CN114580957A - Power grid infrastructure process control method, system and medium based on digital twin technology - Google Patents
Power grid infrastructure process control method, system and medium based on digital twin technology Download PDFInfo
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Abstract
The invention discloses a method, a system and a medium for managing and controlling a power grid infrastructure process based on a digital twinning technology, wherein the method for managing and controlling the power grid infrastructure process based on the digital twinning technology comprises the steps of collecting real-time three-dimensional characteristic points of each equipment building in a target project under the current construction progress; and comparing the real-time three-dimensional characteristic points with the three-dimensional characteristic points of the space-time sequence digital twin established for the target project according to the construction plan so as to manage and control the infrastructure process. The method has the advantages of being practical and feasible in engineering, low in cost, accurate and reliable, and capable of managing and controlling the progress of the power grid infrastructure process, providing timely and accurate early warning prompt information, reducing labor intensity and safety risks of manual on-site progress checking, and ensuring that the power grid infrastructure site can be constructed according to plans.
Description
Technical Field
The invention relates to a digital management technology for power grid construction, in particular to a method, a system and a medium for managing and controlling a power grid construction process based on a digital twin technology.
Background
The electric power industry in China gains the change of the earth coverage, builds a strong intelligent power grid with the highest voltage level, the most complex grid structure and the highest power supply reliability all over the world, and provides a safe and sufficient electric power guarantee for the stable development of domestic economy and livelihood. A novel power system mainly comprising new energy is quickly and efficiently constructed, and countless power grid construction projects can not be started. At present, the process control of a power grid infrastructure site is mainly realized by a mode of manpower site patrol and camera remote monitoring, and the process control is extremely dependent on manpower work, so that the hidden dangers of high labor intensity, artificial negligence loopholes, untimely problem discovery and the like are brought. By means of a digital twinning technology and in combination with a power grid space-time algorithm and a video three-dimensional feature point extraction method, real-time control of a infrastructure site process is achieved, hidden dangers are automatically identified, early warning information is intelligently judged and provided, labor intensity and safety risks of manual site inspection progress are reduced, and planned construction of the power grid infrastructure site is guaranteed.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: aiming at the problems in the prior art, the invention provides a method, a system and a medium for managing and controlling the power grid infrastructure construction process based on a digital twinning technology, and the method, the system and the medium have the advantages of feasibility, lower cost, accuracy and reliability in engineering, can manage and control the progress of the power grid infrastructure construction process, provide timely and accurate early warning prompt information, reduce the labor intensity and safety risk of manual field progress check, and ensure that the power grid infrastructure site can be constructed according to a plan.
In order to solve the technical problems, the invention adopts the technical scheme that:
a power grid infrastructure process control method based on a digital twinning technology comprises the following steps:
1) acquiring real-time three-dimensional feature points of each equipment building in a target project under the current construction progress;
2) and comparing the real-time three-dimensional characteristic points with the three-dimensional characteristic points of the space-time sequence digital twin established for the target project according to the construction plan so as to manage and control the infrastructure process.
Optionally, the space-time sequence digital twin established according to the construction plan for the target project is in the form of (D)s1,Ds2,…,Dsj,…,Dsm) Wherein D iss1～DsmUnit level digital twins respectively representing time points 1 to m, DsjAnd (3) unit-level digital twin bodies at any time point j, wherein m is the total number of time points from the beginning to the end of the project in the construction plan.
Optionally, the infrastructure management and control in step 2) includes determining whether the current construction progress of the target project is ahead or behind, and whether the target project is constructed according to the drawing.
Optionally, step 2) comprises:
2.1) determining a time point j corresponding to the current construction progress, and combining the real-time three-dimensional characteristic points with unit-level digital twins D which are the time point j in the time-space sequence digital twins established for the target project according to the construction plansjComparing the three-dimensional characteristic points, judging that the current construction progress is normal if the three-dimensional characteristic points are consistent, ending and exiting; otherwise, skipping to the next step;
2.2) sequentially combining the real-time three-dimensional characteristic points and the unit-level digital twins D behind the time point j in the space-time sequence digital twins established for the target project according to the construction plansj+1～DsmComparing the three-dimensional characteristic points, if unit-level digital twin bodies with consistent three-dimensional characteristic points are found, judging that the current construction progress is advanced, ending and exiting; sequentially combining the real-time three-dimensional characteristic points and the unit-level digital twin D before the time point j in the space-time sequence digital twin D established for the target project according to the construction plan1～Dsj-1Comparing the three-dimensional characteristic points, if unit-level digital twin bodies with consistent three-dimensional characteristic points are found, judging that the current construction progress is delayed, ending and exiting; otherwise, skipping to the next step;
and 2.3) judging that unit-level digital twins with consistent three-dimensional feature points cannot be found, wherein the current construction progress is not constructed according to a drawing.
Optionally, the step 1) of collecting the real-time three-dimensional feature points of each equipment building in the target project at the current construction progress specifically refers to extracting the real-time three-dimensional feature points of each equipment building in the target project at the current construction progress from a video obtained by field collection.
Optionally, the extracting real-time three-dimensional feature points of each equipment building in the target project under the current construction progress includes: and identifying the characteristic points of each equipment building in the target project by using a preset image identification model according to the image frames in the video acquired from the field, and converting the plane coordinates of the characteristic points into three-dimensional coordinates according to the coordinate conversion parameters of the equipment acquiring the video from the field so as to obtain the real-time three-dimensional characteristic points of each equipment building in the target project under the current construction progress.
Optionally, the device for acquiring the video on site is a ball control or unmanned aerial vehicle.
Optionally, step 2) is preceded by the step of establishing a space-time sequence digital twin:
s1) respectively constructing three-dimensional models of 1 st to n equipment buildings in the target project;
s2) generating device-level digital twins D of the ith device building from the three-dimensional model and attribute information of any of the ith device buildings for the 1 st to nth device buildingsdi；
S3) combining the space geographic information and the connection relationship among the equipment buildings, and combining the equipment level digital twins D of the n equipment buildingsd1～DdnUnit level digital twin formation body D corresponding to combination target items；
S4) based on the unit-level digital twins D according to the construction plansGenerating a unit-level digital twin D at an arbitrary time j from the start of a project to the end of the projectsjThus the space-time sequence of the target item is a digital twin (D)s1,Ds2,…,Dsj,…,Dsm) Wherein D issmAnd the unit-level digital twin bodies represent a time point m, wherein m is the total number of time points from the beginning to the end of the project in the construction plan.
In addition, the invention also provides a power grid infrastructure process control system based on the digital twinning technology, which comprises a microprocessor and a memory which are connected with each other, wherein the microprocessor stores steps which are programmed or configured to execute the power grid infrastructure process control method based on the digital twinning technology.
In addition, the invention further provides a computer readable storage medium, wherein a computer program is stored in the computer readable storage medium, and the computer program is used for being executed by a microprocessor to implement the steps of the power grid infrastructure process control method based on the digital twin technology.
Compared with the prior art, the invention mainly has the following advantages:
1. according to the invention, real-time control of the process of the capital construction site is realized through a digital twin technology, hidden dangers exist in automatic identification, and compared with the traditional process control mode relying on manual monitoring, the process control method can greatly reduce the manual labor intensity and the safety risk.
2. The method compares the real-time three-dimensional characteristic points with the three-dimensional characteristic points of the digital twins in the time-space sequence digital twins established for the target project according to the construction plan so as to manage and control the construction process, can provide timely and accurate early warning prompt information, can greatly improve the accuracy and timeliness of finding hidden trouble problems, and ensures that the power grid construction site can be constructed according to the plan.
Drawings
FIG. 1 is a schematic basic flow diagram of an exemplary process of the present invention.
FIG. 2 is a schematic view of a complete flow of the method according to the embodiment of the present invention.
Detailed Description
The method, the system and the medium for managing and controlling the power grid infrastructure process based on the digital twinning technology are further described in detail below by taking the infrastructure construction process of the 220kV substation as an example.
As shown in fig. 1, the method for managing and controlling the power grid infrastructure process based on the digital twin technology in the embodiment includes:
1) acquiring real-time three-dimensional feature points of each equipment building in a target project under the current construction progress;
in this embodiment, the equipment building of the target project includes electrical equipment and buildings, such as a 220kV main transformer, 220kV GIS equipment, 110kV GIS equipment, reactive compensation equipment, a switch room, a secondary room, and the like.
2) And comparing the real-time three-dimensional characteristic points with the three-dimensional characteristic points of the digital twins in the time-space sequence digital twins established for the target project according to the construction plan so as to carry out the control of the infrastructure process.
In the present embodiment, the form of the space-time sequence digital twin created according to the construction plan for the target project is (D)s1,Ds2,…,Dsj,…,Dsm) Wherein D iss1～DsmUnit level digital twins respectively representing time points 1 to m, DsjAnd (3) unit-level digital twin bodies at any time point j, wherein m is the total number of time points from the beginning to the end of the project in the construction plan.
The infrastructure process management and control in step 2) of this embodiment includes determining whether the current construction progress of the target project is ahead or behind, and whether the target project is constructed according to the drawing.
Referring to fig. 2, step 2) in this embodiment includes:
2.1) determining a time point j corresponding to the current construction progress, and combining the real-time three-dimensional characteristic points with unit-level digital twins D which are the time point j in the time-space sequence digital twins established for the target project according to the construction plansjComparing the three-dimensional characteristic points, judging that the current construction progress is normal if the three-dimensional characteristic points are consistent, ending and exiting; otherwise, skipping to the next step;
2.2) sequentially combining the real-time three-dimensional characteristic points and the unit-level digital twins D behind the time point j in the space-time sequence digital twins established for the target project according to the construction plansj+1～DsmIf unit-level digital twins with the same three-dimensional feature points are found, judging that the current construction progress is advanced (the advanced progress can be determined according to the time points of the matched unit-level digital twins), ending and exiting; sequentially combining the real-time three-dimensional characteristic points and the unit-level digital twins D in the space-time sequence digital twins established for the target project according to the construction plan before the time point j1～Dsj-1If unit-level digital twins with consistent three-dimensional feature points are found, judging that the current construction progress is lagged (the lagged progress can be determined according to the time points of the matched unit-level digital twins), ending and exiting; otherwise, skipping to the next step;
and 2.3) judging that unit-level digital twins with consistent three-dimensional feature points cannot be found, wherein the current construction progress is not constructed according to a drawing.
In this embodiment, the step 1) of acquiring the real-time three-dimensional feature points of each equipment building in the target project at the current construction progress specifically refers to extracting the real-time three-dimensional feature points of each equipment building in the target project at the current construction progress from a video acquired on site.
In this embodiment, extracting real-time three-dimensional feature points of each equipment building in the target project at the current construction progress includes: and identifying the characteristic points of each equipment building in the target project by using a preset image identification model according to the image frames in the video acquired from the field, and converting the plane coordinates of the characteristic points into three-dimensional coordinates according to the coordinate conversion parameters of the equipment acquiring the video from the field so as to obtain the real-time three-dimensional characteristic points of each equipment building in the target project under the current construction progress. It should be noted that: firstly, it is a known method to perform image recognition by using an image recognition model, for example, in this embodiment, a Corner Detection (Corner Detection) method is used to quickly extract feature points of each device building in the target item, and in addition, a machine learning model (for example, a deep convolutional neural network) may be used to extract feature points of each device building in the target item as needed. Secondly, converting the plane coordinates of the feature points into three-dimensional coordinates according to coordinate conversion parameters of equipment for acquiring videos on site is also a known method for carrying out space positioning based on a camera. The present application relates only to the basic application of the above known methods and will not be described in detail herein. Wherein, video equipment of on-the-spot collection can adopt cloth accuse ball (camera) or unmanned aerial vehicle as required.
Referring to fig. 2, step 2) in this embodiment further includes a step of establishing a space-time sequence digital twin:
s1) respectively constructing three-dimensional models of 1 st to n equipment buildings in the target project;
in this embodiment, the equipment building of the target project includes electrical equipment and buildings, such as a 220kV main transformer, 220kV GIS equipment, 110kV GIS equipment, reactive compensation equipment, a switch room, a secondary room, and the like, and three-dimensional models are constructed one by one according to a design drawing, and at the same time, the appearance accuracy needs to meet the requirements.
S2) generating device-level digital twins D of the ith device building from the three-dimensional model and attribute information of any of the ith device buildings for the 1 st to nth device buildingsdi；
S3) combining the space geographic information and the connection relation among the equipment buildings, the equipment-level digital twin D of the n equipment buildings is formedd1～DdnUnit level digital twin formation body D corresponding to combination target items；
S4) based on the unit-level digital twins D according to the construction plansGenerating a unit-level digital twin D at an arbitrary time j from the start of a project to the end of the projectsjThus the space-time sequence of the target item is a digital twin (D)s1,Ds2,…,Dsj,…,Dsm) Wherein D issmAnd the unit-level digital twin bodies represent a time point m, wherein m is the total number of time points from the beginning to the end of the project in the construction plan. The twin body D is based on unit level digitalsGenerating a unit-level digital twin D at an arbitrary time j from the start of a project to the end of the projectsjFor the basic application of the existing digital twinning technology, which is essentially to generate three-dimensional models of equipment buildings under different construction schedules, the embodiment is only the basic application of the existing digital twinning technology, and does not relate to the improvement of the existing digital twinning technology, so the specific implementation of the existing digital twinning technology is not described in detail herein.
The total number m of time points from the beginning to the end of the project in the construction plan can be specified as required, for example, days are used as time points in the embodiment, so that the infrastructure management and control in the step 2) includes determining whether the current construction progress of the target project is advanced or delayed, and the granularity of achievable days. In this embodiment, since the project start date is 1/2022 and the project end date is expected to be 30/6/2022 in the construction plan, the number of the space-time sequence digital twin is modified to a time point, which can be expressed as:
Ds20220101,Ds20220102,…,Ds20220630；
wherein Ds20220101Namely the unit level digital twin D corresponding to 1 month and 1 day in 2022s1，Ds20220102Namely the unit level digital twin D corresponding to 1 month and 2 days in 2022s2By analogy, Ds20220630Namely the unit level digital twin D corresponding to 30/6/2022sm. Taking 3, 1 and 2022 as a time point example corresponding to the current construction progress, and collecting real-time three-dimensional feature points of each equipment building in the target project in step 1) under the current construction progress to be recorded as Bs20220301In this embodiment, step 2) includes:
step 1: determining a time point j corresponding to the current construction progress to be 2022 years, 3 months and 1 day, and enabling a real-time three-dimensional feature point Bs20220301The unit-level digital twin D is the same as the unit-level digital twin D of 3 months and 1 days in 2022 in space-time sequence digital twin established according to a construction plan for a target projects20220301Comparing the three-dimensional characteristic points, judging that the current construction progress is normal if the three-dimensional characteristic points are consistent with the three-dimensional characteristic points, prompting that the construction installation progress is normal, ending and exiting; otherwise, skipping to the next step;
step 2: sequentially combining the real-time three-dimensional feature points Bs20220301Unit level digital twinning D3/1/2022s20220302,Ds20220303,…,Ds20220630Comparing the three-dimensional characteristic points, if unit-level digital twin bodies with consistent three-dimensional characteristic points are found, judging that the current construction progress is advanced, prompting that the construction and installation progress is advanced, ending and exiting; sequentially combining the real-time three-dimensional feature points Bs20220301Unit level digital twin D of 3 months and 1 day before 2022 yearss20220101,Ds20220102,…,Ds20220228Comparing the three-dimensional characteristic points, if unit-level digital twin bodies with consistent three-dimensional characteristic points are found, judging that the current construction progress is delayed, prompting that the construction and installation progress is delayed, ending and exiting; otherwise, skipping to the next step;
and step 3: and judging that unit-level digital twin bodies with consistent three-dimensional feature points cannot be found, and prompting that construction and installation are not carried out according to the drawing when the current construction progress is not carried out according to the drawing.
In summary, the method includes the steps of collecting real-time three-dimensional feature points of each equipment building in a target project under the current construction progress; the real-time three-dimensional characteristic points are compared with the three-dimensional characteristic points of the digital twin bodies in the time-space sequence digital twin body established for the target project according to the construction plan to manage and control the infrastructure process, so that the method has the advantages of feasibility, low cost, accuracy and reliability in engineering, can manage and control the progress of the power grid infrastructure process, provides timely and accurate early warning prompt information, reduces the labor intensity and safety risk of manual on-site progress checking, and ensures that the power grid infrastructure site can be constructed according to the plan.
In addition, the present embodiment also provides a power grid infrastructure process control system based on the digital twinning technology, which includes a microprocessor and a memory, which are connected to each other, and the microprocessor stores therein steps programmed or configured to execute the aforementioned power grid infrastructure process control method based on the digital twinning technology.
In addition, the present embodiment also provides a computer readable storage medium, where a computer program is stored, where the computer program is used for being executed by a microprocessor to implement the steps of the foregoing power grid infrastructure process management and control method based on the digital twin technology.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-readable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein. The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks. These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks. These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (10)
1. A power grid infrastructure process control method based on a digital twin technology is characterized by comprising the following steps:
1) acquiring real-time three-dimensional feature points of each equipment building in a target project under the current construction progress;
2) and comparing the real-time three-dimensional characteristic points with the three-dimensional characteristic points of the space-time sequence digital twin established for the target project according to the construction plan so as to manage and control the infrastructure process.
2. The method for managing and controlling the power grid infrastructure process based on the digital twinning technology as claimed in claim 1, wherein the time-space sequence digital twin established according to the construction plan for the target project is in the form of (D)s1,Ds2,…,Dsj,…,Dsm) Wherein D iss1～DsmUnit level digital twins respectively representing time points 1 to m, DsjAnd (3) unit-level digital twin bodies at any time point j, wherein m is the total number of time points from the beginning to the end of the project in the construction plan.
3. The method for managing and controlling the power grid infrastructure process based on the digital twin technology as claimed in claim 2, wherein the infrastructure process management and control in the step 2) includes determining whether the current construction progress of the target project is advanced or delayed and whether the target project is constructed according to the drawing.
4. The method for managing and controlling the power grid infrastructure construction process based on the digital twin technology as claimed in claim 3, wherein the step 2) comprises the following steps:
2.1) determining a time point j corresponding to the current construction progress, and combining the real-time three-dimensional characteristic points with unit-level digital twins D which are the time point j in the time-space sequence digital twins established for the target project according to the construction plansjComparing the three-dimensional characteristic points, judging that the current construction progress is normal if the three-dimensional characteristic points are consistent, ending and exiting; otherwise, skipping to the next step;
2.2) sequentially combining the real-time three-dimensional characteristic points and the unit-level digital twins D behind the time point j in the space-time sequence digital twins established for the target project according to the construction plansj+1～DsmComparing the three-dimensional characteristic points, if unit-level digital twin bodies with consistent three-dimensional characteristic points are found, judging that the current construction progress is advanced, ending and exiting; sequentially combining the real-time three-dimensional characteristic points and the unit-level digital twin D before the time point j in the space-time sequence digital twin D established for the target project according to the construction plan1～Dsj-1Comparing the three-dimensional characteristic points, if unit-level digital twin bodies with consistent three-dimensional characteristic points are found, judging that the current construction progress is delayed, ending and exiting; otherwise, skipping to the next step;
and 2.3) judging that unit-level digital twins with consistent three-dimensional feature points cannot be found, wherein the current construction progress is not constructed according to a drawing.
5. The method for managing and controlling the power grid infrastructure process based on the digital twin technology as claimed in claim 4, wherein the step 1) of collecting the real-time three-dimensional feature points of each equipment building in the target project under the current construction progress specifically means that the real-time three-dimensional feature points of each equipment building in the target project under the current construction progress are extracted from a video obtained by field collection.
6. The method for managing and controlling the power grid infrastructure process based on the digital twin technology according to claim 5, wherein the extracting of the real-time three-dimensional feature points of each equipment building in the target project under the current construction progress comprises: and identifying the characteristic points of each equipment building in the target project by using a preset image identification model according to the image frames in the video acquired from the field, and converting the plane coordinates of the characteristic points into three-dimensional coordinates according to the coordinate conversion parameters of the equipment acquiring the video from the field so as to obtain the real-time three-dimensional characteristic points of each equipment building in the target project under the current construction progress.
7. The method for managing and controlling the power grid infrastructure process based on the digital twin technology as claimed in claim 6, wherein the device for acquiring the video on site is a control ball or an unmanned aerial vehicle.
8. The method for managing and controlling the power grid infrastructure process based on the digital twinning technology according to claim 5, wherein step 2) is preceded by the step of establishing a space-time sequence digital twin:
s1) respectively constructing three-dimensional models of 1 st to n equipment buildings in the target project;
s2) generating device-level digital twins D of the ith device building from the three-dimensional model and attribute information of any of the ith device buildings for the 1 st to nth device buildingsdi；
S3) combining the space geographic information and the connection relationship among the equipment buildings, and combining the equipment level digital twins D of the n equipment buildingsd1～DdnUnit level digital twin formation body D corresponding to combination target items；
S4) based on the unit-level digital twins D according to the construction plansGenerating a unit-level digital twin D at an arbitrary time j from the start of a project to the end of the projectsjThus the space-time sequence of the target item is a digital twin (D)s1,Ds2,…,Dsj,…,Dsm) Wherein D issmAnd the unit-level digital twin bodies represent a time point m, wherein m is the total number of time points from the beginning to the end of the project in the construction plan.
9. A power grid infrastructure process control system based on a digital twinning technology comprises a microprocessor and a memory which are connected with each other, and is characterized in that the microprocessor stores steps which are programmed or configured to execute the power grid infrastructure process control method based on the digital twinning technology according to any one of claims 1-8.
10. A computer-readable storage medium, in which a computer program is stored, wherein the computer program is used for being executed by a microprocessor to implement the steps of the digital twinning technology-based power grid infrastructure management and control method according to any one of claims 1 to 8.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116167248A (en) * | 2023-04-21 | 2023-05-26 | 广东电网有限责任公司广州供电局 | Stay wire iron tower construction process management and control system based on digital twin technology |
| CN116401895A (en) * | 2023-05-05 | 2023-07-07 | 国网浙江省电力有限公司 | Information processing method and system for power marketing management system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116167248A (en) * | 2023-04-21 | 2023-05-26 | 广东电网有限责任公司广州供电局 | Stay wire iron tower construction process management and control system based on digital twin technology |
| CN116167248B (en) * | 2023-04-21 | 2023-07-04 | 广东电网有限责任公司广州供电局 | Stay wire iron tower construction process management and control system based on digital twin technology |
| CN116401895A (en) * | 2023-05-05 | 2023-07-07 | 国网浙江省电力有限公司 | Information processing method and system for power marketing management system |
| CN116401895B (en) * | 2023-05-05 | 2023-09-29 | 国网浙江省电力有限公司 | Information processing method and system for power marketing management system |
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