CN201535804U - Power-frequency overvoltage protection tester of reactive power compensation device - Google Patents
Power-frequency overvoltage protection tester of reactive power compensation device Download PDFInfo
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- CN201535804U CN201535804U CN2009202213492U CN200920221349U CN201535804U CN 201535804 U CN201535804 U CN 201535804U CN 2009202213492 U CN2009202213492 U CN 2009202213492U CN 200920221349 U CN200920221349 U CN 200920221349U CN 201535804 U CN201535804 U CN 201535804U
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Abstract
The utility model relates to a power-frequency overvoltage protection tester of a reactive power compensation device, which is mainly characterized by comprising a signal sampling and tracking circuit, a plus 5V power supply board, a testing control and display circuit, a timing display circuit, a boosted circuit and a current output control circuit, wherein the input end of the signal sampling and tracking circuit is connected with the end output signal of the compensation device, the two output ends thereof are respectively connected with the timing display circuit and the testing control and display circuit, the power supply input end of the testing control and display circuit is connected with the plus 5V power supply board, and the two output ends thereof are respectively connected with the boosted circuit and the timing display circuit; the input ends of the boosted circuit and the current output control circuit are respectively connected with a three-phase alternating-current power supply, and the output ends thereof are respectively connected with a voltage output end, an alternating-current digital voltmeter and a current output end. The utility model has the function of automatically testing the reactive power compensation device and has the characteristics of high testing precision, stable performance, convenient use, wide application range and the like.
Description
Technical field
The utility model belongs to low-pressure electric controlled distribution industry detection technique field, especially a kind of reactive power compensator power-frequency overvoltage protection tester.
Background technology
On each regional power grid reactive power compensation device for capacitor has been installed generally at home, thereby has been reduced the grid line loss in the electric system, adjusted reactive voltage, improved power factor, reached the power and energy saving effect.Along with the installed capacity of reactive power compensation device for capacitor in electrical network increases year by year; brought huge benefit for the economical operation of electric system; in order to guarantee the normal operation of electrical network; there is strict demand in country to the power-frequency overvoltage protection of reactive power compensation device for capacitor; wherein the power-frequency overvoltage test to capacitor is listed in the state compulsion test item, also is simultaneously the project test that manufacturer must do when dispatching from the factory.According to low-pressure electric controlled distribution industry standard regulation, be to the power-frequency overvoltage protection requirement of devices such as automatic control switching: at the voltage that is applied to device during greater than 1.1 times of rated voltages, should be with the capacitor complete resection in 1 minute.
At present, also be not exclusively used in the detecting instrument of Electric capacity compensation device power-frequency overvoltage protection.The manufacturer of reactive power compensation device for capacitor uses stopwatch manually to drop into capacitor usually and carries out manual time-keeping when carrying out delivery test, and its accuracy is relatively poor; Domestic detection department also is the method above utilizing basically, difference is: utilize the stopwatch manual time-keeping under the device auto state, it is the bright start-up by hand stopwatch of superpotential pilot lamp on the naked eyes viewing apparatus, stop stopwatch by capacitor complete resection on the naked eyes viewing apparatus is manual again, the accuracy of its test data and dispersiveness are very big.In sum, prior art is the overvoltage protection performance of test capacitors reactive power compensator exactly, therefore presses for a kind of equipment that protection is measured automatically at the reactive power compensator power-frequency overvoltage.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, provide a kind of reasonable in design, test is accurate, easy to operate and reactive power compensator power-frequency overvoltage protection tester that can self-clocking.
The utility model solves its technical matters and is achieved through the following technical solutions:
A kind of reactive power compensator power-frequency overvoltage protection tester, comprise the circuit in casing and the casing, circuit in the casing comprises signal sampling and tracking circuit, + 5V power panel, test control and display circuit, timing displaing circuit, booster circuit and electric current output control circuit, the input end of signal sampling and tracking circuit is connected with compensation system dead end output signal, one output terminal of signal sampling and tracking circuit is connected to an input end of timing displaing circuit, another output terminal of signal sampling and tracking circuit is connected with test control and display circuit, the power input of test control and display circuit is connected with+5V power panel, and test is controlled and two output terminals of display circuit connect booster circuit and timing displaing circuit respectively; The input end of booster circuit and electric current output control circuit is connected with three-phase alternating-current supply respectively, and the output terminal of booster circuit is connected respectively to voltage output end and AC digital voltmeter, and the output terminal of electric current output control circuit is connected to current output terminal.
And, between the input end of booster circuit, electric current output control circuit and three-phase alternating-current supply, connect a line options control circuit mutually.
And described sampling and tracking circuit comprise first relay, and the input end of this relay is connected with the compensation system dead end output signal of static type, and the gauge tap of this relay is connected respectively on timing displaing circuit and test control and the display circuit.
And, described sampling and tracking circuit comprise a photoelectrical coupler, the input end of this photoelectrical coupler is connected with the compensation system dead end output signal of dynamic type, and the gauge tap of this photoelectrical coupler is connected respectively on timing displaing circuit and test control and the display circuit.
And described test control and display circuit comprise and being connected in parallel on+following circuit between 5V power panel and the ground wire: superpotential start key and coupled second relay in parallel, superpotential pilot lamp; Second relay, superpotential pilot lamp and the 3rd relay of mute time key and coupled parallel connection; The gauge tap of sampling and tracking circuit.
And described electric current output control circuit is connected and composed by resistance-capacitance circuit and transformer.
And described booster circuit is made of the contact switch of second relay of test control and display circuit and coupled transformer.
And described timing displaing circuit is connected and composed by the gauge tap of gauge tap, test control and the display circuit of digital display timer, signal sampling and tracking circuit.
Advantage of the present utility model and beneficial effect are:
1. this tester boosts, gathers compensation system dead end output signal by the test control that is provided with in the casing and display circuit, signal sampling and tracking circuit, booster circuit etc. to AC power, realization was measured automatically to overvoltage signal, the mute time of reactive power compensator, can be accurately, on the casing front panel, show intuitively, have automaticity height, characteristic of accurate test.
2. this tester can be realized single-phase reactive power compensator, three-phase reactive power compensator by three-phase/single-phase selector switch and static state/dynamic dead end output port, multiple reactive power compensators such as static reactive power compensation device, dynamic reactive compensation device are tested, the single-phase voltage adjustable extent is 220V～300V, three-phase superpotential adjustable extent is 380V～460V, the output current phase place can be selected respectively to lag behind, simulate electrical network perception, capacitive in advance, has characteristics such as the scope of application is extensive, feature richness.
3. the booster circuit of this tester adopts the single-phase step-up mode, and adopts the capacitance-resistance phase shift and use transformer isolation to amplify in the electric current output control circuit, have stable performance, volume little, do not generate heat, reduce characteristics such as loss.
4, the utlity model has the function of automatically reactive power compensator being tested automatically, have measuring accuracy height, stable performance, easy to use, characteristics such as the scope of application extensive, feature richness, filled up one in domestic low-voltage electrical apparatus switchgear assembly detection technique field and detected blank.
Description of drawings
Fig. 1 is a casing front panel synoptic diagram of the present utility model;
Fig. 2 is a casing rear panel synoptic diagram of the present utility model;
Fig. 3 is a test circuit block scheme of the present utility model;
Fig. 4 is a circuit diagram of the present utility model.
Embodiment
The utility model is described in further detail below by specific embodiment.
A kind of reactive power compensator power-frequency overvoltage protection tester comprises the circuit in casing and the casing.As shown in Figure 1, the front panel 1 of casing is provided with voltage display screen 2, superpotential pilot lamp 3, superpotential adjusting knob 4, time reset button 5, excision timing display screen 6, excision timing pilot lamp 7, mute time key 8, superpotential start key 9, superpotential stop key 10, Ic lead-lag options button 11, Ib lead-lag options button 12, Ia lead-lag options button 13, phase voltage/line voltage options button 14, and the interior circuit of above-mentioned demonstration and key and casing is connected.As shown in Figure 2, the rear panel 14 of casing is provided with dynamic type controller dead end output signal U+and X port one 5, static type controller dead end output signal X port one 6; Three-phase current output terminal N, IA, IB and IV port one 7, three-phase voltage output terminal N, UA, UB and UC port and common port Us18, insurance 4A, 0.5A port one 9, power switch 20 and three-phase alternating-current supply input end 21, the interior control circuit of above-mentioned port and casing is connected.
As shown in Figures 3 and 4, circuit in the casing comprises signal sampling and tracking circuit, + 5V power panel, test control and display circuit, timing displaing circuit, phase line options control circuit, booster circuit and electric current output control circuit, the input end of signal sampling and tracking circuit is connected with compensation system dead end output signal, one output terminal of signal sampling and tracking circuit is connected to an input end of timing displaing circuit, another output terminal of signal sampling and tracking circuit is connected with test control and display circuit, the power input of test control and display circuit is connected with+5V power panel, and test is controlled and two output terminals of display circuit connect booster circuit and timing displaing circuit respectively; The input end of phase line options control circuit is connected with three-phase alternating-current supply, the output terminal of this phase line options control circuit is connected with the input end of the input end of booster circuit, electric current output control circuit, the output terminal of booster circuit is connected respectively to voltage output end and AC digital voltmeter, the output terminal of electric current output control circuit is connected to current output terminal, the magnitude of voltage that this AC digital voltmeter can be exported.
Sampling and tracking circuit comprise first relay J 1, the input end of relay J 1 is connected with the compensation system dead end output signal of static type, the gauge tap of this relay is connected respectively on timing displaing circuit and test control and the display circuit, and the dead end output signal of the reactive power compensator of static type can be gathered and follow the tracks of to this partial circuit.This sampling and tracking circuit also comprise a photoelectrical coupler, the input end of this photoelectrical coupler is connected with the compensation system dead end output signal of dynamic type, the gauge tap of this photoelectrical coupler is connected respectively on timing displaing circuit and test control and the display circuit or the dead end output signal of the reactive power compensator of dynamic, and the dead end output signal of the reactive power compensator of dynamic type can be gathered and follow the tracks of to this partial circuit.
Test control and display circuit are included in the following circuit between parallel connection+5V power panel and the ground wire: superpotential start key AJ2 and coupled second relay J 2, superpotential pilot lamp in parallel; Mute time key AJ3 and coupled parallel connection second relay J 2, superpotential pilot lamp and the 3rd relay J 3; The gauge tap of sampling and tracking circuit.
The electric current output control circuit is connected and composed by resistance-capacitance circuit and transformer, and the phase shift after-current amplifies the leading or lagging current of generation by transformer isolation.This electric current output control circuit is connected with Ic lead-lag options button, Ib lead-lag options button, the Ia lead-lag options button of casing setting respectively, selects the leading or lagging current of output out of phase by above-mentioned button.
Booster circuit is made of the contact switch of second relay of test control and display circuit and coupled transformer, and booster circuit carries out boost in voltage by the superpotential adjusting knob that is provided with on the rotation casing after superpotential start key AJ2 presses.
Timing displaing circuit is connected and composed by the gauge tap of gauge tap, test control and the display circuit of digital display timer, signal sampling and tracking circuit, the digital display timer is under the control of signal sampling and tracking circuit, test control and display circuit, and the timing of carrying out the mute time shows.
The course of work of the present utility model is as follows:
This reactive power compensator power-frequency overvoltage protection tester can be tested the reactive power compensator of three-phase, single-phase, dynamic type, static type.Be that 10 tunnel compensation system is an example with test input single phase poaer supply duty static compensation below, the course of work of this tester be described:
The measuring process of overvoltage protection value is: at first the three-phase power input end at this tester connects the three-phase four-wire system AC power; the tested device input voltage is connected on the three-phase voltage output terminal UB-N end of this tester casing rear panel; the tested device input current is connected on three-phase current output terminal IB end, and the dead end of tested device (the 10 tunnel) output signal is connected on the static type X terminal of this tester casing rear panel.Power turn-on K switch 2, relay J 11 adhesives, its three normally open contacts close the tester power connection.K1 is combined on the phase voltage with the front panel voltage-selected switch, J12 discharges the normally closed contact of J12 and connects, this moment, voltage window showed phase voltage 220V, IB phase current phase place selector switch KI is combined in Ib lag position (current phase lagging voltage phase place), press superpotential stop key (voltage stop key, the superpotential start key, the mute time key constitutes key switch, when the superpotential stop key is pressed, being equivalent to superpotential start key AJ2 and mute time key AJ3 disconnects), this moment, tested device began to drop into capacitor by the road, after the whole throwings of No. 10 capacitors of tested device are full, press the superpotential start key, relay J 2 adhesives, the J2 normally opened contact is connected step-up transformer T2, this moment, the superpotential pilot lamp was bright, regulate superpotential knob T1 pressure regulator, the output voltage U B of this tester begins to rise, and finds out reading intuitively from digital voltmeter.When voltage rises to tested device overvoltage protection pilot lamp when bright, tested device begins by road excision capacitor, and this moment, the overvoltage value of tested device was exactly the overvoltage protection value that we need measure.
The time measurement process of excision capacitor is as follows:
In the above under the situation of the superpotential adjusting knob invariant position of tester, press the superpotential stop key, tested device begins to drop into again capacitor, after the whole throwings of No. 10 capacitors are full, directly press mute time key AJ3 relay J 2 this moment, the J3 adhesive, the digital display timer picks up counting, the normally open contact of relay J 3 and J1 should close, J3 has closed the dead end (10 tunnel) output signal of relay J 1 signal from tested device, this moment, the tested device capacitor was all thrown when expiring, the 10 tunnel output 220V power supply, so relay J 1 adhesive, tested device begins also timing simultaneously of superpotential when pressing mute time key AJ3, tested device begins by road excision capacitor, when the capacitor of last road of excision, relay J 1 discharges, and timer stops timing.
When being dynamically control for tested device, the course of work is with static the same, it is dead end sample of signal difference, dynamically the dead end feedback signal of type compensation system is direct current 12V, output 12V direct supply after dead end capacitor input, isolate by circuit photoelectricity, make F1, F2 conducting J1* adhesive control timer work.
For tested device sampling power supply is three phase times, for a minute compensation requires (A, B, C be compensation respectively mutually, and which phase which needs to mend mutually).So three-phase compensation be equivalent to three single-phase, so when the three-phase superpotential three-phase and be a phase (B phase), be allocated to the phase voltage position by voltage-selected switch K1, J12 discharges, and makes output become three single-phase outputs.Other courses of work are with single-phase the same.
When being single-phase 380V for tested device sampling power supply, AB phase voltage C phase current is allocated to line voltage with voltage-selected switch K1, the J12 adhesive, and output line voltage AB phase changes the B phase voltage when boosting, and the AB phase voltage rises simultaneously.
Embodiment described in the utility model is illustrative; rather than it is determinate; therefore the utility model is not limited to the embodiment described in the embodiment; every by those skilled in the art according to other embodiments that the technical solution of the utility model draws, belong to the scope of the utility model protection equally.
Claims (8)
1. a reactive power compensator power-frequency overvoltage is protected tester, it is characterized in that: comprise the circuit in casing and the casing, circuit in the casing comprises signal sampling and tracking circuit, + 5V power panel, test control and display circuit, timing displaing circuit, booster circuit and electric current output control circuit, the input end of signal sampling and tracking circuit is connected with compensation system dead end output signal, one output terminal of signal sampling and tracking circuit is connected to an input end of timing displaing circuit, another output terminal of signal sampling and tracking circuit is connected with test control and display circuit, the power input of test control and display circuit is connected with+5V power panel, and test is controlled and two output terminals of display circuit connect booster circuit and timing displaing circuit respectively; The input end of booster circuit and electric current output control circuit is connected with three-phase alternating-current supply respectively, and the output terminal of booster circuit is connected respectively to voltage output end and AC digital voltmeter, and the output terminal of electric current output control circuit is connected to current output terminal.
2. reactive power compensator power-frequency overvoltage according to claim 1 protection tester is characterized in that: connect a line options control circuit mutually between the input end of booster circuit, electric current output control circuit and three-phase alternating-current supply.
3. reactive power compensator power-frequency overvoltage protection tester according to claim 1; it is characterized in that: described sampling and tracking circuit comprise first relay; the input end of this relay is connected with the compensation system dead end output signal of static type, and the gauge tap of this relay is connected respectively on timing displaing circuit and test control and the display circuit.
4. according to claim 1 or 3 described reactive power compensator power-frequency overvoltage protection testers; it is characterized in that: described sampling and tracking circuit comprise a photoelectrical coupler; the input end of this photoelectrical coupler is connected with the compensation system dead end output signal of dynamic type, and the gauge tap of this photoelectrical coupler is connected respectively on timing displaing circuit and test control and the display circuit.
5. reactive power compensator power-frequency overvoltage according to claim 1 protection tester is characterized in that: described test control and display circuit comprise and being connected in parallel on+following circuit between 5V power panel and the ground wire: superpotential start key and coupled second relay in parallel, superpotential pilot lamp; Second relay, superpotential pilot lamp and the 3rd relay of mute time key and coupled parallel connection; The gauge tap of sampling and tracking circuit.
6. reactive power compensator power-frequency overvoltage protection tester according to claim 1, it is characterized in that: described electric current output control circuit is connected and composed by resistance-capacitance circuit and transformer.
7. reactive power compensator power-frequency overvoltage protection tester according to claim 1, it is characterized in that: described booster circuit is made of the contact switch of second relay of test control and display circuit and coupled transformer.
8. reactive power compensator power-frequency overvoltage protection tester according to claim 1 is characterized in that: described timing displaing circuit is connected and composed by the gauge tap of gauge tap, test control and the display circuit of digital display timer, signal sampling and tracking circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202213492U CN201535804U (en) | 2009-10-15 | 2009-10-15 | Power-frequency overvoltage protection tester of reactive power compensation device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202213492U CN201535804U (en) | 2009-10-15 | 2009-10-15 | Power-frequency overvoltage protection tester of reactive power compensation device |
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| CN201535804U true CN201535804U (en) | 2010-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009202213492U Expired - Fee Related CN201535804U (en) | 2009-10-15 | 2009-10-15 | Power-frequency overvoltage protection tester of reactive power compensation device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI460454B (en) * | 2013-02-27 | 2014-11-11 | Chicony Power Tech Co Ltd | Over voltage protection testing apparatus |
| CN104808085A (en) * | 2015-04-21 | 2015-07-29 | 诸暨市东白电力设备制造有限公司 | Low-voltage reactive compensation overvoltage protection test circuit and overvoltage protection test method |
| CN105929292A (en) * | 2016-07-13 | 2016-09-07 | 国网山东省电力公司东营供电公司 | Three-phase overvoltage protection device comprehensive detection apparatus and method |
| CN110412392A (en) * | 2019-09-10 | 2019-11-05 | 珠海市可利电气有限公司 | A kind of reactive compensation automatic switching detection device and its detection method |
-
2009
- 2009-10-15 CN CN2009202213492U patent/CN201535804U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI460454B (en) * | 2013-02-27 | 2014-11-11 | Chicony Power Tech Co Ltd | Over voltage protection testing apparatus |
| CN104808085A (en) * | 2015-04-21 | 2015-07-29 | 诸暨市东白电力设备制造有限公司 | Low-voltage reactive compensation overvoltage protection test circuit and overvoltage protection test method |
| CN105929292A (en) * | 2016-07-13 | 2016-09-07 | 国网山东省电力公司东营供电公司 | Three-phase overvoltage protection device comprehensive detection apparatus and method |
| CN110412392A (en) * | 2019-09-10 | 2019-11-05 | 珠海市可利电气有限公司 | A kind of reactive compensation automatic switching detection device and its detection method |
| CN110412392B (en) * | 2019-09-10 | 2024-04-02 | 珠海市可利电气有限公司 | Reactive compensation automatic switching detection device and detection method thereof |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100728 Termination date: 20151015 |
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| EXPY | Termination of patent right or utility model |