CN107390088A - A kind of high-tension cable oversheath malfunction detector and application method - Google Patents
A kind of high-tension cable oversheath malfunction detector and application method Download PDFInfo
- Publication number
- CN107390088A CN107390088A CN201710582824.8A CN201710582824A CN107390088A CN 107390088 A CN107390088 A CN 107390088A CN 201710582824 A CN201710582824 A CN 201710582824A CN 107390088 A CN107390088 A CN 107390088A
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- CN
- China
- Prior art keywords
- casing
- cable
- ammeter
- interface
- receiver
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- G01R31/083—Locating faults in cables, transmission lines, or networks according to type of conductors in cables, e.g. underground
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
Abstract
The present invention relates to fault detection technique field, especially a kind of high-tension cable oversheath malfunction detector, including casing, transformer is provided with the casing, High voltage output interface is provided with outside the casing, power interface and power switch, the low-pressure end of the transformer is connected by wire with power interface, the high-pressure side of the transformer is connected by wire with High voltage output interface, the power switch and transformer series, the invention also provides a kind of application method of high-tension cable oversheath malfunction detector, the cable jacket pressure test regulation of the invention for meeting chinese national standard GB50150 2006 comprehensively, cable jacket commissioning test and the fault location of preventive trial and cable jacket including being adapted to cross interconnected system.
Description
Technical field
The present invention relates to fault detection technique field, more particularly to a kind of high-tension cable oversheath malfunction detector and use
Method.
Background technology
With being in full swing for urban network restructuring, many power supply administrations, construction party, even designing unit are all to encounter first
110kVXLPE cables, due to it is pressed for time and lacking experience, outer jacket can't pass pressure test after causing many cable layings
(10kV/1min).At present, outer jacket uses HDPE protective cover materials mostly, passes through direct current 25kV/5min pressure-resistant examination in factory
Test, leakage current as little as tens μ A.Therefore, after laying the defects of mostly by laying, including banket and cover plate during external force
Damage institute is extremely.Postrun defect generally has termite to bite；Grounding box is intake；The deterioration of native defect point；It is grounded furcation
Moisture vapor transmission is divided to make insulaion resistance decline etc. reason, sometimes because cable burial is too deep, or ambient conditions are complicated, make positioning very tired
Difficulty, some defect points leave hidden danger after can not solve for many years to operation.A kind of new malfunction detector is needed for this.
The content of the invention
The invention aims to solve to have the shortcomings that being inconvenient to detect failure in the prior art, and the one kind proposed
High-tension cable oversheath malfunction detector and application method.
To achieve these goals, present invention employs following technical scheme：
A kind of high-tension cable oversheath malfunction detector, including casing are designed, transformer, the case are provided with the casing
High voltage output interface, power interface and power switch are provided with outside body, the low-pressure end of the transformer is connect by wire and power supply
Mouth connection, the high-pressure side of the transformer are connected by wire with High voltage output interface, the power switch and transformer series,
Side is rotatablely equipped with case lid outside the casing, and receiver, A cabinet frames and current receiv pincers are provided with the case lid.
The A cabinet frames include crossbeam, and the two bottom sides of the crossbeam are vertically provided with probe, and the both ends of the crossbeam turn
Dynamic one end for being connected with spiral arm, the other end of one of them spiral arm are connected with the handle parallel with crossbeam, described in another
The other end of spiral arm is connected by bolt with handle, and connecting line is connected with one of them described spiral arm, and the receiver includes
Shell, shell are provided with the second ammeter and input interface.
Preferably, it is provided with voltmeter and the first ammeter outside the casing, the voltmeter is kilovoltmeter, described first
Ammeter is milliammeter, and the voltmeter is in parallel with step-up side by wire, first ammeter and transformer string
Connection.
Preferably, start button, power supply indicator and scram button, the start button, electricity are provided with outside the casing
Source indicator lamp and scram button and transformer series.
Preferably, be provided with ground interface outside the casing, the ground interface is connected with ground wire, it is described be grounded and
Cabinet wall connects.
Preferably, voltage-regulation knob is provided with outside the casing, potentiometer, the voltage-regulation are provided with the casing
Knob is connected with potentiometer, and the potentiometer is connected on step-up side.
The invention also provides a kind of application method of high-tension cable oversheath malfunction detector, comprise the following steps：
S1：Ground interface is connected using ground wire, High voltage output interface and cable under test is connected using high-voltage line, uses power supply
Line connects power interface and AC220V power supplys；
S2：Power-on switchs and presses start button, rotational voltage adjusting knob, observes voltmeter and the first electric current
Table, select suitable voltage output；
S3：Using the oversheath failure of step voltage method test direct-buried cable, it is comprised the following steps that：
A1：The expansion of A cabinet frames is assembled, connecting line is connected with the input interface on receiver；
A2：Along the path of cable, the surface of the cable in the range of thick side, the probe of A cabinet frames is inserted into underground, seen
Examine the size and Orientation of the second ammeter of receiver；
A3：Keep the tandem of the probe of A cabinet frames constant, directly over the path of cable, the position for the A cabinet frames that constantly move forward
Put, it is noted that the second ammeter instruction of observation receiver, first finds out the location that polarity changes, then exist again during this
Find out the point that fluctuating signal is " 0 ", i.e. trouble point in the location；
S4：The cable cover(ing) trouble point laid using current method testing tunnel, it is comprised the following steps that：
B1：Current receiv is clamped and is connected with receiver, in the range of the thick side of failure, current receiv pincers are stuck on cable,
Observe the size and Orientation of the second ammeter of receiver；
B2：Keep the direction of current receiv pincers constant, the position for the current receiv pincers that constantly move forward, it is noted that seeing during this
The second ammeter instruction of receiver is examined, the location that polarity changes first is found out, then finds out fluctuating signal in the location again
For the point of " 0 ", i.e. trouble point；
S5：Scram button and disconnecting power switch are pressed, disconnects the line of cable under test and power supply.
A kind of high-tension cable oversheath malfunction detector proposed by the present invention and application method, beneficial effect are：This hair
The bright cable jacket pressure test regulation for meeting chinese national standard GB50150-2006 comprehensively, including it is adapted to cross interconnected system
The cable jacket commissioning test of system and the fault location of preventive trial and cable jacket.Quick and precisely search 10kv-
500kv singles and three core high pressures, extra-high-tension cable oversheath earth fault and the hidden danger such as leakage current is bigger than normal, while can be to highly dense
Polyethylene, polyvinyl chloride cable oversheath progress 5kv-10kv are spent, the DC break down voltage experiment of 1 minute, is 10kv-500kv singles
Tieed up with the cable machinery of three core high pressures, extra-high-tension cable run unit, extra-high-tension cable engineering company, each transmission and transformation engineering company
Protect indispensable instrumentation.
Brief description of the drawings
Fig. 1 is a kind of high-tension cable oversheath malfunction detector proposed by the present invention and the structural representation of application method；
Fig. 2 is the structure of a kind of high-tension cable oversheath malfunction detector proposed by the present invention and the receiver of application method
Schematic diagram；
Fig. 3 is the structure of a kind of high-tension cable oversheath malfunction detector proposed by the present invention and the A cabinet frames of application method
Schematic diagram.
In figure：Casing 1, start button 2, power supply indicator 3, scram button 4, High voltage output interface 5, receiver 6, case lid
7th, A cabinet frames 8, current receiv pincers 9, ground interface 10, power interface 11, power switch 12, voltmeter 13, voltage-regulation knob
14th, the first ammeter 15, the second ammeter 16, input interface 17, handle 18, connecting line 19, crossbeam 20, probe 21, spiral arm 22.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.
Reference picture 1-3, a kind of high-tension cable oversheath malfunction detector, including casing 1, casing 1 is interior to be provided with transformer, case
The outside of body 1 is provided with High voltage output interface 5, power interface 11 and power switch 12, and the low-pressure end of transformer passes through wire and power supply
Interface 11 is connected, and the high-pressure side of transformer is connected by wire with High voltage output interface 5, power switch 12 and transformer series,
The outside side of casing 1 is rotatablely equipped with case lid 7, and receiver 6, A cabinet frames 8 and current receiv pincers 9 are provided with case lid 7.Power interface
11 are used to be connected with power supply, and transformer is used to 220V voltages being changed into high-pressure delivery, and power switch 12 leads to for control circuit
It is disconnected.
A cabinet frames 8 include crossbeam 20, and the two bottom sides of crossbeam 20 are vertically provided with probe 21, and the both ends of crossbeam 20 rotate
One end of spiral arm 22 is connected with, the other end of one of spiral arm 22 is connected with the handle 18 parallel with crossbeam 20, another rotation
The other end of arm 22 is connected by bolt with handle 18, and connecting line 19 is connected with one of spiral arm 22, and receiver 6 includes outer
Shell, shell are provided with the second ammeter 16 and input interface 17.A cabinet frames 8 are used for voltage method test and used, and cantilever 22 can rotate
Fold, reduce space-consuming, be easy to carry.
The outside of casing 1 is provided with the ammeter 15 of voltmeter 13 and first, and voltmeter 13 is kilovoltmeter, and the first ammeter 15 is milli
Pacify table, voltmeter 13 is in parallel with step-up side by wire, the first ammeter 15 and transformer series.Set outside casing 1
There are start button 2, power supply indicator 3 and scram button 4, start button 2, power supply indicator 3 and scram button 4 and transformer string
Connection.The outside of casing 1 is provided with ground interface 10, and ground interface 10 is connected with ground wire, and ground wire is connected with the inwall of casing 1.Casing 1
Outside is provided with voltage-regulation knob 14, is provided with potentiometer in casing 1, voltage-regulation knob 14 is connected with potentiometer, potentiometer string
It is associated on step-up side.The ammeter 15 of voltmeter 13 and first coordinates voltage-regulation knob 14 to carry out output power voltage
Regulation, ground interface 10 are used to connect ground wire, prevent from leaking electricity, improve security.
The invention also provides a kind of application method of high-tension cable oversheath malfunction detector, comprise the following steps：
S1：Ground interface is connected using ground wire, High voltage output interface 5 and cable under test is connected using high-voltage line, uses electricity
Source line connection power interface 11 and AC220V power supplys；
S2：Power-on switch 12 simultaneously presses start button, rotational voltage adjusting knob 14, observes voltmeter 13 and first
Ammeter 15, select suitable voltage output；
S3：Using the oversheath failure of step voltage method test direct-buried cable, it is comprised the following steps that：
A1：The expansion of A cabinet frames 8 is assembled, connecting line 19 is connected with the input interface 17 on receiver 6；
A2：Along the path of cable, the surface of the cable in the range of thick side, the probe 21 of A cabinet frames 8 is inserted ground
Under, the size and Orientation of the second ammeter 16 of observation receiver 6；
A3：Keep the tandem of the probe 21 of A cabinet frames 8 constant, directly over the path of cable, constantly move forward A cabinet frames 8
Position, during this it is noted that observation receiver 6 the second ammeter 16 indicate, first find out the location that polarity changes,
Then the point that fluctuating signal is " 0 ", i.e. trouble point are found out in the location again；
S4：The cable cover(ing) trouble point laid using current method testing tunnel, it is comprised the following steps that：
B1：Current receiv pincers 9 are connected with receiver 6, in the range of the thick side of failure, current receiv pincers 9 are stuck in cable
On, the size and Orientation of the second ammeter 16 of observation receiver 6；
B2：Keep the direction of current receiv pincers 9 constant, the position for the current receiv pincers 9 that constantly move forward, during this it is noted that
Second ammeter 16 of observation receiver 6 indicates, first finds out the location that polarity changes, then finds out pulsation in the location again
Signal is the point of " 0 ", i.e. trouble point；
S5：Scram button 4 and disconnecting power switch 12 are pressed, disconnects the line of cable under test and power supply.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its
Inventive concept is subject to equivalent substitution or change, should all be included within the scope of the present invention.
Claims (6)
1. a kind of high-tension cable oversheath malfunction detector, including casing (1), it is characterised in that：It is provided with and becomes in the casing (1)
Depressor, the casing (1) is outside to be provided with High voltage output interface (5), power interface (11) and power switch (12), the transformer
Low-pressure end be connected by wire with power interface (11), the high-pressure side of the transformer passes through wire and High voltage output interface
(5) connect, the power switch (12) and transformer series, the outside side of the casing (1) is rotatablely equipped with case lid (7), institute
State and receiver (6), A cabinet frames (8) and current receiv pincers (9) are provided with case lid (7)；
The A cabinet frames (8) include crossbeam (20), and the two bottom sides of the crossbeam (20) are vertically provided with probe (21), the horizontal stroke
The both ends of beam (20) are rotatably connected to one end of spiral arm (22), and the other end of one of them spiral arm (22) is connected with and horizontal stroke
The parallel handle (18) of beam (20), the other end of another spiral arm (22) is connected by bolt with handle (18), wherein one
Connecting line (19) is connected with the individual spiral arm (22), the receiver (6) includes shell, and shell is provided with the second ammeter
And input interface (17) (16).
A kind of 2. high-tension cable oversheath malfunction detector according to claim 1, it is characterised in that：The casing (1)
Outside is provided with voltmeter (13) and the first ammeter (15), and the voltmeter (13) is kilovoltmeter, first ammeter (15)
For milliammeter, the voltmeter (13) is in parallel with step-up side by wire, first ammeter (15) and transformer
Series connection.
A kind of 3. high-tension cable oversheath malfunction detector according to claim 1, it is characterised in that：The casing (1)
Outside is provided with start button (2), power supply indicator (3) and scram button (4), the start button (2), power supply indicator (3)
With scram button (4) and transformer series.
A kind of 4. high-tension cable oversheath malfunction detector according to claim 1, it is characterised in that：The casing (1)
Outside is provided with ground interface (10), and the ground interface (10) is connected with ground wire, and the ground wire connects with casing (1) inwall
Connect.
A kind of 5. high-tension cable oversheath malfunction detector according to claim 1, it is characterised in that：The casing (1)
Outside is provided with voltage-regulation knob (14), and potentiometer, the voltage-regulation knob (14) and potentiometer are provided with the casing (1)
Connection, the potentiometer are connected on step-up side.
A kind of 6. application method of high-tension cable oversheath malfunction detector according to claim 1-5, it is characterised in that
Comprise the following steps：
S1：Ground interface is connected using ground wire, High voltage output interface (5) and cable under test is connected using high-voltage line, uses power supply
Line connection power interface (11) and AC220V power supplys；
S2：Power-on switch (12) simultaneously presses start button, rotational voltage adjusting knob (14), observation voltmeter (13) and the
One ammeter (15), selects suitable voltage output；
S3：Using the oversheath failure of step voltage method test direct-buried cable, it is comprised the following steps that：
A1：A cabinet frames (8) expansion is assembled, connecting line (19) is connected with the input interface (17) on receiver (6)；
A2：Along the path of cable, the surface of the cable in the range of thick side, the probe (21) of A cabinet frames (8) is inserted ground
Under, the size and Orientation of the second ammeter (16) of observation receiver (6)；
A3：Keep the tandem of the probe (21) of A cabinet frames (8) constant, directly over the path of cable, constantly move forward A cabinet frames
(8) position, it is noted that the second ammeter (16) instruction of observation receiver (6), first finds out polarity and change during this
Location, then find out in the location point that fluctuating signal is " 0 ", i.e. trouble point again；
S4：The cable cover(ing) trouble point laid using current method testing tunnel, it is comprised the following steps that：
B1：Current receiv is clamped into (9) to be connected with receiver (6), in the range of the thick side of failure, current receiv is clamped into (9) and is stuck in electricity
On cable, the size and Orientation of the second ammeter (16) of observation receiver (6)；
B2：Keep the direction of current receiv pincers (9) constant, the position for the current receiv pincers (9) that constantly move forward, during this it is noted that
The second ammeter (16) instruction of receiver (6) is observed, the location that polarity changes first is found out, is then found out again in the location
Fluctuating signal is the point of " 0 ", i.e. trouble point；
S5：Scram button (4) and disconnecting power switch (12) are pressed, disconnects the line of cable under test and power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710582824.8A CN107390088A (en) | 2017-07-17 | 2017-07-17 | A kind of high-tension cable oversheath malfunction detector and application method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710582824.8A CN107390088A (en) | 2017-07-17 | 2017-07-17 | A kind of high-tension cable oversheath malfunction detector and application method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107390088A true CN107390088A (en) | 2017-11-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710582824.8A Pending CN107390088A (en) | 2017-07-17 | 2017-07-17 | A kind of high-tension cable oversheath malfunction detector and application method |
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| CN (1) | CN107390088A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111856208A (en) * | 2020-07-17 | 2020-10-30 | 山东科汇电力自动化股份有限公司 | Ultrahigh-voltage cable sheath fault point positioning device and method |
| CN113484670A (en) * | 2021-06-25 | 2021-10-08 | 国网山东省电力公司曲阜市供电公司 | Cable fault detector and use method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111856208A (en) * | 2020-07-17 | 2020-10-30 | 山东科汇电力自动化股份有限公司 | Ultrahigh-voltage cable sheath fault point positioning device and method |
| CN111856208B (en) * | 2020-07-17 | 2023-09-19 | 山东科汇电力自动化股份有限公司 | Device and method for positioning fault point of ultra-high voltage cable sheath |
| CN113484670A (en) * | 2021-06-25 | 2021-10-08 | 国网山东省电力公司曲阜市供电公司 | Cable fault detector and use method |
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