CN109470973B - Fault card library establishing method based on PSD-BPA - Google Patents
Fault card library establishing method based on PSD-BPA Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
Abstract
The invention discloses a fault card library establishing method based on PSD-BPA, which belongs to the technical field of electric power systems and establishes a standardized fault card library by establishing a standardized database, extracting information required by the fault card library from the standardized database to generate corresponding parameters in the standardized fault card library, and supplementing the fault information provided by a scheduling department and the parameters required by the rest fault cards to the standardized fault card library so as to establish the standardized fault card library with the information required by the fault cards of PSD-BPA. The database generated fault card established according to the invention simplifies the processing work of a large amount of data which needs to be manually generated at present and is easy to make mistakes, ensures the correctness, provides support for stable calculation of a 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 fault card library establishing method based on PSD-BPA.
Background
The safe and stable operation of the power grid is an important guarantee for ensuring the national safety and the stable increase of national economy. With the rapid development of the Chinese power industry and the continuous construction of direct current transmission projects, the operating voltage level of a power grid system is continuously improved, the network scale is continuously enlarged, new energy such as wind and light are accessed in a large scale, the annual operating mode of the power system can deeply analyze the safety risk of the power grid, the risk control work is done, the safe and stable operation of the power system is guaranteed, and the transient stability calculation is an indispensable link.
The PSD-BPA power system analysis program mainly comprises a trend program and a transient program, has the characteristics of large calculation scale, high calculation speed, good stability, strong function and the like, is 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 a card form, data must be strictly input according to a specified format, and otherwise software cannot recognize the data.
In annual operation mode establishment, different fault cards (such as an N-1 fault card of the same-pole line, an N-1 fault card in a maintenance mode, a cross-over fault card, a single-permanent-single-switch refusal fault card of the line, a single-permanent-protection refusal fault card, a three-permanent-single-switch refusal fault card and a power plant full-stop fault card) need to be manufactured for transient stability calculation. With the change of the grid structure of the power grid, the operation of a new transformer substation and the change of a power transmission line every year, a scheduling department updates BPA data of the power grid every year, and fault cards also need to be manufactured again. According to the information provided by scheduling, a large amount of manpower is wasted when fault cards are manufactured one by one, and the trouble workload is very easy to cause fault cards to be wrong and missed, so that the fault card library establishing method based on the PSD-BPA is provided, the fault cards can be generated by scheduling data classification, the fault card library is established, the calculation of the operation mode is convenient, the errors in the fault card establishing process are reduced, and the calculation efficiency of the annual operation mode is improved.
Disclosure of Invention
The invention aims to provide a fault card library establishing method based on PSD-BPA, thereby solving the defects that a large amount of labor is wasted and the fault cards are easy to miss and leak due to complex workload when the fault cards are generated by scheduling data classification in the prior art.
In order to achieve the purpose, the invention provides a fault card library establishing method based on PSD-BPA, which comprises the following steps:
s1, establishing a standardized database in an excel table 1 according to parameters of the transformer substation, the line and the power plant provided by a dispatching department, and setting a modification mark;
s2, establishing a standardized fault card library in an excel table 2 in a classified manner according to different requirements of fault cards in the power system;
s3, extracting information required by the standardized fault card library from the standardized database of the excel table 1 of S1, and importing the information into the standardized fault card library obtained in S2 to generate corresponding parameters;
s4, filling the fault information provided by the dispatching department into the standardized fault card library obtained in the S3;
and S5, filling partial parameters in the standardized fault card library into the standardized data card library which is obtained in S4 and has all information required by the fault database in batch according to actual conditions.
Further, the setting modification marks are marked as modifications in excel table 1, and the marked data can be deleted in batches.
Further, the standardized database includes: the system comprises a line parameter table, a transformer substation parameter table and a power plant parameter table.
Further, the line parameter table includes: the method comprises the following steps of (1) line Chinese name, corresponding node name, line voltage grade, circuit mark of parallel lines, line rated current, line resistance per unit value, line reactance per unit value, line to earth susceptance per unit value and line or segment length;
the transformer substation parameter table comprises: the method comprises the following steps of (1) Chinese name of a transformer substation, name of a corresponding node, voltage grade of the transformer substation, loop marks of parallel lines, rated capacity of a transformer, number of parallel transformers, leakage reactance per unit value, equivalent resistance caused by copper loss, fixed taps of a node 1 and fixed taps of a node 2;
the power plant parameter table includes: the power plant station Chinese name, the corresponding node name, the node voltage grade, the partition name, the maximum active power output, the actual active power output, the maximum reactive power output, the minimum reactive power output and the arranged voltage value or the maximum voltage value.
Further, the fault cards in the standardized fault card library include: the method comprises the steps of N-1 fault cards of the same-pole line, N-1 fault cards in an overhauling mode, cross-over fault cards, single-permanent-single-switch refusal fault cards of the line, single-permanent-protection refusal fault cards, three-permanent-single-switch refusal fault cards, three-permanent-three-switch refusal fault cards and power plant full-stop fault cards.
Further, the method also comprises the following steps: and S6, classifying the data in the standardized fault card library obtained in S5 according to different formats and parameter requirements of different fault cards, and automatically generating the fault cards in lsd.
Compared with the prior art, the invention has the following beneficial effects:
the PSD-BPA-based fault card library establishing method provided by the invention establishes a standardized fault card library by establishing a standardized database, extracts information required by the fault card library from the standardized database to generate corresponding parameters in the standardized fault card library, and supplements the fault information provided by a scheduling department and the parameters required by the rest fault cards to the standardized fault card library, thereby establishing the standardized fault card library with the information required by the fault cards of the PSD-BPA. According to the invention, the fault card is produced by establishing the database, so that a large amount of data processing work which is generated manually and easy to make mistakes at present is simplified, the correctness is ensured, support is provided for stable calculation of a user, and the working efficiency is greatly improved.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only one embodiment of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
FIG. 1 is a data schematic of a homopolar line N-1 fault card according to an embodiment of the present invention;
FIG. 2 is a data diagram of an N-1 fault card in a maintenance mode according to an embodiment of the present invention;
FIG. 3 is a data diagram of a cross-over fault card of an embodiment of the present invention;
FIG. 4 is a data diagram of a line single permanent single switch failure card according to an embodiment of the present invention;
FIG. 5 is a data diagram of a single permanent protection denial of service fault card according to an embodiment of the present invention;
FIG. 6 is a data schematic of a triple permanent protection denial of service fault card of an embodiment of the present invention;
FIG. 7 is a data schematic of a three permanent single switch fail card according to an embodiment of the present invention;
FIG. 8 is a data schematic of a three permanent switch fail card according to an embodiment of the present invention;
FIG. 9 is a data schematic of a plant stop all fault card according to an embodiment of the invention.
Detailed Description
The technical solutions in the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The method for establishing the fault card library based on the PSD-BPA comprises the following steps:
s1, establishing a standardized database in the excel table 1 according to parameters of the transformer substation, the line and the power plant provided by a dispatching department, and setting a modification mark, namely, the modification in the excel table 1 is marked, and the marked data can be deleted in batches.
The standardized database includes: the system comprises a line parameter table, a transformer substation parameter table and a power plant parameter table. Wherein, the circuit parameter list includes: the method comprises the following steps of (1) line Chinese name, corresponding node name, line voltage grade, circuit mark of parallel lines, line rated current, line resistance per unit value, line reactance per unit value, line to earth susceptance per unit value and line or segment length; the transformer substation parameter table comprises: the method comprises the following steps of (1) Chinese name of a transformer substation, name of a corresponding node, voltage grade of the transformer substation, loop marks of parallel lines, rated capacity of a transformer, number of parallel transformers, leakage reactance per unit value, equivalent resistance caused by copper loss, fixed taps of a node 1 and fixed taps of a node 2; the power plant parameter table includes: the Chinese name of the power plant station, the name of the corresponding node, the node voltage grade, the partition name, the maximum active power output, the actual active power output, the maximum reactive power output, the minimum reactive power output and the arranged voltage value or Vmax.
The existing mode annual operation mode calculation (including load flow calculation and transient stability calculation) does not have a standardized database, the mode annual operation mode calculation is modified on the basis of the previous mode data, and due to the fact that a power grid network frame is huge, different provinces of labor are needed to process the data in the mode calculation every year. In the processing process, whether the data is updated or not cannot be accurately marked due to the huge data amount and different processing personnel. After the standardized database is established, the table can be set by using a program, and the modified data is marked.
S2, establishing a standardized fault card library in an excel table 2 in a classified manner according to different requirements of fault cards in the power system, wherein the fault cards in the standardized fault card library comprise: the method comprises the steps of N-1 fault cards of the same-pole line, N-1 fault cards in an overhauling mode, cross-over fault cards, single-permanent-single-switch refusal fault cards of the line, single-permanent-protection refusal fault cards, three-permanent-single-switch refusal fault cards, three-permanent-three-switch refusal fault cards and power plant full-stop fault cards.
The fault card generation method in the power system at present is to add the fault card manually according to different fault calculation requirements, and calculate in a mode of a certain province one year and need to generate thousands of fault cards, so that the fault card generation efficiency is low easily, and the accuracy cannot be ensured.
S3, retrieving and extracting information required by the standardized fault card library from the standardized database of the excel table 1 of S1, importing the information into the standardized fault card library obtained in S2 to generate corresponding parameters, wherein the information required by the standardized fault card library is as follows:
s31, the fault card of the same-pole line N-1 (as shown in figure 1), the required information is: comment card (C card), fault card type (LS), node name on both sides of line (SHATA 50/LIUDO 50), line voltage class (525.), branch parallel code (e.g. the fifth column: 1/2 in FIG. 1), three-phase short circuit after node 1 side line switch (e.g. the sixth column: 1/-1 in FIG. 1), and fault occurrence time (cycle) (e.g. the last column: 10/15 in FIG. 1).
S32, an N-1 fault card (shown in figure 2) in a maintenance mode: comment card (NR _ FG card), fault card type (LS), node name on both sides of line (RUOHUA 50/GUILIN 52), line voltage level (525.), branch parallel code (e.g. column 6: 1/2 in FIG. 2), three-phase short circuit after node 1 side line switch (e.g. column 7: 1/-1 in FIG. 2) and fault occurrence time (cycle) (e.g. last: 10./15 in FIG. 2).
S33, cross-over fault card (as shown in fig. 3, top column is annotated row.): comment card (C card), fault card type (FLT), line two-side node name (PINBA 21/ZHENLI 21), line voltage class (230.), loop number (e.g., 6 th and 7 th columns: 1/2 in fig. 3), three-phase short-circuit fault (e.g., 5 th last column: 1 in fig. 3), fault side (e.g., 4 th last column: 1 in fig. 3), fault occurrence time (cycle) (e.g., 3 rd last column: 0 in fig. 3), time interval (cycle) from fault occurrence to disconnection of fault phase front side (e.g., 2 nd last column: 6 in fig. 3), and time interval (cycle) from fault occurrence to disconnection of fault phase rear side (e.g., 1 st last column: 6 in fig. 3).
S34, the circuit single-permanent-single switch refuses the fault card: comment cards (as shown in the first row of fig. 4: C cards), fault card types (as shown in column 1 of fig. 4: LS and FLT).
In the LS card (as shown in the second row of FIG. 4): node name (LAIBB 22/LAIB 21), node voltage (shown in columns 4 and 6: 230), parallel code (2), complex fault (9), fault time (cycle) (0.), single-phase short (first 1 of the second row in fig. 4), fault phase (second 1 of the second row in fig. 4), and short fault side (third 1 of the second row in fig. 4).
In the FLT card (shown in the third row of FIG. 4): the fault bus fault detection circuit comprises a fault bus name (LAIBB 22), a fault bus reference voltage (230), bus short-circuit fault tripping all outgoing lines (5), a short-circuit fault form (1), a fault occurrence time (cycle) (27.5), and a time interval (cycle) (0.5) from fault occurrence to disconnection of all outgoing lines.
S35, the single permanent protection refusal fault card (as shown in fig. 5, see the second row specifically): comment card (C card), fault card type (LS), node name on both sides of line (JIULO 22/CHONGK 22), line voltage class (230), parallel code (2), complex fault (9/-9/-1), fault time (cycle) (10./110.), single phase short (1), fault phase (penultimate column: 1 in FIG. 5), short fault side (penultimate column: 1 in FIG. 5).
S36, three-permanent-protection-refusal fault card (as shown in fig. 6, specifically in the second row): comment card (C card), fault card type (FLT), node name on both sides of line (JIULO 22/CHONGK 22), line voltage class (230), loop number (2), three-phase short-circuit fault (1), fault occurrence time (cycle) (10.), interval from fault occurrence to disconnection on the front side of fault phase (cycle) (penultimate column: 100.), and interval from fault occurrence to disconnection on the rear side of fault phase (cycle) (penultimate column: 100.).
S37, three permanent single switch failure card rejection (as shown in figure 7): comment card (C card), fault card type LS and FLT.
First fault card type FLT (fig. 7, two rows): the line two-side node name (JIULO 22/CHONGK 22), the line voltage class (230), the loop number (2), the three-phase short circuit single-phase rejection fault (4), the fault side (1), the fault occurrence time (cycle) (0.), the time interval (cycle) from the fault occurrence to the disconnection of the fault phase front side (one second row in FIG. 7: 6.), the time interval (cycle) from the fault occurrence to the disconnection of the fault phase rear side (second row in FIG. 7: 6.), and the time interval (cycle) from the fault occurrence to the final disconnection of the three phases (27.5).
Fault card type LS (third or fourth row of fig. 7): line side node names (JIULO 22/JIULO21/JIULO 23), line voltage class (230), parallel code (2), complex fault (9), fault time (cycle) (15.), three-phase open line (6), fault phase (first 1 in third or fourth row in fig. 7), short-circuit fault side (second 1 in third or fourth row in fig. 7).
Last fault card type FLT (last line of fig. 7): the bus short-circuit fault detection method comprises the following steps of line two-side node name (JIULO 22), line voltage class (230), bus short-circuit fault tripping all outgoing lines (5), short-circuit fault form (3), fault occurrence time (cycle) (27.5), and time interval (cycle) (0.5) from fault occurrence to fault phase front side disconnection.
S38, three permanent switch refusing to operate the fault card (as shown in figure 8):
first LS card (second row of FIG. 8): node names on two sides of the line (JIULO 22/CHONGK 22), line voltage level (230), branch parallel code (2), three-phase short circuit (1) after node 1 side line switch, and fault occurrence time (cycle) (0.).
Two middle fault card types LS (third and fourth rows of fig. 8): node names on both sides of the line (JIULO 22/JIULO21/JIULO 23), line voltage class (230), complex fault (9), fault time (cycle) (15.), three-phase open line (6), fault phase (first 1 in FIG. 8), short-circuit fault side (second 1 in FIG. 8).
Last fault card type FLT (as shown in the last row of fig. 8): the bus short-circuit fault detection method comprises the following steps of line two-side node name (JIULO 22), line voltage class (230), bus short-circuit fault tripping all outgoing lines (5), short-circuit fault form (3), fault occurrence time (cycle) (27.5), and time interval (cycle) (0.5) from fault occurrence to fault phase front side disconnection.
S39, power plant full stop fault card (as shown in FIG. 9): card type BQ: a modification code (D-delete), a plant name (LIUJING 1), a voltage class (22.0), a partition (GX), a constant active load (36.), a constant reactive load (18.0), a maximum active output (660.), an actual active output (300.), a maximum reactive output (320.), a minimum reactive output (-60.), a scheduled voltage value or Vmax (1.03/1.01).
Most data required by the fault card in the standardized database, however, fault time and fault interval time only need to be filled in batch according to experience, so that a complete fault card cannot be generated only by the standardized database, and therefore, the data is supplemented in S4 and S5.
And S4, filling the fault information (such as a line table crossed every year and a table of a same-pole line table) provided by the dispatching department into the standardized fault card library obtained in the S3, namely supplementing and perfecting the data of the standard data card library.
And S5, filling partial parameters (such as the time interval from the fault to the disconnection of the front side of the fault phase, the type of the short-circuit fault, the fault side and whether the fault phase, namely the three-phase is disconnected) in the standardized fault card library in batch according to the actual situation to S4 to obtain the standardized data card library with all information required by the fault database, thereby perfecting the standardized fault card library.
And S6, classifying the data in the standardized fault card library obtained in S5 according to different formats and parameter requirements of different fault cards, and automatically generating the fault cards in lsd.
In summary, the method for establishing the fault card library based on the PSD-BPA according to the present invention establishes the standardized fault card library by establishing the standardized database, extracts information required by the fault card library from the standardized database to generate corresponding parameters in the standardized fault card library, and supplements the fault information provided by the scheduling gate and the parameters required by the remaining fault cards to the standardized fault card library, thereby establishing the standardized fault card library having the information required by the fault cards of the PSD-BPA. The database generated fault card established according to the invention can effectively avoid the problems of complexity in manual generation, low efficiency of the fault card and incapability of ensuring accuracy.
The above disclosure is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of changes or modifications within the technical scope of the present invention, and shall be covered by the scope of the present invention.
Claims (5)
1. A fault card library establishing method based on PSD-BPA is characterized in that: the method comprises the following steps:
s1, establishing a standardized database in an excel table 1 according to parameters of the transformer substation, the line and the power plant provided by a dispatching department, and setting a modification mark;
the setting modification marks are marked as modifications in excel table 1, and the marked data can be deleted in batches;
s2, establishing a standardized fault card library in an excel table 2 in a classified manner according to different requirements of fault cards in the power system;
s3, extracting information required by the standardized fault card library from the standardized database of the excel table 1 of S1, and importing the information into the standardized fault card library obtained in S2 to generate corresponding parameters;
the information required by the standardized fault card library includes: the fault card of the same pole line N-1, the fault card of the N-1 in the maintenance mode, the fault card of the cross spanning, the fault card of the single permanent magnet single switch refusal of the line, the fault card of the single permanent magnet protection refusal, the fault card of the three permanent magnet single switch refusal, the fault card of the three permanent magnet three switches refusal and the fault card of the power plant full stop;
s4, filling the fault information provided by the dispatching department into the standardized fault card library obtained in the S3;
s5, filling partial parameters in the standardized fault card library into the standardized data card library which is obtained in S4 and has all information required by the fault database in batch according to actual conditions;
part of parameters in the standardized fault card library comprise: the method comprises the following steps of time interval from fault occurrence to disconnection of the front side of a fault phase, short-circuit fault type, the fault side and the fault phase, wherein the fault phase is used for judging whether three phases are disconnected or not.
2. The method for establishing the PSD-BPA-based fault card library according to claim 1, wherein the method comprises the following steps: the standardized database includes: the system comprises a line parameter table, a transformer substation parameter table and a power plant parameter table.
3. The method for establishing the PSD-BPA-based fault card library according to claim 2, wherein the method comprises the following steps:
the line parameter table includes: the method comprises the following steps of (1) line Chinese name, corresponding node name, line voltage grade, circuit mark of parallel lines, line rated current, line resistance per unit value, line reactance per unit value, line to earth susceptance per unit value and line or segment length;
the transformer substation parameter table comprises: the method comprises the following steps of (1) Chinese name of a transformer substation, name of a corresponding node, voltage grade of the transformer substation, loop marks of parallel lines, rated capacity of a transformer, number of parallel transformers, leakage reactance per unit value, equivalent resistance caused by copper loss, fixed taps of a node 1 and fixed taps of a node 2;
the power plant parameter table includes: the power plant station Chinese name, the corresponding node name, the node voltage grade, the partition name, the maximum active power output, the actual active power output, the maximum reactive power output, the minimum reactive power output and the arranged voltage value or the maximum voltage value.
4. The method for establishing the PSD-BPA-based fault card library according to claim 1, wherein the method comprises the following steps: the fault cards in the standardized fault card library include: the method comprises the steps of N-1 fault cards of the same-pole line, N-1 fault cards in an overhauling mode, cross-over fault cards, single-permanent-single-switch refusal fault cards of the line, single-permanent-protection refusal fault cards, three-permanent-single-switch refusal fault cards, three-permanent-three-switch refusal fault cards and power plant full-stop fault cards.
5. The method for establishing the PSD-BPA-based fault card library according to claim 1, wherein the method comprises the following steps: further comprising: and S6, classifying the data in the standardized fault card library obtained in S5 according to different formats and parameter requirements of different fault cards, and automatically generating the fault cards in lsd.
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| 基于PSD-BPA的电网潮流稳定计算分析平台开发与应用;罗彬 等;《电力系统自动化》;20120910;第36卷(第17期);第119-123页 * |
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