CN205506995U - Overhead line monitoring and fault indication device based on from networking model - Google Patents
Overhead line monitoring and fault indication device based on from networking model Download PDFInfo
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- CN205506995U CN205506995U CN201521057246.9U CN201521057246U CN205506995U CN 205506995 U CN205506995 U CN 205506995U CN 201521057246 U CN201521057246 U CN 201521057246U CN 205506995 U CN205506995 U CN 205506995U
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Abstract
The utility model aims at providing a self -configuration, equipment room plug -and -play, safe and reliable's overhead line monitoring and fault indication device based on from networking model can carry out. The utility model discloses a collection module, communication module, monitoring analysis module, fault indication unit, collection module is used for real -time collecting wire way voltage and electric current information, communication module adopts zigbee communication module to carry out the mesh network deployment for data transmission and synchro control are accomplished in interconnection between the implementation system, the monitoring analysis module be used for data collection and handle, and when trouble -free, target electric current, voltage discrete data obtained circuit electric current, voltage data just often when the extraction was taken send realization on -line monitoring in backstage on, when breaking down, punctum when confirming through the self -adaptation that phase to earth fault takes place, assay circuit transient state capacitance current confirms to break down the place looks, the fault indication unit is used for fault indication. The utility model discloses can be applied to electric energy equipment field.
Description
Technical field
This utility model relates to electric energy device field, particularly relates to the monitoring of a kind of overhead transmission line based on adhoc mode and accident indicator.
Background technology
Along with the application of existing fault indicator for overhead lines is more and more extensive, the requirement to fault detector is more and more higher, and wherein breakdown judge is always a difficulties the most over the ground.Present situation is at present: one, distribution network shelf structure is presented below as multiformity, 1, neutral grounding mode be directly grounded, through low resistance grounding, big resistance eutral grounding and through grounding through arc, the eigenvalue that each earthed system shows when there is ground short circuit is the most different；2, distribution line is complicated, and branched line is many, and networking mode has the different modes such as looped network type, radial pattern, mixed type.Two, overhead transmission line indicator is all self-contained unit, it is impossible to carry out the comparison analysis of adjacent parameter, and ground connection judges all as isolating a single point as criterion.Three, traditional distance-finding method based on impedance principle, traveling wave method, signal injection method and voltage-to-ground detection method is done Earth Fault Detection and all be there is impracticable, inaccurate and limitation.
Conventional overhead line-failure indicator is single isolated modular unit, and the public monitoring means of multiple fault detection units, data communication mode is point-to-points mode, there is several shortcoming；Tradition RF module communication distance maximum can only accomplish 1KM, and single system extendible indicating fault element number is limited, the phenomenon that communication is not gone up or disconnected very likely occurs when being disturbed；Realize sharing difficulty at the time information that breaks down between indicating fault unit big, it is impossible to realize adjacent parameter comparison and analyze.
Utility model content
Technical problem to be solved in the utility model is to overcome the deficiencies in the prior art, it is provided that a kind of can carry out self-configuring, the monitoring of equipment room plug and play, safe and reliable overhead transmission line based on adhoc mode and accident indicator.
The technical scheme is that this utility model of this utility model include acquisition module, communication module, monitoring analyze module, indicating fault unit, wherein,
Described acquisition module is used for Real-time Collection line voltage distribution and current information, and a cycle gathers 16 point data, and acquisition module storage data length 160 point, each storage data stamp system markers, within system markers resolution is accurate to 1ms；
Described communication module uses zigbee communication module to carry out mesh networking, is used for realizing interconnecting between system, completes data transmission and Synchronization Control；
Described monitoring analyze module be used for gathering data and processing, when fault-free, target electric current, voltage dispersion data during extraction belt, obtain circuit normal time electric current, voltage data, above send backstage to realize line status on-line monitoring；When a failure occurs, determine that singlephase earth fault generation moment point, analysis circuit transient state capacitance current determine the place phase that breaks down by self adaptation；
Described indicating fault unit is used for indicating fault.
This utility model uses mesh networking technology between node and node, overcome the node Dependence Problem of point-to-points mechanics of communication, each indicating fault unit is a radio node carrying routing function, use multi-hop technology, the data of equipment room easily realize interconnection and share, and interconnection equipment quantity does not has the upper limit in theory；In wireless mesh network, if to add new equipment, it is only necessary to connecting with the mains simply the most permissible, it can self-configure automatically, and determine optimal multi-hop transmission path；This advantage is suitable for the upgrading of existed system, transformation the most very much, does not worries any system-level dilatation and transform measure, the most easily realizes the plug and play of equipment；Additionally, this utility model is easy to use, practical, reliability is high.
Further, described acquisition module includes that line current detects electronic mutual inductor, line-to-earth voltage sensing capacitor based on line-to-ground electric field, advance signal modulate circuit, ADC and memory module, described acquisition module Real-time Collection line current, voltage signal, described ADC is delivered to after signal condition, ADC is the circuit of circuit, voltage analog signal is converted to discrete digital signal, plus each time value gathering the moment during storage of each digital signal point, when forming band, target data are to communication module, module is analyzed in monitoring and indicating fault unit is standby.
The most further, described monitoring is analyzed module and is included adaptive sine wave filter；When power system is properly functioning, the error between the output of adaptive sine wave filter and the actually detected input signal of power system is the least；When inputting the change that sinusoidal signal occurs deviation normal condition, error will increase；When power system is broken down, input signal is by acute variation, and its error will become the biggest.According to the prediction to power system input signal of the adaptive sine wave filter, calculate the change with regard to traceable input signal of its forecast error, react rapidly and sensitively when breaking down and start.
Again the most further, described indicating fault unit uses the indicating mode of light flash and/or board turning instruction to indicate fault；Utilize light flash can be implemented in night fault to be indicated；Utilize board turning can carry out indicating fault in the daytime, thus realize whole day instruction in 24 hours.
The beneficial effects of the utility model are: this utility model uses mesh networking technology, overcome the node Dependence Problem of point-to-points mechanics of communication, each indicating fault unit is a radio node carrying routing function, use multi-hop technology, the data of equipment room easily realize interconnection and share, and interconnection equipment quantity does not has the upper limit in theory.In wireless mesh network, if adding new equipment, have only to connect with the mains simply the most permissible, it can self-configure automatically, and determine optimal multi-hop transmission path, when interpolation or mobile device, network can find change in topology automatically, and automatically adjust communication lines by, to obtain maximally effective transmission path, being truly realized the plug-and-play feature of individual equipment, this advantage is suitable for the upgrading of existed system, transformation the most very much, do not worry any system-level dilatation and transform measure, the most easily realize the plug and play of equipment；Data sharing principle based on ad hoc network, it is achieved the comparison analysis of Fault transient data determines that guilty culprit is separate and fault section；Owing to being affected by the aspect such as fault moment and earth resistance, existing residual voltage amplitude is utilized to determine that the sensitivity of singlephase earth fault exact time is the highest.The fault moment capture of this utility model application self-adapting waveform comparison, can determine rapidly that fault occurs the moment.
Accompanying drawing explanation
Fig. 1 is system principle diagram of the present utility model；
Fig. 2 is sinusoidal adaptive schematic diagram；
Fig. 3 is point-to-points networking structure schematic diagram in prior art；
Fig. 4 is mesh networking schematic diagram.
Detailed description of the invention
Such as Fig. 1, shown in 2 and 4, in the present embodiment, this utility model is analyzed module by acquisition module, monitoring, communication module, indicating fault unit module four part form.
Acquisition module 1 includes 1 line current detection electronic mutual inductor, 1 line-to-earth voltage sensing capacitor based on line-to-ground electric field, advance signal modulate circuit, ADC, memory module；This module Real-time Collection line current, voltage, ADC is sent after signal condition, ADC is converted to discrete digital signal the circuit of circuit, voltage analog signal, plus each time value gathering the moment when each digital signal point stores, when i.e. forming band, target data are standby to communication module, monitoring analysis module and indicating fault unit.
Band markers electric current, the voltage data that module 2 timing extraction acquisition module 1 obtains is analyzed in monitoring, the normal electric current of circuit, voltage effective value is obtained by software algorithm, gained virtual value is fixed time to be spaced and is passed to corresponding monitoring sub-station by communication module, it is achieved remote online monitoring.The diagnosis of module line fault to be completed is analyzed in monitoring, including phase-to phase fault and singlephase earth fault.Phase-to phase fault monitoring uses traditional stream principle of crossing to realize.Single phase earth fault detection principle is described as follows:
When after circuit generation singlephase earth fault, the voltage-to-ground of fault phase reduces, and healthy phases voltage raises.Thus will produce discharge capacity electric current and charging capacitor electric current respectively, both are superimposed i.e. constitutes transient state capacitance current.Wherein, discharge capacity electric current forms loop between trouble point, the fault phase of faulty line, bus and the fault phase of non-fault line, and the inductance in loop is relatively small, therefore the frequency of oscillation of this electric current is higher, decay very fast；And charging current forms loop between trouble point, faulty line fault phase, transformator (power supply), bus and the healthy phases of all circuits, owing to the inductance in this loop is relatively big, therefore the frequency of oscillation of this electric current is low, decay is slower.Analyzing the band markers current data that module extracts all acquisition modules storage in region of breaking down, identical moment point data convert, the frequency of oscillation of Compare System and the rate of decay are accurately positioned guilty culprit point.
Monitoring is analyzed module and is simultaneously introduced the principle of adaptive sine wave filter, u (t) in Fig. 2 is an externally input signal, y (t)=bsin (ω t)+abcos (ω t) is that Design Theory constructs adaptive sine ripple, e (t) is that u (t) and f (t) compares gained difference signal, along with being continually changing of input signal, sinusoidal cycles input signal time-independent to amplitude in signal and phase place carries out approximation process and obtains f (t).When power system is properly functioning, the error e (t) between the output of adaptive sine wave filter and the actually detected input signal of power system is the least；When inputting the change that sinusoidal signal occurs deviation normal condition, error e (t) will increase；When power system is broken down, input signal is by acute variation, and its error e (t) will become the biggest.According to the prediction to power system input signal of the adaptive sine wave filter, calculate the change with regard to traceable input signal of its forecast error e (t), react rapidly and sensitively when breaking down and start.
Communication module 3 abandons the networking model of " point-to-multipoint " that use power system traditional, selects mesh networking mode, and main communication module is selected has long transmission distance, zigbee module low in energy consumption.Each node in mesh network carries routing function, and whole network data is not affected by distance or individual node quality.
Indicating fault unit module 4 receives monitoring and analyzes the instruction information realization malfunction instruction on the spot of reporting to the police of module, uses traditional light flash (instruction at night) and board turning instruction (instruction on daytime).
This utility model can be applicable to electric energy device field.
Claims (3)
1. an overhead transmission line based on adhoc mode monitoring and accident indicator, it is characterised in that: it includes that acquisition module, communication module, monitoring analyze module, indicating fault unit, wherein,
Described acquisition module is used for Real-time Collection line voltage distribution and current information, and a cycle gathers 16 point data, and acquisition module storage data length 160 point, each storage data stamp system markers, within system markers resolution is accurate to 1ms；
Described communication module uses zigbee communication module to carry out mesh networking, is used for realizing interconnecting between system, completes data transmission and Synchronization Control；
Described monitoring analyze module be used for gathering data and processing, when fault-free, target electric current, voltage dispersion data during extraction belt, obtain circuit normal time electric current, voltage data, above send backstage to realize line status on-line monitoring；When a failure occurs, determine that singlephase earth fault generation moment point, analysis circuit transient state capacitance current determine the place phase that breaks down by self adaptation；
Described indicating fault unit is used for indicating fault；
Described monitoring is analyzed module and is included adaptive sine wave filter.
A kind of overhead transmission line based on adhoc mode the most according to claim 1 monitoring and accident indicator, it is characterized in that: described acquisition module includes that line current detects electronic mutual inductor, line-to-earth voltage sensing capacitor based on line-to-ground electric field, advance signal modulate circuit, ADC and memory module, described acquisition module Real-time Collection line current, voltage signal, described ADC is delivered to after signal condition, ADC is the circuit of circuit, voltage analog signal is converted to discrete digital signal, plus each time value gathering the moment during storage of each digital signal point, when forming band, target data are to communication module, module is analyzed in monitoring and indicating fault unit is standby.
A kind of overhead transmission line based on adhoc mode the most according to claim 1 monitoring and accident indicator, it is characterised in that: described indicating fault unit uses the indicating mode of light flash and/or board turning instruction to indicate fault.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201521057246.9U CN205506995U (en) | 2015-12-17 | 2015-12-17 | Overhead line monitoring and fault indication device based on from networking model |
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| CN201521057246.9U CN205506995U (en) | 2015-12-17 | 2015-12-17 | Overhead line monitoring and fault indication device based on from networking model |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106707098A (en) * | 2016-11-29 | 2017-05-24 | 国网冀北电力有限公司张家口供电公司 | Overhead line discharge drainage on-line monitoring and precision positioning device and method |
| CN111665416A (en) * | 2020-05-30 | 2020-09-15 | 河北新天科创新能源技术有限公司 | Overhead line fault indicating device |
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2015
- 2015-12-17 CN CN201521057246.9U patent/CN205506995U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106707098A (en) * | 2016-11-29 | 2017-05-24 | 国网冀北电力有限公司张家口供电公司 | Overhead line discharge drainage on-line monitoring and precision positioning device and method |
| CN106707098B (en) * | 2016-11-29 | 2023-10-17 | 国网冀北电力有限公司张家口供电公司 | Device and method for online monitoring and accurate positioning of discharge leakage flow of overhead line |
| CN111665416A (en) * | 2020-05-30 | 2020-09-15 | 河北新天科创新能源技术有限公司 | Overhead line fault indicating device |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160824 Termination date: 20201217 |