CN107577856B

CN107577856B - PSASP-based transient stability job processing optimization method

Info

Publication number: CN107577856B
Application number: CN201710741788.5A
Authority: CN
Inventors: 杨帆; 余晓; 丁雪菲; 高兵
Original assignee: Chongqing University
Current assignee: Chongqing University
Priority date: 2017-08-25
Filing date: 2017-08-25
Publication date: 2021-02-02
Anticipated expiration: 2037-08-25
Also published as: CN107577856A

Abstract

The invention discloses a PSASP-based transient stability job processing optimization method, which is used for carrying out batch processing by setting a starting point, an end point and an interval by a user when the transient stability simulation processing node is used for carrying out switching and tangent line jobs in disturbance. The method provided by the invention can realize batch processing of transient stability operation, avoid manpower consumption caused by original single operation processing, improve the working efficiency of the staff of the electric power system, and further realize the purpose of accurately and efficiently simulating the transient stability of a large-scale electric power system.

Description

PSASP-based transient stability job processing optimization method

Technical Field

The invention relates to the field of power system simulation software, in particular to a transient stability job processing optimization method based on PSASP.

Background

The simulation software plays an important role in the aspects of planning, design, operation, fault analysis, research and the like of the electric power system in China, and the PSASP software is widely applied to the national electric power system group such as the electric academy in recent years. However, the transient stability simulation in the PSASP requires manual modification of each data of the disturbance fault work, and the mechanical and repetitive work greatly reduces the work efficiency.

At present, the patents provided by the national PSASP simulation software include a PSASP-based electric energy quality analysis and calculation method of a Henan electric power test research institute, an automatic conversion method for converting a PSASP data model into a PSCAD data model of an electric power science research institute of electric power companies in Chongqing city of China, and the like, but the invention does not relate to a batch processing method for PSASP transient stability operation.

Therefore, for the purpose of improving work efficiency and reducing manpower consumption, an optimization method for the PSASP is needed, so that a user can perform batch processing on a job during transient stability simulation.

Disclosure of Invention

The invention aims to provide a PSASP-based transient stability job processing optimization method, which realizes batch processing of transient stability jobs in PSASP, improves the working efficiency and realizes the purpose of accurately and efficiently simulating the transient stability of a large-scale power system.

In order to achieve the purpose, the invention adopts the following technical scheme: a transient stability job processing optimization method based on PSASP is characterized by comprising the following steps:

1) selecting transient stability operation to be processed in batch;

2) judging the type of the transient stability operation, and reading all data tables corresponding to the operation according to the type;

3) and modifying the corresponding data bits in the corresponding data table in batches according to the preset starting point, the preset end point and the preset interval, so as to realize batch processing of the transient stability operation.

Further, the method for judging the type of the transient stability job is to select a st _ dist _ t table read job according to the value of the type field in the st _ dist _ inf table.

Further, the reading of all data tables corresponding to the job according to the type includes going to the data table st _ dist _ t5 if the job is a switch-off job, and going to the data table st _ dist _ t7 if the job is a tangent-line job.

Due to the adoption of the technical scheme, the invention has the following advantages:

1. and directly modifying corresponding data bits in the corresponding data table of the background to achieve the purpose of batch processing. The transient stability operation in the PSASP software can be processed in batch, and the working efficiency is improved.

2. The method for directly finding out and modifying the numerical value of the corresponding field in the data table is based on the essential principle of PSASP software and is obtained by reverse thinking, and has the advantages of reliability and strong recording property.

3. The method has the advantage of humanization, and the user sets the starting point, the end point and the interval of the fault according to specific requirements.

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 objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof.

Drawings

FIG. 1 is a flowchart of the process of the present invention;

FIG. 2 is a schematic diagram of a transient stabilization operation;

FIG. 3 is a graph of transient stability job membership.

Detailed Description

The invention is further illustrated by the following figures and examples.

Fig. 1 is a flowchart of a transient stability processing optimization method based on a PSASP according to the present invention, which includes the following steps:

the method comprises the following steps: selecting transient stability operation to be processed in batch by a user;

step two: reading a data table of transient stability operation to be processed, judging the type of the transient stability operation, and proceeding to the corresponding data table for batch processing;

step three: if the operation is a cutting operation, the data goes to a data table st _ dist _ t5, and if the operation is a cutting operation, the data goes to a data table st _ dist _ t 7;

step four: according to the type of the job to be processed selected by a user, generating K _ ratio in batches in a corresponding data table, namely the position of a cutting point in a cutting machine or a line cutting job, wherein the value range of the K _ ratio is 0 to 1;

step five: and updating the data table and copying to generate other data tables.

The method for judging the job type in the second step is to select the st _ dist _ t table to read the job according to the value of the type field in the st _ dist _ inf table.

The mode of batch generation of the K _ ratio in the fourth step is that a starting point, an end point and an interval are set by a user, and then the K _ ratio is added with an interval value once to generate a new K _ ratio from the starting point value through simple programming until the end point value is reached, so that the task of batch generation of the K _ ratio is completed. Wherein the spacing is typically 0.1 or 0.05.

The data table in the step five is one or more of st _ case, st _ fault, st _ dist _ inf, st _ dist _ t5, st _ dist _ t6, and st _ dist _ t 7.

FIG. 2 is a diagram of the composition of transient stability jobs, which are defined by PSASP and composed of power flow information and transient stability control information data;

transient stability comprises two types of operation of network faults and node disturbance, wherein the network faults comprise single-phase grounding, single-phase disconnection, three-phase grounding and disconnection, and fault positions and fault point positions need to be set when the operation is defined;

the node disturbance fault mainly comprises disturbance types such as impact load, rapid adjustment, cutter cutting load and the like. Node disturbance faults and tripping and load shedding among them often require manually adjusted disturbance variables in the research.

FIG. 3 is a graph of transient-stable job membership, with a data table st _ case containing all transient jobs;

a ctrl _ fault field in the st _ case indicates whether the operation belongs to a network fault, and if so, the ctrl _ fault field corresponds to a data table st _ fault;

a ctrl _ dist field in st _ case indicates whether the job belongs to a disturbance fault, and if so, the ctrl _ dist _ inf field corresponds to a data table st _ dist _ inf;

the type field in st _ dist _ inf indicates the type of disturbance for the disturbance job, the cutter job corresponds to data table st _ dist _ t5, the load-shedding job corresponds to data table st _ dist _ t6, and the tangent line job corresponds to data table st _ dist _ t 7.

Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered in the claims of the present invention.

Claims

1. A transient stability job processing optimization method based on PSASP is characterized by comprising the following steps:

1) selecting transient stability operation to be processed in batch;

2) judging the type of the transient stability operation, and reading all data tables corresponding to the operation according to the type; according to the type of the job to be processed selected by a user, generating K _ ratio in batches in a corresponding data table, namely the cutting-off point position in the cutting machine or the tangent line job, wherein the mode of generating the K _ ratio in batches is that the user sets a starting point, an end point and an interval, and then, starting from the starting point value, adding an interval value once to generate a new K _ ratio until the end point value is reached, wherein the interval is 0.1 or 0.05;

2. The PSASP-based transient-stable job processing optimization method of claim 1, wherein: the method for judging the type of the transient stability job is to select a st _ dist _ t table read job according to the value of the type field in the st _ dist _ inf table.

3. The PSASP-based transient-stable job processing optimization method of claim 1 or 2, wherein: the reading of all data tables corresponding to the operation according to the type includes going to the data table st _ dist _ t5 if the operation is a cutting operation, and going to the data table st _ dist _ t7 if the operation is a cutting operation.