CN113222197A - Precise multidimensional material linkage utilization method of power system based on Internet of things - Google Patents
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Abstract
In order to solve the problem of low efficiency of fault maintenance of secondary equipment in the prior art, the invention provides an accurate multidimensional material linkage utilization method of an electric power system based on the Internet of things, wherein the electric power secondary equipment is finely split, components in the secondary equipment are independently controlled in the operation process, functional components which are idle for a long time and still have long service life are identified and displayed on a material management platform, the functional components are independently split and provided for other equipment to use if necessary, and the disassembled functional components can at least meet basic performance requirements. On the premise of ensuring the performance of the functional components, the cost for replacing the functional components is quantified, and the cost for purchasing new accessories again is compared, so that the optimal solution is finally provided. The whole process of the invention ensures the fine management of materials, fully utilizes the purchased and idle equipment functional components and reduces the maintenance cost of the equipment.
Description
Technical Field
The invention relates to the technical field of material datamation, in particular to a precise multidimensional material linkage utilization method based on the Internet of things for an electric power system.
Background
The secondary electric power equipment is auxiliary equipment for monitoring, measuring, controlling, protecting and regulating the primary equipment in the electric power system. I.e. devices that are not directly connected to the generation of electrical energy. The application range is wide, and the updating and maintaining cost is high. In the prior art, although the purchasing and asset management of the secondary equipment are all taken charge of by an asset department, the asset department of a large enterprise is not a technical line person, so that the operations such as purchasing, updating, scrapping and the like can be carried out only according to the requirements of a business department, and whether available components exist in the equipment or not cannot be judged autonomously. Meanwhile, in order to maintain normal use of components in the secondary equipment, spare part storage of various components in a warehouse is also required.
In the actual use process, a plurality of secondary devices can be applied for scrapping because the components are damaged and cannot be used, but only the components are actually replaced, and the components can still be normally used. However, the components in most of the secondary equipment are non-standard parts and cannot be directly purchased in the market. And the spare assembly cannot be detached from the secondary equipment in use in the prior art for maintenance. This results in a huge waste of resources.
Even if functional components can be disassembled on existing equipment, three problems exist in the process and need to be solved: 1. when a need arises to replace a functional module, the operator does not know where, in addition to the warehouse, there are replaceable functional modules available. 2. Even if a replaceable functional component is known in the familiar area, it is not possible to determine whether the functional component can be removed for use, or whether the component meets various standards for replacement. 3. On the premise of ensuring the first two items, the cost of replacing the components is not lower than that of purchasing new components.
Disclosure of Invention
In order to solve the problems, the invention provides an internet-of-things-based precise multi-dimensional material linkage utilization method for an electric power system, wherein electric power secondary equipment is finely split, assemblies in the secondary equipment are independently controlled in the operation process, functional assemblies which are idle for a long time and still have long service life are identified and displayed on a material management platform, the functional assemblies are independently dismounted and provided for other equipment to use if necessary, and the dismounted functional assemblies can at least meet basic performance requirements. On the premise of ensuring the performance of the functional components, the cost for replacing the functional components is quantified, and the cost for purchasing new accessories again is compared, so that the optimal solution is finally provided.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the accurate multi-dimensional material linkage utilization method based on the Internet of things for the power system comprises a material management and control platform, wherein the material management and control platform is provided with a refined material management module for managing secondary equipment, and the refined material management module is used for carrying out structural analysis on the secondary equipment of a single model to acquire functional component information in the secondary equipment;
the material management and control platform acquires the information of the appointed electric power work area: acquiring the number of in-service lines and the number of matched secondary equipment in the electric power work area; decomposing the matched secondary equipment to obtain specific information of the functional components configured in the matched secondary equipment; acquiring the number of functional components in the secondary equipment which is actually in service from the inspection record,
comparing the functional components in the active secondary equipment with the functional components configured in the decomposed secondary equipment to find out the idle functional components;
sending the related information of the idle functional assembly to a material management and control platform for registration;
the method comprises the steps that after a patrol worker finds a fault in the patrol process and needs to replace a functional component, a maintenance worksheet is declared, the replacement requirement of the functional component is put forward, a material management and control platform automatically retrieves the information of the idle functional component, the geographic position of the idle functional component meeting the requirement is obtained, the distance between the idle functional component and the functional component is calculated according to the geographic position information of the functional component needing to be replaced, the cost of detaching and logistics adopting the idle functional component is judged, and whether the functional component is used or not is judged through the comparison between the cost and the cost of newly purchased functional components;
the method comprises the steps of searching a plurality of idle functional assemblies with the use states close to the functional assemblies to be replaced in the selection of which the replacement cost is lower than that of newly purchased functional assemblies, determining the specifically used idle functional assemblies after combining the use states and the replacement cost, adding maintenance information of secondary equipment where the functional assemblies are located in a maintenance work order, adding a plan of disassembling and operating the functional assemblies by appointed maintenance personnel in a maintenance route, and authorizing operation authorities corresponding to the operation personnel involved in the maintenance process.
Preferably, the vibration threshold and the temperature threshold of the functional component are judged according to the type of the functional component, the running state of the functional component is marked as unused, used normally and overload using state through comparison of the working log and the threshold, and the functional component which is in the overload using state is hidden. The actual use state of the idle functional components in an overload use state cannot be guaranteed, so that the functional components with potential safety hazards are eliminated firstly by setting a threshold value.
Preferably, the relative remaining life of the unused functional component and the used functional component are calculated respectively; and thus whether the replacement requirement is met or not is judged.
Preferably, the method for calculating the relative remaining life of the unused functional component is as follows: obtaining the category of the functional component, obtaining a service life conversion parameter of the functional component according to the category, and calculating the relative service life according to the conversion parameter; and subtracting the relative service life from the expected service life of the functional component to obtain the relative residual life. Unused functional components have a similar linear arrangement of relative service life, only with respect to actual installation age and corresponding service life reduction parameters.
Preferably, the method for comparing the relative remaining life of the functional components once used is: firstly, classifying functional components, and establishing a data set D for the same type of available functional components; the sample point generated at this time is each object p in the single-function component correspondence data set D, is a point in a two-dimensional coordinate system established from the purchase time and the used time of each function component,
the following steps are executed
a) Putting the functional component needing to be replaced into the coordinate system as a core point p 0;
b) setting parameters Eps and MinPts with respect to a core point p0 according to a desired functional component lifetime to form a cluster;
c) sequentially judging whether each object point is contained in the cluster, if the selected data object point p is contained in another previous cluster, skipping the object point, and selecting another data object point; since part of the functional components are still in the database after being selected and before being disassembled, the selected data object points need to be removed;
d) repeating step c) until all points have been processed; selecting a next functional component needing to be replaced as a core point;
selecting an available functional component from a cluster in which each functional component needing to be replaced is located; the replacement cost of each object p is calculated separately.
And preferentially selecting functional components with lower cost for replacement.
In the present invention, a great deal of effort is made to make the relative remaining life of the idle functional components, because for the secondary equipment which has been used for a while, in which the replacement of the functional components is not as new as possible, there is a certain matching relationship between the functional components on the replacement and other components. Generally, the more approximate the functional components in use and replaced, the better. The invention calculates the relative service life by a method similar to data normalization processing, selects the most appropriate idle functional assembly by the relative service life, and performs cost accounting after the selection is finished, thereby ensuring the cost performance of replacement.
Preferably, need to change the functional component on being equipped with the generating line of spare power automatic switching, and idle functional component and the secondary equipment functional component who treats to change in same electric power industry district and when patrolling and examining personnel have corresponding maintenance qualification, authorize behind the application maintenance work order patrolling and examining personnel's maintenance authority to send the functional component positional information that can change immediately. This is the most ideal application scenario for the present invention. Generally, at least 2-3 hours are needed from fault finding to fault list submitting, maintenance work ticket issuing, replacement component picking and replacement finally completing. Moreover, since replacement of the components requires retrieval to a warehouse, repair operations are often not available to service personnel, and additional time is required for dispatched service personnel to find the failure point. After the technical scheme of the invention is adopted, the maintenance time after the fault is found can be shortened to be within half an hour under an ideal state, and the power failure can not be caused under the state.
Preferably, when the idle functional components are in different power work areas, the idle functional components are combined with the inspection plan of the corresponding power work area to make a replacement plan after applying for a maintenance work order. Therefore, the plan of inspection and maintenance is combined and arranged, and the efficiency is improved.
Preferably, the detached functional component sends new positioning information to the material management and control platform after being successfully used after being installed on the new secondary equipment, and establishes associated information with the original secondary equipment. According to the technical scheme, on one hand, the use condition of the functional components in the later period is convenient to track, and in case of the problem after replacement, the tracing is also convenient to carry out, so that asset loss caused by loss of part of the functional components after replacement for many times is avoided.
Preferably, the electric power work area comprises a transformer substation, a substation, an open-close station and a transformer room within a specified range. The electric power work areas are set to be convenient for later-stage calculation of logistics cost, and cost statistics is facilitated.
Through the technical scheme, the invention obtains the usable functional component information through data analysis. The idle functional components can be used, and the newly purchased cost is reduced. The reliability of the functional component is confirmed by the relative life span before the functional component is selected. And the cost accounting is carried out to ensure that the replacement cost is lower than the newly purchased cost. The whole process ensures the fine management of materials, fully utilizes the purchased and idle equipment functional components, and reduces the cost of equipment maintenance.
Drawings
Fig. 1 is a schematic diagram of an idle function component information acquisition process of an internet-of-things-based precision multidimensional material linkage utilization method for an electric power system.
Fig. 2 is a schematic diagram of a recycling process of idle functional components of the accurate multidimensional material linkage utilization method based on the internet of things for the power system.
Fig. 3 is a schematic view of service lives of idle functional components in an embodiment 2 of the internet-of-things-based precision multi-dimensional material linkage utilization method for the power system.
Fig. 4 is a schematic view of a reduced relative service life of each idle functional component in embodiment 2 of the internet-of-things-based precision multi-dimensional material linkage utilization method for the power system.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1 and 2, the method for utilizing the power system based on the internet of things in the linkage manner of the precise multidimensional materials is upgraded on the basis of the existing material control platform, so that the data precision and granulation of the material control platform are improved, and the data processing capacity is improved. The material management and control platform is provided with a refined material management module for managing the secondary equipment, and the refined material management module is used for carrying out structural analysis on the secondary equipment of a single model to acquire functional component information in the secondary equipment;
the material management and control platform acquires the information of the appointed electric power work area: acquiring the number of in-service lines and the number of matched secondary equipment in the electric power work area; decomposing the matched secondary equipment to obtain specific information of the functional components configured in the matched secondary equipment; acquiring the number of functional components in the secondary equipment which is actually in service from the inspection record,
and comparing the functional components in the active secondary equipment with the functional components configured in the decomposed secondary equipment to find out the idle functional components. This step is not a simple quantity comparison, and the management and control of the device in the prior art can only reach the level of the device, but cannot be performed on the functional components of the secondary device alone. The invention refines the management of materials to functional components. The secondary device itself is also designed such that its functional components are not individually available, like the components in a motor vehicle, but are mostly used only in the corresponding secondary device. It is also for this reason that the acquisition costs of some functional components are rather high.
And sending the related information of the idle functional assembly to a material management and control platform for registration.
The inspection personnel declare the maintenance work order after finding the trouble and when needing to change the functional component in the inspection process, and propose the functional component and change the demand, and the nearest idle functional component information of material management and control platform automatic retrieval, and judge whether the idle functional component who retrieves satisfies the demand.
Example 1:
a network communication module in a distribution DTU distribution network automation terminal in a certain switching station can not work normally, and the problem is found during routing inspection. At which point the diagnostics require replacement of the network communication module. The geographical position of the idle functional assembly meeting the requirement is obtained through the material management and control platform, and the fact that another power distribution DTU (dynamic delay unit) distribution network automation terminal is provided with the redundant network communication module is found in the switching station, and the network communication module is in an idle state. The idle network communication module is checked again, and the idle network communication module is tested when being installed and is not actually used after the test. The service life of the power distribution DTU network distribution automation terminal corresponding to the network communication module is 4 years. The relative service life of the redundant network communication module is thus reduced to 1 year, which has a sufficient remaining relative service life to be replaced as a spare part.
The switching station is arranged on a bus provided with the spare power automatic switching device, the idle functional component and the secondary equipment functional component to be replaced are arranged in the same switching station, and the inspection personnel has corresponding maintenance qualification. At the moment, the network communication module is replaced on site, so that power failure cannot be caused, and safety and regulation forbidden items do not exist. In this embodiment, the inspection personnel can be granted the maintenance authority after directly applying for the maintenance work order, and immediately acquire the replaced functional component position information. The patrol personnel directly detach the idle network communication module from the distribution DTU distribution network automatic terminal with the idle network communication module after authorization on the premise of not disconnecting the network, and replace the idle network communication module to the distribution DTU distribution network automatic terminal with a fault. And after debugging, finding out that the fault is solved, recording the replacement in the material management and control platform, and sending the replaced damaged network communication module to a corresponding department for maintenance or scrapping. Such an adjustment reduces the maintenance procedures, which usually require 3 hours in the prior art, to 20 minutes, with good results. Especially, under the condition that the faults are more frequently repaired in summer, the burden of maintaining teams can be effectively reduced.
Example 2:
when an insulating switch of a ring network cabinet in a certain substation is overhauled for three times continuously, the temperature is overhigh, and the fact that a fault occurs and needs to be replaced is judged. There are no unused spare isolation switches in the database that can be replaced. There is also no limited isolation switch in this certain substation. Therefore, it is only possible to search for available insulation switches in the insulation switches that have been used and are now idle in the neighboring work area. The nearby work area is defined to be selected within a range where the cost of calculating replacement and logistics is lower than the cost of newly purchasing the functional component.
As shown in fig. 3 and 4, to obtain sample points of the data sets scanned sequentially according to distance from the database, p0(3,3) is first taken and defined as a core point.
1) The neighborhood of p0 is defined as 1.5, and MinPts () is set to MinPts (2). Setting the number of MinPts () requires enough object points to ensure clustering.
The distance from each point to p0 is calculated as d (p0, p1) = sqrt (4+9) = 3.6.
2) According to the distance from each sample point to p0, a satisfactory object point set { p0, p8, p9} is finally obtained.
3) Because the Eps neighborhood of p0 contains 3 points, greater than MinPts (2), p0 creates a cluster C1 for the core point.
4) All the objects with reachable density starting from the p0 core point are processed, and the final cluster C1 contains points { p0, p8, p9 }.
And (4) calculating the replacement cost of each object point in the same cluster, preferentially calculating the point with the shortest distance from the point to p0, and selecting the object point with the lowest replacement cost as the replaced insulated switch under the same condition.
After the idle functional component is determined to be used, the maintenance information of the secondary equipment where the functional component is located is added in the maintenance work order, the plan of disassembling and operating the functional component is added in the maintenance route by appointed maintenance personnel, and the operation authority corresponding to the operation personnel involved in the maintenance process is authorized.
In this embodiment, the final replacement efficiency is not as fast as in the best case of example 1, but it is also the most economical case.
Example 3: in the transformer substation described in embodiment 2, another ring main unit is found to have a fault of an insulation switch, and the purchase service life of the insulation switch is 5 years. Now we take p 0' (5, 5) as the core point and continue to scan the sample points of the data set sequentially,
1) the neighborhood of p0 ' is calculated, and the distance from each point to p0 ' is calculated as d (p0 ', p12) = sqrt (1+0) = 1.
2) The neighborhood of p 0' is defined as 1.8, and MinPts () is set to MinPts (3). Since the functional component is used for a longer time, a greater range can be opened up in the selection range for the relative remaining life.
3) And obtaining a qualified object point set { p0 ', p9, p10, p12} according to the distance from each sample point to p 0'.
4) During calculation, p9 is found to be already located in the cluster C1, so that p9 is skipped, and finally, a satisfactory object point set { p 0', p10, p12} is obtained.
5) Because the Eps neighborhood of p0 ' contains 3 points, which is consistent with MinPts (3), the cluster C2{ p0 ', p10, p12} is established with p0 ' as the core point.
6) The process is ended.
The object points in the same cluster are preferentially calculated as points closest to p 0' based on the replacement cost calculated for each object point. And (4) calculating the replacement cost of each object point in the same cluster, preferentially calculating the point with the shortest distance from the point to p 0', and selecting the object point with the lowest replacement cost as the replaced insulated switch under the same condition.
The selection of neighborhood values and the core point requirement minimum MinPts () setting during the setting process are related to the data quantity of idle functional elements in the material management platform. If there are more idle functional components, MinPts () may be increased to decrease the distance of each sample point from the core point. If there are fewer idle functional elements, the reverse is true.
After the idle functional component is determined to be used, the maintenance information of the secondary equipment where the functional component is located is added in the maintenance work order, the plan of disassembling and operating the functional component is added in the maintenance route by appointed maintenance personnel, and the operation authority corresponding to the operation personnel involved in the maintenance process is authorized. If the work order of the previous embodiment is not implemented in the process, the work order combination is executed, and the work orders of the embodiment 2 and the embodiment 3 are executed together.
In this process, it has also been found that it is not the unused functional component that is most suitable for replacement, but the functional component that has already been used. Especially, functional components with the converted remaining service life close to that of the replaced secondary equipment are more suitable to be selected under the same conditions.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. Accurate multidimensional material linkage utilization method based on Internet of things for electric power system, including material management and control platform, material management and control platform is equipped with material management module that becomes more meticulous and manages secondary equipment, its characterized in that: the refined material management module is used for carrying out structural analysis on the secondary equipment with a single model to obtain the information of the functional components in the secondary equipment;
the material management and control platform acquires the information of the appointed electric power work area: acquiring the number of in-service lines and the number of matched secondary equipment in the electric power work area; decomposing the matched secondary equipment to obtain specific information of the functional components configured in the matched secondary equipment; acquiring the number of functional components in the secondary equipment which is actually in service from the inspection record,
comparing the functional components in the active secondary equipment with the functional components configured in the decomposed secondary equipment to find out the idle functional components;
sending the related information of the idle functional assembly to a material management and control platform for registration;
the method comprises the steps that after a patrol worker finds a fault in the patrol process and needs to replace a functional component, a maintenance worksheet is declared, the replacement requirement of the functional component is put forward, a material management and control platform automatically retrieves the information of the idle functional component, the geographic position of the idle functional component meeting the requirement is obtained, the distance between the idle functional component and the functional component is calculated according to the geographic position information of the functional component needing to be replaced, the cost of detaching and logistics adopting the idle functional component is judged, and whether the functional component is used or not is judged through the comparison between the cost and the cost of newly purchased functional components;
the method comprises the steps of searching a plurality of idle functional assemblies with the use states close to the functional assemblies to be replaced in the selection of which the replacement cost is lower than that of newly purchased functional assemblies, determining the specifically used idle functional assemblies after combining the use states and the replacement cost, adding maintenance information of secondary equipment where the functional assemblies are located in a maintenance work order, adding a plan of disassembling and operating the functional assemblies by appointed maintenance personnel in a maintenance route, and authorizing operation authorities corresponding to the operation personnel involved in the maintenance process.
2. The method for the internet-of-things-based precise multi-dimensional material linkage utilization of the electric power system as claimed in claim 1, wherein the vibration threshold and the temperature threshold of the functional component are judged according to the type of the functional component, the operation state of the functional component is identified as unused, used normally and overload by comparing the working log with the threshold, and the functional component experiencing the overload use state is hidden.
3. The Internet of things-based precision multi-dimensional material linkage utilization method for the power system as claimed in claim 2, wherein the relative residual lives of unused functional components and used functional components are calculated respectively; and thus whether the replacement requirement is met or not is judged.
4. The Internet of things-based precision multi-dimensional material linkage utilization method for the power system according to claim 3,
the method for calculating the relative residual life of the unused functional component comprises the following steps: obtaining the category of the functional component, obtaining a service life conversion parameter of the functional component according to the category, and calculating the relative service life according to the conversion parameter; and subtracting the relative service life from the expected service life of the functional component to obtain the relative residual life.
5. The Internet of things-based precision multi-dimensional material linkage utilization method for the power system according to claim 4,
the relative remaining life comparison method for the once used functional components is as follows: firstly, classifying functional components, and establishing a data set D for the same type of available functional components; the sample point generated at this time is each object p in the single-function component correspondence data set D, is a point in a two-dimensional coordinate system established from the purchase time and the used time of each function component,
the following steps are executed
a) Putting the functional component needing to be replaced into the coordinate system as a core point p 0;
b) setting parameters Eps and MinPts with respect to a core point p0 according to a desired functional component lifetime to form a cluster;
c) sequentially judging whether each object point is contained in the cluster, if the selected data object point p is contained in another previous cluster, skipping the object point, and selecting another data object point;
d) repeating step c) until all points have been processed; selecting a next functional component needing to be replaced as a core point;
selecting an available functional component from a cluster in which each functional component needing to be replaced is located; the replacement cost of each object p is calculated separately.
6. The Internet of things-based precision multi-dimensional material linkage utilization method for the power system according to any one of claims 1 to 3,
need to change the functional component on being equipped with the generating line of being equipped with spare power automatic switching, and idle functional component and the secondary equipment functional component who treats to change in same electric power work district and when patrolling and examining personnel have corresponding maintenance qualification, authorize behind the application maintenance work order patrolling and examining personnel's maintenance authority to send the functional component positional information that can change immediately.
7. The Internet of things-based precision multi-dimensional material linkage utilization method for the power system according to claim 1, wherein the idle functional components are used for making a replacement plan in combination with a corresponding power work area inspection plan after applying for a maintenance work order when the idle functional components are in different power work areas.
8. The Internet of things-based precision multi-dimensional material linkage utilization method of the electric power system according to any one of claims 1 to 3, characterized in that the detached functional component sends new positioning information to the material management and control platform and establishes associated information with the original secondary equipment after being installed and used successfully on the new secondary equipment.
9. The method for the internet-of-things-based precision multi-dimensional material linkage utilization of the electric power system according to any one of claims 1 to 3, wherein the electric power work area comprises a transformer substation, a substation, an open-close substation and a transformer room within a specified range.
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| CN104182828A (en) * | 2014-08-14 | 2014-12-03 | 国家电网公司 | Method for carrying out secondary equipment whole life cycle management by electronic label |
| CN108073454A (en) * | 2016-11-15 | 2018-05-25 | 阿里巴巴集团控股有限公司 | Resource transfers method and system, headend equipment and rear end equipment |
| CN109285089A (en) * | 2018-10-25 | 2019-01-29 | 天津大学 | A kind of screening technique of electric system thermostabilization safety-critical unit |
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