CN106093704A - The monitoring of a kind of electrical network stealing user and localization method and system - Google Patents
The monitoring of a kind of electrical network stealing user and localization method and system Download PDFInfo
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- CN106093704A CN106093704A CN201610424104.4A CN201610424104A CN106093704A CN 106093704 A CN106093704 A CN 106093704A CN 201610424104 A CN201610424104 A CN 201610424104A CN 106093704 A CN106093704 A CN 106093704A
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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
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
- G01R11/02—Constructional details
- G01R11/24—Arrangements for avoiding or indicating fraudulent use
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/0038—Circuits for comparing several input signals and for indicating the result of this comparison, e.g. equal, different, greater, smaller (comparing pulses or pulse trains according to amplitude)
-
- 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
- G01R31/088—Aspects of digital computing
Abstract
The invention discloses monitoring and the localization method of a kind of electrical network stealing user, by comparing the size of the total current value of current value sum and inflow network load side at all load buses of electrical network outgoing, tentatively determine whether exception electrical phenomena, current error ratio further according to each branch road compares with predetermined current error rate threshold value, finally determines the position of stealing user.Also disclose that system based on the method simultaneously.The present invention need not substantial amounts of hardware and software and puts into, it is simple to computer realizes.
Description
Technical field
The present invention relates to monitoring and localization method and the system of a kind of electrical network stealing user, belong to electric power electrical domain.
Background technology
How power grid electric management efficiently solves a stealing problem always pendulum difficult problem in face of power supply enterprise.Certain
A little units or individual take various method to attempt to escape electric energy metrical and illegal profit by fair means or foul, and this electricity filching behavior is always
Legitimate rights and interests and the interests of power supply enterprise in serious harm, and that has upset justice supplies electricity consumption order simultaneously, returns power industry
Stable operation brings many potential safety hazards.So, study and to inquire into Prevention Stealing Electricity Technology significant.
Common stealing mode, mainly has under-voltage method, undercurrent method, phase-shifting method, expansion difference method and without table method.Propose corresponding simultaneously
Preventing and treating stealing technical measures, mainly have utilize metering box special, close transformer low voltage leading-out terminal leading to metering device
Body, employing lead sealing technology, improvement ammeter external structure carry out electricity theft prevention behavior etc., and electricity theft prevention is played by these measures of proposition
Certain containment effect, but these measures are owing to lacking monitoring in real time, so effectiveness is poor.And traditional stealing is used
In family monitoring and location technology, need to put into substantial amounts of hardware and software, be not easy to computer and realize.
Summary of the invention
In order to solve above-mentioned technical problem, the invention provides the monitoring of a kind of electrical network stealing user and localization method and be
System.
In order to achieve the above object, the technical solution adopted in the present invention is:
The monitoring of a kind of electrical network stealing user and localization method, comprise the following steps,
Step 1, obtains total voltage and the current value flowing into network load side, obtains each load joint of electrical network outgoing
Voltage and current value at Dian；
Step 2, by comparing current value sum and inflow network load side at all load buses of electrical network outgoing
The size of total current value, tentatively determines whether exception electrical phenomena, if there is exception electrical phenomena, then goes to step 3, as
There is not exception electrical phenomena in fruit, then judge stealing user；
Step 3, obtains topological structure of electric information, builds the loop-impedance matrice of power network topology；
Step 4, according to loop-impedance matrice and the magnitude of voltage of all load buses of power network topology, obtains each branch road
Current calculation value；
Step 5, is carried out doing difference by the current measurement value of each branch road in power network topology and Current calculation value, obtains electrical network and open up
The current error of each branch road in flutterring；
Current measurement value is the current value at each load bus of electrical network outgoing；
Step 6, calculates the current error of each branch road in power network topology and the ratio of Current calculation value, and and predetermined current
Error rate threshold value compares, and finally determines the position of stealing user.
If the current error of branch road is more than predetermined current error rate threshold value with the ratio of Current calculation value, then judge this
Road is fault branch, and this branch road exists stealing user.
If two fault branches exist common load bus, then this common load bus is stealing user.
The monitoring of a kind of electrical network stealing user and the system of localization method, including data server, the total metering device of electric energy
With some load bus electric power meters；Feed out line side at electrical network and the total metering device of electric energy, every at electrical network outgoing are installed
Load bus electric power meter, the total metering device of described electric energy and load bus electric energy metrical dress are installed at one load bus
Put and be all connected with data server；
The total metering device of described electric energy, in order to measure and to send total voltage and the current value of inflow network load side；
Described load bus electric power meter, in order to measure at each load bus of concurrent pushing electric network outgoing
Voltage and current value；
Described data server includes the information about power acquisition module being sequentially connected with, the abnormal preliminary judge module of electricity consumption, electricity
Net topology data obtaining module, branch current computing module, branch current error calculating module and stealing user determine module；
Information about power acquisition module, in order to obtain the total voltage and current value flowing into network load side, obtains electrical network and feeds out
Voltage and current value at each load bus of line；
The abnormal preliminary judge module of electricity consumption, in order to by comparing current value sum at all load buses of electrical network outgoing
With the size of the total current value flowing into network load side, tentatively determine whether exception electrical phenomena；
Power network topology data obtaining module, in order to when there is exception electrical phenomena, obtains topological structure of electric information, structure
Build the loop-impedance matrice of power network topology；
Branch current computing module, in order to the loop-impedance matrice according to power network topology and the voltage of all load buses
Value, obtains the Current calculation value of each branch road；
Branch current error calculating module, in order to by the current measurement value of each branch road in power network topology and Current calculation value
Carry out doing difference, obtain the current error of each branch road in power network topology；
Stealing user determines module, the ratio of current error and Current calculation value in order to calculate each branch road in power network topology
Value, and compare with predetermined current error rate threshold value, finally determine the position of stealing user.
Described stealing user determines that module includes,
Branch current error rate computing module, in order to calculate current error and the galvanometer of each branch road in power network topology
The ratio of calculation value, obtains the current error ratio of each branch road；
Fault branch determines module, in order to the current error ratio of each branch road to be carried out with predetermined current error rate threshold value
Relatively, if the latter is less than the former, then judging to exist in respective branch stealing user, respective branch is defined as fault branch.
Described stealing user determines that module also includes stealing user's locating module, in order to exist common when two fault branches
Load bus, determines that this common load bus is stealing user.
The beneficial effect that the present invention is reached: the present invention is by comparing current value at all load buses of electrical network outgoing
Sum and the size of the total current value flowing into network load side, tentatively determine whether exception electrical phenomena, further according to each
The current error ratio on road compares with predetermined current error rate threshold value, finally determines the position of stealing user, it is not necessary to
Substantial amounts of hardware and software puts into, it is simple to computer realizes.
Accompanying drawing explanation
Fig. 1 is the flow chart of the inventive method.
Fig. 2 is the electric power networks schematic diagram being provided with intelligent electric meter.
Fig. 3 is the block diagram of data server in the present invention.
Fig. 4 is to be the topological structure schematic diagram of actual power network.
Detailed description of the invention
The invention will be further described below in conjunction with the accompanying drawings.Following example are only used for clearly illustrating the present invention
Technical scheme, and can not limit the scope of the invention with this.
As it is shown in figure 1, the monitoring of a kind of electrical network stealing user and localization method, comprise the following steps:
Step 1, obtains total voltage and the current value flowing into network load side, obtains each load joint of electrical network outgoing
Voltage and current value at Dian.
Step 2, by comparing current value sum and inflow network load side at all load buses of electrical network outgoing
The size of total current value, tentatively determines whether exception electrical phenomena, if there is exception electrical phenomena, then goes to step 3, as
There is not exception electrical phenomena in fruit, then judge stealing user.
Step 3, obtains topological structure of electric information, builds the loop-impedance matrice of power network topology.
Step 4, according to loop-impedance matrice and the magnitude of voltage of all load buses of power network topology, obtains each branch road
Current calculation value.
Step 5, is carried out doing difference by the current measurement value of each branch road in power network topology and Current calculation value, obtains electrical network and open up
The current error of each branch road in flutterring；Current measurement value is the current value c at each load bus of electrical network outgoing.
Step 6, calculates the current error of each branch road in power network topology and the ratio of Current calculation value, and and predetermined current
Error rate threshold value compares, and finally determines the position of stealing user.
If the current error of branch road is more than predetermined current error rate threshold value with the ratio of Current calculation value, then judge this
Road is fault branch, and this branch road exists stealing user.If there is common load bus, then this common load in two fault branches
Node is stealing user.
The monitoring of a kind of electrical network stealing user and the system of localization method, including data server, the total metering device of electric energy
With some load bus electric power meters.The total metering device of electric energy and load bus electric power meter are all and data server
Connect.
As in figure 2 it is shown, feed out line side at electrical network to install the total metering device of electric energy (using total ammeter here), in order to measure also
Send total voltage and the current value flowing into network load side；Load bus is installed at each load bus of electrical network outgoing
Electric power meter (uses load ammeter) here, in order to measure the electricity at each load bus of concurrent pushing electric network outgoing
Pressure and current value.
As it is shown on figure 3, data server includes that the information about power acquisition module being sequentially connected with, abnormal electricity consumption tentatively judge mould
Block, power network topology data obtaining module, branch current computing module, branch current error calculating module and stealing user determine mould
Block.
Information about power acquisition module, in order to obtain the total voltage and current value flowing into network load side, obtains electrical network and feeds out
Voltage and current value at each load bus of line.
The abnormal preliminary judge module of electricity consumption, in order to by comparing current value sum at all load buses of electrical network outgoing
With the size of the total current value flowing into network load side, tentatively determine whether exception electrical phenomena.
Power network topology data obtaining module, in order to when there is exception electrical phenomena, obtains topological structure of electric information, structure
Build the loop-impedance matrice of power network topology.
Owing in electrical network, electric power meets numerous, in order to conveniently manage and be accurately positioned stealing user, can be to electrical network
In each user be numbered, owing to the corresponding relation between incidence matrix and power grid user node is fairly simple, so
Incidence matrix is utilized to represent power grid user.
The topological structure of electric figure corresponding with Fig. 2 as shown in Figure 4, uses a point to carry out generation in the drawings due to load impedance
Table, just constitutes a loop, it is possible to utilize circuit matrix accurate between the most all of load impedance and electric energy supply centre
Corresponding relation between each load bus and the loop at its place is really described.
This circuit matrix is the one of topological matrix, has m load (i.e. m loop) and e bar branch road (i.e. e bar limit)
Load branch circuit incidence matrix.Corresponding branch impedance matrix can be propped up with load by the sequencing of each branch impedance all of
The order of each branch impedance in the incidence matrix of road keeps consistent.As can be seen from Figure 4, set up rule according to incidence matrix, formed such as
Under the relevant incidence matrix A of topological structure of electric,
Element in matrix, is 1 or-1 when joining with frontier juncture in corresponding summit, is 0 when not associating.
Convenient in order to calculate and analyze, according to the linear correlation character of matrix, the matrix that can be simplified, i.e. phase
The circuit matrix answered is Ba,
Circuit matrix BaA following relation is had with incidence matrix A:
Ba=(A-1)T
Owing to power consumer is the most, in order to simplify calculating further, load branch circuit incidence matrix is without load
The row in the loop of impedance scratches formed circuit matrix.
Limit e in Fig. 41～e4The most corresponding branch road z1～z4, it is possible to obtain following corresponding loop-impedance matrice: (this
In represent with Z)
According to the numbering of load, obtain following corresponding loop-impedance matrice:
In formula,For the value of calculation of load point electric current,For measuring the exact value of point voltage.
Branch current computing module, in order to the loop-impedance matrice according to power network topology and the voltage of all load buses
Value, obtains the Current calculation value of each branch road.
Branch current error calculating module, in order to by the current measurement value of each branch road in power network topology and Current calculation value
Carry out doing difference, obtain the current error of each branch road in power network topology.
Stealing user determines module, the ratio of current error and Current calculation value in order to calculate each branch road in power network topology
Value, and compare with predetermined current error rate threshold value, finally determine the position of stealing user.
Stealing user determines that module includes,
Branch current error rate computing module, in order to calculate current error and the galvanometer of each branch road in power network topology
The ratio of calculation value, obtains the current error ratio of each branch road；
Fault branch determines module, in order to the current error ratio of each branch road to be carried out with predetermined current error rate threshold value
Relatively, if the latter is less than the former, then judging to exist in respective branch stealing user, respective branch is defined as fault branch.
Stealing user's locating module, in order to there is common load bus when two fault branches, determines that this common load saves
Point is stealing user.
The present invention is by comparing current value sum and inflow network load side at all load buses of electrical network outgoing
The size of total current value, tentatively determines whether exception electrical phenomena, further according to each branch road current error ratio with preset
Current error proportion threshold value compares, and finally determines the position of stealing user；The present invention need not in existing network simultaneously
Increase special device, it is only necessary to electric power meter is installed and detects respectively and flow into total information about power of network load side and every
Information about power at one load bus, and input data server, in data server, algorithm is simple, it is simple to computer is real
Existing.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For Yuan, on the premise of without departing from the technology of the present invention principle, it is also possible to make some improvement and deformation, these improve and deformation
Also should be regarded as protection scope of the present invention.
Claims (6)
1. the monitoring of an electrical network stealing user and localization method, it is characterised in that: comprise the following steps,
Step 1, obtains total voltage and the current value flowing into network load side, obtains at each load bus of electrical network outgoing
Voltage and current value；
Step 2, by comparing current value sum and the total electricity flowing into network load side at all load buses of electrical network outgoing
The size of flow valuve, tentatively determines whether exception electrical phenomena, if there is exception electrical phenomena, then goes to step 3, if do not had
Occur exception electrical phenomena, then judge stealing user；
Step 3, obtains topological structure of electric information, builds the loop-impedance matrice of power network topology；
Step 4, according to loop-impedance matrice and the magnitude of voltage of all load buses of power network topology, obtains the electric current of each branch road
Value of calculation；
Step 5, is carried out doing difference by the current measurement value of each branch road in power network topology and Current calculation value, obtains in power network topology
The current error of each branch road；
Current measurement value is the current value at each load bus of electrical network outgoing；
Step 6, calculates the ratio of the current error of each branch road and Current calculation value in power network topology, and with predetermined current error
Proportion threshold value compares, and finally determines the position of stealing user.
The monitoring of a kind of electrical network stealing user the most according to claim 1 and localization method, it is characterised in that: if branch road
Current error is more than predetermined current error rate threshold value with the ratio of Current calculation value, then judge that this branch road, should as fault branch
Stealing user is there is on branch road.
The monitoring of a kind of electrical network stealing user the most according to claim 2 and localization method, it is characterised in that: if two events
There is common load bus in barrier branch road, then this common load bus is stealing user.
4. monitoring based on a kind of electrical network stealing user described in claim 1 and the system of localization method, it is characterised in that: bag
Include data server, the total metering device of electric energy and some load bus electric power meters；Feed out line side at electrical network and electric energy is installed
Total metering device, installs load bus electric power meter at each load bus of electrical network outgoing, and described electric energy is total
Metering device and load bus electric power meter are all connected with data server；
The total metering device of described electric energy, in order to measure and to send total voltage and the current value of inflow network load side；
Described load bus electric power meter, in order to measure the voltage at each load bus of concurrent pushing electric network outgoing
And current value；
Described data server includes that the information about power acquisition module being sequentially connected with, the abnormal preliminary judge module of electricity consumption, electrical network are opened up
Flutter data obtaining module, branch current computing module, branch current error calculating module and stealing user and determine module；
Information about power acquisition module, in order to obtain the total voltage and current value flowing into network load side, obtains electrical network outgoing
Voltage and current value at each load bus；
The abnormal preliminary judge module of electricity consumption, in order to by comparing current value sum and stream at all load buses of electrical network outgoing
Enter the size of the total current value of network load side, tentatively determine whether exception electrical phenomena；
Power network topology data obtaining module, in order to when there is exception electrical phenomena, obtains topological structure of electric information, builds electricity
The loop-impedance matrice of net topology；
Branch current computing module, in order to the loop-impedance matrice according to power network topology and the magnitude of voltage of all load buses,
Current calculation value to each branch road；
Branch current error calculating module, in order to be carried out with Current calculation value by the current measurement value of each branch road in power network topology
Do difference, obtain the current error of each branch road in power network topology；
Stealing user determines module, in order to calculate the current error of each branch road and the ratio of Current calculation value in power network topology,
And compare with predetermined current error rate threshold value, finally determine the position of stealing user.
5. monitoring based on a kind of electrical network stealing user described in claim 4 and the system of localization method, it is characterised in that: institute
State stealing user and determine that module includes,
Branch current error rate computing module, in order to calculate the current error of each branch road and Current calculation value in power network topology
Ratio, obtain the current error ratio of each branch road；
Fault branch determines module, in order to the current error ratio of each branch road to be compared with predetermined current error rate threshold value
Relatively, if the latter is less than the former, then judging to exist in respective branch stealing user, respective branch is defined as fault branch.
6. monitoring based on a kind of electrical network stealing user described in claim 5 and the system of localization method, it is characterised in that: institute
State stealing user and determine that module also includes stealing user's locating module, in order to there is common load bus when two fault branches,
Determine that this common load bus is stealing user.
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