WO2017193983A1 - 一种新型耦合型电力故障限流器 - Google Patents

一种新型耦合型电力故障限流器 Download PDF

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Publication number
WO2017193983A1
WO2017193983A1 PCT/CN2017/084065 CN2017084065W WO2017193983A1 WO 2017193983 A1 WO2017193983 A1 WO 2017193983A1 CN 2017084065 W CN2017084065 W CN 2017084065W WO 2017193983 A1 WO2017193983 A1 WO 2017193983A1
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WO
WIPO (PCT)
Prior art keywords
coil
wound
iron core
coils
core
Prior art date
Application number
PCT/CN2017/084065
Other languages
English (en)
French (fr)
Chinese (zh)
Inventor
宋萌
夏亚君
梅桂华
罗运松
程文锋
李力
陈迅
Original Assignee
广东电网有限责任公司电力科学研究院
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.)
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Publication date
Application filed by 广东电网有限责任公司电力科学研究院 filed Critical 广东电网有限责任公司电力科学研究院
Priority to DE112017002400.5T priority Critical patent/DE112017002400T5/de
Publication of WO2017193983A1 publication Critical patent/WO2017193983A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F27/38—Auxiliary core members; Auxiliary coils or windings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F37/00—Fixed inductances not covered by group H01F17/00
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current

Definitions

  • the present invention relates to a current limiting device suitable for grid faults, and more particularly to a novel coupling type power fault current limiter.
  • the short-circuit capacity of the power system is increasing, and the maximum short-circuit current even exceeds the maximum breaking capacity of the circuit breaker.
  • the short-circuit withstand capability requirements for power transmission and transformation equipment are further improved.
  • the present invention provides a novel coupled type power fault current limiter for limiting excessive short circuit current in a power system.
  • the technical solutions are as follows:
  • the present invention provides a novel coupling type power fault current limiter, comprising: a core and a plurality of coils, wherein the iron core comprises a plurality of iron core columns, and the plurality of iron core columns are connected in parallel, the plurality of The coil includes at least one AC coil and one DC coil; at least one AC coil is wound on each of the plurality of core legs, and the plurality of core legs are simultaneously wound with a DC coil;
  • Two or more iron core columns wound with at least one AC coil are connected in parallel, and the AC coils connected in parallel are integrally connected in series to the AC power transmission circuit;
  • the one DC coil wound by the plurality of core legs is connected in series to the DC excitation power system.
  • an AC coil is wound on each of the plurality of core legs, and the plurality of core columns are simultaneously wound with a DC coil.
  • two AC coils are wound on each of the plurality of core legs, the plurality of The core column is wound with a DC coil at the same time.
  • the two alternating current coils wound on each of the core legs are cross-connected.
  • the plurality of coils include at least one alternating current coil and one direct current coil; at least one alternating current coil is wound on each of the plurality of core legs, and the plurality of core legs are simultaneously wound with one direct current coil; Two or more iron cores wound with at least one AC coil are connected in parallel, and the AC coils connected in parallel are integrally connected in series to the AC power transmission loop; the DC coils of the plurality of core pillars are simultaneously wound, connected in series Connect to a DC excitation power system.
  • the novel coupling type power fault current limiter provided by the present invention adopts a novel coupling structure, that is, the AC coil is connected in parallel, and when the AC coil of one of the iron core columns fails, the AC coil of the other iron core column can be Continue to hang the network to run.
  • the DC coil does not participate in the grid side operation through the DC current.
  • the DC coil can be used as the current-limiting reactance, and is automatically connected to the system during the positive and negative half cycles of the short-circuit current. , to strengthen the role of limiting short-circuit current.
  • the present invention can satisfactorily meet the requirements of low impedance in a normal operating state and large impedance in the case of a short-circuit fault, and realizes fast switching of high/low impedance, effectively limiting the problem of excessive short-circuit current in the power system.
  • FIG. 1 is a schematic structural view of a novel coupling type power fault current limiter provided by the present invention
  • FIG. 2 is another schematic structural diagram of a novel coupling type power fault current limiter provided by the present invention.
  • FIG. 3 is a schematic structural diagram of still another novel coupling type power fault current limiter according to the present invention.
  • the present invention provides a novel coupling type power failure current limiter, which specifically includes: a core 100 and a plurality of coils 200.
  • the plurality of pillars 101, the plurality of cores 101 are connected in parallel, and the plurality of coils 200 include at least one AC coil 201 and one DC coil 202;
  • Each of the plurality of core studs 101 is wound with at least one AC coil 201, and the plurality of core studs 101 are simultaneously wound with a DC coil 202;
  • Two or more iron cores 101 wound with at least one AC coil 201 are connected in parallel, and the AC coils 201 connected in parallel are connected in series to the AC power transmission circuit 300;
  • a DC coil 202 that is simultaneously wound by the plurality of core legs 101 is connected in series to the DC excitation power system 400.
  • an AC coil 201 is wound around each of the core studs 101, and a plurality of core studs 101 are wound around a DC coil 202 at the same time.
  • the first iron core column 1011 is wound on the first AC coil L1
  • the second iron core column 1012 is wound on the second AC coil L2.
  • the first AC coil L1 and the second AC coil L2 are wound in opposite directions.
  • the DC core L is wound on the first core post 1011 and the second core post 1012 at the same time.
  • the first core post 1011 and the second iron core post 1012 are connected in parallel, so the first AC coil L1 wound on the first core post 1011 and the first wound on the second core post 1012
  • the two AC coils L2 are also connected in parallel.
  • the first AC coil L1 and the second AC coil L2 connected in parallel are connected in series to the AC power transmission circuit 300 in series with the first AC coil L1 and the second AC coil L2 connected in parallel.
  • the terminals a and x of the DC coil L are connected in series to the DC excitation power system 400.
  • the present invention adopts a first AC coil L1 and a second AC coil L2, that is, two AC coils are connected in parallel.
  • the DC coil L does not participate in the network side operation through the DC current.
  • the grid system fails, for example, when the AC coil 201 on one of the core legs 101 fails, the DC coil L can serve as a current limiting reactance to enhance the limitation of the short circuit current.
  • the AC coil 201 on the other core column 101 can continue to operate on the net to ensure the normal operation of the power grid.
  • FIG. 2 shows another structural schematic diagram of a novel coupling type power fault current limiter provided by the present invention.
  • two AC coils 201 are wound on each of the core studs 101, and a plurality of core studs 101 are wound around a DC coil 202 at the same time.
  • the first iron core column 1011 is wound with the first alternating current coil L1 and the second alternating current coil L2, and the second iron core post 1012 is wound with the third alternating current coil L3 and The fourth AC coil L4.
  • the first AC coil L1 and the second AC coil L2 are cross-connected, and the third AC coil L3 and the fourth AC coil L4 are cross-connected.
  • the two AC coils 201 wound on the two core legs 101 are first cross-connected, and then the two AC coils 201 wound on the iron core column 101 are wound around other iron core columns.
  • the two AC coils 201 on the 101 are connected in parallel again.
  • the first alternating current coil L1 and the third alternating current coil L3 are wound in opposite directions
  • the second alternating current coil L2 and the fourth alternating current coil L4 are wound in opposite directions
  • the first alternating current coil L1 and the fourth alternating current coil L4 are wound in opposite directions.
  • the DC core L is wound on the first core post 1011 and the second core post 1012 at the same time.
  • the first iron core column 1011 and the second iron core column 1012 are connected in parallel, and the first alternating current coil L1 and the second alternating current coil L2 wound on the first iron core column 1011 are cross-connected, and the second iron core column is connected.
  • the third AC coil L3 and the fourth AC coil L4 wound on the 1012 are cross-connected, and the AC coils 201 wound around the first core post 1011 and the second core post 1012 are integrally connected in parallel.
  • the terminals A and X of the AC coils connected in parallel connect the AC coils connected in parallel to the AC power transmission circuit 300 in series.
  • the terminals a and x of the DC coil L are connected in series to the DC excitation power system 400.
  • the present invention adopts a connection structure in which a plurality of AC coils 201 between a plurality of iron core pillars 101 are first crossed in series and then connected in parallel in the whole.
  • the DC coil L does not participate in DC current.
  • the grid side operates.
  • the grid system fails, for example, when the AC coil 201 on one of the core legs 101 fails, the DC coil L can act as a current limiting reactance to enhance the limitation of the short circuit current.
  • the AC coil 201 on the other core column 101 can continue to operate on the net to ensure the normal operation of the power grid.
  • FIG. 3 shows still another structural diagram of a novel coupling type power fault current limiter provided by the present invention. This embodiment can be explained on the basis of the second embodiment.
  • each of the core studs 101 is wound with two AC coils 201, each of which is bent.
  • the cross-connection of at least two AC coils 201 that are cross-connected at 101 is connected to the terminals of the DC coil 202 to form a loop.
  • the two core legs 101 are taken as an example, the first iron core column 1011 is wound with the first alternating current coil L1 and the second alternating current coil L2, and the second iron core column 1012 is wound with the third.
  • the first AC coil L1 and the second AC coil L2 are cross-connected, and the third AC coil L3 and the fourth AC coil L4 are cross-connected.
  • the two AC coils 201 wound on the two core legs 101 are also cross-connected first, and then the two AC coils 201 wound on the iron core column 101 are wound around the other iron core columns 101.
  • the two AC coils 201 are connected in parallel again.
  • the first alternating current coil L1 and the third alternating current coil L3 are wound in opposite directions
  • the second alternating current coil L2 and the fourth alternating current coil L4 are wound in opposite directions
  • the first alternating current coil L1 and the fourth alternating current coil L4 are wound in opposite directions.
  • the DC core L is wound on the first core post 1011 and the second core post 1012 at the same time.
  • the first iron core column 1011 and the second iron core column 1012 are connected in parallel, and the first alternating current coil L1 and the second alternating current coil L2 wound on the first iron core column 1011 are cross-connected, and the second iron core column is connected.
  • the third AC coil L3 and the fourth AC coil L4 wound on the 1012 are cross-connected, and the AC coils 201 wound around the first core post 1011 and the second core post 1012 are integrally connected in parallel.
  • the terminals A and X of the AC coil connected in parallel connect the AC coils connected in parallel to the AC power transmission line in series Road 300.
  • the terminals a and x of the DC coil L are connected to the intersections K1 and K2 of the two AC coils cross-connected on each of the core legs 101 to form a loop.
  • the present invention adopts a connection structure in which a plurality of AC coils 201 between a plurality of iron core pillars 101 are first crossed in series and then connected in parallel in the whole.
  • the DC coil L does not participate in DC current.
  • the grid side operates.
  • the grid system fails, for example, when the AC coil 201 on one of the core legs 101 fails, the DC coil L can act as a current limiting reactance to enhance the limitation of the short circuit current.
  • the AC coil 201 on the other core column 101 can continue to operate on the net to ensure the normal operation of the power grid.
  • the novel coupled power fault current limiter provided by the present invention can satisfactorily meet the requirements of low impedance under normal operating conditions and high impedance under short circuit fault conditions, and achieve high/low performance.
  • the fast switching of the impedance can meet the requirements of the power system reclosing, and effectively limits the problem of excessive short-circuit current in the power system.
  • the present invention can flexibly select a plurality of AC coils 201 on different iron core pillars 101 and a plurality of AC coils 201 between the iron core pillars 101 according to different current limiting impedance requirements of the power system.
  • the novel coupled power fault current limiter provided by the present invention responds passively to the short-circuit current without external intervention, and the response time is close to zero.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Emergency Protection Circuit Devices (AREA)
PCT/CN2017/084065 2016-05-12 2017-05-12 一种新型耦合型电力故障限流器 WO2017193983A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112017002400.5T DE112017002400T5 (de) 2016-05-12 2017-05-12 Neuer kopplungs-energieversorgungs-fehlerstrombegrenzer

Applications Claiming Priority (2)

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CN201610316738.8A CN105811387B (zh) 2016-05-12 2016-05-12 一种耦合型电力故障限流器
CN201610316738.8 2016-05-12

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WO2017193983A1 true WO2017193983A1 (zh) 2017-11-16

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DE (1) DE112017002400T5 (de)
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Publication number Priority date Publication date Assignee Title
CN105811387B (zh) * 2016-05-12 2018-07-24 广东电网有限责任公司电力科学研究院 一种耦合型电力故障限流器
CN107482601B (zh) * 2017-08-24 2019-04-26 广东电网有限责任公司电力科学研究院 一种机械旋转式限流器装置

Citations (6)

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SU1089640A1 (ru) * 1982-02-23 1984-04-30 Ивановский Ордена "Знак Почета" Энергетический Институт Им.В.И.Ленина Токоорганичивающее устройство
WO2007029224A1 (en) * 2005-09-07 2007-03-15 Bar Ilan University Fault current limiters (fcl) with the cores saturated by superconducting coils
CN101521374A (zh) * 2008-11-18 2009-09-02 李晓明 一种磁饱和电抗器短路电流限制装置
CN103647264A (zh) * 2013-12-19 2014-03-19 特变电工沈阳变压器集团有限公司 强耦合型电力故障限流器
CN105391039A (zh) * 2015-11-18 2016-03-09 武汉大学 一种基于稀土永磁材料的并联型磁饱和故障限流器
CN105811387A (zh) * 2016-05-12 2016-07-27 广东电网有限责任公司电力科学研究院 一种新型耦合型电力故障限流器

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EP2139088B1 (de) * 2007-04-17 2012-10-31 Innopower Superconductor Cable Co., Ltd Kerngesättiger supraleitender fehlerstrombegrenzer und steuerverfahren des fehlerstrombegrenzers
CN201532826U (zh) * 2009-10-20 2010-07-21 青岛菲特电器科技有限公司 非晶合金铁芯磁控电抗器
CN102360765B (zh) * 2011-09-05 2013-07-17 山东大学 一种十字型铁芯饱和电抗器

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1089640A1 (ru) * 1982-02-23 1984-04-30 Ивановский Ордена "Знак Почета" Энергетический Институт Им.В.И.Ленина Токоорганичивающее устройство
WO2007029224A1 (en) * 2005-09-07 2007-03-15 Bar Ilan University Fault current limiters (fcl) with the cores saturated by superconducting coils
CN101521374A (zh) * 2008-11-18 2009-09-02 李晓明 一种磁饱和电抗器短路电流限制装置
CN103647264A (zh) * 2013-12-19 2014-03-19 特变电工沈阳变压器集团有限公司 强耦合型电力故障限流器
CN105391039A (zh) * 2015-11-18 2016-03-09 武汉大学 一种基于稀土永磁材料的并联型磁饱和故障限流器
CN105811387A (zh) * 2016-05-12 2016-07-27 广东电网有限责任公司电力科学研究院 一种新型耦合型电力故障限流器

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CN105811387A (zh) 2016-07-27
CN105811387B (zh) 2018-07-24

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