CN207198290U - A kind of turn-to-turn insulation breakdown voltage temperature characterisitic experimental provision - Google Patents
A kind of turn-to-turn insulation breakdown voltage temperature characterisitic experimental provision Download PDFInfo
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- 230000015556 catabolic process Effects 0.000 title claims abstract description 20
- 238000009413 insulation Methods 0.000 title claims abstract description 14
- 238000001514 detection method Methods 0.000 claims description 7
- 239000003990 capacitor Substances 0.000 claims description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 5
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- 230000010355 oscillation Effects 0.000 abstract description 10
- 238000002474 experimental method Methods 0.000 abstract description 8
- 238000012360 testing method Methods 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 3
- 230000035939 shock Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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Abstract
本实用新型属于电抗器匝间绝缘技术领域，尤其涉及一种匝间绝缘击穿电压温度特性实验装置。包括：烘箱，所述烘箱的内部设置有待检测式样，式样的式样高压端与高压连接杆的底部连接，高压连接杆穿过烘箱后与实验电路的电路高压端连接，所述的高压连接杆的外部设置有绝缘套管，所述的式样的式样低压端通过导线与实验电路的电路低压端连接，所述烘箱与控制台连接，由此结构可以在实验电路对式样两端施加电压进行实验的同时，通过烘箱改变式样的温度，进而解决了现有的脉冲震荡击穿实验无法在不同温度下进行以及无法得到不同温度下的实验结果的问题。
The utility model belongs to the technical field of inter-turn insulation of reactors, in particular to an experimental device for breakdown voltage temperature characteristics of inter-turn insulation. Including: an oven, the interior of the oven is provided with a pattern to be tested, the high-voltage end of the pattern is connected to the bottom of the high-voltage connecting rod, and the high-voltage connecting rod is connected to the high-voltage end of the circuit of the experimental circuit after passing through the oven, and the high-voltage connecting rod The outside is provided with an insulating sleeve, and the low-voltage end of the pattern is connected to the low-voltage end of the experimental circuit through a wire, and the oven is connected to the console, so that the structure can apply voltage to both ends of the pattern in the experimental circuit for experiments At the same time, the temperature of the pattern is changed through the oven, thereby solving the problem that the existing pulse oscillation breakdown experiment cannot be carried out at different temperatures and the experimental results at different temperatures cannot be obtained.
Description
技术领域technical field
本实用新型属于电抗器匝间绝缘技术领域，尤其涉及一种匝间绝缘击穿电压温度特性实验装置。The utility model belongs to the technical field of inter-turn insulation of reactors, in particular to an experimental device for breakdown voltage temperature characteristics of inter-turn insulation.
背景技术Background technique
作为无功补偿装置重要组成部分的干式空心并联电抗器在电力工业以及电力系统用户中得以广泛使用。但是近两年电抗器事故频发，多数是由线圈绝缘击穿或温度分布不均引起，因此对电抗器的匝间绝缘击穿电压与温度的关系进行研究，对电力系统现阶段的问题以及将来的发展起到了至关重要的作用。目前对电抗器匝间绝缘脉冲振荡击穿试验是利用单独的脉冲振荡发生器对试样进行击穿，无法实现在不同温度下对试样进行击穿试验，不能得到温度与击穿电压关系从而有效避免电抗器实际运行中的事故。As an important part of reactive power compensation device, dry-type air-core shunt reactor is widely used in power industry and power system users. However, reactor accidents have occurred frequently in the past two years, most of which are caused by coil insulation breakdown or uneven temperature distribution. Future development plays a crucial role. At present, the pulse oscillation breakdown test of the inter-turn insulation of the reactor uses a separate pulse oscillation generator to break down the sample, which cannot realize the breakdown test of the sample at different temperatures, and the relationship between temperature and breakdown voltage cannot be obtained. Effectively avoid accidents in the actual operation of the reactor.
实用新型内容Utility model content
在下文中给出了关于本实用新型的简要概述，以便提供关于本实用新型的某些方面的基本理解。应当理解为这个概述并不是关于本实用新型的穷举性概述。它并不是意图确定本实用新型的关键或重要部分，也不是意图限定本实用新型的范围。其目的仅仅是以简化的形式给出某些概念，以作为稍后论述的更详细描述的前序。A brief overview of the present invention is given below in order to provide a basic understanding of certain aspects of the present invention. It should be understood that this summary is not an exhaustive summary of the invention. It is not intended to identify the key or important part of the present invention, nor is it intended to limit the scope of the present invention. Its purpose is merely to present some concepts in a simplified form as a prelude to the more detailed description that is discussed later.
鉴于此，本实用新型提供了一种结构简单、设计合理，可通过烘箱控制式样温度，由脉冲震荡发生器对式样施加电压，以至少解决现有脉冲震荡击穿实验无法在不同温度下进行的问题。In view of this, the utility model provides a simple structure, reasonable design, the temperature of the sample can be controlled by the oven, and the voltage is applied to the sample by the pulse oscillation generator, so as to at least solve the problem that the existing pulse oscillation breakdown experiment cannot be carried out at different temperatures. question.
本实用新型的技术方案：Technical scheme of the utility model:
一种匝间绝缘击穿电压温度特性实验装置，包括：烘箱，所述烘箱的内部设置有待检测式样，式样的式样高压端与高压连接杆的底部连接，高压连接杆穿过烘箱后与实验电路的电路高压端连接，所述的高压连接杆的外部设置有绝缘套管，所述的式样的式样低压端通过导线与实验电路的电路低压端连接，所述烘箱与控制台连接。An experimental device for inter-turn insulation breakdown voltage temperature characteristics, comprising: an oven, the interior of the oven is provided with a pattern to be tested, the high-voltage end of the pattern is connected to the bottom of the high-voltage connecting rod, and the high-voltage connecting rod is connected to the experimental circuit after passing through the oven. The high-voltage end of the circuit is connected, the outer part of the high-voltage connecting rod is provided with an insulating sleeve, the low-voltage end of the pattern is connected to the low-voltage end of the experimental circuit through a wire, and the oven is connected to the console.
进一步地，所述的实验电路包括可调变压器T1，可调变压器T1的输出端与升压变压器T2连接，升压变压器T2输出的高压端依次串接有高压保护电阻R1、硅堆D、频率可控球隙放电开关G1和保护电阻R后连接电路高压端，升压变压器T2输出的低压端连接电路低压端，所述硅堆D和频率可控球隙放电开关G1之间与升压变压器T2输出的低压端连接有脉冲电容器C，脉冲电容器C的两端并联有电压检测电路，电压检测电路包括串联的电阻R2和电流表，所述频率可控球隙放电开关G1和保护电阻R之间与升压变压器T2输出的低压端连接有电感器L，电感器L的两端并联有接地保护开关K1。Further, the experimental circuit includes an adjustable transformer T1, the output terminal of the adjustable transformer T1 is connected to the step-up transformer T2, and the high-voltage end output by the step-up transformer T2 is sequentially connected in series with a high-voltage protection resistor R1, a silicon stack D, a frequency The controllable ball-gap discharge switch G1 and the protective resistor R are connected to the high-voltage end of the circuit, and the low-voltage end output by the step-up transformer T2 is connected to the low-voltage end of the circuit. The low-voltage end of T2 output is connected to a pulse capacitor C, and a voltage detection circuit is connected in parallel to both ends of the pulse capacitor C. The voltage detection circuit includes a series resistor R2 and an ammeter, and the frequency controllable ball gap discharge switch G1 and the protective resistor R An inductor L is connected to the low-voltage end output by the step-up transformer T2, and a grounding protection switch K1 is connected in parallel to both ends of the inductor L.
进一步地，所述式样低压端通过导线与烘箱的壳体连接，烘箱的壳体上设置有接地端。Further, the pattern low-voltage end is connected to the casing of the oven through wires, and the casing of the oven is provided with a grounding terminal.
本实用新型的有益效果为：The beneficial effects of the utility model are:
1)本实用新型在烘箱的内部设置有待检测式样，式样的式样高压端与实验电路的电路高压端连接，式样的式样低压端通过导线与实验电路的电路低压端连接，由此结构可以在实验电路对式样两端施加电压进行实验的同时，通过烘箱改变式样的温度，进而解决了现有的脉冲震荡击穿实验无法在不同温度下进行的问题。1) The utility model is provided with the pattern to be detected inside the oven, the pattern high-voltage end of the pattern is connected with the circuit high-voltage end of the experimental circuit, the pattern low-voltage end of the pattern is connected with the circuit low-voltage end of the experimental circuit by a wire, thus the structure can be used in the experiment While the circuit applies voltage to both ends of the sample to perform experiments, the temperature of the sample is changed through an oven, thereby solving the problem that the existing pulse oscillation breakdown experiment cannot be carried out at different temperatures.
2)本实用新型的烘箱与控制台连接，通过控制台可以准确控制烘箱内的温度，以得到不同温度下对实验结果的影响，解决了现有的脉冲震荡击穿实验无法得到不同温度下的实验结果的问题。2) The oven of the utility model is connected with the console, and the temperature in the oven can be accurately controlled through the console to obtain the influence of different temperatures on the experimental results, which solves the problem that the existing pulse oscillation breakdown experiments cannot obtain the results of different temperatures. problem with experimental results.
附图说明Description of drawings
图1为一种匝间绝缘击穿电压温度特性实验装置的整体结构示意图；1 is a schematic diagram of the overall structure of an experimental device for an inter-turn insulation breakdown voltage temperature characteristic;
图2为图1中的实验电路的结构示意图；Fig. 2 is the structural representation of the experimental circuit in Fig. 1;
图中：1-电路高压端；2-烘箱；3-式样高压端；4-式样低压端；5-绝缘套管；6-控制台；7-电路低压端。In the figure: 1-circuit high-voltage end; 2-oven; 3-style high-voltage end; 4-style low-voltage end; 5-insulating bushing; 6-console; 7-circuit low-voltage end.
具体实施方式Detailed ways
以下将结合附图，对本实用新型进行详细说明：Below in conjunction with accompanying drawing, the utility model is described in detail:
具体实施方式一Specific implementation mode one
结合图1所示，本实施例公开的一种匝间绝缘击穿电压温度特性实验装置，包括：烘箱2，烘箱2的内部设置有待检测式样，式样的式样高压端3与高压连接杆的底部连接，高压连接杆穿过烘箱2后与实验电路的电路高压端1连接，高压连接杆的外部设置有绝缘套管5，式样的式样低压端4通过导线与实验电路的电路低压端7连接，烘箱2与控制台6连接。As shown in FIG. 1 , an experimental device for inter-turn insulation breakdown voltage temperature characteristics disclosed in this embodiment includes: an oven 2 , the interior of the oven 2 is provided with a pattern to be tested, and the high-voltage end 3 of the pattern and the bottom of the high-voltage connecting rod Connection, the high-voltage connecting rod is connected with the circuit high-voltage end 1 of the experimental circuit after passing through the oven 2, the outside of the high-voltage connecting rod is provided with an insulating sleeve 5, and the pattern low-voltage end 4 of the pattern is connected with the circuit low-voltage end 7 of the experimental circuit through a wire, Oven 2 is connected with console 6 .
通过实验电路为式样的两端提供脉冲电压，通过烘箱2改变式样的温度，通过控制台6设定温度，以得到在该温度下的式样击穿实验数据，进而解决了现有的脉冲震荡击穿实验无法在不同温度下进行和解无法得到不同温度下的实验结果的问题。The pulse voltage is provided to both ends of the pattern through the experimental circuit, the temperature of the pattern is changed through the oven 2, and the temperature is set through the console 6 to obtain the experimental data of the pattern breakdown at this temperature, thereby solving the existing pulse shock shock. The problem that the wear experiment cannot be carried out at different temperatures and the experimental results at different temperatures cannot be obtained.
具体实施方式二Specific implementation mode two
本实施方式是在具体实施方式一的基础上，结合图2所示，进一步地，实验电路包括可调变压器T1，可调变压器T1的输出端与升压变压器T2连接，升压变压器T2输出的高压端依次串接有高压保护电阻R1、硅堆D、频率可控球隙放电开关G1和保护电阻R后连接电路高压端1，升压变压器T2输出的低压端连接电路低压端7，硅堆D和频率可控球隙放电开关G1之间与升压变压器T2输出的低压端连接有脉冲电容器C，脉冲电容器C的两端并联有电压检测电路，电压检测电路包括串联的电阻R2和电流表，频率可控球隙放电开关G1和保护电阻R之间与升压变压器T2输出的低压端连接有电感器L，电感器L的两端并联有接地保护开关K1。This embodiment is based on the specific embodiment 1, combined with what is shown in Figure 2, further, the experimental circuit includes an adjustable transformer T1, the output end of the adjustable transformer T1 is connected to the step-up transformer T2, and the output of the step-up transformer T2 The high-voltage end is connected in series with a high-voltage protection resistor R1, a silicon stack D, a frequency controllable ball gap discharge switch G1, and a protection resistor R, and then connected to the high-voltage end 1 of the circuit, and the low-voltage end output by the step-up transformer T2 is connected to the low-voltage end 7 of the circuit, and the silicon stack A pulse capacitor C is connected between D and the frequency controllable ball gap discharge switch G1 and the low-voltage end output by the step-up transformer T2. The two ends of the pulse capacitor C are connected in parallel with a voltage detection circuit. The voltage detection circuit includes a series resistor R2 and an ammeter. An inductor L is connected between the frequency controllable ball gap discharge switch G1 and the protection resistor R and the low-voltage end of the step-up transformer T2, and a grounding protection switch K1 is connected in parallel with both ends of the inductor L.
进一步地，式样低压端4通过导线与烘箱2的壳体连接，烘箱2的壳体上设置有接地端。Further, the pattern low-voltage end 4 is connected to the casing of the oven 2 through wires, and the casing of the oven 2 is provided with a grounding terminal.
通过电压检测电路中串联的电阻R2和电流表，通过电流表得到通过的电流，和电阻R2的阻值计算电压，通过接地端对电路进行保护。对试样进行脉冲电压下的击穿试验，由于被测试样是线匝结构，所以为了可靠地形成振荡波形，需要并接一个电感L，为了保护电路在线匝线路上再串接一个保护电阻，为了保证电压值全部落在试样上，保护电阻值不可过大，并联电感L为实现振荡电压，R为保护电阻。把上述设备和可控温度的烘箱组合到一起，形成高频脉冲振荡匝间绝缘击穿试验平台。Through the resistor R2 and the ammeter connected in series in the voltage detection circuit, the passing current is obtained through the ammeter, and the resistance value of the resistor R2 is used to calculate the voltage, and the circuit is protected through the grounding terminal. The sample is subjected to a breakdown test under pulse voltage. Since the sample to be tested has a coil structure, in order to reliably form an oscillation waveform, an inductance L needs to be connected in parallel. In order to protect the circuit, a protective resistor is connected in series on the coil circuit. In order to ensure that all the voltage values fall on the sample, the protection resistance value should not be too large, the parallel inductance L is to realize the oscillation voltage, and R is the protection resistance. Combining the above-mentioned equipment with a temperature-controllable oven forms a high-frequency pulse oscillation inter-turn insulation breakdown test platform.
以上实施例只是对本专利的示例性说明，并不限定它的保护范围，本领域技术人员还可以对其局部进行改变，只要没有超出本专利的精神实质，都在本专利的保护范围内。The above embodiments are only exemplary illustrations of this patent, and do not limit its protection scope. Those skilled in the art can also make partial changes to it, as long as they do not exceed the spirit and essence of this patent, they are all within the protection scope of this patent.
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| CN114184921A (en) * | 2020-08-24 | 2022-03-15 | 北京科益虹源光电技术有限公司 | Capacitance detection method and device under high pulse voltage and different working temperatures |
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| CN114184921A (en) * | 2020-08-24 | 2022-03-15 | 北京科益虹源光电技术有限公司 | Capacitance detection method and device under high pulse voltage and different working temperatures |
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