RU2645746C1 - Two-branch dc transmission substation - Google Patents

Two-branch dc transmission substation Download PDF

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Publication number
RU2645746C1
RU2645746C1 RU2017119917A RU2017119917A RU2645746C1 RU 2645746 C1 RU2645746 C1 RU 2645746C1 RU 2017119917 A RU2017119917 A RU 2017119917A RU 2017119917 A RU2017119917 A RU 2017119917A RU 2645746 C1 RU2645746 C1 RU 2645746C1
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Russia
Prior art keywords
branch
switches
bridge
transmission substation
branches
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RU2017119917A
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Russian (ru)
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Илья Николаевич Джус
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Илья Николаевич Джус
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B7/00—Enclosed substations, e.g. compact substations
    • H02B7/06—Distribution substations, e.g. for urban network
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/36—Arrangements for transfer of electric power between ac networks via a high-tension dc link
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
    • H02M5/42—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
    • H02M5/44—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/60—Arrangements for transfer of electric power between AC networks or generators via a high voltage DC link [HVCD]

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Direct Current Feeding And Distribution (AREA)

Abstract

FIELD: electrical engineering; power engineering.
SUBSTANCE: two-branch DC transmission substation contains a grounding that is connected through the switches to the converter bridges of the two branches that are connected by another pole through a series of reactors connected to the line. To the common points of the branch switches and the branch the diagonals of the bridge are connected, formed by two bipolar switches, to the other diagonal of which the poles of the backup bridge are connected.
EFFECT: increase in reliability of a two-branch DC transmission substation.
1 cl, 1 dwg

Description

Относится к электроэнергетике, электрическим сетям и системам.Refers to the electric power industry, electric networks and systems.

Широко известна подстанция [1, 2] электропередачи постоянного тока (далее ПЭППТ), содержащая в ветвях выключатели, шунтирующие отдельные преобразовательные мосты. Недостаток установки состоит в относительно низком коэффициенте использования линии, ибо в случае ремонта, отказов мостов одна из ПЭППТ работает с пониженным напряжением. В [3] предложено включение дополнительного резервного моста, работающего с нулевым выходным напряжением в штатном режиме и с номинальным напряжением при повреждении одного из последовательных мостов. Такое предложение усложняет ПЭППТ.The substation [1, 2] for direct current power transmission (hereinafter referred to as PEPT) is widely known. It contains switches in the branches that shunt individual converter bridges. The disadvantage of the installation is the relatively low utilization of the line, because in the case of repairs, bridge failures, one of the PEPT operates with a reduced voltage. In [3], the inclusion of an additional backup bridge, working with zero output voltage in the normal mode and with a nominal voltage when one of the serial bridges is damaged, was proposed. Such a proposal complicates PEPT.

Прототипом предложения, как наиболее близким по схемотехнике, является [4] ПЭППТ, содержащая заземление, которое через выключатели соединено с преобразовательными мостами двух ветвей, которые другим полюсом объединены через последовательно включенные реакторы с линией. Недостаток устройства состоит в относительно низкой надежности и пониженном коэффициенте использования по вышеупомянутой причине.The prototype of the proposal, as the closest in circuitry, is [4] PEPT, containing ground, which is connected via switches to converter bridges of two branches, which are connected to the other via series reactors with a line. The disadvantage of this device is the relatively low reliability and reduced utilization for the above reason.

Техническим результатом предложения является повышение надежности.The technical result of the proposal is to increase reliability.

Технический результат обеспечивается за счет того, что к общим точкам ветвевых выключателей и ветви подключены диагонали мостика, образованного двумя двухполюсными выключателями, в другую диагональ которого включены полюса резервного моста. На чертеже представлена схема подстанций 1 и 2 в униполярной электропередаче. Две одинаковые ПЭППТ 1 и 2 включены согласно через провод 3 линии. В состав каждой ПЭППТ входят: заземление 4, трансформаторы 5, мосты 6, линейные реакторы 7, выключатели 8. Параллельно мостам 6 включены шунтирующие аппараты 9. Имеются также дополнительный трансформатор 10 и резервный мост 11, который полюсами подключен к диагонали, образованный двухфазными выключателями 12 и 13. ПЭППТ работает следующим образом. Одна из подстанций 1(2) работает в выпрямительном режиме, преобразуя переменный ток шин 3 в постоянный, и передает его по линии 4 на другую подстанцию 2(1), где происходит обратное преобразование. В штатном режиме выключатели 8 замкнуты, а аппараты 9 разомкнуты. При этом резервный мост 10 не работает - нет импульсов управления. При сбое, аварии, выведении в ремонт одного моста 6 в одной из ветвей он шунтируется аппаратом 9, мост 10 вводится в работу путем включения одного из выключателей 12 (или 13) и отключения одного из выключателей 8 (той, которая содержит выводимый мост 6, шунтируемый аппаратом 9). Резервный мост 10 работает в составе ветви, восполняя собой выведенный из работы мост 6. Таким образом, один резервный мост 10 может быть использован в работе в составе любой ветви, что упрощает ПЭППТ.The technical result is ensured due to the fact that the diagonals of the bridge formed by two bipolar switches are connected to the common points of the branch switches and branches, the poles of the backup bridge are included in the other diagonal of the bridge. The drawing shows a diagram of substations 1 and 2 in a unipolar power transmission. Two identical PEPTs 1 and 2 are connected according to via wire 3 lines. Each PEPT includes: grounding 4, transformers 5, bridges 6, line reactors 7, switches 8. Parallel to bridges 6, shunt devices 9 are included. There is also an additional transformer 10 and a backup bridge 11, which is connected by poles to the diagonal formed by two-phase switches 12 and 13. PEPT works as follows. One of substations 1 (2) operates in a rectifier mode, converting the alternating current of buses 3 to direct, and transfers it via line 4 to another substation 2 (1), where the inverse transformation occurs. In normal mode, the switches 8 are closed, and the devices 9 are open. At the same time, the backup bridge 10 does not work - there are no control pulses. In the event of a failure, accident, repair of one bridge 6 in one of the branches, it is bypassed by the device 9, the bridge 10 is put into operation by turning on one of the switches 12 (or 13) and turning off one of the switches 8 (the one that contains the output bridge 6, shunted by device 9). The backup bridge 10 operates as part of a branch, replenishing the decommissioned bridge 6. Thus, one backup bridge 10 can be used in work as part of any branch, which simplifies PEPT.

Источники информацииInformation sources

1. Ивакин В.Н. и др. Электропередачи и вставки постоянного тока и статические тиристорные компенсаторы. М.: Энергоатомиздат, 1993, стр. 58, рис. 2.9.1. Ivakin V.N. etc. Power transmission and DC inserts and static thyristor compensators. M .: Energoatomizdat, 1993, p. 58, fig. 2.9.

2. Авторское свидетельство на изобретение СССР №628577, кл. H02J 1/00, 16.06.1977.2. Copyright certificate for the invention of the USSR No. 628577, class. H02J 1/00, 06/16/1977.

3. Авторское свидетельство на изобретение СССР №513654, кл. H02J 1/00, 19.02.1971.3. Copyright certificate for the invention of the USSR No. 513654, class. H02J 1/00, 02/19/1971.

4. Ивакин В.Н. и др. Электропередачи и вставки постоянного тока и статические тиристорные компенсаторы. М.: Энергоатомиздат, 1993, стр. 30, рис. 1.13.4. Ivakin V.N. etc. Power transmission and DC inserts and static thyristor compensators. M .: Energoatomizdat, 1993, p. 30, Fig. 1.13.

Claims (1)

Подстанция двухветвевой электропередачи постоянного тока, содержащая заземление, которое через выключатели соединено с преобразовательными мостами двух ветвей, которые другим полюсом объединены через последовательно включенные реакторы с линией, отличающаяся тем, что к общим точкам ветвевых выключателей и ветви подключены диагонали мостика, образованного двумя двухполюсными выключателями, в другую диагональ которого включены полюса резервного моста.A two-branch DC power transmission substation containing ground, which is connected via switches to two-branch converter bridges, which are connected to the other pole through series reactors with a line, characterized in that the diagonals of the bridge formed by two two-pole switches are connected to common points of the branch switches and branches, in another diagonal of which the poles of the backup bridge are included.
RU2017119917A 2017-06-07 2017-06-07 Two-branch dc transmission substation RU2645746C1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU513654A3 (en) * 1970-02-19 1976-05-05 Альменна Свенска Электриска Актиеболагет (Фирма) High Voltage Static Converter Station
SU311578A1 (en) * 1966-01-25 1977-09-05 Научно-Исследовательский Институт Постоянного Тока Dc converter substation
SU729744A1 (en) * 1978-09-12 1980-04-25 Отдел Изучения Эксплуатации Всесоюзного Электротехнического Института Им. В.И.Ленина На Волжской Гэс Dc power transmission line converter substation
CN201956919U (en) * 2010-12-14 2011-08-31 南京麦格安倍电气科技有限公司 Current type multiple pulse rectification circuit
RU2520312C1 (en) * 2013-02-14 2014-06-20 Анатолий Андреевич Лебедин Dc link

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU311578A1 (en) * 1966-01-25 1977-09-05 Научно-Исследовательский Институт Постоянного Тока Dc converter substation
SU513654A3 (en) * 1970-02-19 1976-05-05 Альменна Свенска Электриска Актиеболагет (Фирма) High Voltage Static Converter Station
SU729744A1 (en) * 1978-09-12 1980-04-25 Отдел Изучения Эксплуатации Всесоюзного Электротехнического Института Им. В.И.Ленина На Волжской Гэс Dc power transmission line converter substation
CN201956919U (en) * 2010-12-14 2011-08-31 南京麦格安倍电气科技有限公司 Current type multiple pulse rectification circuit
RU2520312C1 (en) * 2013-02-14 2014-06-20 Анатолий Андреевич Лебедин Dc link

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