CN111638413A - Intelligent substation fault waveform playback analysis system and method - Google Patents
Intelligent substation fault waveform playback analysis system and method Download PDFInfo
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- CN111638413A CN111638413A CN202010490619.0A CN202010490619A CN111638413A CN 111638413 A CN111638413 A CN 111638413A CN 202010490619 A CN202010490619 A CN 202010490619A CN 111638413 A CN111638413 A CN 111638413A
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- 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
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Abstract
The invention discloses a fault waveform playback analysis system and a fault waveform playback analysis method for an intelligent substation, wherein an application service module imports a fault waveform file through an external data interface, stores the imported fault waveform file in a storage service module, analyzes the fault waveform file to extract configuration information of the fault waveform file, creates a fault waveform set, stores the fault waveform set in the storage service module, creates a fault waveform test table by the application service module, stores the fault waveform test table in the storage service module, and simultaneously sends the fault waveform file corresponding to each test point in the fault waveform test table to a playback service module; the playback service module plays back the fault waveform file corresponding to each test point in the fault waveform test table and collects response data, and then sends out the collected response data.
Description
Technical Field
The invention belongs to the field of relay protection tests of intelligent substations, and relates to a fault waveform playback analysis system and method of an intelligent substation.
Background
The analysis of the complex fault of the power system is carried out in a moving-die laboratory, and the dynamic simulation fault process is tested by establishing a system model once, so that the modeling is complex, the requirement on personnel quality is high, the parameter adjustment is difficult, and the laboratory investment is huge.
At the present stage, the playback software is carried by a relay protection tester, the test process of the tester is played back, and a fault recording file cannot be utilized; in addition, the multi-interval output test of the transformer substation cannot be realized due to the limited hardware interface.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a system and a method for analyzing the fault waveform playback of an intelligent substation, and the system and the method can utilize a fault recording file to realize the playback of the test process of a tester.
In order to achieve the purpose, the intelligent substation fault waveform playback analysis system is characterized by comprising an application service module, a storage service module and a playback service module;
the application service module imports the fault waveform file through an external data interface, then stores the imported fault waveform file in the storage service module, simultaneously, the fault waveform file is analyzed to extract the configuration information of the fault waveform file, then creating a set of fault waveforms, and storing the set of fault waveforms in a storage service module, wherein, the fault waveform files with the same configuration information are stored in the same fault waveform set, in addition, the application service module creates a fault waveform test table and stores the fault waveform test table in the storage service module, wherein, the fault waveform test table comprises a plurality of test points, each test point corresponds to a fault waveform file in a fault waveform set, one fault waveform file represents a fault waveform playback analysis test, simultaneously, sending the fault waveform files corresponding to the test points in the fault waveform test table to a playback service module;
and the playback service module plays back the fault waveform file corresponding to each test point in the fault waveform test table and collects response data, and then sends out the collected response data.
The external data interface comprises a USB interface and a network interface.
The configuration information of the fault waveform file comprises a fault wave recording cfg voltage channel, a fault wave recording cfg current channel and a switching value channel.
The configuration information of the playback service module comprises a voltage analog output channel, a current analog output channel, SV control block parameters, GOOSE control block parameters, a hard contact open-in channel, a hard contact open-out channel and an optical fiber Ethernet port.
The application service module edits configuration information of the fault waveform set to adjust mapping between a fault recording cfg voltage channel and a voltage analog quantity output channel, mapping between a fault recording cfg current channel and a current analog quantity output channel, mapping between a fault recording cfg voltage channel and a current channel and an SV channel, mapping between a switching value channel and a hard contact input channel and a hard contact output channel, and mapping between a switching value channel and a GOOSE channel in the configuration information of the fault waveform file.
The playback service module comprises a playback process control module, a response information acquisition module and an input/output interface module, wherein the analysis of the fault waveform file and the control of the input/output interface module are realized through the playback process control module; acquiring the hard contact switching value and GOOSE switching value displacement information responded by the tested device through a response information acquisition module; and inputting the fault waveform file and outputting the hard contact switching value and GOOSE switching value displacement information responded by the tested device through the input/output interface module.
The intelligent substation fault waveform playback analysis method comprises the following steps:
the application service module transmits the configuration information of the fault waveform file and the fault waveform set corresponding to each test point to the playback service module;
the playback service module analyzes the fault waveform file, extracts sampling values and time marks of a voltage channel, a current channel and a switching value channel in configuration information of the fault waveform file, and calculates output values and output time corresponding to each sampling point according to the configuration information of the fault waveform data set;
the playback service module converts the output value corresponding to the sampling point into an analog quantity, an SV message and a GOOSE message, outputs the analog quantity, the SV message and the GOOSE message, identifies the switching value displacement moment in the fault waveform file during outputting, and returns the switching value displacement moment to the application service module in real time to serve as the reference moment of test evaluation;
the playback service module collects response data of the tested device and transmits the response data back to the application service module in real time to serve as the measurement time of test evaluation;
and the playback service module calculates the time error as the measuring time-reference time, if the time error is smaller than the error limit value, the analysis result is correct, and if not, the analysis result is wrong.
The invention has the following beneficial effects:
the invention relates to a fault waveform playback analysis system and a fault waveform playback analysis method for an intelligent substation, which are used for the intelligent substation, wherein during specific operation, a fault recording file (COMTRADE or PACP format) recorded when a power system fails is mapped and associated with a substation configuration file (SCD), analog quantity and switching quantity generated when the fault is recorded in the fault recording file are converted into SV sampling messages and GOOSE messages, and through FPGA module expansion and multi-machine optical B code synchronization technology, infinite channel expansion of the analog quantity, the switching quantity and the SV and GOOSE messages is realized in a synchronization mode, so that the test requirements of secondary protection systems of different types and multiple intervals are met, faults are reproduced in a small power system dynamic model laboratory, and the action sequence and correctness of each relay protection device during fault analysis are facilitated.
Drawings
FIG. 1 is a software architecture diagram of an intelligent substation fault waveform playback analysis system;
FIG. 2 is a schematic diagram of a storage and indexing service.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
referring to fig. 1, the intelligent substation fault waveform playback analysis system according to the present invention includes an application service module, a storage service module, and a playback service module;
the application service module imports a fault waveform file through an external data interface, stores the imported fault waveform file in a storage service module, analyzes the fault waveform file to extract configuration information of the fault waveform file, then creates a fault waveform set, and stores the fault waveform set in the storage service module, wherein the fault waveform files with the same configuration information are stored in the same fault waveform set, in addition, the application service module creates a fault waveform test table, and stores the fault waveform test table in the storage service module, wherein the fault waveform test table comprises a plurality of test points, each test point corresponds to one fault waveform file in the fault waveform set, one fault waveform file represents one fault waveform analysis test, namely, indexes of a plurality of fault waveform files are stored in each fault waveform test table, the device is used for automatically and continuously replaying the fault waveform files in a primary test process and simultaneously sending the fault waveform files corresponding to the test points in the fault waveform test table to a replay service module;
the playback service module plays back a fault waveform file corresponding to each test point in the fault waveform test table and acquires response data, and then sends the acquired response data out, specifically, the playback service module comprises a playback process control module, a response information acquisition module and an input/output interface module, wherein the playback process control module is used for realizing the analysis of the fault waveform file and the control of the input/output interface module so as to obtain sampling values and time scales of a voltage channel, a current channel and a switching value channel; acquiring the hard contact switching value and GOOSE switching value displacement information responded by the tested device through a response information acquisition module; inputting a fault waveform file and outputting hard contact switching value and GOOSE switching value displacement information responded by a tested device through an input/output interface module, namely converting a sampling value into analog quantity, SV (sampling value) messages and GOOSE (generic object oriented substation event) messages according to configuration information of a fault waveform set and outputting the analog quantity, SV messages and GOOSE messages; and acquiring response data of the tested device, including hard contact input and GOOSE message input, and identifying the mapped open input displacement and the displacement moment thereof.
The external data interface comprises a USB interface and a network interface.
The configuration information of the fault waveform file comprises a fault recording cfg voltage channel, a cfg current channel and a switching value channel.
The configuration information of the playback service module includes a voltage analog output channel (small voltage signal for the integrated substation), a current analog output channel (small voltage signal for the integrated substation), SV control block parameters (SV messages for the intelligent substation), GOOSE control block parameters (GOOSE messages for the intelligent substation), a hard-wired access channel (for the integrated substation), and a optical fiber ethernet port (general).
The application service module edits configuration information of a fault waveform set to adjust mapping between a voltage channel and a voltage analog quantity output channel (a small voltage signal of a corresponding channel is used for an integrated substation), mapping between a current channel and a current analog quantity output channel (a small voltage signal of the corresponding channel is used for the integrated substation), mapping between the voltage channel and the current channel and an SV channel (each analog quantity corresponding to an SV message is used for an intelligent substation), mapping between a switching value channel and a hard contact switch-in channel and a hard contact switch-out channel (used for the integrated substation), and mapping between the switching value channel and a GOOSE channel (each corresponding switch quantity in the GOOSE message is used for the intelligent substation) in the configuration information of the fault waveform file.
Referring to fig. 2, the storage service module is configured to store a fault waveform file, a fault waveform set, and a fault waveform test table, and a schematic storage structure diagram of the storage service module is shown in fig. 2, where waveform files 1 to 8 are fault waveform files, waveform files 1 to 6 have the same configuration information, and waveform files 7 and 8 have the same configuration information; the waveform sets 1-3 are fault waveform sets, the waveform set 1 comprises waveform files 1-4, the waveform set 2 comprises waveform files 3-6, and the waveform set 3 comprises waveform files 7 and 8; the fault waveform test table contains 4 indices pointing to waveform files 1, 3 of waveform set 1, waveform files 3, 6 of waveform set 2, and waveform file 8 of waveform set 3, respectively, where waveform file 3 is referenced 2 times.
In addition, the invention also comprises a user service module, which realizes the man-machine interaction function and realizes the following display and operation functions: selecting a fault waveform file to display configuration information of the fault waveform configuration file, performing channel mapping, editing a fault waveform data set, editing a fault waveform test list, displaying real-time progress and input amount in a playback process and displaying test evaluation results.
The specific working process of the invention is as follows:
the application service module transmits the configuration information of the fault waveform file and the fault waveform set corresponding to each test point to the playback service module;
the playback service module analyzes the fault waveform file, extracts sampling values and time marks of a voltage channel, a current channel and a switching value channel in configuration information of the fault waveform file, and calculates output values and output time corresponding to each sampling point according to the configuration information of the fault waveform data set;
the playback service module converts the output value into an analog quantity, an SV message and a GOOSE message and then outputs the analog quantity, the SV message and the GOOSE message, and the output and the switching value displacement moment in the fault waveform file are identified and transmitted back to the application service module in real time to serve as a reference moment of test evaluation;
the playback service module collects response data of the tested device and transmits the response data back to the application service module in real time to serve as the measurement time of test evaluation;
and the playback service module calculates the time error as the measuring time-reference time, if the time error is smaller than the error limit value, the evaluation result is correct, and if not, the evaluation result is wrong.
When the device is used for the integrated transformer substation, a fault recording file (COMTRADE format) cfg channel recorded when a power system fails is mapped and associated with a small voltage output channel, and analog quantity and switching quantity which are recorded when the power system fails are converted into small voltage output and electric switching quantity, wherein the small voltage output can be connected to an external extensible power amplification device to convert signals into secondary current and secondary voltage, so that the testing requirement of a multi-interval secondary protection system is met.
The invention also provides a graphic editing function of the fault recording file, which cuts and expands the waveform according to time periods under a graphic interface; direct current, fundamental wave and harmonic component can be superposed according to time period, and phase, size and attenuation period are set; the waveform is changed immediately after editing and is obtained visually.
Claims (7)
1. An intelligent substation fault waveform playback analysis system is characterized by comprising an application service module, a storage service module and a playback service module;
the application service module imports the fault waveform file through an external data interface, then stores the imported fault waveform file in the storage service module, simultaneously, the fault waveform file is analyzed to extract the configuration information of the fault waveform file, then creating a set of fault waveforms, and storing the set of fault waveforms in a storage service module, wherein, the fault waveform files with the same configuration information are stored in the same fault waveform set, in addition, the application service module creates a fault waveform test table and stores the fault waveform test table in the storage service module, wherein, the fault waveform test table comprises a plurality of test points, each test point corresponds to a fault waveform file in a fault waveform set, one fault waveform file represents a fault waveform playback analysis test, simultaneously, sending the fault waveform files corresponding to the test points in the fault waveform test table to a playback service module;
and the playback service module plays back the fault waveform file corresponding to each test point in the fault waveform test table and collects response data, and then sends out the collected response data.
2. The intelligent substation fault waveform playback analysis system of claim 1, wherein the external data interface comprises a USB interface and a network interface.
3. The intelligent substation fault waveform playback analysis system of claim 1, wherein the configuration information of the fault waveform file comprises a fault recording cfg voltage channel, a fault recording cfg current channel and a switching value channel.
4. The intelligent substation fault waveform playback analysis system of claim 1, wherein the configuration information of the playback service module comprises a voltage analog output channel, a current analog output channel, SV control block parameters, GOOSE control block parameters, a hard-point open channel, and a fiber ethernet port.
5. The intelligent substation fault waveform playback analysis system of claim 1, wherein the application service module edits the configuration information of the fault waveform set to adjust mapping between a fault recording cfg voltage channel and a voltage analog output channel, mapping between a fault recording cfg current channel and a current analog output channel, mapping between a fault recording cfg voltage channel and a current channel and an SV channel, mapping between a switching value channel and a hard contact open-in channel and a hard contact open-out channel, and mapping between a switching value channel and a GOOSE channel in the configuration information of the fault waveform file.
6. The intelligent substation fault waveform playback analysis system of claim 1, wherein the playback service module comprises a playback process control module, a response information acquisition module and an input/output interface module, wherein the analysis of the fault waveform file and the control of the input/output interface module are realized by the playback process control module; acquiring the hard contact switching value and GOOSE switching value displacement information responded by the tested device through a response information acquisition module; and inputting the fault waveform file and outputting the hard contact switching value and GOOSE switching value displacement information responded by the tested device through the input/output interface module.
7. An intelligent substation fault waveform playback analysis method is characterized in that the intelligent substation fault waveform playback analysis method based on any one of claims 1 to 6 comprises the following steps:
the application service module transmits the configuration information of the fault waveform file and the fault waveform set corresponding to each test point to the playback service module;
the playback service module analyzes the fault waveform file, extracts sampling values and time marks of a voltage channel, a current channel and a switching value channel in configuration information of the fault waveform file, and calculates output values and output time corresponding to each sampling point according to the configuration information of the fault waveform data set;
the playback service module converts the output value corresponding to the sampling point into an analog quantity, an SV message and a GOOSE message, outputs the analog quantity, the SV message and the GOOSE message, identifies the switching value displacement moment in the fault waveform file during outputting, and returns the switching value displacement moment to the application service module in real time to serve as the reference moment of test evaluation;
the playback service module collects response data of the tested device and transmits the response data back to the application service module in real time to serve as the measurement time of test evaluation;
and the playback service module calculates the time error as the measuring time-reference time, if the time error is smaller than the error limit value, the analysis result is correct, and if not, the analysis result is wrong.
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Application publication date: 20200908 |