CN204188757U - Portable power equipment leakage point insulating pick-up unit - Google Patents
Portable power equipment leakage point insulating pick-up unit Download PDFInfo
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- CN204188757U CN204188757U CN201420574570.7U CN201420574570U CN204188757U CN 204188757 U CN204188757 U CN 204188757U CN 201420574570 U CN201420574570 U CN 201420574570U CN 204188757 U CN204188757 U CN 204188757U
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Abstract
The utility model discloses a kind of portable power equipment leakage point insulating pick-up unit, be provided with load current pick-up unit, link rod and hand-held data sink, load current pick-up unit comprises hook type current transformer, pick-up unit housing, load current detection module, hook type current transformer is arranged on the top of pick-up unit housing, load current detection module is fixed on the inside of pick-up unit housing, the output terminal of hook type current transformer is electrically connected with the input end of load current detection module, the bottom of pick-up unit housing is fixed with insulation connector, the movable upper end of link rod is installed on this insulation connector, hand-held data sink comprises receiving trap housing, be arranged on the data reception module of this receiving trap housing, liquid crystal display, the current signal that hook type current transformer detects by load current detection module sends to data reception module by wireless network and shows on a liquid crystal display.The advantage that the utility model has easy disassembly, carries.
Description
Technical field
The utility model relates to a kind of portable power equipment leakage point insulating pick-up unit, belongs to outdoor power equipment insulation leakagel volume leakage point insulating detection technique field.
Background technology
Line loss is the Main Economic technical indicator of the design of reflection power network planning, production run and management level, the influence factor of the size of circuit line loss is numerous, except electrical reticulation design plans that unreasonable, ladder of management falls behind, infrastructure is outmoded, plant maintenance is improper is also an important aspect, thus decreases the economic benefit of enterprise to a great extent.As due to electric energy transfer device aging, transformer equipment is aging, electronic devices and components are filthy, line interface gets rusty, the class of insulation is caused to reduce, insulator is revealed and is increased, in any case the reasons such as line interface resistance increase cause line loss increase to be that electric system is made rational planning for design, manage all unavoidable problem as a whole, so how effectively reduce because the reason of these outwardnesies causes line loss to be one of important process of studying for a long period of time of power supply administration, therefore search exactly to reduce the line loss problem important measures caused for above-mentioned reasons and get rid of potential faults point.
The main lookup method that current electrical network distribution line insulation declines mainly adopts push-and-pull detection method step by step and electric energy Method of Checking.
1, level push-and-pull detection method
That line sectionalizing is had a power failure, trial line charging step by step, or investigate potential faults with megger after segmentation power failure.Power off time is long, has a strong impact on power supply quality and economic benefit.
2, electric energy Method of Checking
By regularly checking the actual power consumption of the total delivery of certain Qu and statistics, when can be known in platform district for a long time by com-parison and analysis, line loss increases, but accurately can not locate the potential faults point caused.
Utility model content
Technical problem to be solved in the utility model is: provide a kind of portable power equipment leakage point insulating pick-up unit.
Solve the problems of the technologies described above, the technical scheme that the utility model adopts is as follows:
A kind of portable power equipment leakage point insulating pick-up unit, it is characterized in that: described pick-up unit is provided with load current pick-up unit, link rod and hand-held data sink, described load current pick-up unit comprises hook type current transformer, pick-up unit housing, load current detection module and pick-up unit power supply, described hook type current transformer is arranged on the top of pick-up unit housing, described load current detection module and pick-up unit power supply are fixed on the inside of pick-up unit housing, the output terminal of described hook type current transformer is electrically connected with the input end of load current detection module, the bottom of described pick-up unit housing is fixed with insulation connector, the movable upper end of described link rod is installed on this insulation connector, described hand-held data sink comprises receiving trap housing, be arranged on the data reception module of this receiving trap housing, liquid crystal display and receiving trap power supply, the current signal that hook type current transformer detects by described load current detection module sends to data reception module by wireless network and shows on a liquid crystal display.
As a kind of embodiment of the present utility model, described load current detection module comprises operational amplifier, harmonic filter, analog to digital converter, detection module processor and synchronous radio transmitter; The output terminal of described hook type current transformer (101) is connected with the signal input part stomion of detection module processor with analog to digital converter by operational amplifier, harmonic filter successively, and the signal output port that described detection module processor is sent out is connected with the input endpoint of synchronous radio transmitter; Described data reception module comprises synchronous radio receiver, storage unit and receiver module processor, described synchronous radio receiver is connected by wireless network adaptation with synchronous radio transmitter, and described synchronous radio receiver, storage unit and liquid crystal display are electrically connected with the corresponding port of receiver module processor respectively.
As a kind of embodiment of the present utility model, described link rod is the interface type link rod being provided with five joint bars.
Compared with prior art, the utility model has following beneficial effect:
The utility model is provided with load current pick-up unit, link rod and hand-held data sink, staff is by being connected on link rod by load current pick-up unit, can facilitate when not needing power failure, safety, directly by the hook type current transformer cramp joint of load current pick-up unit on 20kV and following wire of high-tension line, checkout equipment supply side and power side current value is detected respectively with this, again by this supply side detected of hand-held data sink instant playback and power side current value, namely the size by comparing two current values judges whether insulation declines rapidly, whether line interface resistance increases, find insulation hidden danger early, also can realize the measurement of load current simultaneously, without the need to having a power failure, do not produce the person and equipment breakdown risk that personnel's misoperation fault causes.The advantage that the utility model has easy disassembly, carries.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
Fig. 1-1 is the schematic appearance of load current pick-up unit in the utility model;
Fig. 1-2 is the schematic appearance of link rod in the utility model;
Fig. 1-3 is the schematic appearance of hand-held data sink in the utility model;
Fig. 2 is the schematic block circuit diagram of portable power equipment leakage point insulating pick-up unit of the present utility model;
Fig. 3 is the application state schematic diagram of portable power equipment leakage point insulating pick-up unit of the present utility model.
Embodiment
As shown in Fig. 1-1 to Fig. 3, portable power equipment leakage point insulating pick-up unit of the present utility model, be provided with load current pick-up unit 1, link rod 3 and hand-held data sink 4, load current pick-up unit 1 comprises hook type current transformer 101, pick-up unit housing 102, load current detection module 103 and pick-up unit power supply 104, hook type current transformer 101 is arranged on the top of pick-up unit housing 102, load current detection module 103 and pick-up unit power supply 104 are fixed on the inside of pick-up unit housing 102, the output terminal of hook type current transformer 101 is electrically connected with the input end of load current detection module 103, the bottom of pick-up unit housing 102 is fixed with insulation connector 2, the movable upper end of link rod 3 is installed on this insulation connector 2, hand-held data sink 4 comprises receiving trap housing 401, be arranged on the data reception module 402 of this receiving trap housing 401, liquid crystal display and receiving trap power supply 403, the current signal that hook type current transformer 101 detects by load current detection module 103 sends to data reception module 402 by wireless network and shows on a liquid crystal display.
Wherein, link rod 3 is preferably provided with the interface type link rod of five joint bars.Load current detection module 103 comprises operational amplifier, harmonic filter, analog to digital converter, detection module processor and synchronous radio transmitter; The output terminal of hook type current transformer 101 is connected with the signal input part stomion of detection module processor with analog to digital converter by operational amplifier, harmonic filter successively, and the signal output port that detection module processor is sent out is connected with the input endpoint of synchronous radio transmitter; Data reception module 402 comprises synchronous radio receiver, storage unit and receiver module processor, synchronous radio receiver is connected by wireless network adaptation with synchronous radio transmitter, and synchronous radio receiver, storage unit and liquid crystal display are electrically connected with the corresponding port of receiver module processor respectively.
Adopt portable power equipment leakage point insulating pick-up unit of the present utility model to carry out the principle of power equipment leakage detection and operation steps as follows:
See Fig. 3, be reduced to example with insulator dielectric and carry out the explanation of leak current fault point Cleaning Principle, according to Ohm law I
leak=U
phase/ R is known, and leakage current I and insulator impedance are inversely proportional to, and the leakage current reducing therefore insulator due to impedance after insulator dielectric reduction can increase, and now leakage current I can flow to the earth, so now supply electrical measurement electric current I by shaft tower
supply=I
by+i
leak, therefore we only need to measure power equipment supply side with whether becoming by electrical measurement current differential and just can know whether insulator insulate greatly and decline.
Concrete detection method:
Step one: the power supply opening load current pick-up unit 1 and hand-held data sink 4, and set up communication.
Step 2: by measuring supply side with the hook type current transformer 101 of load current pick-up unit 1 respectively and being subject to electrical measurement, demonstrate supply side and the current value by electrical measurement before and after the liquid crystal display of hand-held data sink 4.
Step 3: operating personnel compare supply side and the current differential by electrical measurement, judge whether to be greater than normal insulation leakage current constant, if greatly, then for insulation declines, it is determined that the presence of leak current fault.
The principle of work of portable power equipment leakage point insulating pick-up unit of the present utility model is as follows:
See Fig. 2, hook type current transformer 101 adopts CT mask technique and remains silent pincer structure, in use tested wire is placed in pincers stream ring, after now hook type current transformer 101 can carry out magnitude transform according to actual load size of current, feeble signal is adopted the signal amplification circuit on PCB by shielding line, the too little circuit of signal converted out due to hook type current transformer 101 is so must adopt amplifying circuit to amplify signal, and be amplified to the acceptable range of signal of rear class wave filter (0 ~ 3.3V), by wave filter to the power frequency sinusoidal signal that just can reach a 0 ~ 3.3V after the harmonic components filtering be mixed in signal, this signal is sent into 12 analog to digital converters of data processor inside, just 1/2 can be obtained
12sampling resolution, by analog to digital converter, 64 discrete samplings of a cycle are carried out to signal and (meet sample frequency F>2F
signal) after by fast Fourier algorithm FFT, computing is carried out to signal after just can obtain corresponding to this sinusoidal signal vector value Y
sinusoidal signal=a+bj, now data processor can according to this vector and current effective value relations I
rMS=√ a
2+ b
2, just can calculate current effective value, finally by I
load current=I
rMS* K (wherein K is calibration coefficient) has just calculated the true load current value of actual test line.Carry out record for the ease of adopting the utility model when measuring power equipment leakage both sides load current value and compare, load current pick-up unit of the present utility model also comprises 433MHz synchronized transmissions module, hand-held data sink comprise to carry out wireless telecommunications with synchronized transmissions module synchronously accept module, load detection device by wireless synchronization transmitter module with synchronously accept module the circuit actual load measured sent to hand-held data sink.In order to patrol officer can be convenient to, above-mentioned power equipment leakage both sides load current value is carried out record and compared, the hand-held data receiving device of the utility model, also add data storage cell and data show liquid crystal, when load detection device by load current by wireless transmitter module with accept after module is sent to hand-held data sink, hand-held receiving trap can according to the load current sequencing received, load current is saved in storage unit, now patrol officer is according to sequencing during measurement power equipment leakage both sides load current value, recall load current value and shown on a liquid crystal display, now just can judge whether according to the size of power equipment leakage both sides load current value decline of insulating herein.
The utility model does not limit to and above-mentioned embodiment; according to foregoing; according to ordinary technical knowledge and the customary means of this area; do not departing under the utility model above-mentioned basic fundamental thought prerequisite; the utility model can also make the equivalent modifications of other various ways, replacement or change, all drops among protection domain of the present utility model.
Claims (3)
1. a portable power equipment leakage point insulating pick-up unit, it is characterized in that: described pick-up unit is provided with load current pick-up unit (1), link rod (3) and hand-held data sink (4), described load current pick-up unit (1) comprises hook type current transformer (101), pick-up unit housing (102), load current detection module (103) and pick-up unit power supply (104), described hook type current transformer (101) is arranged on the top of pick-up unit housing (102), described load current detection module (103) and pick-up unit power supply (104) are fixed on the inside of pick-up unit housing (102), the output terminal of described hook type current transformer (101) is electrically connected with the input end of load current detection module (103), the bottom of described pick-up unit housing (102) is fixed with insulation connector (2), the movable upper end of described link rod (3) is installed on this insulation connector (2), described hand-held data sink (4) comprises receiving trap housing (401), be arranged on the data reception module (402) of this receiving trap housing (401), liquid crystal display and receiving trap power supply (403), the current signal that hook type current transformer (101) detects by described load current detection module (103) sends to data reception module (402) by wireless network and shows on a liquid crystal display.
2. portable power equipment leakage point insulating pick-up unit according to claim 1, is characterized in that: described load current detection module (103) comprises operational amplifier, harmonic filter, analog to digital converter, detection module processor and synchronous radio transmitter; The output terminal of described hook type current transformer (101) is connected with the signal input part stomion of detection module processor with analog to digital converter by operational amplifier, harmonic filter successively, and the signal output port that described detection module processor is sent out is connected with the input endpoint of synchronous radio transmitter; Described data reception module (402) comprises synchronous radio receiver, storage unit and receiver module processor, described synchronous radio receiver is connected by wireless network adaptation with synchronous radio transmitter, and described synchronous radio receiver, storage unit and liquid crystal display are electrically connected with the corresponding port of receiver module processor respectively.
3. portable power equipment leakage point insulating pick-up unit according to claim 1 and 2, is characterized in that: described link rod (3) is for being provided with the interface type link rod of five joint bars.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420574570.7U CN204188757U (en) | 2014-09-30 | 2014-09-30 | Portable power equipment leakage point insulating pick-up unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420574570.7U CN204188757U (en) | 2014-09-30 | 2014-09-30 | Portable power equipment leakage point insulating pick-up unit |
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| CN204188757U true CN204188757U (en) | 2015-03-04 |
Family
ID=52620740
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| CN201420574570.7U Active CN204188757U (en) | 2014-09-30 | 2014-09-30 | Portable power equipment leakage point insulating pick-up unit |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105242168A (en) * | 2015-10-29 | 2016-01-13 | 国网浙江省电力公司绍兴供电公司 | Split type leakage current acquisition system |
| CN106226652A (en) * | 2016-08-10 | 2016-12-14 | 国网浙江台州市黄岩区供电公司 | A kind of low-voltage overhead line electric leakage long range positioning detection device |
| CN106771818A (en) * | 2017-01-04 | 2017-05-31 | 陈华军 | A kind of overhead transmission line electric leakage addressing instrument |
| CN107179484A (en) * | 2017-05-16 | 2017-09-19 | 广东电网有限责任公司佛山供电局 | Hand-held type multifunctional power equipment intelligent detecting instrument based on internet |
| WO2018035753A1 (en) * | 2016-08-24 | 2018-03-01 | 张甘霖 | Non-contact electric leakage detection device for high-voltage cable |
| CN110470941A (en) * | 2019-09-16 | 2019-11-19 | 威胜集团有限公司 | Creepage detection method, device, equipment and the storage medium of alternating current |
| CN110824239A (en) * | 2019-11-28 | 2020-02-21 | 国网新疆电力有限公司物资公司 | Portable load current testing device and using method |
-
2014
- 2014-09-30 CN CN201420574570.7U patent/CN204188757U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105242168A (en) * | 2015-10-29 | 2016-01-13 | 国网浙江省电力公司绍兴供电公司 | Split type leakage current acquisition system |
| CN106226652A (en) * | 2016-08-10 | 2016-12-14 | 国网浙江台州市黄岩区供电公司 | A kind of low-voltage overhead line electric leakage long range positioning detection device |
| WO2018035753A1 (en) * | 2016-08-24 | 2018-03-01 | 张甘霖 | Non-contact electric leakage detection device for high-voltage cable |
| CN106771818A (en) * | 2017-01-04 | 2017-05-31 | 陈华军 | A kind of overhead transmission line electric leakage addressing instrument |
| CN106771818B (en) * | 2017-01-04 | 2018-01-12 | 陈华军 | A kind of overhead transmission line electric leakage addressing instrument |
| CN107179484A (en) * | 2017-05-16 | 2017-09-19 | 广东电网有限责任公司佛山供电局 | Hand-held type multifunctional power equipment intelligent detecting instrument based on internet |
| CN110470941A (en) * | 2019-09-16 | 2019-11-19 | 威胜集团有限公司 | Creepage detection method, device, equipment and the storage medium of alternating current |
| CN110470941B (en) * | 2019-09-16 | 2021-10-08 | 威胜集团有限公司 | Method, device and equipment for detecting leakage current of alternating current and storage medium |
| CN110824239A (en) * | 2019-11-28 | 2020-02-21 | 国网新疆电力有限公司物资公司 | Portable load current testing device and using method |
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