CN104776824A - Monitoring method and monitoring device for radial displacement of GIL (gas insulated transmission line) - Google Patents
Monitoring method and monitoring device for radial displacement of GIL (gas insulated transmission line) Download PDFInfo
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- CN104776824A CN104776824A CN201410763237.5A CN201410763237A CN104776824A CN 104776824 A CN104776824 A CN 104776824A CN 201410763237 A CN201410763237 A CN 201410763237A CN 104776824 A CN104776824 A CN 104776824A
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- gil
- radial displacement
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- cylindrical shell
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
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- General Physics & Mathematics (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
Abstract
The invention discloses a monitoring method and a monitoring device for radial displacement of a GIL (gas insulated transmission line). The monitoring device comprises an angle measurement module fixedly mounted on a GIL barrel body and used for measuring an angle between the barrel body and a horizontal plane, wherein the signal output end of the angle measurement module is connected with the signal input end of a control module; the control module is used for converting an angle signal obtained by measurement into a radial displacement signal and outputting the radial displacement signal. The monitoring method comprises the following steps: through angle measurement, the angle is converted into actual deformation amount of a bus according to related calculation, and the deformation amount is monitored in real time through a display screen. The method and the device can be used for monitoring a radial deformation value of the bus in real time, thereby providing accurate data for analyzing a running condition of the GIL.
Description
Technical field
The invention belongs to high-tension switch gear, High-Voltage Electrical Appliances manufacture field, be mainly used in the radial deformation of monitoring closed power transmission line, be particularly useful in GIL, be specifically related to a kind of GIL radial displacement monitoring device and monitoring method.
Background technology
Due to the many merits that GIS has, GIS device manufacture and correlation technique develop rapidly, and gas-insulated transmission line (GIL) is also paid close attention to more and more widely.GIL because of its reliability high, transmission capacity is large, and electric energy loss is little, is widely used gradually.
Because gas-insulated transmission line is very long, multiple inflation unit is generally divided into during design, each inflation unit is made up of multiple manufacturing cell, and be equipped with telescopic joint (corrugated tube), in the ideal situation, generally need ensure that it can only move axially at normal operation period and because of stressed, radial displacement not occur when mounted.But the impacts such as environment temperature change, processing alignment error, settlement of foundation and earthquake are subject to due to GIL; often can there is axis and transversal displacement; in order to monitor the GIL deformation that bus causes by the various factors such as the temperature difference and installation affects; improve the reliability of GIL safe operation; need to record its axis and transversal displacement; but general axis is easily intuitively found out usually to displacement deformation; and radial displacement is not easy intuitively to find out, therefore mostly adopts at present and in position radial displacement monitoring device is installed.
At present, the radial displacement monitoring device that existing GIL comprises bus in GIS string is fairly simple, usually arranges a pointer perpendicular to ground, and then the scale corresponded on bus observes the radial deformation of bus.This device can observe that larger displacement is out of shape to a certain extent.But this method has certain limitation, first pointer itself is easily subject to the impact of extraneous factor and bends, thus the accuracy that impact is measured; In addition, this device can not carry out Real-Time Monitoring to the distortion of bus, and needs to monitor more power station, and measurement mechanism is also many, brings great workload to the staff patrolled and examined.
Summary of the invention
The object of this invention is to provide a kind of GIL radial displacement monitoring method, to ensure the accuracy that GIL radial displacement is measured, provide a kind of monitoring device using this monitoring device simultaneously.
In order to realize above object, the technical solution adopted in the present invention is: a kind of GIL radial displacement monitoring method, measures the angle of cylindrical shell and surface level, calculates the radial displacement of cylindrical shell according to this angle and barrel lenght.
The radial displacement that leg-of-mutton funtcional relationship calculates cylindrical shell is formed according to cylindrical shell, surface level and cylindrical shell radial displacement.
Measurement mechanism for measuring cylindrical shell and surface level angle is arranged at the upper horizontal position of joint flange between cylindrical shell and corrugated tube.
The radial-deformation that can be born by GIL divides safety, early warning and the numerical range corresponding to danger and on measurement mechanism, arranges corresponding running LED, judges the scope residing for radial displacement of the measurement point calculated, and lights corresponding pilot lamp.
Present invention also offers a kind of GIL radial displacement monitoring device, comprise and being fixedly mounted on GIL cylindrical shell, for measuring the Angle Measurement Module of cylindrical shell and surface level angle, the signal output part of described Angle Measurement Module is connected with the signal input part of control module, and described control module is used for being converted into radial displacement signal by measuring the angle signal obtained and exporting.
This device also comprises the radial deformation display screen that the angle for angles of display signal be connected with control module changes display screen and shows radial displacement signal.
This device also comprises and carries out for the numerical range residing for radial displacement signal the GIL running LED that indicates.
This device is encapsulated by a housing.
GIL radial displacement monitoring method of the present invention and monitoring device are by the measurement of angle, angle is changed into the practical distortion amount of bus according to relevant calculating, and by display screen Real-Time Monitoring, the method and device can the radial deformation numerical value of Real-Time Monitoring bus, provide data accurately for analysis GIL operation conditions.
In addition, this device has the running LED of GIL distortion, and patrol officer can judge the deformation of GIL according to the color of pilot lamp, can reduce the workload of patrol officer significantly.
This monitoring device is encapsulated in a housing, does not affect by extraneous factor, easy for installation, good looking appearance.
Accompanying drawing explanation
Fig. 1 is the desirable installation and operation schematic diagram of GIL bus;
Fig. 2 is that GIL bus actual installation runs schematic diagram;
Fig. 3 is GIL radial displacement monitoring device mounting structure schematic diagram;
Fig. 4 is GIL radial displacement monitoring device surface structure schematic diagram;
Fig. 5 is GIL radial displacement monitoring device principle assumption diagram;
Fig. 6 is GIL radial displacement monitoring device signal transmission process flow diagram.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, the present invention is described further.
Be illustrated in figure 1 the perfect condition in bus installation and operation, namely do not produce radial displacement, but because alignment error, equipment processing and the existence of foozle and cylindrical shell are by the impact of some row external force in reality, all can produce corresponding radial displacement.
Be illustrated in figure 2 issuable deformation in GIL operational process, corresponding will produce angle and radial displacement, GIL radial displacement monitoring method of the present invention is exactly the angle beta by measuring cylindrical shell and surface level, then calculates the radial displacement a of cylindrical shell according to this angle and barrel lenght L.
As shown in Figure 3, measurement mechanism 1 for measuring cylindrical shell 3 and surface level angle in the present embodiment is arranged at the upper horizontal position of joint flange 7 between cylindrical shell and corrugated tube 2, during calculating, the radial displacement that leg-of-mutton funtcional relationship calculates cylindrical shell is formed according to cylindrical shell, surface level and cylindrical shell radial displacement, namely a=L*tg β, L are the horizontal range between the fixed support 4 of measurement mechanism mounting points and GIL.
In addition, the present invention divides the numerical range corresponding to safety, early warning and danger by the radial-deformation that GIL can bear by computational analysis, and associated by the pilot lamp of numerical range to the corresponding running status that measurement mechanism is arranged, then judge that the scope residing for radial displacement of the measurement point calculated by angle value lights corresponding pilot lamp.
As shown in Fig. 4 ~ Fig. 5, present invention also offers a kind of GIL radial displacement monitoring device, as seen from the figure, this device comprises and being fixedly mounted on GIL cylindrical shell, for measuring the Angle Measurement Module of cylindrical shell and surface level angle, the signal output part of Angle Measurement Module is connected with the signal input part of control module, and control module is used for being converted into radial displacement signal by measuring the angle signal obtained and exporting.
In addition, for ease of observing and using, this device also comprises the radial deformation display screen 92 that the angle for angles of display signal be connected with control module changes display screen 91 and shows radial displacement signal, and the GIL running LED that indicates is carried out for the numerical range residing for radial displacement signal, comprise normal relay indicating light 81, early warning pilot lamp 82 and risk indicating lamp 83; Also comprise the action buttons such as reset 10.
This device is packaged together by more than a housing corresponding functional module, is arranged on the fixed position of GIL, extraneous factor can being avoided monitoring the impact caused, being provided with the Real-Time Monitoring of data and the double insurance effect of signal designation simultaneously.
As shown in Figure 6, principle of work and the process of monitoring device of the present invention are as follows: GIL displacement monitor is arranged on GIL fixed position, after calibration display screen 91,92 show respectively bus and horizontal angle and bus diametrically deflection, now normally relay indicating light 81 is bright.Along with impacts such as extraneous temperature rise and settlement of foundation, its radial-deformation will change, angle signal is delivered to angle change display screen 91 and shows by Angle Measurement Module, by writing corresponding program, the data of display screen 2 are changed into actual GIL radial deformation data by control module 3, its numerical value will show in real time at display screen 92.Simultaneously arrange control module 3 according to the vertical scope of radial deformation of the safety of setting, early warning and danger, if GIL radial-deformation increases to early warning range in operational process, then normal relay indicating light 81 goes out, and early-warning lamp 82 is bright; When there is serious radial deformation, risk indicating lamp 83 is bright, and GIL distortion now, beyond the safe radial deformation scope of the original design of GIL, takes appropriate measures according to actual conditions, thus ensures that GIL is safe and reliable to operation.
Above embodiment only understands core concept of the present invention for helping; the present invention can not be limited with this; for those skilled in the art; every according to thought of the present invention; the present invention is modified or equivalent replacement; any change done in specific embodiments and applications, all should be included within protection scope of the present invention.
Claims (8)
1. a GIL radial displacement monitoring method, is characterized in that: the angle measuring cylindrical shell and surface level, calculates the radial displacement of cylindrical shell according to this angle and barrel lenght.
2. GIL radial displacement monitoring method according to claim 1, is characterized in that: form according to cylindrical shell, surface level and cylindrical shell radial displacement the radial displacement that leg-of-mutton funtcional relationship calculates cylindrical shell.
3. GIL radial displacement monitoring method according to claim 1 and 2, is characterized in that: the measurement mechanism for measuring cylindrical shell and surface level angle is arranged at the upper horizontal position of joint flange between cylindrical shell and corrugated tube.
4. GIL radial displacement monitoring method according to claim 3, it is characterized in that: the radial-deformation that can be born by GIL divides safety, early warning and the numerical range corresponding to danger and on measurement mechanism, arranges corresponding running LED, judge the scope residing for radial displacement of the measurement point calculated, and light corresponding pilot lamp.
5. a GIL radial displacement monitoring device, it is characterized in that: comprise and being fixedly mounted on GIL cylindrical shell, for measuring the Angle Measurement Module of cylindrical shell and surface level angle, the signal output part of described Angle Measurement Module is connected with the signal input part of control module, and described control module is used for being converted into radial displacement signal by measuring the angle signal obtained and exporting.
6. GIL radial displacement monitoring device according to claim 5, is characterized in that: this device also comprises the radial deformation display screen that the angle for angles of display signal be connected with control module changes display screen and shows radial displacement signal.
7. GIL radial displacement monitoring device according to claim 6, is characterized in that: this device also comprises and carries out for the numerical range residing for radial displacement signal the GIL running LED that indicates.
8. GIL radial displacement monitoring device according to claim 5, is characterized in that: this device is encapsulated by a housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410763237.5A CN104776824A (en) | 2014-12-11 | 2014-12-11 | Monitoring method and monitoring device for radial displacement of GIL (gas insulated transmission line) |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410763237.5A CN104776824A (en) | 2014-12-11 | 2014-12-11 | Monitoring method and monitoring device for radial displacement of GIL (gas insulated transmission line) |
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| CN104776824A true CN104776824A (en) | 2015-07-15 |
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| CN201410763237.5A Pending CN104776824A (en) | 2014-12-11 | 2014-12-11 | Monitoring method and monitoring device for radial displacement of GIL (gas insulated transmission line) |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105403157A (en) * | 2015-12-03 | 2016-03-16 | 国家电网公司 | Corrugated pipe assembly |
| CN107394659A (en) * | 2017-07-13 | 2017-11-24 | 河南平高电气股份有限公司 | Cubicle Gas-Insulated Switchgear cartridge module and its cylinder adpting flange |
| CN109163689A (en) * | 2018-09-04 | 2019-01-08 | 国网青海省电力公司检修公司 | A kind of bellows method for evaluating state and device |
| CN115164819A (en) * | 2022-07-25 | 2022-10-11 | 中铁二局集团建筑有限公司 | Deformation detection method and system for underground pipeline |
| CN115603245A (en) * | 2022-12-12 | 2023-01-13 | 江苏安靠智能输电工程科技股份有限公司（Cn） | Intelligent bellows |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105403157A (en) * | 2015-12-03 | 2016-03-16 | 国家电网公司 | Corrugated pipe assembly |
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| CN109163689A (en) * | 2018-09-04 | 2019-01-08 | 国网青海省电力公司检修公司 | A kind of bellows method for evaluating state and device |
| CN115164819A (en) * | 2022-07-25 | 2022-10-11 | 中铁二局集团建筑有限公司 | Deformation detection method and system for underground pipeline |
| CN115164819B (en) * | 2022-07-25 | 2023-10-27 | 四川建力源工程技术咨询有限公司 | Deformation detection method and system for underground pipeline |
| CN115603245A (en) * | 2022-12-12 | 2023-01-13 | 江苏安靠智能输电工程科技股份有限公司（Cn） | Intelligent bellows |
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Application publication date: 20150715 |