CN115528643A - Excitation wave recording method and system - Google Patents

Abstract

The invention discloses an excitation wave recording method and system, wherein the excitation wave recording comprises disturbance wave recording and action wave recording; the excitation recording refers to that when the specified excitation occurs, the relay protection device records the current instantaneous value, the voltage instantaneous value, the value of the input quantity, the value of the output quantity, the value of the virtual remote signaling before, during and after the specified excitation occurs, and the variable values of all intermediate monitoring points related to the working logic of the protection function which is put into operation in the period; the excitation of disturbance recording is that the sudden change of the input current or voltage exceeds the set starting fixed value of the sudden change of the disturbance recording, or the input quantity, the output quantity and the virtual remote signaling are changed; and the excitation of the action recording is that the fixed value corresponding to the protection function which is put into operation meets the action condition. The method can check the input and output of the backup power automatic switching device and the variable value of the middle monitoring point through action recording and disturbance recording under the condition that the traditional fault recording cannot be started, and is convenient for follow-up fault analysis.

Description

Method and system for excitation wave recording

technical field

The invention relates to the technical field of relay protection, in particular to an excitation wave recording method and system.

Background technique

The traditional relay protection device has a fault recording function, which is used to record according to time intervals when a fault occurs and the protection outlet operates, and according to the COMTRADE format, to record the instantaneous values of current and voltage before, during, and after the fault occurs , and record the input value and output value during this period, so that it is convenient to open this COMTRADE file afterwards and analyze the entire action behavior of the fault.

However, if the following two situations exist, it is difficult to use the traditional fault recording function to analyze the action situation.

The first situation is: when the relay protection device is debugged or running, the current or voltage of the protection function meets the fixed value requirements, but the action time limit is not exceeded, that is, the protection has no exit action, so there is no fault recording, and it is impossible to know that the protection exceeds the fixed value. value case.

The second situation is: when the relay protection device is debugged or running, the current or voltage of the protection function does not meet the fixed value requirements, the protection element does not operate, and there is no outlet action, so there is no fault recorder, and it is impossible to analyze the protection without action. reason.

Therefore, in the above two cases, it is impossible to accurately understand, sometimes unable to understand the specific situation of the action of the protection logic, and it is difficult to analyze and solve the problem. In addition, unlike conventional measurement and control devices, relay protection devices may not operate for many years, and it is impossible to know their working conditions, operating behavior, and fluctuations in voltage and current during this period. It is urgent to provide a method to accurately record The working condition, action behavior and fluctuation of voltage and current of the relay protection device.

Contents of the invention

Purpose of the invention: In view of the above technical problems, the present invention provides an excitation wave recording method. In the case that the traditional fault wave recording cannot be started, the action wave recording (corresponding to the aforementioned first case) and the disturbance wave recording (corresponding to the aforementioned The second case) Obtaining the recorded wave chart to view the input and output of the standby self-injection and the variable value of the intermediate monitoring point, which is convenient for subsequent fault analysis; at the same time, the present invention also provides a system for stimulating wave recording, which can view the input and output of the standby automatic input and output and Variable values for intermediate watchpoints.

Technical solution: In order to solve the above problems, the present invention discloses an excitation wave recording method, and the excitation wave recording includes disturbance wave recording and action wave recording;

The excitation wave recording means that when the specified excitation occurs, the relay protection device records the current instantaneous value and voltage instantaneous value before, during, and after the specified excitation occurs according to the time interval and in accordance with the COMTRADE format, and simultaneously records During this period, the value of the input quantity, the value of the binary output quantity, the value of the virtual remote signal, and the variable values of all intermediate monitoring points related to the working logic of the protection function put into operation during this period, including the timing of the counter; The input value refers to the switching value of the input, and it is "1" if there is a binary input, and "0" if there is no binary input; the binary output refers to the switching value of the output, and it is "1" if there is a binary output ", it is "0" if there is no binary output; the virtual remote signal is expressed as the logic value of the binary input, if there is a virtual remote signal input, it is "1", and if there is no virtual remote signal input, it is "0";

The excitation of the disturbance recording is that the sudden change of the input current or voltage exceeds the set start-up value of the disturbance recording sudden change, or the binary input, binary output and virtual remote signal change; the sudden change refers to the input The change value of current or voltage; the excitation of action wave recording is that the fixed value corresponding to the protection function put into operation satisfies the action condition.

Further, the excitation wave recording method performs function selection through the wave recording menu, and the function selection is selected and set through the display panel and keyboard of the relay protection device, and the function selection is set through computer communication; The wave menu includes two levels. The excitation wave recording menu option is set in the first level menu. The action wave recording function option, the disturbance wave recording function option, the disturbance wave recording current mutation start constant value setting option, and the disturbance wave recording function option are set in the second level menu. Wave recording voltage mutation start fixed value setting option; complete the corresponding excitation by selecting the action wave recording function option, disturbance wave recording function option, and setting the start value of the disturbance wave recording current sudden change amount and the disturbance wave recording voltage sudden change start value. Wave recording, and correspondingly save the selected wave recording in the relay protection device.

Further, the disturbance recording, the action recording, and the traditional fault recording are located in different storage areas of the relay protection device, and the priority of storage is increasing in order.

Further, the priority of uploading the disturbance recording, action recording, and fault recording to the background server is sequentially increased.

In addition, the present invention also provides an excitation wave recording system, including a disturbance wave recording module and an action wave recording module;

The disturbance wave recording module is used to record the current instantaneous value and voltage before, during, and after the specified excitation occurs according to the time interval and in accordance with the COMTRADE format when the excitation specified by the disturbance wave recording occurs. Instantaneous value, while recording the value of binary input, binary output, and virtual remote signal during this period, and recording the variable values of all intermediate monitoring points related to the working logic of the protection function put into operation during this period, including The timing of the counter; the binary input refers to the input switching value. If there is a binary input, it is "1", and if there is no binary input, it is "0"; the binary output refers to the output switching value. Output output is "1", and no output is "0"; the virtual remote signal is expressed as the logic value of binary input, and virtual remote signal input is "1", and virtual remote signal input is "1". Then it is "0"; the excitation of the disturbance recording is that the input current or voltage sudden change exceeds the set start value of the disturbance recording sudden change, or the binary input, binary output, and virtual remote signal change; The sudden change refers to the change value of the input current or voltage;

The action wave recording module is used to record the current instantaneous value and voltage before, during, and after the specified excitation occurs according to the time interval and COMTRADE format when the excitation specified by the action wave recording occurs. Instantaneous value, while recording the value of binary input, binary output, and virtual remote signal during this period, and recording the variable values of all intermediate monitoring points related to the working logic of the protection function put into operation during this period, including The timing of the counter; the binary input refers to the input switching value. If there is a binary input, it is "1", and if there is no binary input, it is "0"; the binary output refers to the output switching value. Output output is "1", and no output is "0"; the virtual remote signal is expressed as the logic value of binary input, and virtual remote signal input is "1", and virtual remote signal input is "1". Then it is "0"; the excitation of action wave recording is that the fixed value corresponding to the protection function put into operation satisfies the action condition.

In addition, the present invention also provides a computer device, including a memory, a processor, and a computer program stored in the memory and operable on the processor, and the processor implements the steps of the above method when executing the computer program. A computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the above method are realized.

Beneficial effects: The present invention provides an excitation wave recording method. Compared with the prior art, its remarkable advantages are: 1. When the voltage, current, and binary input meet the protection action conditions, but the protection has no exit action, the traditional fault wave recording cannot In the case of start-up, the variable values of the input and output of the standby auto-input and the intermediate monitoring point are obtained through action recording, which is convenient for subsequent fault analysis; Operating conditions, the specific working conditions, operating behaviors, and voltage and current fluctuations of the relay protection device are obtained through disturbance recording.

The present invention also provides an excitation wave recording system, which has significant advantages over the prior art. It can obtain the specific working conditions, action behavior, voltage and current conditions of the relay protection device through the action wave recording module and the disturbance wave recording module. .

Description of drawings

Fig. 1 shows the menu structure of excitation wave recording in the present invention.

Fig. 2 is a discharge logic diagram of mode 3 of automatic switch-on of the central standby in the present invention.

Fig. 3 is a logic diagram of charging in mode 3 of automatic switch-on mode 3 of the present invention.

Fig. 4 is an action logic diagram of mode 3 of the automatic switching mode of the central backup of the present invention.

detailed description

The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.

The invention provides an excitation wave recording method. The excitation wave recording means that when the specified excitation occurs, the relay protection device records the current instantaneous value before, during and after the specified excitation occurs according to the time interval and in accordance with the COMTRADE format. , voltage instantaneous value, and simultaneously record the value of binary input, binary output, virtual remote signal and variable values of all intermediate monitoring points related to the working logic of the protection function put into operation during this period, Including the timing of the counter; the binary input refers to the input switching value, if there is a binary input, it is "1", and if there is no binary input, it is "0"; the binary output refers to the output switching value, if there is Binary output is "1" and "0" if there is no binary output; the virtual remote signal refers to the logic value expressed as binary input in the software, and it is "1" if there is virtual remote signal input, and "0" if there is no binary output. The virtual remote signal input is "0";

The excitation of the disturbance recording is that the sudden change of the input current or voltage exceeds the set start-up value of the disturbance recording sudden change, or the binary input, binary output and virtual remote signal change; the sudden change refers to the input The change value of current or voltage; the excitation of action wave recording is that the fixed value corresponding to the protection function put into operation satisfies the action condition.

Specifically, the excitation wave recording method provided by the present invention performs function selection through the wave recording menu, as shown in FIG. 1 . The excitation recording menu includes two levels. The excitation recording menu option is set in the first-level menu, and the action recording function option, disturbance recording function option, and disturbance recording current mutation start constant value setting option are set in the second-level menu. , Disturbance recording voltage sudden change start fixed value setting option.

As shown in Figure 2 to Figure 4, they respectively correspond to the logic diagrams of discharge, charge and action of a backup power automatic input mode (preparation automatic input mode 3), and further elaborate on different application scenarios based on the logic diagrams in Figure 2 to Figure 4 .

Scenario 1. When the voltage, current, and binary input meet the action conditions of the standby automatic switch, the standby switch jumps 1DL, that is, the standby switch has an exit action.

In the recording menu structure, "Select Action Recording" and "Select Disturbance Recording" are not selected.

For this scenario, since the standby self-injection jumps 1DL, that is, the standby self-injection has an exit action, at this time the traditional fault recording in the relay protection device is started, and the input and output of the standby automatic input (corresponding to At the monitoring point 1-16) the action process.

Therefore, when a fault occurs in Scenario 1 and the protection exit takes action, the traditional fault recording function can be used to obtain relevant fault information and perform subsequent analysis.

Scenario 2: When the voltage, current, and binary input meet the action conditions of the standby automatic switch, but the standby automatic switch does not jump 1DL, that is, the standby automatic switch does not have an exit action, and the standby automatic switch should operate but does not.

In the recording menu structure, "Select Action Recording" and "Select Disturbance Recording" are not selected.

For this scenario, since the standby automatic switch has no exit action, the traditional fault recording cannot be started. If "Select Action Recording" and "Select Disturbance Recording" are not selected, it is impossible to record and obtain the input and output of the backup and automatic switching, as well as the action process of the intermediate monitoring point for such scenarios, so that fault analysis cannot be performed.

Scenario 3: When the voltage, current, and binary input meet the operation conditions of the standby automatic switch, but the standby automatic switch does not jump 1DL, and at the same time, the "1 female no voltage" action.

In the structure setting of the recording menu, select "Select Action Recording" and uncheck "Select Disturbance Recording".

For this scenario, the traditional fault recording cannot be started because the standby auto-input has no exit action. However, due to the action of "no voltage at 1 bus", that is, the action of monitoring point 12 in Figure 3, that is, the fixed value corresponding to the protection function put into operation meets the action conditions, and the action wave recording starts, not only can record and obtain the input and output of the conventional standby automatic input ( Corresponding to the action process of the monitoring points 1-16), the action process of the intermediate monitoring points 17-20 can also be recorded and acquired, wherein the intermediate monitoring points 19 and 20 are the timing of the counter.

Therefore, although the fault recording cannot be started for scene 3, due to the existence of the action of "no pressure at 1 bus", by starting the action recording, the input and output of the standby self-injection and the intermediate monitoring point can be recorded and obtained, so that Perform failure analysis. In addition, the menu setting of this scene can also start the wave recording of scenes 1 and 2, that is, no matter whether the traditional fault wave recording can be started or not, as long as there is an action of "no pressure on 1 bus", the action wave recording can be started, and then the wave recording can be recorded. And check the input and output of the standby automatic switch, as well as the intermediate monitoring point.

Scenario 4: When the voltage, current, and binary input meet the operation conditions of the standby automatic switch, but the standby automatic switch does not jump 1DL, the "1 bus no voltage" has no action, but the voltage of 1 bus suddenly drops by 11V.

In the wave recording menu structure setting, select "choose action wave recording" and "choose disturbance wave recording", and set "disturbance wave recording voltage sudden change starting value" to 10V.

For this scenario, the traditional fault recording cannot be started because there is no exit action for the standby auto-injection, and the action recording cannot be started because there is no action for "1 Bus No Voltage". Disturbance recording not only records and obtains the action process of the conventional standby automatic input and output (corresponding to monitoring points 1-16), but also records and obtains the action process of the intermediate monitoring points 17-20, in which the intermediate monitoring points 19 and 20 is the timing of the counter.

In addition, the menu settings of this scene can also start the wave recording of scenes 1 to 3. For example: in scenario 3, when the action of "no voltage on 1 bus", that is, the voltage changes from 57.7V to 0V, and the voltage mutation amount of 57.7V is greater than the 10V excitation of "disturbance recording voltage mutation amount start value", the excitation will inevitably start the disturbance Wave recording; although there is no exit action for the standby automatic switch in scene 2 and scene 1, and the traditional fault wave recording is not started, but as long as the sudden change in the disturbance wave recording voltage is greater than the start-up setting value, the disturbance wave recording can be started, and it can be recorded and Obtain the input and output of standby automatic switching, as well as the intermediate monitoring point, so that fault analysis can be carried out.

Based on the above scenarios, it can be seen that the disturbance wave recording described in the present invention is easier to operate than the action wave recording, and the action wave recording is easier to operate than the traditional fault wave recording; this means that the disturbance wave recording covers the action wave recording, and the action wave recording covers Traditional fault recording; that is, the start-up frequency of the disturbance recorder described in the present invention is higher than that of the action recorder, and the start-up frequency of the action recorder is higher than that of the traditional fault recorder.

In addition, the present invention also provides an excitation wave recording system, which includes a disturbance wave recording module and an action wave recording module.

The disturbance recording module is used to record the current instantaneous value and voltage instantaneous value before, during and after the specified excitation occurs according to the time interval and COMTRADE format when the excitation specified by the disturbance recording occurs. At the same time, record the value of binary input, binary output, and virtual remote signal during this period, and record the variable values of all intermediate monitoring points related to the working logic of the protection function put into operation during this period, including the value of the counter Timing; the binary input refers to the input switching value, if there is a binary input, it is "1", and if there is no binary input, it is "0"; the binary output refers to the output switching value, if there is a binary output The output is "1", and it is "0" if there is no binary output; the virtual remote signal is expressed as the logic value of the binary input, and it is "1" if there is a virtual remote signal input, and it is "1" if there is no virtual remote signal input. "0"; the excitation of the disturbance recording is that the input current or voltage mutation exceeds the set start value of the disturbance recording mutation, or the binary input, binary output, and virtual remote signal change; the said The sudden change refers to the change value of the input current or voltage.

The action wave recording module is used for when the excitation specified by the action wave recording occurs, the relay protection device records the current instantaneous value and the voltage instantaneous value before, during, and after the specified excitation occurs according to the time interval and in accordance with the COMTRADE format At the same time, record the value of binary input, binary output, and virtual remote signal during this period, and record the variable values of all intermediate monitoring points related to the working logic of the protection function put into operation during this period, including the value of the counter Timing; the binary input refers to the input switching value, if there is a binary input, it is "1", and if there is no binary input, it is "0"; the binary output refers to the output switching value, if there is a binary output The output is "1", and it is "0" if there is no binary output; the virtual remote signal is expressed as the logic value of the binary input, and it is "1" if there is a virtual remote signal input, and it is "1" if there is no virtual remote signal input. "0"; the excitation of the action wave recording is that the fixed value corresponding to the protection function put into operation satisfies the action condition.

Claims (7)

1. an excitation wave recording method, is characterized in that, described excitation wave recording comprises disturbance wave recording and action wave recording; The excitation wave recording means that when the specified excitation occurs, the relay protection device records the current instantaneous value and voltage instantaneous value before, during, and after the specified excitation occurs according to the time interval and in accordance with the COMTRADE format, and simultaneously records During this period, the value of the input quantity, the value of the binary output quantity, the value of the virtual remote signal, and the variable values of all intermediate monitoring points related to the working logic of the protection function put into operation during this period, including the timing of the counter; The input value refers to the switching value of the input, and it is "1" if there is a binary input, and "0" if there is no binary input; the binary output refers to the switching value of the output, and it is "1" if there is a binary output ", it is "0" if there is no binary output; the virtual remote signal is expressed as the logic value of the binary input, if there is a virtual remote signal input, it is "1", and if there is no virtual remote signal input, it is "0"; The excitation of the disturbance recording is that the sudden change of the input current or voltage exceeds the set start-up value of the disturbance recording sudden change, or the binary input, binary output and virtual remote signal change; the sudden change refers to the input Changes in current or voltage; The excitation of action wave recording is that the fixed value corresponding to the protection function put into operation satisfies the action condition. 2. The excitation wave recording method according to claim 1, characterized in that, the excitation wave recording method performs function selection through the wave recording menu, and the function selection is selected and set by the display panel and the keyboard of the relay protection device, Said function selection or setting through computer communication; The wave recording menu includes two levels. The excitation wave recording menu option is set in the first level menu, and the action wave recording function option, the disturbance wave recording function option, and the disturbance wave recording current mutation amount start constant value setting are set in the second level menu. option, start-up constant value setting option of disturbance wave recording voltage mutation; Complete the corresponding excitation wave recording by selecting the action wave recording function option, the disturbance wave recording function option, and setting the starting value of the disturbance wave recording current sudden change value and the disturbance wave recording voltage sudden change start value, and correspondingly in the relay protection device Save the selected recording. 3. The excitation wave recording method according to claim 1, characterized in that, the disturbance wave recording, the action wave recording, and the fault wave recording are located in different storage areas in the relay protection device, and the priority of storage increases successively . 4. The excitation wave recording method according to claim 3, characterized in that the priority of uploading the disturbance wave recording, action wave recording, and fault wave recording to the background server is sequentially increased. 5. An excitation wave recording system, characterized in that, comprises a disturbance wave recording module and an action wave recording module; The disturbance wave recording module is used to record the current instantaneous value and voltage before, during, and after the specified excitation occurs according to the time interval and in accordance with the COMTRADE format when the excitation specified by the disturbance wave recording occurs. Instantaneous value, while recording the value of binary input, binary output, and virtual remote signal during this period, and recording the variable values of all intermediate monitoring points related to the working logic of the protection function put into operation during this period, including The timing of the counter; the binary input refers to the input switching value. If there is a binary input, it is "1", and if there is no binary input, it is "0"; the binary output refers to the output switching value. Output output is "1", and no output is "0"; the virtual remote signal is expressed as the logic value of binary input, and virtual remote signal input is "1", and virtual remote signal input is "1". Then it is "0"; the excitation of the disturbance recording is that the input current or voltage sudden change exceeds the set start value of the disturbance recording sudden change, or the binary input, binary output, and virtual remote signal change; The sudden change refers to the change value of the input current or voltage; The action wave recording module is used to record the current instantaneous value and voltage before, during, and after the specified excitation occurs according to the time interval and COMTRADE format when the excitation specified by the action wave recording occurs. Instantaneous value, while recording the value of binary input, binary output, and virtual remote signal during this period, and recording the variable values of all intermediate monitoring points related to the working logic of the protection function put into operation during this period, including The timing of the counter; the binary input refers to the input switching value. If there is a binary input, it is "1", and if there is no binary input, it is "0"; the binary output refers to the output switching value. Output output is "1", and no output is "0"; the virtual remote signal is expressed as the logic value of binary input, and virtual remote signal input is "1", and virtual remote signal input is "1". Then it is "0"; the excitation of action wave recording is that the fixed value corresponding to the protection function put into operation satisfies the action condition. 6. A computer device comprising a memory, a processor, and a computer program stored on the memory and operable on the processor, wherein claims 1 to 4 are realized when the processor executes the computer program The steps of any one of the described methods. 7. A computer-readable storage medium, on which a computer program is stored, characterized in that, when the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 4 are implemented.

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