CN112491811A

CN112491811A - SV-GSE automatic transmutation method and system for process layer of relay protection device

Info

Publication number: CN112491811A
Application number: CN202011245585.5A
Authority: CN
Inventors: 陈超; 秦昌嵩; 丁毅; 张尧
Original assignee: Nanjing SAC Automation Co Ltd
Current assignee: Nanjing SAC Automation Co Ltd
Priority date: 2020-11-10
Filing date: 2020-11-10
Publication date: 2021-03-12
Anticipated expiration: 2040-11-10
Also published as: CN112491811B

Abstract

The invention relates to a method and a system for SV-GSE automatic transmutation at a process layer of a relay protection device, wherein transmitted SV data can simulate various voltage and current anomalies by setting the initial value, the stepping interval and the final value of voltage and current; by setting the value, sending time, stNum and sqNum of each point of the GOOSE sequence, various field signals and GOOSE abnormal conditions can be simulated.

Description

SV-GSE automatic transmutation method and system for process layer of relay protection device

Technical Field

The invention belongs to the technical field of power system equipment and devices, relates to an SV-GSE automatic grading method for a process layer of a relay protection device, and further relates to an SV-GSE automatic grading system for the process layer of the relay protection device.

Background

In the relay protection equipment of the traditional transformer substation, a secondary circuit connected by a cable is mainly adopted. Whereas in intelligent substations the secondary cables are gradually replaced by optical fibres. The secondary circuit testing work which can be finished by using a multimeter in the past can not meet the requirements of a digital intelligent station at present.

In the intelligent station, the data of the secondary equipment is mainly input in SV and GOOSE formats. Therefore, the test of the SV secondary circuit and the GOOSE signal becomes the key content in the development, verification and deployment process of the secondary equipment. At present, an embedded relay protection tester based on an FPGA is mainly used for applying measurement excitation, and the testing method is high in cost and inconvenient to carry.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, and provides an SV-GSE automatic transmutation method for a process layer of a relay protection device, which is used for generating SV messages capable of simulating various voltage and current abnormalities and GOOSE messages capable of simulating various abnormal conditions of voltage and current.

In order to solve the technical problem, the invention provides an SV-GSE automatic transmutation method for a process layer of a relay protection device, which comprises the following steps:

configuring SV basic configuration information;

configuring SV gradient information, comprising: the variation, the step-by-step time interval, the step-by-step length of the channel, the starting value and the ending value;

obtaining the changed voltage or current according to SV gradient information, and generating a standard SV message by combining with SV basic configuration information;

configuring basic configuration information of GOOSE;

configuring GOOSE sequence information, comprising: sequence nodes, time intervals, data values in each node GOOSE block;

and generating a standard GOOSE message according to the basic configuration information and the sequence information of the GOOSE.

Further, the SV basic configuration information includes: the system comprises a source MAC address, a target MAC address, a sampling message identifier SmvID, a configuration version number ConfRev, an application identifier AppID, Priority, a virtual local area network name VLaniD, a secondary voltage rated value secondVol, a primary voltage rated value firstVol, a secondary current rated value secondCurrent, a primary current rated value firstCurrent and a sampling rate SampleRate.

Further, the variation includes amplitude, phase angle and frequency.

Further, the SV gradient information further includes: and if the variable quantity is automatically changed, outputting a stable sine wave, and if the variable quantity is automatically changed, outputting a waveform which is changed according to a set change rule.

Further, the obtaining of the varying voltage or current according to the SV gradient information includes:

taking the current channel Ia as an example, when the automatic gradual change is selected, the specific calculation process is as follows:

reading the configuration information to obtain that the channel type is a current channel Ia, the amplitude rms is 1.0 ampere, the phase angle phase is 0 degree, and the CT transformation ratio is 1200.0A of a primary rated value divided by 1.0A of a secondary rated value, namely 1200;

through reading configuration, the frequency freq is 50.0Hz, the number of sampling points per second is 4000, and the number of sampling points required by one cycle current can be calculated by dividing 4000 by 50Hz, namely 80;

reading the gradient configuration to obtain that the step length is 0.1A, the initial value is 1.414A, and the time length of each step is 1 second;

the first 1 second will send 50 cycles of Ia current data, 80 points per cycle; the value V1i = 1.414 CT sin (2 PI i/80 phase PI/180)) at point i, where PI is the circumferential rate constant 3.1415927, and i takes from 1 to 80;

after the V1i data are continuously sent for 1 second, the current amplitude is 1.514A after the initial value is 1.414 and the step size is 0.1; the 2 nd second transmission data V2i is calculated by the formula: v2i = 1.514 × CT × sin (2 × PI i/80-phase × PI/180));

when the time reaches 3 seconds, accumulating the current amplitude value by 0.1, wherein the current amplitude value is 1.614A, and recalculating the sending data; repeating the steps in sequence until the accumulated value reaches the final value set in a gradient way;

and after the final value of the gradient setting is reached, determining the finally output data after the experiment according to whether the gradient setting returns to the initial value or the final value.

Further, the GOOSE basic configuration information includes: a source MAC address, a destination MAC address, a control block tag GoID, a control block reference name GocbRef, a data set reference name DatSet, a transmission Time, an allowed Time to live Tal, a configuration version ConfRev, an application identifier AppID, a virtual local area network name VLanID, a Priority, a shift counter StNum, a sequence counter SqNum, a Test identifier Test, and a feeds command identifier ndsCom.

Correspondingly, the invention also provides an SV-GSE automatic grading system of a relay protection device process layer, which comprises the following steps:

the SV basic configuration module is used for configuring SV basic configuration information;

an SV transmutation configuration module, configured to configure SV transmutation information, comprising: the variation, the step-by-step time interval, the step-by-step length of the channel, the starting value and the ending value;

the SV message generating module is used for acquiring changed voltage or current according to SV gradient information and generating a standard SV message by combining with SV basic configuration information;

the GOOSE basic configuration module is used for configuring basic configuration information of the GOOSE;

a GOOSE sequence configuration module, configured to configure GOOSE sequence information, including: sequence nodes, time intervals, data values in each node GOOSE block;

and the GOOSE message generation module is used for generating a standard GOOSE message according to the GOOSE basic configuration information and the sequence information.

Compared with the prior art, the invention has the following beneficial effects: the invention sets the initial value, the stepping interval and the final value of the voltage and the current, so that the transmitted SV data can simulate various voltage and current anomalies. By setting the value, sending time, stNum and sqNum of each point of the GOOSE sequence, various field signals and GOOSE abnormal conditions can be simulated.

Drawings

FIG. 1 is a schematic flow diagram of SV automatic tapered message transmission;

FIG. 2 is a schematic flow chart of GOOSE automatic tapered message transmission;

FIG. 3 is an SV base configuration interface;

FIG. 4 is an SV gradient configuration interface;

FIG. 5 is a GOOSE basic configuration interface;

fig. 6 is GOOSE sequence configuration interface.

Detailed Description

The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

The invention has the following inventive concept: and simulating various common power system fault voltages and currents through SV gradient configuration, and outputting SV messages to apply excitation to the protection equipment. And editing various GOOSE abnormal messages by using GOOSE sequence configuration, thereby completing the functional verification of the secondary equipment.

The SV-GSE automatic transmutation method for the process layer of the relay protection device disclosed by the invention is shown in figure 1 and comprises the following processes:

the SV automatic tapered message sending process, as shown in fig. 1, includes the following steps 1-4, which are described in detail below.

Step 1) configuring SV basic configuration information, which comprises a source MAC address, a destination MAC address, a sampling message identifier SmvID, a configuration version number ConfRev, an application identifier AppID, a Priority, a virtual local area network name VLaniD, a secondary voltage rated value secondVol, a primary voltage rated value firstVol, a secondary current rated value secondCurrent, a primary current rated value firstCurrent and a sampling rate SampleRate.

SV refers to sampling value data based on IEC61850-9-2 format. The sampling value message frame format comprises source and destination MAC addresses, a virtual local area network name VLANID, Priority, a configuration version number ConfRev, a sampling message identifier SmvID, an application identifier AppID, a data set datSet, a sampling time of data, a sampling synchronization mark smpSynch and a sampling rate smpRate.

The primary and secondary rated voltages and currents are used to restore the actual voltage and current at the site when SV is transmitted or received. The field voltage and current are re-sampled by the PT/CT sensor.

The basic information required for the above SV messages may be imported from a CCD file or manually entered. These configuration information uniquely identify an SV sample data set. The CCD file is a standard file of the power system device, from which SV, GOOSE basic configuration information can be acquired.

Referring to fig. 3, the SV basic configuration information is configured to include that the source MAC address (simulating the physical address of the SV message to be sent) is 00-00-01-01-20-01, the destination MAC address (simulating or the address of the device receiving SV data under test) is 01-0C-CD-01-20-01, the smvdid is smvcb01, ConfRev is 1, the AppID is 0x4001, the Priority is 0, the vlan id is 1, and the sampling rate is 4000.

Step 2) SV gradient information is configured, comprising:

variation amount: including amplitude, phase angle and frequency; the change amount can only be selected one, that is, the change in SV message is the amplitude, phase angle or frequency of the voltage and current;

whether to change automatically: if the selection is not automatically changed, a stable sine wave is output, and if the selection is automatically changed, the output waveform is changed according to the set change rule. After the automatic change of the check, whether the initial value is returned after the change is finished is selected (after an experiment is finished, the final value or the initial value can be selected to be output);

setting an experiment interval: if only one experiment is carried out, the experiment interval is filled for 0 second, and if multiple experiments are carried out, the proper experiment interval is filled;

configuring a step-by-step time interval;

the step size, start value and end value of the channel (each voltage or current) are configured.

Referring to fig. 4, SV gradient information is configured, and finally: selecting the variation as the amplitude, checking the automatic variation, returning to the initial value after the selection is finished, setting a 0-second experiment interval to represent only one experiment, configuring the step time interval of the gradual variation as 100ms, and configuring the channels to include a delay channel delay, n current channels Ia and Ib, n.

And 3) storing SV basic configuration information and gradient information.

The SV configuration information is stored according to the following fields: secondary voltage rating secondVol, primary voltage rating firstVol, step duration stepTime, value type valType (in fixed delay, voltage, current), secondary current rating secondCurrent, primary current rating firstCurrent, sampling rate SampleRate, tapered type chgType (in no taper, from start to end and back to start), destination MAC address DstMac, source MAC address SrcMac, voltage current frequency freq (used to calculate the value of the sampling point), data set name DataSet (referring to the data set of each channel current voltage), whether to synchronize flag Sync, experimental interval loopTime for multiple experiments (0 means only one experiment), ID flag SMV, Priority, AppID application flag, lanzid virtual local area network name, configuration version confRev.

The tapered information is recorded in units of channels, and is invalid when the channel type is a fixed-delay channel. The detailed tapered design of a channel contains the following information: the method comprises the following steps of channel name, channel effective value val, channel quality, channel change step, channel type chnType (including delay, voltage and current), gradual change starting value startVal, gradual change ending value stopVal, gradual change enabling chnEn and channel phase.

And 4) enabling the channel to generate variable voltage and current according to the rule described by the information, and generating a message in a standard SV 9-2 format according to the requirements of an SV standard protocol.

4.1> by reading the configuration information on the interface, it is found that the channel type is current channel Ia, the amplitude rms is 1.0 ampere, and the phase angle phase is 0 degrees. The CT ratio is the primary nominal value of 1200.0A divided by the secondary nominal value of 1.0A, i.e., 1200.

4.2> by reading the interface configuration, the frequency freq is 50.0Hz, the sampling point number per second (sampling rate) is 4000, and the sampling point number required by one cycle current can be calculated by dividing 4000 by 50Hz, namely 80 by using the two data.

4.3> by reading the interface gradient configuration, the step size is 0.1A, the starting value (current amplitude) is 1.414A, and the duration of each step is 1 second.

4.4> then the first 1 second would send 50 cycles of Ia current data, 80 points per cycle. The value V1i = 1.414 CT sin (2 PI i/80 phase PI/180)) at point i, where PI is the circumferential rate constant 3.1415927 and i takes from 1 to 80.

4.5> after the V1i data is sent for 1 second, the current amplitude is 1.514A after the initial value is 1.414 and the step size is 0.1. The 2 nd second transmission data V2i is calculated by the formula: v2i = 1.514 × CT × sin (2 × PI i/80-phase × PI/180)).

And when the time is 4.6> to 3 seconds, accumulating the current amplitude by 0.1, wherein the current amplitude is 1.614A, and recalculating the sending data. And repeating the steps in sequence until the accumulated value reaches the final value set by the step change.

And 4.7, determining the finally output data after the experiment according to whether the gradient setting returns to the initial value or the final value after the final value of the gradient setting is reached. If the initial value is selected, the transmitted data is the data calculated in 4.4.

When SV sampling data is sent, a microsecond counter of a system is obtained through QueryPerformancecounter (), the sending of sampling point data is jittered by more than 80% within 5us in a dead loop counting mode, the smaller the jitter is, the better the jitter is, and thus the data flow is relatively stable.

The last point transmission time is recorded in a pre64 counter, and then the value of a new 64-bit counter is continuously inquired until the inquired value is compared with pre64 and is greater than the sampling interval, and the value of the next sampling point is immediately transmitted.

The Windows system acquires the counter through the query performance counter (), and the technical interval is nanosecond. The interval between two sampling points is 250us when the analog sampling frequency is 4000 Hz/s. Through continuous query, the current sampling point is immediately sent when the time of the next sampling point and the time of the last sampling point > =250us, so that the jitter of the sampling point of more than 80% of the whole sent data is within 5 us. (meaning any two data intervals are 250us + -5 us).

The flow of GOOSE automatic tapered message sending, as shown in fig. 2, includes the following steps 5-8, which are described in detail below.

Step 5) configuring basic configuration information of the GOOSE, wherein the basic configuration information comprises a source MAC address, a destination MAC address, a control block mark GoID, a control block reference name GocbRef, a data set reference name DatSet, a sending Time, an allowed Time of existence Tal, a configuration version ConfRev, an application identifier AppID, a virtual local area network name VLANID, Priority, a shift counter StNum, a sequence counter Sqnum, a Test identifier Test and a needlecomision identifier ndsCom.

The basic information required by the GOOSE message can be imported from a CCD file or manually input. The CCD file is a standard file of the power system device, from which SV, GOOSE basic configuration information can be acquired.

Referring to fig. 5, the basic configuration information for configuring GOOSE includes source MAC address 00-00-01-00-00-01, destination MAC address 0 01-0C-CD-01-00-01, GoID PSL-621U, smvdb 01, ConfRev 1, AppID 0x0001, Priority 0, vlan id 0, Tal 10000, StNum 1, and SqNum 100.

Step 6) configuring a GOOSE control block.

As shown in fig. five, a control block is added to the GOOSE control block list, and the basic information in the fifth step is configured. Then, the number of signals contained in the data set is added to the GOOSE data set portion, and the type and default value of each signal are configured.

And 7) configuring GOOSE sending sequence information, wherein seq represents the several nodes sending the sequence, interval represents the time interval with the last node, and the unit is millisecond. v0, v1, v2 … … represent the values of n data in each node GOOSE block.

If a GOOSE control block is configured as 4 input signals as shown in fig. 5, according to the GOOSE protocol, when any one signal has a shift, StNum is added with 1, then SqNum is returned to 0, and 4 frames of data are transmitted at intervals of 2, 2, 4, 8 ms, and then transmitted in 5 seconds for one frame, and each transmitted frame of data SqNum is added with 1. This is repeated in sequence until the next shift occurs. The abnormal situation of various GOOSE data can be configured as shown in fig. 6, so as to detect whether the device to be tested can work normally.

Assuming that a sequence of 8 transmissions is configured for the upper control block, with a single signal shift in between, the normal transmission sequence can be configured as follows by fig. 6:

clicking the first point of the add button add sequence with a delay of 5000 milliseconds, stNum =3, sqNum =5, and four signal values of 0110;

adding a second point of the sequence, setting the delay to 5000 milliseconds, stNum =3, sqNum =6, and obtaining four signal values of 0110;

adding the third point of the sequence, setting the delay to be 2 milliseconds, stNum =1, sqNum =0, four signal values of 0010, and the second signal displacement;

adding the fourth point of the sequence, setting the delay to 2 milliseconds, stNum =1, sqNum =1, and four signal values 0010;

adding the fifth point of the sequence, setting the delay to 4 milliseconds, stNum =1, sqNum =2, and 0010 as four signal values;

adding the sixth point of the sequence, setting the delay to 8 milliseconds, stNum =1, sqNum =3, and 0010 as four signal values;

adding a seventh point of the sequence, setting the delay to be 5000 milliseconds, stNum =1, sqNum =4, and setting four signal values to be 0010;

adding an eighth point of the sequence, setting the delay to be 5000 milliseconds, stNum =1, sqNum =5, and setting four signal values to be 0010;

if one wants to simulate a transition of sqNum, the ninth point can be made as follows (for normal changes, sqNum should be made to 6):

the ninth point of the sequence is added with a delay of 5000 ms, stNum =1, sqNum =7, and the four signal values are 0010.

And 8) storing the configuration information in the steps 5-7 in an XML format, and importing the configuration information from a stored file.

Xml storage format reference vstgse. xml is:

<SAC-VST-GooseCfg>

</Goose>

</SAC-VST-GooseCfg>

9) and selecting an Ethernet port and sending standard GOOSE message data.

Taking fig. 5 as an example, if "use sequence" is not selected, and the automatic transmission is clicked, the first dot is transmitted with stNum =1, sqNum =1, and four signal values of 0000. Let

postamble

2, 2, 4, 8 ms, sqNum be 2, 3, 4, 5 respectively and send four points, then according to figure five sets up 5000 ms intervals, sqNum is 5, 6, 7.

If the "use sequence" is selected, click the sequence configuration button, and assume that the sequence is configured according to the method of step 6. The software reads the information from the interface and,

stNum =3, sqNum =5, and four signal values of 0110 are transmitted at 5000 ms;

stNum =3, sqNum =6 and four signal values are 0110 are sent at the 10 th second;

stNum =1, sqNum =0 and four signal values 0010 are transmitted at 2 ms in the 10 th second;

stNum =1, sqNum =1, and four signal values 0010 are transmitted at 4 ms in the 10 th second;

stNum =1, sqNum =2, and four signal values 0010 are transmitted at 8 ms in the 10 th second;

stNum =1, sqNum =3, and four signal values 0010 are transmitted at 16 ms in the 10 th second;

stNum =1, sqNum =4 and four signal values 0010 are transmitted at 16 ms in the 15 th second;

stNum =1, sqNum =5 and four signal values 0010 are transmitted at 16 ms in the 20 th second;

stNum =1, sqNum =7, and four signal values 0010 are transmitted at 16 msec at 25 seconds.

The invention simulates the abnormal conditions of various voltages and currents by configuring SV basic information and gradient information. Various GOOSE signal abnormal conditions are simulated by configuring GOOSE basic information and a tapered sequence.

The invention sets the initial value, the stepping interval and the final value of the voltage and the current, so that the transmitted SV data can simulate various voltage and current anomalies. By setting the interval between experiments, the system supports multiple circulation experiments. By setting the value, sending time, stNum and sqNum of each point of the GOOSE sequence, various field signals and GOOSE abnormal conditions can be simulated. The system can be directly deployed on a computer running a windows system, and great convenience is brought to development, test and deployment of the relay protection device.

The implementation scheme of each module in the system of the invention is shown in the concrete implementation steps of the method.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. An SV-GSE automatic transmutation method for a relay protection device process layer is characterized by comprising the following steps:

configuring SV basic configuration information;

configuring basic configuration information of GOOSE;

2. The SV-GSE automatic transmutation method for the relay protection device process layer as claimed in claim 1, wherein the SV basic configuration information comprises: the system comprises a source MAC address, a target MAC address, a sampling message identifier SmvID, a configuration version number ConfRev, an application identifier AppID, Priority, a virtual local area network name VLaniD, a secondary voltage rated value secondVol, a primary voltage rated value firstVol, a secondary current rated value secondCurrent, a primary current rated value firstCurrent and a sampling rate SampleRate.

3. The SV-GSE automatic grading method for the process layer of the relay protection device as recited in claim 1, wherein the variation comprises amplitude, phase angle and frequency.

4. The SV-GSE automatic transmutation method for the relay protection device process layer as claimed in claim 1, wherein the SV transmutation information further comprises: and if the variable quantity is automatically changed, outputting a stable sine wave, and if the variable quantity is automatically changed, outputting a waveform which is changed according to a set change rule.

5. The SV-GSE automatic grading method for the relay protection device process layer according to claim 1, wherein the obtaining of the varying voltage or current according to the SV grading information comprises:

6. The SV-GSE automatic transmutation method for the process layer of the relay protection device as claimed in claim 1, wherein the GOOSE basic configuration information comprises: a source MAC address, a destination MAC address, a control block tag GoID, a control block reference name GocbRef, a data set reference name DatSet, a transmission Time, an allowed Time to live Tal, a configuration version ConfRev, an application identifier AppID, a virtual local area network name VLanID, a Priority, a shift counter StNum, a sequence counter SqNum, a Test identifier Test, and a feeds command identifier ndsCom.

7. An SV-GSE automatic transmutation system for a relay protection device process layer is characterized by comprising: