CN108710054A - Wiring state detection device, method and the secondary circuit system of secondary circuit - Google Patents
Wiring state detection device, method and the secondary circuit system of secondary circuit Download PDFInfo
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- CN108710054A CN108710054A CN201810518490.2A CN201810518490A CN108710054A CN 108710054 A CN108710054 A CN 108710054A CN 201810518490 A CN201810518490 A CN 201810518490A CN 108710054 A CN108710054 A CN 108710054A
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- secondary circuit
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/18—Indicating phase sequence; Indicating synchronism
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/72—Testing of electric windings
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The present invention provides wiring state detection device, method and the secondary circuit systems of a kind of secondary circuit；Wherein, which includes signal source and hand-held detection device；Signal source is set in secondary circuit, at the secondary terminals of current transformer；Hand-held detection device is set on the circuit in secondary circuit；Signal source is used to generate the trigger signal of preset kind；For hand-held detection device for measuring in secondary circuit, the current data caused by trigger signal judges the wiring state of secondary circuit according to current data；Current data includes current duration and current direction；Wiring state includes wiring polarity and separate.The present invention improves the detection efficiency of the wiring condition of secondary circuit, reduces human cost and time cost.
Description
Technical field
The present invention relates to technical field of power systems, more particularly, to a kind of secondary circuit wiring state detection device,
Method and secondary circuit system.
Background technology
In the power system, measuring equipment, such as electric energy meter are needed, system mode is monitored.Not due to measuring equipment
Conveniently accessible system, generally use mutual inductor form circuit with measuring equipment, are measured to the electrical energy parameter of system, the circuit
Also referred to as secondary circuit.Do not come into operation in new clothes measuring equipment, when non-charging operation, can not intuitive judgment operation when wiring
State.Currently, generally judging wiring state in such a way that field personnel measures wiring break-make using multimeter.The core
Line mode heavy workload, efficiency are low；And secondary circuit and mutual inductor coupling part, secondary circuit and electricity must be disconnected in core line
It can table coupling part.Error is easy during being crimped again to return wire, such as the problems such as virtual connection, open circuit, wiring error,
The accuracy after circuit is restored is not ensured that.
Under normal conditions, plant stand apart from secondary circuit distance farther out, when core line, needs switch yard personnel and master control room personnel
In time communication, and to be formed to line loop need to connect an auxiliary conductor or use ground wire, so this work ideal situation
Four experienced staff of lower needs, could make the correctness of core line be protected.In addition to above-mentioned difficulties, customer side is opened
Power distribution cabinet often narrow space is closed, field personnel is limited operation difficulty by space, is easy to scrape sidewipe collision；Platform becomes batch meter peace
Often on rack, disconnecting the secondary coupling part of mutual inductor need to ascend a height operation holding position for a long time, increase operating risk and make
Industry difficulty.
Invention content
In view of this, the purpose of the present invention is to provide wiring state detection device, method and the secondary returnings of secondary circuit
Road system reduces human cost and time cost to improve the detection efficiency of the wiring condition of secondary circuit.
In a first aspect, an embodiment of the present invention provides a kind of wiring state detection device of secondary circuit, which includes
Signal source and hand-held detection device；Signal source is set in secondary circuit, at the secondary terminals of current transformer；Hand-held detection is set
It is standby to be set on the circuit in secondary circuit；Signal source is used to generate the trigger signal of preset kind；Hand-held detection device is used for
It measures in secondary circuit, the current data caused by trigger signal judges the wiring state of secondary circuit according to current data；Electricity
Flow data includes current duration and current direction；Wiring state includes wiring polarity and separate.
With reference to first aspect, an embodiment of the present invention provides the first possible embodiments of first aspect, wherein on
Hand-held detection device is stated to be additionally operable to：According to current duration, the break-make situation of wiring and separate is judged；According to current direction,
Judge whether wiring polarity is correct.
With reference to first aspect, an embodiment of the present invention provides second of possible embodiments of first aspect, wherein on
It includes square-wave signal to state trigger signal；Wherein, the separate determination of supply lines that the width of square-wave signal is connected according to secondary circuit.
With reference to first aspect, an embodiment of the present invention provides the third possible embodiments of first aspect, wherein on
It further includes step signal to state trigger signal.
With reference to first aspect, an embodiment of the present invention provides the 4th kind of possible embodiments of first aspect, wherein on
Signal source is stated to be arranged in parallel with current transformer and electric energy meter respectively.
With reference to first aspect, an embodiment of the present invention provides the 5th kind of possible embodiments of first aspect, wherein on
It further includes power supply to state device, and power supply is powered for signal source.
Second aspect, the embodiment of the present invention also provide a kind of secondary circuit system, which includes above-mentioned secondary circuit
Wiring state detection device further includes secondary circuit.
The third aspect, the embodiment of the present invention also provide a kind of wiring state detection method of secondary circuit, this method application
In above-mentioned device, this method includes：Signal source generates the trigger signal of preset kind；Hand-held detection device measures secondary circuit
In, the current data caused by trigger signal judges the wiring state of secondary circuit according to current data；Current data includes electricity
Flow duration and current direction；Wiring state includes wiring polarity and separate.
In conjunction with the third aspect, an embodiment of the present invention provides the first possible embodiments of the third aspect, wherein on
The step of stating the wiring state that secondary circuit is judged according to current data, including：According to current duration, the logical of wiring is judged
Disconnected situation and separate；According to current direction, judge whether wiring polarity is correct.
In conjunction with the third aspect, an embodiment of the present invention provides second of possible embodiments of the third aspect, wherein on
It includes square-wave signal to state trigger signal；Wherein, the separate determination of supply lines that the width of square-wave signal is connected according to secondary circuit.
The embodiment of the present invention brings following advantageous effect：
An embodiment of the present invention provides wiring state detection device, method and the secondary circuit systems of secondary circuit；Pass through
Signal source generates the trigger signal of preset kind；It is measured in secondary circuit by hand-held detection device, caused by trigger signal
Current data, to detect the wiring state of secondary circuit according to current data；Which improves the wiring feelings of secondary circuit
The detection efficiency of condition reduces human cost and time cost.
Other features and advantages of the present invention will illustrate in the following description, alternatively, Partial Feature and advantage can be with
Deduce from specification or unambiguously determine, or by implement the present invention above-mentioned technology it can be learnt that.
To enable the above objects, features and advantages of the present invention to be clearer and more comprehensible, better embodiment cited below particularly, and match
Appended attached drawing is closed, is described in detail below.
Description of the drawings
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in being described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, other drawings may also be obtained based on these drawings.
Fig. 1 is secondary circuit schematic diagram provided in an embodiment of the present invention；
Fig. 2 is second loop return wiring situation detects schematic diagram provided in an embodiment of the present invention；
Fig. 3 is a kind of structural schematic diagram of the wiring state detection device of secondary circuit provided in an embodiment of the present invention；
Fig. 4 is the circuit connection diagram of the wiring state detection device of another secondary circuit provided in an embodiment of the present invention；
Fig. 5 is the principle assumption diagram of current transformer provided in an embodiment of the present invention；
Fig. 6 is the equivalent circuit diagram of current transformer provided in an embodiment of the present invention；
Fig. 7 is the experimental circuit of secondary step experiment provided in an embodiment of the present invention；
Fig. 8 is step signal and the current signal figure measured in experimentation provided in an embodiment of the present invention；
Fig. 9 is a kind of experimental circuit carrying out secondary step experiment using square-wave signal provided in an embodiment of the present invention；
Figure 10 provides the current signal figure that two circuits measure in experimentation for the embodiment of the present invention；
Figure 11 is the experimental circuit provided in an embodiment of the present invention that another uses square-wave signal to carry out secondary step experiment
Figure；
Figure 12 is the current signal figure that two circuits measure in experimentation provided in an embodiment of the present invention；
Figure 13 is the oscilloscope display figure of pulsewidth experimental result provided in an embodiment of the present invention；
Figure 14 is the signal stream in the wiring state detection device course of work of secondary circuit provided in an embodiment of the present invention
To；
Figure 15 is a kind of structural schematic diagram of secondary circuit system provided in an embodiment of the present invention；
Figure 16 is a kind of flow chart of the wiring state detection method of secondary circuit provided in an embodiment of the present invention.
Icon：10a- current transformers；10b- electric energy meters；10c- multimeters；11- signal sources；12- holds detection device；
12a- pincers hold detection device.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with attached drawing to the present invention
Technical solution be clearly and completely described, it is clear that described embodiments are some of the embodiments of the present invention, rather than
Whole embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, shall fall within the protection scope of the present invention.
Currently, generally use field personnel measures the mode of wiring break-make to judge supply line using multimeter
The wiring state of electric energy metering secondary, is secondary circuit schematic diagram as shown in Figure 1, and wherein 10a is current transformer, 10b
For electric energy meter, secondary circuit and mutual inductor coupling part must be disconnected in core line, as shown in Fig. 2, 10c is multimeter；The party
Formula is time-consuming and laborious, and error-prone, is based on this, wiring state detection device, the method for secondary circuit provided in an embodiment of the present invention
And secondary circuit system, it can be applied to wiring state detection and the detection of other wiring states of the secondary circuit of electric system.
For ease of understanding the present embodiment, the wiring first to a kind of secondary circuit disclosed in the embodiment of the present invention
Condition checkout gear describes in detail.
A kind of structural schematic diagram of the wiring state detection device of secondary circuit shown in Figure 3, the device include letter
Number source 11 and hand-held detection device 12；Signal source 11 is set in secondary circuit, at the secondary terminals of current transformer 10a；Hand
It holds on the circuit that detection device 12 is set in secondary circuit；Signal source 11 is used to generate the trigger signal of preset kind；It is hand-held
For detection device 12 for measuring in secondary circuit, the current data caused by trigger signal judges secondary returning according to current data
The wiring state on road；Current data includes current duration and current direction；Wiring state includes wiring polarity and separate.
Secondary circuit (secondary circuit) is secondary windings in electrical system by mutual inductor, measures monitoring
The circuit that instrument (such as electric energy meter), relay, automatic device are unified by controlling cable, to control, protect, adjust, survey
The working condition of each parameter and each element in amount and monitoring primary circuit.
In the wiring state detection process to secondary circuit, the problems such as causing virtual connection, misconnection in order to avoid rewiring,
Signal source is accessed in secondary circuit by the secondary terminals of mutual inductor, with mutual inductor, electric energy table row at parallel circuit.The signal
Source can be signal generator, or include the microcontroller of signal launching procedure；Can may be voltage for current source
Source.The parameter of trigger signal, such as type, size, duration are pre-set in signal source；Trigger signal can be step
Signal, pulse signal etc. have the characteristics that the signal of instantaneous variation.Since mutual inductor has accessed winding in secondary circuit, visually
For inductance；Inductance has the characteristics of " logical direct current, resistance exchange ", and in the non-live line work of secondary circuit, electric energy meter can be considered short
Road (or low resistance), when trigger signal generates, if secondary circuit connection is good, first in signal source and power meter group
At circuit in generate electric current；The current data in the circuit is measured by ammeter, it, can be with if being able to detect that current data
Judge that the second loop return wiring is in good condition；The current direction indicated according to current data, it can be determined that whether the polarity of wiring
Correctly.
The problems such as causing virtual connection, misconnection in order to avoid rewiring, the present embodiment is using hand-held detection device to electric energy meter
The current data of place branch measures.The measurement method of the equipment can be the mode of similar clamp on amperemeter, i.e., will branch
The conducting wire on road is put into probe, to obtain current data by way of induction.In addition, when electric energy meter accesses multiple secondary returnings
Road, when wiring is difficult to differentiate between, as shown in Figure 1, can be by the parameter for the trigger signal that change signal source generates, such as difference
The duration of secondary circuit, trigger signal is different, to distinguish which circuit wiring to be measured belongs to.
An embodiment of the present invention provides a kind of wiring state detection devices of secondary circuit；It is generated by signal source and presets class
The trigger signal of type；It is measured in secondary circuit by hand-held detection device, the current data caused by trigger signal, to basis
Current data detects the wiring state of secondary circuit；Which improves the detection efficiency of the wiring condition of secondary circuit, reduces
Human cost and time cost.
The embodiment of the present invention additionally provides the wiring state detection device of another secondary circuit, and the device is shown in Fig. 3
Device basic on realize；As shown in figure 4, the device includes signal source 11 and pincerlike hand-held detection device 12a；Signal source 11 is set
It is placed in secondary circuit, at the secondary terminals of current transformer 10a, signal source is in parallel with current transformer and electric energy meter respectively to be set
It sets；The hand-held detection device of pincer is arranged in secondary circuit, in the wiring of electric energy meter 10b.Signal source generates preset kind
Trigger signal；The hand-held detection device of pincer measures in secondary circuit, the current data caused by trigger signal, according to electric current number
It is judged that the wiring state of secondary circuit；Current data includes current duration and current direction；Wiring state includes wiring
Polarity and separate.
Specifically, above-mentioned pincerlike hand-held detection device is additionally operable to：According to current duration, the break-make situation of wiring is judged
And it is separate；According to current direction, judge whether wiring polarity is correct.In practice, when trigger signal generates, if wiring is in
The state of connection, electric energy meter are equivalent to short circuit, and circuit where current transformer is equivalent to high impedance, and above equipment can detect
Circuit where electric energy meter has electric current to pass through, to judge that wiring is in the state connected；It is separate in the wiring for measuring secondary circuit
When, in the duration of the different trigger parameter of different separate settings, you can judged according to the current duration detected
It is separate belonging to wiring；According to correct wiring polarity, current direction is prejudged, if the side in the direction and anticipation that detect
To difference, it can be determined that wiring polarity is wrong.
Specifically, current transformer is that primary side high current is converted into secondary side low current according to electromagnetic induction principle
The instrument of measurement can also be considered as a kind of special transformer being dedicated as transformation size of current, principle assumption diagram such as Fig. 5 institutes
Show, is mainly made of the iron core and winding that are closed.Its first side winding the number of turns is seldom, by electric current be electric current I to be measured1, P1
And P2For secondary terminals in circuit；Secondary side winding the number of turns is more, induced current I2, S1And S2Secondary terminals in circuit, Z2∑For
Secondary side equiva lent impedance, φ0For induced field.The equivalent circuit diagram of current transformer is as shown in fig. 6, dashed rectangle represents iron
The heart, ZIFor primary impedance, ZCTFor secondary winding impedance, ZMFor excitation impedance, ImFor exciting current, E is excitation potential, and Z is returned
Road is impedance loop.Current transformer open a way when secondary side impedance be：
ZIt is secondary=Zct+Zm
Current Transformer Secondary is structure of the coil uniform winding on iron core, and this structure can be by current transformer
Secondary winding is regarded as an inductance；Inductance has the characteristic that logical straight resistance is handed over, while also having resistance to step signal and impact signal
Disconnected effect.Use grade of rated voltage for 0.66kV, no-load voltage ratio 200/5A, precision 0.2S, it is 5VA to appraise and decide load, and lower limit is negative
It carries the current transformer for being 3.75VA and carries out secondary step experiment；Before experiment, bridge test current transformer inductance value is used
For 243mH, and it is 62.53m Ω to measure current transformer D.C. resistance, is believed using the capacitance Discharge Simulation step of a 1000UF
Number, experimental circuit is as shown in Figure 7.Step signal and the current signal figure measured are as shown in Figure 8 in experimentation, wherein black
Color curve is step signal, and Grey curves are the electric current in circuit, and electric current starts slowly to rise in 750 μ s in circuit, in sound
1ms current transformers are equivalent to open-circuit condition before answering, and current-responsive curve tends to be straight, and high impedance is presented.Therefore above-mentioned triggering
Signal can be step signal.
Further, secondary step experiment is carried out using square-wave signal, due to the secondary circuit for power system monitoring
In, conducting wire is usually very long, therefore is 2 Ω by the equivalent resistance of conducting wire, and experimental circuit is as shown in figure 9, shown in Fig. 10 is to show
Wave device signal recording figure, time 5ms, in figure the black curve of top be circuit 1. in current signal；The ash of lower section in figure
Color curve be circuit 2. in current signal.
When the resistance of conducting wire is negligible, experimental circuit is as shown in figure 11, is oscillography shown in Figure 12
The signal recording figure of device, time 5ms, wherein upper black curve be circuit 1. in current signal；The Grey curves of lower section
For circuit 2. in current signal.It can be seen that after signal source sends out a square-wave signal, because of Current Transformer Secondary offset
Jump response is in the characteristic of high impedance, and mainly from circuit, 1. secondary circuit circulates electric current.Therefore, above-mentioned trigger signal can be square wave
Signal.
In addition, in secondary loop of mutual inductor be added step signal after, signal there are one decay process, this be because
There is the characteristic that logical straight resistance is handed over for Current Transformer Secondary side, in order to enable 1. step signal largely circulates from secondary circuit,
Need the width for controlling signal, because of the limitation of signal source load capacity, the square-wave signal test of a 20ms is only added first
The selection section of signal.It is the oscilloscope display figure of pulsewidth experimental result as shown in figure 13.Thus, it can be known that being at least 0 in width
The square-wave signal of~20ms can be used as trigger signal.
Can be obtained by testing above, based on Current Transformer Secondary side step response (when a jump signal is added,
The secondary presentation high impedance status of mutual inductor) the complete realization secondary circuit polarity in circuit can kept to be examined with integrality
It looks into.I.e. at mounted Current Transformer Secondary terminal, the square-wave signal of a suitable width is added, as shown in figure 14,
Middle I is the electric current by main line, I1And I2Respectively by the electric current in circuit where circuit where secondary winding and measuring apparatus,
S1And S2For secondary terminals, logic judgment is carried out to signal using clamp on amperemeter and detection device at access device, is realized
Inspection to loop polarity and integrality.
Further, the separate determination of supply lines that the width of square-wave signal is connected according to secondary circuit.I.e. by setting side
The separate judgement of ABC three-phases may be implemented in the width of wave；As supply lines be A phases when, use the width of square-wave signal for 5ms；For
When electric wire is B phases, the width of square-wave signal is 10ms；When supply lines is C phases, the width of square-wave signal is 15ms.According to electric current
The current duration that table measures, you can the separate of supply lines is determined, to which which secondary circuit the wiring that judgement measures belongs to.
Further, above-mentioned apparatus further includes power supply, which powers for signal source.
This method may be implemented in keep circuit complete in the case of, include mainly polarity, separate to circuit connection correctness
Judged, while whether attachment detection current loop is complete, reduces human cost and time cost.
A kind of structural schematic diagram of secondary circuit system shown in Figure 15, the system include connecing for above-mentioned secondary circuit
Line condition checkout gear 150 further includes secondary circuit 151.
A kind of secondary circuit system provided in an embodiment of the present invention, a kind of secondary circuit provided with above-described embodiment connect
Line condition checkout gear technical characteristic having the same reaches identical technology effect so can also solve identical technical problem
Fruit.
A kind of wiring state detection method of secondary circuit shown in Figure 16, this method are applied to above-mentioned device,
This method includes：
Step S1600, signal source generate the trigger signal of preset kind；
Step S1602 holds detection device and measures in secondary circuit, the current data caused by trigger signal, according to electricity
Fluxion it is judged that secondary circuit wiring state；Current data includes current duration and current direction；Wiring state includes
Wiring polarity and separate.
Specifically, above-mentioned to judge that the wiring state of secondary circuit is realized especially by following manner according to current data：
(1) according to current duration, judge the break-make situation of wiring and separate；
(2) according to current direction, judge whether wiring polarity is correct.
Specifically, above-mentioned trigger signal includes square-wave signal；Wherein, the width of square-wave signal is connected according to secondary circuit
The separate determination of supply lines.
The wiring state detection device of secondary circuit that the embodiment of the present invention is provided a kind of and secondary circuit system
Computer program product, including the computer readable storage medium of program code is stored, the instruction that said program code includes
It can be used for executing the method described in previous methods embodiment, specific implementation can be found in embodiment of the method, and details are not described herein.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description
And/or the specific work process of device, it can refer to corresponding processes in the foregoing method embodiment, details are not described herein.
In addition, in the description of the embodiment of the present invention unless specifically defined or limited otherwise, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
Can also be electrical connection to be mechanical connection；It can be directly connected, can also indirectly connected through an intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
It, can be with if the function is realized in the form of SFU software functional unit and when sold or used as an independent product
It is stored in a computer read/write memory medium.Based on this understanding, technical scheme of the present invention is substantially in other words
The part of the part that contributes to existing technology or the technical solution can be expressed in the form of software products, the meter
Calculation machine software product is stored in a storage medium, including some instructions are used so that a computer equipment (can be
People's computer, server or network equipment etc.) it performs all or part of the steps of the method described in the various embodiments of the present invention.
And storage medium above-mentioned includes：USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), arbitrary access are deposited
The various media that can store program code such as reservoir (RAM, Random Access Memory), magnetic disc or CD.
In the description of the present invention, it should be noted that term "center", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for the description present invention and simplify description, do not indicate or imply the indicated device or element must have a particular orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for description purposes only, and is not understood to indicate or imply relative importance.
Finally it should be noted that：Embodiment described above, only specific implementation mode of the invention, to illustrate the present invention
Technical solution, rather than its limitations, scope of protection of the present invention is not limited thereto, although with reference to the foregoing embodiments to this hair
It is bright to be described in detail, it will be understood by those of ordinary skill in the art that：Any one skilled in the art
In the technical scope disclosed by the present invention, it can still modify to the technical solution recorded in previous embodiment or can be light
It is readily conceivable that variation or equivalent replacement of some of the technical features；And these modifications, variation or replacement, do not make
The essence of corresponding technical solution is detached from the spirit and scope of technical solution of the embodiment of the present invention, should all cover the protection in the present invention
Within the scope of.Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. a kind of wiring state detection device of secondary circuit, which is characterized in that including signal source and hand-held detection device；
The signal source is set in secondary circuit, at the secondary terminals of current transformer；The hand-held detection device is set to
On circuit in the secondary circuit；
The signal source is used to generate the trigger signal of preset kind；
The hand-held detection device is for measuring in the secondary circuit, the current data caused by the trigger signal, according to
The current data judges the wiring state of the secondary circuit；The current data includes current duration and electric current side
To；The wiring state includes wiring polarity and separate.
2. the apparatus according to claim 1, which is characterized in that the hand-held detection device is additionally operable to：
According to the current duration, the break-make situation of the wiring and described separate is judged；
According to the current direction, judge whether the wiring polarity is correct.
3. the apparatus according to claim 1, which is characterized in that the trigger signal includes square-wave signal；Wherein, the side
The width of wave signal is according to the separate determination of supply lines that the secondary circuit connects.
4. the apparatus according to claim 1, which is characterized in that the trigger signal further includes step signal.
5. the apparatus according to claim 1, which is characterized in that the signal source respectively with the current transformer and electric energy
Table is arranged in parallel.
6. the apparatus according to claim 1, which is characterized in that described device further includes power supply, and the power supply is signal source
Power supply.
7. a kind of secondary circuit system, which is characterized in that the system comprises claim 1-5 any one of them secondary circuits
Wiring state detection device, further include secondary circuit.
8. a kind of wiring state detection method of secondary circuit, which is characterized in that it is any that the method is applied to claim 1-5
Device described in, the method includes：
Signal source generates the trigger signal of preset kind；
Hand-held detection device measures in the secondary circuit, the current data caused by the trigger signal, according to the electric current
Data judge the wiring state of the secondary circuit；The current data includes current duration and current direction；It is described to connect
Linear state includes wiring polarity and separate.
9. according to the method described in claim 8, it is characterized in that, described judge the secondary circuit according to the current data
Wiring state the step of, including：
According to the current duration, the break-make situation of the wiring and described separate is judged；
According to the current direction, judge whether the wiring polarity is correct.
10. the method according to the description of claim 7 is characterized in that the trigger signal includes square-wave signal；Wherein, described
The width of square-wave signal is according to the separate determination of supply lines that the secondary circuit connects.
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| CN201810518490.2A CN108710054A (en) | 2018-05-25 | 2018-05-25 | Wiring state detection device, method and the secondary circuit system of secondary circuit |
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| CN201810518490.2A CN108710054A (en) | 2018-05-25 | 2018-05-25 | Wiring state detection device, method and the secondary circuit system of secondary circuit |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109782212A (en) * | 2018-12-29 | 2019-05-21 | 国网山东省电力公司聊城供电公司 | Bilateral separate type metering secondary wiring check device and its core line method |
| CN110082703A (en) * | 2019-05-22 | 2019-08-02 | 国网重庆市电力公司电力科学研究院 | A kind of power distribution network metering device second loop return wiring detection method and device |
| CN111413645A (en) * | 2019-01-05 | 2020-07-14 | 杭州普安科技有限公司 | Intelligent alignment instrument for metering secondary circuit |
| CN111650535A (en) * | 2020-05-29 | 2020-09-11 | 深圳供电局有限公司 | Electric energy meter wiring detection method |
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| CN110082703A (en) * | 2019-05-22 | 2019-08-02 | 国网重庆市电力公司电力科学研究院 | A kind of power distribution network metering device second loop return wiring detection method and device |
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| CN112858958A (en) * | 2021-01-05 | 2021-05-28 | 中国神华能源股份有限公司国华电力分公司 | Method for detecting current wiring polarity of high-backup-power-transformation protection device |
| CN112858958B (en) * | 2021-01-05 | 2023-02-28 | 中国神华能源股份有限公司国华电力分公司 | Method for detecting current wiring polarity of high-backup-power-transformation protection device |
| CN115267621A (en) * | 2022-06-24 | 2022-11-01 | 北京天能继保电力科技有限公司 | Virtual connection judgment method and device for secondary circuit wiring terminal of power grid current transformer |
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