CN109061396A - A kind of power distribution network traveling wave fault positioning method, apparatus and system - Google Patents
A kind of power distribution network traveling wave fault positioning method, apparatus and system Download PDFInfo
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- CN109061396A CN109061396A CN201811177291.6A CN201811177291A CN109061396A CN 109061396 A CN109061396 A CN 109061396A CN 201811177291 A CN201811177291 A CN 201811177291A CN 109061396 A CN109061396 A CN 109061396A
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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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
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- 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
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- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The present invention relates to technical field of power systems, specifically disclose a kind of power distribution network traveling wave fault positioning method, wherein include: the transient voltage and transient current data of each detection node on the real-time transmission line of electricity for obtaining power distribution network；The transient voltage and transient current data that will acquire form test point waveform；The waveform formed according to same test point in different time by adjusting the time determine earliest detection to fault waveform route；For all test points on the more same route of route of the earliest detection to the fault waveform waveform formed and the reference waveform that prestores, determine earliest detection to failure two detection nodes；The specific location that failure occurs is calculated according to the line condition of the detection time of the two of earliest detection to failure detection nodes and fault waveform.The invention also discloses a kind of power distribution network Location Equipment for Travel Wave and systems.Power distribution network traveling wave fault positioning method provided by the invention can fast and accurately realize fault location.
Description
Technical field
The present invention relates to technical field of power systems more particularly to a kind of power distribution network traveling wave fault positioning methods, power distribution network
Location Equipment for Travel Wave and power distribution network Travelling Wave Fault Location system including power distribution network Location Equipment for Travel Wave.
Background technique
In electric system, in order to be safely operated and need of work, it is often necessary to by certain a part and the earth of electric system
It is attached, this is ground connection.Currently, Neutral Grounding Modes of Power System is broadly divided into: high resistance ground, earth-free, extinguishing arc
It encloses ground connection, low-impedance earthed system, reactance grounded and is directly grounded.And first three then due to failure when, exist in ground path higher
Impedance, leads to earth current very little, the even less than load current in power distribution network, therefore referred to as small current neutral grounding system.Small
In current grounding system, the fault type of route mainly has three phase short circuit fault, two-phase short-circuit fault, line to line fault ground fault
And single phase grounding fault.In addition, there are also transitional fault and disconnection faults.The operating experience of electric system shows
The probability that single phase grounding fault occurs is maximum.
Small current neutral grounding system is generallyd use in China's power distribution network, after singlephase earth fault occurs, due to small current system
Short-circuit loop is not constituted, system can continue to run after the failure occurred 1 to 2 hour.Therefore, using small current neutral grounding mode to confession
Electric reliability has remarkable effect.But lower long-play of nonserviceabling, the overvoltage (especially arc overvoltage) of appearance, can
The weak link of insulation can be caused breakdown, develop into phase fault, make fault spread, influence the normal electricity consumption of user.Also
Voltage transformer iron core may be made seriously to be saturated, lead to the serious overload of voltage transformer and burn, threaten the safety fortune of power grid
Row.Therefore, how to be quickly and accurately positioned singlephase earth fault and position occurs, have for the stable operation of electric system
Significance.
When distribution line breaks down, the localization method of more traditional failure is by veteran operation work people
The information that member combined power user provides, diagnoses possible location of accident, then sends track walker to the live line inspection
Confirmation abort situation is simultaneously debugged.This manual method wastes a lot of manpower and material resources, and due in small current system
The reasons such as its fault current of singlephase earth fault is faint, lead to position relatively difficult, traditional manual method and are unable to satisfy reality
Needs in power distribution network.
Therefore, how to provide one kind fast and accurately can become this field by one-phase earthing failure in electric distribution network locating scheme
Technical staff's technical problem urgently to be resolved.
Summary of the invention
The present invention is directed at least solve one of the technical problems existing in the prior art, a kind of power distribution network traveling wave fault is provided
Localization method, power distribution network Location Equipment for Travel Wave and the power distribution network traveling wave fault including power distribution network Location Equipment for Travel Wave are determined
Position system, to solve the problems of the prior art.
As the first aspect of the invention, a kind of power distribution network traveling wave fault positioning method is provided, wherein the power distribution network
Traveling wave fault positioning method includes:
The transient voltage and transient current data of each detection node on the transmission line of electricity of power distribution network are obtained in real time；
The transient voltage and transient current data that will acquire form test point waveform, wherein the test point waveform
The waveform that the waveform and same test point formed including all test points being located on same route is formed in different time；
Determine that each line fault waveform goes out in the waveform that different time is formed according to same test point by adjusting the time
Existing time sequencing, and determine earliest detection to fault waveform route；
The waveform formed for all test points on the more same route of route of the earliest detection to fault waveform
With the reference waveform prestored, determine earliest detection to failure two detection nodes；
Calculated according to the line condition of the detection time of the two of earliest detection to failure detection nodes and fault waveform therefore
Hinder the specific location occurred.
Preferably, every route is provided with circuit number, and each detection node is provided with detection node number.
Preferably, the transient voltage and transient state electricity of each detection node on the real-time transmission line of electricity for obtaining power distribution network
Flow data includes the transient voltage and transient current number of each detection node on the real-time A phase transmission line of electricity for obtaining power distribution network
According to, obtain the transient voltage and transient current data and reality of each detection node on the B phase transmission line of electricity of power distribution network in real time
Apply the transient voltage and transient current data of each detection node on the C phase transmission line of electricity for obtaining power distribution network.
As the second aspect of the invention, a kind of power distribution network Location Equipment for Travel Wave is provided, wherein the power distribution network
Location Equipment for Travel Wave includes:
Module is obtained, the acquisition module is used to obtain the temporary of each detection node on the transmission line of electricity of power distribution network in real time
State voltage and transient current data；
Waveform formation module, the transient voltage and transient current data that the waveform formation module is used to will acquire
Test point waveform is formed, wherein the test point waveform includes the waveform that all test points on the same route are formed and same
The waveform that one test point is formed in different time；
Faulty line determining module, the faulty line determining module according to same test point in different time for forming
Waveform determine time sequencing that each line fault waveform occurs by adjusting the time, and determine earliest detection to fault waveform
Route；
Malfunctioning node determining module, the malfunctioning node determining module are used to arrive fault waveform for the earliest detection
The waveform that all test points on the more same route of route are formed and the reference waveform prestored, determine earliest detection to failure
Two detection nodes；
Abort situation computing module, the abort situation computing module are used to be detected according to two of earliest detection to failure
The detection time of node and the line condition of fault waveform calculate the specific location that failure occurs.
As third aspect of the present invention, a kind of power distribution network Travelling Wave Fault Location system is provided, wherein the power distribution network row
Wave fault location system includes acquisition device, the previously described power distribution network traveling wave fault of converging device and setting on the server
Positioning device,
The acquisition device in real time acquire power distribution network transmission line of electricity on each detection node transient voltage and
Transient current data；
The converging device is for by the transient voltage of each detection node on the transmission line of electricity of the power distribution network and temporarily
State current data carries out data safe processing, and by the transient state of each detection node on the transmission line of electricity of treated power distribution network
Voltage and transient current data are sent to the power distribution network Location Equipment for Travel Wave；
The power distribution network Location Equipment for Travel Wave is according to the transient state of each detection node on the transmission line of electricity of power distribution network
Voltage and transient current data are handled and calculate the specific location of failure generation.
Preferably, the acquisition device includes the first acquisition device, the second acquisition device and third acquisition device, and described the
The transient voltage and transient current of each detection node on A phase transmission line of electricity of one acquisition device for acquiring power distribution network in real time
Data, the transient state electricity of each detection node of second acquisition device on the B phase transmission line of electricity of acquisition power distribution network in real time
Pressure and transient current data, each detection of the third acquisition device on the C phase transmission line of electricity of acquisition power distribution network in real time
The transient voltage and transient current data of node.
Preferably, first acquisition device, second acquisition device and the third acquisition device include acquisition
Unit, A/D converting unit, the first storage unit and the first communication unit,
The acquisition unit in real time acquire power distribution network transmission line of electricity on each detection node transient voltage and
Transient current data；
The A/D converting unit is used to the transient voltage and transient current data carrying out analog-to-digital conversion, obtains transient state
The digital signal of voltage and transient current；
First storage unit be used to store each detection node on the transmission line of electricity of power distribution network transient voltage and
Transient current data；
First communication unit with the converging device for being communicated.
Preferably, first acquisition device, second acquisition device and the third acquisition device also include
One power supply unit, the first power source unit is for providing electric energy.
Preferably, the converging device includes data processing unit, clock synchronization unit, the second storage unit, the second communication unit
Member and third communication unit,
The data processing unit is for the transient voltage to each detection node on the transmission line of electricity of power distribution network and temporarily
State current data carries out data safe processing；
The clock synchronization unit with the server for setting time；
Second storage unit is used for each detection section on the transmission line of electricity of the power distribution network after data safe processing
The transient voltage and transient current data of point are stored；
Second communication unit with the acquisition device for being communicated；
The third communication unit with the server for being communicated.
Preferably, the converging device further includes second power source unit, and the second power source unit is for providing electric energy.
Power distribution network traveling wave fault positioning method provided by the invention, by obtaining power distribution network operating condition in real time, in failure
The position of failure generation can quick and precisely be navigated to, while being capable of root according to the power distribution network wave recording got when generation
The fault waveform saved when factually provides data to the distribution network failure analysis of causes and supports, power distribution network traveling wave provided by the invention
Fault signature when Fault Locating Method can be according to line fault is rapidly and accurately positioned, and can effectively safeguard that power grid is set
It is standby, power supply reliability is improved, the working strength of staff is reduced, has great importance.
Detailed description of the invention
The drawings are intended to provide a further understanding of the invention, and constitutes part of specification, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the flow chart of power distribution network traveling wave fault positioning method provided by the invention.
Fig. 2 is the specific embodiment flow chart of power distribution network traveling wave fault positioning method provided by the invention.
Fig. 3 is the structural schematic diagram of power distribution network Location Equipment for Travel Wave provided by the invention.
Fig. 4 is the structural schematic diagram of power distribution network Travelling Wave Fault Location system provided by the invention.
Fig. 5 is the specific embodiment structural schematic diagram of power distribution network Travelling Wave Fault Location system provided by the invention.
Fig. 6 is the specific embodiment structural schematic diagram of acquisition device provided by the invention.
Fig. 7 is the specific embodiment structural schematic diagram of converging device provided by the invention.
Specific embodiment
Below in conjunction with attached drawing, detailed description of the preferred embodiments.It should be understood that this place is retouched
The specific embodiment stated is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
As the first aspect of the invention, a kind of power distribution network traveling wave fault positioning method is provided, wherein as shown in Figure 1,
The power distribution network traveling wave fault positioning method includes:
The transient voltage and transient current number of S110, in real time each detection node on the transmission line of electricity of acquisition power distribution network
According to；
S120, the transient voltage that will acquire and transient current data form test point waveform, wherein the detection
Point waveform includes the wave that the waveform that all test points on same route are formed and same test point are formed in different time
Shape；
S130, each line fault wave is determined in the waveform that different time is formed by adjusting the time according to same test point
Shape occur time sequencing, and determine earliest detection to fault waveform route；
S140, on the more same route of route of the earliest detection to fault waveform all test points formed
Waveform and the reference waveform prestored, determine earliest detection to failure two detection nodes；
S150, according to the detection time of two detection nodes of earliest detection to failure and the line condition meter of fault waveform
Calculate the specific location that failure occurs.
Power distribution network traveling wave fault positioning method provided by the invention, by obtaining power distribution network operating condition in real time, in failure
The position of failure generation can quick and precisely be navigated to, while being capable of root according to the power distribution network wave recording got when generation
The fault waveform saved when factually provides data to the distribution network failure analysis of causes and supports, power distribution network traveling wave provided by the invention
Fault signature when Fault Locating Method can be according to line fault is rapidly and accurately positioned, and can effectively safeguard that power grid is set
It is standby, power supply reliability is improved, the working strength of staff is reduced, has great importance.
Specifically, every route is provided with circuit number, and each detection node is provided with detection node number.
Specifically, the transient voltage and transient state electricity of each detection node on the real-time transmission line of electricity for obtaining power distribution network
Flow data includes the transient voltage and transient current number of each detection node on the real-time A phase transmission line of electricity for obtaining power distribution network
According to, obtain the transient voltage and transient current data and reality of each detection node on the B phase transmission line of electricity of power distribution network in real time
Apply the transient voltage and transient current data of each detection node on the C phase transmission line of electricity for obtaining power distribution network.
It is carried out below with reference to specific work process of the Fig. 2 to power distribution network traveling wave fault positioning method provided by the invention detailed
Description.
Step S1, deployment system, including installation acquisition device, converging device, server, whether test macro system function
Normally.
Step S2, to system typing essential information, essential information includes the label of the number of each route, node, and with inspection
It is corresponding to survey node.In addition, essential information further includes the spatial information of each detection detection node, such as the sequence and node of detection node
The distance between.
Step S3 starts the transient current and transient voltage that acquire each detection node, and data are uploaded to backstage in real time
Server.
Step S4 judges whether that distribution network failure occurs.
Step S5 logs in background server, into power distribution network traveling wave fault Precise Position System.
Step S6, compares each wireline inspection waveform, and staff may occur according to the route choosing that failure occurs first
The specific route of failure shows each route (including basic routing line and branch route) detection waveform on background server.
Step S7, determines faulty line, and the time sequencing of each line fault waveform trip is compared by adjusting the time,
Determine earliest detection to fault waveform route.
Step S8 determines two nodes of discovery failure earliest.After determining faulty line, selected on background server
The waveform for showing each detection node of faulty line, compares the waveform of each detection node, determines two inspections of earliest detection to failure
Survey node.
Step S9, the detection time of two nodes of record earliest detection to fault waveform.
Step S10, in power distribution network traveling wave fault Precise Position System typing faulty line, malfunctioning node, detection time.
Step S11, system calculate out of order specific location according to line information, nodal information and detection time.
It is understood that the number that background server searches possible faulty line is logged in after distribution network failure occurs,
Incoming line number, checks the waveform situation of each route.The sequencing that fault waveform occurs after analysis comparison, determines fault wire
Road number.The circuit number is inputted, checks the waveform situation of all detection nodes of the route, time slip-window finds earliest hair
Two detection nodes number of existing fault waveform.The circuit number and node serial number that output fault waveform occurs earliest, at the same it is defeated
Enter the time of two node failure waveforms, system will calculate automatically position of failure point according to calculation formula.
The following are calculation formula, circuit number and node serial number of the system according to input, the relevant information in lookup system,
Automatically the distance T between the two nodes is calculated, detection node 1 receives the time value t1 of fault waveform, and detection node 2 receives event
Hinder the time value t2 of waveform, wave transmissions speed is V (V takes 300000Km/s).Distance of the position of failure point apart from detection node 1
For T1, the distance apart from detection node 2 is T2.Then there is calculation equation:
Position of failure point is calculated between node 1 and cautious 2, is cut apart from 1 distance of node:
As the second aspect of the invention, a kind of power distribution network Location Equipment for Travel Wave is provided, wherein as shown in figure 3,
The power distribution network Location Equipment for Travel Wave 10 includes:
Obtain module 110, each detection section on the transmission line of electricity for obtaining module 110 for obtaining power distribution network in real time
The transient voltage and transient current data of point；
Waveform formation module 120, the transient voltage and the transient state electricity that the waveform formation module 120 is used to will acquire
Flow data forms test point waveform, wherein the test point waveform includes the wave that all test points on same route are formed
The waveform that shape and same test point are formed in different time；
Faulty line determining module 130, the faulty line determining module 130 are used for according to same test point when different
Between the waveform that is formed by adjusting the time determine time sequencing that each line fault waveform occurs, and determine earliest detection to former
Hinder the route of waveform；
Malfunctioning node determining module 140, the malfunctioning node determining module 140 are used for for the earliest detection to failure
The waveform that all test points on the more same route of the route of waveform are formed and the reference waveform prestored, determine that earliest detection arrives
Two detection nodes of failure；
Abort situation computing module 150, the abort situation computing module 150 are used for according to the two of earliest detection to failure
The detection time of a detection node and the line condition of fault waveform calculate the specific location that failure occurs.
Power distribution network Location Equipment for Travel Wave provided by the invention, by obtaining power distribution network operating condition in real time, in failure
The position of failure generation can quick and precisely be navigated to, while being capable of root according to the power distribution network wave recording got when generation
The fault waveform saved when factually provides data to the distribution network failure analysis of causes and supports, power distribution network traveling wave provided by the invention
Fault signature when fault locator can be according to line fault is rapidly and accurately positioned, and can effectively safeguard that power grid is set
It is standby, power supply reliability is improved, the working strength of staff is reduced, has great importance.
As the third aspect of the invention, a kind of power distribution network Travelling Wave Fault Location system is provided, wherein as shown in figure 4,
The power distribution network Travelling Wave Fault Location system 1 includes acquisition device 20, the institute above of converging device 30 and setting on the server
The power distribution network Location Equipment for Travel Wave 10 stated,
The transient voltage of each detection node on transmission line of electricity of the acquisition device 20 for acquiring power distribution network in real time
With transient current data；
The converging device 30 be used for the transient voltage of each detection node on the transmission line of electricity of the power distribution network and
Transient current data carry out data safe processing, and by the temporary of each detection node on the transmission line of electricity of treated power distribution network
State voltage and transient current data are sent to the power distribution network Location Equipment for Travel Wave；
The power distribution network Location Equipment for Travel Wave 10 is temporary according to each detection node on the transmission line of electricity of power distribution network
State voltage and transient current data are handled and calculate the specific location of failure generation.
Power distribution network Travelling Wave Fault Location system provided by the invention, by obtaining power distribution network operating condition in real time, in failure
The position of failure generation can quick and precisely be navigated to, while being capable of root according to the power distribution network wave recording got when generation
The fault waveform saved when factually provides data to the distribution network failure analysis of causes and supports, power distribution network traveling wave provided by the invention
Fault signature when fault location system can be according to line fault is rapidly and accurately positioned, and can effectively safeguard that power grid is set
It is standby, power supply reliability is improved, the working strength of staff is reduced, has great importance.
Specifically, in order to realize the acquisition respectively to A phase, B phase and C phase, the acquisition device include the first acquisition device,
Second acquisition device and third acquisition device, first acquisition device for acquiring the A phase transmission line of electricity of power distribution network in real time
Each detection node transient voltage and transient current data, second acquisition device in real time acquire power distribution network B
The transient voltage and transient current data of each detection node on phase transmission line of electricity, the third acquisition device for adopting in real time
Collect the transient voltage and transient current data of each detection node on the C phase transmission line of electricity of power distribution network.
Power distribution network Travelling Wave Fault Location system provided by the invention, as shown in figure 5, include acquisition device, converging device and
Server.The acquisition device is installed on the transmission line of electricity of power distribution network, and A, B, C three-phase respectively install an acquisition device, three
A acquisition device is nearby equipped with a center convergence node, and acquisition device is communicated with converging device using wireless WIFI.Institute
After stating converging device collection three-phase acquisition device data packaging ciphering, communicated using 3G/4G with server, by data transmission
To server.The data of multiple aggregation nodes are shown by the server according to the number of node.When failure occurs, clothes
Business device will calculate position of failure point according to the time difference of the collected fault wave of the acquisition device of fault point two sides.It services simultaneously
Device records the waveform of primary fault wave, provides data supporting for failure reason analysis.
It should be noted that the converging device includes multiple aggregation nodes.
Specifically, first acquisition device, second acquisition device and the third acquisition device include acquisition
Unit, A/D converting unit, the first storage unit and the first communication unit,
The acquisition unit in real time acquire power distribution network transmission line of electricity on each detection node transient voltage and
Transient current data；
The A/D converting unit is used to the transient voltage and transient current data carrying out analog-to-digital conversion, obtains transient state
The digital signal of voltage and transient current；
First storage unit be used to store each detection node on the transmission line of electricity of power distribution network transient voltage and
Transient current data；
First communication unit with the converging device for being communicated, and specifically, first communication unit is used
In the control instruction for receiving the converging device, and by the transient state of each detection node on the transmission line of electricity of the power distribution network
Voltage and transient current data are sent to the converging device.
In order to realize the normal work of acquisition device, first acquisition device, second acquisition device and described
Three acquisition devices also include first power source unit, and the first power source unit is for providing electric energy.
Preferably, first communication unit is short range wireless transmission unit.
Specifically, as shown in fig. 6, the acquisition device include acquisition unit, it is A/D converting unit, the first storage unit, short
Range wireless transmission unit, battery, charhing unit.
The acquisition unit includes signal acquisition sensor and signal conditioning circuit.The signal acquisition sensor include but
It is not limited to tunnel magneto resistance sensor, Rogowski coil, electronic type CT, to acquire the electric current and voltage value of transmission line of electricity.It is described
Signal conditioning circuit will carry out the operation such as level lifting, filtering to collected signal, to meet sample requirement.
The A/D converting unit completes data sampling, the analog signal of acquisition unit is converted into digital signal.
First storage element acquires signal sequence for recycling storage in short-term, and storage data quantity is smaller, to cope with
There is a situation where data can not upload to center convergence node when emergency, which is deposited using circulation covering pattern
Storage only saves 15 minutes data.
The short range wireless transmission unit of the acquisition device is for the communication with converging device, to upload acquisition device
Data and receive center convergence node control information.Communication mode includes but is not limited to wireless WIFI, 2.4G, ZigBee etc.
Short distance multinode communication.
The battery of the acquisition device is used for the power supply of acquisition device, and the charhing unit of the acquisition device is for acquiring dress
The power supply set and battery charging.The charhing unit of the acquisition device includes but is not limited to that CT electricity-fetching module, photovoltaic take
Electric module, wind energy electricity-fetching module.CT electricity-fetching module is installed on transmission line of electricity, solar energy electricity-fetching module and wind energy electricity-fetching module peace
Loaded on shaft tower.The charhing unit of acquisition device has anti-reverse charging protection circuit, when cell voltage is higher than charhing unit, acquisition
The charhing unit of device no longer charges the battery, and prevents battery reverse charge.
Specifically, the converging device includes data processing unit, clock synchronization unit, the second storage unit, the second communication unit
Member and third communication unit,
The data processing unit is for the transient voltage to each detection node on the transmission line of electricity of power distribution network and temporarily
State current data carries out data safe processing；
The clock synchronization unit with the server for setting time；
Second storage unit is used for each detection section on the transmission line of electricity of the power distribution network after data safe processing
The transient voltage and transient current data of point are stored；
Second communication unit with the acquisition device for being communicated, and specifically, second communication unit is used
In issuing control instruction to the acquisition device, and receive on the transmission line of electricity of the power distribution network that the acquisition device is sent
Each detection node transient voltage and transient current data；
The third communication unit with the server for being communicated, and specifically, the third communication unit is used for
Control instruction is sent to the server, and on the transmission line of electricity for sending treated power distribution network to the server
The transient voltage and transient current data of each detection node.
Preferably, second communication unit includes short range wireless transmission unit, and the third communication unit includes length
Range wireless transmission unit.
Specifically, the converging device further includes second power source unit, and the second power source unit is for providing electric energy.
Specifically, as shown in fig. 7, the converging device includes short range wireless transmission unit, data processing unit, clock synchronization
Unit, the second storage unit, battery, charhing unit, long-distance radio communication unit.
The short range wireless transmission unit is for the communication with acquisition device, the data to receiving front-end acquisition device
Control information is issued with forward end acquisition device.Communication mode includes but is not limited to the short distances such as wireless WIFI, 2.4G, ZigBee
Multinode communication.
The data processing unit for will be handled, added timestamp from the data of acquisition device, being encrypted, in order to
Background server is sent, and assuring data security.
The long-distance radio communication mode is under the data transmission and order between center convergence node and server
Hair.Long-distance radio communication mode includes but is not limited to 3G, 4G communication.
The clock synchronization unit guarantees the synchronousness of each acquisition device for setting time with background server.
Second storage unit saves the data of aggregation node for the short time, and number when emergency occurs to cope with
The case where according to background server can not be uploaded to.The storage unit only saves nearest 1 minor clock using circulation covering memory module
Data.
The battery of the converging device is for being powered converging device.
The charhing unit of the converging device is used for being powered and charging to converging device.Converging device charhing unit
Including but not limited to power supply adaptor, CT electricity-fetching module, photovoltaic electricity-fetching module, wind energy electricity-fetching module.The power supply is suitable
Orchestration is used for center convergence near nodal 220V power source charges situation, and the CT electricity-fetching module nearby has transmission of electricity for converging device
Line condition, the scene that the photovoltaic electricity-fetching module, wind energy electricity-fetching module are used to be easily installed.
Specifically, the server includes mass storage disc array, display, mouse and keyboard, data processing exhibition
Show module, power supply unit.
The server mass storage disc array is used to store the data that the converging device uploads, installation acquisition dress
It is larger to set data volume, cuts that there are high concurrents, it is therefore desirable to carry out data storage using massive store hard disk array.The clothes
The display of business device is for carrying out data displaying.The mouse and keyboard of the server are used to carry out data storage management system
Operation.
The data processing of the server and display unit are used to collect the processing and displaying of signal, realize a plurality of route
Multiple acquisition node signal waveforms, show on same interface according to node serial number.Simultaneously exhibition can be adjusted according to time sequencing
Show that image content, time slip-window adjust the detection waveform of the correspondence time shown, the signal waveform time of same showing interface
Length is adjustable, in order to the position for fast and accurately finding the route of failure generation, the time that failure occurs, failure occur.
The power supply unit of the server is used for the power supply of background server.
It is understood that the principle that embodiment of above is intended to be merely illustrative of the present and the exemplary implementation that uses
Mode, however the present invention is not limited thereto.For those skilled in the art, essence of the invention is not being departed from
In the case where mind and essence, various changes and modifications can be made therein, these variations and modifications are also considered as protection scope of the present invention.
Claims (10)
1. a kind of power distribution network traveling wave fault positioning method, which is characterized in that the power distribution network traveling wave fault positioning method includes:
The transient voltage and transient current data of each detection node on the transmission line of electricity of power distribution network are obtained in real time；
The transient voltage and transient current data that will acquire form test point waveform, wherein the test point waveform includes
The waveform that the waveform and same test point that all test points on same route are formed are formed in different time；
Determine what each line fault waveform occurred in the waveform that different time is formed according to same test point by adjusting the time
Time sequencing, and determine earliest detection to fault waveform route；
The waveform that is formed for all test points on the more same route of route of the earliest detection to fault waveform and pre-
The reference waveform deposited, determine earliest detection to failure two detection nodes；
Failure hair is calculated according to the line condition of the detection time of the two of earliest detection to failure detection nodes and fault waveform
Raw specific location.
2. power distribution network traveling wave fault positioning method according to claim 1, which is characterized in that every route is respectively provided with wired
Road number, each detection node are provided with detection node number.
3. power distribution network traveling wave fault positioning method according to claim 1, which is characterized in that the real-time acquisition power distribution network
Transmission line of electricity on transient voltage and the transient current data of each detection node include that the real-time A phase for obtaining power distribution network is transmitted electricity
The transient voltage and transient current data of each detection node on route are obtained in real time on the B phase transmission line of electricity of power distribution network
The transient voltage and transient current data of each detection node and implementation obtain each inspection on the C phase transmission line of electricity of power distribution network
Survey the transient voltage and transient current data of node.
4. a kind of power distribution network Location Equipment for Travel Wave, which is characterized in that the power distribution network Location Equipment for Travel Wave includes:
Obtain module, the transient state electricity of each detection node on the transmission line of electricity for obtaining module for obtaining power distribution network in real time
Pressure and transient current data；
Waveform formation module, the transient voltage and transient current data that the waveform formation module is used to will acquire are formed
Test point waveform, wherein the test point waveform includes the waveform and same inspection that all test points on same route are formed
The waveform that measuring point is formed in different time；
Faulty line determining module, the faulty line determining module are used for the wave formed according to same test point in different time
Shape by adjusting the time determine each line fault waveform occur time sequencing, and determine earliest detection to fault waveform line
Road；
Malfunctioning node determining module, the malfunctioning node determining module are used for the route for the earliest detection to fault waveform
The waveform that all test points on more same route are formed and the reference waveform prestored determine earliest detection to two of failure
Detection node；
Abort situation computing module, the abort situation computing module are used for two detection nodes according to earliest detection to failure
Detection time and fault waveform line condition calculate failure occur specific location.
5. a kind of power distribution network Travelling Wave Fault Location system, which is characterized in that the power distribution network Travelling Wave Fault Location system includes adopting
Acquisition means, the power distribution network Location Equipment for Travel Wave as claimed in claim 4 of converging device and setting on the server,
The transient voltage and transient state of each detection node on transmission line of electricity of the acquisition device for acquiring power distribution network in real time
Current data；
The converging device is used for the transient voltage of each detection node on the transmission line of electricity of the power distribution network and transient state electricity
Flow data carries out data safe processing, and by the transient voltage of each detection node on the transmission line of electricity of treated power distribution network
The power distribution network Location Equipment for Travel Wave is sent to transient current data；
The power distribution network Location Equipment for Travel Wave is according to the transient voltage of each detection node on the transmission line of electricity of power distribution network
The specific location of failure generation is handled and calculated with transient current data.
6. power distribution network Travelling Wave Fault Location system according to claim 5, which is characterized in that the acquisition device includes the
One acquisition device, the second acquisition device and third acquisition device, first acquisition device for acquiring the A phase of power distribution network in real time
The transient voltage and transient current data of each detection node on transmission line of electricity, second acquisition device for acquiring in real time
The transient voltage and transient current data of each detection node on the B phase transmission line of electricity of power distribution network, the third acquisition device
The transient voltage and transient current data of each detection node on C phase transmission line of electricity for acquiring power distribution network in real time.
7. power distribution network Travelling Wave Fault Location system according to claim 6, which is characterized in that first acquisition device,
Second acquisition device and the third acquisition device include acquisition unit, A/D converting unit, the first storage unit and
One communication unit,
The transient voltage and transient state of each detection node on transmission line of electricity of the acquisition unit for acquiring power distribution network in real time
Current data；
The A/D converting unit is used to the transient voltage and transient current data carrying out analog-to-digital conversion, obtains transient voltage
With the digital signal of transient current；
First storage unit is used to store the transient voltage and transient state of each detection node on the transmission line of electricity of power distribution network
Current data；
First communication unit with the converging device for being communicated.
8. power distribution network Travelling Wave Fault Location system according to claim 7, which is characterized in that first acquisition device,
Second acquisition device and the third acquisition device also include first power source unit, and the first power source unit is for mentioning
For electric energy.
9. power distribution network Travelling Wave Fault Location system according to claim 5, which is characterized in that the converging device includes number
According to processing unit, clock synchronization unit, the second storage unit, the second communication unit and third communication unit,
The data processing unit is used for transient voltage and the transient state electricity to each detection node on the transmission line of electricity of power distribution network
Flow data carries out data safe processing；
The clock synchronization unit with the server for setting time；
Second storage unit is used for each detection node on the transmission line of electricity of the power distribution network after data safe processing
Transient voltage and transient current data are stored；
Second communication unit with the acquisition device for being communicated；
The third communication unit with the server for being communicated.
10. power distribution network Travelling Wave Fault Location system according to claim 9, which is characterized in that the converging device also wraps
Second power source unit is included, the second power source unit is for providing electric energy.
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