CN103606888A - Reactive power compensation equipment circuit protecting method and device - Google Patents

Reactive power compensation equipment circuit protecting method and device Download PDF

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CN103606888A
CN103606888A CN201310647677.XA CN201310647677A CN103606888A CN 103606888 A CN103606888 A CN 103606888A CN 201310647677 A CN201310647677 A CN 201310647677A CN 103606888 A CN103606888 A CN 103606888A
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reactive
preset current
branch circuit
circuit
value
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CN103606888B (en
Inventor
周菲霞
刘洪涛
黄晓莉
陈志蓉
徐伟华
权白露
张巧玲
李苇
邹荣盛
李倩
向长征
陈维莉
刘宣宣
尹刚
肖异
汤宇晖
于彩虹
杨海鹏
郑理
王向平
沈斌
吴利军
李峰
袁泉
郭劲
潘生权
吴永洁
燕立
赵琳
盛志宇
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State Grid Corp of China SGCC
Northwest Electric Power Design Institute of China Power Engineering Consulting Group
Southwest Electric Power Design Institute Co Ltd of China Power Engineering Consulting Group
China Power Engineering Consulting Group East China Electric Power Design Institute Co Ltd
China Power Engineering Consultant Group Central Southern China Electric Power Design Institute Corp
Northeast Electric Power Design Institute of China Power Engineering Consulting Group
North China Electric Power Design Institute of China Power Engineering Consulting Group Corp
China Power Engineering Consulting Group Corp
Electric Power Planning and Engineering Institute Co Ltd
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State Grid Corp of China SGCC
Northwest Electric Power Design Institute of China Power Engineering Consulting Group
Southwest Electric Power Design Institute Co Ltd of China Power Engineering Consulting Group
China Power Engineering Consulting Group East China Electric Power Design Institute Co Ltd
China Power Engineering Consultant Group Central Southern China Electric Power Design Institute Corp
Northeast Electric Power Design Institute of China Power Engineering Consulting Group
North China Electric Power Design Institute of China Power Engineering Consulting Group Corp
China Power Engineering Consulting Group Corp
Electric Power Planning and Engineering Institute Co Ltd
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Abstract

本发明提供了一种无功设备回路保护方法及装置,该方法包括采集无功分支回路的故障电流,并判断所述故障电流是否大于预设电流闭锁定值,若大于所述预设电流闭锁定值,则跳开总回路断路器,若小于所述预设电流闭锁定值,则跳开所述无功分支回路的负荷开关。该方法通过设置预设电流闭锁定值,根据无功分支回路故障电流的大小,确定保护动作出口是动作于负荷开关还是动作于总回路的总断路器,使无功保护装置实现选择性跳闸,有效减小了故障切除范围。

Figure 201310647677

The invention provides a reactive equipment circuit protection method and device. The method includes collecting the fault current of the reactive branch circuit, and judging whether the fault current is greater than the preset current blocking lock value, and if it is greater than the preset current blocking value If it is less than the preset current locking value, then the load switch of the reactive branch circuit will be tripped. In this method, by setting the preset current locking value, according to the size of the reactive branch circuit fault current, it is determined whether the protection action outlet acts on the load switch or the main circuit breaker of the main circuit, so that the reactive power protection device can realize selective tripping. Effectively reduces the range of fault removal.

Figure 201310647677

Description

无功设备回路保护方法及装置Reactive equipment circuit protection method and device

技术领域technical field

本发明涉及电气领域,尤其涉及一种无功设备回路保护方法及装置。The invention relates to the electrical field, in particular to a method and device for protecting a reactive equipment circuit.

背景技术Background technique

110kV无功设备回路投切较频繁,因此在110kV无功分支回路装设了负荷开关,总回路装设瓷柱式断路器,110KV无功回路正常运行时,利用分支回路的负荷开关投切无功,利用总回路的断路器切除故障电流。The switching of 110kV reactive equipment circuits is frequent, so load switches are installed in the 110kV reactive branch circuits, and ceramic column circuit breakers are installed in the main circuit. work, use the circuit breaker of the main circuit to cut off the fault current.

为了保护110KV电路,防止故障电流对电路造成损坏,如图1所示,在110KV无功设备中设置无功保护装置。每条分支回路故障电流既有高达几十kA的短路电流,也有仅几十A的小电流,现有的无功保护装置并不区分故障电流的大小,只设置一个动作出口,即当出现故障电流时跳开总回路断路器。这种无选择性的跳闸方式,无疑扩大了故障切除范围。In order to protect the 110KV circuit and prevent the fault current from causing damage to the circuit, as shown in Figure 1, a reactive power protection device is set in the 110KV reactive power equipment. The fault current of each branch circuit has both a short-circuit current as high as tens of kA and a small current of only tens of A. The existing reactive power protection device does not distinguish the magnitude of the fault current, and only sets one action outlet, that is, when a fault occurs Trip the main circuit breaker when there is current. This non-selective tripping method undoubtedly expands the scope of fault removal.

因此,现在需要一种针对无功设备回路的保护方法,能够实现无功保护装置实现选择性跳闸,减小故障切除范围。Therefore, there is a need for a protection method for reactive power equipment circuits, which can realize selective tripping of reactive power protection devices and reduce the scope of fault removal.

发明内容Contents of the invention

本发明提供了一种无功设备回路保护方法及装置,该方法能够使无功保护装置实现选择性跳闸,有效减小了故障切除范围。The invention provides a reactive power equipment circuit protection method and device. The method can enable the reactive power protection device to realize selective tripping and effectively reduce the scope of fault removal.

为了实现上述目的,本发明采用以下技术手段:In order to achieve the above object, the present invention adopts the following technical means:

一种无功设备回路保护方法,包括:A reactive equipment circuit protection method, comprising:

采集无功分支回路的故障电流;Collect the fault current of the reactive branch circuit;

判断所述故障电流是否大于预设电流闭锁定值;judging whether the fault current is greater than a preset current locking value;

若大于所述预设电流闭锁定值,则跳开总回路断路器;If it is greater than the preset current locking lock value, trip the main circuit breaker;

若小于所述预设电流闭锁定值,则跳开所述无功分支回路的负荷开关。If it is less than the preset current locking value, the load switch of the reactive branch circuit is tripped.

优选的,在跳开总回路断路器的同时还包括:Preferably, when tripping the main circuit breaker, it also includes:

启动主变分支断路器的失灵及解复压闭锁。Start the failure of the main transformer branch circuit breaker and decompression lockout.

优选的,在跳开所述无功分支回路的负荷开关的同时还包括:Preferably, when jumping off the load switch of the reactive branch circuit, it also includes:

启动分支母线失灵保护及解除复压闭锁。Start the branch bus failure protection and release the complex pressure lockout.

一种无功设备回路保护装置,包括:A reactive equipment circuit protection device, comprising:

采集单元,用于采集无功分支回路的故障电流;The collection unit is used to collect the fault current of the reactive branch circuit;

判断单元,用于判断所述故障电流是否大于预设电流闭锁定值;A judging unit, configured to judge whether the fault current is greater than a preset current blocking lock value;

第一处理单元,用于若大于所述预设电流闭锁定值,则跳开总回路断路器;The first processing unit is configured to trip the main circuit breaker if it is greater than the preset current blocking lock value;

第二处理单元,用于若小于所述预设电流闭锁定值,则跳开所述无功分支回路的负荷开关。The second processing unit is configured to jump off the load switch of the reactive branch circuit if it is less than the preset current blocking lock value.

本发明提供了一种无功设备回路保护方法,该方法包括采集无功分支回路的故障电流,并判断所述故障电流是否大于预设电流闭锁定值,若大于所述预设电流闭锁定值,则跳开总回路断路器,若小于所述预设电流闭锁定值,则跳开所述无功分支回路的负荷开关。The invention provides a reactive device circuit protection method, which includes collecting the fault current of the reactive branch circuit, and judging whether the fault current is greater than the preset current locking value, and if it is greater than the preset current locking value , the main circuit breaker is tripped, and if it is less than the preset current locking value, the load switch of the reactive branch circuit is tripped.

该方法通过设置预设电流闭锁定值,根据无功分支回路故障电流的大小,确定保护动作出口是动作于负荷开关还是动作于总回路的总断路器,使无功保护装置实现选择性跳闸,有效减小了故障切除范围。In this method, by setting the preset current locking value, according to the size of the reactive branch circuit fault current, it is determined whether the protection action outlet acts on the load switch or the main circuit breaker of the main circuit, so that the reactive power protection device can realize selective tripping, Effectively reduces the range of fault removal.

附图说明Description of 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一些实施例,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,还可以根据这些附图获得其他的附图。In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

图1为110kV无功设备回路的结构示意图;Figure 1 is a schematic structural diagram of the 110kV reactive equipment circuit;

图2为本发明实施例公开的无功设备回路保护方法的流程图;Fig. 2 is a flow chart of the reactive equipment loop protection method disclosed by the embodiment of the present invention;

图3为本发明实施例公开的无功设备回路保护装置的结构示意图。Fig. 3 is a schematic structural diagram of a reactive device circuit protection device disclosed in an embodiment of the present invention.

具体实施方式Detailed ways

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 following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

如图2所示,本发明提供了一种无功设备回路保护方法,包括:As shown in Figure 2, the present invention provides a reactive equipment circuit protection method, including:

步骤S101:采集无功分支回路的故障电流;Step S101: collecting the fault current of the reactive branch circuit;

步骤S102:判断所述故障电流是否大于预设电流闭锁定值,若大于则进入步骤S103,若小于则进入步骤S104;Step S102: judging whether the fault current is greater than the preset current locking value, if greater, enter step S103, and if less, enter step S104;

步骤S103:若大于所述预设电流闭锁定值,则跳开总回路断路器;Step S103: If it is greater than the preset current locking lock value, trip the main circuit breaker;

步骤S104:若小于所述预设电流闭锁定值,则跳开所述无功分支回路的负荷开关。Step S104: If it is less than the preset current locking value, trip the load switch of the reactive branch circuit.

在跳开总回路断路器的同时还包括:启动主变分支断路器的失灵及解复压闭锁。While tripping the circuit breaker of the main circuit, it also includes: starting the failure of the branch circuit breaker of the main transformer and decompressing and blocking.

在跳开所述无功分支回路的负荷开关的同时还包括:启动分支母线失灵保护及解除复压闭锁。When jumping off the load switch of the reactive branch circuit, it also includes: starting the branch bus failure protection and releasing the recovery lockout.

下面对上述内容进行详细说明:The above content is described in detail below:

当无功分支回路出现故障时,无功设备采集无功分支回路的故障电流,并将故障电流自身内部预先存储的预设电流闭锁定值进行比较,若故障电流大于预设电流闭锁定值,则说明故障电流过大,由于负荷开关不能切断大电流,因此为了保护无功分支回路,无功设备将动作出口作用于总回路的断路器,并启动主变分支断路器的失灵及解复压闭锁。When the reactive branch circuit fails, the reactive device collects the fault current of the reactive branch circuit, and compares the preset current locking value stored in the fault current itself. If the fault current is greater than the preset current locking value, It means that the fault current is too large. Since the load switch cannot cut off the large current, in order to protect the reactive branch circuit, the reactive device will act on the circuit breaker of the main circuit at the outlet, and start the failure and decompression of the branch circuit breaker of the main transformer. atresia.

若故障电流小于预设电流闭锁定值,则说明故障电流很小,为了不扩大故障电流的影响范围,无功设备将动作出口作用于无功分支回路的负荷开关,于此同时启动分支母线失灵保护及解除复压闭锁。If the fault current is less than the preset current locking value, it means that the fault current is very small. In order not to expand the influence range of the fault current, the reactive device will act on the load switch of the reactive branch circuit at the outlet, and at the same time start the branch bus failure Protection and release of complex pressure lockout.

本发明提供的无功设备回路保护方法,通过设置预设电流闭锁定值,根据无功分支回路故障电流的大小,确定保护动作出口是动作于负荷开关还是动作于总回路的总断路器,使无功保护装置实现选择性跳闸,有效减小了故障切除范围。In the reactive equipment circuit protection method provided by the present invention, by setting the preset current locking value and according to the magnitude of the fault current of the reactive branch circuit, it is determined whether the protection action outlet acts on the load switch or the main circuit breaker of the main circuit, so that The reactive power protection device realizes selective tripping, which effectively reduces the scope of fault removal.

如图3所示,本发明还提供了一种无功设备回路保护装置,包括:As shown in Figure 3, the present invention also provides a reactive device circuit protection device, including:

采集单元100,用于采集无功分支回路的故障电流;The collection unit 100 is used to collect the fault current of the reactive branch circuit;

判断单元200,用于判断所述故障电流是否大于预设电流闭锁定值;A judging unit 200, configured to judge whether the fault current is greater than a preset current blocking lock value;

第一处理单元300,用于若大于所述预设电流闭锁定值,则跳开总回路断路器;The first processing unit 300 is configured to trip the main circuit breaker if it is greater than the preset current blocking lock value;

第二处理单元400,用于若小于所述预设电流闭锁定值,则跳开所述无功分支回路的负荷开关。The second processing unit 400 is configured to trip the load switch of the reactive branch circuit if it is less than the preset current blocking lock value.

本发明提供的无功设备回路保护装置,通过设置预设电流闭锁定值,根据无功分支回路故障电流的大小,确定保护动作出口是动作于负荷开关还是动作于总回路的总断路器,使无功保护装置实现选择性跳闸,有效减小了故障切除范围。The reactive equipment circuit protection device provided by the present invention determines whether the protective action outlet acts on the load switch or the main circuit breaker of the main circuit according to the magnitude of the fault current of the reactive branch circuit by setting the preset current locking value, so that The reactive power protection device realizes selective tripping, which effectively reduces the scope of fault removal.

本实施例方法所述的功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时,可以存储在一个计算设备可读取存储介质中。基于这样的理解,本发明实施例对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来,该软件产品存储在一个存储介质中,包括若干指令用以使得一台计算设备(可以是个人计算机,服务器,移动计算设备或者网络设备等)执行本发明各个实施例所述方法的全部或部分步骤。而前述的存储介质包括:U盘、移动硬盘、只读存储器(ROM,Read-Only Memory)、随机存取存储器(RAM,Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。If the functions described in the method of this embodiment are implemented in the form of software function units and sold or used as independent products, they can be stored in a computing device-readable storage medium. Based on this understanding, the part of the embodiment of the present invention that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, the software product is stored in a storage medium, and includes several instructions to make a A computing device (which may be a personal computer, a server, a mobile computing device or a network device, etc.) executes all or part of the steps of the methods described in various embodiments of the present invention. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program codes. .

本说明书中各个实施例采用递进的方式描述,每个实施例重点说明的都是与其它实施例的不同之处,各个实施例之间相同或相似部分互相参见即可。Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same or similar parts of each embodiment can be referred to each other.

对所公开的实施例的上述说明,使本领域专业技术人员能够实现或使用本发明。对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的,本文中所定义的一般原理可以在不脱离本发明的精神或范围的情况下,在其它实施例中实现。因此,本发明将不会被限制于本文所示的这些实施例,而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (4)

1.一种无功设备回路保护方法,其特征在于,包括:1. A reactive equipment circuit protection method, characterized in that, comprising: 采集无功分支回路的故障电流;Collect the fault current of the reactive branch circuit; 判断所述故障电流是否大于预设电流闭锁定值;judging whether the fault current is greater than a preset current locking value; 若大于所述预设电流闭锁定值,则跳开总回路断路器;If it is greater than the preset current locking lock value, trip the main circuit breaker; 若小于所述预设电流闭锁定值,则跳开所述无功分支回路的负荷开关。If it is less than the preset current locking value, the load switch of the reactive branch circuit is tripped. 2.如权利要求1所述的方法,其特征在于,在跳开总回路断路器的同时还包括:2. The method according to claim 1, further comprising: 启动主变分支断路器的失灵及解复压闭锁。Start the failure of the main transformer branch circuit breaker and decompression lockout. 3.如权利要求1所述的方法,其特征在于,在跳开所述无功分支回路的负荷开关的同时还包括:3. method as claimed in claim 1, is characterized in that, when jumping off the load switch of described reactive power branch circuit, also comprises: 启动分支母线失灵保护及解除复压闭锁。Start the branch bus failure protection and release the complex pressure lockout. 4.一种无功设备回路保护装置,其特征在于,包括:4. A reactive equipment circuit protection device, characterized in that it comprises: 采集单元,用于采集无功分支回路的故障电流;The collection unit is used to collect the fault current of the reactive branch circuit; 判断单元,用于判断所述故障电流是否大于预设电流闭锁定值;A judging unit, configured to judge whether the fault current is greater than a preset current blocking lock value; 第一处理单元,用于若大于所述预设电流闭锁定值,则跳开总回路断路器;The first processing unit is configured to trip the main circuit breaker if it is greater than the preset current blocking lock value; 第二处理单元,用于若小于所述预设电流闭锁定值,则跳开所述无功分支回路的负荷开关。The second processing unit is configured to jump off the load switch of the reactive branch circuit if it is less than the preset current blocking lock value.
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CN202940570U (en) * 2012-06-15 2013-05-15 沈阳华岩电力技术有限公司 Grounding protection controller for 10kV capacitor reactive compensation device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202940570U (en) * 2012-06-15 2013-05-15 沈阳华岩电力技术有限公司 Grounding protection controller for 10kV capacitor reactive compensation device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
田秋松等: "特高压110kV 并联电容器组投切问题的解决办法和新型投切开关的应用", 《河南电力》 *

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