CN110548701B - Quality detection device and quality detection method suitable for air-core reactor - Google Patents
Quality detection device and quality detection method suitable for air-core reactor Download PDFInfo
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Abstract
The invention relates to a quality detection device suitable for an air reactor, which is characterized in that: the quality detection device comprises an input device, an acquisition device, a calculation device, a judgment device and a classification device which are connected in sequence; the method comprises the steps of collecting target information and target parameters in real time, collecting a plurality of time point data in a preset period, calculating an average difference, and comparing and judging the average difference with a preset value, so that whether the quality of the air reactor is qualified or not can be determined, and judgment interference possibly caused by manual quality detection is reduced; the quality of the air reactor product is graded while the quality of the air reactor is detected, so that the quality consistency of key group devices in the reactive compensator of a terminal product is ensured, the requirements of cost performance of different markets can be met, and the quality reliability of the reactive compensator can be ensured.
Description
Technical Field
The invention relates to the technical field of quality detection of air reactors, in particular to a quality detection device and a quality detection method suitable for the air reactor.
Background
The air-core reactor is a necessary device of a power distribution room at a user end of a power grid, for example, terminal power utilization occasions such as a residential area, a commercial residence, a factory and the like, so that the product quality of the air-core reactor must be ensured, and potential safety hazards such as fire, electric shock and the like caused by the problems of circuit leakage, short circuit and the like are avoided. The air reactor is usually totally closed by adopting epoxy resin in the manufacturing process, so how to detect the circuit safety of the air reactor becomes a very difficult problem.
The existing air-core reactor safety fault detection usually adopts a voltage method and a large current method, wherein the voltage method has low detection accuracy, and the large current method can cause the wire core of the air-core reactor to be burnt. Therefore, the technical effect of accurately and safely detecting the quality of the hollow reactor cannot be realized by adopting any method in the prior art.
In addition, a simple and feasible rating method suitable for the air-core reactor is not provided in the prior art, and all reactor modules are often required to guarantee consistent rating in the reactive compensator of the current integrated product, so that the reactive compensator can meet the cost performance requirements of different markets and can guarantee the quality reliability of the reactive compensator.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a quality detection device and a quality detection method suitable for an air-core reactor.
The technical scheme adopted by the invention for solving the technical problem is as follows:
the utility model provides a quality detection device suitable for air-core reactor which characterized in that: the quality detection device comprises an input device, an acquisition device, a calculation device, a judgment device and a classification device which are connected in sequence; wherein,
the input device is connected with the high-frequency current generator and is used for inputting high-frequency current with preset frequency into the air-core reactor;
the acquisition device is used for acquiring target information of the air-core reactor in a preset period;
the calculating device is used for calculating target parameters based on the target information acquired by the acquisition device;
the judgment device is used for determining whether the quality of the air reactor is qualified or not based on the target parameters obtained in the calculation device;
and the classification device classifies the air reactor with qualified quality according to a preset threshold range according to the judgment result of the judgment device.
Further, the target information of the air core reactor collected by the collecting device comprises the wire diameter temperature Ti of the air core reactor and the electric conductivity Ii of the air core reactor at different time points in a preset period.
Further, the target parameter calculated by the calculation means is an average difference of ratios Ki of the electric conductivity Ii of the air core reactor to the wire diameter temperature Ti of the air core reactor for a plurality of time points within a preset period, where Ki = Ii/Ti,
ii is the corresponding conductivity of the air reactor collected corresponding to the time point i, and the unit is S/m;
ti is the wire diameter temperature of the air-core reactor collected corresponding to the time point i, and the unit is ℃/m;
ki is the ratio of Ii to Ti at time i in units of S/DEG C,
i is the ith time point in the preset period.
Further, a target parameter threshold value is preset in the judging device, and the air reactor is determined to be unqualified in quality if and only if the target parameter calculated in the calculating device exceeds the target parameter threshold value; and if and only if the target parameter calculated in the calculating device does not exceed the target parameter threshold, determining that the quality of the air-core reactor is qualified.
Further, a first evaluation grade interval, a second evaluation grade interval and a third evaluation grade interval are preset in the classification device, and when the target parameter calculated by the calculation device is located in the first evaluation grade interval, the quality of the air-core reactor is determined to be excellent; when the target parameter calculated by the calculating device is located in the second evaluation grade interval, the quality of the air-core reactor is determined to be good; and when the target parameter calculated by the calculating device is positioned in the third evaluation grade interval, the quality of the air-core reactor is determined to be general.
Further, the upper limit value of the third evaluation level interval is equal to the target parameter threshold, and the lower limit value of the third evaluation level interval is equal to the upper limit value of the second evaluation level interval; the lower limit value of the second evaluation level interval is equal to the upper limit value of the first evaluation level interval.
Further, the invention also provides a quality detection method suitable for the air-core reactor, which is characterized by comprising the following steps: the method comprises the following steps:
1) the input device is connected with the high-frequency current generator and inputs high-frequency current with preset frequency into the air reactor;
2) the acquisition device acquires the wire diameter temperature Ti of the air reactor and the electric conductivity Ii of the air reactor at different time points in a preset period;
3) the calculating device calculates a ratio Ki corresponding to the current ith time point based on the wire diameter temperature Ti of the air reactor and the electric conductivity Ii of the air reactor, wherein Ki = Ii/Ti,
ii is the corresponding conductivity of the air reactor collected corresponding to the time point i, and the unit is S/m;
ti is the wire diameter temperature of the air-core reactor collected corresponding to the time point i, and the unit is ℃/m;
ki is the ratio of Ii to Ti at time i in units of S/DEG C,
i is the ith time point in the preset period;
4) the calculating device calculates the average difference of the specific values Ki in a preset period according to the number of the time points and takes the average difference as a target parameter;
5) the judging device judges the relation between the target parameter and a preset target parameter threshold, and if and only if the target parameter calculated in the calculating device exceeds the target parameter threshold, the quality of the air reactor is determined to be unqualified; if and only if the target parameter calculated in the calculating device does not exceed the target parameter threshold, determining that the quality of the air reactor is qualified;
6) when the quality of the air reactor is determined to be qualified, the classifying device compares the target parameter with each preset evaluation grade interval, and when the target parameter calculated by the calculating device is located in the first evaluation grade interval, the quality of the air reactor is determined to be excellent; when the target parameter calculated by the calculating device is located in the second evaluation grade interval, the quality of the air reactor is determined to be good; when the target parameter calculated by the calculating device is located in the third evaluation grade interval, the quality of the air reactor is determined to be general;
and wherein the upper limit value of the third evaluation grade interval is equal to the target parameter threshold value, and the lower limit value of the third evaluation grade interval is equal to the upper limit value of the second evaluation grade interval; the lower limit value of the second evaluation level interval is equal to the upper limit value of the first evaluation level interval.
The invention has the beneficial effects that:
(1) the method comprises the steps of collecting target information and target parameters in real time, collecting a plurality of time point data in a preset period, calculating an average difference, and comparing and judging the average difference with a preset value, so that whether the quality of the air reactor is qualified or not can be determined, and judgment interference possibly caused by manual quality detection is reduced;
(2) the quality of the air reactor product is graded while the quality of the air reactor is detected, so that the quality consistency of key group devices in the reactive compensator of a terminal product is ensured, the requirements of cost performance of different markets can be met, and the quality reliability of the reactive compensator can be ensured.
Drawings
Description figure 1 is a flow chart of steps of a quality detection method suitable for an air-core reactor.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
As shown in fig. 1, a quality detection device suitable for an air-core reactor comprises an input device, a collection device, a calculation device, a judgment device and a classification device which are connected in sequence; wherein,
the input device is connected with the high-frequency current generator and is used for inputting a high-frequency current with a preset frequency into the air-core reactor so as to measure target information of the air-core reactor after the high-frequency current passes through;
the acquisition device is used for acquiring target information of the air-core reactor in a preset period;
the calculating device is used for calculating target parameters based on the target information acquired by the acquisition device;
the judgment device is used for determining whether the quality of the air reactor is qualified or not based on the target parameters obtained in the calculation device;
and the classification device classifies the air reactors with qualified quality according to the judgment result of the judgment device and the preset threshold range.
Specifically, the target information of the air core reactor collected by the collecting device includes the wire diameter temperature Ti of the air core reactor and the electric conductivity Ii of the air core reactor at different time points in a preset period.
Specifically, the target parameter calculated by the calculation means is an average difference of ratios Ki of the electric conductivity Ii of the air core reactor to the wire diameter temperature Ti of the air core reactor for a plurality of time points within a preset period, where Ki = Ii/Ti,
ii is the corresponding conductivity of the air reactor collected corresponding to the time point i, and the unit is S/m;
ti is the wire diameter temperature of the air-core reactor collected corresponding to the time point i, and the unit is ℃/m;
ki is the ratio of Ii to Ti at time i in units of S/DEG C,
i is the ith time point in the preset period, and preferably, the selection of the plurality of time points in the preset period may select corresponding time points, which equally divide the preset period in the preset period, according to the requirement of the actual quality detection (for example, if the preset period is selected to be 5h, each time point, which equally divides the preset period 5h into 5 segments, may be selected).
Specifically, a target parameter threshold value is preset in the judging device, and if and only if the target parameter calculated in the calculating device exceeds the target parameter threshold value, the quality of the air-core reactor is determined to be unqualified; and if and only if the target parameter calculated in the calculation device does not exceed the target parameter threshold, determining that the quality of the air reactor is qualified, as a further preference, adjusting the preset target parameter threshold, wherein the preset target parameter threshold is different according to different types of the air reactors to be detected, and correcting the target parameter threshold corresponding to the air reactor after detecting the quality of the air reactors of the same type and the same model for multiple times.
Specifically, a first evaluation grade interval, a second evaluation grade interval and a third evaluation grade interval are preset in the classification device, and when the target parameter calculated by the calculation device is located in the first evaluation grade interval, the quality of the air reactor is determined to be excellent; when the target parameter calculated by the calculating device is located in the second evaluation grade interval, the quality of the air reactor is determined to be good; and when the target parameter calculated by the calculating device is positioned in the third evaluation grade interval, the quality of the air reactor is determined to be general, so that the qualified air reactor is graded for the product quality after whether the quality of the air reactor is qualified is determined.
Specifically, the upper limit value of the third evaluation grade interval is equal to the target parameter threshold, and the lower limit value of the third evaluation grade interval is equal to the upper limit value of the second evaluation grade interval; and the lower limit value of the second evaluation grade interval is equal to the upper limit value of the first evaluation grade interval, so that a target parameter threshold value is used as a standard line for evaluating whether the air reactor is qualified or not, when the target parameter threshold value is exceeded, the quality of the air reactor is determined to be unqualified, and when the target parameter threshold value is not exceeded, the closer to the target parameter threshold value, the lower the quality rating of the air reactor is, and the farther from the target parameter threshold value, the higher the quality rating of the air reactor is.
Specifically, the invention also provides a quality detection method suitable for the air-core reactor, which comprises the following steps:
1) the input device is connected with the high-frequency current generator and inputs high-frequency current with preset frequency into the air reactor;
2) the acquisition device acquires the wire diameter temperature Ti of the air reactor and the electric conductivity Ii of the air reactor at different time points in a preset period;
3) the calculating device calculates a ratio Ki corresponding to the current ith time point based on the wire diameter temperature Ti of the air reactor and the electric conductivity Ii of the air reactor, wherein Ki = Ii/Ti,
ii is the corresponding conductivity of the air reactor collected corresponding to the time point i, and the unit is S/m;
ti is the wire diameter temperature of the air-core reactor collected corresponding to the time point i, and the unit is ℃/m;
ki is the ratio of Ii to Ti at time i in units of S/DEG C,
i is the ith time point in the preset period;
4) the calculating device calculates the average difference of the specific values Ki in a preset period according to the number of the time points and takes the average difference as a target parameter;
5) the judging device judges the relation between the target parameter and a preset target parameter threshold, and if and only if the target parameter calculated in the calculating device exceeds the target parameter threshold, the quality of the air reactor is determined to be unqualified; if and only if the target parameter calculated in the calculating device does not exceed the target parameter threshold, determining that the quality of the air reactor is qualified;
6) when the quality of the air reactor is determined to be qualified, the classifying device compares the target parameter with each preset evaluation grade interval, and when the target parameter calculated by the calculating device is located in the first evaluation grade interval, the quality of the air reactor is determined to be excellent; when the target parameter calculated by the calculating device is located in the second evaluation grade interval, the quality of the air reactor is determined to be good; when the target parameter calculated by the calculating device is located in the third evaluation grade interval, the quality of the air reactor is determined to be general;
and wherein the upper limit value of the third evaluation grade interval is equal to the target parameter threshold value, and the lower limit value of the third evaluation grade interval is equal to the upper limit value of the second evaluation grade interval; the lower limit value of the second evaluation level interval is equal to the upper limit value of the first evaluation level interval.
Preferably, if the air-core reactor has a risk of insulation leakage, a period of time during which the initial wire diameter temperature of the air-core reactor rises to the preset wire diameter temperature from the input of the high-frequency current of the preset frequency is extended relative to a normal air-core reactor. Thus, as another preferred embodiment,
the invention also provides a quality detection method applicable to the air-core reactor by comparing the temperature rise time periods, which is characterized by comprising the following steps of: the method comprises the following steps:
1) the acquisition device comprising a temperature detection device detects the initial line diameter temperature T0 of the air reactor;
2) the input device is connected with the high-frequency current generator and inputs high-frequency current with preset frequency into the air reactor;
3) the acquisition device acquires the real-time temperature of the air reactor in a power-on state in real time, and when the line diameter temperature of the air reactor rises to a preset line diameter temperature T1, the calculation device calculates the real-time period T1 when the line diameter temperature of the air reactor rises from an initial line diameter temperature T0 to a preset line diameter temperature T1;
4) the judging device judges the relation between the real-time period t1 calculated by the calculating device and the preset time period t0, and if and only if the real-time period t1 calculated by the calculating device exceeds the preset time period t0, the quality of the air reactor is determined to be unqualified; if and only if the real-time period t1 calculated in the calculating device does not exceed the preset time period t0, determining that the quality of the air reactor is qualified;
6) when the quality of the air reactor is judged to be qualified, the classifying device compares the real-time period with each preset evaluation grade interval, and when the real-time period calculated by the calculating device is located in the first evaluation grade interval, the quality of the air reactor is judged to be excellent; when the target parameter calculated by the calculating device is located in the second evaluation grade interval, the quality of the air reactor is determined to be good; and when the target parameter calculated by the calculating device is positioned in the third evaluation grade interval, the quality of the air-core reactor is determined to be general.
The third evaluation grade interval is closest to the preset time period t0 and does not exceed the preset time period t0, and the first evaluation grade interval is farthest from the preset time period.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (1)
1. The utility model provides a quality detection device suitable for air-core reactor which characterized in that: the quality detection device comprises an input device, an acquisition device, a calculation device, a judgment device and a classification device which are connected in sequence; wherein,
the input device is connected with the high-frequency current generator and is used for inputting high-frequency current with preset frequency into the air-core reactor;
the acquisition device is used for acquiring target information of the air-core reactor in a preset period;
the calculating device is used for calculating target parameters based on the target information acquired by the acquisition device;
the judgment device is used for determining whether the quality of the air reactor is qualified or not based on the target parameters obtained in the calculation device;
the classification device classifies the air reactor with qualified quality according to a preset threshold range according to the judgment result of the judgment device;
the target information of the air core reactor acquired by the acquisition device comprises the wire diameter temperature Ti of the air core reactor and the conductivity Ii of the air core reactor at different time points in a preset period;
the target parameter calculated by the calculation device is the average difference of the ratio Ki of the electric conductivity Ii of the air reactor and the linear diameter temperature Ti of the air reactor at a plurality of time points in a preset period, wherein Ki = Ii/Ti,
ii is the corresponding conductivity of the air reactor collected corresponding to the time point i, and the unit is S/m;
ti is the wire diameter temperature of the air-core reactor collected corresponding to the time point i, and the unit is ℃/m;
ki is the ratio of Ii to Ti at time i in units of S/DEG C,
i is the ith time point in the preset period;
a target parameter threshold value is preset in the judging device, and the air reactor is determined to be unqualified in quality if and only if the target parameter calculated in the calculating device exceeds the target parameter threshold value; if and only if the target parameter calculated in the calculating device does not exceed the target parameter threshold, determining that the quality of the air-core reactor is qualified;
a first evaluation grade interval, a second evaluation grade interval and a third evaluation grade interval are preset in the classification device, and when the target parameter calculated by the calculation device is located in the first evaluation grade interval, the quality of the air-core reactor is determined to be excellent; when the target parameter calculated by the calculating device is located in the second evaluation grade interval, the quality of the air-core reactor is determined to be good; when the target parameter calculated by the calculating device is located in the third evaluation grade interval, the quality of the air-core reactor is determined to be general;
the upper limit value of the third evaluation grade interval is equal to the target parameter threshold, and the lower limit value of the third evaluation grade interval is equal to the upper limit value of the second evaluation grade interval; the lower limit value of the second evaluation level interval is equal to the upper limit value of the first evaluation level interval.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4058219A (en) * | 1976-10-26 | 1977-11-15 | Lorlin Industries Inc. | Method and apparatus for automatically testing reeled axial-lead electrical devices under environmental conditions |
| JP2001042001A (en) * | 1999-07-29 | 2001-02-16 | Ando Electric Co Ltd | Ic socket |
| KR20120059766A (en) * | 2010-12-01 | 2012-06-11 | 현대자동차주식회사 | Device for measuring physical properties of GDL for fuel cell |
| CN202387677U (en) * | 2012-01-09 | 2012-08-22 | 惠州市园方电池设备有限公司 | Automatic collecting and sorting machine with scanning and detecting functions for voltage and internal resistance of lithium battery finished product |
| CN203610334U (en) * | 2013-12-23 | 2014-05-28 | 浙江世明电器有限公司 | Inductance automatic testing sorter for transformers |
| CN109188222A (en) * | 2018-09-28 | 2019-01-11 | 云南电网有限责任公司曲靖供电局 | A kind of detection method and device of air reactor insulation fault |
| CN208825029U (en) * | 2018-09-27 | 2019-05-07 | 湖南俊宇电子科技有限公司 | A kind of inductor performance automatic test instrument |
-
2019
- 2019-09-12 CN CN201910865241.5A patent/CN110548701B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4058219A (en) * | 1976-10-26 | 1977-11-15 | Lorlin Industries Inc. | Method and apparatus for automatically testing reeled axial-lead electrical devices under environmental conditions |
| JP2001042001A (en) * | 1999-07-29 | 2001-02-16 | Ando Electric Co Ltd | Ic socket |
| KR20120059766A (en) * | 2010-12-01 | 2012-06-11 | 현대자동차주식회사 | Device for measuring physical properties of GDL for fuel cell |
| CN202387677U (en) * | 2012-01-09 | 2012-08-22 | 惠州市园方电池设备有限公司 | Automatic collecting and sorting machine with scanning and detecting functions for voltage and internal resistance of lithium battery finished product |
| CN203610334U (en) * | 2013-12-23 | 2014-05-28 | 浙江世明电器有限公司 | Inductance automatic testing sorter for transformers |
| CN208825029U (en) * | 2018-09-27 | 2019-05-07 | 湖南俊宇电子科技有限公司 | A kind of inductor performance automatic test instrument |
| CN109188222A (en) * | 2018-09-28 | 2019-01-11 | 云南电网有限责任公司曲靖供电局 | A kind of detection method and device of air reactor insulation fault |
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Denomination of invention: A quality testing device and quality testing method suitable for hollow core reactors Granted publication date: 20210903 Pledgee: Bank of China Limited Dingmaoqiao Branch, Zhenjiang Pledgor: JIANGSU SONERGY ELECTRONICS TECHNOLOGY CO.,LTD. Registration number: Y2024980001452 |
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