelting of ice with direct current.

Claims (1)

  1. A method of controlled melting of ice on wires of overhead power lines with alternating current, characterized in that the melting is carried out by a low-frequency current generated by a three-phase autonomous voltage inverter, and the effective value of the melting current is set and maintained at the required level by changing the inverter supply voltage.
RU2012122516/07A 2012-05-31 2012-05-31 Method for controlled melting of ice on overhead power lines with alternating current RU2505897C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU2012122516/07A RU2505897C1 (en) 2012-05-31 2012-05-31 Method for controlled melting of ice on overhead power lines with alternating current

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU2012122516/07A RU2505897C1 (en) 2012-05-31 2012-05-31 Method for controlled melting of ice on overhead power lines with alternating current

Publications (2)

Publication Number Publication Date
RU2012122516A RU2012122516A (en) 2013-12-10
RU2505897C1 true RU2505897C1 (en) 2014-01-27

Family

ID=49682671

Family Applications (1)

Application Number Title Priority Date Filing Date
RU2012122516/07A RU2505897C1 (en) 2012-05-31 2012-05-31 Method for controlled melting of ice on overhead power lines with alternating current

Country Status (1)

Country Link
RU (1) RU2505897C1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2356148C1 (en) * 2008-05-15 2009-05-20 Московский государственный институт радиотехники, электроники и автоматики (технический университет) (МИРЭА) Method and device for deicing on electric power lines
RU2422963C2 (en) * 2009-05-08 2011-06-27 Открытое акционерное общество "Научно-исследовательский институт по передаче электроэнергии постоянным током высокого напряжения" (ОАО "НИИПТ") Device to melt silver thaw on wires and cables of overhead line (versions)
WO2011153497A2 (en) * 2010-06-03 2011-12-08 The Trustees Of Dartmouth College System and method for de-icing conductive objects utilizing at least one variable resistance conductor with high frequency excitation
CN202084891U (en) * 2011-04-07 2011-12-21 云南电力试验研究院(集团)有限公司 Mechanical vibration deicer of overhead ground wire for electric power

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2356148C1 (en) * 2008-05-15 2009-05-20 Московский государственный институт радиотехники, электроники и автоматики (технический университет) (МИРЭА) Method and device for deicing on electric power lines
RU2422963C2 (en) * 2009-05-08 2011-06-27 Открытое акционерное общество "Научно-исследовательский институт по передаче электроэнергии постоянным током высокого напряжения" (ОАО "НИИПТ") Device to melt silver thaw on wires and cables of overhead line (versions)
WO2011153497A2 (en) * 2010-06-03 2011-12-08 The Trustees Of Dartmouth College System and method for de-icing conductive objects utilizing at least one variable resistance conductor with high frequency excitation
CN202084891U (en) * 2011-04-07 2011-12-21 云南电力试验研究院(集团)有限公司 Mechanical vibration deicer of overhead ground wire for electric power

Also Published As

Publication number Publication date
RU2012122516A (en) 2013-12-10

Similar Documents

Publication Publication Date Title
US9042131B2 (en) Power-packet-switching converter with sequenced connection to link inductor
US9654036B2 (en) Power conversion device and power conversion method
US10396675B2 (en) Switching power supply apparatus
RU2014152857A (en) ELECTRONIC POWER SUPPLY WITH SCALABLE VOLTAGE AND CURRENT TRANSMISSION LINE FOR MULTI-PHASE LOADS OF AC OR DC
WO2014189675A3 (en) High voltage direct current transmission and distribution system
US10186874B2 (en) Predicting high-voltage direct current transmission in a wind turbine system
WO2013151907A9 (en) Bi-directional energy converter with multiple dc sources
US10434882B2 (en) Track-bound vehicle converter
WO2013030236A3 (en) Photovoltaic dc/ac inverter with cascaded h- bridge converters
BRPI0924037B1 (en) electric power converter
GB2530673A (en) Apparatus for controlling an alternating current machine
CN101512865A (en) Transition from AC line to high voltage DC line
DK200100140A (en) Combined AC-DC to DC converter
RU2013138457A (en) POWER TRANSFORM DEVICE
GB2544201A (en) Switched mode converter with low-voltage turn-around mode
MX2010006973A (en) Power supply for a load control device.
RU2014133045A (en) POWER TRANSFORM DEVICE
CN105917431B (en) For switching the device of DC current
WO2011154306A3 (en) Electrical energy store and method for closed-loop control of an energy store such as this
WO2014135903A3 (en) Ac/ac converter for a brushless motor
RU2010148553A (en) ELECTRIC POWER ACCUMULATION SYSTEM THAT MAXIMIZES THE USE OF RENEWABLE ENERGY
JP2004350354A (en) Inverter power supply
FR2963499B1 (en) Electrical power system of an aircraft
US10056846B2 (en) Apparatus and method for insulation design of high voltage direct current transmission system
US9774187B2 (en) Coupling-in and coupling-out of power in a branch of a DC voltage network node comprising a longitudinal voltage source