CN85107983A - 探测气体绝缘母线内部故障位置的装置 - Google Patents
探测气体绝缘母线内部故障位置的装置 Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/083—Locating faults in cables, transmission lines, or networks according to type of conductors in cables, e.g. underground
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Abstract
用于探测气体绝缘母线(1)内部故障位置的装置,其组成包括:沿着管形外套轴向每一个预定间隔安装有电极(30),这些电极(30)用于探测在每一间隔内导体(3)的电压变化从而可以探测到故障位置。
Description
本发明是关于探测气体绝缘母线内部故障位置的装置。
图4为一个典型的配有一般故障探测装置的气体绝缘开关示意图,该探测装置由一组电流互感器组成。当母线1中发生内部故障时,电流互感器CT探测到异常电流并使得过流继电器OC动作。过流继电器OC又带动所有的电路断路器CB,CB,……进行断路操作,从而切断来自与线5~9连接的系统的电流。因此,对于系统5~9及母线1进行了过流保护。
对于内部的故障需要进行内部监测并恢复正常工作。进行维修时需要拆卸母线装置。母线由固定在管形外套2内的导体3组成,在管腔4内充满了绝缘气体。每个管形外套2由法兰盘20与相邻的管形外套2相连。
对于普通的故障探测器,虽然可以探测到故障的发生,但是不能识别故障位置,因为必须逐段拆卸管形外套2直至发现故障位置,所以气体绝缘开关装置的维修工作很耗费时间。此类故障探测系统只能用于探测故障,并且对于故障前兆如发生电晕放电等现象不能报警。
本发明的主要目的是提供一个探测气体绝缘母线内部故障位置的装置。
本发明探测内部故障位置的装置包括:
在气体绝缘母线的管形外套内的电极。此电极沿轴向与相邻电极之间有一适宜的间隔。
用于测量电极电压的测量仪器及对这些仪器的输出进行比较并识别故障位置的处理单元。
下面是对图形的简要介绍。
图1为根据本发明探测气体绝缘母线内部故障位置装置的优选实体截面图。
图2为图1所示电极的局部透视图。
图3(a)为具有环形电极的另一种装置的前视截面图。
图3(b)为沿图3(a)B-B方向的侧视截面图。
图4为一个典型的普通故障探测系统示意图。
图5为一个典型的普通气体绝缘母线的局部剖视图。
下面是关于优选装置的描述。
图1为根据本发明而制作的探测气体绝缘母线内部故障位置装置的示意图。
母线1内有导体3,它穿过管形外套2,在管形外套内充满了绝缘气体4。每一段管形外套2由法兰盘20,20与相邻的管形外套连结。导体3由绝缘隔离架40支撑,后者把母线1分隔成几个充气部位。在每一段充气部位内都有电极30。图1所示仅为母线1的一个局部,略去了其它具有电极30的相似部分。
在每一段充气部位内都有电极30,它们与测量仪表14连接以便测量电压。如图2所示,电极30呈盘状。电极30由绝缘支架32支撑。电极30通过导线38与导体36相连,其上施加有电压,该电压正比于导体3的电压。环绕导体36的是绝缘密封塞34以保持管形外套2内的气体密封。
参考图1,当母线1内发生飞弧跳火时,装置按如下描述进行工作:
跳火导致导体3产生零电压。但在同一时刻导体3的全部长度并没有转变成零电压。在跳火点导体3变为零电压,由此位置零电压波向两个方向传播。在每一段充气部位内的电极30相对于导体3有预定的一径向间隙,其上施加有正比于每一部位内导体3上的电压的电压。因此,测量仪器14探测到跳火位置邻近点向远离点传播的瞬态电压。处理单元16接收到测量仪器14的输出数据并对测量电压信号进行处理后,可以判定相应于电压瞬变点的跳火位置。
在管形外套内,当母线1发生电晕放电时,导体3的电压振荡由电晕放电点向外传播。固此处理单元16也可以指示电车放电位置,因为导体3的电压振荡由电晕位置邻近点向外传播。
在本发明的另一种装置中,电极30可以作成园环形,如图3(a)正视截面图所示。图3(b)是沿图3(a)B-B方向的侧视截面图。电极30环绕导体3,并且在管形外套2上由绝缘支架32支撑。
如上所述,根据本发明制作的探测故障位置的装置在发生故障的时刻可以自动有效地探测故障位置。因此,可以很快进行故障维修,因为维修时不需要花费时间去判别故障位置。
尤其是,使用该装置,通过探测电晕放电可以预先防止故障的发生。
与通常的装置相比,这两个特点在技术上有很大的优越性,它可以对故障位置自动进行电探测而不需拆卸管形外套;同样,可以随时对于潜在的内部故障进行探测,这些以前都是做不到的。
Claims (5)
1、探测气体绝缘母线内部故障位置的装置的特征是它包括:
在气体绝缘母线(1)的管形外套(2)内安装有电极(30),并且沿所述的管形外套(2)的轴向,相邻电极(30)之间有一适宜的间隔,
用于测量所述电极(30)的电压的测量仪器(14),
对于所述测量仪器(14)的输出进行比较来判定故障位置的处理单元(16)。
2、根据权项1的气体绝缘母线内部故障位置探测装置,在其每一个充气单元内都有一个所述的电极(30)。
3、根据权项1的气体绝缘母线内部故障位置探测装置,所述的电极(30)是园盘形的。
4、根据权项1的气体绝缘母线内部故障位置探测装置,所述的电极(30)是环形的,并且它们的配置与所述管形外套(2)的内表面是同轴的。
5、根据权项1的气体绝缘母线内部故障位置探测装置,所述处理单元按预定的延迟时间处理电极(30)的输出并且发现故障位置。
在电压测量电路中有一个信号延迟装置,它用于去比较在所述处理单元中传播时间的差别。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP59230840A JPS61108976A (ja) | 1984-11-01 | 1984-11-01 | ガス絶縁母線の故障位置検出装置 |
JP59-230840 | 1984-11-01 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN85107983A true CN85107983A (zh) | 1986-06-10 |
CN1011083B CN1011083B (zh) | 1991-01-02 |
Family
ID=16914104
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN85107983A Expired CN1011083B (zh) | 1984-11-01 | 1985-10-31 | 探测气体绝缘母线内部故障位置的装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US4882682A (zh) |
JP (1) | JPS61108976A (zh) |
CN (1) | CN1011083B (zh) |
CH (1) | CH670519A5 (zh) |
DE (1) | DE3535544A1 (zh) |
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- 1984-11-01 JP JP59230840A patent/JPS61108976A/ja active Pending
-
1985
- 1985-10-04 DE DE19853535544 patent/DE3535544A1/de not_active Ceased
- 1985-10-11 CH CH4396/85A patent/CH670519A5/de not_active IP Right Cessation
- 1985-10-31 CN CN85107983A patent/CN1011083B/zh not_active Expired
-
1988
- 1988-05-04 US US07/190,095 patent/US4882682A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CH670519A5 (zh) | 1989-06-15 |
DE3535544A1 (de) | 1986-05-15 |
JPS61108976A (ja) | 1986-05-27 |
US4882682A (en) | 1989-11-21 |
CN1011083B (zh) | 1991-01-02 |
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