CN110488129A - A kind of the platform differentiation branch recognition methods and system of combined voltage current detecting - Google Patents
A kind of the platform differentiation branch recognition methods and system of combined voltage current detecting Download PDFInfo
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- CN110488129A CN110488129A CN201910893631.3A CN201910893631A CN110488129A CN 110488129 A CN110488129 A CN 110488129A CN 201910893631 A CN201910893631 A CN 201910893631A CN 110488129 A CN110488129 A CN 110488129A
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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Abstract
The present invention relates to electric system detection technique fields, the platform of specially a kind of combined voltage current detecting distinguishes branch recognition methods and system, this method includes that disturbance load step, Disturbance Detection step and topological structure calculate step, specifically include: central node controls intended branch node and sends current perturbation signal at the voltage zero-cross moment, and the current perturbation signal is the low frequency sinusoidal current perturbation signal of 1-100kHz；Branch node detects current perturbation signal in zero-acrross ing moment, and sends testing result to central node；Central node calculates the topological structure to scaffold tower area according to testing result.A kind of platform of combined voltage current detecting provided by the invention distinguishes branch recognition methods and system, will not impact to grid equipment, can stablize, accurately and rapidly realize that platform distinguishes the identification of branch.
Description
Technical field
The present invention relates to electric system detection technique field, the platform of specially a kind of combined voltage current detecting is distinguished branch and is known
Other method and system.
Background technique
Electric energy occupies always very important status in energy pattern, and the intelligentize and informatization of network system for
The effective use of the effect and electric energy that further play electric energy is most important.However during its intelligentize and informatization
There are many urgent problems to be solved, and wherein the topological structure of power grid (especially low-voltage platform area) is always to perplex its fast development
Problem.Low-voltage platform area user is efficient and convenient for electricity consumption, and cabling is quite random, and there is no walked according to the regulation of relevant departments
Line, or even also for some users there are two not service wires in area on the same stage, this all causes the practical electricity consumption of user and branch's summary table
Data there are biggish discrepancy.Secondly as the presence that various unrest are taken, disorderly connect, also gives power equipment maintaining people to a certain extent
The personal safety of member brings great security risk.Therefore, it in order to which power consumption management department realizes consumption reduction detraction, needs to platform area
Entire topological structure have one it is accurate dynamic understand, to realize that platform area refines accuracy integrated management.
Accurately to describe the topological structure of a low-voltage platform area, the first first step it is required to determine that some system node
Whether some Target Station area, if so, being which phase belonged to.Secondly, in all nodes that some Target Station area has been determined and
After corresponding phase electricity, need to further determine that the topological relation between all system nodes.Traditional linear-elsatic buckling system, platform area
System is all made of the mode of power line carrier two-way communication, its advantage is that can be directly using existing network without being
Upgrading on system, it is simple to operate.At the same time with bring fatal weakness, firstly, power communication system is sufficiently complex,
The noise and line impedance of different periods system are all different, irregular for the decaying of carrier signal, therefore can not be steady
Fixed progress is transmitted at a distance.Secondly because power line carrier communication mostly uses greatly high-frequency carrier signal, distribution transformer can be passed through
Device is coupled to high-pressure side, then is transferred to adjacent distribution transforming by high-voltage line, thus platform area transformer be total to high pressure, altogether, cable duct altogether
Adjacent more distribution transformings platform area identification there are accuracy problems.Another scheme is by the way of specific big pulse current
Platform area linear-elsatic buckling is carried out, certainly, the program no longer there are problems that getting lines crossed, and can improve the identification of platform area to a certain extent
Accuracy problem.But maximum shortcoming is that long-term high current in short-term may damage equipment and system,
In the burden and cost for virtually increasing system, lose more than gain instead.In view of this, how to take into account the stabilization of system equipment
Property and the accuracy of platform area linear-elsatic buckling are a problems.
Summary of the invention
The invention is intended to provide a kind of platform of combined voltage current detecting to distinguish branch recognition methods and a kind of combined voltage electricity
The platform of stream detection distinguishes branch identifying system, can stablize, accurately and rapidly realize that platform distinguishes the identification of branch.
In order to solve the above-mentioned technical problem, the application provides the following technical solutions:
A kind of platform differentiation branch recognition methods of combined voltage current detecting, comprising: disturbance load step, central node control
Intended branch node the voltage zero-cross moment send current perturbation signal, the current perturbation signal be 1-100kHz low frequency just
String current perturbation signal；Disturbance Detection step, branch node detects current perturbation signal in zero-acrross ing moment, and sends out to central node
Send testing result；Topological structure calculates step, and central node calculates the topological structure to scaffold tower area according to testing result.
In technical solution of the present invention, the heavy current pulse signal of script is replaced to carry out platform with low frequency sinusoidal current perturbation signal
Area's linear-elsatic buckling can impact to avoid to grid equipment；Ensure the stability of equipment work.Current perturbation signal frequency mistake
Height can cause intercoupling between low-voltage platform area, and in high-pressure side coupling effect can occur for too low frequency, all can be certain
The accuracy of recognition result is reduced in degree；The high-frequency signal of megahertz rank be easy to by actual electric network load circuit etc.
The influence for imitating capacitor, so that actual conditions largely deviate expection；The application comes using the frequency of 1-100kHz
Current perturbation signal is done, the sine wave wavelength of the current perturbation signal of 1-100kHz is 3-300km, foot in the theoretical length of vacuum
To cover the low-voltage platform area of nearly all scale, influence of noise can be both reduced, guarantees signal transmission quality, and may insure to disturb
Streaming current signal effectively covers entire platform area, guarantees the accuracy of detection.
Further, the disturbance load step includes:
S100: it is current goal branch node that central node, which chooses a node in intended branch node,；
S200: central node notifies current goal branch node to send current perturbation signal；
S300: after current goal branch node receives the communication information, voltage zero-cross moment within a preset time interval
Send current perturbation signal；
Disturbance Detection step includes:
S400: all branch nodes carry out current perturbation signal detection at the voltage zero-cross moment, and are detecting disturbance electricity
When flowing signal, testing result is sent to central node；
S500: if after central node receives the testing result of corresponding current goal branch node, other is chosen and is failed to give notice
The branch node crossed is current goal branch node, and repeats S200 to S500 until receiving all intended branch sections
The corresponding testing result of point.
There is central node to come the transmission that each intended branch node of active control carries out current perturbation signal one by one, Ke Yiyou
Sequence is efficiently completed the detection of branch node.
Further, the current perturbation signal is the low frequency sinusoidal current perturbation signal of 10kHz.
The sine wave wavelength X of 10kHz is 30km in the theoretical length of vacuum, it is sufficient to cover entire low-voltage platform area.
Further, in the S400, branch node sends testing result to central node by power line carrier communication.
Power line carrier communication is the communication technology highly developed at present, carries out branch by power line carrier communication
Data transmission between node and central node, it is simple and convenient.
Further, it in S500, if central node does not receive the testing result of corresponding current goal branch node, keeps
Current goal branch node, and repeat S200 to S500 until receive corresponding current branch node testing result or
After reaching maximum reattempt times, choosing the branch node that other were failed to give notice is current goal branch node, and is repeated
S200 to S500 is until receive all corresponding testing results of intended branch node.
It avoids causing information to send failure because of the unstable of communication, by retrying, the branch for feeding back no success is saved
Point, central node can carry out multiple message transmission, it is ensured that collect corresponding testing result.
Further, before S100 further include:
S10: central node carries out the identification of platform area and phase line, screens the branch node in Target Station area as intended branch
Node.
By the identification of platform area and phase line, corresponding intended branch node can be filtered out, only for scaffold tower area into
Row detection.
Further, topological structure calculate step in, central node judge the topological structure of branch node the following steps are included:
The testing result that central node is sent according to branch node, the current perturbation signal for judging that branch node detects are
It is no with the same phase of current goal branch node, if so, determining branch node for the father node of current goal branch node.
According to the phase of low-frequency current current perturbation signal, the judgement of loop relationship between branch node is realized, by each
Relationship between a node calculates the topological structure relationship entirely to scaffold tower area.
Further, the invention also discloses a kind of platforms of combined voltage current detecting to distinguish branch identifying system, the system packet
It includes:
Central node and branch node are equipped with current perturbation signal on the branch node and occur and detection mould group, institute
State current perturbation signal occur and detection mould group include current perturbation signal transmitter unit, voltage zero-cross moment monitoring unit and
Current perturbation detection unit；
The central node is for notifying intended branch node successively to send current perturbation signal；The current perturbation signal
For the low frequency sinusoidal current perturbation signal of 1-100kHz；
The voltage zero-cross moment monitoring unit is used for monitoring voltage zero-acrross ing moment；
The current perturbation signal transmitter unit is used for after receiving the notification information of central node, between preset time
Current perturbation signal is sent every the interior voltage zero-cross moment；
The current perturbation detection unit is used to detect current perturbation signal at the voltage zero-cross moment and send out to central node
Send testing result；
The central node be also used to receive the testing result that each branch node is sent and calculate according to testing result to
The topological structure in scaffold tower area.
Occur and detect mould group by current perturbation signal, the high current of script is replaced with low frequency sinusoidal current perturbation signal
Pulse signal carries out platform area linear-elsatic buckling, can impact to avoid to grid equipment；Ensure the stability of equipment work.Disturbance
Current signal frequency is excessively high to cause intercoupling between low-voltage platform area, and in high-pressure side coupling effect can occur for too low frequency
It answers, can all reduce the accuracy of recognition result to a certain extent；The high-frequency signal of megahertz rank is easy to by actual electric network
The influence of equivalent capacity in load circuit, so that actual conditions largely deviate expection；The application is using 1-
The frequency of 100kHz does current perturbation signal, and the sine wave wavelength of the current perturbation signal of 1-100kHz is long in the theory of vacuum
Degree is 3-300km, it is sufficient to cover the low-voltage platform area of nearly all scale, can both reduce influence of noise, guarantee that signal transmits matter
Amount, and may insure that current perturbation signal effectively covers entire platform area, guarantee the accuracy of detection.
Further, the current perturbation signal occurs and detection mould group further includes platform area feedback unit and phase line feedback
Member, the central node include platform area recognition unit and recognition of phase line unit, and platform area feedback unit and phase line feedback unit are used for
The platform area information and phase line information of branch node, described area's recognition unit and recognition of phase line list where sending it to central node
Member is for according to platform area information and phase line information identification platform area and phase line, the central node to be also used to be sieved according to platform area and phase line
The branch node in Target Station area is selected as intended branch node.
By obtaining platform area information and phase line information, central node is facilitated to screen intended branch node.
Further, the current perturbation signal occurs and detection mould group includes carrier communication unit, and the branch node is logical
It crosses carrier communication unit and receives the notification information of central node, to central node sending station area information, phase line information and detection
As a result.
The data between branch node and central node can be carried out with power line carrier communication by carrier communication unit
Transmission, it is simple and convenient.
Detailed description of the invention
Fig. 1 is the logic diagram in a kind of platform differentiation branch recognition methods embodiment of combined voltage current detecting of the present invention.
Specific embodiment
It is further described below by specific embodiment:
Embodiment one
As shown in Figure 1, a kind of platform of combined voltage current detecting of the present embodiment distinguishes branch identifying system, during which includes
Heart node and branch node, are equipped with that current perturbation signal occurs and detection mould group, current perturbation signal occur on branch node
And detection mould group includes carrier communication unit, platform area feedback unit, phase line feedback unit, current perturbation signal transmitter unit, electricity
Press through zero moment monitoring unit and current perturbation detection unit；Current perturbation signal transmitter unit is for receiving centromere
After the notification information of point, the voltage zero-cross moment within a preset time interval sends current perturbation signal；Current perturbation detection is single
Member is for detecting current perturbation signal at the voltage zero-cross moment and sending testing result to central node.Central node is for notifying
Intended branch node successively sends current perturbation signal；The low frequency sinusoidal current perturbation that current perturbation signal is 1-100kHz is believed
Number；Central node is also used to receive the testing result that each branch node is sent and calculates opening up to scaffold tower area according to testing result
Flutter structure.Communication between branch node and central node, including receiving the notification information of central node, being sent to central node
Platform area information, phase line information and testing result, are realized by carrier communication unit.
Central node includes platform area recognition unit and recognition of phase line unit, and platform area feedback unit and phase line feedback unit are used for
The platform area information and phase line information of branch node, described area's recognition unit and recognition of phase line list where sending it to central node
Member is for according to platform area information and phase line information identification platform area and phase line, the central node to be also used to be sieved according to platform area and phase line
The branch node in Target Station area is selected as intended branch node.
In the present embodiment, current perturbation signal occurs and detection mould group uses the special chip mould group for supporting carrier communication,
Specially WQ3011 power line carrier communication chip, chip module support table area identification, recognition of phase line function, is used for center
Node sending station area's information and phase line information facilitate central node that can quickly determine all branches section of some low-voltage platform area
Point, and the low frequency sinusoidal current disturbing current signal of 1-100kHz can be generated under the control of the signal of central node；The chip
It include voltage zero-cross moment observation circuit and current perturbation detection circuit in mould group, voltage zero-cross moment observation circuit can be accurate
The mistake zero position of positioning voltage, error microsecond the order of magnitude, current perturbation detection circuit come detect low-frequency current disturbance electricity
Flow signal.
Specifically, current perturbation signal is set as the low frequency sinusoidal current perturbation signal of 10kHz in the present embodiment.10kHz
Sine wave wavelength X in the theoretical length of vacuum be 30km, it is contemplated that complex passages of actual power line and round-trip, it is equivalent
Wavelength is about 10km, even the wavelength of a quarter, i.e. 2.5km are also enough to cover entire low-voltage platform area.
A kind of platform of combined voltage current detecting of the present embodiment distinguishes branch recognition methods and is based on system above, this method packet
It includes:
Load step is disturbed, central node controls intended branch node and sends current perturbation signal at the voltage zero-cross moment,
Current perturbation signal is the low frequency sinusoidal current perturbation signal of 1-100kHz；It is disturbed in the present embodiment for the low frequency sinusoidal of 10kHz
Current signal.
Disturbance Detection step, branch node detects current perturbation signal in zero-acrross ing moment, and sends and detect to central node
As a result；
Topological structure calculates step, and central node calculates the topological structure to scaffold tower area according to testing result.
Specifically, disturbance load step includes:
S10: central node carries out the identification of platform area and phase line, screens the branch node in Target Station area as intended branch
Node.
S100: it is current goal branch node that central node, which chooses a node in intended branch node,；
S200: central node notifies current goal branch node to send current perturbation signal by power line carrier communication；
In the present embodiment, central node notifies branch node by way of broadcast, and each branch node has a node number,
Central node broadcasts the node number of current goal branch node every time, branch node judged by node number oneself whether when
Front nodal point.
S300: after current goal branch node receives the communication information, voltage zero-cross moment within a preset time interval
Send current perturbation signal；
Disturbance Detection step includes:
S400: all branch nodes carry out current perturbation signal detection at the voltage zero-cross moment, and are detecting disturbance electricity
When flowing signal, testing result is sent to central node by power line carrier communication；It include phase information in testing result.
S500: if after central node receives the testing result of corresponding current goal branch node, other is chosen and is failed to give notice
The branch node crossed is current goal branch node, and repeats S200 to S500 until receiving all intended branch sections
The corresponding testing result of point.If central node does not receive the testing result of corresponding current goal branch node, keep current
Intended branch node, and S200 to S500 is repeated until receiving the testing result of corresponding current branch node or reaching
After maximum reattempt times, choosing the branch node that other were failed to give notice is current goal branch node, and repeats S200 and arrive
S500 is until receive all corresponding testing results of intended branch node.
Topological structure calculates in step, and central node judges to be sentenced when the topological structure of branch node according to following principle
It is disconnected:
If branch node is the father node of current goal branch node, it detects that current perturbation signal with
The same phase of current goal branch node, if a branch node is the child node or the brotgher of node of current goal branch node,
It detects that current perturbation signal and current goal branch node reverse phase.
It is corresponding, central node judge the topological structure of branch node specifically includes the following steps:
The testing result that central node is sent according to branch node, the current perturbation signal for judging that branch node detects are
It is no with the same phase of current goal branch node, if so, determining branch node for the father node of current goal branch node；
Central node according to testing result, carries out the topological structure calculated before perfect.
According to the phase of low-frequency current current perturbation signal, the judgement of loop relationship between branch node is realized, by each
Relationship between a node calculates the topological structure relationship entirely to scaffold tower area.
Embodiment two
The difference between this embodiment and the first embodiment lies in low-frequency current current perturbation signal is using 9kHz's in the present embodiment
Sinusoidal current signal.
Embodiment three
The difference between this embodiment and the first embodiment lies in low-frequency current current perturbation signal uses 11kHz in the present embodiment
Sinusoidal current signal.
Example IV
The difference between this embodiment and the first embodiment lies in low-frequency excitation current signal uses the sine of 1kHz in the present embodiment
Current signal.
Embodiment five
The difference between this embodiment and the first embodiment lies in low-frequency excitation current signal is using 100kHz just in the present embodiment
String current signal.
The above are merely the embodiment of the present invention, the field that invention case study on implementation without being limited thereto is related to is known in scheme
Specific structure and the common sense such as characteristic do not describe excessively herein, one skilled in the art know the applying date or preferential
All ordinary technical knowledges of technical field that the present invention belongs to before Quan can know the prior art all in the field, and
And there is the ability for applying routine experiment means before the date, what one skilled in the art can provide in the application
Under enlightenment, this programme is improved and implemented in conjunction with self-ability, and some typical known features or known method should not become
One skilled in the art implement the obstacle of the application.It should be pointed out that for those skilled in the art, not taking off
Under the premise of from structure of the invention, several modifications and improvements can also be made, these also should be considered as protection scope of the present invention,
These all will not influence the effect and patent practicability that the present invention is implemented.This application claims protection scope should be with its right
It is required that content subject to, the records such as specific embodiment in specification can be used for explaining the content of claim.
Claims (10)
1. a kind of platform of combined voltage current detecting distinguishes branch recognition methods, it is characterised in that: include:
Load step is disturbed, central node controls intended branch node and sends current perturbation signal at the voltage zero-cross moment, described
Current perturbation signal is the low frequency sinusoidal current perturbation signal of 1-100kHz；
Disturbance Detection step, branch node detects current perturbation signal in zero-acrross ing moment, and sends testing result to central node；
Topological structure calculates step, and central node calculates the topological structure to scaffold tower area according to testing result.
2. a kind of platform of combined voltage current detecting according to claim 1 distinguishes branch recognition methods, it is characterised in that: institute
Stating disturbance load step includes:
S100: it is current goal branch node that central node, which chooses a node in intended branch node,；
S200: central node notifies current goal branch node to send current perturbation signal；
S300: after current goal branch node receives the communication information, the voltage zero-cross moment within a preset time interval is sent
Current perturbation signal；
Disturbance Detection step includes:
S400: all branch nodes carry out current perturbation signal detection at the voltage zero-cross moment, and are detecting current perturbation letter
Number when, to central node send testing result；
S500: if after central node receives the testing result of corresponding current goal branch node, choose what other were failed to give notice
Branch node is current goal branch node, and repeats S200 to S500 until receiving all intended branch nodes pair
The testing result answered.
3. a kind of platform of combined voltage current detecting according to claim 1 distinguishes branch recognition methods, it is characterised in that: institute
State the low frequency sinusoidal current perturbation signal that current perturbation signal is 10kHz.
4. a kind of platform of combined voltage current detecting according to claim 2 distinguishes branch recognition methods, it is characterised in that: institute
It states in S400, branch node sends testing result to central node by power line carrier communication.
5. a kind of platform of combined voltage current detecting according to claim 2 distinguishes branch recognition methods, it is characterised in that:
In S500, if central node does not receive the testing result of corresponding current goal branch node, current goal branch is kept to save
Point, and S200 to S500 is repeated until receiving the testing result of corresponding current branch node or reaching maximum and retry time
After number, choosing the branch node that other were failed to give notice is current goal branch node, and repeats S200 to S500 until connecing
Receive all corresponding testing results of intended branch node.
6. a kind of platform of combined voltage current detecting according to claim 2 distinguishes branch recognition methods, it is characterised in that:
Before S100 further include:
S10: central node carries out the identification of platform area and phase line, screens the branch node in Target Station area as intended branch section
Point.
7. a kind of platform of combined voltage current detecting according to claim 1 distinguishes branch recognition methods, it is characterised in that: open up
Flutter in Structure Calculation step, central node judge the topological structure of branch node the following steps are included:
The testing result that central node is sent according to branch node, judge current perturbation signal that branch node detects whether with
The same phase of current goal branch node, if so, determining branch node for the father node of current goal branch node.
8. the platform of combined voltage current detecting a kind of distinguishes branch identifying system, it is characterised in that: the system includes:
Central node and branch node are equipped with current perturbation signal on the branch node and occur and detection mould group, described to disturb
Streaming current signal occurs and detection mould group includes current perturbation signal transmitter unit, voltage zero-cross moment monitoring unit and disturbance
Current detecting unit；
The central node is for notifying intended branch node successively to send current perturbation signal；The current perturbation signal is 1-
The low frequency sinusoidal current perturbation signal of 100kHz；
The voltage zero-cross moment monitoring unit is used for monitoring voltage zero-acrross ing moment；
The current perturbation signal transmitter unit is used for after receiving the notification information of central node, within a preset time interval
The voltage zero-cross moment send current perturbation signal；
The current perturbation detection unit is used to detect current perturbation signal at the voltage zero-cross moment and send to central node and examine
Survey result；
The central node is also used to receive the testing result that each branch node is sent and is calculated according to testing result to scaffold tower
The topological structure in area.
9. a kind of platform of combined voltage current detecting according to claim 8 distinguishes branch identifying system, it is characterised in that: institute
Stating current perturbation signal to occur and detect mould group further includes platform area feedback unit and phase line feedback unit, and the central node includes
Where platform area recognition unit and recognition of phase line unit, platform area feedback unit and phase line feedback unit are used to send it to central node
The platform area information and phase line information of branch node, described area's recognition unit and recognition of phase line unit be used for according to platform area information and
Phase line information identifies platform area and phase line, and the central node is also used to filter out branch's section in Target Station area according to platform area and phase line
Point is used as intended branch node.
10. a kind of platform of combined voltage current detecting according to claim 9 distinguishes branch identifying system, it is characterised in that:
The current perturbation signal occurs and detection mould group includes carrier communication unit, and the branch node is connect by carrier communication unit
Receive the notification information of central node, to central node sending station area information, phase line information and testing result.
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| CN111030303A (en) * | 2019-12-27 | 2020-04-17 | 无锡圣普电力科技有限公司 | Low-voltage transformer area topology identification system based on characteristic current |
| CN111245095A (en) * | 2020-01-16 | 2020-06-05 | 遵义贵华能源科技有限公司 | Topology identification method of low-voltage distribution network topology identification system |
| CN111682641A (en) * | 2020-06-02 | 2020-09-18 | 航天中电科技（北京）有限公司 | Charge control intelligent switch, charge control method and distribution room topology identification method |
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