CN109472006B - Calculation result screening method based on PSD-BPA - Google Patents
Calculation result screening method based on PSD-BPA Download PDFInfo
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Abstract
The invention discloses a calculation result screening method based on PSD-BPA, which belongs to the technical field of power systems and comprises the following steps: s1, preprocessing different calculation types in a PSD-BPA system; the preprocessing is to set screening preconditions before calculation of the operation mode data of the power system, and set data partitions for each calculation type; s2, setting screening conditions of different dimensions for all calculation results of the calculation types of the S1; s3, searching and comparing the data screened in the S2 with the data in the partition, reserving the data in the corresponding partition, and deleting the data outside the partition; and S4, further screening the data obtained in the step S3 according to different requirements. The invention can rapidly and accurately screen the calculation result according to the requirement by setting the screening rule, simplifies the data processing work of manually searching and selecting the required information at present, improves the correctness of the work, provides support for the extraction of the calculation result of the user, and greatly improves the working efficiency.
Description
Technical Field
The invention belongs to the technical field of power systems, and particularly relates to a PSD-BPA-based calculation result screening method.
Background
The safe and stable operation of the power grid is an important guarantee for ensuring the stable growth of national safety and national economy. With the rapid development of the Chinese power industry, the continuous construction of the direct current transmission project is realized, the operation voltage level of the power grid system is continuously improved, the network scale is continuously enlarged, the large-scale access of new energy such as wind and light is realized, the establishment of the annual operation mode of the power grid system can deeply analyze the safety risk existing in the power grid, the risk management and control work is well, the safe and stable operation of the power grid system is ensured, and the establishment of the annual operation mode of the power grid is an important task.
The PSD-BPA power system analysis program mainly comprises tide and transient programs, has the characteristics of large calculation scale, high calculation speed, good stability, strong functions and the like, has been widely applied to power system planning, scheduling, production operation and scientific research departments in China, and is one of important tools for power system analysis and calculation in China. BPA parameters are mainly input in the form of a card, and data must be strictly recorded in a specified format, otherwise, the software cannot recognize the parameters.
The power flow calculation and the stability calculation of PSD-BPA can generate a large amount of calculation result data, but in the typical operation mode programming, only a small part of overrun or overload data needs to be analyzed, so that the needed data needs to be manually searched in a large amount of data after each calculation, the result is easily misplaced and leaked due to repeated and tedious workload, and the working efficiency is low. Therefore, the PSD-BPA-based calculation result screening method is provided, different search conditions can be set through different calculation categories, required information is rapidly and accurately screened and analyzed, and the annual operation mode calculation efficiency is improved.
Disclosure of Invention
The invention aims to provide a PSD-BPA-based calculation result screening method, so that the defects that after calculation of conventional power system operation mode data, key words are manually searched in huge calculation results to locate required information, then screening is manually performed, the workload is large and data error is easy to cause are overcome.
In order to achieve the above purpose, the invention provides a calculation result screening method based on PSD-BPA, which comprises the following steps:
s1, preprocessing different calculation types in a PSD-BPA system; the preprocessing is to set screening preconditions before calculation of the operation mode data of the power system, and set data partitions for each calculation type;
s2, setting screening conditions of different dimensions for all calculation results of the calculation types of the S1;
s3, searching and comparing the data screened in the S2 with the partition data, reserving the data in the corresponding partition, and deleting the data outside the partition;
and S4, further screening the data obtained in the step S3 according to different requirements.
Further, each of the partitions includes: and the data of each partition are marked by dividing the data of each line, each transformer, each load and each generator set.
Further, the calculation types include: normal mode power flow calculation, N-1 power flow calculation, overhauling N-1 power flow calculation and transient stability calculation.
Further, the step S2 includes the following steps:
s21, setting a line load rate as a screening condition in the power flow calculation in a normal mode, and specifically screening a line efficiency analysis data list and transformer efficiency analysis;
s22, setting an overload line as a screening condition in N-1 tide calculation and reserving data of the overload line part;
s23, in transient stability calculation, setting overload branch data as screening conditions, and reserving data of the overload branch data part.
Further, the step S4 includes the following steps:
s41, setting a required line load rate range, line length, line rated current, load, loss and hundred kilometer loss proportion in power flow calculation in a normal mode;
s42, setting the range of a required overload line in N-1 tide calculation;
s43, in transient stability calculation, setting required overload branch data, wherein the method comprises the following steps: branch name, rated current, judgment overload percentage, actual current, actual overload percentage, active power, reactive power and apparent power range.
Further, the method also comprises the following steps:
s5, selecting different calculation types in the S1 according to the operation mode data of the power system to perform corresponding calculation, and obtaining a calculation result;
and S6, screening the required data according to the calculation result screening conditions of the S1-S4, and storing and recording in an excel table.
Compared with the prior art, the invention has the following beneficial effects: according to the PSD-BPA-based calculation result screening method, the screening rules are set, and the calculation results are screened rapidly and accurately according to the requirements, so that the data processing work of manually searching and selecting the required information is simplified, the accuracy of the work is improved, support is provided for the extraction of the calculation results of users, and the working efficiency is greatly improved.
Detailed Description
The following description of the embodiments of the present invention will be apparent and complete, and it is to be understood that the embodiments described are merely some, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The PSD-BPA-based calculation result screening method provided by the invention comprises the following steps:
s1, preprocessing different calculation types in a PSD-BPA system, namely setting screening preconditions before calculation of power system operation mode data, and setting data partitions for each calculation type; each partition includes: the data of each partition are marked by division according to the data of the respective line, the transformer, the load and the generator set; the calculation types include: load flow calculation in a normal mode, N-1 load flow calculation and transient stability calculation.
In the prior art, the calculation results of the power flow calculation, the N-1 power flow calculation, the overhaul N-1 power flow calculation and the transient stability calculation of the power system operation mode data in a normal mode are thousands of lines and tens of lines or even a few lines, the actual analysis results only need to be dozens of lines or even a few lines, and the additional calculation result data are redundant for analysis. Taking the power flow calculation in a normal mode as an example, the data height after the power flow calculation is tens of thousands, wherein only whether the calculation is converged, the iteration number is large, whether error prompt exists or not and the line load rate are checked.
S2, the calculation data required by each calculation type are different, and the screening rule is changed due to the change of the analysis criteria, so that screening conditions with different dimensions are required to be set in the calculation results of different calculation types of S1, and the screening conditions are specifically as follows:
s21, setting a line load rate as a screening condition in the power flow calculation in a normal mode, and specifically screening a line efficiency analysis data list and transformer efficiency analysis;
s22, setting an overload line as a screening condition in N-1 tide calculation and reserving data of the overload line part;
s23, in transient stability calculation, setting overload branch data as screening conditions, and reserving data of the overload branch data part.
S3, searching and comparing the data screened in the S2 with the partition road base, reserving the data of the corresponding lines in the partition, and deleting the data of the lines outside the partition;
s4, further screening the data obtained in the step S3 according to different requirements, and specifically:
s41, setting a required line load rate range, line length, line rated current, load, loss and hundred kilometer loss proportion in power flow calculation in a normal mode;
s42, setting the range of a required overload line in N-1 tide calculation;
s43, in transient stability calculation, setting required overload branch data, wherein the method comprises the following steps: branch name, rated current, judgment overload percentage, actual current, actual overload percentage, active power, reactive power and apparent power range.
S5, selecting different calculation types in the S1 according to the operation mode data of the power system to perform corresponding calculation, and obtaining a calculation result;
and S6, screening the required data according to the calculation result screening conditions of the S1-S4, and storing and recording in an excel table.
An example of 3 types of computation are:
s51, in the trend calculation in the normal mode, screening is carried out according to the screening rule set in the S2; specific:
s5101, searching a line efficiency analysis data list and a transformer efficiency analysis in a calculation result, and reserving data of the line efficiency analysis data list and the transformer efficiency analysis part;
s5102, searching and comparing the line efficiency analysis data list and the transformer efficiency analysis data obtained in the S4101 with a partition line library, reserving the line data in the partition, and deleting the line data outside the partition;
s5103, screening according to the load rate range and the total loss rate range of the transformer set in the S2, and reserving data lines in the range; for example, a province only needs the data of the partition and the load rate exceeds 80 percent, namely, the load rate range is set to be more than 80 percent;
s5104, recording the result in an excel table.
S52, screening according to the screening rule set in the S2 in the calculation of the N-1 tide;
s5201, searching an overload line in a calculation result, and reserving data of the overload line part;
s5202, searching and comparing the overload line data obtained in the S4201 with the partition line library, reserving line data of the lines in the partition, and deleting line data of the lines in the partition;
s5203, screening according to the line overload rate range set in the S2, and reserving data lines in the range;
s5204, recording the result in an excel table.
S53, screening according to the screening rules set in the S2 in transient stability calculation;
s5301, searching a branch data list overloaded after calculation in a calculation result, and reserving data of the branch data list overloaded after calculation;
s5302, searching and comparing the data of the branch data list overloaded after the calculation obtained in the S4301 with the partition line library, reserving line data of the lines in the partition, and deleting line data of the lines outside the partition;
s4303, screening according to the branch data overload rate range set in the S2, and reserving data rows in the range;
s4304, recording the result in an excel table.
After the calculation of the conventional power system operation mode data, the key words are manually searched in huge calculation results to position the required information, and then the screening is manually performed, so that the workload is large and the data is easy to miss. According to the PSD-BPA-based calculation result screening method, the screening rules are set, and the calculation results are screened rapidly and accurately according to the requirements, so that the data processing work of manually searching and selecting the required information is simplified, the accuracy of the work is improved, support is provided for the extraction of the calculation results of users, and the working efficiency is greatly improved.
The foregoing disclosure is merely illustrative of specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art will readily recognize that changes and modifications are possible within the scope of the present invention.
Claims (4)
1. A calculation result screening method based on PSD-BPA is characterized by comprising the following steps: the method comprises the following steps:
s1, preprocessing different calculation types in a PSD-BPA system; the preprocessing is to set screening preconditions before calculation of the operation mode data of the power system, and set data partitions for each calculation type;
s2, setting screening conditions of different dimensions for all calculation results of the calculation types of the S1;
s3, searching and comparing the data screened in the S2 with the partition data, reserving the data in the corresponding partition, and deleting the data outside the partition;
s4, screening the data obtained in the S3 again according to different requirements;
the step S2 comprises the following steps:
s21, setting a line load rate as a screening condition in the power flow calculation in a normal mode, and specifically screening a line efficiency analysis data list and transformer efficiency analysis;
s22, setting an overload line as a screening condition in N-1 tide calculation, and reserving data of the overload line part;
s23, in transient stability calculation, setting overload branch data as screening conditions, and reserving data of the overload branch data part;
the step S4 comprises the following steps:
s41, setting a required line load rate range, line length, line rated current, load, loss and hundred kilometer loss proportion in power flow calculation in a normal mode;
s42, setting the range of a required overload line in N-1 tide calculation;
s43, in transient stability calculation, setting required overload branch data, wherein the method comprises the following steps: branch name, rated current, judgment overload percentage, actual current, actual overload percentage, active power, reactive power and apparent power range.
2. The PSD-BPA-based calculation result screening method according to claim 1, characterized in that: each of the partitions includes: and the data of each partition are marked by dividing the data of each line, each transformer, each load and each generator set.
3. The PSD-BPA-based calculation result screening method according to claim 1, characterized in that: the calculation types include: normal mode power flow calculation, N-1 power flow calculation, overhauling N-1 power flow calculation and transient stability calculation.
4. The PSD-BPA-based calculation result screening method according to claim 1, characterized in that: the method also comprises the following steps:
s5, selecting different calculation types in the S1 according to the operation mode data of the power system to perform corresponding calculation, and obtaining a calculation result;
and S6, screening the required data according to the calculation result screening conditions of the S1-S4, and storing and recording in an excel table.
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