CN111142047B - Automatic studying and judging method based on power distribution internet of things power failure - Google Patents
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Abstract
The invention discloses a method for automatically studying and judging power failure based on power distribution internet of things, and relates to the technical field of power communication; the method is based on power failure event reporting of the distribution transformer, running state calling of the distribution transformer and correlation of topological relation of lines, and comprises the steps of S1 line model establishment, S2 judgment logic setting, S3 data information source and S4 generation automatic power failure research and judgment method, wherein the step of S1 line model establishment comprises the steps of S101 line model establishment, S102 branch line combination model establishment and S103 branch line model establishment; the steps of establishing a line model through S1, setting a judgment logic through S2, generating an automatic power failure research and judgment method through an S3 data information source and an S4 are adopted, and the line power failure information is obtained in time.
Description
Technical Field
The invention relates to the technical field of power communication, in particular to a method for automatically studying and judging power failure based on power distribution internet of things.
Background
The current power failure monitoring means of the distribution line mainly comprises a power failure alarm signal sent by a line fault indicator, a distribution switch monitoring terminal (FTU for short) and a relay protection device. However, in some areas in China, the coverage rate of the line power failure monitoring equipment is not high, and the line power failure monitoring equipment is particularly prominent in the aspects of 10 kilovolt sectional lines and branch lines, so that after the sectional lines and the branch lines are powered off, emergency repair personnel can only judge the power failure range by on-site confirmation through customer repair reporting and contact with each stationer electrician, and the power transmission recovery time of the equipment is necessarily prolonged under the condition, and meanwhile, the passive emergency repair service causes the high-quality service work of a power supply company to encounter a bottleneck.
Problems with the prior art and considerations:
how to solve the technical problem of timely acquiring the power failure information of the line.
Disclosure of Invention
The invention aims to solve the technical problem of providing a power distribution Internet of things-based power failure automatic studying and judging method, which realizes timely acquisition of power failure information of a line through steps of establishing a line model through S1, setting judgment logic through S2, setting a data information source through S3, generating an automatic power failure studying and judging method through S4 and the like.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a method for automatically studying and judging power failure based on power distribution internet of things is characterized in that a topological relation of a line is correlated based on reporting of a power failure event of a power distribution transformer and recalling and testing of an operation state of the power distribution transformer, and comprises the steps of S1 line model establishment, S2 set judgment logic, S3 data information source and S4 generation automatic power failure studying and judging method, wherein the step of S1 line model establishment comprises the steps of S101 general basic line model establishment, S102 branch line combination model establishment and S103 branch line model establishment.
The further technical scheme is as follows: the step of establishing a general basic line model in S101 includes that the basic line model includes a trunk line and a branch line, the trunk line is a line directly connected to a power supply point, i.e., a substation, and is divided into sections by a section switch, and each section on the trunk line is a trunk section; the branch line is a line connected to the trunk line through a branch switch.
The further technical scheme is as follows: the step of S102 establishing the branch line combination model includes that one branch line having one or two distribution transformers is a small branch line, and more than two small branch lines each directly connected to the trunk section are combined to form the branch line combination model on one trunk section.
The further technical scheme is as follows: the step S103 of building a branch line model includes that a line segmented by a line switch on the branch line is called a branch line, and the branch line is defined as a branch line on the trunk line.
The further technical scheme is as follows: the step of setting the decision logic at S2 includes that the trunk section is a trunk segment line, the branch line, and the distribution transformer are used as calculation units of a mathematical summation formula, and the power failure of the transformer, the branch line, the segment line, or the whole line is decided through a digital summation mode.
The further technical scheme is as follows: the step of setting the decision logic in S2 further includes setting the distribution transformer as a calculation unit, and assigning a value of 0 when the distribution transformer is dead; when the distribution transformer is electrified, the value is 1; the single quantity is calculated to be 0 or 1, and the calculation result of the mathematical summation is 0 or not 0;
when all the calculated single quantities on the branch line are 0, judging that the branch line is in a non-electricity state;
taking a branch line on the trunk subsection line as a calculation single quantity, and judging whether the trunk subsection line has electricity or not by judging whether the branch line has electricity or not, namely judging whether the trunk subsection line has electricity or not according to the relation of 0 or 1;
and taking the segmented line of the whole line as a calculation unit, and judging whether the whole line is electrified or not according to whether the segmented line is electrified or not.
The further technical scheme is as follows: the step of S3 data information source comprises judging the operation state of the distribution transformer through the concentrator, the remote terminal of the distribution transformer or the power failure alarm signal of the intelligent electric meter under the same distribution transformer.
The further technical scheme is as follows: the step of the method for generating the automatic power failure studying and judging by the S4 comprises the step of establishing the hierarchical logic relationship of the whole line, the segmented line, the branch line and the distribution transformer according to the distribution line model rule by using the operation state data of the distribution transformer through the judgment logic so as to form the automatic power failure studying and judging.
The further technical scheme is as follows: the step of generating the automatic power failure studying and judging method of S4 further includes an S401 studying and judging process, when a power failure event of the distribution transformer is reported, a line is studied and judged; when the number of power failures of the distribution transformer on one branch line is found to be three or more at the same time, the power failure of the branch line is directly judged; when the reported number of the power failure events of the distribution transformers does not exceed three, initiating active calling and testing on the rest distribution transformers of the branch line, judging that the branch has power failure when the calling and testing results are all non-power, and judging that the branch line has power if the current distribution transformer has power; and judging the operation state of the trunk subsection line through the operation state of the branch line, and further judging the operation state of the whole line.
The further technical scheme is as follows: the method also comprises a step of S5 studying and judging results and application, and after the judgment process is finished, the system presents the operation condition of the line: the system is characterized in that the system comprises a main line, a branch line and a branch line, wherein the main line is electrified, the main line is unpowered, the branch line is powered off or the branch line is powered off, and related personnel are informed of carrying out emergency repair work in a power-off alarm prompt and active short message pushing mode.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:
a method for automatically studying and judging power failure based on power distribution internet of things is characterized in that a topological relation of a line is correlated based on reporting of a power failure event of a power distribution transformer and recalling and testing of an operation state of the power distribution transformer, and comprises the steps of S1 line model establishment, S2 set judgment logic, S3 data information source and S4 generation automatic power failure studying and judging method, wherein the step of S1 line model establishment comprises the steps of S101 general basic line model establishment, S102 branch line combination model establishment and S103 branch line model establishment. The steps of establishing a line model through S1, setting a judgment logic through S2, generating an automatic power failure research and judgment method through an S3 data information source and an S4 are adopted, and the line power failure information is obtained in time.
See detailed description of the preferred embodiments.
Drawings
FIG. 1 is a flow chart of the present invention;
FIG. 2 is a schematic diagram of a basic wiring model in the present invention;
FIG. 3 is a schematic diagram of a branch line combining model according to the present invention;
FIG. 4 is a schematic diagram of a bifurcated line model of the present invention;
FIG. 5 is a screenshot of a use interface of the present invention.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, but the present application may be practiced in other ways than those described herein, and it will be apparent to those of ordinary skill in the art that the present application is not limited to the specific embodiments disclosed below.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be discussed further in subsequent figures.
In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … … surface," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of protection of the present application is not to be construed as being limited.
As shown in fig. 1 to 4, the present invention discloses a method for automatically studying and judging power failure based on distribution internet of things, which is based on reporting of power failure events of a distribution transformer and recall and test of operation states of the distribution transformer, and associates with topological relations of lines, and comprises the following steps:
s1 establishing line model
S101, establishing a general basic line model
The basic line model includes a trunk line and branch lines, the trunk line is a line directly connected to a power supply point, i.e., a substation, and is divided into sections by a section switch, and each section on the trunk line is a trunk section; the branch line is a line connected to the trunk line through a branch switch.
S102 establishing branch line combination model
One or two branch circuits of the distribution transformer are small branch circuits on one branch circuit, and more than two small branch circuits which are directly connected with the main section are combined on one section of the main section to form a branch circuit combined model.
S103, establishing a branched line model
The line segmented by the line switch on the branch line is called a branch line, and the branch line is defined as a branch line on the trunk line.
S2 setting decision logic
The trunk section is a trunk subsection line, the branch line and the distribution transformer are used as calculation single quantities of a mathematical summation formula, and power failure of the transformer, the branch line, the subsection line or the whole line is judged through a digital summation mode.
Taking the distribution transformer as a calculation unit, and assigning a value of 0 when the distribution transformer is out of power; when the distribution transformer is electrified, the value is 1. The simple quantity is calculated as 0 or 1 and the result of the mathematical sum is 0 or non-0.
When all the calculated single quantities on the branch line are 0, the branch line is determined to be in a non-power state.
The branch line on the trunk segmented line is used as a calculation unit, and whether the trunk segmented line has electricity or not is judged by judging whether the branch line has electricity or not, namely the relation of 0 or 1.
And taking the segmented line of the whole line as a calculation unit, and judging whether the whole line is electrified or not according to whether the segmented line is electrified or not.
S3 data information source
And judging the running state of the distribution transformer through a remote terminal of the concentrator and the distribution transformer or a power failure alarm signal of the intelligent ammeter under the same distribution transformer.
S4 generated automatic power failure research and judgment method
And establishing the hierarchical logic relationship of the whole line, the segmented line, the branch line and the distribution transformer according to the distribution line model rule by using the operation state data of the distribution transformer through the judgment logic to form automatic power failure research and judgment.
S401 studying and judging process
When a power failure event of the distribution transformer is reported, the line is researched and judged. When the number of power failures of the distribution transformer on one branch line is found to be three or more at the same time, the power failure of the branch line is directly judged; when the reported number of the power failure events of the distribution transformers does not exceed three, initiating active calling and testing on the rest distribution transformers of the branch line, judging that the branch has power failure when the calling and testing results are all non-power, and judging that the branch line has power if the current distribution transformer has power; and judging the operation state of the trunk subsection line through the operation state of the branch line, and further judging the operation state of the whole line.
S5 research and judgment result and application
After the judgment flow is finished, the system presents the operation condition of the line: the system is characterized in that the system comprises a main line, a branch line and a branch line, wherein the main line is electrified, the main line is unpowered, the branch line is powered off or the branch line is powered off, and related personnel are informed of carrying out emergency repair work in a power-off alarm prompt and active short message pushing mode.
The application relates to an automatic studying and judging method for power failure of a 10 kV line of a distribution network, in particular to an automatic studying and judging method for power failure of a branch line and a subsection line.
The technical problem that this application will solve:
on the premise of not increasing construction investment and technicians, the method for automatically studying and judging the power failure of the 10 kV line of the related distribution network is provided by utilizing the existing technical conditions. By means of technical means such as power failure alarm and automatic calling and measuring of the distribution transformer, real-time power failure monitoring of the segmented and branched lines is achieved, the fault site investigation time of line management personnel is shortened, the power transmission recovery time is further shortened, the power supply reliability is improved, the situation of passive first-aid repair caused by technical problems at present is changed, and meanwhile, losses of both a client and a state network company are reduced to the maximum extent.
The invention concept of the application is as follows:
the current power failure monitoring means of the distribution line mainly comprises a line fault indicator, a power distribution switch monitoring terminal, FTU for short, and a power failure alarm signal sent by a relay protection device. However, in part of domestic areas at present, the coverage rate of the line power failure monitoring equipment is not high and is particularly prominent in the aspects of 10 kilovolt sectional lines and branch lines, so that after the sectional lines and the branch lines are powered off, emergency repair personnel can only report and contact each stationing electrician to confirm and judge the power failure range on site through clients, the power transmission recovery time of the equipment is prolonged under the condition, and meanwhile, the passive emergency repair service causes the high-quality service work of a power supply company to be in a bottleneck. On the premise of not increasing construction investment and technicians, the invention realizes the real-time monitoring of the power failure of the segmented and branched lines by the technical means of power failure alarm, automatic calling and measurement and the like of the distribution transformer, reduces the fault site investigation time of line managers, further shortens the power transmission recovery time, improves the power supply reliability, changes the passive emergency repair situation caused by technical problems at present, and simultaneously reduces the loss of both customers and national network companies to the maximum extent.
Technical contribution of the present application:
in order to solve the technical problem, the technical scheme adopted by the scheme is as follows: the method for automatically studying and judging the power failure is manufactured by depending on reporting of the power failure event of the distribution transformer, summoning the running state of the distribution transformer and associating the topological relation of the lines, and comprises the following specific steps of:
s1 establishing line model
S101, establishing a general basic line model
As shown in fig. 2, the basic line model includes a trunk line and branch lines, the trunk line is a line directly connected to a power supply point, i.e., a substation, and is divided into sections by a section switch, and each section on the trunk line is a trunk section; the branch line is a line connected to the trunk line through a branch switch.
S102 establishing branch line combination model
As shown in fig. 3, in the circled portion of the figure, one branch line has one or two branch lines of the distribution transformer as small branch lines, and a section of the trunk line has more than two small branch lines each of which is directly connected with the trunk line to form a branch line combination model.
S103, establishing a branched line model
As shown in fig. 4, a line segmented by a line switch on a branch line is referred to as a branch line, and in order to monitor the branch line, the branch line is directly defined as a branch line on a trunk line in arithmetic logic.
S2 setting decision logic
And by a digital summation mode, the main subsection line, the branch line and the distribution transformer are used as a calculation single quantity of a mathematical summation formula, and the power failure of the transformer, the branch line, the subsection line and the whole line is judged. The details are as follows:
examples are:
0+0+0=0；
1+0+0=1，0+1+0=1, 0+0+1=1，
1+1+0=2, 0+1+1=2, 1+0+1=2，
1+1+1=3。
the above three numbers are added, and the result is only two cases, 0 or not 0, when each calculation unit varies between 0 and 1.
The operating state of a distribution transformer has only two conditions, either live or dead. Firstly, taking a distribution transformer as 'calculation single quantity', and assigning a value of 0 when no power exists; when the distribution transformer is electrified, the value is assigned to 1, and when all the 'calculated single quantity' on the branch line is 0, the branch line is judged to be in an electroless state.
Similarly, the branch line on the trunk segment line is used as a "calculation single quantity", and whether the trunk segment line has electricity is determined by determining whether the branch line has electricity, that is, by determining whether the branch line has electricity or not.
Similarly, the segmented line of the whole line is used as 'calculating single quantity', and whether the whole line is electrified or not is judged according to whether the segmented line is electrified or not.
S3 data information source
The running state of the distribution transformer is judged through a remote terminal of the concentrator and the distribution transformer, namely TTU for short, or a power failure alarm signal of an intelligent ammeter under the same distribution transformer.
S4 generated automatic power failure research and judgment method
And establishing the hierarchical logic relationship of the whole line, the segmented line, the branch line and the distribution transformer according to the distribution line model rule by using the operation state data of the distribution transformer through the judgment logic to form automatic power failure research and judgment.
S401 studying and judging process
When a power failure event of the distribution transformer is reported, the circuit research and judgment are started. When the number of power failures of the distribution transformer on one branch line reaches three or more at the same time, the power failure of the branch line is directly judged; when the reported number of the power failure events of the distribution transformers does not exceed three, initiating active calling and testing on the rest distribution transformers of the branch line, judging that the branch has power failure when the calling and testing results are all non-power, and judging that the branch line has power if the current distribution transformer has power; similarly, the operation state of the trunk subsection line is judged through the operation state of the branch line, and then the operation state of the whole line is judged.
S5 research and judgment result and application
As shown in fig. 5, after the determination process is finished, the system presents the operation condition of the line: the functions of power failure warning prompt and active short message pushing are used for informing related personnel of carrying out emergency repair work.
The application runs secretly for a period of time, and the field technician feeds back the beneficial effects that:
firstly, the power failure condition of all or part of the 10 kV distribution line can be comprehensively monitored without adding monitoring equipment on the line, and the construction investment cost of national network companies is reduced.
And secondly, the line power failure condition is actively researched and judged, so that line managers can master the line power failure range in the first time, and can timely arrange emergency repair personnel to carry out fixed-point emergency repair, thereby shortening the links of customer repair reporting and on-site troubleshooting, reducing the power transmission recovery time of the line, improving the power supply reliability of the line and reducing the loss of electric quantity.
And thirdly, the situation of the current passive first-aid repair is changed, the line power failure line management personnel can be mastered at the first time to placate customers by using communication means such as short messages and WeChat, and the high-quality service level of the national network company is improved.
Fourthly, the method is used for monitoring the power failure condition of the line, so that the operation and maintenance conditions of the equipment of the superior unit to the subordinate unit can be realized, and more complete control means can be obtained.
Claims (1)
1. A method for automatically studying and judging power failure based on power distribution internet of things is characterized by comprising the following steps: based on power failure event report of the distribution transformer and running state recall and test of the distribution transformer, the topological relation of the associated line comprises the steps of S1 line model establishment, S2 judgment logic setting, S3 data information source and S4 generation automatic power failure study and judgment method, wherein the step of S1 line model establishment comprises the steps of S101 line model establishment, S102 branch line combination model establishment and S103 branch line model establishment;
the step of establishing a general basic line model in S101 includes that the basic line model includes a trunk line and a branch line, the trunk line is a line directly connected to a power supply point, i.e., a substation, and is divided into sections by a section switch, and each section on the trunk line is a trunk section; the branch line is connected to the trunk line through a branch switch;
the step of S102 establishing the branch line combination model includes that one branch line is provided with one or two distribution transformers and is a small branch line, and more than two small branch lines which are directly connected with the trunk section are combined on one section of the trunk section to form the branch line combination model;
the step of S103 building a branch line model includes that a line segmented by a line switch on a branch line is called a branch line, and the branch line is defined as a branch line on a trunk line;
the step of setting the judgment logic of S2 includes that the trunk section is a trunk subsection line, the branch line and the distribution transformer are used as calculation single quantities of a mathematical summation formula, and the power failure of the transformer, the branch line, the subsection line or the whole line is judged through a digital summation mode;
the step of setting the decision logic in S2 further includes setting the distribution transformer as a calculation unit, and assigning a value of 0 when the distribution transformer is dead; when the distribution transformer is electrified, the value is 1; the single quantity is calculated to be 0 or 1, and the calculation result of the mathematical summation is 0 or not 0;
when all the calculated single quantities on the branch line are 0, judging that the branch line is in a non-electricity state;
taking a branch line on a trunk subsection line as a calculation single quantity, and judging whether the trunk subsection line has electricity or not by judging whether the branch line has electricity or not, namely judging whether the trunk subsection line has electricity or not through the relation of 0 or 1;
taking the segmented line of the whole line as a calculation unit, and judging whether the whole line is electrified or not according to whether the segmented line is electrified or not;
the step of S3 data information source comprises the steps of judging the running state of the distribution transformer through a concentrator, a remote terminal of the distribution transformer or a power failure alarm signal of an intelligent electric meter under the same distribution transformer;
the step of generating the automatic power failure studying and judging method of S4 includes establishing a hierarchical logic relation of a full line, a segmented line, a branch line and a distribution transformer according to a distribution line model rule by using the running state data of the distribution transformer through a judging logic to form automatic power failure studying and judging;
the step of generating the automatic power failure studying and judging method of S4 further includes an S401 studying and judging process, when a power failure event of the distribution transformer is reported, a line is studied and judged; when the number of power failures of the distribution transformer on one branch line is found to be three or more at the same time, the power failure of the branch line is directly judged; when the reported number of the power failure events of the distribution transformers does not exceed three, initiating active calling and testing on the rest distribution transformers of the branch line, judging that the branch has power failure when the calling and testing results are all non-power, and judging that the branch line has power if the current distribution transformer has power; judging the operation state of the trunk subsection line through the operation state of the branch line, and further judging the operation state of the whole line;
the method also comprises a step of studying and judging results and application of S5, and after the judgment process is finished, the system presents the operation condition of the line: the system is characterized in that the system comprises a main line, a branch line and a branch line, wherein the main line is electrified, the main line is unpowered, the branch line is powered off or the branch line is powered off, and related personnel are informed of carrying out emergency repair work in a power-off alarm prompt and active short message pushing mode.
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