CN104813555A - 环形***中限流器的操作方法 - Google Patents

环形***中限流器的操作方法 Download PDF

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Publication number
CN104813555A
CN104813555A CN201380054283.1A CN201380054283A CN104813555A CN 104813555 A CN104813555 A CN 104813555A CN 201380054283 A CN201380054283 A CN 201380054283A CN 104813555 A CN104813555 A CN 104813555A
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cable system
load bus
annular load
input transformer
electrical network
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CN201380054283.1A
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K-H·哈藤格
R·博克霍尔特
V·格拉菲
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ABB Technology AG
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ABB Transmit Oy
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    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
    • H02H3/083—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current for three-phase systems
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/44—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to the rate of change of electrical quantities
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/04—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for transformers
    • H02H7/042—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for transformers for current transformers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
    • H02H7/267—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured for parallel lines and wires
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
    • H02H7/28—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured for meshed systems

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

环形***形式的电网包括多个输入变压器(T1...Tn)，其相互并联设置在源总线/电缆***(1)和环形负载总线/电缆***(2)之间，其中环形负载总线/电缆***(2)包括多个限流器(A1...An)，多个限流器设置在每个输入变压器(T1...Tn)与环形负载总线/电缆***(2)的连接点(BB1...BBn)的两侧以便在故障事件中减小环形负载总线/电缆***(2)中的电流，其特征在于，在故障事件中发生故障的输入变压器(T1；T2；T3)的连接点(BB1；BB2；BB3)两侧的两个限流器(A3，A1；A1，A2；A2，A3)同时跳闸以便减小环形负载总线/电缆***(2)中的电流。

Description

环形***中限流器的操作方法
技术领域
本发明涉及一种包含多个输入变压器的环形***形式的电网，多个输入变压器相互并联设置在源总线/电缆***和环形负载总线/电缆***之间，其中环形负载总线/电缆***包括多个限流器，其设置在每个输入变压器与环形负载总线/电缆***的连接点的两侧以便在故障事件中减小环形负载总线/电缆***中的电流。
背景技术
本发明的主题是特别应用于电力网络、工业网络和私人网络。在这些网络中发生单相、双相或者三相故障时，电压将最少下降全部***中的四个半周期，因为保护***与开关装置协作需要这些时间段来关闭电流。该电压降将会引起连接到这种电网的电压敏感装置和***(例如医院中的电设备)的可靠性问题，。根据本发明的电网是以包括多个输入变压器的环形***的形式提供的。
发明内容
本发明的一个目的是提供根据权利要求1前序部分的环形***形式的电网，其中用于在故障事件中电压下降的时间段通过简单的电气手段所限制。
根据本发明，在故障事件中发生故障的输入变压器的连接点两侧的两个限流器同时跳闸以便减小环形负载总线/电缆***中的电流。
由于这种特殊的解决方案，电网的不直接包含故障区域的多个部分中的电压下降的时间段能被限制到一个半周期甚至更少。
对于至少一个输入变压器来说所必须的至少两个限流器被提供特殊的跳闸标准，其中由限流器限定的不同的保护区域之一的总电流的瞬时电流与相同的总电流的上升率进行逻辑与(AND)组合。
总电流被设定为如下方式，进一步处理的反应时间被减少到最小。
在环形***中用于操作限流器的这些特殊的跳闸标准比任何其他电气设备和***更快，特别是，比结合了断路器的现有的保护继电器更快。根据本发明的解决方案提供了一种用于电压敏感设备和***的更安全的电源，并且其还减小了电弧能量因此减小了在电弧故障时的影响。
附图说明
本发明的前述和其他方面在随后结合所包括的附图而对本发明的具体描述中将变得清晰。
图1示出了环形***形式中电网的电路图，以及
图2示出了图1所示环形***中所集成的限流器的开关状态表。
具体实施方式
图1所示的电网包括三个输入变压器T1、T2和T3，以便提供电源。所述三个输入变压器T1、T2和T3相互并联设置在源总线/电缆***(1)和电网的负载侧的环形负载总线/电缆***(2)之间。
环形负载总线/电缆***(2)包括多个限流器A1、A2和A3，其分别配置在每个输入变压器T1，T2或者T3的连接点BB1，BB2和BB3的两侧。所述连接点BB1、BB2和BB3将每个输入变压器T1，T2和T3的输出线连接到环形负载总线/电缆***(2)。根据图2的表中所示的特殊的跳闸标准，环形负载总线/电缆***(2)的三个限流器A1，A2和A3在故障事件中减小了环形负载总线/电缆***(2)中的电流。
第—输入变压器T1对应于设置在连接点BB1两侧的两个限流器A1和A3。第二输入变压器T2对应于设置在连接点BB2两侧的两个限流器A2和A1。第三输入变压器T3对应于设置在相应连接点BB3两侧的两个限流器A3和A2。
相应的输入变压器T1至T3的每两个限流器A1、A3；A2、A1；A3、A1同时跳闸以便在故障事件中减小环形负载总线/电缆***中的电流。
在图2中可以看出，如果在变压器T1元件、限流器A1元件和限流器A3元件(包括连接点BB1)之间发生故障，则限流器A1和A3将跳闸。如果在变压器T2元件、限流器A1元件和限流器A2元件(包括连接点BB2)之间发生故障，则限流器A1和A2将跳闸。最后，如果在变压器T3元件、限流器A2元件和限流器A3元件(包括连接点BB3)之间发生故障，则限流器A2和A3将跳闸。
本发明不限于上述实施方式，其仅作为示例的方式进行表述。在由本申请权利要求所定义的保护范围内可以进行各种方式的修改。特别地，多于或者少于三个输入变压器可以被集成在环形负载总线/电缆***中。
参考标记
1源总线/电缆***
2环形负载总线/电缆***
T1...Tn 输入变压器
BB1...BBn 连接点
A1...An 限流器

Claims (4)

1.一种包括多个输入变压器(T1...Tn)的环形***形式的电网，所述多个输入变压器(T1...Tn)相互并联设置在源总线/电缆***(1)和环形负载总线/电缆***(2)之间，其中环形负载总线/电缆***(2)包括多个限流器(A1...An)，所述多个限流器设置在每个输入变压器(T1...Tn)与环形负载总线/电缆***(2)的连接点(BB1...BBn)的两侧以便在故障事件中减小环形负载总线/电缆***(2)中的电流，其特征在于，
在故障事件中，发生故障的输入变压器(T1；T2；T3)的连接点(BB1；BB2；BB3)的两侧的两个限流器(A3，A1；A1，A2；A2，A3)同时跳闸以便减小环形负载总线/电缆***(2)中的电流。
2.根据权利要求1所述的电网，其特征在于，
由限流器(A1；A2；A3)所限定的不同的保护区域之一的总电流的瞬时电流与所述同一总电流的上升率进行逻辑与组合。
3.根据权利要求1所述的电网，其特征在于，
三个输入变压器(T1，T2，T3)相互并联设置在源总线/电缆***(1)和环形负载总线/电缆***(2)之间，其中环形负载总线/电缆***(2)包括三个限流器(A1，A2，A3)，所述三个限流器成对设置在相应的输入变压器(T1；T2；T3)的每个连接点(BB1，BB2，BB3)的两侧。
4.根据前述权利要求中的一个所述的电网，其特征在于，
总电流被以如下方式设定，进一步处理的反应时间被减少到最小。
CN201380054283.1A 2012-10-16 2013-10-14 环形***中限流器的操作方法 Pending CN104813555A (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP12007164.2A EP2722954A1 (en) 2012-10-16 2012-10-16 Method of operate Is-limiters in ring systems
EP12007164.2 2012-10-16
PCT/EP2013/003080 WO2014060085A2 (en) 2012-10-16 2013-10-14 Method of operate is-limiters in ring systems

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EP (2) EP2722954A1 (zh)
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WO (1) WO2014060085A2 (zh)

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CN105291895B (zh) * 2015-11-17 2018-06-15 北京中恒博瑞数字电力科技有限公司 一种直接供电方式牵引网距离保护整定计算优化方法
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DK201870347A1 (en) 2018-01-24 2019-10-08 Apple Inc. Devices, Methods, and Graphical User Interfaces for System-Wide Behavior for 3D Models
RU2762827C1 (ru) * 2021-06-22 2021-12-23 Федеральное государственное бюджетное образовательное учреждение высшего образования «Национальный исследовательский университет «МЭИ» Ограничитель токов короткого замыкания

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EP2722954A1 (en) 2014-04-23
WO2014060085A2 (en) 2014-04-24
WO2014060085A3 (en) 2014-06-12
US10074972B2 (en) 2018-09-11
US20150280427A1 (en) 2015-10-01
EP2909908B1 (en) 2024-01-17
EP2909908A2 (en) 2015-08-26

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