CN204008712U - Capacitive apparatus bottom shielding of bushing measuring device with electricity - Google Patents
Capacitive apparatus bottom shielding of bushing measuring device with electricity Download PDFInfo
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- CN204008712U CN204008712U CN201420356789.XU CN201420356789U CN204008712U CN 204008712 U CN204008712 U CN 204008712U CN 201420356789 U CN201420356789 U CN 201420356789U CN 204008712 U CN204008712 U CN 204008712U
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Abstract
本实用新型涉及一种容性设备套管末屏带电检测装置，其主要特点是：包括带电检测箱体和设置在带电检测箱体内的检测电路，在带电检测箱体上设有一个刀闸和一对测量端子，所述的容性设备末屏引线与带电检测箱体内的检测电路相连接，所述的检测电路包括一个放电间隙和一组快速导通二极管，所述的放电间隙以及一组快速导通二极管与带电检测箱体上的测量端子、刀闸并联在一起，容性设备末屏引线通过刀闸接地。本实用新型设计合理，将容性设备末屏引线接入到带电检测箱体并与箱体内的检测电路相连接，用于开展容性设备末屏的带电检测，既能方便末屏信号的取用，又能保证末屏的可靠接地，更加方便地进行容性设备套管末屏带电测试，降低安全隐患。
The utility model relates to a charging detection device for the end screen of a capacitive equipment bushing, which is mainly characterized in that it includes a charging detection box and a detection circuit arranged in the charging detection box, and a knife switch and a switch are arranged on the charging detection box A pair of measuring terminals, the lead wire of the end screen of the capacitive device is connected with the detection circuit in the charged detection box, the detection circuit includes a discharge gap and a group of fast conduction diodes, the discharge gap and a set of The fast conduction diode is connected in parallel with the measuring terminal and the knife switch on the live detection box, and the lead wire of the end screen of the capacitive equipment is grounded through the knife switch. The utility model has a reasonable design, and the lead wire of the end screen of the capacitive equipment is connected to the live detection box and connected with the detection circuit in the box, which is used to carry out the live detection of the end screen of the capacitive equipment, which can not only facilitate the acquisition of the signal of the end screen It can also ensure the reliable grounding of the end screen, and it is more convenient to carry out the live test of the end screen of the capacitive equipment bushing, reducing potential safety hazards.
Description
技术领域technical field
本实用新型属于容性设备技术领域，尤其是一种容性设备套管末屏带电检测装置。The utility model belongs to the technical field of capacitive equipment, in particular to a charging detection device for the end screen of the casing of the capacitive equipment.
背景技术Background technique
电力系统中运行着大量的电容性设备，如高压电容型套管、耦合电容器、电容式电压互感器、电容式电流互感器等等。这些设备检修项目明确，测试工作量相对较大，为状态检修工作的开展带来了一定困难。随着状态检测技术的发展，容性设备带电检测技术越来越受到重视。容性设备的带电检测项目主要有介质损耗因数和电容量测量、高频局部放电测量等，要进行这两项测试需要取套管末屏的电流信号，而末屏接地方式多样，且多位于高处，不便于测试，而且一旦测试时操作不慎，容易导致末屏接地不良，造成末屏对地开路引发事故。There are a large number of capacitive devices running in the power system, such as high-voltage capacitive bushings, coupling capacitors, capacitive voltage transformers, capacitive current transformers, and so on. These equipment maintenance items are clear, and the testing workload is relatively large, which brings certain difficulties to the development of condition-based maintenance work. With the development of status detection technology, more and more attention has been paid to the live detection technology of capacitive equipment. The live detection items of capacitive equipment mainly include dielectric loss factor and capacitance measurement, high-frequency partial discharge measurement, etc. To carry out these two tests, the current signal of the end screen of the bushing needs to be taken, and the end screen grounding method is various, and most of them are located at The high place is not convenient for testing, and once the test is performed carelessly, it will easily lead to poor grounding of the final screen, resulting in an open circuit between the final screen and the ground and causing accidents.
发明内容Contents of the invention
本实用新型的目的在于克服现有技术的不足，提供一种设计合理、使用方便且能够保证末屏可靠接地的容性设备套管末屏带电检测装置。The purpose of the utility model is to overcome the deficiencies of the prior art, and provide a capacitive equipment bushing end-shield electrification detection device which is reasonable in design, easy to use and can ensure reliable grounding of the end shield.
本实用新型解决其技术问题是采取以下技术方案实现的：The utility model solves its technical problem and realizes by taking the following technical solutions:
一种容性设备套管末屏带电检测装置，包括带电检测箱体和设置在带电检测箱体内的检测电路，在带电检测箱体上设有一个刀闸和一对测量端子，所述的容性设备末屏引线与带电检测箱体内的检测电路相连接，所述的检测电路包括一个放电间隙和一组快速导通二极管，所述的放电间隙以及一组快速导通二极管与带电检测箱体上的测量端子、刀闸并联在一起，容性设备末屏引线通过刀闸接地。A charging detection device for the end screen of a capacitive equipment bushing, comprising a charging detection box and a detection circuit arranged in the charging detection box, a knife switch and a pair of measuring terminals are arranged on the charging detection box, the capacitive The lead wires at the end of the permanent equipment are connected to the detection circuit in the live detection box. The detection circuit includes a discharge gap and a group of fast conduction diodes. The discharge gap and a group of fast conduction diodes are connected to the live detection box. The measurement terminals on the device and the knife switch are connected in parallel, and the lead wire of the end screen of the capacitive equipment is grounded through the knife switch.
而且，所述的快速导通二极管组包括四只快速导通二极管，其中两组快速导通二极管串联后正向安装在检测电路中，另外两组快速导通二极管串联后反向安装在检测电路中。Moreover, the fast conduction diode group includes four fast conduction diodes, wherein two sets of fast conduction diodes are installed in the detection circuit in the forward direction after being connected in series, and the other two groups of fast conduction diodes are installed in the detection circuit in reverse direction after being connected in series. middle.
而且，所述的带电检测箱体上还设有一对保护压板，该对保护压板与刀闸并联在检测电路中。Moreover, a pair of protective pressure plates are provided on the live detection box, and the pair of protective pressure plates are connected in parallel with the knife switch in the detection circuit.
本实用新型的优点和积极效果是：Advantage and positive effect of the present utility model are:
本实用新型设计合理，将容性设备末屏引线接入到带电检测箱体并与箱体内的检测电路相连接，用于开展容性设备末屏的带电检测，既能方便末屏信号的取用，又能保证末屏的可靠接地，更加方便地进行容性设备套管末屏带电测试，降低安全隐患，保证了电力系统的正常运行。The utility model has a reasonable design, and the lead wire of the end screen of the capacitive equipment is connected to the live detection box and connected with the detection circuit in the box, which is used to carry out the live detection of the end screen of the capacitive equipment, which can not only facilitate the acquisition of the signal of the end screen It can also ensure the reliable grounding of the end screen, and it is more convenient to carry out the live test of the end screen of the capacitive equipment bushing, which reduces potential safety hazards and ensures the normal operation of the power system.
附图说明Description of drawings
图1是本实用新型的电路连接示意图。Fig. 1 is the circuit connection diagram of the utility model.
具体实施方式Detailed ways
以下结合附图对本实用新型实施例做进一步详述：Below in conjunction with accompanying drawing, the utility model embodiment is described in further detail:
一种容性设备套管末屏带电检测装置，如图1所示，包括带电检测箱体和设置在带电检测箱体内的检测电路。在带电检测箱体上设有一个刀闸K、一对测量端子和一对保护压板，所述的容性设备末屏引线与带电检测箱体内的检测电路相连接，所述的检测电路包括一个放电间隙P和一组快速导通二极管D，所述的放电间隙P以及一组快速导通二极管与带电检测箱体上的测量端子、保护压板、刀闸K并联在一起，容性设备末屏引线通过刀闸K接地。所述的快速导通二极管组包括四只快速导通二极管，其中两组快速导通二极管串联后正向安装在检测电路中，另外两组快速导通二极管串联后反向安装在检测电路中。A charging detection device at the end screen of a capacitive equipment bushing, as shown in Figure 1, includes a charging detection box and a detection circuit arranged in the charging detection box. A knife switch K, a pair of measuring terminals and a pair of protective pressure plates are arranged on the live detection box, and the lead wire of the end screen of the capacitive equipment is connected with the detection circuit in the live detection box, and the detection circuit includes a Discharge gap P and a group of fast conduction diodes D, the discharge gap P and a group of fast conduction diodes are connected in parallel with the measurement terminal, protective pressure plate and knife switch K on the live detection box, and the end screen of the capacitive device The lead wire is grounded through the knife switch K. The fast conduction diode group includes four fast conduction diodes, wherein two sets of fast conduction diodes are installed in the detection circuit forwardly after being connected in series, and the other two sets of fast conduction diodes are connected in series and installed reversely in the detection circuit.
本实用新型的使用方法为：从容性设备末屏引线，接入带电检测箱上并通过刀闸K接地。在非测量状态时刀闸K闭合，保持设备末屏接地状态不变。在进行高频局放检测时，可直接将高频CT套在接地引线上，然后将刀闸K打开，进行测量。在进行介质损耗因数和电容量测试时，先将测试仪接在带电检测箱体测量端子子上，然后将刀闸K打开，进行测量。The usage method of the utility model is as follows: lead wires from the end screen of the capacitive equipment, connect to the charged detection box and ground through the knife switch K. In the non-measurement state, the knife switch K is closed, and the grounding state of the end screen of the equipment remains unchanged. When performing high-frequency partial discharge detection, you can directly put the high-frequency CT on the grounding lead, and then open the knife switch K for measurement. When performing the dielectric loss factor and capacitance test, first connect the tester to the measurement terminal of the live detection box, and then open the knife switch K for measurement.
本实用新型为确保设备可靠运行及现场作业安全，防止由于测量引线损坏(开路)或误操作等意外原因导致的设备末屏开路，在带电检测箱内设置了放电间隙P和快速导通二极管D等保护措施。在设备正常运行或正常测试状态时，保护不起作用；当末屏对地开路时，电流通过导通二极管D与地构成回路，保证了设备的安全运行。在带电检测箱上设置保护压板便于继电保护等二次回路的投入和退出。In order to ensure the reliable operation of the equipment and the safety of on-site operations, the utility model prevents the open circuit of the end screen of the equipment caused by accidents such as damage to the measuring lead (open circuit) or misoperation, and a discharge gap P and a fast conduction diode D are arranged in the live detection box. and other protective measures. When the equipment is in normal operation or normal test state, the protection does not work; when the last screen is open to the ground, the current forms a loop through the conduction diode D and the ground, ensuring the safe operation of the equipment. The protective pressure plate is set on the live detection box to facilitate the input and exit of secondary circuits such as relay protection.
需要强调的是，本实用新型所述的实施例是说明性的，而不是限定性的，因此本实用新型包括并不限于具体实施方式中所述的实施例，凡是由本领域技术人员根据本实用新型的技术方案得出的其他实施方式，同样属于本实用新型保护的范围。It should be emphasized that the embodiments described in the utility model are illustrative rather than restrictive, so the utility model includes but not limited to the embodiments described in the specific implementation, and those skilled in the art according to the utility model Other implementations derived from the new technical solution also belong to the scope of protection of the utility model.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420356789.XU CN204008712U (en) | 2014-06-30 | 2014-06-30 | Capacitive apparatus bottom shielding of bushing measuring device with electricity |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420356789.XU CN204008712U (en) | 2014-06-30 | 2014-06-30 | Capacitive apparatus bottom shielding of bushing measuring device with electricity |
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| CN204008712U true CN204008712U (en) | 2014-12-10 |
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| CN201420356789.XU Expired - Lifetime CN204008712U (en) | 2014-06-30 | 2014-06-30 | Capacitive apparatus bottom shielding of bushing measuring device with electricity |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105372457A (en) * | 2015-11-25 | 2016-03-02 | 国家电网公司 | Capacitive equipment electrified detection end screen sampling device |
| CN106249054A (en) * | 2016-09-18 | 2016-12-21 | 广州供电局有限公司 | Capacitance type potential transformer and integration detection sensor thereof |
| CN110988493A (en) * | 2019-12-31 | 2020-04-10 | 湖南慧眼电力智能监测设备有限公司 | On-line monitoring intelligent capacitive high-voltage electrical equipment |
-
2014
- 2014-06-30 CN CN201420356789.XU patent/CN204008712U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105372457A (en) * | 2015-11-25 | 2016-03-02 | 国家电网公司 | Capacitive equipment electrified detection end screen sampling device |
| CN105372457B (en) * | 2015-11-25 | 2018-06-19 | 国家电网公司 | A kind of capacitance type equipment live detection end shield sampler |
| CN106249054A (en) * | 2016-09-18 | 2016-12-21 | 广州供电局有限公司 | Capacitance type potential transformer and integration detection sensor thereof |
| CN106249054B (en) * | 2016-09-18 | 2019-12-10 | 广州供电局有限公司 | Capacitance type voltage transformer and integrated detection sensor thereof |
| CN110988493A (en) * | 2019-12-31 | 2020-04-10 | 湖南慧眼电力智能监测设备有限公司 | On-line monitoring intelligent capacitive high-voltage electrical equipment |
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Address after: 300010 Tianjin city Hebei District Wujing Road No. 39 Patentee after: State Grid Corporation of China Patentee after: STATE GRID TIANJIN ELECTRIC POWER Co. Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee before: State Grid Corporation of China Patentee before: STATE GRID TIANJIN ELECTRIC POWER Co. |
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Granted publication date: 20141210 |