CN203772991U - Generator rotor overvoltage protector tester - Google Patents
Generator rotor overvoltage protector tester Download PDFInfo
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- CN203772991U CN203772991U CN201420149405.7U CN201420149405U CN203772991U CN 203772991 U CN203772991 U CN 203772991U CN 201420149405 U CN201420149405 U CN 201420149405U CN 203772991 U CN203772991 U CN 203772991U
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- pressure regulator
- tester
- direct current
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- 230000001012 protector Effects 0.000 title abstract 4
- 238000002955 isolation Methods 0.000 claims abstract description 33
- 238000001914 filtration Methods 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 239000003990 capacitor Substances 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 238000012360 testing method Methods 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 3
- 238000013461 design Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000005347 demagnetization Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009993 protective function Effects 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)
Abstract
The utility model relates to a generator rotor overvoltage protector tester. The generator rotor overvoltage protector tester is characterized in that the generator rotor overvoltage protector tester comprises an isolation voltage regulator (TB). The two input ends of the isolation voltage regulator (TB) are connected with the commercial power through a switch (K1), and the two output ends of the isolation voltage regulator (TB) are connected with the two input ends of an AC/DC output selection switch (K2), wherein the two output ends of the AC/DC output selection switch (K2) serve as AC output test terminals, and the other two output ends of the AC/DC output selection switch (K2) serve as DC output test terminals after being connected with a rectification filter circuit. According to the tester in the utility model, tester components are arranged in a box body, a convenient and reasonable display panel for controlling operation is designed at the upper portion of the box body; a liftable upper cover is designed on the box body; after the tester is used, a complete box is formed by closing the upper cover, thereby facilitating moving and maintaining the box; and the tester has good waterproof, moistureproof and shockproof effects.
Description
Technical field
The utility model relates to a kind of generator amature overvoltage protection tester.
Background technology
Along with the fast development of Chinese national economy, the science and technology progress of constantly bringing forth new ideas, living standards of the people are constantly improved, and electric power is as one of the infrastructure of economic life development and government utility, and power requirement is also at rapid growth.Particularly large capacity, the continuous operation of high parameter genset and the extensive application of novel electricity generation technology over nearly 10 years, the unit operation situation of generating electricity by way of merging two or more grid systems is increasing on the impact of power system safety and stability operation.
For the safety and stability long-term operation of electrical network, require generating set must ensure the general level of the health, 1., when the inside of genset or generator outlet end breaks down and when orderly closedown, the transient overvoltage that the sudden change of exciting current causes at rotor winding two ends and generator amature often suffers following several superpotential infringement as the critical piece of generator:; 2., genset is in operation while being subject to larger disturbance, the synchronous generator of static excitation may produce forward superpotential or inverse overvoltage on rotor field coil; 3., there is suddenly-applied short circuit, step-out, non-Switching Synchronization, demagnetization, open-phase operation in generator, the armature reaction of generator may make the superpotential that rotor field coil internal induction is very high; 4., the shutoff of thyristor makes stationary silicon controlled field power supply occur commutation peak overvoltage; 5. atmospheric over-voltage, electric grid operating superpotential that, AC passes over by exciting transformer and air gap.
Once generator amature is subject to superpotential infringement, will cause rotor inter-turn short circuit, when serious, will threaten the safety of generator unit stator and transformer.In order to prevent the superpotential generation of above-mentioned several generator amature; now domestic many generators are all equipped with import original-pack and the excitation unit of assembling and subsidiary generator rotor de-excitation and overvoltage protection (jumper), and it is more and more higher that it occupies ratio.Its security has received increasing concern; if according to national requirement; demagnetization and overvoltage protection (jumper) must meet numerous relevant codes, and all will regularly carry out the performance test of overvoltage device to the generator of operation.
Utility model content
The purpose of this utility model is to provide a kind of simple in structure, easy to use and safety, low being easy to of cost realized and widely used generator amature overvoltage protection tester.
A kind of generator amature overvoltage protection tester; its special feature is: comprise isolation pressure regulator; two input ends of this isolation pressure regulator connect civil power by switch; and two output terminal is connected with two input ends of an alternating current-direct current output selector switch; two output terminals of this alternating current-direct current output selector switch are as exchanging output calibrating terminal, and two other output terminal of this alternating current-direct current output selector switch is exported calibrating terminal as direct current after being connected with current rectifying and wave filtering circuit.
Wherein current rectifying and wave filtering circuit is made up of bridge rectifier circuit and capacitor filter.
Wherein between switch and isolation pressure regulator, be connected by relay latching circuit.
Wherein relay latching circuit comprises the coil of switch knob, opening button and the latching relay of series connection, this three's two ends are connected in parallel on the two ends of described switch, wherein the first normally opened contact of this latching relay is connected in parallel on switch knob two ends, and the second normally opened contact of this latching relay and the 3rd normally opened contact are connected on respectively between switch and isolation pressure regulator.
The coil that is wherein in series with overcurrent relay between input end of alternating current-direct current output selector switch and an output terminal of isolation pressure regulator, the first normally closed contact of this overcurrent relay is connected with the coil of latching relay.
Wherein also comprise zero position protection travel switch; the normal opened contact of this zero position protection travel switch is arranged on the movable zero-bit of the carbon brush place on isolation pressure regulator top; and the output terminal of this zero position protection travel switch is connected with the coil of latching relay, thereby make to isolate the closed conducting of output terminal of pressure regulator zero position protection travel switch in the time of zero-bit.
Wherein between two output terminals of described isolation pressure regulator, be parallel with the first voltage table, and one of them output terminal is also connected with the first reometer.
Between two other output terminal as direct current output calibrating terminal of wherein said alternating current-direct current output selector switch, be also parallel with second voltage table, and one of them output terminal is also connected with the second reometer.
In tester of the present utility model, instrument components and parts are disposed and are arranged in a casing, casing upper design convenient and reasonable control operation display panel, casing has also designed the upper cover that can start, the instrument upper cover that closes after finishing using, become a complete chest, be convenient to copy mechanically and take care of, there is good waterproof, protection against the tide, shockproof effect; When instrument uses, take power equipment scene, raise case lid, connect according to test method the experiment work that test wire just can safe ready completes generator amature overvoltage protection efficiently, bring great convenience to power test commissioning staff.And this tester can also exchange as the alternating current-direct current 0-700 volt in industrial electric laboratory, 0-1000 lies prostrate continuous regulated power supply and uses, or uses as power cable open fault, earth fault detection as industrial electric worker.
Brief description of the drawings
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
As shown in Figure 1, the utility model is a kind of generator amature overvoltage protection tester, comprise isolation pressure regulator TB, two input ends of this isolation pressure regulator TB can adopt doubly-linked tumbler switch by (always) K switch 1() connect civil power, and two output terminal and alternating current-direct current output selector switch K2(can adopt there are two of two working positions and enter four and go out switch) two input ends be connected, two output terminals of this alternating current-direct current output selector switch K2 are as exchanging output calibrating terminal, and two other output terminal of this alternating current-direct current output selector switch K2 is exported calibrating terminal as direct current after being connected with current rectifying and wave filtering circuit, the wave filter that the bridge rectifier circuit that this current rectifying and wave filtering circuit is made up of four diodes and single electric capacity form forms.
Wherein between K switch 1 and isolation pressure regulator TB, be connected by relay latching circuit, this relay latching circuit comprises switch knob HN, the opening button TN of series connection and the coil of latching relay CJ, this three's two ends are connected in parallel on the two ends of described K switch 1, wherein the first normally opened contact of this latching relay CJ is connected in parallel on switch knob HN two ends, and the second normally opened contact of this latching relay CJ and the 3rd normally opened contact are connected on respectively between K switch 1 and isolation pressure regulator TB.
The coil that is wherein in series with overcurrent relay IJ between input end of alternating current-direct current output selector switch K2 and an output terminal of isolation pressure regulator TB, the first normally closed contact of this overcurrent relay IJ is connected with the coil of latching relay CJ.Also comprise zero position protection travel switch XC; the normal opened contact (being trigger end) of this zero position protection travel switch XC is arranged on the zero-bit place of isolation pressure regulator TB; and the output terminal of this zero position protection travel switch XC is connected with the coil of latching relay CJ, thereby make to isolate the closed conducting of output terminal of pressure regulator TB zero position protection travel switch XC in the time of zero-bit.
Wherein between two output terminals of described isolation pressure regulator TB, be parallel with the first voltage table V1, and one of them output terminal of this isolation pressure regulator TB is also connected with the first reometer A1.And be also parallel with second voltage Table V 2 at two other output terminal of described alternating current-direct current output selector switch K2, and one of them output terminal of this alternating current-direct current output selector switch K2 is also connected with the second reometer A2.
The utility model has adopted continuous adjustable high-power power of alterating and direct current, isolation (formula) pressure regulator of specifically selecting a kind of high conducting magnet core to make, be characterized in power input voltage and output voltage to keep apart completely, make it secondary side (output) 0-5A, 0-700 volt continuous adjustable power frequency AC and 0-5A, 0-1000 by electromagnetic coupled and lie prostrate continuously adjustable direct supply, make to isolate between the former limit of pressure regulator TB and secondary and realized electric isolation, guarantee the isolation between high-low pressure, ensured instrument and tested device security; Certainly, the output of direct supply wherein need to add that wave filter realizes by a bridge rectifier module.
0.5 grade of four and half panel type table, embedded installation have been selected in combined-voltage current measurement, wherein between interchange output calibrating terminal and direct current output calibrating terminal, alternating current ammeter (i.e. the first reometer A1) and DC ammeter (i.e. the second reometer A2) are connected in series respectively, also parallel connection has accessed A.C. voltmeter (i.e. the first voltage table V1) and D.C. voltmeter (being second voltage Table V 2), voltage table, reometer are selected measurand by switch (being alternating current-direct current output selector switch K2), accurately extremely according to 0.5 grade of GB GB.
In the utility model, also adopt a constant current formula over-current protection relay (being overcurrent relay IJ) that volume is very little; when tester of the present utility model in use overload or tested device punctures or generator amature overvoltage protection (jumper) action after; excess current protective function in the utility model starts; two backflow auxiliary contact of latching relay disconnect; thereby cut-out instrument power source, has guaranteed the safety of instrument, test specimen and testing crew.
The utility model also on dynamical isolation pressure regulator TB design and installation the zero position protection of micro limit switch (being zero position protection travel switch XC) as isolation pressure regulator TB; thereby restriction isolation pressure regulator TB entry condition (position); making to isolate pressure regulator TB can only start in zero-bit, prevents from isolating the danger that the pressure regulator TB superpotential that error starting produces is at an arbitrary position brought instrument, test specimen and testing crew.
Instrument power source has designed automatically and has divided, locking device, device has adopted the A.C. contactor (being latching relay CJ) of a 10A, carrying out control instrument power supply with a switch knob HN and an opening button TN cut-offs, on two buttons, all can be designed with pilot lamp, be convenient to the clear and definite instrument of instrumentation personnel and starting or stoping state, the normally opened contact that has been connected in series respectively switch knob HN in the field coil loop of A.C. contactor is a pair of, opening button TN normally closed contact is a pair of, the normally closed contact of overcurrent relay IJ is a pair of, the zero position protection travel switch XC normally opened contact of isolation pressure regulator TB is a pair of.Realized robotization interlock protection, that is:, when instrument excess current tunes to open power supply, pressed opening button TN tripping power supply, tested device punctures automatic tripping power supply.
The components and parts of instrument are disposed and are arranged in a casing, casing upper design convenient and reasonable control operation display panel, casing has also designed the upper cover that can start, the instrument upper cover that closes after finishing using, become a complete chest, be convenient to copy mechanically and take care of, there is good waterproof, protection against the tide, shockproof effect.When instrument uses, can directly take power equipment scene, raise case lid and connect test wire energy safe ready and complete efficiently according to test method the experiment work of generator amature overvoltage protection.
Using method of the present utility model and principle of work are:
Tester of the present utility model before use, is first pressed output voltage by instrument interchange output calibrating terminal, direct current output calibrating terminal and is selected (interchange, direct current) to arrive generator amature overvoltage protection (jumper) two ends.K1 closes a switch; make instrument charged; in the time guaranteeing to isolate pressure regulator TB in zero-bit; alternating current-direct current output selector switch K2 is chosen in direct current outgoing position; press the coil magnetization that switch knob HN makes latching relay CJ; three normally opened contact closures of latching relay CJ; switch knob HN and zero position protection travel switch XC award self-sustaining by A.C. contactor one normally opened contact simultaneously; it is charged that the connection of power supply major loop makes to isolate pressure regulator TB; the knob of rotation isolation pressure regulator TB; from zero to 1000 volt of VD is steadily boosted, carry out direct current output.
According to the electric current and voltage data that gather, can depict the acting characteristic curve of generator amature overvoltage protection (jumper), judge the quality of generator amature overvoltage protection according to the curve of drawing, provide conclusion (of pressure testing).In the time being raised to the trigger action of generator super-voltage protection device; instrument excess current protective function starts, and the normally closed contact of overcurrent relay IJ disconnects, the coil losing electricity of latching relay CJ; three normally opened contacts all recover off-state, thereby cut off instrument working power.
Claims (8)
1. a generator amature overvoltage protection tester; it is characterized in that: comprise isolation pressure regulator (TB); two input ends of this isolation pressure regulator (TB) connect civil power by switch (K1); and two output terminal is connected with two input ends of an alternating current-direct current output selector switch (K2); two output terminals of this alternating current-direct current output selector switch (K2) are as exchanging output calibrating terminal, and two other output terminal of this alternating current-direct current output selector switch (K2) is exported calibrating terminal as direct current after being connected with current rectifying and wave filtering circuit.
2. generator amature overvoltage protection tester as claimed in claim 1, is characterized in that: wherein current rectifying and wave filtering circuit is made up of bridge rectifier circuit and capacitor filter (C).
3. generator amature overvoltage protection tester as claimed in claim 1, is characterized in that: wherein between switch (K1) and isolation pressure regulator (TB), be connected by relay latching circuit.
4. generator amature overvoltage protection tester as claimed in claim 3; it is characterized in that: wherein relay latching circuit comprises the coil of switch knob (HN), opening button (TN) and the latching relay (CJ) of series connection; this three's two ends are connected in parallel on the two ends of described switch (K1); wherein first normally opened contact of this latching relay (CJ) is connected in parallel on switch knob (HN) two ends, and second normally opened contact of this latching relay (CJ) and the 3rd normally opened contact are connected on respectively between switch (K1) and isolation pressure regulator (TB).
5. generator amature overvoltage protection tester as claimed in claim 4; it is characterized in that: wherein between input end of alternating current-direct current output selector switch (K2) and an output terminal of isolation pressure regulator (TB), be in series with the coil of overcurrent relay (IJ), first normally closed contact of this overcurrent relay (IJ) is connected with the coil of latching relay (CJ).
6. generator amature overvoltage protection tester as claimed in claim 4; it is characterized in that: wherein also comprise zero position protection travel switch (XC); the normal opened contact of this zero position protection travel switch (XC) is arranged on the movable zero-bit of the carbon brush place on isolation pressure regulator (TB) top; and the output terminal of this zero position protection travel switch (XC) is connected with the coil of latching relay (CJ), thereby make to isolate the closed conducting of output terminal of pressure regulator (TB) zero position protection travel switch (XC) in the time of zero-bit.
7. generator amature overvoltage protection tester as claimed in claim 1; it is characterized in that: wherein between two output terminals of described isolation pressure regulator (TB), be parallel with the first voltage table (V1), and one of them output terminal is also connected with the first reometer (A1).
8. generator amature overvoltage protection tester as claimed in claim 1; it is characterized in that: between two other output terminal as direct current output calibrating terminal of wherein said alternating current-direct current output selector switch (K2), be also parallel with second voltage table (V2), and one of them output terminal is also connected with the second reometer (A2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420149405.7U CN203772991U (en) | 2014-03-31 | 2014-03-31 | Generator rotor overvoltage protector tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420149405.7U CN203772991U (en) | 2014-03-31 | 2014-03-31 | Generator rotor overvoltage protector tester |
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| Publication Number | Publication Date |
|---|---|
| CN203772991U true CN203772991U (en) | 2014-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420149405.7U Expired - Lifetime CN203772991U (en) | 2014-03-31 | 2014-03-31 | Generator rotor overvoltage protector tester |
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| Country | Link |
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| CN (1) | CN203772991U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103869195A (en) * | 2014-03-31 | 2014-06-18 | 国电科学技术研究院银川电力技术分院 | Engine rotor over-voltage protection device tester |
| CN108318813A (en) * | 2018-04-16 | 2018-07-24 | 国家电网公司 | A kind of direct current calibration equipment suitable for rotor over-voltage protection device |
-
2014
- 2014-03-31 CN CN201420149405.7U patent/CN203772991U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103869195A (en) * | 2014-03-31 | 2014-06-18 | 国电科学技术研究院银川电力技术分院 | Engine rotor over-voltage protection device tester |
| CN103869195B (en) * | 2014-03-31 | 2017-03-22 | 国电科学技术研究院银川电力技术分院 | Engine rotor over-voltage protection device tester |
| CN108318813A (en) * | 2018-04-16 | 2018-07-24 | 国家电网公司 | A kind of direct current calibration equipment suitable for rotor over-voltage protection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140813 |