CN205539311U - High-voltage power supply loop fault detection device - Google Patents
High-voltage power supply loop fault detection device Download PDFInfo
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- CN205539311U CN205539311U CN201620366052.5U CN201620366052U CN205539311U CN 205539311 U CN205539311 U CN 205539311U CN 201620366052 U CN201620366052 U CN 201620366052U CN 205539311 U CN205539311 U CN 205539311U
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Abstract
The utility model discloses a high-voltage power supply loop fault detection device, which comprises a three-phase alternating current 380V power supply, a transformer side detection module and a wiring terminal row, wherein the three-phase alternating current 380V power supply comprises A, B, C three phases; transformer side detection module is including the three-phase air switch, first fuse and the three-phase alternating current reactor of establishing ties in proper order, the inlet wire end that the three-phase air switch was opened is linked to each other with the A, B, C three-phases of the three-phase 380V power of exchanging respectively, the binding post row including respectively with A, B, C three-phase A binding post, B binding post and the C binding post that links to each other of three-phase alternating current reactor. The utility model discloses a high voltage power supply return circuit fault detection device leads to safe low-voltage and test and detect the phenomenon that has or not short circuit, broken circuit or open a way in the return circuit in advance to the high voltage return circuit. The system has the advantages of simple structure, simple operation, safety and capability of rapidly and conveniently checking whether the system has a fault state.
Description
Technical field
This utility model relates to one and electrically detects device, particularly relates to a kind of high voltage supply loop fault detection device.
Background technology
Electrical equipment and current supply circuit thereof are cumbersome, circuit is the most intensive, there is the reactor being connected in parallel or concatenating in major part high voltage supply loop, rheostat, heavy-duty motor and transformator etc., owing to the factors such as its alternate resistance of its functions of the equipments feature is less restrict, after once connecting, cannot carry out accurately measuring whether its most mounted loop exists the faults such as short circuit with existing circuit tester and microhmmeter, such as: from the connection cable of MCC cabinet to frequency conversion rectifier cabinet, cable core number is many, and and be connected to the equipment such as diode or electric capacity, the value such as A of circuit tester test, B phase resistance is 0 judgement affecting us, A cannot be known, B phase is short-circuit or normal.Therefore, in prior art, its cable connected of commonly used dismounting or connection bus confirm again, to get rid of the faults such as the short circuit of electric power system transmission line of electricity, open circuit, reach the check debugging task in safe and reliable completion system loop.
Verification mode main contents are as follows: use circuit tester or correcting line machine to test transmission line of electricity, check whether loop meets the requirement of the equal circuit of A, B, C, N directly checked in each phase such as transformator feeder assembly.As in loop, resistance is less, it is impossible to each phase line of Direct Recognition, then need to check system design principle figure, analysis circuit causes the factor that resistance is less.When loop has the equipment such as transformator, reactor, rheostat, for avoiding ignoring the appearance of the faults such as the short circuit of circuit misphase or open circuit because analyzing this factor, connection cable or enclosed busbar dismounting, the exclusive PCR source, in order to intuitive and reliable check system circuit of transformer equipment will be connected to.
The technical disadvantages of which:
1, work consuming is time-consuming, cannot directly check system line, need to analyze investigation；
2, waste of manpower resource, need to carry out dismantling and secondary installing；
3, equipment damage risk, dismounting operation is likely to result in equipment part and damages.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of simple in construction, safe, efficient high voltage supply loop fault detection device.
This utility model solves the high voltage supply loop fault detection device that its technical problem is used, and including three-phase alternating current 380V power supply, transformer side detection module and connecting terminal block, described three-phase alternating current 380V power supply includes A, B, C three-phase；Described transformer side detection module include the three-phase sky being sequentially connected in series open, the first fuse and three-phase alternating current reactance device, the end of incoming cables that described three-phase sky is opened A, B, C three-phase with three-phase alternating current 380V power supply respectively is connected, and described connecting terminal block includes A binding post, B binding post and the C binding post that A, B, C three-phase with described three-phase alternating current reactance device is connected respectively.
Further, also include low voltage feeder system side detection module, described three-phase alternating current 380V power supply also includes N line, a wherein phase in described three-phase alternating current 380V power supply provides 220V low-tension supply with N line for described low voltage feeder system side detection module, described low voltage feeder system side detection module includes that the two-phase sky being sequentially connected in series is opened, second fuse, DC rectifier and diode, the positive pole of described diode is connected with the cathode output end of described DC rectifier, the negative pole of described diode is connected with the positive terminal of connecting terminal block, the cathode output end of described DC rectifier is connected with the negative terminal of connecting terminal block.
Further, the DC voltage of described DC rectifier output is 24V or 12V.
Further, wire and the clamp on amperemeter of band alligator clamp are also included.
The beneficial effects of the utility model are: high voltage supply loop fault of the present utility model detection device, by to the low-voltage of high voltage circuit logical safety in advance and test and in measure loop with or without short-circuit, open circuit or the phenomenon of open circuit, thus reach to avoid to be short-circuited when logical high voltage, open circuit etc. burns out the generation of electrical equipment and discharge accident.Have the advantage that
1, simple in construction, major part components and parts can directly utilize site operation resource；
2, simple to operate, safely, quickly, system test performance is good；
3, reduce human resources, can check that system has unfaulty conditions quickly and easily.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model；
Fig. 2 is that transformer side detects schematic diagram；
Fig. 3 be low voltage feeder system be exchange time detection schematic diagram；
Fig. 4 be low voltage feeder system be detection schematic diagram during direct current；
Shown in figure: three-phase alternating current 380V power supply 1, N line 11, transformer side detection module 2, three-phase sky drive the 21, first fuse 22, three-phase alternating current reactance device 23, low voltage feeder system side detection module 3, two-phase sky drive the 31, second fuse 32, DC rectifier module 33, diode 34, connecting terminal block 4, the wire 5 of band alligator clamp, clamp on amperemeter 6, detected high-tension transformer 7, DC feedback system positive pole 81, DC feedback system negative pole 82, circuit tester 9.
Detailed description of the invention
With embodiment, this utility model is further illustrated below in conjunction with the accompanying drawings.
As it is shown in figure 1, high voltage supply loop fault of the present utility model detection device, including three-phase alternating current 380V power supply 1, transformer side detection module 2 and connecting terminal block 4, described three-phase alternating current 380V power supply 1 includes A, B, C three-phase；Described transformer side detection module 2 includes that the three-phase sky being sequentially connected in series drives the 21, first fuse 22 and three-phase alternating current reactance device 23, described three-phase sky is opened the end of incoming cables of 21 A, B, C three-phase respectively with three-phase alternating current 380V power supply 1 and is connected, and described connecting terminal block 4 includes A binding post, B binding post and the C binding post that A, B, C three-phase with described three-phase alternating current reactance device 23 is connected respectively.
When using high voltage supply loop fault of the present utility model detection device detection high-tension transformer side, as in figure 2 it is shown, A binding post, B binding post and C binding post on connecting terminal block 4 are connected with on high-tension side A, B, C three-phase inlet wire of tested high-tension transformer 7 respectively.Wherein, three-phase alternating current 380V power supply 1 may utilize site operation resource, and three-phase alternating current 380V power supply 1 provides 380V alternating current power supply, three-phase sky to open 21 for cutting off, connect 380V power supply for detected high-tension transformer 7, and has overcurrent protection function；Fuse 22 is for overcurrent protection；The effect of its filtering of three-phase alternating current reactance device 23, prevents in power transmission moment, the dash current produced owing to tested high-tension transformer 7 power is big damage equipment greatly；Connecting terminal block 4 is for wiring.Three-phase sky drives 21 air switches that can select 32A.If in use finding, the air switch capacity selected is the least, it is also possible to change the air switch that capacity is bigger.
After the high-pressure side circuit connection of tested high-tension transformer 7, Guan Bi three-phase sky opens 21, then electric current and the voltage of low-pressure side are tested, record corresponding data, and be analyzed according to measured data, to illustrate as a example by air blower station 6KV system transformer (S11-1600/6 type, 6KV/0.4KV):
If low-pressure side three-phase line voltage is uneven, when current balance type is the most all about 0A, then can determine whether that it has open circuit to occur, such as: between A, B phase, have 25.3V, when the voltage between B, C phase, between C, A phase is 14.6V, can determine whether as C phase open circuit.In like manner A, B phase is as the determination methods of C phase.
If low-pressure side three-phase line voltage is uneven, it has two phases line voltage to be 0, and when this biphase current is bigger, then can determine whether the biphase phase fault that electric current is bigger.
Further, high voltage supply loop fault of the present utility model detection device, also include low voltage feeder system side detection module 3, described three-phase alternating current 380V power supply 1 also includes N line 11, a wherein phase in described three-phase alternating current 380V power supply 1 and N line provide 220V low-tension supply for described low voltage feeder system side detection module 3, described low voltage feeder system side detection module 3 includes that the two-phase sky being sequentially connected in series opens 31, second fuse 32, DC rectifier module 33 and diode 34, the positive pole of described diode 34 is connected with the cathode output end of described DC rectifier module 33, the negative pole of described diode 34 is connected with the positive terminal of connecting terminal block 4, the cathode output end of described DC rectifier module 33 is connected with the negative terminal of connecting terminal block 4.
Wherein, two-phase sky is opened 31 for cutting off, connect 220V power supply, and has overcurrent protection function；Second fuse 32 is for overcurrent protection；Alternating current power supply is converted into DC source output by DC rectifier module 33；The Main Function of diode 34 is protection DC rectifier module 33, and anti-backflow etc. burns out DC rectifier module 33.
Low voltage feeder system divides DC feedback system (if air blower station system frequency conversion rectifier loop is DC 5700V) and alternating current feeding system (three-phase alternating current loop).When low voltage feeder system is for exchange, the positive terminal of connecting terminal block 4 is connected with wherein a phase is test for busbar or cable is connected, and the negative terminal of connecting terminal block 4 is test for busbar with another phase or cable is connected, as shown in Figure 3.After being connected by tested alternating current feeding system, Guan Bi two-phase sky opens 31, and then test is test for busbar or the electric current of cable and voltage, records corresponding data, and is analyzed according to measured data.Illustrate as 24V, as a example by air blower station rectification inlet wire three-phase AC 3400V current supply circuit with the DC voltage of DC rectifier module 33 output:
A phase inlet wire cable side is connected with the positive terminal of connecting terminal block 4, B phase inlet wire cable side is connected with the negative terminal of connecting terminal block 4, + 24V, 0V voltage is added respectively to A, B phase inlet wire cable side, use circuit tester to measure the voltage between A, B phase of rectifier cabinet side, use clamp on amperemeter to measure the electric current in A phase inlet wire cable side and B phase inlet wire cable side.
If voltage is 0V between measured A, B phase, and when electric current is bigger, then A, B phase is short-circuit；
If voltage is 0V between measured A, B phase, and when electric current is 0, then the open circuit of A, B phase or connection error；
If voltage is-24V between measured A, B phase, and when electric current is 0, then A, B phase phase sequence mistake；
If voltage is+24V between measured A, B phase, and when electric current is 0, then A, B phase line is normal；
In like manner, can measure between B, C phase or C, A phase respectively, its operation and the method for analysis are ibid.
When low voltage feeder system is direct current, the positive terminal of connecting terminal block 4 is connected with DC feedback system positive pole 81, and the negative terminal of connecting terminal block 4 is connected, as shown in Figure 4 with DC feedback system negative pole 82.After tested DC feedback system connectivity, Guan Bi two-phase sky opens 31, then test DC feedback system inlet wire side DC feedback system positive pole 81, the electric current of DC feedback system negative pole 82, the voltage between test DC feedback system outgoing line side DC feedback system positive pole 81 and DC feedback system negative pole 82；Record corresponding data, and be analyzed according to measured data.With the DC voltage of DC rectifier module 33 output as 24V, illustrate as a example by the air blower station DC 5700V current supply circuit inverter cabinet of frequency conversion system (DC5700V be followed by) as a example by illustrate:
The positive terminal of connecting terminal block 4 is connected with DC feedback system positive pole 81, the negative terminal of connecting terminal block 4 is connected with DC feedback system negative pole 82, + 24V, 0V voltage is added respectively to the positive and negative end of DC feedback system circuit, use circuit tester to measure the voltage between inverter cabinet inlet wire side DC feedback system positive pole 81 and DC feedback system negative pole 82, use clamp on amperemeter to measure DC feedback system inlet wire side DC feedback system positive pole 81, the electric current of DC feedback system negative pole 82.
If voltage is 0V between measured positive and negative phase, and when electric current is bigger, then phase fault；
If voltage is 0V between measured positive and negative phase, and when electric current is 0, the most alternate open circuit；
If voltage is-24V between measured positive and negative phase, and when electric current is 0, the most alternate both positive and negative polarity is anti-；
If voltage is+24V between measured positive and negative phase, and when electric current is 0, then this circuit is normal.
In high voltage supply loop fault of the present utility model detection device, the output voltage of DC rectifier module 33 can configure according to practical situation, and generally, the DC voltage of described DC rectifier module 33 output is 24V or 12V.
In order to wiring and test are quick and easy, as preferred embodiment, also include the wire 5 of band alligator clamp, clamp on amperemeter 6 and circuit tester 9.Binding post and detected high-tension transformer 7 or the tested low voltage feeder system of connecting terminal block 4 is connected, it is possible to achieve quickly connect by the wire 5 of band alligator clamp；Owing to clamp on amperemeter is to be combined by current transformer and ammeter, the iron core of current transformer can open when clutching spanner；The wire that tested electric current is passed through can cut off and may pass through the breach that iron core opens, iron core Guan Bi after decontroling spanner.Use clamp on amperemeter 6 can realize the test of electric current on the basis of not cutting off test line, be conducive to improving work efficiency.Circuit tester 9 is conventionally test instrument, need not individually buy, can be cost-effective, and measures simple and convenient.
Claims (4)
1. high voltage supply loop fault detection device, it is characterised in that: include three-phase alternating current 380V power supply (1), transformer side
Detection module (2) and connecting terminal block (4), described three-phase alternating current 380V power supply (1) includes A, B, C three-phase；Described change
Depressor side detection module (2) includes that the three-phase sky being sequentially connected in series drives (21), the first fuse (22) and three-phase alternating current reactance device
(23), described three-phase sky is opened the end of incoming cables of (21) A, B, C three-phase respectively with three-phase alternating current 380V power supply (1) and is connected,
Described connecting terminal block (4) includes the A terminals that A, B, C three-phase with described three-phase alternating current reactance device (23) is connected respectively
Son, B binding post and C binding post.
2. high voltage supply loop fault detection device as claimed in claim 1, it is characterised in that: also include low voltage feeder system
Side detection module (3), described three-phase alternating current 380V power supply (1) also includes N line (11), described three-phase alternating current 380V power supply
(1) the wherein phase in and N line are that described low voltage feeder system side detection module (3) provides 220V low-tension supply, described low
Voltage feed system side detection module (3) includes that the two-phase sky being sequentially connected in series opens (31), the second fuse (32), DC rectifier mould
The cathode output end of block (33) and diode (34), the positive pole of described diode (34) and described DC rectifier module (33)
Being connected, the negative pole of described diode (34) is connected with the positive terminal of connecting terminal block (4), described DC rectifier module (33)
Cathode output end be connected with the negative terminal of connecting terminal block (4).
3. high voltage supply loop fault detection device as claimed in claim 2, it is characterised in that: described DC rectifier module (33)
The DC voltage of output is 24V or 12V.
4. high voltage supply loop fault detects device as claimed any one in claims 1 to 3, it is characterised in that: also include
Wire (5), clamp on amperemeter (6) and circuit tester (9) with alligator clamp.
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| CN201620366052.5U CN205539311U (en) | 2016-04-27 | 2016-04-27 | High-voltage power supply loop fault detection device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620366052.5U CN205539311U (en) | 2016-04-27 | 2016-04-27 | High-voltage power supply loop fault detection device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106168643A (en) * | 2016-08-31 | 2016-11-30 | 淮北工科检测检验有限公司 | A kind of secondary loop in power system fault quickfinder |
| CN110488137A (en) * | 2019-09-03 | 2019-11-22 | 广东电网有限责任公司 | A kind of apparatus and method detecting CT secondary circuit integrality |
| CN110716136A (en) * | 2019-11-27 | 2020-01-21 | 国网宁夏电力有限公司电力科学研究院 | Monitoring method and monitoring system of drop-out fuse |
| CN113219276A (en) * | 2021-04-14 | 2021-08-06 | 安徽佑赛科技股份有限公司 | Quality detection device for power unit module |
| CN114156069A (en) * | 2021-11-09 | 2022-03-08 | 阿坝铝厂 | System and method for testing short-circuit resistance of voltage-regulating rectifier transformer |
-
2016
- 2016-04-27 CN CN201620366052.5U patent/CN205539311U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106168643A (en) * | 2016-08-31 | 2016-11-30 | 淮北工科检测检验有限公司 | A kind of secondary loop in power system fault quickfinder |
| CN110488137A (en) * | 2019-09-03 | 2019-11-22 | 广东电网有限责任公司 | A kind of apparatus and method detecting CT secondary circuit integrality |
| CN110716136A (en) * | 2019-11-27 | 2020-01-21 | 国网宁夏电力有限公司电力科学研究院 | Monitoring method and monitoring system of drop-out fuse |
| CN110716136B (en) * | 2019-11-27 | 2021-12-31 | 国网宁夏电力有限公司电力科学研究院 | Monitoring method of drop-out fuse |
| CN113219276A (en) * | 2021-04-14 | 2021-08-06 | 安徽佑赛科技股份有限公司 | Quality detection device for power unit module |
| CN114156069A (en) * | 2021-11-09 | 2022-03-08 | 阿坝铝厂 | System and method for testing short-circuit resistance of voltage-regulating rectifier transformer |
| CN114156069B (en) * | 2021-11-09 | 2023-07-28 | 阿坝铝厂 | System and method for testing short-circuit resistance of voltage-regulating rectifier transformer |
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