CN203811755U - A testing apparatus used for a triple-frequency withstand voltage test for a voltage transformer - Google Patents
A testing apparatus used for a triple-frequency withstand voltage test for a voltage transformer Download PDFInfo
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- CN203811755U CN203811755U CN201420083968.0U CN201420083968U CN203811755U CN 203811755 U CN203811755 U CN 203811755U CN 201420083968 U CN201420083968 U CN 201420083968U CN 203811755 U CN203811755 U CN 203811755U
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- 238000012360 testing method Methods 0.000 title claims abstract description 43
- 239000006096 absorbing agent Substances 0.000 claims abstract description 14
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- 238000012544 monitoring process Methods 0.000 claims abstract description 5
- 238000009434 installation Methods 0.000 claims description 23
- 230000006698 induction Effects 0.000 claims description 2
- 238000002955 isolation Methods 0.000 abstract description 5
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- KYIKRXIYLAGAKQ-UHFFFAOYSA-N abcn Chemical compound C1CCCCC1(C#N)N=NC1(C#N)CCCCC1 KYIKRXIYLAGAKQ-UHFFFAOYSA-N 0.000 description 2
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- 238000005516 engineering process Methods 0.000 description 1
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- 238000013100 final test Methods 0.000 description 1
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Abstract
The utility model discloses a testing apparatus used for a triple-frequency withstand voltage test for a voltage transformer. The testing apparatus comprises a test voltage source with a triple-frequency. The test voltage source with the triple-frequency is in electric connection with three ammeters. The ammeters test a no-load current during an induced withstand voltage. The testing apparatus also comprises a first fuse and a voltage boost isolation transformer which are in series connection in a loop. The voltage boost isolation transformer is in parallel connection with a current surge absorber. The surge absorber is sequentially in electric connection with a filter reactor, three voltmeters and a second fuse. The first fuse and the second carry out protection on external over-currents or short circuits. The voltage boost isolation transformer is used for protecting a voltage signal source. The current surge absorber is used for carrying out voltage release on external over-voltages. The filter reactor is used for carrying out filtering on the loop. The voltmeters are used for monitoring output voltages. The testing apparatus is simple to use and obvious in effect. The testing apparatus enables a utilization rate of some high-voltage test equipment to be greatly raised, thereby saving costs for purchasing new testing apparatuses.
Description
Technical field
The utility model relates to voltage transformer (VT) field, relates in particular to a kind of proving installation of the frequency tripling withstand voltage test for voltage transformer (VT).
Background technology
Voltage transformer (VT) is very important charging equipment in high-pressure system, the common and common charging operation of high voltage bus, so its withstand voltage test also seems extremely important.If the withstand voltage test of voltage transformer (VT) is defective, will bring major hidden danger to high-pressure system, heavy occur PT explosion phenomenon, gently PT self damage after operation a period of time in the process of first power transmission.And electromagnetic potential transformer (electromagnetic unit that comprises capacitance type potential transformer) is to run into magnetic unshakable in one's determination close higher in the situation that, can not carry out power frequency withstand test, and need to carry out frequency tripling withstand voltage test.
If purchase specially its somewhat expensive of the withstand voltage device of a set of frequency tripling for the test of on-the-spot 10KV voltage transformer (VT), and the utilization factor of testing equipment is not high, has virtually increased the investment of fixed corporate assets.
Utility model content
The utility model provides a kind of proving installation of the frequency tripling withstand voltage test for voltage transformer (VT), and this proving installation is simple to operate, has saved the cost of purchasing new testing equipment, described below:
For a proving installation for the frequency tripling withstand voltage test of voltage transformer (VT), described proving installation comprises: the trial voltage source of frequency tripling,
The trial voltage source of described frequency tripling is electrically connected to 3 reometers, and no-load current when described reometer test induction is withstand voltage, is serially connected with in voltage circuit;
Described proving installation also comprises: be serially connected with the first fuse in loop, the isolating transformer that boosts, described in the isolating transformer surge absorber that is connected in parallel that boosts, described surge absorber is electrically connected to filter reactor, 3 voltage tables and the second fuse successively;
Described the first fuse and described the second fuse are protected outside excess current or short circuit; The described isolating transformer that boosts is for the protection of voltage signal source; Described surge absorber is for carrying out pressure release to exterior overvoltage; Described filter reactor is for carrying out filtering to loop; Described voltage table is used for monitoring output voltage.
Described proving installation also comprises: power amplifier,
Described power amplifier is electrically connected to the trial voltage source of described frequency tripling, and described power amplifier amplifies voltage signal source power, and is electrically connected to respectively 3 reometers.
The beneficial effect of the technical scheme that the utility model provides is: this proving installation uses simple, and successful, greatly improves the utilization factor of some high-tension testing apparatus, has saved the cost of purchasing new testing equipment; And this proving installation has been realized one-machine-multi-function, there is good economic benefit and social benefit.
Accompanying drawing explanation
Fig. 1 is the electrical schematic diagram for the proving installation of the frequency tripling withstand voltage test of voltage transformer (VT);
Fig. 2 is the vertical view for the proving installation of the frequency tripling withstand voltage test of voltage transformer (VT).
In accompanying drawing, the list of parts of each label representative is as follows:
P: frequency tripling voltage signal source; FU1: the first fuse;
FU2: the second fuse; T: isolating transformer boosts;
L: filter reactor; A: reometer;
PV: voltage table; RL: surge absorber;
W: AC power amplifier.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, below the utility model embodiment is described in further detail.
In order to save the cost of purchasing new testing equipment, simplify test operation simple, the utility model embodiment provides a kind of proving installation of the frequency tripling withstand voltage test for voltage transformer (VT), the present embodiment combines specializing in some instrument and meters of high-potting work, developed a kind of novel easy device, described below:
Referring to Fig. 1 and Fig. 2, this proving installation comprises: the trial voltage source P(of frequency tripling comprises: A phase, B phase and C phase, frequency adjustable extent is 0-150HZ) test voltage signal source is provided, the trial voltage source P of frequency tripling is electrically connected to power amplifier W, power amplifier W amplifies voltage signal source power, and is electrically connected to respectively 3 reometer A, and reometer A tests it and responds to no-load current when withstand voltage, be serially connected with in voltage circuit, real-time monitoring is provided.
This proving installation also comprises: be serially connected with the first fuse FU1 in loop, the isolating transformer T that boosts, surge absorber RL, filter reactor L, 3 voltage table PV and the second fuse FU2.
Wherein, the first fuse FU1 and the second fuse FU2 protect outside excess current or short circuit; The isolating transformer T that boosts, its voltage ratio is divided into three gears, is 1:1,1:2 and 1:3, can be according to the actual voltage withstand class adjustment in scene, this element makes to be formed electrical isolation by testing equipment and frequency tripling voltage source signal, protection voltage signal source; Surge absorber RL, carries out pressure release to exterior overvoltage, prevents superpotential; Filter reactor L, carries out filtering to loop, prevents spread of voltage and pollutes signal source; Voltage table PV, at signal outgoing side and connect voltage table, monitors output voltage.
During specific implementation, power amplifier W installs at voltage signal source outgoing side, if signal voltage source power enough, can not use.
The principle of work of this proving installation is described below in conjunction with concrete device:
By Onlly 460 type relay protection instrument, (this device can be exported maximum voltage 120V to this device; maximum current 20A, frequency 150HZ), 3 reometer A(ranges are 10A), 3 the first fuse FU1(rated current are 2A), the isolating transformer T(no-load voltage ratio of boosting is 1:6), surge absorber RL(continuous running voltage is 420V), filter reactor L, 3 voltage table PV(ranges be 500V), 3 the second fuse FU2(rated current are 6A) form.
By Onlly 460 type relay protections, protecting instrument output frequency is 150HZ, the voltage that 0-120V is adjustable (can select according to the voltage withstand class of voltage transformer (VT)), this output voltage is by 3 reometer A, no-load current when reometer can show withstand voltage test, the first fuse FU1 protects this output voltage source, the isolating transformer T that boosts is to the amplification of boosting of this output voltage source, make to reach the requirement of pressure testing voltage, output voltage source is played to buffer action simultaneously, make trial voltage and output voltage carry out physical isolation, with the tested back electromotive force of testing PT of anti-tamper to output voltage source apparatus.The isolating transformer T output terminal that boosts a surge absorber RL in parallel, this device can effectively be protected the isolating transformer T that boosts, and can stabilize the damage of output voltage output instant high-voltage to the isolating transformer T that boosts.Filter reactor L can carry out filtering to output voltage, makes pressure testing voltage steadily reliable.3 voltage table PV monitor output voltage.The second fuse FU2 is the protection to out-put supply.Final test voltage ABCN is connected with the ABC of tested PT, and so far this device just can meet the requirement of PT withstand voltage test completely.
During practical application, this proving installation facility simple to operate, the outgoing side ABCN(of this proving installation can single-phasely be used) with by trial voltage mutual inductor, be connected, first regulate the Voltage-output frequency of P, when frequency adjustment is during to trial value, fix this frequency constant, slow boosted voltage value, at boosted voltage, be worth in process, in monitoring circuit, the value of reometer A and voltage table PV changes, and when voltage table PV displayed value rises to trial voltage value, stops.
The utility model embodiment to the model of each device except do specified otherwise, the model of other devices does not limit, as long as can complete the device of above-mentioned functions, all can.
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, above-mentioned the utility model embodiment sequence number, just to describing, does not represent the quality of embodiment.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (2)
1. for a proving installation for the frequency tripling withstand voltage test of voltage transformer (VT), it is characterized in that, described proving installation comprises: the trial voltage source of frequency tripling,
The trial voltage source of described frequency tripling is electrically connected to 3 reometers, and no-load current when described reometer test induction is withstand voltage, is serially connected with in voltage circuit;
Described proving installation also comprises: be serially connected with the first fuse in loop, the isolating transformer that boosts, described in the isolating transformer surge absorber that is connected in parallel that boosts, described surge absorber is electrically connected to filter reactor, 3 voltage tables and the second fuse successively;
Described the first fuse and described the second fuse are protected outside excess current or short circuit; The described isolating transformer that boosts is for the protection of voltage signal source; Described surge absorber is for carrying out pressure release to exterior overvoltage; Described filter reactor is for carrying out filtering to loop; Described voltage table is used for monitoring output voltage.
2. the proving installation of a kind of frequency tripling withstand voltage test for voltage transformer (VT) according to claim 1, is characterized in that, described proving installation also comprises: power amplifier,
Described power amplifier is electrically connected to the trial voltage source of described frequency tripling, and described power amplifier amplifies voltage signal source power, and is electrically connected to respectively 3 reometers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420083968.0U CN203811755U (en) | 2014-02-26 | 2014-02-26 | A testing apparatus used for a triple-frequency withstand voltage test for a voltage transformer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420083968.0U CN203811755U (en) | 2014-02-26 | 2014-02-26 | A testing apparatus used for a triple-frequency withstand voltage test for a voltage transformer |
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| CN203811755U true CN203811755U (en) | 2014-09-03 |
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| CN201420083968.0U Expired - Lifetime CN203811755U (en) | 2014-02-26 | 2014-02-26 | A testing apparatus used for a triple-frequency withstand voltage test for a voltage transformer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108983061A (en) * | 2018-10-11 | 2018-12-11 | 河南省计量科学研究院 | A kind of three times frequency generator and three times frequency generator pressure test calibration method |
| CN109116088A (en) * | 2018-10-16 | 2019-01-01 | 国网青海省电力公司西宁供电公司 | A kind of high precision electro electromagnetic type voltage transformer no-load current test device |
-
2014
- 2014-02-26 CN CN201420083968.0U patent/CN203811755U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108983061A (en) * | 2018-10-11 | 2018-12-11 | 河南省计量科学研究院 | A kind of three times frequency generator and three times frequency generator pressure test calibration method |
| CN109116088A (en) * | 2018-10-16 | 2019-01-01 | 国网青海省电力公司西宁供电公司 | A kind of high precision electro electromagnetic type voltage transformer no-load current test device |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: TIANJIN XINBIN ENGINEERING TECHNOLOGY MONITORING C Free format text: FORMER OWNER: TIANJIN MCC20 CONSTRUCTION CO., LTD. Effective date: 20150713 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150713 Address after: 300301, room 2284-101, building A, China Merchants Road, No. ten bridge, Dongli District, Tianjin Patentee after: TIANJIN XINBIN ENGINEERING TECHNOLOGY INSPECTION CO.,LTD. Address before: 300301 Tianjin Dongli District flawless Street Patentee before: TIANJIN MCC 20 CONSTRUCTION Co.,Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20140903 |
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| CX01 | Expiry of patent term |