A distribution network project commissioning verification method and system

Abstract

The present invention belongs to the technical field of engineering management, and relates to a method for verifying the commissioning of a distribution network project. The method obtains the whole process data of the project to be verified from various business and data systems; establishes a project status label set and a project equipment label set; for projects whose status is put into operation, establishes a ledger-measurement data association relationship according to the project equipment label set. If the association logic is wrong, it is judged as a suspected false commissioning. If the association relationship is correct, it is judged whether the construction plan matches the start and commissioning time of the project. If the construction time logic is wrong, it is judged as a suspected false commissioning. If the construction time logic is correct, it passes the verification. The present invention makes full use of the operation and ledger data in the relevant business and technical systems, and through mutual verification of the data, reversely verifies the commissioning situation, verifies the authenticity of the project commissioning, and greatly improves the current situation of blindly paying attention to the authenticity of the commissioning.

Description

Technical Field

[0001] The present invention belongs to the technical field of engineering management, and more specifically, relates to a method and system for verifying the commissioning of a distribution network project. Background Art

[0002] Distribution network projects are large and difficult to control. If the projects cannot be completed and put into operation in time each year, it will not only affect the construction period of the next year, but also have an adverse effect on the power supply quality. In the long run, it will seriously affect the construction speed and quality of the distribution network. Since there are tens of thousands of distribution network projects in various provinces and cities each year, it is impossible to conduct a comprehensive inspection manually. If the operation and ledger data in the relevant business and technical systems can be fully utilized to reverse the commissioning situation, it can greatly improve the current situation of blindly checking the authenticity of the commissioning. Summary of the invention

[0003] In order to solve the problem of systematic and automated verification of the commissioning status of a distribution network project, the present invention proposes a method and system for verifying the commissioning status of a distribution network project.

[0004] The present invention is implemented by the following technical solution: A method for verifying the commissioning of a distribution network project, comprising the following specific steps:

[0005] S1. Obtain the whole process data of the project to be verified from various business and data systems;

[0006] S2. Establish a project status tag set: Establish project start tags for the project according to changes before start, cancellations before start, and normal start. 1 , create a project commissioning tag for the project according to whether it has been commissioned or not 2 , according to the completeness or incompleteness of the implementation process data, establish the project process label for the project 3 , and conduct further research and analysis based on the project status label;

[0007] S3. Establishing a project equipment tag set: According to the scope of the project construction, the project is divided into a medium voltage line project and a distribution substation project. According to the type of main equipment included in the project, a main equipment tag set is established for each project;

[0008] S4. Establishing the association between the ledger and the measurement data: For projects that are in the commissioned state, establish the association between the ledger and the measurement data according to the engineering equipment tag set. If the association logic is wrong, it is judged as suspected false commissioning. If the association is correct, proceed to the next step;

[0009] S5. Establishing the logical relationship of engineering construction: For the project judged by step S4, judge whether the construction plan matches the start and commissioning time of the project. If the construction time logic is wrong, it is judged as suspected false commissioning. If the construction time logic is correct, it passes the verification.

[0010] More specifically, in step S1, the business and data systems include the online power grid system, PMS2.0 system, engineering management and control system, dispatching EMS system, electricity consumption information collection system, and distribution automation system. The required information includes project approval information, engineering adjustment information, engineering implementation process information, engineering commissioning information, distribution network equipment ledger, and distribution network equipment operation information.

[0011] More specifically, in step S2, a project start tag x is established according to the status of the project in the PMS2.0 system and the online power grid system. 1 ; For projects where the project establishment data in the PMS2.0 system and the online power grid system are consistent and the online power grid system has no corresponding adjustment data, x 1 = 'Normal start', the project approval data shall be based on the PMS2.0 system; for projects where the project approval data in the PMS2.0 system and the online power grid system are consistent, but there are adjustment and cancellation records in the online power grid system, x 1 = 'Cancel before construction starts', delete the project from the project database; for projects whose project establishment data in the PMS2.0 system and the online power grid system are inconsistent, and there are adjustment and change records in the online power grid system, x 1 ='Changes before construction starts', the project establishment information shall be based on the online power grid system.

[0012] More specifically, in step S2, a project commissioning tag x is established according to the project commissioning status in the project management and control system. 2 ; Combined with the progress of the engineering control system, if the engineering control system has been put into operation, x 2 ='has been put into operation'; if the engineering control system has not been put into operation, x 2 ='Not put into operation', delete the project in the project database.

[0013] More specifically, in step S2, a project process tag x is established based on the project establishment data and the process data in the project management and control system. 3 ; For projects whose project control system name and content are consistent with the project approval materials and have a construction plan, x 3 = 'Complete information'; For projects where the name and content of the project control system are inconsistent with the project approval information, or where there is no construction plan, x 3 ='Incomplete information'.

[0014] More specifically, in step S2, each engineering status tag set x = {x 1 ,x 2 ,x 3}, for the project start label x 1 = 'Normal operation' or x 1 ='Change before construction starts', project commissioning tag x 2 ='Has been put into operation', engineering process label x3 = 'Complete Data' project, go to step S3; for the project process tag x 3 = For projects with "incomplete data", the direct output of the assessment result is "failed verification" because of "incomplete process data".

[0015] More specifically, in step S3, the main equipment category set D1 of the medium voltage line project is {'10kV line / cable', 'switch / circuit breaker / FTU', 'ring main unit / DTU'}, and the main equipment quantity in the construction content of each medium voltage line project is extracted and stored in the corresponding engineering equipment label set; the main equipment category set D2 of the distribution substation project is {'distribution transformer', 'low voltage line'}, and the main equipment quantity in the construction content of each distribution substation project is extracted and stored in the corresponding engineering equipment label set.

[0016] More specifically, the process of step S4 is as follows:

[0017] S41. According to the main equipment category set established in step S3, further distinguish between equipment belonging to the ledger category or the measurement category according to the information available in the business system;

[0018] S42. Evaluation of ledger equipment:

[0019] S421. Switches and ring main units: starting from the project start date and ending on the day before the commissioning verification date, the number of newly installed switches in the distribution automation system for the 10kV line during the statistical period is counted. The statistical result corresponding to the day with the largest number of online switches during the statistical period is taken. If the number of newly installed devices in the distribution automation system is less than the number of devices counted in step S3, the project fails the verification and the judgment result is directly output, with the reason being "the number of online switches does not correspond";

[0020] S422. Distribution transformer: Extract the capacity corresponding to the distribution transformer in the PMS2.0 system. If it is consistent with the construction capacity counted in step S3, this step is passed. Otherwise, the project fails the verification and the judgment result is directly output, with the reason being "the distribution transformer account does not correspond";

[0021] S43. Measurement equipment evaluation

[0022] S431.10kV line / cable: Take the project commissioning date as the starting point and the day before the commissioning verification data acquisition date as the end point, and obtain the voltage and current measurement data of the line during the period. If there is data, this step will be passed. If the voltage and current measurement data are both empty, the project will not pass the verification, and the judgment result will be directly output, and the reason is "no data for the line";

[0023] S432. Distribution transformer: Take the project commissioning date as the starting point and the day before the commissioning verification data collection date as the end point, and obtain the voltage and current measurement data of the distribution transformer during the period. If there is data, this step will be passed. If the voltage and current measurement data are both empty, the project will not pass the verification, and the judgment result will be directly output, and the reason is "no data for distribution transformer";

[0024] S433. Low voltage line: based on the project commissioning date t 0 Taking the date as the reference point, the voltage and current data of distribution transformers and users on seven typical dates before and after this date are obtained.

[0025] More specifically, the process of step S5 is as follows:

[0026] S51. For the projects judged by step S4, extract the project construction plan, i.e., the power outage plan, the power outage work ticket or the live work plan, the live work ticket, and judge whether the construction plan positioning is consistent with the project construction punch-in positioning, and whether the names of the 10kV lines and distribution substations involved are consistent. If they are consistent, proceed to the next step. If they are inconsistent, the construction plan is invalid, and the judgment result that failed the verification is directly output, and the reason is "the construction plan is invalid";

[0027] S52. For construction plans that include power outages, the time of the power outage work ticket must be consistent with the power outage time of the equipment in the EMS system, and the power outage time must be within the project start and commissioning time range, otherwise the construction plan will be invalid and the result of failure to pass the verification will be directly output with the reason being "invalid construction plan";

[0028] S53. The judgment results of the projects verified through the above steps are "real commissioning", and the judgment results of all projects that have not passed the verification are "suspected false commissioning". For projects suspected of false commissioning, if the reason is "manual review is required", the person in charge shall supplement the relevant information and submit it for manual review. Others need to complete the project information according to the reasons and go through the commissioning verification again until they pass the verification.

[0029] The present invention also provides a distribution network project commissioning verification system: including a data connection module, a project label module, a logic analysis module, and a result output module. The data connection module is used to connect data and business systems to obtain required data information; the project label module is used to establish status labels and equipment labels for the project; the logic analysis module establishes a ledger-measurement data logical association relationship and a project construction process logical relationship based on the project label, determines whether the logical relationship involved is correct, and pushes the analysis result to the result output module; the result output module counts and displays the project commissioning status, and distributes it to the corresponding responsible persons for inspection.

[0030] The present invention proposes a distribution network project commissioning verification method and system, which makes full use of the operation and ledger data in the relevant business and technical systems, and through mutual verification of data, reversely verifies the commissioning situation, verifies the authenticity of the project commissioning, and greatly improves the current situation of blindly checking the authenticity of the commissioning. It has the following three main features:

[0031] (1) Using data from the 10kV side, distribution transformer side, and user side to carry out commissioning verification greatly reduces manpower and material resources. Without the need for new facilities, real commissioning verification of projects can be carried out in batches, which has the advantages of high efficiency and low cost.

[0032] (2) By establishing a project status tag set, the impact of project changes and cancellations is fully considered to avoid misjudgment of commissioning results. By establishing a project equipment tag set, the parts of all types of projects that can be used for data verification are extracted, and the commissioning status of this part of the equipment represents the project, which greatly expands the scope of data verification and covers key main equipment that has a greater impact on project results.

[0033] (3) By establishing a correlation between ledger and measurement data and using multi-source data to verify the project commissioning status, the possibility of misjudgment and missed judgment is greatly reduced. In the low-voltage line verification, the voltage difference between users and distribution transformers is used as an auxiliary analysis to reflect the changes in the low-voltage grid, thereby expanding the low-voltage verification scope without adding equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is the flow chart for the commissioning verification of the distribution network project.

[0035] Figure 2 This is a schematic diagram of the distribution network project commissioning verification system. DETAILED DESCRIPTION

[0036] A method for verifying the commissioning of a distribution network project comprises the following specific steps:

[0037] S1. Obtain the whole process data of the project to be verified from various business and data systems;

[0038] S11. Project data acquisition: obtain project approval data through the PMS2.0 system, obtain project approval and adjustment data through the online power grid system, obtain project implementation process data and project commissioning data through the project management and control system, and store them in the project database.

[0039] S12. Equipment data acquisition: obtain the inventory information of main equipment such as 10kV lines, distribution transformers and switches through the PMS2.0 system, obtain the line DTU, FTU ledger, online status and measurement information from the distribution automation system, obtain the voltage and current data of 10kV lines from the dispatching EMS system, obtain the substation voltage and current data from the power consumption information collection system, and dynamically store them in the equipment information library.

[0040] S2. Establishing a project status tag set;

[0041] S21. Project start label x 1 :Create a project start tag based on the status of the project in the PMS2.0 system and the online power grid system 1 For projects where the project establishment data in the PMS2.0 system and the online power grid system are consistent and the online power grid system has no corresponding adjustment data, 1 = 'Normal start', the project approval data shall be based on the PMS2.0 system; for projects where the project approval data in the PMS2.0 system and the online power grid system are consistent, but there are adjustment and cancellation records in the online power grid system, x 1 ='Cancel before construction starts', delete the project from the project database; for projects whose project establishment data in the PMS2.0 system and the online power grid system are inconsistent, and there are adjustment and change records in the online power grid system, 1 ='Change before construction starts', the project establishment data shall be based on the online power grid system;

[0042] S22. Engineering commissioning label x 2 :Establish engineering commissioning label x according to the engineering commissioning status in the engineering control system 2 . Combined with the progress of the engineering control system, if the engineering control system has been put into operation, x 2 ='has been put into operation'; if the engineering control system has not been put into operation, x 2 ='Not put into operation', delete the project in the project database.

[0043] S23. Engineering process label x 3 :Establish engineering process labels based on engineering project approval data and process data in the engineering control system 3 For projects whose project control system name and content are consistent with the project approval documents and have a construction plan, 3 = 'Complete information'; For projects where the name and content of the project control system are inconsistent with the project approval information, or where there is no construction plan, x 3 ='Incomplete information'.

[0044] S24. Each project status label set x = {x 1 ,x 2 ,x 3}, for the project start label x 1 = 'Normal operation' or x 1 ='Change before construction starts', project commissioning tag x 2 ='Has been put into operation', engineering process label x 3 = 'Complete Data' project, go to step S3; for the project process tag x 3 = For projects with "incomplete data", the direct output of the assessment result is "failed verification" because of "incomplete process data".

[0045] S3. Establishing an engineering equipment tag set;

[0046] S31. According to the scope of construction, the project is divided into medium voltage line project and distribution substation project. The construction scope of medium voltage line project only includes equipment on 10kV line, and the construction scope of distribution substation project includes supporting equipment of distribution transformer and 0.4kV low voltage equipment.

[0047] S32. The main equipment category set D1 of the medium-voltage line project = {'10kV line / cable', 'switch / circuit breaker / FTU', 'ring main unit / DTU'}. Since the PMS2.0 system only records some equipment in the ledger, there is no need to count the equipment other than the main equipment category; extract the main equipment engineering quantity in each medium-voltage line project construction content and store it in the corresponding engineering equipment tag set. The equipment jth 1 The value of each tag is the corresponding engineering quantity. The unified unit of all line engineering quantities is km, and the unified unit of equipment engineering quantities is unit. 1 The construction content of the medium voltage line project is "reconstruction of 2.3km of LGJ-120 conductors, replacement of 3 pole switches and 1 DTU", and the corresponding equipment set D i1 ={'10kV line / cable':2.3,'switch / circuit breaker / FTU':3,'ring main unit / DTU':1}.

[0048] S33. The main equipment category set D2 of the distribution substation project = {'distribution transformer', 'low-voltage line'}. Since the PMS2.0 system only records some equipment in the ledger, there is no need to count the equipment outside the main equipment category; extract the main equipment engineering quantity in the construction content of each distribution substation project and store it in the corresponding engineering equipment tag set. The equipment jth 2 The value of each tag is the corresponding engineering quantity. The unified unit of all line engineering quantities is km, and the unified unit of transformer engineering quantities is kVA. 2 The construction content of the distribution substation project is "replacement of 1 400kVA distribution transformer and transformation of low-voltage line JKLYJ-70 1.2km", and the corresponding equipment set D i2={'Distribution transformer':'400','Low voltage line':1.2}.

[0049] S4. Establish the relationship between ledger and measurement data.

[0050] S41. According to the main equipment category set established in step S3, and based on the information that can be obtained in the business system, further distinguish between equipment belonging to the ledger type or the measurement type: for medium-voltage line projects, 10kV lines / cables belong to measurement equipment, switches / circuit breakers / FTUs belong to ledger equipment, and ring main units / DTUs belong to ledger equipment; for distribution substation projects, distribution transformers belong to ledger and measurement equipment, and low-voltage lines belong to measurement equipment.

[0051] S42. Research and judgment of ledger equipment

[0052] S421. Switches / circuit breakers / FTUs and ring main units / DTUs: The ledger information of switches and other equipment comes from the distribution automation system. The project start date is taken as the starting point, and the day before the commissioning verification date is taken as the end point. The number of newly built switches (circuit breakers, FTUs) and ring main units (DTUs) of the 10kV line in the distribution automation system during the statistical period is counted. In order to avoid the influence of power failure on cloudy days and equipment failures on the judgment results, the statistical results corresponding to the day with the largest number of online devices during the statistical period are taken. If the number of newly built devices online in the distribution automation system is less than the equipment category set D i1 If the number of devices counted is not found, the project fails the verification and the analysis result is directly output because "the number of online switches does not correspond".

[0053] S422. Distribution transformer: The account information of the distribution transformer comes from the PMS2.0 system. The capacity of the distribution transformer in the PMS2.0 system is extracted and compared with D i2 This step is used for evaluation when the construction capacity of the project is consistent with that in the statistics. Otherwise, the project fails the verification and the evaluation result is directly output because the "distribution transformer ledger does not correspond".

[0054] S43. Measurement equipment evaluation

[0055] S431.10kV line / cable: After the new or renovated line project is put into operation, a measurement point should be established in the dispatching system. The voltage and current data of the line can be queried through the dispatching EMS system. Take the project commissioning date as the starting point and the day before the commissioning verification data acquisition date as the end point to obtain the voltage and current measurement data of the line during the period. If there is data, this step will be used for analysis. If the voltage and current measurement data are both empty, the project has not passed the verification and the analysis result is directly output, and the reason is "no data on the line".

[0056] S432. Distribution transformer: The distribution transformer will send voltage, current and other measurement data in the electricity consumption information collection system, starting from the project commissioning date and ending one day before the commissioning verification data collection date. The voltage and current measurement data of the distribution transformer during the period are obtained. If there is data, this step will be used for analysis. If the voltage and current measurement data are both empty, the project has not passed the verification, and the analysis result is directly output because of "no data from the distribution transformer". S433. Low-voltage line: The low-voltage line itself has no ledger or measurement record in the data system, and the relevant information can be reflected through user data. Taking the project commissioning date t 0 As a reference point, the voltage and current data of distribution transformers and users on seven typical dates before and after this date are obtained, as follows:

[0057] 1) The typical date should be close to the commissioning date and not be a statutory holiday such as the Spring Festival or National Day. Working days are preferred. The temperature and weather changes during this period should not be too great. The 7 typical days before commissioning are t 1 ~t 7 , the 7 typical days after commissioning are t 8 ~t 14 , for the kth day, the local maximum temperature is T kmax , the lowest temperature is T kmin , the maximum temperature change ΔT of 14 typical days max No more than 8℃, minimum temperature change ΔT min The temperature should not exceed 8℃, and it should be sunny or cloudy and rainy all the time. It should not be disastrous weather.

[0058] 2) The voltage and current data of the distribution transformer on the kth day are tq k _u and tq k _i, the maximum current per day is tq k _i max , the corresponding time point is t kp , the maximum current tq k _i max Arrange from large to small, and make a difference between each value and the previous value to form the current maximum value difference sequence diff_i. If there is an abnormal value in the sequence, that is, the first or last value of the sequence differs from other differential results by more than 50%, then remove the date, add a new typical day, and continue to check until there is no abnormal value in diff_i.

[0059] 3) The voltage data of the nth user on the kth day in the distribution station area is yh nk _u, take the 4 hours around the time of the maximum current value every day, calculate the voltage difference between each user and the distribution transformer outlet at each time point at a time point every 30 minutes, and form a voltage difference matrix Y, which is an n'×8 matrix, n' is the number of users, and 8 is the number of time points.

[0060] 4) Take each user at t 1 ~t 7 The maximum voltage difference during nmax1 , average voltage difference y na1 , t 8 ~t 14 The maximum voltage difference during nmax2 , average voltage difference y na2 , if a user y nmax1 <y nmax2 And y na1 <y na2 , then the user's grid structure is likely to be optimized, and the auxiliary item l is counted as 1; l>5 or l>10%*n', indicating that at least one branch line grid structure has been improved to a certain extent, reflecting the changes in the low-voltage line, and passed the verification of this step, otherwise it did not pass the verification of this step. If other parts of the project pass the verification, this step will not be included in the verification results. If the project is a pure low-voltage line reconstruction project, it will not pass the verification and the analysis results will be directly output because of "manual review required".

[0061] S5. Establishing the logical relationship of engineering construction

[0062] S51. For the projects judged through step S4, extract the construction plan, i.e., the power outage plan, the power outage work ticket or the live work plan, the live work ticket, and judge whether the construction plan positioning is consistent with the project construction punch-in positioning, and whether the names of the 10kV lines and distribution substations involved are consistent. If they are consistent, proceed to the next step. If not, the construction plan is invalid, and the judgment result that failed the verification is directly output, and the reason is "the construction plan is invalid."

[0063] S52. For construction plans that include power outages, the time on the power outage work ticket must be consistent with the power outage time of the equipment in the EMS system, and the power outage time must be within the project start and commissioning time range. Otherwise, the construction plan will be invalid and the analysis results that have not passed the verification will be directly output with the reason being "the construction plan is invalid."

[0064] S53. The judgment results of the projects verified through the above steps are "real commissioning", and the judgment results of all projects that have not passed the verification are "suspected false commissioning". For projects suspected of false commissioning, if the reason is "manual review is required", the person in charge can supplement the relevant information and submit it for manual review. Others need to complete the project information according to the reasons and go through the commissioning verification again until they pass the verification.

[0065] In order to implement the above method, the present invention provides a distribution network project commissioning verification system, such as Figure 2As shown: it includes a data connection module 10, a project label module 20, a logic analysis module 30, and a result output module 40. The data connection module 10 is used to connect data and business systems to obtain required data information; the project label module 20 is used to establish status labels and equipment labels for the project; the logic analysis module 30 establishes the logical association relationship between the ledger and the measurement data and the logical relationship of the project construction process based on the project label, and determines whether the logical relationship involved is correct, and pushes the judgment result to the result output module; the result output module 40 makes statistics and displays the project commissioning status, and distributes it to the corresponding responsible person for inspection.

Claims

1. A method for verifying the operation of a distribution network project, characterized in that: The specific steps include: S1. Obtain the whole process data of the project to be verified from various business and data systems; S2. Establish a project status tag set: Establish a project start tag x1 for the project according to changes before start, cancellation before start, and normal start; establish a project operation tag x2 for the project according to whether it has been put into operation or not; establish a project process tag x3 for the project according to whether the implementation process data is complete or incomplete, and conduct further research and judgment based on the project status tags; S3. Establish engineering equipment label set: According to the scope of engineering construction, the project is divided into medium-voltage line project and distribution substation project. According to the type of main equipment included in the project, a main equipment label set is established for each project; the main equipment category set D1 of the medium-voltage line project = {'10kV line / cable', 'switch / circuit breaker / FTU', 'ring main unit / DTU'}, extract the main equipment engineering quantity in each medium-voltage line project construction content, and store it in the corresponding engineering equipment label set; the main equipment category set D2 of the distribution substation project = {'distribution transformer', 'low-voltage line'}, extract the main equipment engineering quantity in each distribution substation project construction content, and store it in the corresponding engineering equipment label set; S4. Establishing the association between the ledger and the measurement data: For projects that are in the commissioned state, establish the association between the ledger and the measurement data according to the engineering equipment tag set. If the association is incorrect, it is judged as suspected false commissioning. If the association is correct, proceed to the next step; S5. Establishing the logical relationship of project construction: For the project judged by step S4, judge whether the construction plan matches the start and commissioning time of the project. If the construction time logic is wrong, it is judged as suspected false commissioning. If the construction time logic is correct, it passes the verification; The process of step S4 is as follows: S41. According to the main equipment category set established in step S3, further distinguish between equipment belonging to the ledger category or the measurement category according to the information available in the business system; S42. Evaluation of ledger equipment: S421. Switches and ring main units: starting from the project start date and ending on the day before the commissioning verification date, the number of newly added switches in the distribution automation system for the 10kV line during the statistical period is counted. The statistical result corresponding to the day with the largest number of online switches during the statistical period is taken. If the number of newly added online devices in the distribution automation system is less than the number of devices counted in step S3, the project fails the verification and the judgment result is directly output, with the reason being "the number of online switches does not correspond"; S422. Distribution transformer: Extract the capacity corresponding to the distribution transformer in the PMS2.0 system. If it is consistent with the construction capacity counted in step S3, this step will be passed. Otherwise, the project will not pass the verification and the judgment result will be directly output. The reason is "the distribution transformer account does not correspond"; S43. Measurement equipment evaluation S431.10kV line / cable: Take the project commissioning date as the starting point and the day before the commissioning verification data acquisition date as the end point, and obtain the voltage and current measurement data of the line during the period. If there is data, this step will be passed. If the voltage and current measurement data are both empty, the project will not pass the verification, and the judgment result will be directly output, and the reason is "no data for the line"; S432. Distribution transformer: Take the project commissioning date as the starting point and the day before the commissioning verification data collection date as the end point, and obtain the voltage and current measurement data of the distribution transformer during the period. If there is data, this step will be passed. If the voltage and current measurement data are both empty, the project will not pass the verification, and the judgment result will be directly output, and the reason is "no data for distribution transformer"; S433. Low-voltage line: Taking the project commissioning date t0 as the reference point, obtain the distribution transformer and user voltage and current data for 7 typical dates before and after this date, as follows: The typical date is close to the commissioning date and is not a statutory holiday, and the working day is preferred; the 7 typical dates before commissioning are t 1~ t 7. The 7 typical dates after commissioning are t 8~ t 14 , for the k The highest local temperature on that day is T kmax , the lowest temperature is T kmin , the maximum temperature change ΔT of 14 typical dates max No more than 8℃, minimum temperature change ΔT min The temperature does not exceed 8℃, and the weather is sunny or cloudy and rainy, and there is no disaster weather; Distribution Transformer k The voltage and current data for the day are tq k _ u and tq k _ i The maximum current per day is tq k _ i max , the corresponding time point is t kp , the maximum current tq k _ i max Arrange from large to small, and make a difference between each value and the previous value to form a maximum current difference sequence diff_i If there are outliers in the sequence, that is, the first or last value of the sequence differs from other differential results by more than 50%, remove the date, add a new typical date, and continue to check until diff_i There are no outliers in the Distribution area n User k The voltage data for the day is yh nk _ u , calculate the voltage difference between each user and the distribution transformer outlet at each time point to form a voltage difference matrix Y, Y is n’ ×8 matrix, n’ is the number of users, 8 is the time point; Take each user in t 1~ t 7. Maximum voltage difference during y nmax1 , average voltage difference y na1 , t 8~ t 14 The maximum voltage difference during y nmax2 , average voltage difference y na2 , if a user y nmax1 < y nmax2 and y na1 < y na2 , then the user network structure is optimized, auxiliary items l Count 1; l >5 or l >10%* n , indicating that at least one branch line grid structure has been improved, reflecting the changes in the low-voltage line, and passed the verification of this step, otherwise it did not pass the verification of this step. If the other parts of the project passed the verification, this step will not be included in the verification result. If the project is a pure low-voltage line reconstruction project, it will not pass the verification and the analysis result will be directly output because of "manual review required".

2. The method for verifying the operation of a distribution network project according to claim 1, characterized in that: In step S1, the business and data systems include the online power grid system, PMS2.0 system, engineering management and control system, dispatching EMS system, electricity consumption information collection system, and distribution automation system. The required information includes project approval information, engineering adjustment information, engineering implementation process information, engineering commissioning information, distribution network equipment ledger, and distribution network equipment operation information.

3. The method for verifying the operation of a distribution network project according to claim 1, characterized in that: In step S2, a project start label x1 is established according to the status of the project in the PMS2.0 system and the online power grid system; for projects whose project establishment data in the PMS2.0 system and the online power grid system are consistent and there is no corresponding adjustment data in the online power grid system, x1='normal start', and the project establishment data is based on the PMS2.0 system; for projects whose project establishment data in the PMS2.0 system and the online power grid system are consistent, but there is an adjustment cancellation record in the online power grid system, x1='cancelled before start', and the project is deleted from the project database; for projects whose project establishment data in the PMS2.0 system and the online power grid system are inconsistent, and there is an adjustment change record in the online power grid system, x1='change before start', and the project establishment data is based on the online power grid system.

4. The method for verifying the operation of a distribution network project according to claim 1, characterized in that: In step S2, a project commissioning tag x2 is established according to the project commissioning status in the project management and control system; combined with the progress in the project management and control system, if the project management and control system has been put into operation, x2='has been put into operation'; if the project management and control system has not yet been put into operation, x2='has not been put into operation', and the project is deleted from the project database.

5. The method for verifying the operation of a distribution network project according to claim 1, characterized in that: In step S2, a project process label x3 is established based on the project establishment information and the process information in the project management and control system; for projects whose project management and control system names and contents are consistent with the project establishment information and have a construction plan, x3 = 'complete information'; for projects whose project management and control system names and contents are inconsistent with the project establishment information or do not have a construction plan, x3 = 'incomplete information'.

6. The method for verifying the operation of a distribution network project according to claim 1, characterized in that: In step S2, for each project status label set x={x1,x2,x3}, for projects with project start label x1='normal start' or x1='change before start', project commissioning label x2='commissioned', and project process label x3='complete data', proceed to step S3; for projects with project process label x3='incomplete data', the analysis result is directly output as failed verification, and the reason is "incomplete process data".

7. The method for verifying the operation of a distribution network project according to claim 1, characterized in that: The process of step S5 is as follows: S51. For the projects judged by step S4, extract the project construction plan, i.e., the power outage plan, the power outage work ticket or the live work plan, the live work ticket, judge whether the construction plan positioning is consistent with the project construction punch-in positioning, and whether the names of the 10kV lines and distribution stations involved are consistent. If they are consistent, proceed to the next step. If they are inconsistent, the construction plan is invalid, and the judgment result that failed the verification is directly output, and the reason is "the construction plan is invalid"; S52. For construction plans that include power outages, the time of the power outage work ticket must be consistent with the power outage time of the equipment in the EMS system, and the power outage time must be within the project start and commissioning time range. Otherwise, the construction plan will be invalid, and the judgment result that failed the verification will be directly output, with the reason being "invalid construction plan"; S53. The judgment results of the projects verified through the above steps are "real commissioning", and the judgment results of all projects that have not passed the verification are "suspected false commissioning". For projects suspected of false commissioning, if the reason is "manual review is required", the person in charge shall supplement the relevant information and submit it for manual review. Others need to complete the project information according to the reasons and go through the commissioning verification again until they pass the verification.

8. A distribution network project commissioning verification system for implementing the verification method described in any one of claims 1-7: comprising a data connection module, a project label module, a logic analysis module, and a result output module, wherein the data connection module is used to connect data and business systems to obtain required data information; the project label module is used to establish status labels and equipment labels for the project; the logic analysis module establishes the ledger-measurement data logical association relationship and the project construction process logical relationship based on the project label, determines whether the logical relationship involved is correct, and pushes the judgment result to the result output module; the result output module counts and displays the project commissioning status, and distributes it to the corresponding responsible persons for inspection.

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