CN102354603B - Intelligent capacitor - Google Patents
Intelligent capacitor Download PDFInfo
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- CN102354603B CN102354603B CN 201110320925 CN201110320925A CN102354603B CN 102354603 B CN102354603 B CN 102354603B CN 201110320925 CN201110320925 CN 201110320925 CN 201110320925 A CN201110320925 A CN 201110320925A CN 102354603 B CN102354603 B CN 102354603B
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- current transformer
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Abstract
The invention provides an intelligent capacitor. Current transformers and high-precision resistors are additionally arranged; the current values of both ends of each high-precision resistor connected in parallel on the capacitor are measured through the current transformers, and then, the voltage values of both ends of the capacitor are worked out; then, the current value of the capacitor is obtained through the detection of the current transformers connected in series on the capacitor; according to the voltage value and the current value of the capacitor, the actual capacitance value of the capacitor is worked out; the actual value of the capacitor and the rated value of the capacitor are compared to judge whether the capacitor breaks down or not; and then, the concrete position of the capacitor breaking down is rapidly determined, thereby, the working capacity of the maintenance process is reduced, and the power failure time is shortened.
Description
Technical field
The present invention relates to the high voltage technique field, relate in particular a kind of Intelligent capacitor.
Background technology
In ultra-high-tension power transmission line, capacitor is absolutely necessary.Capacitor is comprised of center, tank wall and case lid, and being used for provides capacitive reactive power or filtering harmonic wave to power circuit or equipment, to improve its power factor and the quality of power supply.Using at present more in transmission line is separate unit formula capacitor.Single capacitor is installed on the framework of the capacitor device that designs, and then uses twisted wire or copper (aluminium) row to connect.
In these cases, if capacitor breaks down, then need to determine first the installation site of fault capacitor and then change or keep in repair.Usually the fault detection method that adopts is measured eliminating by platform for the maintenance personal utilizes capacitance meter or other measuring instrument in the situation that capacitor device cuts off the power supply fully.But because the capacitors count in the capacitor device is numerous, and the installation frame of capacitor is very high again, like this in maintenance with when detecting, and maintenance personal's be difficult to determine fast and accurately to break down particular location of capacitor, and then aggravated maintenance personal's workload, and prolonged interruption duration.
Summary of the invention
In view of this, the invention provides a kind of Intelligent capacitor, can determine fast and accurately the position of fault capacitor, reduced maintenance personal's workload and reduced interruption duration.
For achieving the above object, the invention provides following technical scheme:
A kind of Intelligent capacitor comprises that resistance is the high-accuracy resistance of fixed value, also comprises:
Be in series with described center, detect the first current transformer of the current value of described capacitor place branch road;
Connect with described high-accuracy resistance, and with branch road and described center and described the first current transformer place branch circuit parallel connection that described high-accuracy resistance forms, detect the second current transformer of the current value of described resistance place branch road;
Be connected with the first current transformer and the second current transformer respectively, transmit the electric connector of the current value of described the first current transformer and the second current transformer detection;
Link to each other with described electric connector, receive the current value of the described current transformer detection of described electric connector transmission, the current value of the described resistance place branch road that detects according to described the second current transformer and the resistance of described resistance obtain the magnitude of voltage of described capacitor, and the current value of the described capacitor place branch road that detects according to magnitude of voltage and described first current transformer of described capacitor calculates the reception computing module of the actual capacitance value of described capacitor.
Preferably, also comprise:
Link to each other the comparison module of more described capacitor actual capacitance value and rated capacity value with described reception computing module.
Preferably, also comprise:
Link to each other with described comparison module, show actual capacitance value and the rated capacity value of described capacitor, display module.
Preferably, described display module and described comparison module transmit institute's capacitor actual capacitance value of telling and rated value signal by radio transmitting device.
Preferably, described electric connector, described the first current transformer and described the second current transformer all with the insulation of the center of described capacitor.
Preferably, the shell of described the first current transformer, the second current transformer and described capacitor all is connected with heat abstractor.
Preferably, the installation site of described electric connector is the parallel position of oil filler point.
Via above-mentioned technical scheme as can be known, compared with prior art, the invention provides a kind of Intelligent capacitor, current transformer and high-accuracy resistance have been increased, be connected in parallel on the current value at the high-accuracy resistance two ends on the capacitor by the current transformer measurement, and then calculate the magnitude of voltage at capacitor two ends, detect the current value that obtains capacitor by the current transformer that is connected on the capacitor again, voltage and current value according to capacitor, calculate the actual capacitance value of capacitor, judge whether fault of this capacitor according to the capacitor actual value that calculates, and then the particular location of the capacitor of determining fast to break down, reduce the workload of maintenance process, and shortened interruption duration.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is embodiments of the invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to the accompanying drawing that provides other accompanying drawing.
Fig. 1 is the structure chart of a kind of Intelligent capacitor provided by the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
The embodiment of the invention provides a kind of Intelligent capacitor, and resistance in parallel is the high-accuracy resistance of fixed value on center, also comprises: be in series with described center, detect the first current transformer of the current value of described capacitor place branch road; Connect with described resistance, and with branch road and described center and described the first current transformer place branch circuit parallel connection that described resistance forms, detect the second current transformer of the current value of described resistance place branch road; Be connected with the first current transformer and the second current transformer respectively, transmit the electric connector of the current value of described the first current transformer and the second current transformer detection; Link to each other with described electric connector, receive the current value of the described current transformer detection of described electric connector transmission, the current value of the described resistance place branch road that detects according to described the second current transformer and the resistance of described resistance obtain the magnitude of voltage of described capacitor, and the current value of the described capacitor place branch road that detects according to magnitude of voltage and described first current transformer of described capacitor calculates the reception computing module of the actual capacitance value of described capacitor.
Please refer to Fig. 1, Fig. 1 is the structure chart of a kind of capacitor faults checkout gear provided by the invention, and wherein, high-accuracy resistance 5 is in parallel with center 8, and current transformer 3 is connected with center 8 and detected the current value of described center 8; Current transformer 4 is connected with high-accuracy resistance 5 and is detected the current value of described high-accuracy resistance 5, because the resistance of high-accuracy resistance is fixing given value, by simple computing formula: voltage=electric current * resistance obtains the magnitude of voltage at high-accuracy resistance 5 two ends, again because center 8 and high-accuracy resistance 5 are in parallel and current transformer close to short circuit, and then obtain the magnitude of voltage at center 8 two ends; By electric connector 1 current value and the magnitude of voltage of described center 8 is transferred to the reception computing module, and then calculates the actual capacitance value of center 8.
Need to prove, in the present embodiment, electric connector 1, current transformer 3 summation current transformers 4 all with center 8 insulation of capacitor, and the shell of current transformer 3 summation current transformers 4 linked to each other with capacitor tank wall 9, and is connected with heat abstractor at tank wall 9.Except this, choosing of current transformer is that nominal parameter according to capacitor is determined, rated current such as capacitor is 50A, when choosing current sensor, just can consider the overcurrent multiple that capacitor allows, choose the transducer of 80～100A, the too small of choosing may damage transducer, and the excessive measurement data that can cause again is inaccurate.On the basis of above-mentioned capacitor checkout gear, also comprise with described reception calculating linking to each other the comparison module of more described capacitor actual capacitance value and rated capacity value.If the actual capacitance value of described capacitor is different from the rated value of described capacitor, illustrate that then this capacitor breaks down, and then determined fast and accurately the position of capacitor, be convenient to maintenance personal's maintenance work, reduced simultaneously interruption duration.
Except this, present embodiment has also increased the display module that links to each other with described comparison module, and the device that the comparative result of actual capacitance value, rated value and the actual capacitance value of capacitor and rated capacity value can be highlighted is such as LCDs etc.; Also comprise with described comparison module linking to each other, when the actual value of described capacitor and rated value not simultaneously, send the voice guard of caution prompting sound.Be convenient to the maintenance personal and find timely fault electric capacity, and then maintenance.
Above-mentioned explanation to the embodiment that provides makes this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be apparent concerning those skilled in the art, and General Principle as defined herein can in the situation that does not break away from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but principle and the features of novelty the widest consistent scope that provides with this paper will be provided.
Claims (4)
1. an Intelligent capacitor is characterized in that, comprises that resistance is the first resistance of preset value, also comprises:
Be in series with center, detect the first current transformer of the current value of described center place branch road;
Connect with described the first resistance, and with branch road and described center and described the first current transformer place branch circuit parallel connection that described the first resistance forms, detect the second current transformer of the current value of described the first resistance place branch road;
Be in series with described the first current transformer and described the second current transformer respectively, transmit the electric connector of the current value of described the first current transformer and the second current transformer detection;
Link to each other with described electric connector, receive described first current transformer of described electric connector transmission and the current value that described the second current transformer detects, the current value of described the first resistance place branch road that detects according to described the second current transformer and the resistance of described the first resistance obtain the magnitude of voltage of described center, and the current value of the described center place branch road that detects according to magnitude of voltage and described first current transformer of described center calculates the reception computing module of the actual capacitance value of described center;
Link to each other the comparison module of more described center actual capacitance value and rated capacity value with described reception computing module;
Link to each other with described comparison module, show the display module of actual capacitance value and the rated capacity value of described capacitor.
2. capacitor according to claim 1 is characterized in that, described display module and described comparison module transmit actual capacitance value and the rated value signal of described center by radio transmitting device.
3. capacitor according to claim 1 is characterized in that, described electric connector, described the first current transformer and described the second current transformer all insulate with described center.
4. the capacitor of telling according to claim 1 is characterized in that, the shell of described the first current transformer, the second current transformer and described capacitor all is connected with heat abstractor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110320925 CN102354603B (en) | 2011-10-20 | 2011-10-20 | Intelligent capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110320925 CN102354603B (en) | 2011-10-20 | 2011-10-20 | Intelligent capacitor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102354603A CN102354603A (en) | 2012-02-15 |
| CN102354603B true CN102354603B (en) | 2013-10-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110320925 Expired - Fee Related CN102354603B (en) | 2011-10-20 | 2011-10-20 | Intelligent capacitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102354603B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201359924Y (en) * | 2008-12-19 | 2009-12-09 | 江苏南自通华电力自动化有限公司 | Low-voltage intelligent capacitor |
| CN201611781U (en) * | 2010-01-08 | 2010-10-20 | 杭州德力西集团有限公司 | Multipath cascade intelligent capacitor with intelligent compensation |
-
2011
- 2011-10-20 CN CN 201110320925 patent/CN102354603B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201359924Y (en) * | 2008-12-19 | 2009-12-09 | 江苏南自通华电力自动化有限公司 | Low-voltage intelligent capacitor |
| CN201611781U (en) * | 2010-01-08 | 2010-10-20 | 杭州德力西集团有限公司 | Multipath cascade intelligent capacitor with intelligent compensation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102354603A (en) | 2012-02-15 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: QINGDAO HENGSHUN ZHONGSHENG MANUFATURING CO., LTD. Free format text: FORMER OWNER: QINGDAO HENGSHUN ZHONGSHENG GROUP CO., LTD. Effective date: 20150813 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| C56 | Change in the name or address of the patentee |
Owner name: QINGDAO HENGSHUN ZHONGSHENG GROUP CO., LTD. Free format text: FORMER NAME: QINGDAO EVERCONTAINING ELECTRIC CO., LTD. |
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| CP03 | Change of name, title or address |
Address after: 266108 Airport Industrial Park, Liuting street, Chengyang District, Shandong, Qingdao Patentee after: QINGDAO HENGSHUN ZHONGSHENG GROUP Co.,Ltd. Address before: 266108 Shandong Province, Qingdao city Chengyang District Airport Industrial Park No. three West Gate Patentee before: EVERCONTAINING ELECTRIC Co.,Ltd. |
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| TR01 | Transfer of patent right |
Effective date of registration: 20150813 Address after: 266108 Airport Industrial Park, Liuting street, Chengyang District, Shandong, Qingdao Patentee after: Qingdao Hengshun Zhongsheng Electric Manufacturing Co.,Ltd. Address before: 266108 Airport Industrial Park, Liuting street, Chengyang District, Shandong, Qingdao Patentee before: QINGDAO HENGSHUN ZHONGSHENG GROUP Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131023 Termination date: 20201020 |
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| CF01 | Termination of patent right due to non-payment of annual fee |