CN104677417B - A kind of fault detection system and its detection method for transmission line of electricity - Google Patents
A kind of fault detection system and its detection method for transmission line of electricity Download PDFInfo
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- CN104677417B CN104677417B CN201410818837.7A CN201410818837A CN104677417B CN 104677417 B CN104677417 B CN 104677417B CN 201410818837 A CN201410818837 A CN 201410818837A CN 104677417 B CN104677417 B CN 104677417B
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- 238000001514 detection method Methods 0.000 title claims abstract description 47
- 230000005540 biological transmission Effects 0.000 title claims abstract description 20
- 230000005611 electricity Effects 0.000 title claims abstract description 18
- 238000012544 monitoring process Methods 0.000 claims abstract description 18
- 238000007689 inspection Methods 0.000 claims abstract description 14
- 230000001681 protective effect Effects 0.000 claims abstract description 13
- 230000007257 malfunction Effects 0.000 claims abstract description 12
- 230000001052 transient effect Effects 0.000 claims abstract description 9
- 239000004020 conductor Substances 0.000 claims abstract description 6
- 238000004891 communication Methods 0.000 claims description 14
- 230000002452 interceptive effect Effects 0.000 claims description 6
- 230000015556 catabolic process Effects 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
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- 238000010586 diagram Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000012271 agricultural production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
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Abstract
A kind of fault detection system and its detection method for transmission line of electricity of the present invention, including governor circuit, conductor vibration monitor, weather environment scope, path monitoring equipment, detection of power loss module, malfunction coefficient module, power module, radio-frequency module and fault detection module, monitoring computer；The fault detection module includes current sensor, voltage sensor, overcurrent protection module, overvoltage protective module, short trouble judge module and earth fault judge module.In the failure detector that the present invention is used, during the failure that is short-circuited, short time interior energy is voluntarily turned off after electronic switch is connected, if short trouble is transient fault, then current sensing means can't detect pulse current, and current sensing means detects pulse current if failure is permanent fault, and the type that thus can determine whether failure is transient fault or permanent fault, for the treatment of consequent malfunction provides reliable basis, so as to the inspection speed of circuit can be improved.
Description
Technical field
The present invention relates to a kind of ultra-high-tension power transmission line field of fault detection, a kind of failure inspection for transmission line of electricity is specifically related to
Examining system and its detection method.
Background technology
With the high speed development of national economy, all trades and professions it is increasing to the demand of electric power, power supply department is carried
For the quality of supply of electric power（Stability, continuity and adjoint service）It is required that also more and more higher, therefore remote high voltage power transmission
The security of the operation of power networks of circuit is particularly important.
At present, China uses 10KV circuits as the final step of high tension transmission, and this reference is very universal, 10KV circuits
As the upper level power transmission sequence of mains voltage 220V, 380V there is circuit to route relative complex, geographical environment rather harsh, together
When there is a problem of that line security runs, simultaneously because end of the 10KV circuits as trunk high-tension line, its erection method and
Working environment causes the liability of line fault；When 10KV circuits once break down, its lower line transformer can stop to
Family powers, and this failure understands the corresponding transformer platform area subordinate user power failure of assembly causes the loss of industrial and agricultural production, to the masses'
Daily life causes to have a strong impact on.And currently used line fault testing device has poor real, rate of false alarm high, it is impossible to
Realize the shortcoming of communication network fusion.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of for the fault detection system of transmission line of electricity and its detection side
Method, with conduct monitoring at all levels circuit and the running status of power network, it is to avoid detection error and trigger power grid accident, improve wireline inspection
Real-time and accuracy.
In order to solve the above technical problems, the present invention uses following technical scheme：
A kind of transmission line wire temperature online detecting system, including governor circuit, conductor vibration monitor, weather environment
Scope, path monitoring equipment, detection of power loss module, malfunction coefficient module, power module, radio-frequency module and fault detect
Module, monitoring computer；The conductor vibration detector, weather environment scope pass through the first wireless communication module and line
The input of road detection module is connected, and the output end of the wireline inspection equipment is connected with the input of governor circuit, it is described fall
Electro-detection module, the input of malfunction coefficient module are connected with the output end of governor circuit, the output end of power module and master control
The input of circuit is connected, and the output end of the governor circuit is connected by the second wireless communication module with monitoring computer, institute
The input of radio-frequency module is stated to be connected with the output end of governor circuit；The fault detection module includes current sensor, voltage
Sensor, overcurrent protection module, overvoltage protective module, short trouble judge module and earth fault judge module, the electric current
The output end of sensor is connected through overcurrent protection module with the input of short trouble judge module, short trouble judge module with
The interactive connection of main control module, the output end of the voltage sensor is through overvoltage protective module and ground protection judge module
Input is connected, and earth fault judge module and governor circuit are interactive to be connected, the output end of the overcurrent protection module with connect
The input of earth fault judge module is connected, the output end of the overvoltage protective module and the input of short trouble judge module
It is connected.
As the further improvement of above-mentioned technical proposal：
The detecting system also includes wire communication module and monitor terminal, the input of the wire communication module and master
The output end for controlling circuit is connected, and its output end is connected with the input of monitor terminal.
The current foldback circuit is by first resistor, second resistance, 3rd resistor, the 4th resistance, the 5th resistance, relay
Device, PNP type triode, NPN triode, diode, reflective diode composition；The relay includes a coil and one normally closed opens
Close, the emitter stage of the collector of the positive-negative-positive three is connected with the output end of current sensor, the colelctor electrode warp of the PNP type triode
Second resistance is connected with the anode of light emitting diode, and the negative electrode of the light emitting diode is connected with one end of coil, the positive-negative-positive
The base stage of triode is connected on the node between the 3rd resistor and the 4th resistance being serially connected, the 3rd resistor it is another
End is connected through first resistor with the emitter stage of PNP type triode, and the other end of the 4th resistance is through the 5th resistance（R5）Ground connection,
The other end of the coil is connected on the node between the 5th resistance and ground connection, the base stage of the NPN type triode and two poles
The negative electrode of pipe is connected, and the anode of diode is connected on the node between first resistor and normally closed switch, the NPN type triode
Colelctor electrode be connected with its base stage, the emitter stage of the NPN type triode is connected to the section between the 4th resistance and the 5th resistance
On point, the other end of the normally closed switch is connected with short trouble judge module.
A kind of method of transmission line wire temperature online detection, comprises the following steps：
（1）Current transformer collection current parameters are transferred to short trouble judge module and ground connection after overcurrent protection module
Breakdown judge module；
（2）The voltage parameter of collection is also transmitted to short trouble and sentenced by voltage sensor through overvoltage protective module
Disconnected module and earth fault judge module；
（3）The information that transmission line of electricity vibration-detecting instrument and meteorological environmental observation equipment will be collected passes through wireless transport module
Wireline inspection equipment is transferred to, the information that the equipment will be received sends governor circuit to after being processed；
（3）Short trouble judge module and earth fault judge module will determine that result is transferred to governor circuit respectively, main
Control circuit carries out judgement treatment according to the information for receiving according to fault type and abort situation point, and by malfunction coefficient module
Display；
（4）Two kinds of different alarms are provided according to transient fault or permanent fault respectively, and power supply signal is passed
Detection of power loss module, alert when monitoring power supply is less than normal working voltage are defeated by, and governor circuit is stopped,
Prevent misoperation；
（5）Fail operation status signal is transferred to monitor terminal by limited module, detection terminal is according to receiving
Information carries out manual maintenance.
The beneficial effects of the invention are as follows：Fault detection system of the present invention and its detection method, by conductor vibration
Detector, weather environment scope, wireline inspection equipment, monitoring computer and monitor terminal are examined to ultra-high-tension power transmission line
Survey and process, the factor for combining meteorological and environment enters the detection of row line, it is to avoid traditional detection circuit is examined in critical point
The drawbacks of not detecting, improve to the processing speed of trouble point and the reliability for judging, it is to avoid blindly by malfunction monitoring dress
The drawbacks of putting monitoring failure.In the failure detector that the present invention is used, during the failure that is short-circuited, after electronic switch connection in short-term
Between interior energy voluntarily turn off, if short trouble be transient fault, current sensing means can't detect pulse current, if failure is
Then current sensing means detects pulse current to permanent fault, thus can determine whether the type of failure for transient fault still forever
Long property failure, for the treatment of consequent malfunction provides reliable basis, so as to the inspection speed of circuit can be improved.
Brief description of the drawings
Fig. 1 is system block diagram of the invention；
Fig. 2 is the schematic diagram of overcurrent protection electric current.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.
As shown in Figure 1 and Figure 2, the transmission line wire temperature online detecting system of the present embodiment, including governor circuit 1, lead
Linearly coupled monitor 2, weather environment scope 3, path monitoring equipment 4, detection of power loss module 5, malfunction coefficient module 6, electricity
Source module 7, radio-frequency module 8, fault detection module 9, monitoring computer 12, wire communication module 14 and monitor terminal 15；Wire
Vibration-detecting instrument 2, weather environment scope 3 are by the first wireless communication module 10 and the input of line detection module 4
It is connected, the output end of wireline inspection equipment 4 is connected with the input of governor circuit 1, detection of power loss module 5, malfunction coefficient module 6
Input be connected with the output end of governor circuit 1, the output end of power module 7 is connected with the input of governor circuit 1, master control
The output end of circuit 1 is connected by the second wireless communication module 11 with computer 12 is monitored, the input of radio-frequency module 8 and master control
The output end of circuit 1 is connected；Fault detection module 9 include current sensor 91, voltage sensor 92, overcurrent protection module 93,
Overvoltage protective module 94, short trouble judge module 95 and earth fault judge module 96, the output end warp of current sensor 91
Overcurrent protection module 93 is connected with the input of short trouble judge module 95, short trouble judge module 95 and main control module 1
Interactive mode connection, the output end of voltage sensor 92 through overvoltage protective module 94 the input with ground protection judge module 96
It is connected, earth fault judge module 96 is connected with the interactive mode of governor circuit 1, the output end and earth fault of overcurrent protection module 93
The input of judge module 96 is connected, the output end of overvoltage protective module 94 and the input phase of short trouble judge module 95
Even；The input of wire communication module 14 is connected with the output end of governor circuit 1, the input of its output end and monitor terminal 15
It is connected.
Current foldback circuit 93 is by first resistor R1, second resistance R2,3rd resistor R3, the 4th resistance R4, the 5th resistance
R5, relay 20, PNP type triode Q1, NPN triode Q2, diode D1, reflective diode D2 compositions；Relay 20 includes
An one coil L and normally closed switch K, the emitter stage of the collector Q1 of positive-negative-positive three is connected with the output end of current sensor 91, positive-negative-positive three
The colelctor electrode of pole pipe Q1 is connected through second resistance R2 with the anode of light emitting diode D2, negative electrode and the coil L of light emitting diode D2
One end be connected, the base stage of PNP type triode Q1 is connected to the section between the 3rd resistor R3 and the 4th resistance R4 being serially connected
On point, the other end of 3rd resistor R3 is connected through first resistor R1 with the emitter stage of PNP type triode Q1, and the 4th resistance R4's is another
The resistance R5 of one end the 5th is grounded, and the other end of coil L is connected on the node between the 5th resistance R5 and ground connection, NPN type three
The base stage of pole pipe Q2 is connected with the negative electrode of diode D1, the anode of diode D1 be connected to first resistor R1 and normally closed switch K it
Between node on, the colelctor electrode of NPN type triode Q2 is connected with its base stage, and the emitter stage of NPN type triode Q2 is connected to the 4th
On node between resistance R4 and the 5th resistance R5, the other end of normally closed switch K is connected with short trouble judge module 95.
The collection current parameters of current transformer 91 are transferred to the He of short trouble judge module 95 after overcurrent protection module 93
Earth fault judge module 96；The voltage parameter of collection is transferred to short trouble by voltage sensor 92 through overvoltage protective module 94
Judge module 95 and earth fault judge module 96；Transmission line of electricity vibration-detecting instrument 2 and meteorological environmental observation equipment 3 will be collected
Information wireline inspection equipment 4 is transferred to by wireless transport module 10, the information that the equipment will be received processed after pass
Give governor circuit 1；Short trouble judge module 95 and earth fault judge module 96 will determine that result is transferred to master control respectively
Circuit 1, governor circuit 1 carries out judgement treatment according to information, fault type and the abort situation point for receiving, and aobvious by failure
Show that module shows；Two kinds of different alarms are provided according to transient fault or permanent fault respectively, and power supply signal is passed
Detection of power loss module 5, alert when monitoring power supply 7 is less than normal working voltage are defeated by, and governor circuit 1 is stopped work
Make, prevent misoperation；Fail operation status signal is sent to monitor terminal 15 by limited module transfer 14, detect terminal 15
Manual maintenance is carried out according to the information for receiving.
Fault detection system of the present invention and its detection method, the factor for combining meteorological and environment enter row line
Detection, it is to avoid traditional detection circuit be in critical points detection less than the drawbacks of, improve to the processing speed of trouble point and sentence
Disconnected reliability, it is to avoid the drawbacks of blindly monitoring failure by fault monitoring device.The failure detector that the present invention is used
In, during the failure that is short-circuited, short time interior energy is voluntarily turned off after electronic switch is connected, if short trouble is transient fault,
Current sensing means 91 can't detect pulse current, and current sensing means 91 detects pulse electricity if failure is permanent fault
Stream, thus can determine whether the type of failure for transient fault or permanent fault, for the treatment of consequent malfunction provides reliability
Foundation, so as to the inspection speed of circuit can be improved.
Those skilled in the art it should be appreciated that the implementation method of the above be intended merely to explanation the present invention,
And be not used as being limitation of the invention, as long as within spirit of the invention, being made to above example
It is appropriate to change and change all to fall within the scope of protection of present invention.
Claims (4)
1. a kind of fault detection system for transmission line of electricity, it is characterised in that：Including governor circuit（1）, conductor vibration monitoring
Instrument（2）, weather environment scope（3）, wireline inspection equipment（4）, detection of power loss module（5）, malfunction coefficient module（6）, electricity
Source module（7）, radio-frequency module（8）And fault detection module（9）, monitoring computer（12）；The conductor vibration detector（2）、
Weather environment scope（3）Pass through the first wireless communication module（10）With wireline inspection equipment（4）Input be connected, institute
State wireline inspection equipment（4）Output end and governor circuit（1）Input be connected, the detection of power loss module（5）, failure show
Show module（6）Input and governor circuit（1）Output end be connected, power module（7）Output end and governor circuit（1）'s
Input is connected, the governor circuit（1）Output end pass through the second wireless communication module（11）With monitoring computer（12）Phase
Even, the radio-frequency module（8）Input and governor circuit（1）Output end be connected；The fault detection module（9）Including electricity
Flow sensor（91）, voltage sensor（92）, overcurrent protection module（93）, overvoltage protective module（94）, short trouble judge mould
Block（95）With earth fault judge module（96）, the current sensor（91）Output end through overcurrent protection module（93）With it is short
Road breakdown judge module（95）Input be connected, short trouble judge module（95）With governor circuit（1）Interactive mode connection, institute
State voltage sensor（92）Output end through overvoltage protective module（94）With ground protection judge module（96）Input phase
Even, earth fault judge module（96）With governor circuit（1）Interactive mode connection, the overcurrent protection module（93）Output end with
Earth fault judge module（96）Input be connected, the overvoltage protective module（94）Output end and short trouble judge mould
Block（95）Input be connected.
2. the fault detection system for transmission line of electricity according to claim 1, it is characterised in that：The detecting system is also
Including wire communication module（14）And monitor terminal（15）, the wire communication module（14）Input and governor circuit（1）
Output end be connected, its output end and monitor terminal（15）Input be connected.
3. the fault detection system for transmission line of electricity according to claim 1, it is characterised in that：The overcurrent protection mould
Block（93）By first resistor（R1）, second resistance（R2）, 3rd resistor（R3）, the 4th resistance（R4）, the 5th resistance（R5）, relay
Device（20）, PNP type triode（Q1）, NPN triode（Q2）, diode（D1）, reflective diode（D2）Composition；The relay
（20）Including a coil（L）And a normally closed switch（K）, the emitter stage and current sensor of the PNP type triode (Q1)（91）
Output end be connected, the PNP type triode（Q1）Colelctor electrode through second resistance（R2）With light emitting diode（D2）Anode
It is connected, the light emitting diode（D2）Negative electrode and coil（L）One end be connected, the PNP type triode（Q1）Base stage connect
It is connected on the 3rd resistor being serially connected（R3）With the 4th resistance（R4）Between node on, the 3rd resistor（R3）The other end
Through first resistor（R1）With PNP type triode（Q1）Emitter stage be connected, the 4th resistance（R4）The other end through the 5th electricity
Resistance（R5）Ground connection, the coil（L）The other end be connected to the 5th resistance（R5）On node between ground connection, the NPN type
Triode（Q2）Base stage and diode（D1）Negative electrode be connected, diode（D1）Anode be connected to first resistor（R1）With it is normal
Make and break is closed（K）Between node on, the NPN type triode（Q2）Colelctor electrode be connected with its base stage, the NPN type triode
（Q2）Emitter stage be connected to the 4th resistance（R4）With the 5th resistance（R5）Between node on, the normally closed switch（K）It is another
One end and short trouble judge module（95）It is connected.
4. the detection method of a kind of fault detection system for transmission line of electricity, it is characterised in that comprise the following steps：
（1）Current transformer collection current parameters are transferred to short trouble judge module and earth fault after overcurrent protection module
Judge module；
（2）The voltage parameter of collection is also transmitted to short trouble judge module and ground connection by voltage sensor through overvoltage protective module
Breakdown judge module；
（3）The information that transmission line of electricity vibration-detecting instrument and meteorological environmental observation equipment will be collected is transmitted by wireless transport module
Wireline inspection equipment is given, the information that the equipment will be received sends governor circuit to after being processed；
（3）Short trouble judge module and earth fault judge module will determine that result is transferred to governor circuit, master control electricity respectively
Road carries out judgement treatment according to the information for receiving according to fault type and abort situation point, and aobvious by malfunction coefficient module
Show；
（4）Two kinds of different alarms are provided according to transient fault or permanent fault respectively, and power supply signal is transferred to
Detection of power loss module, alert when monitoring power supply is less than normal working voltage, and governor circuit is stopped, prevent
Misoperation；
（5）Fail operation status signal is transferred to monitor terminal by wire communication module, detection terminal is according to receiving
Information carries out manual maintenance.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410818837.7A CN104677417B (en) | 2014-12-25 | 2014-12-25 | A kind of fault detection system and its detection method for transmission line of electricity |
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| CN201410818837.7A CN104677417B (en) | 2014-12-25 | 2014-12-25 | A kind of fault detection system and its detection method for transmission line of electricity |
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| CN112834962A (en) * | 2021-02-02 | 2021-05-25 | 国网山东省电力公司龙口市供电公司 | Comprehensive detection device for power transmission and distribution line |
| CN113113967A (en) * | 2021-04-08 | 2021-07-13 | 嘉兴学院 | Power transmission line detection system |
| CN113959558B (en) * | 2021-09-24 | 2024-01-16 | 深圳飞赛精密钣金技术有限公司 | Wind deflection and ground wire vibration monitoring method, system and device and storage medium |
| CN114336551A (en) * | 2022-01-14 | 2022-04-12 | 贵州大学 | Flexible direct current transmission system fault protection system based on MMC |
| CN115994047B (en) * | 2023-03-23 | 2023-06-09 | 山东科技大学 | Fault diagnosis and emergency processing method and system for underwater data acquisition unit |
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