WO2017193983A1 - Novel coupling power fault current limiter - Google Patents

Novel coupling power fault current limiter Download PDF

Info

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
Authority
WO
WIPO (PCT)
Prior art keywords
coil
wound
iron core
coils
core
Prior art date
Application number
PCT/CN2017/084065
Other languages
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.)
Filing date
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/en
Publication of WO2017193983A1 publication Critical patent/WO2017193983A1/en

Links

Images

Classifications

    • 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.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

A coupling power fault current limiter, comprising an iron core (100) and a plurality of coils (200). The iron core comprises a plurality of iron core posts (101) which are connected in parallel. The plurality of coils comprises at least one alternating current coil (201) and a direct current coil (202). At least one alternating current coil is wound around each of the plurality of iron core posts. The direct current coil is simultaneously wound around the plurality of iron core posts. Two or more iron core posts wound with the at least one alternating current coil are connected in parallel, and the alternating current coils connected in parallel, as a whole, are connected in series to an alternating current power transmission loop (300). The direct current coil simultaneously wound around the plurality of iron core posts is connected in series to a direct current excitation power supply system (400). The current limiter has a low impedance in a normal running state and a high impedance in a short-circuit fault condition; the switching between high impedance and low impedance can be quick implemented, and the excessive high short-circuit current in a power system is effectively limited.

Description

一种新型耦合型电力故障限流器A Novel Coupled Power Fault Current Limiter
本发明要求于2016年05月12日提交中国专利局、申请号为201610316738.8、发明名称为“一种新型耦合型电力故障限流器”的中国专利申请的优先权，其全部内容通过引用结合在本发明中。The present invention claims priority to Chinese Patent Application No. 201610316738.8, entitled "A New Type of Coupling Type Power Fault Current Limiter", filed on May 12, 2016, the entire contents of which are incorporated herein by reference. In the present invention.
技术领域Technical field
本发明涉及一种适用于电网故障的限流设备，更具体地说，涉及一种新型耦合型电力故障限流器。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.
背景技术Background technique
随着电力系统的迅速发展，电力系统短路容量日益增加，最大短路电流甚至超过了断路器的最大开断能力。随着短路电流水平的逐渐增大，对输变电设备的短路耐受能力要求也进一步提高。With the rapid development of the power system, 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. As the level of short-circuit current increases, the short-circuit withstand capability requirements for power transmission and transformation equipment are further improved.
因此，如何限制电力系统中的短路电流过大成为当前亟需解决的问题。Therefore, how to limit the excessive short-circuit current in the power system has become an urgent problem to be solved.
发明内容Summary of the invention
有鉴于此，本发明提供一种新型耦合型电力故障限流器，以用于限制电力系统中的短路电流过大。技术方案如下：In view of this, 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:
本发明提供一种新型耦合型电力故障限流器，包括：铁芯和多个线圈，其中，所述铁芯包括多个铁芯柱，所述多个铁芯柱并联连接，所述多个线圈包括至少一个交流线圈和一个直流线圈；所述多个铁芯柱中的每个铁芯柱上至少缠绕一个交流线圈，所述多个铁芯柱同时缠绕一个直流线圈；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;
两个及两个以上个缠绕有至少一个交流线圈的铁芯柱间并联连接，并联连接后的交流线圈整体串联连接至交流输电回路；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;
所述多个铁芯柱同时缠绕的一个直流线圈，串联连接至直流励磁电源系统。The one DC coil wound by the plurality of core legs is connected in series to the DC excitation power system.
优选地，所述多个铁芯柱中的每个铁芯柱上缠绕一个交流线圈，所述多个铁芯柱同时缠绕一个直流线圈。Preferably, 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.
优选地，所述多个铁芯柱中的每个铁芯柱上缠绕两个交流线圈，所述多个 铁芯柱同时缠绕一个直流线圈。Preferably, 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.
优选地，所述每个铁芯柱上缠绕的两个交流线圈之间交叉连接。Preferably, the two alternating current coils wound on each of the core legs are cross-connected.
优选地，当所述多个铁芯柱中的每个铁芯柱上缠绕至少两个交流线圈时，每个铁芯柱上交叉连接的至少两个交流线圈的交叉连接处，与所述直流线圈的引出端连接形成回路。Preferably, when at least two alternating current coils are wound on each of the plurality of core legs, a cross connection of at least two alternating current coils cross-connected on each of the iron core columns, and the direct current The terminals of the coils are connected to form a loop.
应用本发明的上述技术方案，本发明提供的新型耦合型电力故障限流器包括铁芯和多个线圈，其中，所述铁芯包括多个铁芯柱，所述多个铁芯柱并联连接，所述多个线圈包括至少一个交流线圈和一个直流线圈；所述多个铁芯柱中的每个铁芯柱上至少缠绕一个交流线圈，所述多个铁芯柱同时缠绕一个直流线圈；两个及两个以上个缠绕有至少一个交流线圈的铁芯柱间并联连接，并联连接后的交流线圈整体串联连接至交流输电回路；所述多个铁芯柱同时缠绕的一个直流线圈，串联连接至直流励磁电源系统。因此，本发明提供的新型耦合型电力故障限流器采用了新型耦合结构，即交流线圈并联连接方式，那么当其中一个铁芯柱的交流线圈发生故障时，另一铁芯柱的交流线圈可以继续挂网运行。在电网系统正常运行状态下，直流线圈通过直流电流不参与网侧运行，当电网系统发生短路故障时，直流线圈可作为限流电抗，在短路电流的正负半周期均自动接入到系统中，起到加强限制短路电流的作用。因此，本发明能够很好地满足在正常运行状态下阻抗低，短路故障情况下阻抗大的要求，实现了高/低阻抗的快速切换，有效限制了电力系统中的短路电流过大的问题。Applying the above technical solution of the present invention, the novel coupled power fault current limiter provided by the present invention comprises 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 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. Therefore, 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. In the normal operation state of the grid system, the DC coil does not participate in the grid side operation through the DC current. When the grid system has a short-circuit fault, 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. Therefore, 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.
附图说明DRAWINGS
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据提供的附图获得其他的附图。In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is an embodiment of the present invention, and those skilled in the art can obtain other drawings according to the provided drawings without any creative work.
图1为本发明提供的一种新型耦合型电力故障限流器的结构示意图；1 is a schematic structural view of a novel coupling type power fault current limiter provided by the present invention;
图2为本发明提供的一种新型耦合型电力故障限流器的另一种结构示意图； 2 is another schematic structural diagram of a novel coupling type power fault current limiter provided by the present invention;
图3为本发明提供的一种新型耦合型电力故障限流器的再一种结构示意图。FIG. 3 is a schematic structural diagram of still another novel coupling type power fault current limiter according to the present invention.
具体实施方式detailed description
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.
本发明提供一种新型耦合型电力故障限流器，具体包括：铁芯100和多个线圈200。其中，所述铁芯100选择的多柱式，包括多个铁芯柱101，所述多个铁芯柱101并联连接，所述多个线圈200包括至少一个交流线圈201和一个直流线圈202；所述多个铁芯柱101中的每个铁芯柱101上至少缠绕一个交流线圈201，所述多个铁芯柱101同时缠绕一个直流线圈202；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;
两个及两个以上个缠绕有至少一个交流线圈201的铁芯柱101间并联连接，并联连接后的交流线圈201整体串联连接至交流输电回路300；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;
所述多个铁芯柱101同时缠绕的一个直流线圈202，串联连接至直流励磁电源系统400。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.
下面发明人将以举例的方式具体对本发明的技术方案进行阐述。The following inventors will specifically explain the technical solutions of the present invention by way of example.
实施例一Embodiment 1
本实施例中每个铁芯柱101上缠绕一个交流线圈201，多个铁芯柱101同时缠绕一个直流线圈202。为了便于说明，如图1所示，以两个铁芯柱101为例来说，第一铁芯柱1011上缠绕第一交流线圈L1，第二铁芯柱1012上缠绕第二交流线圈L2，该第一交流线圈L1和第二交流线圈L2绕向相反。第一铁芯柱1011和第二铁芯柱1012上同时缠绕上直流线圈L。In this embodiment, 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. For convenience of description, as shown in FIG. 1 , taking the two core legs 101 as an example, the first iron core column 1011 is wound on the first AC coil L1, and 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.
在本实施例中，第一铁芯柱1011和第二铁芯柱1012并联连接，因此缠绕在第一铁芯柱1011上的第一交流线圈L1与缠绕在第二铁芯柱1012上的第二交流线圈L2也成并联连接。并联连接后的第一交流线圈L1和第二交流线圈L2的引出端A和X，将并联连接后的第一交流线圈L1和第二交流线圈L2整体串联连接至交流输电回路300。 In the present embodiment, 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.
直流线圈L的引出端a和x串联连接至直流励磁电源系统400。The terminals a and x of the DC coil L are connected in series to the DC excitation power system 400.
在本实施例中，本发明采用第一交流线圈L1和第二交流线圈L2，即两交流线圈并联连接结构，当本发明在电网系统正常运行时，直流线圈L通过直流电流不参与网侧运行，当电网系统发生故障，例如其中一个铁芯柱101上的交流线圈201发生故障时，直流线圈L可作为限流电抗，起到加强限制短路电流的作用。与其同时，另一铁芯柱101上的交流线圈201可以继续挂网运行，保证了电网的正常运行。In this embodiment, the present invention adopts a first AC coil L1 and a second AC coil L2, that is, two AC coils are connected in parallel. When the present invention is in normal operation of the power grid system, the DC coil L does not participate in the network side operation through the DC current. When 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. At the same time, 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.
实施例二Embodiment 2
如图2所示，其示出本发明提供的一种新型耦合型电力故障限流器的另一种结构示意图。在本实施例中，每个铁芯柱101上缠绕两个交流线圈201，多个铁芯柱101同时缠绕一个直流线圈202。As shown in FIG. 2, it shows another structural schematic diagram of a novel coupling type power fault current limiter provided by the present invention. In the present embodiment, 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.
具体的，仍以两个铁芯柱101为例来说，第一铁芯柱1011上缠绕第一交流线圈L1和第二交流线圈L2，第二铁芯柱1012上缠绕第三交流线圈L3和第四交流线圈L4。其中，第一交流线圈L1和第二交流线圈L2之间交叉连接，第三交流线圈L3和第四交流线圈L4之间交叉连接。需要说明的是，本实施例中两个铁芯柱101上各自缠绕的两个交流线圈201是先交叉连接，进而缠绕在铁芯柱101上的两个交流线圈201与缠绕在其他铁芯柱101上的两个交流线圈201间再并联连接。Specifically, taking the two core legs 101 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 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. It should be noted that, in the embodiment, 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.
在本实施例中，第一交流线圈L1和第三交流线圈L3绕向相反，第二交流线圈L2和第四交流线圈L4绕向相反，第一交流线圈L1和第四交流线圈L4绕向相反。第一铁芯柱1011和第二铁芯柱1012上同时缠绕上直流线圈L。In this embodiment, 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, and 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.
在本实施例中，第一铁芯柱1011和第二铁芯柱1012并联连接，第一铁芯柱1011上缠绕的第一交流线圈L1和第二交流线圈L2交叉连接，第二铁芯柱1012上缠绕的第三交流线圈L3和第四交流线圈L4交叉连接，而分别缠绕在第一铁芯柱1011和第二铁芯柱1012上的交流线圈201整体并联连接。并联连接后的交流线圈的引出端A和X，将并联连接后的交流线圈整体串联连接至交流输电回路300。In this embodiment, 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.
直流线圈L的引出端a和x串联连接至直流励磁电源系统400。 The terminals a and x of the DC coil L are connected in series to the DC excitation power system 400.
在本实施例中，本发明采用多个铁芯柱101间多个交流线圈201先交叉串联后在整体并联的连接结构，当本发明在电网系统正常运行时，直流线圈L通过直流电流不参与网侧运行，当电网系统发生故障，例如其中一个铁芯柱101上的交流线圈201发生故障时，直流线圈L可作为限流电抗，起到加强限制短路电流的作用。与其同时，另一铁芯柱101上的交流线圈201可以继续挂网运行，保证了电网的正常运行。In the present embodiment, 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. When the present invention is in normal operation of the power grid system, the DC coil L does not participate in DC current. The grid side operates. When 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. At the same time, 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.
实施例三 Embodiment 3
如图3所示，其示出了本发明提供的一种新型耦合型电力故障限流器的再一种结构示意图。本实施例可以在实施例二的基础上进行说明。As shown in FIG. 3, it 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.
当多个铁芯柱101中的每个铁芯柱101上缠绕至少两个交流线圈201时，如本实施例中每个铁芯柱101上缠绕两个交流线圈201时，每个铁芯柱101上交叉连接的至少两个交流线圈201的交叉连接处，与所述直流线圈202的引出端连接形成回路。When at least two AC coils 201 are wound on each of the plurality of core studs 101, as in the present 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.
具体的，本实施例中仍以两个铁芯柱101为例来说，第一铁芯柱1011上缠绕第一交流线圈L1和第二交流线圈L2，第二铁芯柱1012上缠绕第三交流线圈L3和第四交流线圈L4。其中，第一交流线圈L1和第二交流线圈L2之间交叉连接，第三交流线圈L3和第四交流线圈L4之间交叉连接。同样的，本实施例中两个铁芯柱101上各自缠绕的两个交流线圈201也是先交叉连接，进而缠绕在铁芯柱101上的两个交流线圈201与缠绕在其他铁芯柱101上的两个交流线圈201间再并联连接。Specifically, in the embodiment, 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 AC 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. Similarly, in the present embodiment, 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.
在本实施例中，第一交流线圈L1和第三交流线圈L3绕向相反，第二交流线圈L2和第四交流线圈L4绕向相反，第一交流线圈L1和第四交流线圈L4绕向相反。第一铁芯柱1011和第二铁芯柱1012上同时缠绕上直流线圈L。In this embodiment, 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, and 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.
在本实施例中，第一铁芯柱1011和第二铁芯柱1012并联连接，第一铁芯柱1011上缠绕的第一交流线圈L1和第二交流线圈L2交叉连接，第二铁芯柱1012上缠绕的第三交流线圈L3和第四交流线圈L4交叉连接，而分别缠绕在第一铁芯柱1011和第二铁芯柱1012上的交流线圈201整体并联连接。并联连接后的交流线圈的引出端A和X，将并联连接后的交流线圈整体串联连接至交流输电回 路300。In this embodiment, 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.
直流线圈L的引出端a和x与每个铁芯柱101上交叉连接的两个交流线圈的交叉连接处K1、K2连接形成回路。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.
在本实施例中，本发明采用多个铁芯柱101间多个交流线圈201先交叉串联后在整体并联的连接结构，当本发明在电网系统正常运行时，直流线圈L通过直流电流不参与网侧运行，当电网系统发生故障，例如其中一个铁芯柱101上的交流线圈201发生故障时，直流线圈L可作为限流电抗，起到加强限制短路电流的作用。与其同时，另一铁芯柱101上的交流线圈201可以继续挂网运行，保证了电网的正常运行。In the present embodiment, 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. When the present invention is in normal operation of the power grid system, the DC coil L does not participate in DC current. The grid side operates. When 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. At the same time, 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.
因此，应用本发明提供的上述技术方案，本发明提供的新型耦合型电力故障限流器能够很好地满足在正常运行状态下阻抗低，短路故障情况下阻抗大的要求，实现了高/低阻抗的快速切换，可满足电力系统重合闸的要求，且有效限制了电力系统中的短路电流过大的问题。Therefore, by applying the above technical solution provided by the present invention, 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.
此外，本发明还可以根据电力系统不同的限流阻抗要求，灵活选择不同铁芯柱101上的多个交流线圈201，以及铁芯柱101间的多个交流线圈201间的接线方式。本发明提供的新型耦合型电力故障限流器对于短路电流的响应为被动响应，不需要外部干预，响应时间接近为零。In addition, 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.
需要说明的是，在本文中，诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。It should be noted that, in this context, relational terms such as first and second are used merely to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply such entities or operations. There is any such actual relationship or order between them. Furthermore, the term "comprises" or "comprises" or "comprises" or any other variations thereof is intended to encompass a non-exclusive inclusion, such that a process, method, article, or device that comprises a plurality of elements includes not only those elements but also Other elements, or elements that are inherent to such a process, method, item, or device. An element that is defined by the phrase "comprising a ..." does not exclude the presence of additional equivalent elements in the process, method, item, or device that comprises the element.
以上对本发明所提供的一种新型耦合型电力故障限流器进行了详细介绍，本文中应用了具体个例对本发明的原理及实施方式进行了阐述，以上实施例的 说明只是用于帮助理解本发明的方法及其核心思想；同时，对于本领域的一般技术人员，依据本发明的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本发明的限制。 A new type of coupled power fault current limiter provided by the present invention is described in detail above. The principle and implementation manner of the present invention are described in the following. The description is only for helping to understand the method of the present invention and its core idea; at the same time, for those skilled in the art, according to the idea of the present invention, there will be changes in specific embodiments and application scopes. The contents of this specification are not to be construed as limiting the invention.

Claims (5)

  1. 一种新型耦合型电力故障限流器，其特征在于，包括：铁芯和多个线圈，其中，所述铁芯包括多个铁芯柱，所述多个铁芯柱并联连接，所述多个线圈包括至少一个交流线圈和一个直流线圈；所述多个铁芯柱中的每个铁芯柱上至少缠绕一个交流线圈，所述多个铁芯柱同时缠绕一个直流线圈；A novel coupling type power fault current limiter, comprising: an iron 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;
    两个及两个以上个缠绕有至少一个交流线圈的铁芯柱间并联连接，并联连接后的交流线圈整体串联连接至交流输电回路；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;
    所述多个铁芯柱同时缠绕的一个直流线圈，串联连接至直流励磁电源系统。The one DC coil wound by the plurality of core legs is connected in series to the DC excitation power system.
  2. 根据权利要求1所述的新型耦合型电力故障限流器，其特征在于，A novel coupled power fault current limiter according to claim 1 wherein:
    所述多个铁芯柱中的每个铁芯柱上缠绕一个交流线圈，所述多个铁芯柱同时缠绕一个直流线圈。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.
  3. 根据权利要求1所述的新型耦合型电力故障限流器，其特征在于，A novel coupled power fault current limiter according to claim 1 wherein:
    所述多个铁芯柱中的每个铁芯柱上缠绕两个交流线圈，所述多个铁芯柱同时缠绕一个直流线圈。Two AC coils are wound on each of the plurality of core legs, and the plurality of core legs are simultaneously wound with a DC coil.
  4. 根据权利要求3所述的新型耦合型电力故障限流器，其特征在于，A novel coupled power fault current limiter according to claim 3, wherein
    所述每个铁芯柱上缠绕的两个交流线圈之间交叉连接。The two AC coils wound on each of the core legs are cross-connected.
  5. 根据权利要求1、3或4所述的新型耦合型电力故障限流器，其特征在于，当所述多个铁芯柱中的每个铁芯柱上缠绕至少两个交流线圈时，每个铁芯柱上交叉连接的至少两个交流线圈的交叉连接处，与所述直流线圈的引出端连接形成回路。 A novel coupling type power failure current limiter according to claim 1, 3 or 4, wherein when at least two AC coils are wound on each of said plurality of core legs, each A cross-connection of at least two alternating current coils cross-connected on the iron core is connected to the leading end of the direct current coil to form a loop.
PCT/CN2017/084065 2016-05-12 2017-05-12 Novel coupling power fault current limiter WO2017193983A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112017002400.5T DE112017002400T5 (en) 2016-05-12 2017-05-12 NEW COUPLING POWER SUPPLY FAULT CURRENT LIMITER

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201610316738.8 2016-05-12
CN201610316738.8A CN105811387B (en) 2016-05-12 2016-05-12 A kind of coupled mode power failure current limiter

Publications (1)

Publication Number Publication Date
WO2017193983A1 true WO2017193983A1 (en) 2017-11-16

Family

ID=56457080

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2017/084065 WO2017193983A1 (en) 2016-05-12 2017-05-12 Novel coupling power fault current limiter

Country Status (3)

Country Link
CN (1) CN105811387B (en)
DE (1) DE112017002400T5 (en)
WO (1) WO2017193983A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105811387B (en) * 2016-05-12 2018-07-24 广东电网有限责任公司电力科学研究院 A kind of coupled mode power failure current limiter
CN107482601B (en) * 2017-08-24 2019-04-26 广东电网有限责任公司电力科学研究院 A kind of machinery rotating type restrictor apparatus

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1089640A1 (en) * 1982-02-23 1984-04-30 Ивановский Ордена "Знак Почета" Энергетический Институт Им.В.И.Ленина Current limiting device
WO2007029224A1 (en) * 2005-09-07 2007-03-15 Bar Ilan University Fault current limiters (fcl) with the cores saturated by superconducting coils
CN101521374A (en) * 2008-11-18 2009-09-02 李晓明 Short-circuit current limiting device of magnetic saturation reactor
CN103647264A (en) * 2013-12-19 2014-03-19 特变电工沈阳变压器集团有限公司 Strong coupled type power failure current limiter
CN105391039A (en) * 2015-11-18 2016-03-09 武汉大学 Parallel magnetic saturation fault current limiter based on rare earth permanent magnet material
CN105811387A (en) * 2016-05-12 2016-07-27 广东电网有限责任公司电力科学研究院 Novel coupling power fault current limiter

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008125022A1 (en) * 2007-04-17 2008-10-23 Innopower Superconductor Cable Co., Ltd Core-saturated superconductive fault current limiter and control method of the fault current limiter
CN201532826U (en) * 2009-10-20 2010-07-21 青岛菲特电器科技有限公司 Amorphous-alloy iron-core magnetically controlled reactor
CN102360765B (en) * 2011-09-05 2013-07-17 山东大学 Saturable reactor with cruciform iron core

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1089640A1 (en) * 1982-02-23 1984-04-30 Ивановский Ордена "Знак Почета" Энергетический Институт Им.В.И.Ленина Current limiting device
WO2007029224A1 (en) * 2005-09-07 2007-03-15 Bar Ilan University Fault current limiters (fcl) with the cores saturated by superconducting coils
CN101521374A (en) * 2008-11-18 2009-09-02 李晓明 Short-circuit current limiting device of magnetic saturation reactor
CN103647264A (en) * 2013-12-19 2014-03-19 特变电工沈阳变压器集团有限公司 Strong coupled type power failure current limiter
CN105391039A (en) * 2015-11-18 2016-03-09 武汉大学 Parallel magnetic saturation fault current limiter based on rare earth permanent magnet material
CN105811387A (en) * 2016-05-12 2016-07-27 广东电网有限责任公司电力科学研究院 Novel coupling power fault current limiter

Also Published As

Publication number Publication date
CN105811387B (en) 2018-07-24
DE112017002400T5 (en) 2019-01-24
CN105811387A (en) 2016-07-27

Similar Documents

Publication Publication Date Title
WO2013163853A1 (en) Reactor-type short circuit fault current limiter
CN103647264B (en) Close coupling type power failure current limiter
WO2017193983A1 (en) Novel coupling power fault current limiter
EP3073598B1 (en) Commutation apparatus based on controllable commutation inductor, and implementation method therefor
CN104078195A (en) Three-phase coupling reactor and converter
CN202373970U (en) Variable-impedance autotransformer type fault current limiter
CN106300309A (en) A kind of flexible direct current electric network fault current limiter with fast restoration capabilities
CN103354145A (en) Sectional type winding structure of superconducting fault current limiter
CN105391039B (en) A kind of parallel connection type magnetic saturation fault current limiter based on rare earth permanent-magnetic material
CN204271918U (en) A kind of LLC circuit
CN204271894U (en) A kind of drive circuit
CN102130447B (en) Thyristor controlled short circuit current limiter
CN103916038B (en) The short trouble processing method of three-level inverter parallel system
CN202258681U (en) Three-phase four-column intermediate-frequency transformer capable of providing zero-sequence path
CN103248053A (en) Harmonic suppression device for shunt controllable reactor
CN206533298U (en) Non- PT electricity getting devices with high-tension fuse
CN105356434A (en) Novel bridge type solid-state fault current limiter and using method thereof
CN206225155U (en) A kind of core structure of superconducting current-limiting reactor
CN202008919U (en) Zigzag transformer for low-voltage distribution network
CN201294382Y (en) Zero sequence harmonic filtering device for low-pressure system
CN203277069U (en) Novel electric energy optimizing machine
CN206640519U (en) A kind of inverter circuit and Switching Power Supply
CN204794015U (en) Electric leakage circuit breaker
CN112736861A (en) Direct-current energy router and fault isolation method thereof
CN205160082U (en) Intelligence control system who has reactive compensation function

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17795601

Country of ref document: EP

Kind code of ref document: A1

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 28/03/2019)

122 Ep: pct application non-entry in european phase

Ref document number: 17795601

Country of ref document: EP

Kind code of ref document: A1