CN108169624A - A kind of fault source localization method - Google Patents
A kind of fault source localization method Download PDFInfo
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- CN108169624A CN108169624A CN201711431861.5A CN201711431861A CN108169624A CN 108169624 A CN108169624 A CN 108169624A CN 201711431861 A CN201711431861 A CN 201711431861A CN 108169624 A CN108169624 A CN 108169624A
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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
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/086—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution networks, i.e. with interconnected conductors
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Abstract
The invention discloses a kind of fault source localization methods, Step 1: the parallel connection three-phase line spare all the way on former three-phase line, Step 2: the first-class interval of three-phase line between the three-phase breaker of initial and end end, which is cut-off, several nodes, three pairs of electric connecting terminals are drawn from each node, wherein, per the same famous prime minister of a pair of electric connecting terminal connection two-way three-phase line；Step 3: judging whether three-phase line occurs singlephase earth fault, judge the three-phase line of singlephase earth fault and failure phase occurs, the three-phase breaker at three-phase line both ends disconnects where failure is occurred；Step 4: failure phase and another three-phase line correspond to the current signal in phase between electric connecting terminal on each node of continuous acquisition, continuous two maximum current signals are taken out；Step 5: the differential pressure signal between measuring the current signal of above-mentioned two maximum；Step 6: the specific location of the source of trouble is determined according to above-mentioned differential pressure signal.The present invention realizes the quick positioning of the source of trouble.
Description
Technical field
The present invention relates to a kind of intelligent checking system, it is more particularly related to a kind of fault source positioning side
Method.
Background technology
Single-phase earthing is 10kV (35kV) single-phase earthing of small current earthing system, and singlephase earth fault is that distribution system is most normal
The failure seen mostly occurs in moist, rainy weather.Due on screen of trees, distribution line insulator it is single-phase breakdown, single-phase wire break and
Caused by the factors such as toy harm.Single-phase earthing not only affects the normal power supply of user, but also there may be excessively electric
Pressure, burns out equipment or even causes phase fault and expand accident.
In actual operation, brick field plastic cloth is fallen on conducting wire because of strong wind, is made transformer substation voltage mutual inductor burn observations, is made
Forming apparatus damage, large area blackout.Singlephase earth fault occur after, it is also possible to generate resonance overvoltage, generate times over
The resonance overvoltage of normal voltage jeopardizes the insulation of transformer equipment, and severe patient makes transformer equipment insulation breakdown, causes more major issue
Therefore.
After singlephase earth fault occurs, it may occur however that intermittent arc grounding causes resonance overvoltage, generates times over just
The overvoltage of normal voltage, overvoltage puncture the insulator dielectric further made on circuit, cause serious short circuit accident, simultaneously
Part distribution transformer may be burnt, makes the arrester on circuit, fuse insulating breakdown, burn, it is also possible to electrical fire occur
Calamity.
It is badly in need of a kind of fault source localization method as a result, to find the source of trouble in time and cut off rapidly, in order to avoid cause more
It is big to influence.
Invention content
It is an object of the invention to solve at least the above, and provide the advantages of at least will be described later.
A further object of the invention is to be directed to the design defect of more than transmission line of electricity, provides a kind of fault source positioning
Method automatically judges abort situation by fault collection unit and failure detector the present invention realizes the source of trouble
Quick positioning.
In order to realize these purposes and other advantages according to the present invention, a kind of fault source localization method is provided,
Including：
Step 1: the parallel connection three-phase line spare all the way on former three-phase line, three-phase line input terminal and power end are connected
It connects, three-phase line output terminal is connect with electrical equipment, at former three-phase line initial and end end and spare three-phase line initial and end both ends
A three-phase breaker is respectively arranged with, head end three-phase breaker is arranged under the input parallel connected end of three-phase line described in two-way
Tail end three-phase breaker is arranged on the output-parallel end upstream of three-phase line described in two-way by trip；
Step 2: the first-class interval of three-phase line between the three-phase breaker of initial and end end, which is cut-off, several nodes, from each
Three pairs of electric connecting terminals are drawn on the node, wherein, per the same famous prime minister of a pair of electric connecting terminal connection two-way three-phase line；
Step 3: the input of the voltage signal on the three-phase line neutral point, three-phase line described in two-way is acquired in real time
The electric signal on parallel wire and on output terminal parallel wire is held, judges whether three-phase line occurs according to the voltage signal on neutral point
Singlephase earth fault, then according to two-way on the input terminal parallel wire of three-phase line and output terminal parallel wire on electric signal
Judge the three-phase line of singlephase earth fault and failure phase occurs, the three-phase breaker at three-phase line both ends where failure is occurred
It disconnects；
Step 4: when singlephase earth fault occurs, pass through failure phase on each node of scanning device continuous acquisition
And another three-phase line corresponds to the current signal in phase between electric connecting terminal, takes out continuous two maximum current signals, that is, sentences
It is disconnected to be out of order in the failure phase that source is happened between two adjacent nodes；
Step 5: the current signal of above-mentioned two maximum is input in an accident analysis unit, pass through accident analysis list
Member measures the differential pressure signal between the current signal of above-mentioned two maximum；
Step 6: the specific location of the source of trouble is determined according to above-mentioned differential pressure signal.
Preferably, a failure detector is provided with, several electrical contact ends are provided on the failure detector, it will be each
A electrical contact end is distributed in the periphery of the failure detector, while the electrical contact end is sequentially connected two neighboring
Same a pair electric connecting terminal on node, in the electrical contact end inner space at least provided with an angular displacement ball bar ruler,
The angular displacement ball bar ruler both sides rotate respectively is provided with a selection detection unit, each that detection unit bottom is selected to be provided with one
Rotation is set in the reading head on the angular displacement ball bar ruler, and driving selection detection unit is rotated on angular displacement ball bar ruler, read
The rotational angle of several acquisition selection detection units, by input, output terminal and the two adjacent institutes of the selection detection unit
State the contact of electrical contact end selective conductivity.
Preferably, a cylindricality cavity is opened up respectively in failure detector center both sides, it will each electrical contact
End is run through and protrudes from the failure detector both sides, and the cylindricality cavity is located on the inside of the electrical contact end, the scanning
In equipment setting cylindricality cavity；
First scanning device is set in the first cylindricality cavity, and the first scanning device specifically includes the first angular displacement ball bar
Ruler, the first rotating mechanism, the first turntable and first choice detection unit, the first angular displacement ball bar ruler protrusion are arranged on the first column
First turntable is connected in the rotation axis of first rotating mechanism, first choice is examined by shape cavity bottom periphery
It surveys unit and is arranged on the first turntable upper surface, the first turntable is driven in the first angular displacement ball by the first rotating mechanism
It is rotated on grid ruler；
Second scanning device is set in the second cylindricality cavity, and the second scanning device specifically includes the second angular displacement ball bar
Ruler, the second rotating mechanism, the second turntable and the second selection detection unit, the second angular displacement ball bar ruler protrusion are arranged on the second column
Second turntable is connected in the rotation axis of second rotating mechanism by shape cavity bottom periphery, and the second selection is examined
It surveys unit and is arranged on the second turntable upper surface, the second turntable is driven in the second angular displacement ball by the second rotating mechanism
It is rotated on grid ruler.
Preferably, first annular groove is provided in the first turntable bottom, the first turntable bottom passes through
The first annular groove rotation is set on the first angular displacement ball bar ruler, is additionally provided in the first annular groove
First reading head, first reading head rotate synchronously with first turntable and are set in the first angular displacement ball bar ruler
On, for measure the first turntable rotational angle, with control the input of the first choice detection unit, output terminal with it is adjacent
Two electrical contact end selective conductivities contacts；
Second annular groove is provided in the second turntable bottom, the second turntable bottom passes through described second
Annular groove rotation is set on the second angular displacement ball bar ruler, and the second reading is additionally provided in the second annular groove
Head, second reading head are rotated synchronously with second turntable and are set on the second angular displacement ball bar ruler, be used for
Measure the rotational angle of the second turntable, with control the second selection input of detection unit, output terminal with adjacent two
The electrical contact end selective conductivity contact.
Preferably, the selection detection unit is outwardly protruded in the cylindricality cavity certain distance, in the selection detection
Unit periphery stagger setting has a pair of conductive column, the length of the conductive column in the turntable center to the electrical contact end
Air line distance between side is consistent, by the input of the selection detection unit of connection on the inside of the conductive column or output terminal, meanwhile,
It is provided with a contact head on the outside of the conductive column, spacing and two adjacent electrical contact ends between a pair of contact head
Between spacing correspond to it is consistent, under the driving of rotating mechanism, by a pair of contact head and two adjacent electrical contacts
Selective conductivity contact is held, the current signal between each pair of electric connecting terminal is acquired into selection detection unit.
Preferably, the selection detection unit includes a first resistor for being sequentially connected in series setting, warning light, current acquisition
Unit and second resistance, the first resistor connect the first conductive column, and the second resistance connects the second conductive column.
Preferably, the rotation direction of first choice detection unit and the second selection detection unit is on the contrary, from three-phase line two
Electric current of the head respectively between each pair of electric connecting terminal at different nodes is detected, and finally detects the phase of two electric current maximums
Neighbors, the i.e. source of trouble are happened on the circuit between the two nodes.
Preferably, the differential pressure signal, the difference current-electricity are acquired by a difference current-voltage changer
The first input end of buckling parallel operation passes through the first current acquisition list on one first preamplifier and the failure detector
First signal output end connection, the second input terminal of the difference current-voltage changer by one second preamplifier and are somebody's turn to do
The second current acquisition cell signal output terminal connection on the failure detector, the difference current-voltage changer
Output terminal is connect by a post amplifier with the input terminal of the distance exam module, and the distance exam module is used to calculate
The specific location of the source of trouble.
The present invention includes at least following advantageous effect：
1st, the method for the present invention can quickly judge the nature of trouble of transmission line of electricity, and may recognize that failure occurred
Specific circuit quickly finds failure and is solved in time, fault coverage is avoided further to expand to provide staff, and then
It ensure that the reliability of transmission line of electricity；
2nd, after failure occurs, by the present invention can quick positioning failure spot, so as to improve staff
Solution failure efficiency；
3rd, pass through the method for the present invention, it is ensured that breakdown maintenance is carried out in the case of transmission line of electricity normal power supply, so as to
The technical issues of solving power failure operation and influencing power supply.
Part is illustrated to embody by further advantage, target and the feature of the present invention by following, and part will also be by this
The research and practice of invention and be understood by the person skilled in the art.
Description of the drawings
Fig. 1 is the flow diagram of the method for the present invention；
Fig. 2 is the system line figure of mains-power circuit in embodiment；
Fig. 3 is the structure diagram of fault collection unit in embodiment；
Fig. 4 is failure detector internal structure schematic diagram in embodiment；
Fig. 5 is vertical view when two contact heads are hanging on failure detector in embodiment；
Fig. 6 is vertical view when two contact heads are contacted with electrical contact end on failure detector in embodiment；
Fig. 7 is turntable bottom substance schematic diagram in embodiment；
Fig. 8 is the structure diagram of contact head in embodiment；
Fig. 9 is that detection unit internal circuit configuration schematic diagram is selected in embodiment；
Figure 10 is accident analysis unit internal circuit configuration schematic diagram in embodiment.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings, to enable those skilled in the art with reference to specification text
Word can be implemented according to this.
It should be appreciated that such as " having ", "comprising" and " comprising " term used herein do not allot one or more
The presence or addition of a other element or combinations.
The present invention provides a kind of fault source localization method, as shown in Figure 1, including the following steps：
Step 1: the parallel connection three-phase line spare all the way on former three-phase line, by each three-phase line input terminal simultaneously
Connect after connection with three-phase electricity source, using the output terminal of each three-phase line be arranged in parallel output terminal as three-phase line with
Electrical equipment connects, and two-way three-phase power line is arranged in parallel, is independent of each other, in former three-phase line initial and end end and spare three-phase
Circuit initial and end both ends are respectively arranged with a three-phase breaker, and head end three-phase breaker is arranged on three-phase line described in two-way
Input parallel connected end downstream, tail end three-phase breaker is arranged on to the output-parallel end upstream of three-phase line described in two-way.
At least mode that is arranged in parallel of two-way transmission of electricity three-phase line is arranged in parallel using two-way three-phase line in the present embodiment
And supply network is built, as shown in figs. 2-10, two-way transmits electricity three-phase line in input terminal and output parallel connection, electricity of the invention
Net system uses the three-phase power line that two-way is arranged in parallel, wherein after three-phase line breaks down all the way, can cut off in time,
The normal work of another way network system is not interfered with, so as to improve network system power supply continuity, meanwhile, failure occurs
Afterwards, breakdown maintenance can be carried out to the three-phase line that breaks down in the case of network system normal power supply, so as to avoid pair
All power-off carries out trouble hunting to network system, provides power supply continuity and reliability.
The first electrical signal collection unit 11 is provided on the neutral point of the three-phase line, for acquiring in network system
The neutral point voltage of three-phase power line, during network system normal operation, neutral point voltage zero is single when occurring on three-phase line
After phase earth fault, neutral point voltage passes through 11 collected neutral point of the first electrical signal collection unit to rise to phase voltage
Voltage can judge the singlephase earth fault occurred in three-phase line.
The second electrical signal collection unit 12 is provided on the input terminal parallel wire of three-phase line described in two-way, three described in two-way
Third electrical signal collection unit 13 is provided on the output terminal parallel wire of phase line, wherein, the original three-phase line head end setting
There is the first three-phase breaker K1, the spare three-phase line head end is provided with the second three-phase breaker K2, the original three-phase line
Tail end is provided with third three-phase breaker K3, and the spare three-phase line tail end is provided with the 4th three-phase breaker K4, wherein, the
One three-phase breaker K1 and the second three-phase breaker K2 is arranged on the input parallel connected end downstream of three-phase line described in two-way, and the three or three
Phase breaker K3 and the 4th three-phase breaker K4 is arranged on the output-parallel end upstream of three-phase line described in two-way, works as three-phase line
On break down after, you can former three-phase line is cut off by the first three-phase breaker K1 and third three-phase breaker K3,
Spare three-phase line is cut off by the second three-phase breaker K2 and the 4th three-phase breaker K4, guarantee is not broken down
Three-phase line normal power supply operation.
Step 2: the first-class interval of three-phase line between the three-phase breaker of initial and end end, which is cut-off, several nodes, from each
Three pairs of electric connecting terminals are drawn on the node, wherein, per the same famous prime minister of a pair of electric connecting terminal connection two-way three-phase line.
Specifically, in the present embodiment, according to the length of circuit between three-phase line head and the tail both ends, first-class to three-phase line
Away from several nodes are divided, there are one fault collection units for setting at the same node on former three-phase line and spare three-phase line
20, so as to which the fault collection unit 20 is equidistantly disposed on the three-phase line.
Several fault collection units 20 are disposed on the three-phase line between the three-phase breaker of initial and end end, that is,
It says, fault collection unit 20 is arranged on the former three-phase line between the first three-phase breaker K1 and third three-phase breaker K3,
And on the spare three-phase line being arranged between the second three-phase breaker K2 and the 4th three-phase breaker K4, fault collection unit 20
For judging the specific location of earth fault generation.
The fault collection unit 20 includes three pairs of single-phase circuit breakers, and first in each pair of single-phase circuit breaker is single-phase
Breaker is connected in a certain phase line of former three-phase line, second single-phase circuit breaker is connected on the correspondence phase of spare three-phase line
On line, each single-phase circuit breaker output terminal draws an electric connecting terminal, and during normal operation, each single-phase circuit breaker, which is in, to be closed
State.
Specifically, the fault collection unit 20 specifically includes：
First pair of single-phase circuit breaker is made of the first single-phase circuit breaker 211 and the second single-phase circuit breaker 212, and described
Two contacts 213,214 of one single-phase circuit breaker 211 are connected in the first phase line of former three-phase line, the second single-phase open circuit
Two contacts 215,216 of device 212 are connected in the first phase line of spare three-phase line；
Second pair of single-phase circuit breaker is made of 221 and the 4th single-phase circuit breaker 222 of third single-phase circuit breaker, and described
Three single-phase circuit breakers 221 are connected in the second phase line of former three-phase line, and the 4th single-phase circuit breaker 222 is connected on spare three
In second phase line of phase line；
Third is made of, described single-phase circuit breaker the 5th single-phase circuit breaker 231 and the 6th single-phase circuit breaker 232
Five single-phase circuit breakers 231 are connected in the third phase line of former three-phase line, and the 6th single-phase circuit breaker 232 is connected on spare three
In the third phase line of phase line.
In the present embodiment, according to the length of circuit between three-phase line head and the tail both ends, to equidistantly being divided on three-phase line
Several nodes, at the same node on former three-phase line and spare three-phase line setting there are one fault collection unit 20, from
And the fault collection unit 20 is equidistantly disposed on the three-phase line.First single-phase circuit breaker 211 is defeated
Outlet draws the first electric connecting terminal 217, and 212 output terminal of the second single-phase circuit breaker draws the second electric connecting terminal 218, and described the
Three single-phase circuit breakers, 221 output terminal draws third electric connecting terminal 227, and 222 output terminal of the 4th single-phase circuit breaker draws the 4th
Electric connecting terminal 228,231 output terminal of the 5th single-phase circuit breaker draw the 5th electric connecting terminal 237, the 6th single-phase circuit breaker
232 output terminals draw the 6th electric connecting terminal 238.
Step 3: the input of the voltage signal on the three-phase line neutral point, three-phase line described in two-way is acquired in real time
The electric signal on parallel wire and on output terminal parallel wire is held, judges whether three-phase line occurs according to the voltage signal on neutral point
Singlephase earth fault, then according to two-way on the input terminal parallel wire of three-phase line and output terminal parallel wire on electric signal
Judge the three-phase line of singlephase earth fault and failure phase occurs, the three-phase breaker at three-phase line both ends where failure is occurred
It disconnects.
Second electrical signal collection unit 12 can acquire voltage swing, size of current and the stream per phase on spare three-phase line
To when mains-power circuit normal power supply is run, the second electrical signal collection unit 12 and third electrical signal collection unit 13 collect
Current direction be consistent, when earth fault occurs for a certain phase in three-phase line, pass through the second electrical signal collection unit 12
Voltage when the three-phase electric signal of acquisition can judge the corresponding phase and failure to break down mutually normally is positive and negative, specifically,
The respective phase voltage of earth fault two-phase does not occur and rises to line voltage, faulted phase voltage becomes 0, according to non-faulting two-phase
Size of current can calculate that voltage when being out of order mutually normal is positive and negative with flow direction.
Specifically, for example, after earth fault occurs for the first phase on mains-power circuit three-phase line, and extrapolate the first phase and exist
When normal operating voltage is positive voltage, if corresponding event in the second electrical signal collection unit 12 and third electrical signal collection unit 13
When the electric current of barrier phase flows outwardly simultaneously, then earth fault occurs for the first phase in former three-phase line；If the second electric signal is adopted
When the electric current of failure phase corresponded in collection unit 12 and third electrical signal collection unit 13 flowing inward into simultaneously, then spare three-phase line
In the first phase occur earth fault.After earth fault occurs for the first phase on mains-power circuit three-phase line, and extrapolate first
Mutually when normal operating voltage is negative voltage, if right in the second electrical signal collection unit 12 and third electrical signal collection unit 13
When the electric current of failure phase being answered to flow outwardly simultaneously, then earth fault occurs for the first phase in spare three-phase line；If the second electricity
When the electric current of failure phase corresponded in signal gathering unit 12 and third electrical signal collection unit 13 flowing inward into simultaneously, then former three-phase
Earth fault occurs for the first phase in circuit.
It may determine that earth fault occurs for mains-power circuit, and sends out report by the first electrical signal collection unit 11 as a result,
Alert signal can specifically be judged ground connection event occurs by the second electrical signal collection unit 12 and third electrical signal collection unit 13
The three-phase line and phase line of barrier if earth fault occurs for former three-phase line, control the first three-phase breaker K1 and the three or three
Phase breaker K3 is cut-off simultaneously, if earth fault occurs for spare three-phase line, controls the second three-phase breaker K2 and the 4th
Three-phase breaker K4 is cut-off simultaneously.
Step 4: when singlephase earth fault occurs, pass through failure phase on each node of scanning device continuous acquisition
And another three-phase line corresponds to the current signal in phase between electric connecting terminal, takes out continuous two maximum current signals, that is, sentences
It is disconnected to be out of order in the failure phase that source is happened between two adjacent nodes.
In order to realize, failure phase and another three-phase line are corresponded in phase between electric connecting terminal on each node of continuous acquisition
Current signal, present embodiments provides a failure detector 30, and the electricity that failure detector 30 includes several insulation sets connects
Contravention, the periphery that each electrical contact end is distributed in the failure detector 30 forms a border, in the electrical contact end
At least provided with an angular displacement ball bar ruler, the angular displacement ball bar ruler both ends rotate respectively is provided with selection detection list in side space
Member 40, the selection detection unit 40 limitation rotation are each that 40 bottom of detection unit is selected to set on the angular displacement ball bar ruler
Be equipped with the reading head that a rotation is set on the angular displacement ball bar ruler, the input of the selection detection unit 40, output terminal with
Two adjacent electrical contact end selective exposures, thus will be same on original three-phase line at same node and spare three-phase line
Current signal is collected in a selection detection unit 40 between one phase.
Specifically, current embodiment require that three failure detectors 30, a failure detector 30 is for acquisition two
Current signal on three-phase line at same node between a certain phase, three failure detectors 30 can acquire two triple lines
Current signal at same node between each phase on the road.
30 periphery of failure detector is provided with the electrical contact end of a circle equidistantly distributed, and each electricity connects
Insulation gap is set between contravention, the first electric connecting terminal 217 and the second electric connecting terminal on each fault collection unit 20
218 are conductively connected to the electrical contact end on first failure detector 30, each fault collection list successively
227 and the 4th electric connecting terminal 228 of third electric connecting terminal in member 20 is conductively connected to second failure detector successively
The electrical contact end on 30, the 5th electric connecting terminal 237 and the 6th electric connecting terminal 238 on each fault collection unit 20
The electrical contact end being conductively connected to successively on the third failure detector 30.
Specifically, first 30 periphery of failure detector be provided with a circle equidistantly distributed electrical contact end 311,312,
313rd, 314,315,316 ..., first fault collection unit 20 is arranged at first node, and second failure collecting unit 20 is set
It puts at second node, and so on, the first electric connecting terminal 217 connection electrical contact end on first fault collection unit 20
311, the second electric connecting terminal 218 connection electrical contact end 312；The first electric connecting terminal 217 on second failure collecting unit 20 connects
Connect electrical contact end 313, the second electric connecting terminal 218 connection electrical contact end 314；First on third fault collection unit 20 is electrically connected
217 connection electrical contact end 315 of end is connect, the second electric connecting terminal 218 connects electrical contact end 316, and so on, whole fault collection lists
The first electric connecting terminal 217 and the second electric connecting terminal 218 in member 20 are sequentially connected the electricity of first 30 periphery of failure detector
On contact jaw, 227 and the 4th electric connecting terminal 228 of third electric connecting terminal on whole fault collection units 20 is sequentially connected second
On the electrical contact end of 30 periphery of failure detector, the 5th electric connecting terminal 237 and the 6th electricity on whole fault collection units 20
Connecting pin 238 is sequentially connected on the electrical contact end of 30 periphery of third failure detector.
A cylindricality cavity is respectively arranged in the 30 center both sides of failure detector, the scanning device sets cylindricality
In cavity, the first scanning device is set in the first cylindricality cavity, the first scanning device specifically include the first angular displacement ball bar ruler,
First rotating mechanism, the first turntable and first choice detection unit, the first angular displacement ball bar ruler protrusion are arranged on the first cylindricality
First turntable is connected in the rotation axis of first rotating mechanism, first choice is detected by cavity bottom periphery
Unit is arranged on the first turntable upper surface, and the first turntable is driven in the first angular displacement ball bar by the first rotating mechanism
It is rotated on ruler；Second scanning device is set in the second cylindricality cavity, and the second scanning device specifically includes the second angular displacement ball bar
Ruler, the second rotating mechanism, the second turntable and the second selection detection unit, the second angular displacement ball bar ruler protrusion are arranged on the second column
Second turntable is connected in the rotation axis of second rotating mechanism by shape cavity bottom periphery, and the second selection is examined
It surveys unit and is arranged on the second turntable upper surface, the second turntable is driven in the second angular displacement ball by the second rotating mechanism
It is rotated on grid ruler.
The distance of cylindricality cavity center to each electrical contact end is consistent, and the electrical contact end runs through and protrudes from the failure
30 both sides of detection device, and the cylindricality cavity is located on the inside of the electrical contact end；Wherein, 34 bottom periphery of the first cylindricality cavity
Protrusion is provided with the first angular displacement ball bar ruler 32, and the second cylindricality cavity bottom periphery protrusion is provided with the second angular displacement ball bar ruler,
The first rotating mechanism and the first turntable 33 are provided in the first cylindricality cavity 34, first turntable 33 is connected to institute
In the rotation axis for stating the first rotating mechanism, the first turntable 33 is freely turned by the first rotating mechanism in the first cylindricality cavity 34
It is dynamic, it is provided with first annular groove 331 in 33 bottom of the first turntable, 33 bottom of the first turntable passes through described the
The rotation of one annular groove 331 is set on the first angular displacement ball bar ruler 32, is additionally provided in the first annular groove 331
First reading head 332, first reading head 332, which synchronizes, to be set on the first angular displacement ball bar ruler 32, when the first rotation
When being rotated on the first angular displacement ball bar ruler 32, the first reading head 332 is synchronized with the first turntable 33 around being located at first jiao platform 33
On displacement ball bar ruler 32, you can measure rotational angle and the position of the first turntable 33 in real time.
Similarly, the second rotating mechanism and the second turntable, second rotation are provided in the second cylindricality cavity 34
Platform is connected in the rotation axis of second rotating mechanism, and the second turntable bottom is provided with second annular groove, described
Second turntable bottom is set in by second annular groove rotation on the second angular displacement ball bar ruler, second ring
The second reading head is additionally provided in connected in star, second reading head is rotated synchronously with second turntable and is set in described
On second angular displacement ball bar ruler, when the second turntable on the second angular displacement ball bar ruler when rotating, the second reading head is with second turn
Dynamic platform synchronization is around being located on the second angular displacement ball bar ruler, you can measures rotational angle and the position of the second turntable in real time.
First turntable, 33 outer surface is provided centrally with first choice detection unit, and first choice detection unit is with institute
It states the first turntable 33 to rotate synchronously, the second turntable outer surface is provided centrally with the second selection detection unit, the second choosing
Detection unit is selected to rotate synchronously with second turntable.
The selection detection unit protrudes from the cylindricality cavity so that selection detection unit and the electrical contact of protrusion setting
End is in same plane, and in the selection detection unit periphery, stagger setting has a pair of conductive column, the length of the conductive column
It is consistent with the air line distance between on the inside of the turntable center to the electrical contact end, the choosing is connected on the inside of the conductive column
Select input or the output terminal of detection unit, be provided with a contact head on the outside of the conductive column, between a pair of contact head between
It is corresponding consistent away from the spacing between two adjacent electrical contact ends so that a pair of in detection unit rotation process is selected
The contact head and the adjacent two electrical contact end selective exposures.
Specifically, as shown in the figure, first choice detection unit periphery stagger setting has a pair of conductive column 41,42, conductive column
41st, the angle formed between the angle between 42 and 33 axis center of two neighboring electrical contact end and the first turntable is consistent, conductive
41 outside of column is provided with the first contact head 411, and 42 outside of conductive column is provided with the second contact head 422, when the first turntable rotates
When, conductive column 41,42 rotate synchronously, and with electrical contact end selective exposure, when adjust the first turntable rotational angle, you can
So that 422 electrical contact end conductive contact adjacent with two simultaneously of the first contact head 411 and the second contact head, such as the first contact
First 411 contact with electrical contact end 311, meanwhile, the second contact head 422 contacts simultaneously with electrical contact end 312, due to electrical contact end
311 connect with the first electric connecting terminal 217 on first fault collection unit 20, electrical contact end 312 and first fault collection
The second electric connecting terminal 218 on unit 20 connects, therefore, first choice detection unit can measure the first electric connecting terminal 217 with
Electric signal between second electric connecting terminal 218, i.e., the electric signal at first node between two the first phases of three-phase line, with
The rotation of one turntable, first choice detection unit acquire the electric signal between two the first phases of three-phase line at second node,
And so on, selection detection unit on the second failure detector 30 acquire at each node two the second phases of three-phase line it
Between electric signal, the selection detection unit on third failure detector 30 acquires two three-phase line third phases at each node
Between electric signal, angular displacement ball bar ruler and reading head are used cooperatively, accurately to control the rotational angle of turntable so that first
411 and second contact head 422 of contact head can contact every time with two neighboring electrical contact end, same to acquire two-way three-phase line
Electric signal between phase.
The contact head inner end is conductively connected with the conductive column, and the outboard end of the contact head connects with each electricity
Contravention sliding conduction contacts, and the contact head includes fixed conductive seat 121, conducting rod 122, sliding conduction seat 123 and conductive boots
124, the fixed conductive seat is connected on the conductive column, and the conducting rod is vertically set on the center of the fixed conductive seat,
The conduction boots are arranged on the sliding conduction seat, and the sliding conduction cover for seat sets activity on the conducting rod, the cunning
Moving conductive seat and the conducting rod resilient conductive contact, to provide buffer distance, the conduction boots are provided with one and are connect with the electricity
The guide groove 126 that contravention is slidably matched, a conductive cambered surface 125 being recessed inwardly is provided in the guide groove, and the conduction cambered surface is led to
An elastic component 127 is crossed to connect with the guide groove bottom conductive.The conduction cambered surface 125 is slided with the electrical contact end medial surface pastes
It closes, when turntable rotates, contact head is rotated with conductive column, is contacted until with an electrical contact end, at this point, electrical contact end slips into
Into guide groove 126, due to the sliding conduction seat and the conducting rod resilient conductive contact, and the conductive cambered surface passes through a bullet
Property part 127 is connect with the guide groove bottom conductive, and conductive cambered surface 125 and electrical contact end are effectively absorbed by two-stage Elastic Contact
Between overtravel or deficient stroke so that electrical contact end forms effective conductive contact with conductive cambered surface 125, realizes selection detection
Unit acquires the electric signal between two each phases of three-phase line at each node.
In the present embodiment, the selection detection unit include a first resistor R1 for being sequentially connected in series setting, warning light 51,
Current acquisition unit 52 and second resistance R2, first resistor R1 and second resistance R2 are big resistance so that when generation earth fault
When, big resistance grounded system is formed by first resistor R1 and second resistance R2,52 collected electric current of current acquisition unit is
For the earth current by first resistor R1 and second resistance R2.The first resistor connects the first conductive column, second electricity
Resistance the second conductive column of connection, that is, by selecting detection unit that will be connected between two a certain phases of three-phase line, pass through electric current
Collecting unit 52 acquires the electric current between two a certain phases of three-phase line, once there is electric current to pass through, warning light 51 is lighted, and is sent out and is carried
Show, during normal operation, electric current will not be generated between two any phases of three-phase line, after earth fault occurs, two triple lines
Electric current can be generated between the failure phase of road.
After earth fault occurs, the three-phase line that earth fault occurs is cut off, for example, detecting former three-phase line
After earth fault occurs for the first phase, by the first three-phase breaker K1 and third three-phase breaker K3 by former three-phase line from power grid
It is cut off in circuit, after mains-power circuit normal operation, failure being kept to occur by spare three-phase line, passes through failure detector 30
The current signal at each node on two three-phase lines between the first phase is quickly detected, specifically, first choice detection is single
Member acquires the current signal between the first phase on two three-phase lines at first node, and the second selection detection unit is last from the
The current signal on two three-phase lines between the first phase is acquired at one node, first choice detection unit is examined with the second selection
It is reversely rotated to survey unit, rotational angle is controlled by angular displacement ball bar ruler and reading head, realizes accurate quickly two-way three-phase
Current measurement between the first phase of circuit, after earth fault occurs for former the first phase of three-phase line, spare the first phase of three-phase line is just
Often operation, after the first phase on two three-phase lines is connected by selecting detection unit, spare the first phase of three-phase line passes through
The earth point of first resistor R1 and second resistance R2 to the first phase of former three-phase line forms big resistance grounded system, closer to ground connection
The earth current of point is bigger, and it is the earth current at different nodes to select the current signal that detection unit checks, and first selects
It selects detection unit and the second selection detection unit is respectively detected the earth current at different nodes from circuit both ends, accelerate
Detection speed, finally detects the node of two contact electric current maximums, i.e. earth point is happened at the line between the two nodes
On the road.
Step 5: the current signal of above-mentioned two maximum is input in an accident analysis unit, pass through accident analysis list
Member measures the differential pressure signal between the current signal of above-mentioned two maximum.
Accident analysis unit includes one difference current-voltage changer 63, two contact heads of first choice detection unit
Conducting first phase on two three-phase lines at first node of earth point, two contact heads of the second selection detection unit
Conducting first phase on two three-phase lines at second node of earth point so that at two nodes of earth point both sides
First phase of two-way three-phase line is respectively turned on, at this point, the current acquisition unit output terminal connection institute of first choice detection unit
State the first input end of difference current-voltage changer 63, the current acquisition unit output terminal connection of the second selection detection unit
Second input terminal of the difference current-voltage changer 63, after the processing of difference current-voltage changer 63, in output
State the differential pressure signal between two maximum current signals.
Step 6: the specific location of the source of trouble is determined according to above-mentioned differential pressure signal.
In order to calculate the specific location of the source of trouble, source of trouble position is calculated using a positioning analytic unit in the present embodiment
It puts.Positioning analysis unit connects the output terminal of the accident analysis unit, and a distance is provided in the positioning analysis unit and is surveyed
Module is calculated, distance exam module receives the output voltage signal of difference current-voltage changer 63, according to the output voltage signal
It can judge the relative position of earth point and two neighboring node, so as to judge the exact position of earth point, realize docking
Place is accurately positioned, and so as to improve the efficiency of the solution failure of staff, the output terminal of the distance exam module connects
A display unit and the second alarm unit are connect, display unit is used to show the position of earth point, is quickly found out convenient for staff
Earth point is overhauled, and the second alarm unit carries out alarm to the position of earth point.
In above-mentioned technical proposal, the first input end of the difference current-voltage changer 63 is by putting before one first
Big device 61 is connect with the first current acquisition cell signal output terminal on the failure detector, the difference current-voltage
Second input terminal of converter passes through one second preamplifier 62 and the second current acquisition on the failure detector
Cell signal output terminal connects, and two preamplifiers are for being amplified earth current processing, in order to difference current-electricity
Buckling parallel operation 63 tests and analyzes, and reduces signal interference, improves detection accuracy, and then improve accurate to the detection of earth point.
Meanwhile the output terminal of the difference current-voltage changer 63 passes through the defeated of a post amplifier and the distance exam module
Enter end connection, so as to be amplified to 63 output signal of difference current-voltage changer, further reduce signal interference,
Improve detection accuracy so that distance exam module is detected according to the voltage signal that difference current-voltage changer 63 exports
Earth point is more accurate.
From the above mentioned, the method for the present invention can quickly judge the nature of trouble of transmission line of electricity, and may recognize that event
Hinder the specific circuit occurred, quickly find failure to provide staff and solved in time, avoid fault coverage further
Expand, and then ensure that the reliability of transmission line of electricity；After failure occurs, by the present invention can quick positioning failure generation
Ground, so as to improve the efficiency of the solution failure of staff；Pass through the method for the present invention, it is ensured that normally supply in transmission line of electricity
Breakdown maintenance is carried out in the case of electricity, so as to solve power failure operation and influence power supply the technical issues of.
Although the embodiments of the present invention have been disclosed as above, but its be not restricted in specification and embodiment it is listed
With it can be fully applied to various fields suitable for the present invention, for those skilled in the art, can be easily
Realize other modification, therefore without departing from the general concept defined in the claims and the equivalent scope, it is of the invention and unlimited
In specific details and legend shown and described herein.
Claims (8)
1. a kind of fault source localization method, which is characterized in that include the following steps：
Step 1: the parallel connection three-phase line spare all the way on former three-phase line, three-phase line input terminal is connect with power end, it will
Three-phase line output terminal is connect with electrical equipment, is set respectively at former three-phase line initial and end end and spare three-phase line initial and end both ends
The input parallel connected end downstream that head end three-phase breaker there are one three-phase breaker, is arranged on to three-phase line described in two-way is put, it will
Tail end three-phase breaker is arranged on the output-parallel end upstream of three-phase line described in two-way；
Step 2: the first-class interval of three-phase line between the three-phase breaker of initial and end end, which is cut-off, several nodes, from each described
Three pairs of electric connecting terminals are drawn on node, wherein, per the same famous prime minister of a pair of electric connecting terminal connection two-way three-phase line；
Step 3: acquire in real time the voltage signal on the three-phase line neutral point, three-phase line described in two-way input terminal simultaneously
Electric signal on line and on output terminal parallel wire, it is single-phase to judge whether three-phase line occurs according to the voltage signal on neutral point
Earth fault, then the electric signal judgement according to two-way on the input terminal parallel wire of three-phase line and on output terminal parallel wire
The three-phase line of singlephase earth fault and failure phase occurs, the three-phase breaker at three-phase line both ends breaks where failure is occurred
It opens；
Step 4: when singlephase earth fault occurs, by failure phase on each node of scanning device continuous acquisition and separately
One three-phase line corresponds to the current signal between electric connecting terminal in phase, takes out continuous two maximum current signals, that is, judges
The source of trouble is happened in the failure phase between two adjacent nodes；
Step 5: the current signal of above-mentioned two maximum is input in an accident analysis unit, surveyed by accident analysis unit
Measure the differential pressure signal between the current signal of above-mentioned two maximum；
Step 6: the specific location of the source of trouble is determined according to above-mentioned differential pressure signal.
2. fault source as described in claim 1 localization method, which is characterized in that a failure detector is provided with,
Several electrical contact ends are provided on the failure detector, each electrical contact end is distributed in the failure detector
Periphery, while the electrical contact end is sequentially connected to same a pair electric connecting terminal on two neighboring node, it is connect in the electricity
Contravention inner space in the angular displacement ball bar ruler both sides rotates at least provided with an angular displacement ball bar ruler and is provided with a choosing respectively
Detection unit is selected, it is each that detection unit bottom is selected to be provided with the reading head that a rotation is set on the angular displacement ball bar ruler,
Driving selection detection unit rotates on angular displacement ball bar ruler, the rotational angle of reading head acquisition selection detection unit, by described in
The input of detection unit, output terminal is selected to be contacted with the adjacent two electrical contact end selective conductivities.
3. fault source as claimed in claim 2 localization method, which is characterized in that at the failure detector center two
Side opens up a cylindricality cavity respectively, and each electrical contact end is run through and protrudes from the failure detector both sides, described
Cylindricality cavity is located on the inside of the electrical contact end, in the scanning device setting cylindricality cavity；
First scanning device is set in the first cylindricality cavity, and the first scanning device specifically includes the first angular displacement ball bar ruler,
One rotating mechanism, the first turntable and first choice detection unit, it is recessed that the first angular displacement ball bar ruler protrusion is arranged on the first cylindricality
First turntable is connected in the rotation axis of first rotating mechanism by bottom of chamber portion periphery, first choice is detected single
Member is arranged on the first turntable upper surface, and the first turntable is driven in the first angular displacement ball bar ruler by the first rotating mechanism
Upper rotation；
Second scanning device is set in the second cylindricality cavity, and the second scanning device specifically includes the second angular displacement ball bar ruler,
Two rotating mechanisms, the second turntable and the second selection detection unit, it is recessed that the second angular displacement ball bar ruler protrusion is arranged on the second cylindricality
Second turntable is connected in the rotation axis of second rotating mechanism by bottom of chamber portion periphery, and the second selection detection is single
Member is arranged on the second turntable upper surface, and the second turntable is driven in the second angular displacement ball bar ruler by the second rotating mechanism
Upper rotation.
4. fault source as claimed in claim 3 localization method, which is characterized in that set in the first turntable bottom
There is first annular groove, the first turntable bottom is set in first angular displacement by first annular groove rotation
On ball bar ruler, the first reading head, first reading head and the described first rotation are additionally provided in the first annular groove
Platform is rotated synchronously and is set on the first angular displacement ball bar ruler, for measuring the rotational angle of the first turntable, with control
The input of the first choice detection unit, output terminal are contacted with the adjacent two electrical contact end selective conductivities；
Second annular groove is provided in the second turntable bottom, the second turntable bottom passes through the described second annular
Groove rotation is set on the second angular displacement ball bar ruler, and the second reading head is additionally provided in the second annular groove,
Second reading head is rotated synchronously with second turntable and is set on the second angular displacement ball bar ruler, for measuring
The rotational angle of second turntable, with control the second selection input of detection unit, output terminal with described in adjacent two
Electrical contact end selective conductivity contacts.
5. fault source as claimed in claim 4 localization method, which is characterized in that the selection detection unit outwardly protrudes
In the cylindricality cavity certain distance, in the selection detection unit periphery, stagger setting has a pair of conductive column, the conductive column
Length and the turntable center to the electrical contact end on the inside of between air line distance it is consistent, will connect on the inside of the conductive column
Input or the output terminal of the selection detection unit are connect, meanwhile, a contact head is provided on the outside of the conductive column, described in a pair
The spacing between spacing and two adjacent electrical contact ends between contact head is corresponding consistent, under the driving of rotating mechanism,
A pair of contact head is contacted with the adjacent two electrical contact end selective conductivities, by the electricity between each pair of electric connecting terminal
It flows in signal acquisition to selection detection unit.
6. fault source as claimed in claim 5 localization method, which is characterized in that the selection detection unit includes one
First resistor, warning light, current acquisition unit and the second resistance of setting are sequentially connected in series, the first resistor connection first is conductive
Column, the second resistance connect the second conductive column.
7. fault source as claimed in claim 6 localization method, which is characterized in that first choice detection unit and the second choosing
The rotation direction of detection unit is selected on the contrary, from the three-phase line both ends electricity between each pair of electric connecting terminal at different nodes respectively
Stream is detected, and finally detects the adjacent node of two electric current maximums, i.e. the source of trouble is happened at the line between the two nodes
On the road.
8. fault source as claimed in claim 7 localization method, which is characterized in that pass through the difference current-voltage
Converter acquires the differential pressure signal, and the first input end of the difference current-voltage changer passes through one first preposition amplification
Device is connect with the first current acquisition cell signal output terminal on the failure detector, the difference current-voltage transformation
Second input terminal of device is believed by the second current acquisition unit on one second preamplifier and the failure detector
The connection of number output terminal, the output terminal of the difference current-voltage changer pass through a post amplifier and the distance exam mould
The input terminal connection of block, the distance exam module are used to calculate the specific location of the source of trouble.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113960407A (en) * | 2021-08-31 | 2022-01-21 | 合肥通用机械研究院有限公司 | Line fault positioning equipment and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101551243A (en) * | 2009-04-27 | 2009-10-07 | 洛阳乾禾仪器有限公司 | Ball bar ruler |
| CN201673192U (en) * | 2010-05-11 | 2010-12-15 | 鞍山金磊特电子有限公司 | Current monitor of power transmission and distribution lines |
| CN102142674A (en) * | 2011-01-26 | 2011-08-03 | 江苏镇安电力设备有限公司 | Method for selectively clearing single-phase ground fault of ship shore power system |
| CN102656762A (en) * | 2009-12-16 | 2012-09-05 | 西门子公司 | Protection for parallel lines in an electrical power supply system |
| CN205958691U (en) * | 2016-08-27 | 2017-02-15 | 浙江科畅电子有限公司 | Distribution network earth fault positioner |
-
2017
- 2017-12-26 CN CN201711431861.5A patent/CN108169624B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101551243A (en) * | 2009-04-27 | 2009-10-07 | 洛阳乾禾仪器有限公司 | Ball bar ruler |
| CN102656762A (en) * | 2009-12-16 | 2012-09-05 | 西门子公司 | Protection for parallel lines in an electrical power supply system |
| CN201673192U (en) * | 2010-05-11 | 2010-12-15 | 鞍山金磊特电子有限公司 | Current monitor of power transmission and distribution lines |
| CN102142674A (en) * | 2011-01-26 | 2011-08-03 | 江苏镇安电力设备有限公司 | Method for selectively clearing single-phase ground fault of ship shore power system |
| CN205958691U (en) * | 2016-08-27 | 2017-02-15 | 浙江科畅电子有限公司 | Distribution network earth fault positioner |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113960407A (en) * | 2021-08-31 | 2022-01-21 | 合肥通用机械研究院有限公司 | Line fault positioning equipment and method |
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