CN113627014B - PSD-BPA-oriented method for rapidly generating wind power plant current collecting circuit, box transformer and generator set model - Google Patents
PSD-BPA-oriented method for rapidly generating wind power plant current collecting circuit, box transformer and generator set model Download PDFInfo
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
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Abstract
The invention relates to a PSD-BPA-oriented method for rapidly generating a wind power plant collector line, a box transformer and a generator set model, which belongs to the technical field of power systems and comprises the following steps: s1: establishing a typical parameter library of a wind power plant current collection circuit, a box transformer and a generator set; s2: reading collected data of the collecting circuit, the box transformer and the generator set; s3: automatically generating a hash table describing the node names; s4: automatically generating intermediate expression forms of model parameters of the current collecting circuit, the box transformer and the generator set; s5: and automatically generating steady-state and transient simulation data meeting the PSD-PA format requirements. The invention obviously reduces the workload of manual modeling of PSD-BPA users, effectively avoids complicated parameter conversion, data entry and data check work, is beneficial to the PSD-BPA users to quickly establish wind power plant simulation models, and has the advantage of strong engineering practicability.
Description
Technical Field
The invention belongs to the technical field of power systems, and relates to a PSD-BPA-oriented method for rapidly generating a wind power plant collector line, a box transformer and a generator set model.
Background
PSD-BPA is a simulation analysis software of an electric power system, which is introduced by China electric science institute. When power system technicians develop planning design, scientific research, equivalent modeling and the like aiming at a wind power plant, PSD-BPA is usually adopted as a simulation tool. At present, the conventional method for establishing the wind power plant simulation model based on PSD-BPA is as follows: and manually establishing a data card for describing various equipment models in the BPA according to the collected information such as the current collecting circuit, the box transformer, the generator set and the like. The method has the advantages of large workload, lower efficiency and higher error probability, and is mainly because: the number of the generator sets in the wind power plant is large, and some generator sets even up to hundreds of generator sets, and corresponding node cards and dynamic model cards are required to be established for each generator set during modeling; the method comprises the steps that more branches are collected, the per unit value of a line model parameter is calculated according to the length and physical parameters of each section of line during modeling, and a data card is established for each section of line; the number of the box transformer matched with the generator set is large, the per unit value of the model parameter is calculated according to the physical parameter of each box transformer during modeling, and a data card is established for each box transformer.
Although the number of collector lines, boxes and generator sets in wind farms is numerous, analysis of their characteristics is known: in a wind farm, the types of the current collecting circuits are limited, and the current collecting circuits are also limited, but no prior art for integrating the current collecting circuits to establish a simulation model exists at present.
Disclosure of Invention
Therefore, the invention aims to provide a method for rapidly generating a wind power plant collector line, a box transformer and a generator set model for PSD-BPA, thereby helping PSD-BPA users to improve the efficiency of building the wind power plant model and effectively improving the commercial and engineering practical values of PSD-BPA.
In order to achieve the above purpose, the present invention provides the following technical solutions:
A PSD-BPA-oriented method for rapidly generating wind power plant collector line, box transformer and generator set models comprises the following steps:
S1: establishing a typical parameter library of a wind power plant current collection circuit, a box transformer and a generator set;
s2: reading collected data of the collecting circuit, the box transformer and the generator set;
s3: automatically generating a hash table describing the node names;
S4: automatically generating intermediate expression forms of model parameters of the current collecting circuit, the box transformer and the generator set;
s5: and automatically generating steady-state and transient simulation data meeting the PSD-PA format requirements.
Further, in the step S1, parameters of a typical parameter library of the wind farm collector line include a line model, a line allowable current, a positive sequence resistance per unit length, a positive sequence reactance per unit length, a positive sequence susceptance per unit length, a zero sequence resistance per unit length, a zero sequence reactance per unit length, and a zero sequence susceptance per unit length;
Parameters of a typical parameter library of the box transformer comprise box transformer type, rated capacity, rated voltage, winding connection mode, positive sequence short-circuit voltage percentage, positive sequence reactance resistance ratio, zero sequence short-circuit voltage percentage, zero sequence reactance resistance ratio, idle current percentage ratio, idle loss and gear;
parameters of a typical parameter library of the generator set comprise the set type, the set model, the rated power and the manufacturer.
Further, the step S2 specifically includes the following steps:
S21: reading collected wind power plant current collection line data, wherein the collected wind power plant current collection line data comprises necessary data and unnecessary data, and the necessary data refer to data which are necessary to collect, wherein the necessary data comprise a line model, a line length, a line head end node name, a line tail end node name, a line rated voltage and a line tail end connected box transformer name; the unnecessary data refer to the data in the typical parameter library in the step S1, including line allowable current, positive sequence resistance of unit length, positive sequence reactance of unit length, positive sequence susceptance of unit length, zero sequence resistance of unit length, zero sequence reactance of unit length and zero sequence susceptance of unit length;
s22: reading collected box transformer data, wherein the collected box transformer data comprises two kinds of necessary data and unnecessary data, the necessary data comprises box transformer names, box transformer models, box transformer rated capacities, generator set names connected on a low-voltage side of the box transformer, and gears, and the unnecessary data comprises positive sequence short circuit voltage percentages, positive sequence reactance resistance ratios, zero sequence short circuit voltage percentages, zero sequence reactance resistance ratios, no-load current percentage ratios, no-load losses and gears;
S23: and reading the collected generator set data, including the set name, the set type, the set model, the rated power and the manufacturer.
Further, in the hash table in the step S3, the key is an original node name, and the value is composed of BPA format node name, node voltage and node active output information, and the construction steps are as follows:
S31: traversing the collected line data obtained by reading in the step S2, taking the node name of the head end of the line and the node name of the tail end of the line as original node names and taking the original node names as keys of a hash table; in the value corresponding to the key, node voltage is rated voltage of a line, node active default is 0, if the GBK coding length corresponding to the node name serving as the key is not more than 8 bytes, the node name is directly used as a BPA format node name, otherwise, a program generates a new node name with GBK coding length less than or equal to 8 bytes, and the new node name is used as a BPA format file name;
s32: traversing the box transformer data obtained by reading in the step S2, and taking the name of the generator set connected with the low-voltage side of the box transformer as the original node name of the machine end and as a key of a hash table; in the value corresponding to the key, the node voltage is the rated voltage of the low-voltage side of the box, the node active default is 0, if the GBK coding length corresponding to the original node name of the machine end is not more than 8 bytes, the node name is directly used as the BPA format node name, otherwise, a program generates a new node name with the GBK coding length less than or equal to 8 bytes and is used as the BPA format file name;
S33: and traversing the generator set data obtained in the step S2, matching the generator set name with keys in the hash table, and if so, actively updating the nodes in the corresponding values into rated power of the generator set.
Further, the intermediate expression form of the collecting line in step S4 includes information required in the BPA line data card and intermediate information required for generating the BPA line data card, including positive sequence resistance of a unit length, positive sequence reactance of a unit length, positive sequence susceptance of a unit length, zero sequence resistance of a unit length, zero sequence reactance of a unit length, and zero sequence susceptance of a unit length of the line;
The intermediate expression form of the box transformer comprises information required by a BPA transformer data card and intermediate information required by a BPA transformer data card, wherein the intermediate information comprises a box transformer positive sequence short circuit voltage percentage, a positive sequence reactance resistance ratio, a zero sequence short circuit voltage percentage, a zero sequence reactance resistance ratio, an idle current percentage, idle loss and a gear;
The intermediate expression form of the generator set comprises information required by the BPA wind turbine data card and intermediate information required by the BPA wind turbine data card, including a set type, a set model, rated power and a manufacturer.
Further, the intermediate expression generation step described in step S4 is as follows:
S41: traversing the collecting line data obtained in the step S2, and taking the collecting line data as intermediate information required for generating the BPA line data card for the case that unnecessary data are filled in; for the condition that unnecessary data is not filled, searching corresponding records in a line typical parameter library obtained in the step S1, and taking the searched records as intermediate information required for generating the BPA line data card;
S42: according to the collecting line data obtained in the step S2, the hash table of the description node information obtained in the step S3 and the intermediate information required by the generation of the BPA line data card in the step S41, searching and obtaining BPA format node names corresponding to the line head end and the line tail end nodes, and calculating to obtain per unit values of line positive sequence impedance, positive sequence susceptance, zero sequence impedance and zero sequence susceptance, wherein the information belongs to the information required by the generation of the BPA line data card;
S43: traversing the box-type data obtained in the step S2, and taking the box-type data as intermediate information required for generating the BPA transformer data card for the case that unnecessary data are filled in; for the condition that unnecessary data are not filled, searching corresponding records in a transformer typical parameter library obtained in the step S1, and taking the searched records as intermediate information required by generating a BPA transformer data card;
s44: according to the box transformer data obtained in the step S2, the hash table of the description node information obtained in the step S3 and the intermediate information required by the generation of the BPA transformer data card in the step S43, searching for and obtaining BPA format node names corresponding to the nodes at the high-voltage side and the low-voltage side of the box transformer, and calculating to obtain leakage reactance per unit value, equivalent resistance per unit value representing copper loss, equivalent electric conductivity per unit value representing iron loss, exciting susceptance per unit value, high-voltage side gear corresponding voltage, low-voltage side gear corresponding voltage and the like, which belong to the information required by the generation of the BPA transformer data card;
S45: traversing the generator set data obtained in the step S2, taking the set type, the manufacturer and the rated power as intermediate information required for generating the BPA wind turbine data card, searching corresponding records in the typical parameter library of the generator set obtained in the step S1 according to the intermediate information, and generating the information required in the BPA wind turbine data card according to the searched records.
Further, in the step S5, the automatic generation of the steady-state and transient simulation data meeting the PSD-PA format requirement includes the following sub-steps:
s51: generating an empty BPA power flow data file and a stable data file;
S52: generating a B card for describing node information in the BPA power flow data according to the hash table describing the node information in the step S3, and writing the corresponding text form and annotation information into a BPA power flow data file;
S53: generating an L card for describing line information in the BPA tide data and an LO card for describing line information in the BPA stable data according to the intermediate expression form of the collecting line in the step S4, and writing text forms and annotation information corresponding to the two cards into a BPA tide data file and a stable data file respectively;
s54: generating a T card for describing box-change information in the BPA power flow data according to the intermediate expression form of the box-change in the step S4, generating an XO card for describing the box-change zero-sequence information in the BPA stable data for the box-change with a zero-sequence passage, and writing text forms and annotation information corresponding to the two cards into a BPA power flow data file and a stable data file respectively;
s55: and generating a data card for describing the information of the generator set in the BPA stable data according to the intermediate expression form of the generator set in the step S4, and writing the corresponding text form and annotation information into a BPA stable data file.
The invention has the beneficial effects that: according to the PSD-BPA-oriented method for rapidly generating the wind power plant current collecting circuit, the box transformer and the generator set model, simulation data of the wind power plant current collecting circuit, the box transformer and the generator set are automatically generated through a program, and repeated manual coding quantity is greatly reduced. The method has the advantages of strong operability, comprehensive consideration factors, reasonable scheme and the like, and has higher engineering practical value.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objects and other advantages of the invention may be realized and obtained by means of the instrumentalities and combinations particularly pointed out in the specification.
Drawings
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in the following preferred detail with reference to the accompanying drawings, in which:
FIG. 1 is a schematic flow chart of a method for rapidly generating a wind farm collector line, a box transformer and a generator set model for PSD-BPA.
Detailed Description
Other advantages and effects of the present invention will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present invention with reference to specific examples. The invention may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present invention. It should be noted that the illustrations provided in the following embodiments merely illustrate the basic idea of the present invention by way of illustration, and the following embodiments and features in the embodiments may be combined with each other without conflict.
Wherein the drawings are for illustrative purposes only and are shown in schematic, non-physical, and not intended to limit the invention; for the purpose of better illustrating embodiments of the invention, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the size of the actual product; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numbers in the drawings of embodiments of the invention correspond to the same or similar components; in the description of the present invention, it should be understood that, if there are terms such as "upper", "lower", "left", "right", "front", "rear", etc., that indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but not for indicating or suggesting that the referred device or element must have a specific azimuth, be constructed and operated in a specific azimuth, so that the terms describing the positional relationship in the drawings are merely for exemplary illustration and should not be construed as limiting the present invention, and that the specific meaning of the above terms may be understood by those of ordinary skill in the art according to the specific circumstances.
Referring to fig. 1, a method for rapidly generating a wind farm collector line, box transformer and generator set model by using PSD-BPA comprises the following steps:
(1) And establishing a typical parameter library of a wind farm collecting line, a box transformer and a generator set.
Typical parameters of the wind power plant current collection circuit store default parameters of common circuits, wherein the parameters comprise circuit model, circuit allowed current, positive sequence resistance of unit length, positive sequence reactance of unit length, positive sequence susceptance of unit length, zero sequence resistance of unit length, zero sequence reactance of unit length, zero sequence susceptance of unit length and the like; typical parameters of the box transformer store default parameters of common box transformer, wherein the parameters comprise box transformer type, rated capacity, rated voltage, winding connection mode, positive sequence short circuit voltage percentage, positive sequence reactance resistance ratio, zero sequence short circuit voltage percentage, zero sequence reactance resistance ratio, idle current percentage ratio, idle loss, gear and the like; typical parameters of the generator set store parameters of the common wind turbine set, wherein the parameters comprise the set type, the set model, rated power, manufacturers and the like.
Typical parameter libraries may be in the form of Excel tables, database tables, or other file formats that are easy for a program to read. The exemplary parameter library file format includes, but is not limited to, an Excel table data format and a database table format.
Taking the example of using an Excel table to store typical parameters of the collector line, table 1 shows the corresponding table style.
TABLE 1 "collector line" typical parameter library styles
(2) And reading the collected collecting circuit, box transformer and generator set data.
The method comprises the steps of reading collected wind power plant current collecting line data and data related to the current collecting line, wherein the necessary data comprise necessary data and unnecessary data, and the necessary data comprise line types, line lengths, line head end node names, line tail end node names, line rated voltage, line tail end connected box transformer names and the like; the unnecessary data refers to data allowing the typical parameters described in step (1) to be adopted, including line allowable current, positive sequence resistance per unit length, positive sequence reactance per unit length, positive sequence susceptance per unit length, zero sequence resistance per unit length, zero sequence reactance per unit length, zero sequence susceptance per unit length, and the like.
The sub-steps of reading the collected collecting circuit, box transformer and generator set data are as follows:
(2.1) reading collected wind power plant current collecting line data and data related to the current collecting line, wherein the necessary data are two kinds of necessary data and unnecessary data, and the necessary data refer to the data which are necessary to collect, and the necessary data comprise line types, line lengths, line head end node names, line tail end node names, line rated voltage, line tail end connected box transformer names and the like; the unnecessary data refer to the data of the typical parameters in the step (1) which are allowed to be adopted, and include line allowed current, positive sequence resistance of unit length, positive sequence reactance of unit length, positive sequence susceptance of unit length, zero sequence resistance of unit length, zero sequence reactance of unit length, zero sequence susceptance of unit length and the like;
(2.2) reading collected box transformer data, wherein the collected box transformer data and the box transformer related data are divided into two types of necessary data and unnecessary data, the necessary data comprise box transformer names, box transformer models, box transformer rated capacities, generator group names connected on a low-voltage side of the box transformer, gears and the like, and the unnecessary data comprise positive sequence short circuit voltage percentages, positive sequence reactance resistance ratios, zero sequence short circuit voltage percentages, zero sequence reactance resistance ratios, no-load current percentage ratios, no-load losses, gears and the like;
And (2.3) reading the collected generator set data, including a set name, a set type, a set model, rated power, a manufacturer and the like.
(3) A hash table describing the node name is automatically generated.
In the hash table automatically generated for describing node information, the key is an original node name, and the value is composed of information such as BPA format node name, node voltage, node active force and the like.
Taking the Python language as an example to implement the hash table, the hash table may be represented by a dictionary (direct) object in Python, the key is a character string representing the original node name, and the value may be represented by a tuple (tuple) of Python.
The automatic generation of the hash table describing the node information comprises the following substeps:
3.1 traversing the collected line data obtained in the step 2, taking the node names of the head end and the tail end of the line as original node names and as keys of a hash table; in the value corresponding to the key, node voltage is rated voltage of a line, node active default is 0, if the GBK coding length corresponding to the node name serving as the key is not more than 8 bytes, the node name is directly used as a BPA format node name, otherwise, a program generates a new node name with GBK coding length less than or equal to 8 bytes, and the new node name is used as a BPA format file name;
3.2 traversing the box transformer data obtained in the step 2, and taking the generator set name connected with the low-voltage side of the box transformer as the original node name of the machine side and as a key of a hash table; in the value corresponding to the key, the node voltage is the rated voltage of the low-voltage side of the box, the node active default is 0, if the GBK coding length corresponding to the original node name of the machine end is not more than 8 bytes, the node name is directly used as the BPA format node name, otherwise, a new node name with the GBK coding length less than or equal to 8 bytes is generated by a program and is used as the BPA format file name.
And (3.3) traversing the generator set data read in the step (2), matching the generator set name with keys in the hash table, and if so, updating the node active power in the corresponding value to the rated power of the generator set.
(4) And automatically generating intermediate expression forms of model parameters of the current collecting circuit, the box transformer and the generator set.
The intermediate expression form of the current collecting line comprises information required by a BPA line data card and intermediate information required by a BPA line data card, wherein the intermediate information refers to positive sequence resistance of a line unit length, positive sequence reactance of the line unit length, positive sequence susceptance of the line unit length, zero sequence resistance of the line unit length, zero sequence reactance of the line unit length, zero sequence susceptance of the line unit length and the like; the intermediate expression form of the box transformer comprises information required by a BPA transformer data card and intermediate information required by a BPA transformer data card, wherein the intermediate information refers to a box transformer positive sequence short circuit voltage percentage, a positive sequence reactance resistance ratio, a zero sequence short circuit voltage percentage, a zero sequence reactance resistance ratio, an idle current percentage, idle loss, a gear and the like; the intermediate expression form of the generator set comprises information required by the BPA wind turbine data card and intermediate information required by the BPA wind turbine data card, wherein the intermediate information refers to the type of the generator set, the model of the generator set, rated power, manufacturers and the like.
The intermediate expression forms of the collecting circuit, the box transformer and the generator set model parameters can be Excel tables, database tables or other file formats which are easy to read by programs. The file formats describing the intermediate representation include, but are not limited to, excel table data formats and database table formats.
The sub-steps of generating the intermediate expression form of the current collecting line, the box transformer and the generator set are as follows:
(4.1) traversing the collecting line data obtained in the step (2), and taking the collecting line data as intermediate information required for generating the BPA line data card in the case that unnecessary data are filled in; for the condition that unnecessary data is not filled, searching corresponding records in the line typical parameter library obtained in the step (1), and taking the searched records as intermediate information required by generating the BPA line data card;
(4.2) searching for and obtaining BPA format node names corresponding to the line head end and the line tail end nodes according to the current collection line data obtained in the step (2), the hash table of the description node information obtained in the step (3) and the intermediate information required by the BPA line data card generated in the substep (4.1), and calculating to obtain the per unit values of the line positive sequence impedance, the positive sequence susceptance, the zero sequence impedance and the zero sequence susceptance, which belong to the information required by the generation of the BPA line data card;
(4.3) traversing the box data obtained in the step (2), and taking the box data as intermediate information required for generating the BPA transformer data card in the case that unnecessary data are filled in; for the condition that unnecessary data is not filled, searching corresponding records in the transformer typical parameter library obtained in the step (1), and taking the searched records as intermediate information required for generating the BPA transformer data card;
(4.4) searching for intermediate information required by the BPA transformer data card generated in the substep (4.3) according to the box transformer data obtained in the step (2), the hash table of the description node information obtained in the step (3), and the BPA format node names corresponding to the nodes of the high-voltage side and the low-voltage side of the box transformer, and calculating to obtain leakage reactance per unit values, equivalent resistance per unit values representing copper loss, equivalent electric conductivity per unit values representing iron loss, excitation susceptance per unit values, high-voltage side gear corresponding voltages, low-voltage side gear corresponding voltages and the like, which belong to information required by the BPA transformer data card;
and (4.5) traversing the generator set data obtained in the step (2), taking information such as the type of the generator set, the manufacturer, rated power and the like as intermediate information required by generating the BPA wind turbine data card, searching corresponding records in the generator set typical parameter library obtained in the step (1) according to the information, and generating information required by the BPA wind turbine data card according to the searched records.
(5) And automatically generating steady-state and transient simulation data meeting the PSD-PA format requirements.
The automatic generation of steady-state and transient simulation data meeting the PSD-PA format requirement comprises the following substeps:
(5.1) generating an empty BPA power flow data file and a stability data file;
(5.2) generating a B card for describing node information in the BPA power flow data according to the hash table describing the node information in the step (3), and writing the corresponding text form and annotation information into a BPA power flow data file;
(5.3) generating an L card for describing line information in the BPA tide data and an LO card for describing line information in the BPA stable data according to the intermediate expression form of the collecting line in the step (4), and writing text forms and annotation information corresponding to the two cards into a BPA tide data file and a stable data file respectively;
(5.4) generating a T card for describing box change information in the BPA power flow data according to the intermediate expression form of the box change in the step (5), generating an XO card for describing box change zero sequence information in the BPA stable data for the box change with a zero sequence passage, and writing text forms and annotation information corresponding to the two cards into a BPA power flow data file and a stable data file respectively;
And (5.5) generating a data card for describing the generator set information in the BPA stable data according to the intermediate expression form of the generator set in the step (5), and writing the corresponding text form and annotation information into a BPA stable data file.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the present invention, which is intended to be covered by the claims of the present invention.
Claims (3)
1. A method for rapidly generating a wind power plant current collecting circuit, a box transformer and a generator set model facing PSD-BPA is characterized by comprising the following steps: the method comprises the following steps:
S1: establishing a typical parameter library of a wind power plant current collection circuit, a box transformer and a generator set;
s2: reading collected data of the collecting circuit, the box transformer and the generator set;
s3: automatically generating a hash table describing the node names;
S4: automatically generating intermediate expression forms of model parameters of the current collecting circuit, the box transformer and the generator set;
s5: automatically generating steady-state and transient simulation data meeting PSD-BPA format requirements;
in the hash table of the step S3, the key is an original node name, and the value is composed of BPA format node name, node voltage and node active output information, and the construction steps are as follows:
S31: traversing the collected line data obtained by reading in the step S2, taking the node name of the head end of the line and the node name of the tail end of the line as original node names and taking the original node names as keys of a hash table; in the value corresponding to the key, node voltage is rated voltage of a line, node active default is 0, if the GBK coding length corresponding to the node name serving as the key is not more than 8 bytes, the node name is directly used as a BPA format node name, otherwise, a program generates a new node name with GBK coding length less than or equal to 8 bytes, and the new node name is used as a BPA format file name;
s32: traversing the box transformer data obtained by reading in the step S2, and taking the name of the generator set connected with the low-voltage side of the box transformer as the original node name of the machine end and as a key of a hash table; in the value corresponding to the key, the node voltage is the rated voltage of the low-voltage side of the box, the node active default is 0, if the GBK coding length corresponding to the original node name of the machine end is not more than 8 bytes, the node name is directly used as the BPA format node name, otherwise, a program generates a new node name with the GBK coding length less than or equal to 8 bytes and is used as the BPA format file name;
S33: traversing the generator set data obtained by reading in the step S2, matching the name of the generator set with keys in the hash table, and if so, actively updating nodes in the corresponding values into rated power of the generator set;
The intermediate expression form of the collecting line in the step S4 comprises information required by a BPA line data card and intermediate information required by a BPA line data card, wherein the intermediate information comprises positive sequence resistance of a unit length of the line, positive sequence reactance of the unit length, positive sequence susceptance of the unit length, zero sequence resistance of the unit length, zero sequence reactance of the unit length and zero sequence susceptance of the unit length;
The intermediate expression form of the box transformer comprises information required by a BPA transformer data card and intermediate information required by a BPA transformer data card, wherein the intermediate information comprises a box transformer positive sequence short circuit voltage percentage, a positive sequence reactance resistance ratio, a zero sequence short circuit voltage percentage, a zero sequence reactance resistance ratio, an idle current percentage, idle loss and a gear;
the intermediate expression form of the generator set comprises information required by a BPA (business process plant) wind turbine data card and intermediate information required by a BPA wind turbine data card, wherein the intermediate expression form comprises a set type, a set model, rated power and a manufacturer;
The intermediate expression form generation step described in step S4 is as follows:
S41: traversing the collecting line data obtained in the step S2, and taking the collecting line data as intermediate information required for generating the BPA line data card for the case that unnecessary data are filled in; for the condition that unnecessary data is not filled, searching corresponding records in a line typical parameter library obtained in the step S1, and taking the searched records as intermediate information required for generating the BPA line data card;
S42: searching and obtaining BPA format node names corresponding to the head end and the tail end nodes of the line according to the collecting line data obtained in the step S2, the hash table of the description node information obtained in the step S3 and the intermediate information required by the BPA line data card generated in the step S41, and calculating to obtain per unit values of positive sequence impedance, positive sequence susceptance, zero sequence impedance and zero sequence susceptance of the line;
S43: traversing the box-type data obtained in the step S2, and taking the box-type data as intermediate information required for generating the BPA transformer data card for the case that unnecessary data are filled in; for the condition that unnecessary data are not filled, searching corresponding records in a transformer typical parameter library obtained in the step S1, and taking the searched records as intermediate information required by generating a BPA transformer data card;
S44: according to the box transformer data obtained in the step S2, the hash table of the description node information obtained in the step S3 and the intermediate information required by the generation of the BPA transformer data card in the step S43, searching and obtaining BPA format node names corresponding to the nodes at the high-voltage side and the low-voltage side of the box transformer, and calculating to obtain leakage reactance per unit value, equivalent resistance per unit value representing copper loss, equivalent electric conductivity per unit value representing iron loss, excitation susceptance per unit value, high-voltage side gear corresponding voltage and low-voltage side gear corresponding voltage;
S45: traversing the generator set data obtained in the step S2, taking the set type, the manufacturer and the rated power as intermediate information required by generating a BPA (business process plant) wind turbine data card, searching corresponding records in a generator set typical parameter library obtained in the step S1 according to the intermediate information, and generating information required by the BPA wind turbine data card according to the searched records;
In the step S5, the substep of automatically generating steady-state and transient simulation data meeting the PSD-BPA format requirement is as follows:
s51: generating an empty BPA power flow data file and a stable data file;
S52: generating a B card for describing node information in the BPA power flow data according to the hash table describing the node information in the step S3, and writing the corresponding text form and annotation information into a BPA power flow data file;
S53: generating an L card for describing line information in the BPA tide data and an LO card for describing line information in the BPA stable data according to the intermediate expression form of the collecting line in the step S4, and writing text forms and annotation information corresponding to the L card and the LO card into a BPA tide data file and a stable data file respectively;
s54: generating a T card for describing box-change information in the BPA power flow data according to the intermediate expression form of the box-change in the step S4, generating an XO card for describing the box-change zero-sequence information in the BPA stable data for the box-change with a zero-sequence passage, and writing text forms and annotation information corresponding to the two cards into a BPA power flow data file and a stable data file respectively;
s55: and generating a data card for describing the information of the generator set in the BPA stable data according to the intermediate expression form of the generator set in the step S4, and writing the corresponding text form and annotation information into a BPA stable data file.
2. The method for rapidly generating the wind power plant collector line, box transformer and generator set model for PSD-BPA according to claim 1, wherein the method comprises the following steps: in the step S1, parameters of a typical parameter library of a collecting line of a wind farm include a line model, a line allowable current, a positive sequence resistance of a unit length, a positive sequence reactance of a unit length, a positive sequence susceptance of a unit length, a zero sequence resistance of a unit length, a zero sequence reactance of a unit length, and a zero sequence susceptance of a unit length;
Parameters of a typical parameter library of the box transformer comprise box transformer type, rated capacity, rated voltage, winding connection mode, positive sequence short-circuit voltage percentage, positive sequence reactance resistance ratio, zero sequence short-circuit voltage percentage, zero sequence reactance resistance ratio, idle current percentage ratio, idle loss and gear;
parameters of a typical parameter library of the generator set comprise the set type, the set model, the rated power and the manufacturer.
3. The method for rapidly generating the wind power plant collector line, box transformer and generator set model for PSD-BPA according to claim 1, wherein the method comprises the following steps: the step S2 specifically includes the following steps:
S21: reading collected wind power plant current collection line data, wherein the collected wind power plant current collection line data comprises necessary data and unnecessary data, and the necessary data refer to data which are necessary to collect, wherein the necessary data comprise a line model, a line length, a line head end node name, a line tail end node name, a line rated voltage and a line tail end connected box transformer name; the unnecessary data refer to the data in the typical parameter library in the step S1, including line allowable current, positive sequence resistance of unit length, positive sequence reactance of unit length, positive sequence susceptance of unit length, zero sequence resistance of unit length, zero sequence reactance of unit length and zero sequence susceptance of unit length;
s22: reading collected box transformer data, wherein the collected box transformer data comprises two kinds of necessary data and unnecessary data, the necessary data comprises box transformer names, box transformer models, box transformer rated capacities, generator set names connected on a low-voltage side of the box transformer, and gears, and the unnecessary data comprises positive sequence short circuit voltage percentages, positive sequence reactance resistance ratios, zero sequence short circuit voltage percentages, zero sequence reactance resistance ratios, no-load current percentage ratios, no-load losses and gears;
S23: and reading the collected generator set data, including the set name, the set type, the set model, the rated power and the manufacturer.
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