CN102661771B - A measuring device and measuring method for quantifying the oil level of a high-voltage current transformer - Google Patents
A measuring device and measuring method for quantifying the oil level of a high-voltage current transformer Download PDFInfo
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- CN102661771B CN102661771B CN201210145988.1A CN201210145988A CN102661771B CN 102661771 B CN102661771 B CN 102661771B CN 201210145988 A CN201210145988 A CN 201210145988A CN 102661771 B CN102661771 B CN 102661771B
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Abstract
本发明公开了一种量化高压电流互感器油位的测量装置,包括一副三脚架,三脚架顶部的水平面上安装一游标角度仪,游标角度仪上安装一激光瞄准器。本发明还提供了一种测量方法,首先,调节三脚架确保游标角度仪水平放置;其次,当调整并确定测量位置后,利用激光瞄准器精确对准高压电流互感器观测窗上、下限以及油位的刻度线,同时用游标角度仪测量得出对应的角度,其中油位观察窗上限A点、下限C点和油位刻度线B点对应的角度分别为γ、α、β;最后,通过计算公式
得出油位刻度相对整个观察窗的比例数值。本发明填补了量化高压电流互感器油位测量方法的空白,本发明提供的测量装置具有组装携带方便、操作简单、精确度高的特点。The invention discloses a measuring device for quantifying the oil level of a high-voltage current transformer. The present invention also provides a measurement method. First, adjust the tripod to ensure that the vernier angle meter is placed horizontally; secondly, after adjusting and determining the measurement position, use the laser sight to precisely align the upper and lower limits of the observation window of the high-voltage current transformer and the oil level. At the same time, use a vernier angle meter to measure the corresponding angle, where the angles corresponding to the upper limit point A, the lower limit point C of the oil level observation window and the point B of the oil level scale line are γ, α, and β respectively; finally, by calculating formula
Get the proportional value of the oil level scale relative to the entire observation window. The invention fills up the gap in the method for measuring the oil level of the quantified high-voltage current transformer, and the measuring device provided by the invention has the characteristics of convenient assembly and portability, simple operation and high precision.Description
技术领域 technical field
本发明涉及测量高压电流互感器油位的测量装置以及相应的测量方法。The invention relates to a measuring device for measuring the oil level of a high-voltage current transformer and a corresponding measuring method.
背景技术 Background technique
由于结构紧凑、动热稳定能力强等优点,倒置式充油电流互感器被广泛应用在35kV及以上电压等级的电网中。作为判断互感器设备是否正常的一项重要依据,观察互感器的油位,分析油位变化情况,成为电力工人定期巡视检查互感器设备的重要内容。然而由于倒置式电流互感器的油位观察窗均位于互感器的顶端,距地面较高,且观察窗外仅有40℃、-20℃这样简单的几个刻度线,使得巡视检查人员无法将油位量化为一个具体数值,因此对油位变化是否合理、正常只能下一个含糊的定论。这对于全面掌握互感器设备的运行工况十分不利。尤其当电流互感器处于渗油缺陷情况下,巡视检查人员很难通过历次巡视的结果来分析判断出渗油缺陷发展的趋势,因此急需要一种能够量化倒置式电流互感器油位的测量方法,并提出相应的测量装置。Due to the advantages of compact structure and strong dynamic and thermal stability, inverted oil-filled current transformers are widely used in power grids with voltage levels of 35kV and above. As an important basis for judging whether the transformer equipment is normal, observing the oil level of the transformer and analyzing the change of the oil level has become an important content for electric workers to regularly inspect the transformer equipment. However, since the oil level observation windows of the inverted current transformers are all located on the top of the transformer, higher than the ground, and there are only a few simple scale lines such as 40°C and -20°C outside the observation windows, it is impossible for inspection personnel to remove the oil level. The position is quantified as a specific value, so whether the oil level change is reasonable or normal can only be a vague conclusion. This is very unfavorable for a comprehensive grasp of the operating conditions of the transformer equipment. Especially when the current transformer is in the case of oil leakage defects, it is difficult for inspection personnel to analyze and judge the development trend of oil leakage defects through the results of previous inspections. Therefore, a measurement method that can quantify the oil level of inverted current transformers is urgently needed , and put forward the corresponding measuring device.
发明内容 Contents of the invention
本发明所要解决的技术问题就是提供一种可以测量高压电流互感器油位的测量装置以及相应的测量方法,通过本发明的使用,巡视检查人员可将倒置式电流互感器的油位测算为一个确定的百分数,从而解决了互感器油位无法量化的问题,通过分析历次记录的油位数值,综合环境温度、负荷情况等因素,巡视检查人员可以较为准确地判断出互感器设备运行是否正常。The technical problem to be solved by the present invention is to provide a measuring device capable of measuring the oil level of a high-voltage current transformer and a corresponding measuring method. Through the use of the present invention, inspection personnel can measure and calculate the oil level of an inverted current transformer as a The determined percentage solves the problem that the oil level of the transformer cannot be quantified. By analyzing the oil level values recorded in previous times, and considering factors such as ambient temperature and load conditions, inspection personnel can more accurately judge whether the transformer equipment is operating normally.
为解决上述技术问题,本发明采用如下技术方案:一种量化高压电流互感器油位的测量装置,其特征在于:包括一副三脚架,所述三脚架顶部的水平面上安装一游标角度仪,所述游标角度仪上安装一激光瞄准器。In order to solve the above-mentioned technical problems, the present invention adopts the following technical solutions: a measuring device for quantifying the oil level of a high-voltage current transformer, which is characterized in that it includes a pair of tripods, and a vernier angle meter is installed on the horizontal surface of the top of the tripods. A laser sight is installed on the vernier angle meter.
作为优选,所述三角架包括三只支脚,其中两只支脚高度可调,所述三脚架顶部设有一水平的支撑面,所述水平面平行设置于支撑面上方,其中支撑面与水平面间设有三个呈等边三角形分布的水平调节螺丝,通过调整这三个水平调节螺丝确保水平面的水平。Preferably, the tripod includes three legs, two of which are adjustable in height, and the top of the tripod is provided with a horizontal support surface, and the horizontal plane is arranged above the support surface in parallel, wherein there are three supports between the support surface and the horizontal plane. The horizontal adjustment screws distributed in an equilateral triangle can ensure the level of the horizontal plane by adjusting these three horizontal adjustment screws.
作为优选,所述水平面上设置两个相互正交的水平泡,通过观察水平泡中气泡的位置来判断水平面是否水平。Preferably, two mutually orthogonal horizontal bubbles are arranged on the horizontal plane, and whether the horizontal plane is horizontal can be judged by observing the position of the bubbles in the horizontal bubbles.
作为优选,所述游标角度仪包括T型支撑件、夹子、扇形拖板、主尺、游标尺、基尺及扇形齿,T型支撑件底部与三脚架水平面固定,扇形拖板通过连接螺钉与夹子相连;夹子安装于T型支撑件一侧臂上,主尺背部安装扇形齿;主尺外侧端设置游标尺,扇形拖板上设置扇形齿调节螺丝,扇形齿与扇形齿调节螺丝配合用于调节测量角度,主尺的前端设置基尺及激光瞄准器。As preferably, the vernier angle meter includes a T-shaped support, a clip, a fan-shaped carriage, a main ruler, a vernier ruler, a base ruler and a fan-shaped tooth, the bottom of the T-shaped support is fixed to the horizontal plane of the tripod, and the fan-shaped carriage is connected to the clamp by a screw Connected; the clip is installed on one side arm of the T-shaped support, and the fan-shaped teeth are installed on the back of the main ruler; the vernier ruler is set on the outer end of the main ruler, and the fan-shaped tooth adjustment screw is set on the fan-shaped drag plate, and the fan-shaped teeth and the fan-shaped tooth adjustment screw are used for adjustment. To measure the angle, the front end of the main ruler is equipped with a base ruler and a laser sight.
作为优选,所述三脚架的水平面中心设置一方型固定件,所述方型固定件采用方型的金属空心管,方型固定件管孔内径大小与游标角度仪T型支撑件底部匹配使得T型支撑件底部插入管孔实现固定。As a preference, a square fixture is provided at the center of the horizontal plane of the tripod, the square fixture adopts a square metal hollow tube, and the inner diameter of the tube hole of the square fixture matches the bottom of the T-shaped support of the vernier angle meter so that the T-shaped The bottom of the support member is inserted into the pipe hole for fixing.
作为优选,所述激光瞄准器底部设置两个固定螺孔与游标角度仪上的固定螺钉配合使用将激光瞄准器固定在游标角度仪主尺前端,所述激光瞄准器上设有调节激光发射口发射出的激光束方向的激光束调节螺丝,通过调节激光束调节螺丝确保激光束与游标角度仪的基尺在同一水平线上。As a preference, two fixing screw holes are provided at the bottom of the laser sight to cooperate with the fixing screws on the vernier angle meter to fix the laser sight on the front end of the main ruler of the vernier angle meter, and the laser sight is provided with an adjustment laser emission port The laser beam adjustment screw for the direction of the emitted laser beam, by adjusting the laser beam adjustment screw, ensure that the laser beam and the base ruler of the vernier angle meter are on the same horizontal line.
本发明还提供了一种量化高压电流互感器油位的测量方法,其特征在于:首先,调节三脚架确保游标角度仪水平放置;其次,当调整并确定测量位置后,利用激光瞄准器精确对准高压电流互感器观测窗上、下限以及油位的刻度线,同时用游标角度仪测量得出对应的角度,其中油位观察窗上限A点、下限C点和油位刻度线B点对应的角度分别为γ、α、β;最后,通过计算公式得出油位刻度相对整个观察窗的比例数值。The present invention also provides a method for quantifying the oil level of a high-voltage current transformer, which is characterized in that: firstly, adjust the tripod to ensure that the vernier angle meter is placed horizontally; secondly, after adjusting and determining the measurement position, use a laser sight to accurately align The upper and lower limits of the high-voltage current transformer observation window and the scale line of the oil level, and the corresponding angle is measured by a vernier angle meter, among which the angle corresponding to the upper limit point A, the lower limit point C of the oil level observation window and the point B of the oil level scale line are γ, α, β respectively; finally, through the calculation formula Get the proportional value of the oil level scale relative to the entire observation window.
本发明填补了量化高压电流互感器油位测量方法的空白,本发明提供的测量装置具有组装携带方便、操作简单、精确度高的特点。The invention fills up the gap in the method for measuring the oil level of the quantified high-voltage current transformer, and the measuring device provided by the invention has the characteristics of convenient assembly and portability, simple operation and high precision.
附图说明 Description of drawings
下面结合附图和具体实施方式对本发明作进一步描述:The present invention will be further described below in conjunction with accompanying drawing and specific embodiment:
图1为测量方法示意图;Figure 1 is a schematic diagram of the measurement method;
图2为测量仪器结构示意图;Fig. 2 is the schematic diagram of measuring instrument structure;
图3为三脚架主视图;Figure 3 is a front view of the tripod;
图4为三脚架侧视图;Figure 4 is a side view of the tripod;
图5为三脚架俯视图;Figure 5 is a top view of the tripod;
图6为游标角度仪主视图;Fig. 6 is the front view of the vernier angle meter;
图7为游标角度仪后视图;Fig. 7 is a rear view of the vernier angle meter;
图8为激光瞄准器主视图;Figure 8 is a front view of the laser sight;
图9为激光瞄准器左视图;Figure 9 is a left view of the laser sight;
图10为激光瞄准器右视图;Figure 10 is a right view of the laser sight;
图11为激光瞄准器俯视图。Figure 11 is a top view of the laser sight.
具体实施方式 Detailed ways
如图2所示,本发明提供的量化高压电流互感器油位的测量装置主要由测绘专用的三脚架1、游标角度仪8、激光瞄准器9组成,方便装配。As shown in Fig. 2, the measuring device for quantifying the oil level of high-voltage current transformers provided by the present invention is mainly composed of a
如图2至图5所示,其中三脚架部分主要由测绘专用三脚架1、支撑面2、水平调节螺丝3、水平面6、水平泡(分别为横向水平泡4及纵向水平泡7)、方型固定件5组成,测绘专用三脚架其中两只支脚可调,能适用于大多数的测量环境(不同土质、坡度);支撑面2上设置三个水平调节螺丝3,通过调整这三个水平调节螺丝确保水平面6水平;水平面6上设置两个相互正交的水平泡,通过观察两水平泡中气泡的位置,判断测量仪器水平面6是否水平;在水平面6的中心设置方型固定件5,起固定游标角度仪的作用;方型固定件5采用方型的金属空心管,管孔内径大小与游标角度仪的T型支撑件10匹配,使得T型支撑件10插入管孔即可固定使用。As shown in Figure 2 to Figure 5, the tripod part is mainly composed of a special tripod for surveying and
游标角度仪8如图6和7所示,主要由T型支撑件10、夹子11、主尺13、游标尺12、制动块17、基尺15、扇形拖板20、扇形齿调节螺丝24等部件组成,扇形拖板20与主尺13、游标尺12、基尺15作为本游标角度仪的主体,扇形拖板20通过连接螺钉18与夹子11相连;夹子11内插有T型支撑件10,通过夹子调节螺丝19固定T型支撑件10与游标角度仪主体的位置;扇形拖板20上设置制动块17,通过调节制动螺丝14确保得到测量结果后游标角度仪不会再变动;主尺最小刻度为1度,游标尺12最小刻度为2分;主尺13背部安装扇形齿22,通过三颗螺钉23固定在主尺上;扇形齿22与扇形齿调节螺丝24配合,用于调节测量角度;主尺13的端部设置激光瞄准器9,激光瞄准器9通过两个固定螺钉16进行固定;激光瞄准器9射出的激光束与基尺15在同一条水平线上。The
激光瞄准器9如图7至图11所示,底部设置两个固定螺孔26,与游标角度仪上的固定螺钉16配合使用,将激光瞄准器9固定在游标角度仪8上;激光束调节螺丝28可以调节激光发射口27射出的激光束的方向,确保激光束与游标角度仪基尺15在同一水平线上。As shown in Figures 7 to 11, the
结合图1说明采用上述量化高压电流互感器油位的测量装置的测量方法:利用三脚架和其上配置的水平调节螺丝,可以确保测量仪器水平;当确定测量位置后,利用激光瞄准器精确对准观测窗上、下限以及油位的刻度线,同时用游标角度仪测量得出对应的角度,最终通过计算公式得出油位刻度相对整个观察窗的比例数值。In conjunction with Figure 1, the measurement method using the above-mentioned measuring device for quantifying the oil level of the high-voltage current transformer is described: the level of the measuring instrument can be ensured by using the tripod and the horizontal adjustment screw arranged on it; Observe the upper and lower limits of the window and the scale line of the oil level, and measure the corresponding angle with a vernier angle meter, and finally obtain the ratio of the oil level scale to the entire observation window through the calculation formula.
选定测量位置O点后,使用本发明提供的测量仪器可以精确测出油位观察窗上限A点、下限C点和油位刻度线B点对应的角度γ、α、β,从而得出当前互感器油位相对于观察窗的数值, After the measurement position O is selected, the angles γ, α, and β corresponding to the upper limit A point, the lower limit C point and the oil level scale line B point of the oil level observation window can be accurately measured by using the measuring instrument provided by the present invention, thereby obtaining the current The value of transformer oil level relative to the observation window,
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