CN114614509A - Analysis method for influence of photovoltaic access on electric energy quality and related device - Google Patents

Abstract

The application discloses a method for analyzing the influence of photovoltaic access on electric energy quality and a related device, wherein the method comprises the following steps: firstly, the information of a marketing database, the information of a metering database and the information of a production database are associated and interacted at regular intervals, so that data synchronization is realized; then, photovoltaic users with poor voltage quality caused by photovoltaic access, photovoltaic users with poor power factor caused by photovoltaic access and photovoltaic users with unbalanced distribution transformer three phases caused by photovoltaic access are screened from meter code information; and finally, generating a report and a list of the electric energy quality failing to meet the public distribution transformer due to distributed access according to photovoltaic users. Compared with the prior art, the method and the device have the advantages that multidimensional analysis of voltage quality failure, power factor failure and three-phase imbalance caused by distributed photovoltaic access is realized, and the technical problem that the prior art cannot comprehensively and deeply analyze the reason for the failure of the power quality of the public distribution transformer is solved.

Description

A method and related device for analyzing the influence of photovoltaic connection on power quality

technical field

The present application relates to the field of electric power technology, and in particular, to a method and related device for analyzing the influence of photovoltaic connection on power quality.

Background technique

As distributed photovoltaics are continuously connected to the power grid, it will have a certain impact on the power quality of the 10kV public distribution transformer in the distribution network. At present, the analysis of the power quality problems of the existing public distribution and transformation is mainly divided into voltage quality, power factor and three-phase imbalance. The in-depth correlation analysis of the technology cannot verify whether the power quality of the distribution transformer is unqualified due to distributed photovoltaics.

The current technical method can detect the simple problem of the power quality of the 10kV public distribution transformer, but there is still a lack of an effective method to judge whether there is a problem with the power quality of the 10kV public distribution transformer caused by the distributed photovoltaic access. The technology cannot comprehensively and deeply analyze the reasons for the unqualified power quality of all public distribution transformers.

SUMMARY OF THE INVENTION

The present application provides an analysis method and related device for the influence of photovoltaic access on power quality, which are used to solve the technical problem that the prior art cannot comprehensively and deeply analyze the reasons for the failure of the power quality of public distribution and transformation.

In view of this, a first aspect of the present application provides a method for analyzing the impact of photovoltaic access on power quality, the method comprising:

Regularly associate and interact with marketing database information, measurement database information and production database information to achieve data synchronization;

Filter out the voltage data that is not in the preset voltage range from the meter code information, obtain the corresponding first distribution transformer ID, calculate the total photovoltaic capacity contained in the first distribution transformer ID, and obtain the photovoltaic access according to the analysis of the total photovoltaic capacity PV users who lead to unqualified voltage quality;

Screen out the power factor that is not within the preset power factor range from the meter code information, obtain the corresponding second distribution transformer ID, calculate the total photovoltaic capacity contained in the second distribution transformer ID, and obtain the photovoltaic connection according to the total photovoltaic capacity analysis. Entering photovoltaic users that cause the power factor to fail;

Filter out the meter code information whose three-phase unbalance degree is greater than the preset threshold from the meter code information, obtain the corresponding third distribution transformer ID, and calculate the total photovoltaic capacity contained in the third distribution transformer ID. According to the total photovoltaic capacity Analyzed and obtained photovoltaic users who caused the three-phase unbalance of distribution transformers due to photovoltaic access;

According to the photovoltaic users, a report and a list of the power quality failure of the utility distribution transformer caused by the distributed access are generated.

Optionally, the periodic association and interaction of marketing database information, measurement database information, and production database information to realize data synchronization, specifically including:

With the marketing database information as the baseline underlying data and the distribution ID as the associated field, the marketing database information and the measurement database information are regularly matched for the first time, and the data that cannot be matched is matched for the second time with the meter code number;

With the production database information as the baseline underlying data and the distribution transformer ID as the associated field, the metering database information and the production database information are regularly matched for the first time, and the data that cannot be matched is matched for the second time with the line name or the distribution transformer name.

Optionally, the voltage data that is not in the preset voltage range is screened from the meter code information, and the corresponding first distribution transformer ID is obtained, and the total photovoltaic capacity contained in the first distribution transformer ID is calculated, according to the photovoltaic total capacity. The capacity analysis shows the photovoltaic users whose voltage quality is unqualified due to photovoltaic access, including:

Screen out the voltage data that is not within the preset voltage range from the meter code information and define it as unqualified voltage quality;

Through the reverse correlation of the table code information with unqualified voltage quality, the distribution transformer capacity, distribution transformer ID and reported installation capacity are obtained, and the reported installation capacity is superimposed to obtain the total photovoltaic capacity of the public distribution transformer connected to the distributed distribution. The relationship between the distribution and variable capacity is obtained by photovoltaic users who have unqualified voltage quality due to photovoltaic access.

Optionally, the power factor that is not within the preset power factor range is screened from the meter code information, and the corresponding second distribution transformer ID is obtained, and the total photovoltaic capacity contained in the second distribution transformer ID is calculated. The total capacity analysis shows the photovoltaic users whose power factor fails due to photovoltaic access, including:

Screen out the power factor that is not within the preset power factor range from the meter code information and define it as failing power factor;

The distribution transformer capacity, distribution transformer ID and reported installation capacity are obtained by inversely correlating the table code information of the failed power factor, and the reported installation capacity is superimposed to obtain the total photovoltaic capacity of the public distribution transformer connected to the distributed distribution. The relationship between distribution and variable capacity is obtained by photovoltaic users who fail to pass the power factor due to photovoltaic access.

Optionally, the meter code information whose three-phase unbalance degree is greater than a preset threshold is selected from the meter code information, and the corresponding third distribution transformer ID is obtained, and the total photovoltaic power contained in the third distribution transformer ID is calculated. capacity, according to the analysis of the total photovoltaic capacity, the photovoltaic users whose photovoltaic access leads to the three-phase unbalance of the distribution transformer are obtained, including:

Screen out the meter code information whose three-phase unbalance degree is greater than the preset threshold from the meter code information and define it as the three-phase unbalance of the distribution transformer;

Through the inverse correlation of the three-phase unbalanced table code information of the distribution transformer, the distribution transformer capacity, the distribution transformer ID and the reported installation capacity are obtained, and the reported installation capacity is superimposed to obtain the total photovoltaic capacity of the public distribution transformer connected to the distributed distribution. The relationship between the capacity and the distribution transformer capacity is obtained from the photovoltaic users who are connected to the photovoltaic system and cause the three-phase imbalance of the distribution transformer.

Optionally, the generation of a report and a list of unqualified power quality of public distribution and transformation caused by distributed access according to the photovoltaic user, specifically includes:

Generates utility distribution transformer reports and corresponding power information graphs including voltage quality failure, power factor failure, and three-phase unbalance.

Optionally, the public distribution transformer report includes: a list of distributed photovoltaic users of the public distribution transformer with unqualified power quality and the reported installed capacity.

A second aspect of the present application provides a system for analyzing the impact of photovoltaic access on power quality, the system comprising:

The synchronization unit is used to regularly associate and interact with the marketing database information, the measurement database information and the production database information, so as to realize data synchronization;

The first analysis unit is used to filter out the voltage data that is not in the preset voltage range from the meter code information and obtain the corresponding first distribution transformer ID, calculate the total photovoltaic capacity contained in the first distribution transformer ID, The total capacity analysis obtains photovoltaic users whose voltage quality is unqualified due to photovoltaic access;

The second analysis unit is configured to filter out the power factor that is not within the preset power factor range from the meter code information, obtain the corresponding second distribution transformer ID, and calculate the total photovoltaic capacity contained in the second distribution transformer ID, according to The total photovoltaic capacity analysis obtains photovoltaic users whose power factor fails due to photovoltaic access;

The third analysis unit is used to filter out the meter code information whose three-phase unbalance degree is greater than the preset threshold from the meter code information, obtain the corresponding third distribution transformer ID, and calculate the photovoltaic power contained in the third distribution transformer ID. Total capacity, according to the total PV capacity analysis, the PV users whose PV access causes the three-phase unbalance of the distribution transformer are obtained;

The generating unit is configured to generate, according to the photovoltaic users, a report and a list of unqualified power quality of public distribution and transformation caused by distributed access.

A third aspect of the present application provides a device for analyzing the impact of photovoltaic access on power quality, the device includes a processor and a memory:

the memory is used to store program code and transmit the program code to the processor;

The processor is configured to execute, according to the instructions in the program code, the steps of the method for analyzing the influence of photovoltaic access on power quality according to the first aspect.

A fourth aspect of the present application provides a computer-readable storage medium, where the computer-readable storage medium is used to store program codes, and the program codes are used to perform the analysis of the impact of photovoltaic access on power quality according to the first aspect above method.

As can be seen from the above technical solutions, the present application has the following advantages:

The present application provides a method for analyzing the impact of photovoltaic access on power quality, including: regularly correlating and interacting with marketing database information, metering database information and production database information to achieve data synchronization; The voltage data of the preset voltage range and the corresponding ID of the first distribution transformer are obtained, and the total photovoltaic capacity contained in the first distribution transformer ID is calculated. Screen out the power factor that is not within the preset power factor range from the table code information and obtain the corresponding second distribution transformer ID, calculate the total photovoltaic capacity contained in the second distribution transformer ID, and obtain the power factor caused by photovoltaic access according to the analysis of the total photovoltaic capacity Unqualified photovoltaic users; screen out the meter code information whose three-phase unbalance is greater than the preset threshold from the meter code information, obtain the corresponding third distribution transformer ID, and calculate the total photovoltaic capacity contained in the third distribution transformer ID. According to the analysis of the total photovoltaic capacity, the photovoltaic users whose three-phase distribution and transformer are unbalanced due to photovoltaic access are obtained; according to the photovoltaic users, the report and list that the power quality of the public distribution and transformer is unqualified due to the distributed access is generated.

Compared with the prior art, this application realizes data interconnection and intercommunication by combining meter code information, marketing photovoltaic user information and production ledger information, and combines the original technical means that can only reveal the unqualified power quality through the application of intelligent analysis means. It can realize the multi-dimensional analysis of voltage quality failure, power factor failure and three-phase imbalance caused by distributed photovoltaic access. The technical problem that the existing technology cannot comprehensively and deeply analyze the reasons for the failure of the power quality of the public distribution transformer is solved.

Description of drawings

FIG. 1 is a schematic flowchart of an embodiment of a method for analyzing the influence of photovoltaic access on power quality provided in an embodiment of the application;

FIG. 2 is a schematic structural diagram of an embodiment of a system for analyzing the influence of photovoltaic access on power quality provided in an embodiment of the present application.

Detailed ways

In order to make those skilled in the art better understand the solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only It is a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

Referring to FIG. 1 , a method for analyzing the influence of photovoltaic access on power quality provided in the embodiment of the present application includes:

Step 101, regularly associate and interact with marketing database information, measurement database information and production database information, thereby realizing data synchronization;

It should be noted that this embodiment first acquires marketing database information, measurement database information and production database information;

Among them, the data obtained from the marketing database information includes the massive database of the marketing system: distributed photovoltaic user number, user name, photovoltaic installation capacity, access to substations, access to 10kV lines, access to distribution transformer names, access distribution transformer IDs, Meter code number, etc.; the data mainly obtained from the metering database information include the metering return database: the meter code number of the public distribution transformer, the contained energy meter data information (including ABC three-phase current information, power factor data, voltage data, Time point data, etc.), distribution transformer name, distribution transformer ID, subordinate 10kV line, etc.; the main data obtained from production database information include: substation name, 10kV line name, 10kV line ID, distribution transformer name, distribution transformer ID, distribution transformer capacity And substation-main transformer-line-distribution transformer topology relationship information.

The specific process of data synchronization is as follows:

1) The data of marketing database information and measurement database information use the marketing database information as the main baseline underlying data, and use the distribution ID as the main associated field to carry out the initial association interaction; for the data that cannot be matched in the initial association interaction, the measurement table code is used. The number is the secondary association field, and the secondary interactive association is carried out; finally, all the successfully associated data are associated, interacted and synchronized daily with the marketing database information and the measurement database information;

2) For the data of the metering database information and the production database information, the production database information is used as the main baseline underlying data, and the distribution transformer ID is used as the main correlation field to carry out the initial correlation interaction; for the data that cannot be matched in the initial correlation interaction, the 10kV line name is used again. The name of the distribution variable is used as a secondary association field to carry out secondary interactive association; finally, all the successfully associated data are associated, interacted and synchronized daily with the measurement database information and the production database information;

3) Through the above steps, the marketing database information, the measurement database information and the production database information are interconnected, correlated and interacted, and synchronized once a day to ensure the accuracy and real-time nature of the data.

Step 102: Screen out the voltage data that is not in the preset voltage range from the meter code information and obtain the corresponding first distribution transformer ID, calculate the total photovoltaic capacity contained in the first distribution transformer ID, and obtain the photovoltaic connection according to the analysis of the total photovoltaic capacity. Entering photovoltaic users who lead to unqualified voltage quality;

It should be noted that the steps for analyzing the failure of voltage quality caused by distributed photovoltaic access in this embodiment are as follows:

1) By screening and analyzing the voltage data in the meter code information, the voltage point that has appeared 235.4V in the meter code is marked as single-point overvoltage, and the voltage point that has appeared 198V in the metering code is defined as single-point low voltage. Voltage;

2) For the meter code that continuously exceeds 1 hour or accumulatively 10 times single-point overvoltage is defined as the voltage is too high; the meter code that continuously exceeds 1 hour or 10 times single-point overvoltage is defined as the voltage is too low; the voltage is too high If the voltage is too low, the voltage quality is not up to standard;

3) Reversely correlate subordinate substations, 10kV lines, public distribution transformer names, distribution transformer capacity, and distribution transformer IDs through the table code information of unqualified voltage quality;

4) Reversely correlate the distributed photovoltaic user name and reported installation capacity contained in the distribution transformer ID through the table code information of unqualified voltage quality;

5) Superimpose the installed capacity of distributed photovoltaic users included in the distribution transformer ID to obtain the total distributed photovoltaic capacity connected to the public distribution transformer. Divide the total distributed photovoltaic access capacity of the public distribution transformer by the distribution transformer capacity. If it is greater than 100%, it is defined as the failure of voltage quality caused by distributed photovoltaic access.

Step 103: Screen out the power factor that is not within the preset power factor range from the meter code information and obtain the corresponding second distribution transformer ID, calculate the total photovoltaic capacity contained in the second distribution transformer ID, and obtain photovoltaic power according to the analysis of the total photovoltaic capacity. Access to photovoltaic users whose power factor fails;

It should be noted that, in this embodiment, the power factor failure analysis steps caused by distributed photovoltaic access are as follows:

1) By screening and analyzing the power factor data in the meter code information, the point where the power factor below 0.9 has appeared in the meter code is marked as a single-point power factor failure;

2) The meter code that fails the single-point power factor for more than 1 hour or 10 times in a row is defined as the power factor failure;

3) Reversely correlate subordinate substations, 10kV lines, public distribution transformer names, distribution transformer capacity, and distribution transformer IDs through the table code information that fails the power factor;

4) Reversely correlate the distributed photovoltaic user name and reported installation capacity contained in the distribution transformer ID through the table code information that fails the power factor;

5) Superimpose the installed capacity of distributed photovoltaic users included in the distribution transformer ID to obtain the total distributed photovoltaic capacity connected to the public distribution transformer. Divide the total distributed photovoltaic access capacity of the public distribution transformer by the distribution transformer capacity. More than 100%, and the installed capacity of a single user accounts for more than 50% of the total capacity of the distributed photovoltaic connected to the distribution transformer, it is defined as the power factor failure caused by the distributed photovoltaic access.

Step 104: Screen out the meter code information whose three-phase unbalance degree is greater than the preset threshold from the meter code information, obtain the corresponding third distribution transformer ID, and calculate the total photovoltaic capacity contained in the third distribution transformer ID. The capacity analysis obtains the photovoltaic users whose three-phase unbalanced distribution and transformer are caused by photovoltaic access;

It should be noted that the steps for analyzing the three-phase unbalance of the distribution transformer caused by the distributed photovoltaic access in this embodiment are as follows:

1) By screening and analyzing the ABC three-phase current data in the meter code information, the maximum absolute value of the current in the ABC three-phase in the single point is defined as the maximum phase current value; the absolute value of the current in the ABC three-phase in the single point is the smallest. is defined as the minimum phase current value;

2) Introduce the concept of three-phase unbalance degree, three-phase unbalance degree=(maximum phase current value-minimum phase current value)/maximum phase current value)*100%;

3) If in the meter code, the monthly three-phase unbalance is greater than 40% for >10 hours according to the natural month, it is defined as the three-phase unbalance of the distribution transformer;

4) Reversely correlate the distributed photovoltaic user name and reported installation capacity contained in the distribution transformer ID through the three-phase unbalanced table code information of the distribution transformer;

5) Superimpose the installed capacity of distributed photovoltaic users included in the distribution transformer ID to obtain the total distributed photovoltaic capacity connected to the public distribution transformer. Divide the total distributed photovoltaic access capacity of the public distribution transformer by the distribution transformer capacity. If it is greater than 100%, and the maximum phase current value in the ABC three-phase for more than 10 hours is actually negative, it is defined as the three-phase imbalance of the distribution transformer caused by the distributed photovoltaic connection.

Step 105: Generate a report and a list of unqualified electric power quality of public distribution and transformation caused by distributed access according to photovoltaic users.

It should be noted that this embodiment automatically generates the number and specific list of public distribution transformers with unqualified power quality in the city, including three general categories including unqualified voltage quality, unqualified power factor, and three-phase imbalance, and generates three types of problems. The voltage curve, current curve and power factor curve of the 10kV public distribution transformer, including the list of distributed photovoltaic users and the reported installation capacity of the public distribution transformer with unqualified power quality.

The above is an example of an analysis method for the influence of photovoltaic connection on power quality provided in the embodiment of the application, and the following is an example of an analysis system for the influence of photovoltaic connection on power quality provided in the embodiment of the application.

Referring to FIG. 2 , a system for analyzing the influence of photovoltaic access on power quality provided in the embodiment of the present application includes:

The synchronization unit 201 is used to regularly associate and interact with the marketing database information, the measurement database information and the production database information, thereby realizing data synchronization;

The first analysis unit 202 is configured to screen out the voltage data that is not within the preset voltage range from the meter code information, obtain the corresponding first distribution transformer ID, and calculate the total photovoltaic capacity contained in the first distribution transformer ID, according to the total photovoltaic capacity. The capacity analysis obtains the photovoltaic users whose voltage quality is unsatisfactory due to photovoltaic access;

The second analysis unit 203 is configured to screen out the power factor that is not within the preset power factor range from the meter code information, obtain the corresponding second distribution transformer ID, and calculate the total photovoltaic capacity contained in the second distribution transformer ID. The total capacity analysis obtains photovoltaic users whose power factor fails due to photovoltaic access;

The third analysis unit 204 is configured to filter out the meter code information whose three-phase unbalance degree is greater than the preset threshold from the meter code information, obtain the corresponding third distribution transformer ID, and calculate the total photovoltaic power contained in the third distribution transformer ID. Capacity, according to the analysis of total photovoltaic capacity, the photovoltaic users whose photovoltaic access causes the three-phase unbalance of the distribution transformer are obtained;

The generating unit 205 is configured to generate, according to photovoltaic users, a report and a list of unqualified power quality of public distribution and transformation caused by distributed access.

Further, the embodiment of the present application also provides a device for analyzing the influence of photovoltaic access on power quality, the device includes a processor and a memory:

the memory is used to store program code and transmit the program code to the processor;

The processor is configured to execute, according to the instructions in the program code, the method for analyzing the influence of photovoltaic access on power quality according to the above method embodiment.

Further, the embodiments of the present application also provide a computer-readable storage medium, where the computer-readable storage medium is used to store program codes, and the program codes are used to execute the photovoltaic access pair described in the foregoing method embodiments. Analysis method of power quality impact.

Those skilled in the art can clearly understand that, for the convenience and brevity of description, for the specific working process of the system and unit described above, reference may be made to the corresponding process in the foregoing method embodiments, which will not be repeated here.

The terms "first", "second", "third", "fourth", etc. in the description of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. . It is to be understood that the data so used may be interchanged under appropriate circumstances such that the embodiments of the application described herein can, for example, be practiced in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having" and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those expressly listed Rather, those steps or units may include other steps or units not expressly listed or inherent to these processes, methods, products or devices.

It should be understood that, in this application, "at least one (item)" refers to one or more, and "a plurality" refers to two or more. "And/or" is used to describe the relationship between related objects, indicating that there can be three kinds of relationships, for example, "A and/or B" can mean: only A, only B, and both A and B exist , where A and B can be singular or plural. The character "/" generally indicates that the associated objects are an "or" relationship. "At least one item(s) below" or similar expressions thereof refer to any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (a) of a, b or c, can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c" ", where a, b, c can be single or multiple.

In the several embodiments provided in this application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit. The above-mentioned integrated units may be implemented in the form of hardware, or may be implemented in the form of software functional units.

The integrated unit, if implemented in the form of a software functional unit and sold or used as an independent product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solutions of the present application can be embodied in the form of software products in essence, or the parts that contribute to the prior art, or all or part of the technical solutions, and the computer software products are stored in a storage medium , including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (full English name: Read-Only Memory, English abbreviation: ROM), random access memory (English full name: Random Access Memory, English abbreviation: RAM), magnetic disks Or various media such as optical discs that can store program codes.

As mentioned above, the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand: The technical solutions described in the embodiments are modified, or some technical features thereof are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions in the embodiments of the present application.

Claims (10)

1. a method for analyzing the impact of photovoltaic access on power quality, is characterized in that, comprising: Regularly associate and interact with marketing database information, measurement database information and production database information to achieve data synchronization; Filter out the voltage data that is not in the preset voltage range from the meter code information, obtain the corresponding first distribution transformer ID, calculate the total photovoltaic capacity contained in the first distribution transformer ID, and obtain the photovoltaic access according to the analysis of the total photovoltaic capacity PV users who lead to unqualified voltage quality; Screen out the power factor that is not within the preset power factor range from the meter code information, obtain the corresponding second distribution transformer ID, calculate the total photovoltaic capacity contained in the second distribution transformer ID, and obtain the photovoltaic connection according to the total photovoltaic capacity analysis. Entering photovoltaic users that cause the power factor to fail; Filter out the meter code information whose three-phase unbalance degree is greater than the preset threshold from the meter code information, obtain the corresponding third distribution transformer ID, and calculate the total photovoltaic capacity contained in the third distribution transformer ID. According to the total photovoltaic capacity Analyzed and obtained photovoltaic users who caused the three-phase unbalance of distribution transformers due to photovoltaic access; According to the photovoltaic users, a report and a list of the power quality failure of the utility distribution transformer caused by the distributed access are generated. 2 . The method for analyzing the impact of photovoltaic access on power quality according to claim 1 , wherein the regularly interacting with marketing database information, metering database information and production database information to realize data synchronization, specifically comprising: 2 . : With the marketing database information as the baseline underlying data and the distribution ID as the associated field, the marketing database information and the measurement database information are regularly matched for the first time, and the data that cannot be matched is matched for the second time with the meter code number; With the production database information as the baseline underlying data and the distribution transformer ID as the associated field, the metering database information and the production database information are regularly matched for the first time, and the data that cannot be matched is matched for the second time with the line name or the distribution transformer name. 3 . The method for analyzing the influence of photovoltaic access on power quality according to claim 1 , wherein the voltage data that is not in the preset voltage range is screened out from the meter code information and the corresponding first distribution transformer is obtained. 4 . ID, calculate the total photovoltaic capacity contained in the first distribution transformer ID, and obtain photovoltaic users whose voltage quality fails due to photovoltaic access according to the analysis of the total photovoltaic capacity, specifically including: Screen out the voltage data that is not within the preset voltage range from the meter code information and define it as unqualified voltage quality; Through the reverse correlation of the table code information with unqualified voltage quality, the distribution transformer capacity, distribution transformer ID and reported installation capacity are obtained, and the reported installation capacity is superimposed to obtain the total photovoltaic capacity of the public distribution transformer connected to the distributed distribution. The relationship between the distribution and variable capacity is obtained by photovoltaic users who have unqualified voltage quality due to photovoltaic access. 4 . The method for analyzing the influence of photovoltaic access on power quality according to claim 1 , wherein the power factor that is not within the preset power factor range is selected from meter code information and the corresponding second power factor is obtained. 5 . Variable ID, calculate the total photovoltaic capacity contained in the second distribution variable ID, and obtain photovoltaic users whose power factor fails due to photovoltaic access according to the analysis of the total photovoltaic capacity, including: Screen out the power factor that is not within the preset power factor range from the meter code information and define it as failing power factor; The distribution transformer capacity, distribution transformer ID and reported installation capacity are obtained by inversely correlating the table code information of the failed power factor, and the reported installation capacity is superimposed to obtain the total photovoltaic capacity of the public distribution transformer connected to the distributed distribution. The relationship between distribution and variable capacity is obtained by photovoltaic users who fail to pass the power factor due to photovoltaic access. 5 . The method for analyzing the influence of photovoltaic access on power quality according to claim 1 , wherein the meter code information whose three-phase unbalance degree is greater than a preset threshold is selected from the meter code information, and the corresponding meter code information is obtained. 6 . The ID of the third distribution transformer is calculated, and the total photovoltaic capacity contained in the third distribution transformer ID is calculated. According to the analysis of the total photovoltaic capacity, the photovoltaic users whose photovoltaic access causes the three-phase imbalance of the distribution transformer are obtained, including: Screen out the meter code information whose three-phase unbalance degree is greater than the preset threshold from the meter code information and define it as the three-phase unbalance of the distribution transformer; Through the inverse correlation of the three-phase unbalanced table code information of the distribution transformer, the distribution transformer capacity, the distribution transformer ID and the reported installation capacity are obtained, and the reported installation capacity is superimposed to obtain the total photovoltaic capacity of the public distribution transformer connected to the distributed distribution. The relationship between the capacity and the distribution transformer capacity is obtained from the photovoltaic users who are connected to the photovoltaic system and cause the three-phase imbalance of the distribution transformer. 6 . The method for analyzing the influence of photovoltaic access on power quality according to claim 1 , wherein generating a report and a list of unqualified power quality of public distribution transformers caused by distributed access based on the photovoltaic users, 7 . Specifically include: Generates utility distribution transformer reports and corresponding power information graphs including voltage quality failure, power factor failure, and three-phase unbalance. 7 . The method for analyzing the impact of photovoltaic access on power quality according to claim 6 , wherein the public distribution transformer report comprises: a list of distributed photovoltaic users and reported installation capacity of the public distribution transformer with unqualified power quality. 8 . 8. A system for analyzing the impact of photovoltaic access on power quality, characterized in that it comprises: The synchronization unit is used to regularly associate and interact with the marketing database information, the measurement database information and the production database information, so as to realize data synchronization; The first analysis unit is used to filter out the voltage data that is not in the preset voltage range from the meter code information and obtain the corresponding first distribution transformer ID, calculate the total photovoltaic capacity contained in the first distribution transformer ID, The total capacity analysis obtains photovoltaic users whose voltage quality is unqualified due to photovoltaic access; The second analysis unit is configured to filter out the power factor that is not within the preset power factor range from the meter code information, obtain the corresponding second distribution transformer ID, and calculate the total photovoltaic capacity contained in the second distribution transformer ID, according to The total photovoltaic capacity analysis obtains photovoltaic users whose power factor fails due to photovoltaic access; The third analysis unit is used to filter out the meter code information whose three-phase unbalance degree is greater than the preset threshold from the meter code information, obtain the corresponding third distribution transformer ID, and calculate the photovoltaic power contained in the third distribution transformer ID. Total capacity, according to the total PV capacity analysis, the PV users whose PV access causes the three-phase unbalance of the distribution transformer are obtained; The generating unit is configured to generate, according to the photovoltaic users, a report and a list of unqualified power quality of public distribution and transformation caused by distributed access. 9. A device for analyzing the impact of photovoltaic access on power quality, characterized in that the device comprises a processor and a memory: the memory is used to store program code and transmit the program code to the processor; The processor is configured to execute the method for analyzing the influence of photovoltaic connection on power quality according to any one of claims 1-7 according to the instructions in the program code. 10. A computer-readable storage medium, wherein the computer-readable storage medium is used to store program codes, and the program codes are used to execute the photovoltaic access to electric energy according to any one of claims 1-7 Methods of analysis of quality effects.

Images