CN203310990U - On-site accuracy verification device for 750 kV current transformer - Google Patents
On-site accuracy verification device for 750 kV current transformer Download PDFInfo
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- CN203310990U CN203310990U CN2013203247581U CN201320324758U CN203310990U CN 203310990 U CN203310990 U CN 203310990U CN 2013203247581 U CN2013203247581 U CN 2013203247581U CN 201320324758 U CN201320324758 U CN 201320324758U CN 203310990 U CN203310990 U CN 203310990U
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Abstract
An on-site accuracy verification device for a 750 kV current transformer comprises a voltage regulator I and a voltage regulator II. One terminal of the voltage regulator I is electrically connected with one terminal of a current booster group I, the other terminal of the current booster group I is electrically connected with one terminal of a compensating capacitor group I, and the other terminal of the compensating capacitor group I is a first current output port. One terminal of the voltage regulator II is electrically connected with one terminal of a current booster group II, the other terminal of the current booster group II is electrically connected with a compensating capacitor group II, and the other terminal of the compensating capacitor group II is a second current output port. The on-site accuracy verification device for the 750 kV current transformer is high in mechanical automation degree; and compared to conventional test modes, manpower is saved by more than 60%, time is reduced by 50%, and the efficiency is increased by more than 65%.
Description
Technical field
The utility model relates to a kind of 750kV current mutual inductor on site accuracy checking device.
Background technology
The existing on-the-spot accuracy verifying attachment equipment volume of 750kV level mutual inductor (electromagnetic type and electronic type) is large, heavy, and required capacity of experiment is large, needs matching used instrument also numerous, a characteristics of compact layout of standing; And, because the geographic position of 750kV transformer station is relatively remote, the communications and transportation difficulty, so the setup time of verification is long, equipment launches at the scene that not only work consuming is consuming time, and operating space is subject to larger restriction, need multiplex's kind personnel to participate in coordinating and could set up the verification environment, testing accuracy is also lower.
The utility model content
The technical problems to be solved in the utility model is, overcomes the above-mentioned defect that prior art exists, and provides a kind of time saving and energy saving, the 750kV current mutual inductor on site accuracy checking device that testing accuracy is high.
The technical solution that its technical matters that solves the utility model adopts is:
A kind of 750kV current mutual inductor on site accuracy checking device, comprise pressure regulator I, pressure regulator II, pressure regulator I one end is electrically connected to current lifting device group I one end, the current lifting device group I other end is electrically connected to compensation condenser group I one end, the compensation condenser group I other end is first via current output terminal mouth, pressure regulator II one end is electrically connected to current lifting device group II one end, the current lifting device group II other end is electrically connected to compensation condenser group II one end, and the compensation condenser group II other end is the second road current output terminal mouth.
Pressure regulator I, current lifting device group I, compensation condenser group I form one group of power supply, pressure regulator II, current lifting device group II, compensation condenser group II form another group power supply, two groups of power supplys can be connected and be used also and can in parallelly use, and the capacity of two groups of power supplys respectively accounts for half of total volume.
The described pressure regulator I other end, the pressure regulator II other end all access 380V voltage, and 380V voltage can obtain by transformer from Substation Station.
Pressure regulator I, compensation condenser group I, pressure regulator II, compensation condenser group II all intercom mutually with the computing machine centralized-control center, according to the experiment size of current, need to regulate the output voltage of pressure regulator I and pressure regulator II, according to the size of experimental loop induction reactance, regulate the capacitor switching of compensation condenser group I and compensation condenser group II, thereby meet the needs of experiment.
Principle of work: civil power 380V voltage access pressure regulator I and pressure regulator II, by pressure regulator I and pressure regulator II, deliver to respectively current lifting device group I, current lifting device group II, compensation condenser group I, compensation condenser group II will be accessed respectively after the electric current increasing degree, by opening-closing capacitor bank, be adjusted to best reactive-load compensation state, make the electric current increasing degree to testing required current value.Situation according to testing ground, first via current output terminal mouth and the second road current output terminal mouth can be together in series, then receive respectively the end of tested CT and an end of standard CT, the other end of tested CT and the other end of standard CT, receive mutual-inductor tester, carry out the accuracy verification; Also first via current output terminal mouth and the second road current output terminal mouth can be together in parallel, then receive respectively the end of tested CT and an end of standard CT, the other end of tested CT and the other end of standard CT, receive mutual-inductor tester, carry out the accuracy verification, directly from mutual-inductor tester, read ratio difference, the phase difference value of tested CT and standard CT, thus draw the amplitude accuracy of tested mutual inductor and angular accuracy whether qualified.
Pressure regulator I, pressure regulator II, current lifting device group I, compensation condenser group I, current lifting device group II, compensation condenser group II can all be fixed in an internal container, realize the 6000A electric current output under vehicle-mounted structure; Total output total volume is 600kVA, (wherein one group of power supply consists of pressure regulator I, current lifting device group I, compensation condenser group I specifically to be divided into the power supply that two groups of independence capacity are 300kVA, another group power supply consists of pressure regulator II, current lifting device group II, compensation condenser group II), two groups of power supplys can be connected and be used also and can in parallelly use, the various environment at flexible adaptation scene; For compensation condenser group I, compensation condenser group II, can carry out the corresponding compensation condenser of switching according to the actual loop induction reactance at scene, reach effective compensation, capacity of experiment is declined to a great extent.
The utility model is arranged on an internal container by pressure regulator, current lifting device, compensation condenser are all orderly, current source and the corresponding intelligent powerless compensation device of 6000A under vehicle-mounted space have been realized, during test, need to not assemble main equipment and relevant line by crane, compensation condenser can be according to actual loop parameter automatic switching simultaneously, effectively compensate, effectively reduce capacity of experiment; Be equipped with the computing machine centralized-control center, complete test/check by center-control, make electronic mutual inductor site test/check light, easy, the mechanical automation degree is high, than traditional test mode, save manpower more than 60%, time shorten 50%, simultaneously efficiency has improved more than 65%.
The utility model compact conformation, be a kind of integrated, vehicle-mounted, small-size light-weight gasifying device, be convenient to transportation, can meet accuracy verification under the CT, ECT total current of on-the-spot 6000A and following current class, to effectively alleviating verifying work intensity, minimizing " window " time that has a power failure takies.
The accompanying drawing explanation
Fig. 1 is the utility model one embodiment current mutual inductor on site accuracy checking device structured flowchart;
Fig. 2 is connected block diagram with tested CT, standard CT, mutual-inductor tester after two-way current output terminal mouth series connection embodiment illustrated in fig. 1;
Fig. 3 be after two-way current output terminal mouth embodiment illustrated in fig. 1 parallel connection with tested CT, standard CT, mutual-inductor tester syndeton block diagram.
Embodiment
The invention will be further described below in conjunction with drawings and Examples.
With reference to Fig. 1, the present embodiment comprises pressure regulator I, pressure regulator II, pressure regulator I one end is electrically connected to current lifting device group I one end, the current lifting device group I other end is electrically connected to compensation condenser group I one end, the compensation condenser group I other end is first via current output terminal mouth, pressure regulator II one end is electrically connected to current lifting device group II one end, and the current lifting device group II other end is electrically connected to compensation condenser group II one end, and the compensation condenser group II other end is the second road current output terminal mouth.
Pressure regulator I, current lifting device group I, compensation condenser group I form one group of power supply, pressure regulator II, current lifting device group II, compensation condenser group II form another group power supply, two groups of power supplys can be connected and be used also and can in parallelly use, and the capacity of two groups of power supplys respectively accounts for half of total volume.
Pressure regulator I, compensation condenser group I, pressure regulator II, compensation condenser group II all intercom mutually with computing machine centralized-control center (not shown), according to the experiment size of current, need to regulate the output voltage of pressure regulator I and pressure regulator II, according to the size of experimental loop induction reactance, regulate the capacitor switching of compensation condenser group I and compensation condenser group II, thereby meet the needs of experiment.
Principle of work: obtain by transformer from Substation Station, the access of two-phase 380V voltage, be divided into two-way, the pressure regulator I is delivered on one tunnel, then deliver to current lifting device group I, by after the electric current increasing degree, sending into compensation condenser group I, be adjusted to best reactive-load compensation state by compensation condenser group I, make the electric current increasing degree to testing required current value, export by first via current output terminal mouth; The pressure regulator II is delivered on another road, then deliver to current lifting device group II, electric current is raised to certain amplitude and sends into compensation condenser group II, be adjusted to best reactive-load compensation state by compensation condenser group II, make the electric current increasing degree to testing required current value, by the second road current output terminal mouth output; Situation according to testing ground, first via current output terminal mouth and the second road current output terminal mouth can be together in series (referring to Fig. 2), then receive respectively the end of tested CT and an end of standard CT, the other end of tested CT and the other end of standard CT, receive mutual-inductor tester, carry out the accuracy verification; Also first via current output terminal mouth and the second road current output terminal mouth can be together in parallel (referring to Fig. 3), then receive respectively the end of tested CT and an end of standard CT, the other end of tested CT and the other end of standard CT, receive mutual-inductor tester, carry out the accuracy verification, directly from mutual-inductor tester, read ratio difference, the phase difference value of tested CT and standard CT, thus draw the amplitude accuracy of tested mutual inductor and angular accuracy whether qualified.
Use the utility model, the accuracy verification of on-the-spot 750kV CT be can automatically complete, accuracy verification under the power frequency of CT, ECT of 750kV and following electric pressure and alien frequencies, digital output verification, volt-ampere characteristic test, transient characterisitics test, power frequency withstand test, harmonic characteristic test, dielectric loss measurement, insulation measurement completed; Simultaneously, also can complete the work such as switching characteristic test, leakage current testing, the test of main transformer winding deformation, direct current resistance m easurem ent of 750kV and following electric pressure.
Claims (2)
1. 750kV current mutual inductor on site accuracy checking device, it is characterized in that, comprise pressure regulator I, pressure regulator II, pressure regulator I one end is electrically connected to current lifting device group I one end, the current lifting device group I other end is electrically connected to compensation condenser group I one end, the compensation condenser group I other end is first via current output terminal mouth, pressure regulator II one end is electrically connected to current lifting device group II one end, the current lifting device group II other end is electrically connected to compensation condenser group II one end, and the compensation condenser group II other end is the second road current output terminal mouth.
2. 750kV current mutual inductor on site accuracy checking device according to claim 1, it is characterized in that, pressure regulator I, current lifting device group I, compensation condenser group I form one group of power supply, pressure regulator II, current lifting device group II, compensation condenser group II form another group power supply, two groups of power supply series connection are used or in parallel the use, and the capacity of two groups of power supplys respectively accounts for half of total volume.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203247581U CN203310990U (en) | 2013-06-06 | 2013-06-06 | On-site accuracy verification device for 750 kV current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203247581U CN203310990U (en) | 2013-06-06 | 2013-06-06 | On-site accuracy verification device for 750 kV current transformer |
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| Publication Number | Publication Date |
|---|---|
| CN203310990U true CN203310990U (en) | 2013-11-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013203247581U Expired - Fee Related CN203310990U (en) | 2013-06-06 | 2013-06-06 | On-site accuracy verification device for 750 kV current transformer |
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| CN (1) | CN203310990U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105425193A (en) * | 2016-01-12 | 2016-03-23 | 江苏省电力公司电力科学研究院 | Extra-high-voltage current transformer verification system |
| CN106249192A (en) * | 2016-09-05 | 2016-12-21 | 中国电力科学研究院 | Detecting system is run at a kind of measuring equipment scene |
| CN107957569A (en) * | 2017-11-27 | 2018-04-24 | 国网福建省电力有限公司 | A kind of building block system experimental rig for field calibration GIS formula current transformers |
| CN110412393A (en) * | 2018-04-28 | 2019-11-05 | 青岛仪迪电子有限公司 | Line build-out method for ac voltage withstanding test |
-
2013
- 2013-06-06 CN CN2013203247581U patent/CN203310990U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105425193A (en) * | 2016-01-12 | 2016-03-23 | 江苏省电力公司电力科学研究院 | Extra-high-voltage current transformer verification system |
| CN106249192A (en) * | 2016-09-05 | 2016-12-21 | 中国电力科学研究院 | Detecting system is run at a kind of measuring equipment scene |
| CN106249192B (en) * | 2016-09-05 | 2020-04-24 | 中国电力科学研究院 | Metering equipment field operation detecting system |
| CN107957569A (en) * | 2017-11-27 | 2018-04-24 | 国网福建省电力有限公司 | A kind of building block system experimental rig for field calibration GIS formula current transformers |
| CN110412393A (en) * | 2018-04-28 | 2019-11-05 | 青岛仪迪电子有限公司 | Line build-out method for ac voltage withstanding test |
| CN110412393B (en) * | 2018-04-28 | 2021-08-31 | 青岛仪迪电子有限公司 | Line compensation method for alternating current withstand voltage test |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131127 Termination date: 20140606 |