CN111025183A - Transformer substation signal alarm calibration method and device - Google Patents
Transformer substation signal alarm calibration method and device Download PDFInfo
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Abstract
The application relates to a transformer substation signal alarm checking method and device. According to the transformer substation signal alarm checking method, a test signal is sent according to the current signal state of a point to be checked, and the test signal state is opposite to the current signal state of the point to be checked. And generating an alarm signal according to the test signal. And judging whether the alarm signal is equal to a preset alarm signal or not, and judging that the signal alarm function performance of the transformer substation is complete when the alarm signal is equal to the preset alarm signal. According to the transformer substation signal alarm checking method, the test signal with the state opposite to that of the current signal is sent, so that displacement of the alarm signal can be acquired in time. The transformer substation signal alarm checking method can replace manual work to carry out alarm function checking so as to reduce manual repetitive work and improve the accuracy and efficiency of checking work.
Description
Technical Field
The application relates to the field of power equipment, in particular to a transformer substation signal alarm checking method and device.
Background
The transformer substation based on the integrated automation system (hereinafter referred to as an integrated substation) refers to a transformer substation applying modern electronic technology, communication technology and integrated microcomputer relay protection technology. Different from a transformer substation on duty, the comprehensive transformer substation can realize remote operation and remote monitoring functions of all equipment. The signal alarm function of the integrated automatic transformer substation is realized by the combined action of integrated automatic system equipment, a signal secondary circuit and a signal source contact. The signal alarm function needs to be checked for the first time before commissioning, and then the signal alarm function needs to be checked for maintenance regularly.
At present, the checking of the signal warning function of the integrated substation needs to be carried out manually, and the checking process is as follows: and sending a signal by artificial simulation, and carrying out artificial confirmation in the comprehensive automatic monitoring background. When the alarm signal is manually checked, the signal contact needs to be manually closed (or opened), so that the alarm signal correspondingly occurs (or returns), and the manual checking mode comprises short-circuit by using a short-circuit tool, so that the contact is closed, a connecting line is untied, the contact is opened and the like. In the actual manual operation process, the possibility of misoperation such as loop short circuit caused by short circuit errors and loop power loss caused by disconnection errors exists, and finally, the error exists in the signal verification result. Since both signaling and signaling confirmation are done manually, there are two variables. In addition, indirect factors influencing manual checking, such as drawing design errors and identification printing errors, exist, so that the manual checking work is low in accuracy and efficiency.
Disclosure of Invention
Therefore, it is necessary to provide a transformer substation signal alarm checking method and device for solving the problems of low accuracy and low efficiency of manual checking work.
A transformer substation signal alarm checking method comprises the following steps:
s10, acquiring the current signal state of the point to be checked, and sending a test signal to the point to be checked, wherein the test signal state is opposite to the current signal state of the point to be checked;
s20, generating an alarm signal according to the test signal;
and S30, judging whether the alarm signal is the same as a preset alarm signal, and judging that the signal alarm function performance of the transformer substation is good when the alarm signal is the same as the preset alarm signal.
In one embodiment, when the alarm signal is different from the preset alarm signal, it is determined that the substation signal alarm function needs to be repaired.
In one embodiment, the S10, acquiring a current signal state of the point to be verified, and sending a test signal to the point to be verified, where the step of comparing the test signal state with the current signal state of the point to be verified includes:
and judging the current signal state of the point to be checked, wherein the signal state comprises a short circuit state and an open circuit state.
In one embodiment, when the current signal state of the point to be checked is a short-circuit state, the test signal is a disconnection signal, and when the generated alarm signal is reset according to the disconnection signal, the substation signal alarm function is judged to be complete.
In one embodiment, when the current signal state of the point to be checked is an open circuit state, the test signal is a short-circuit signal, and when the generated alarm signal is an alarm according to the short-circuit signal, the signal alarm function of the substation is judged to be complete.
In one embodiment, the step S30 of determining whether the alarm signal is the same as a preset alarm signal, and when the alarm signal is the same as the preset alarm signal, determining that the substation signal alarm function is good includes:
and generating a standard report according to the judgment results in the short circuit state and the open circuit state, and outputting the standard report.
A substation signal warning verification device comprises:
the test signal generation module is connected with one end of the tested relay protection device and used for sending a test signal according to the current signal state of a point to be checked, wherein the test signal state is opposite to the current signal state of the point to be checked;
the alarm signal acquisition module is connected with the other end of the tested relay protection device and used for generating an alarm signal; and
and the checking module is connected with the alarm signal acquisition module and used for judging whether the alarm signal is equal to a preset alarm signal or not, and judging that the signal alarm function performance of the transformer substation is complete when the alarm signal is equal to the preset alarm signal.
In one embodiment, the method further comprises the following steps:
and the current signal state acquisition module is connected with the test signal generation module and used for judging the current signal state of the point to be checked, wherein the signal state comprises short circuit and open circuit.
In one embodiment, the method further comprises the following steps:
and the message checking module is connected with the checking module and is used for comparing and verifying the judgment result according to a standard message.
In one embodiment, the method further comprises the following steps:
and the standard report generating module is connected with the message checking module and used for generating a standard report from the verification result of the message checking module and outputting the standard report.
According to the transformer substation signal alarm checking method, a test signal is sent according to the current signal state of a point to be checked, and the test signal state is opposite to the current signal state of the point to be checked. And generating an alarm signal according to the test signal. And judging whether the alarm signal is equal to a preset alarm signal or not, and judging that the signal alarm function performance of the transformer substation is complete when the alarm signal is equal to the preset alarm signal. According to the transformer substation signal alarm checking method, the test signal with the state opposite to that of the current signal is sent, so that displacement of the alarm signal can be acquired in time. The transformer substation signal alarm checking method can replace manual work to carry out alarm function checking so as to reduce manual repetitive work and improve the accuracy and efficiency of checking work.
Drawings
Fig. 1 is a flowchart of a substation signal alarm checking method according to an embodiment of the present application;
fig. 2 is a flowchart of a substation signal alarm checking method according to an embodiment of the present application;
fig. 3 is a structural diagram of a substation signal alarm checking device according to an embodiment of the present application;
fig. 4 is a structural diagram of a substation signal alarm checking device according to an embodiment of the present application;
fig. 5 is a schematic diagram of a test signal control loop of a substation signal alarm checking device according to an embodiment of the present application.
Description of the main element reference numerals
Transformer substation signal warning calibration device 10
Test signal generating module 100
Alarm signal acquisition module 200
Current signal state acquisition module 400
Standard report generating module 600
Detailed Description
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and those skilled in the art will be able to make similar modifications without departing from the spirit of the application and it is therefore not intended to be limited to the embodiments disclosed below.
It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
When the alarm signal is manually checked, the signal contact needs to be manually closed (or opened), so that the alarm signal correspondingly occurs (or returns), and the manual checking mode comprises the steps of closing the contact by using a short-circuit tool to short-circuit, opening a connecting line to open the contact and the like. The variable factors causing the signal check error are composed of artificial factors, which are respectively: (1) a target terminal short circuit error; (2) the target connecting line is free from errors; (3) the target signal acknowledges the error.
Aiming at the problems, the transformer substation signal alarm checking method is provided. The transformer substation signal alarm checking method is designed based on a programmable comprehensive automatic monitoring background, and a set of automatic checking method and equipment are designed and added to complete alarm signal checking on the premise of not reducing the reliability of a signal alarm loop and the reliability of other functional loops by utilizing the existing comprehensive automatic system equipment. The transformer substation signal alarm checking method comprises the following steps:
s10, acquiring the current signal state of the point to be checked, and sending a test signal to the point to be checked, wherein the test signal state is opposite to the current signal state of the point to be checked. In step S10, the signal states of the point to be verified include a short-circuit state and an open-circuit state. Java may be utilized as the programming language. The shorted state may be replaced with 1. The off state may be replaced with 0. In one optional embodiment, in step S10, the current signal state of the point to be verified is obtained, and a test signal is sent to the point to be verified, where the current signal state of the point to be verified may be determined before the step of comparing the test signal state with the current signal state of the point to be verified, where the signal state includes a short circuit state and an open circuit state. The current signal state of the point to be checked may be obtained by the current signal state obtaining module 400.
And S20, generating an alarm signal according to the test signal. In step S20, the alarm signal includes "alarm" and "reset".
And S30, judging whether the alarm signal is the same as a preset alarm signal, and judging that the signal alarm function performance of the transformer substation is good when the alarm signal is the same as the preset alarm signal. In step S30, when the alarm signal is different from the preset alarm signal, it is determined that the substation signal alarm function needs to be repaired.
In this embodiment, the transformer substation signal alarm checking method sends the test signal according to the current signal state of the point to be checked, where the test signal state is opposite to the current signal state of the point to be checked. And generating an alarm signal according to the test signal. And judging whether the alarm signal is equal to a preset alarm signal or not, and judging that the signal alarm function performance of the transformer substation is complete when the alarm signal is equal to the preset alarm signal. According to the transformer substation signal alarm checking method, the test signal with the state opposite to that of the current signal is sent, so that displacement of the alarm signal can be acquired in time. The transformer substation signal alarm checking method can replace manual work to carry out alarm function checking so as to reduce manual repetitive work and improve the accuracy and efficiency of checking work.
Referring to fig. 2, in an alternative embodiment, when the current signal state of the point to be checked is a short circuit state, the test signal is a disconnection signal, and when the generated alarm signal is "reset" according to the disconnection signal, it is determined that the substation signal alarm function is complete. And when the generated alarm signal is 'alarm' according to the disconnection signal, judging that the signal alarm function of the transformer substation is in fault and needing to be overhauled.
In an optional embodiment, when the current signal state of the point to be checked is an open circuit state, the test signal is a short circuit signal. And when the generated alarm signal is 'alarm' according to the short-circuit signal, judging that the signal alarm function performance of the transformer substation is intact. And when the generated alarm signal is reset according to the short-circuit signal, judging that the performance of the transformer substation signal alarm function is in fault and needing to be overhauled.
In one embodiment, the step S30 of determining whether the alarm signal is the same as a preset alarm signal, and when the alarm signal is the same as the preset alarm signal, determining that the substation signal alarm function is good includes:
and generating a standard report according to the judgment results in the short circuit state and the open circuit state, and outputting the standard report. The standard report can comprise information such as a verification result, a point number to be measured and the like. The standard report may be stored for ready reading by the staff. And the staff can overhaul the substation alarm equipment according to the standard report.
Referring to fig. 3, the present application provides a substation signal alarm checking device 10. The substation signal alarm checking device 10 includes a test signal generating module 100, an alarm signal acquiring module 200, and a checking module 300.
The test signal generating module 100 is connected with one end of the relay protection device to be tested. The test signal generating module 100 is configured to send a test signal according to a current signal state of a point to be checked, where the test signal state is opposite to the current signal state of the point to be checked. The alarm signal acquisition module 200 is connected to the other end of the relay protection device to be tested, and is configured to generate an alarm signal. The checking module 300 is connected to the warning signal obtaining module 200, and the checking module 300 is configured to determine whether the warning signal is equal to a preset warning signal, and determine that the transformer substation signal warning function is complete when the warning signal is equal to the preset warning signal.
After the transformer substation signal alarm checking device 10 enters the signal checking function through manual indication, the test signal generation module 100 generates the alarm state i according to the items 1-n of the signalnAnd sending a test signal to the point to be verified. I.e. inWhen the signal is 1, the nth signal is short-circuited; i.e. inWhen the signal of the nth term is 0, the connecting line is disconnected.
The alarm signal acquiring module 200 will receive the deflection of the alarm signal, i.e. the change of the alarm state value (i)n＝1→in0 or in＝0→in1). The state value of the alarm signal is
The test signal state value should be
The checking module 300 completes the result comparison through a preset comparison program (preset alarm signal). The comparison program compares the state value of the alarm signal to know whether the result is correct, that is to say
If IN＝I'NIf so, the comparison result is correct. If IN≠I'NIf so, the comparison result is incorrect.
In this embodiment, the test signal generating module 100 sends a test signal according to a current signal state of a point to be checked, where the test signal state is opposite to the current signal state of the point to be checked. The alarm signal obtaining module 200 generates an alarm signal according to the test signal. The checking module 300 determines whether the alarm signal is equal to a preset alarm signal, and determines that the transformer substation signal alarm function is complete when the alarm signal is equal to the preset alarm signal. The substation signal warning calibration device 10 sends a test signal with a state opposite to that of the current signal, so that displacement of the warning signal can be timely obtained, the substation signal warning calibration device 10 can replace manual warning function calibration, manual repetitive work is reduced, and the accuracy and efficiency of calibration work are improved.
Referring to fig. 4, in one embodiment, the substation signal alarm checking device 10 further includes a current signal status obtaining module 400, a message checking module 500, and a standard report generating module 600.
The current signal state obtaining module 400 is connected to the test signal generating module 100. The current signal state obtaining module 400 is configured to determine a current signal state of the point to be checked. The signal conditions include short circuits and open circuits. After the transformer substation signal alarm checking device 10 enters the signal checking function through manual indication, the program firstly judges the alarm state i of the 1-n items of signalsnThe states are classified into "alarm (i ═ 1)" and "reset (i ═ 0)".
The message checking module 500 is connected to the checking module 300. The message checking module 500 is configured to compare and verify the determination result according to a standard message. The standard report generating module 600 is connected to the message checking module 500. The standard report generating module 600 is configured to generate a standard report from the verification result of the message verifying module 500, and output the standard report. The standard report can comprise information such as a verification result, a point number to be measured and the like. The standard report may be stored for ready reading by the staff. And the staff can overhaul the substation alarm equipment according to the standard report.
Referring to fig. 5, fig. 5 is a schematic diagram of a test signal control loop of a substation signal alarm checking device according to an embodiment of the present disclosure. After receiving the start signal of the operation and maintenance personnel, the substation signal warning verification device 10 in fig. 5 sends out a test signal according to the state of the warning signal, where the test signal is opposite to the state of the warning signal immediately before the test, and when i isAWhen the original state of the item signal is 0, the test signal generation module 100 sends an A short-circuit signal to excite the A short-circuit relay, so that the contact of the A short-circuit relay is closed, and the signal sending is realized. In the same way, when iAWhen the original state of the item signal is 1, the test signal generation module 100 sends an A off signal to enable the A off relay to be excited, and the A off relay contact is disconnected, so that signal resetting is achieved.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A transformer substation signal alarm checking method is characterized by comprising the following steps:
s10, acquiring the current signal state of the point to be checked, and sending a test signal to the point to be checked, wherein the test signal state is opposite to the current signal state of the point to be checked;
s20, generating an alarm signal according to the test signal;
and S30, judging whether the alarm signal is the same as a preset alarm signal, and judging that the signal alarm function performance of the transformer substation is good when the alarm signal is the same as the preset alarm signal.
2. The substation signal alarm checking method of claim 1, wherein when the alarm signal is not the same as the preset alarm signal, it is determined that the substation signal alarm function needs to be serviced.
3. The substation signal alarm checking method according to claim 2, wherein the step S10 of acquiring a current signal state of a point to be checked and sending a test signal to the point to be checked, where the step of the test signal state being opposite to the current signal state of the point to be checked is preceded by:
and judging the current signal state of the point to be checked, wherein the signal state comprises a short circuit state and an open circuit state.
4. The substation signal alarm checking method according to claim 3, wherein when the current signal state of the point to be checked is a short circuit state, the test signal is a disconnection signal, and when the alarm signal generated according to the disconnection signal is reset, it is determined that the substation signal alarm function is good.
5. The substation signal alarm checking method according to claim 4, wherein when the current signal state of the point to be checked is an open circuit state, the test signal is a short-circuit signal, and when the alarm signal generated according to the short-circuit signal is an "alarm", it is determined that the substation signal alarm function is complete.
6. The substation signal alarm checking method according to claim 5, wherein the step of determining whether the alarm signal is the same as a preset alarm signal at S30, and when the alarm signal is the same as the preset alarm signal, determining that the substation signal alarm function is complete comprises the steps of:
and generating a standard report according to the judgment results in the short circuit state and the open circuit state, and outputting the standard report.
7. The utility model provides a transformer substation's signal warning calibration equipment which characterized in that includes:
the device comprises a test signal generating module (100) which is connected with one end of a tested relay protection device and used for sending a test signal according to the current signal state of a point to be checked, wherein the test signal state is opposite to the current signal state of the point to be checked;
the alarm signal acquisition module (200) is connected with the other end of the tested relay protection device and is used for generating an alarm signal; and
and the checking module (300) is connected with the alarm signal acquisition module (200) and is used for judging whether the alarm signal is equal to a preset alarm signal or not, and judging that the signal alarm function performance of the transformer substation is complete when the alarm signal is equal to the preset alarm signal.
8. The substation signal warning verification device of claim 7, further comprising:
and the current signal state acquisition module (400) is connected with the test signal generation module (100) and is used for judging the current signal state of the point to be checked, wherein the signal state comprises short circuit and open circuit.
9. The substation signal warning verification device of claim 8, further comprising:
and the message checking module (500) is connected with the checking module (300) and is used for comparing and verifying the judgment result according to a standard message.
10. The substation signal warning verification device of claim 9, further comprising:
and the standard report generating module (600) is connected with the message checking module (500) and is used for generating a standard report according to the verification result of the message checking module (500) and outputting the standard report.
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