CN113466584A

CN113466584A - Fault diagnosis positioning method for monitoring tripping and closing

Info

Publication number: CN113466584A
Application number: CN202110692723.2A
Authority: CN
Inventors: 许尧; 许旵鹏; 于和林; 刘显祖; 张�浩; 穆云龙; 陈知丰; 陈茜
Original assignee: Overhaul Branch of State Grid Anhui Electric Power Co Ltd
Current assignee: Overhaul Branch of State Grid Anhui Electric Power Co Ltd
Priority date: 2021-06-22
Filing date: 2021-06-22
Publication date: 2021-10-01
Anticipated expiration: 2041-06-22
Also published as: CN113466584B

Abstract

The embodiment of the invention provides a fault diagnosis and positioning method for monitoring tripping and closing, belonging to the technical field of power grids. The fault diagnosis positioning method comprises the following steps: judging whether a starting signal of the protection device is received or not; under the condition that the starting signal of the protection device is judged to be received, an action MMS signal is obtained; judging whether the action MMS signal is received or not; acquiring a switch GOOSE signal under the condition of judging that the action MMS signal is received; the invention provides a trip and switch monitoring fault diagnosis positioning method, which monitors a trip and switch GOOSE signal, an intelligent terminal trip and switch reverse correction GOOSE signal, an extraction confirmation signal and a breaker position GOOSE signal through a trip and switch monitoring reference template, and carries out fault diagnosis and positioning by judging the displacement state and the displacement time of each signal, thereby reducing the workload of troubleshooting of operators and improving the troubleshooting efficiency.

Description

Fault diagnosis positioning method for monitoring tripping and closing

Technical Field

The invention relates to the technical field of power grids, in particular to a fault diagnosis and positioning method for monitoring tripping and closing.

Background

The intelligent substation protection device is different from a traditional substation protection device tripping and closing action electric signal output mode, the protection device in the intelligent substation trips and closes to output GOOSE signals, and therefore an intelligent terminal intermediate conversion link is added in a tripping and closing loop from the protection device to a circuit breaker. When a complete trip switch is performed, it is required to ensure that a trip switch GOOSE signal is sent from the protection device, the signal is correctly sent and received in each step from the intelligent terminal to the circuit breaker, and the action time is within the required range. In the process of tripping and closing, by collecting related GOOSE and MMS signals in the process of tripping and closing, a tripping and closing loop can be monitored, and the occurrence sequence and time of events can be verified.

However, the currently applied trip and closing circuit monitoring method is only limited to monitoring related GOOSE and MMS signals in the procedures of trip and closing, reverse calibration, confirmation and the like, no excessive attention is paid to diagnosis, analysis and positioning of fault conditions when a fault occurs in a field trip and closing circuit, field fault troubleshooting still needs to repeatedly check optical port power, optical fiber on-off, pressing plate on-off and the like, the difficulty of fault troubleshooting is greatly increased, and the fault troubleshooting efficiency is reduced.

Disclosure of Invention

The embodiment of the invention aims to provide a fault diagnosis and positioning method for monitoring tripping and closing, which is used for solving the problem of inconvenient fault diagnosis and positioning of a tripping and closing loop.

In order to achieve the above object, an embodiment of the present invention provides a fault diagnosis and location method for monitoring tripping and closing, including:

judging whether a starting signal of the protection device is received or not;

under the condition that the starting signal of the protection device is judged to be received, an action MMS signal is obtained;

judging whether the action MMS signal is received or not;

acquiring a switch GOOSE signal under the condition of judging that the action MMS signal is received;

judging whether the tripping and closing GOOSE signals are received or not;

under the condition that the tripping and closing GOOSE signal is received, judging whether the tripping and closing GOOSE signal is displaced or not;

under the condition that the tripping and closing GOOSE signal is judged not to be displaced, the tripping and closing GOOSE signal is determined to be lost, and whether the networking optical power of the protection device exceeds a lower limit and/or whether a link breaking alarm of the protection device exists or not is judged;

determining that the optical fiber or the optical module has a fault under the condition of judging that the networking optical power of the protection device is lower and/or monitoring the link failure alarm of the protection device;

judging the state of a GOOSE outlet pressure plate of the protection device under the condition that the networking optical power of the protection device is judged not to exceed the lower limit and the protection device has no chain breakage alarm;

determining that the protection device has logic and setting faults under the condition that the GOOSE outlet pressure plate of the protection device is judged to be in a putting state;

under the condition that the protection device GOOSE outlet pressure plate is judged not to be in the input state, determining that the protection device is in the state that the pressure plate is not input;

and judging abnormal wave recording of the protection device under the condition that the action MMS signal is not received.

Optionally, under the condition that the action MMS signal is judged to be received, the tripping and closing GOOSE signal is acquired;

judging whether the tripping and closing GOOSE signals are received or not;

under the condition that the tripping and closing GOOSE signals are judged not to be received, acquiring a tripping and closing anti-correction GOOSE signal of the intelligent terminal;

judging whether a GOOSE (generic object oriented substation event) signal for preventing tripping and closing of the intelligent terminal is received or not;

under the condition that the intelligent terminal tripping and closing anti-correction GOOSE signal is judged to be received, judging that the tripping and closing GOOSE signal is lost and/or the phase sequence is wrong;

acquiring a back-sampling confirmation GOOSE signal under the condition that the anti-correction GOOSE signal of the tripping and closing of the intelligent terminal is judged not to be received;

judging whether the GOOSE signal is received or not;

judging whether the GOOSE signal is lost or not and/or the phase sequence error is corrected or not under the condition that the GOOSE signal is judged to be received;

acquiring a GOOSE signal of the position of the circuit breaker under the condition that the goaf signal is judged not to be received;

judging whether a GOOSE signal of the position of the circuit breaker is received or not;

and under the condition that the GOOSE signal of the position of the circuit breaker is received, judging that the situations of signal loss and/or phase sequence error exist in the tripping and closing GOOSE signal, the intelligent terminal tripping and closing reverse correction GOOSE signal and/or the stoping confirmation GOOSE signal.

Optionally, under the condition that the tripping and closing GOOSE signal is received, judging whether the tripping and closing GOOSE signal is displaced;

judging whether the displacement state of the tripping and closing GOOSE signal is correct or not under the condition of judging that the tripping and closing GOOSE signal is displaced;

under the condition that the displacement state of the tripping and closing GOOSE signal is judged to be correct, judging whether the displacement time of the tripping and closing GOOSE signal is within a standard threshold value or not;

under the condition that the displacement time of the tripping and closing GOOSE signal is judged not to be within a standard threshold value, judging that the displacement time of the tripping and closing GOOSE signal exceeds the range;

and under the condition that the displacement state of the tripping and closing GOOSE signal is judged to be incorrect, judging that the signal of the tripping and closing GOOSE signal is unexpected.

Optionally, under the condition that the displacement time of the trip and switch-on GOOSE signal is judged to be within a standard threshold, obtaining a trip and switch-on anti-correction GOOSE signal of the intelligent terminal;

under the condition that the intelligent terminal tripping and closing anti-correction GOOSE signal is judged to be received, whether the intelligent terminal tripping and closing anti-correction GOOSE signal is displaced or not is judged again;

under the condition that the intelligent terminal tripping and closing anti-correction GOOSE signal is judged not to be displaced, judging whether the networking optical power of the intelligent terminal is lower and/or whether the intelligent terminal is in a broken link alarm condition;

determining that the optical fiber or the optical module has a fault when judging that the networking optical power of the intelligent terminal is lower and/or the intelligent terminal is in a broken link alarm state;

under the condition that the networking optical power of the intelligent terminal is judged not to exceed the lower limit and the intelligent terminal link breakage alarm does not exist, judging whether the direct jump optical power of the intelligent terminal exceeds the lower limit and/or whether the link breakage alarm of a direct jump optical port exists or not;

judging whether the lower limit of the direct jump optical power of the intelligent terminal is exceeded and/or a direct jump optical port broken link alarm exists, and judging whether the direct jump optical port broken link fault exists;

judging whether the connection configuration of the intelligent terminal trip-close GOOSE virtual terminal has errors or not under the condition that the intelligent terminal straight trip optical power does not exceed the lower limit and no straight trip optical port broken link alarm exists;

determining a fault of the virtual terminal under the condition that the GOOSE virtual terminal connection configuration of the intelligent terminal is judged to be incorrect;

and determining the reverse correction message output logic fault of the intelligent terminal under the condition of judging that the connection configuration of the GOOSE virtual terminal of the intelligent terminal is correct.

Optionally, under the condition that the intelligent terminal tripping and closing anti-correction GOOSE signal is judged to be received, judging whether the intelligent terminal tripping and closing anti-correction GOOSE signal is shifted or not;

under the condition that the intelligent terminal tripping and closing anti-correction GOOSE signal is judged to be displaced, judging whether the displacement state of the intelligent terminal tripping and closing anti-correction GOOSE signal is correct or not;

under the condition that the deflection state of the intelligent terminal tripping and closing anti-correction GOOSE signal is judged to be correct, judging whether the deflection time of the intelligent terminal tripping and closing anti-correction GOOSE signal is within a standard threshold value or not;

under the condition that the displacement time of the intelligent terminal tripping and closing anti-correction GOOSE signal is judged not to be within a standard threshold value, judging that the displacement time of the intelligent terminal tripping and closing anti-correction GOOSE signal exceeds the range;

and under the condition that the deflection state of the intelligent terminal tripping and closing anti-correction GOOSE signal is judged to be incorrect, judging that the signal of the intelligent terminal tripping and closing anti-correction GOOSE signal is unexpected.

Optionally, under the condition that the displacement time of the intelligent terminal tripping and closing reverse correction GOOSE signal is judged to be within a standard threshold, acquiring a back sampling confirmation GOOSE signal;

judging whether the GOOSE signal is displaced or not under the condition of judging that the GOOSE signal is received;

judging whether the intelligent terminal operation loop normally supplies power or not under the condition that the GOOSE signal is judged to be not displaced by the back-mining confirmation;

when the monitoring power supply of the intelligent terminal operation loop is judged to be normal, determining that the output logic fault of the intelligent terminal exit confirmation message;

and determining the fault of the operation loop under the condition that the monitoring power supply of the intelligent terminal operation loop is not supplied.

Optionally, in a case that it is determined that the gather confirmation GOOSE signal is received, determining whether the gather confirmation GOOSE signal is shifted;

judging whether the displacement state of the stoping confirmation GOOSE signal is correct or not under the condition of judging the displacement of the stoping confirmation GOOSE signal;

under the condition that the position change state of the GOOSE signal is judged to be correct, judging whether the position change time of the GOOSE signal is within a standard threshold value or not;

judging that the displacement time of the stoping confirmation GOOSE signal exceeds the range under the condition that the displacement time of the stoping confirmation GOOSE signal is judged not to be within a standard threshold;

and under the condition that the displacement state of the stoping confirmation GOOSE signal is judged to be incorrect, judging that the signal of the stoping confirmation GOOSE signal is unexpected.

Optionally, under the condition that the displacement time of the goase signal is judged to be within a standard threshold, obtaining a breaker position goase signal;

judging whether the GOOSE signal at the position of the circuit breaker generates displacement or not under the condition of judging that the GOOSE signal at the position of the circuit breaker is received;

under the condition that the GOOSE signal at the position of the circuit breaker is judged not to be displaced, judging whether the power supply of the access board is normal or not;

determining the external wiring fault of the switching board at the position of the intelligent terminal switch under the condition of judging that the power supply of the switching board power supply is normal;

and determining the power supply wiring fault under the condition that the power supply of the switch-in board power supply is abnormal.

Optionally, in a case that it is determined that the GOOSE signal of the breaker position is received, determining whether the GOOSE signal of the breaker position is shifted;

judging whether the displacement state of the GOOSE signal at the position of the circuit breaker is correct or not under the condition of judging the displacement of the GOOSE signal at the position of the circuit breaker;

under the condition that the displacement state of the GOOSE signal at the position of the circuit breaker is judged to be correct, judging whether the displacement time of the GOOSE signal at the position of the circuit breaker is within a standard threshold value;

under the condition that the displacement time of the GOOSE signal at the position of the circuit breaker is judged not to be within a standard threshold value, judging that the displacement time of the GOOSE signal at the position of the circuit breaker exceeds a range;

under the condition that the displacement time of the GOOSE signal at the position of the circuit breaker is judged to be within a standard threshold value, judging that a tripping and closing loop is normal;

and under the condition that the deflection state of the GOOSE signal of the circuit breaker position is judged to be incorrect, judging that the signal of the GOOSE signal of the circuit breaker position is unexpected.

Optionally, the trip gate GOOSE signal includes a start failure signal.

According to the technical scheme, the trip and switch monitoring fault diagnosis positioning method provided by the invention has the advantages that the trip and switch monitoring reference template is used for monitoring a trip and switch GOOSE signal, an intelligent terminal trip and switch anti-correction GOOSE signal, a recovery confirmation signal and a breaker position GOOSE signal, and fault diagnosis and positioning are carried out by judging the displacement state and displacement time of each signal, so that the workload of troubleshooting of operators is reduced, and the troubleshooting efficiency is improved.

Additional features and advantages of embodiments of the invention will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the embodiments of the invention without limiting the embodiments of the invention. In the drawings:

fig. 1 is a partial diagnostic positioning flowchart of a fault diagnosis positioning method for monitoring tripping and closing according to an embodiment of the invention;

fig. 2 is a flowchart illustrating a diagnosis positioning process of a reverse correction GOOSE signal of an intelligent terminal for tripping and closing in a fault diagnosis positioning method for monitoring tripping and closing according to an embodiment of the present invention;

fig. 3 is a flowchart of diagnosing and locating a back-picking acknowledge GOOSE signal in a fault diagnosing and locating method for monitoring tripping and closing according to an embodiment of the present invention;

fig. 4 is a flowchart illustrating the diagnosis and location of the GOOSE signal of the breaker position in a fault diagnosis and location method for monitoring tripping and closing according to an embodiment of the present invention;

fig. 5 is a flow chart of signal acquisition and diagnosis in a fault diagnosis positioning method for monitoring tripping and closing according to an embodiment of the invention;

FIG. 6 is a flow diagram of a complete diagnostic location of a trip and close monitoring fault diagnostic location method according to an embodiment of the present invention;

fig. 7 is an exemplary diagram of a trip monitoring reference template in a fault diagnosis positioning method for trip monitoring according to an embodiment of the present invention.

Detailed Description

The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating embodiments of the invention, are given by way of illustration and explanation only, not limitation.

A fault diagnosis positioning method for monitoring tripping and closing is realized based on an intelligent wave recording system, and the intelligent wave recording system is a system known by people in the field. The intelligent wave recording system comprises a management unit, an acquisition unit and an exchanger, wherein the management unit is connected with a station control layer network exchanger of the intelligent transformer substation through the exchanger and is used for monitoring and acquiring a starting signal of a protection device and an action signal of the protection device. The acquisition unit is connected with the intelligent substation process layer network through optical fibers and is used for monitoring and acquiring a tripping and closing GOOSE signal of the protection device, an intelligent terminal tripping and closing anti-correction GOOSE signal, a back-picking confirmation GOOSE signal and a breaker position GOOSE signal. The acquisition unit communicates with the management unit through the switch, and can transmit signals on the acquisition unit to the management unit.

The method comprises the steps of establishing a tripping and closing monitoring reference template in a management unit, monitoring and obtaining a starting signal, an action MMS signal, a tripping and closing GOOSE signal, an intelligent terminal tripping and closing anti-correction GOOSE signal, an extraction confirmation GOOSE signal and a breaker position GOOSE signal of a protection device, wherein the difference value between the tripping and closing GOOSE signal, the intelligent terminal tripping and closing anti-correction GOOSE signal, the extraction confirmation GOOSE signal and the breaker position GOOSE signal deflection time and the protection device starting signal is called deflection time, setting a standard threshold value of the deflection time of the signals, and setting a reference state of the deflection state of the signals. The tripping and closing monitoring reference template is well known to those skilled in the art, the displacement time of each signal in the tripping and closing reference template can be manually set, and an operator can set the standard threshold of the corresponding displacement time of each signal according to the actual situation of the intelligent substation, so that the standard threshold can be compared with the actually monitored displacement time, and the diagnosis and the positioning of subsequent faults are facilitated.

Fig. 1 is a partial diagnostic positioning flowchart of a fault diagnosis positioning method for monitoring tripping and closing according to an embodiment of the present invention. In fig. 1, the fault diagnosis positioning method may include:

in step S10, it is determined whether a protection device activation signal is received. Wherein the protection device activation signal may indicate whether the protection device is activated. Specifically, it may be that the start signal of the protection device is monitored in the station level network, the start signal of the protection device is transmitted to the management unit, and the start signal of the protection device is monitored by reading the MMS message.

In step S11, when it is determined that the protection device activation signal is received, it is determined whether or not an operation MMS signal is received. The protection device can be determined to be normally started under the condition that a protection device starting signal message is read, the protection device can send an action MMS signal after the protection device is normally started, and whether the protection device is normally recorded is judged by monitoring the protection device starting signal and the protection device action MMS signal. Specifically, the station control layer network may monitor an operation MMS signal of the protection device, transmit the operation MMS signal to the management unit, and monitor the operation MMS signal of the protection device by reading an MMS message.

In step S110, when it is determined that the operation MMS signal has not been received, it is determined that the protection device is performing abnormal recording. Wherein, after the protection device sends out the starting signal, the action signal is not necessarily sent out. The return may be resumed immediately after startup or may be initiated after a delay after startup. Normally, when a protection device start signal and a protection device operation MMS signal are received at the same time, it is described that the protection device is performing fault operation recording. Otherwise, when the message of the protection device action MMS signal is not read, the protection device does not send out the action MMS signal, namely the protection device does not carry out fault action wave recording, and the abnormal wave recording of the protection device is judged.

In step S12, when it is determined that the operation MMS signal is received, it is determined whether or not the trip gate GOOSE signal is received. When a protection device starting signal and a protection device action MMS signal are received at the same time, the fault action recording is performed by the protection device. In order to further determine the location of the fault, the trip gate GOOSE signal needs to be monitored and diagnosed. Specifically, when an action MMS signal message of the protection device is read, and within a time range from the first 3 seconds to the last 10 seconds of starting, a trip-and-close GOOSE signal of the protection device is obtained through the process layer network, the acquisition unit acquires the GOOSE message through the switch, and transmits the acquired signal to the management unit through the switch.

In step S13, when it is determined that the trip gate GOOSE signal is received, it is determined whether the trip gate GOOSE signal is displaced. When the tripping and closing GOOSE signals are received, the tripping and closing GOOSE signals in the tripping and closing loop are indicated to work. However, in order to determine whether the trip gate GOOSE signal is operating normally, the trip gate GOOSE signal needs to be further diagnosed as to whether the trip gate GOOSE signal is shifted or not. Specifically, the OFF-to-ON displacement state of the trip and close GOOSE signal may be obtained at the same time when the message of the trip and close GOOSE signal of the protection device is read.

In step S130, when it is determined that the trip gate GOOSE signal is not shifted, it is determined that the trip gate GOOSE signal is lost. The trip and switch GOOSE signal is not shifted, which indicates that the trip and switch GOOSE signal does not work normally. Namely, the tripping and closing loop has faults, so that the tripping and closing GOOSE signals are lost.

In step S131, it is determined whether the lower limit of the protection device networking optical power exists and/or whether a protection device link down alarm exists. When the situation that the tripping and closing GOOSE signal is not displaced is judged, whether a fault exists in a transmission loop of the tripping and closing GOOSE signal needs to be checked preferentially, and the tripping and closing GOOSE signal can be transmitted normally only if the condition that the transmission process of the tripping and closing GOOSE signal is normal is guaranteed. Therefore, the networking optical port of the protection device and the optical fiber link need to be checked.

In step S132, it is determined that the optical fiber or the optical module has a fault when the lower limit of the networking optical power of the protection device is determined and/or the protection device link failure alarm is monitored. If the optical power of the optical port is lower, that is, the optical fiber or the optical module is damaged, and the signal cannot be monitored due to the damage of the optical fiber or the optical module, the optical fiber link needs to be recovered to recover the monitoring of the trip-and-close GOOSE signal.

In step S133, when it is determined that the networking optical power of the protection device does not exceed the lower limit and the protection device has no chain breakage alarm, the state of the GOOSE outlet pressing plate of the protection device is determined. If the networking power of the protection device does not exceed the lower limit and the link breaking alarm does not exist, the condition that the optical fiber link is normal is indicated, and the signal can be normally transmitted and monitored, so that the situation that the protection device does not output the displacement of the tripping and closing GOOSE signal can be judged. However, in order to determine the specific fault location of the trip gate GOOSE signal, further diagnosis needs to be performed on the trip gate GOOSE signal. Specifically, in the prior art, it may be a diagnosis of the state of the GOOSE outlet pressure plate of the protection device.

In step S134, in the case where it is judged that the GOOSE outlet platen of the protection device is in the thrown state, it is determined that there is a logic and setting failure of the protection device. If it is determined that the GOOSE outlet platen of the protection device is in the on state, which indicates that there is no problem with the GOOSE outlet platen of the protection device, there may be an error in the logic and setting of the protection device, and therefore there is a need for further protection of the logic and setting of the protection device, which may be well known to those skilled in the art.

In step S135, when it is judged that the GOOSE outlet platen is not in the thrown state, it is determined that the protection device is in the state where the platen is not thrown. If the situation that the protection device GOOSE outlet pressure plate is in the non-input state is determined, the situation shows that the protection device does not output the switch-off GOOSE signal deflection caused by the fact that the protection device GOOSE outlet pressure plate is not input. Then, a corresponding pressing plate needs to be input to ensure that the protection device can normally output the deflection of the trip and close GOOSE signal.

In step S14, when it is determined that the trip/close GOOSE signal has been displaced, it is determined whether the displacement state of the trip/close GOOSE signal is correct. And when the tripping and closing signal is judged to be displaced, the networking optical port, the optical fiber link and the GOOSE outlet pressure plate of the protection device are normal. However, in order to determine whether the trip gate GOOSE signal is operating normally, the trip gate GOOSE signal needs to be further diagnosed to determine whether the displacement state is correct.

In step S140, when the displacement state of the trip gate GOOSE signal is determined to be incorrect, it is determined that the trip gate GOOSE signal is not expected. If the deflection state of the trip and close GOOSE signal is incorrect, the deflection state of the trip and close GOOSE signal is inconsistent with the preset value.

In step S15, when the displacement state of the trip/close gate GOOSE signal is determined to be correct, it is determined whether the displacement time of the trip/close gate GOOSE signal is within the standard threshold. If the trip and close GOOSE signal is correct in displacement state, the trip and close GOOSE signal is consistent with the preset displacement state. However, in order to determine whether the trip gate GOOSE signal is operating normally, the trip gate GOOSE signal needs to be further diagnosed whether the displacement time is normal or not. Specifically, the shift time of the trip and close GOOSE signal may be recorded at the same time when the message of the trip and close GOOSE signal of the protection device is read, and the difference between the shift time of the trip and close GOOSE signal and the start signal time may be calculated and compared with the standard threshold set in the trip and close monitoring reference template.

In step S150, when it is determined that the displacement time of the trip/close GOOSE signal is not within the standard threshold, it is determined that the displacement time of the trip/close GOOSE signal exceeds the range. If the displacement time of the trip and close GOOSE signal is not within the standard threshold, the situation that the displacement time of the trip and close GOOSE signal is inconsistent with the preset displacement time is shown.

The start signal of the protection device and the action MMS signal of the protection device are monitored through a station control layer network, and the switch-off GOOSE signal of the protection device is monitored through a process layer network. After the protection device sends the starting signal, the action signal is not necessarily sent, the protection device may recover and return immediately after the starting, or the protection device may start to act after a delay after the starting, so that abnormal recording can be determined when the MMS message of the action MMS signal of the protection device cannot be read. And under the condition that the starting signal of the protection device and the action MMS signal of the protection device are both acquired, further judging the tripping and closing GOOSE signal of the protection device, and sequentially judging whether the tripping and closing GOOSE signal is acquired, whether the displacement occurs, whether the displacement is correct and whether the displacement time is within a standard threshold value. When the trip-switch GOOSE signal is acquired and the trip-switch GOOSE signal is not displaced, it is determined that the signal is lost, it is necessary to determine whether the lower limit of the optical power is generated at the networking port of the protection device and the connection port corresponding to the switch, and if the lower limit of the optical power is generated at the optical port, the optical fiber or the optical module is damaged, and the optical fiber link needs to be recovered. If the alarm is not beyond the lower limit, whether the protection device has a chain breakage alarm needs to be monitored. If the protection device has no chain breakage alarm, the protection device does not output a trip and close GOOSE signal deflection, and the state of a GOOSE outlet pressure plate of the protection device also needs to be monitored. If the GOOSE outlet pressure plate of the protection device is in a non-input state, the corresponding pressure plate needs to be input; if the protection device is in the activated state, the logic and settings of the protection device, which are well known to those skilled in the art, need to be further checked. If there is a problem with the protection device logic and settings, the logic and settings need to be re-checked to restore them to normal settings. When the trip and close GOOSE signal is shifted and the shifted state of the trip and close GOOSE signal is incorrect, the trip and close GOOSE signal is not expected. When the position change state of the trip and close GOOSE signal is correct and the position change time of the trip and close GOOSE signal is not within the standard threshold value, the position change time of the trip and close GOOSE signal exceeds the range. Through multiple diagnosis of the switch-off GOOSE signals, the faults can be accurately positioned, and the fault processing efficiency of operators is improved.

In the tripping and closing loop, if the tripping cannot be normally carried out, a starting failure signal can be generated; if the system can be normally tripped, no failure signal is started. If the starting failure signals exist, the starting failure signals can be divided into groups individually, and can also be classified into corresponding groups for monitoring and analysis. The diagnosis positioning step of the starting failure signal is consistent with the diagnosis positioning step of the tripping and closing GOOSE signal.

Fig. 2 is a flowchart of diagnosing and positioning a GOOSE signal in a trip and closing monitoring fault diagnosis and positioning method for an intelligent terminal in accordance with an embodiment of the present invention. In fig. 2, the fault diagnosis positioning method may include:

in step S20, when the displacement time of the trip/close GOOSE signal is determined to be within the standard threshold, the trip/close calibration GOOSE signal of the intelligent terminal is obtained. If the displacement time of the trip and close GOOSE signal is within the standard threshold value, the trip and close GOOSE signal is normal in work. In order to further determine the position of the fault, the intelligent terminal tripping and closing anti-GOOSE signal needs to be monitored and diagnosed. Specifically, within the time range from the first 3 seconds to the last 10 seconds of the start, the GOOSE signal for preventing the intelligent terminal of the protection device from tripping and closing is acquired through the process layer network, the GOOSE message is acquired by the acquisition unit through the switch, and the acquired signal is transmitted to the management unit through the switch.

In step S21, when it is determined that the smart terminal trip/close anti-correction GOOSE signal is received, it is determined again whether the smart terminal trip/close anti-correction GOOSE signal is shifted. When the intelligent terminal tripping and closing anti-correction GOOSE signal is received, the intelligent terminal tripping and closing anti-correction GOOSE signal in the tripping and closing loop is indicated to work. However, in order to determine whether the reverse-correction GOOSE signal for the tripping and closing of the intelligent terminal is working normally, the reverse-correction GOOSE signal for the tripping and closing of the intelligent terminal needs to be further diagnosed as to whether the displacement is changed. Specifically, the OFF-to-ON displacement state of the intelligent terminal trip and close anti-correction GOOSE signal may be obtained at the same time when the message of the intelligent terminal trip and close anti-correction GOOSE signal is read.

In step S210, when it is determined that the GOOSE signal is not shifted, it is determined whether the networking optical power of the intelligent terminal is lower and/or whether an alarm for breaking the link of the intelligent terminal exists. The intelligent terminal tripping and closing anti-correction GOOSE signal is not shifted, and the situation that the intelligent terminal tripping and closing anti-correction GOOSE signal does not work normally is shown, namely, a tripping and closing loop has a fault. However, in order to determine the specific fault location of the intelligent terminal trip and closing anti-correction GOOSE signal, further diagnosis needs to be performed on the intelligent terminal trip and closing anti-correction GOOSE signal. Specifically, in the prior art, the diagnosis process may be to diagnose the networking optical port of the intelligent terminal and the optical fiber link of the intelligent terminal.

In step S211, it is determined that the optical fiber or the optical module has a fault when it is determined that the lower limit of the networking optical power of the intelligent terminal exists and/or the intelligent terminal has a chain break alarm. If the optical port has the lower limit of optical power and/or has the intelligent terminal chain breakage alarm, which indicates that the optical fiber or the optical module is damaged, and the signal cannot be monitored due to the damage of the optical fiber or the optical module, the optical fiber link needs to be recovered to recover the monitoring of the intelligent terminal switch-on and switch-off anti-correction GOOSE signal.

In step S212, under the condition that it is determined that the networking optical power of the intelligent terminal is not over the lower limit and the intelligent terminal link down alarm does not exist, it is determined whether the direct jump optical power of the intelligent terminal is over the lower limit and/or whether the link down alarm of the direct jump optical port exists. If the networking power of the protection device does not go beyond the lower limit and no chain breakage warning exists, the fact that the optical fiber link is normal is indicated, and signals can be transmitted normally and monitored. However, in order to determine the specific fault location of the intelligent terminal trip and closing anti-correction GOOSE signal, further diagnosis needs to be performed on the intelligent terminal trip and closing anti-correction GOOSE signal. Specifically, in the prior art, the diagnosis process may be to diagnose the intelligent terminal straight-jump optical port and the optical fiber link of the straight-jump optical port.

In step S213, when it is determined that the lower limit of the direct jump optical power of the intelligent terminal exists and/or a direct jump optical port link failure alarm exists, a direct jump optical port link failure occurs. If the situation that the optical power of the straight light-jumping port is lower than the lower limit and/or the link breaking warning exists, the intelligent terminal cannot identify the switch-on and switch-off GOOSE signal sent by the protection device, and then the intelligent terminal switch-on and switch-off anti-correction GOOSE signal cannot be sent, and the optical fiber link needs to be recovered so as to recover the identification of the switch-on and switch-off GOOSE signal.

In step S214, when it is determined that the lower limit of the intelligent terminal direct jump optical power is not exceeded and there is no direct jump optical port link breaking alarm, it is determined whether there is an error in the connection configuration of the virtual terminal of the intelligent terminal trip switch GOOSE. If the intelligent terminal straight jump optical power does not cross the lower limit and the straight jump optical port broken link alarm does not exist, it is indicated that the intelligent terminal straight jump optical port optical fiber link is normal, and the signal can be transmitted normally and monitored. However, in order to determine the specific fault location of the intelligent terminal trip and closing anti-correction GOOSE signal, further diagnosis needs to be performed on the intelligent terminal trip and closing anti-correction GOOSE signal. Specifically, in the prior art, the diagnosis process may be to diagnose the connection configuration of the virtual terminal of the intelligent terminal trip gate GOOSE.

In step S215, when it is determined that the GOOSE virtual terminal connection configuration is incorrect, a virtual terminal fault is determined. If the virtual terminal is wrong in connection configuration, the fault of the virtual terminal is described, so that the intelligent terminal cannot normally identify the trip and close GOOSE signal sent by the protection device, and further the reverse correction GOOSE signal of the trip and close of the intelligent terminal cannot be sent, and the reverse correction GOOSE displacement of the trip and close of the intelligent terminal cannot be sent.

In step S216, under the condition that it is determined that the GOOSE virtual terminal connection configuration of the tripping and closing of the intelligent terminal is correct, it is determined that the reverse calibration message of the intelligent terminal outputs a logic fault. If the virtual terminal is connected and configured without errors, the virtual terminal is indicated to work normally, the intelligent terminal can normally identify the trip and close GOOSE signal sent by the protection device, and then the intelligent terminal can send the deflection of the trip and close anti-correction GOOSE signal. However, in order to further determine the fault location, the output logic of the smart terminal reverse correction message needs to be further checked, and the output logic of the smart terminal reverse correction message is well known to those skilled in the art.

In step S22, when it is determined that the smart terminal trip/close anti-trip GOOSE signal has shifted, it is determined whether the shift state of the smart terminal trip/close anti-trip GOOSE signal is correct. And when the situation that the GOOSE signal of the intelligent terminal is subjected to tripping and closing anti-correction is judged to be displaced, the networking optical port, the straight tripping optical port, the optical fiber link and the virtual terminal are all normally connected and configured. However, in order to determine whether the intelligent terminal trip and closing anti-correction GOOSE signal works normally, the intelligent terminal trip and closing anti-correction GOOSE signal needs to be further diagnosed to determine whether the deflection state is correct or not.

In step S220, when the displacement state of the intelligent terminal trip/close anti-correction GOOSE signal is determined to be incorrect, it is determined that the signal of the intelligent terminal trip/close anti-correction GOOSE signal is unexpected. If the deflection state of the intelligent terminal tripping and closing anti-correction GOOSE signal is incorrect, the deflection state of the intelligent terminal tripping and closing anti-correction GOOSE signal is inconsistent with the preset deflection state.

In step S23, when the displacement state of the smart terminal trip/close anti-correction GOOSE signal is determined to be correct, it is determined whether the displacement time of the smart terminal trip/close anti-correction GOOSE signal is within the standard threshold. If the anti-correction GOOSE signal deflection state of the tripping and closing of the intelligent terminal is correct, the anti-correction GOOSE signal of the tripping and closing of the intelligent terminal is consistent with the preset deflection state. However, in order to determine whether the intelligent terminal trip and closing anti-correction GOOSE signal works normally, the intelligent terminal trip and closing anti-correction GOOSE signal needs to be further diagnosed to determine whether the displacement time is normal or not. Specifically, the shift time of the intelligent terminal trip and close anti-correction GOOSE signal may be recorded at the same time when the message of the intelligent terminal trip and close anti-correction GOOSE signal is read, and the difference between the shift time of the intelligent terminal trip and close anti-correction GOOSE signal and the start signal time may be calculated and compared with the standard threshold set in the trip and close monitoring reference template.

In step S230, when it is determined that the displacement time of the intelligent terminal trip/close anti-calibration GOOSE signal is not within the standard threshold, it is determined that the displacement time of the intelligent terminal trip/close anti-calibration GOOSE signal exceeds the range. If the displacement time of the intelligent terminal tripping and closing anti-correction GOOSE signal is not within the standard threshold, the situation that the displacement time of the intelligent terminal tripping and closing anti-correction GOOSE signal is inconsistent with the preset displacement time is shown.

And after the GOOSE signals of the tripping and closing are diagnosed, monitoring the intelligent terminal tripping and closing anti-correction GOOSE signals of the protection device through the process layer network again. Under the condition that the displacement time of the tripping and closing GOOSE signal is judged to be within the standard threshold, whether the intelligent terminal tripping and closing reverse correction GOOSE signal is acquired, whether displacement occurs, whether the displacement is correct and whether the displacement time is within the standard threshold are sequentially judged. Under the condition that the intelligent terminal tripping and closing anti-correction GOOSE signal and the intelligent terminal tripping and closing anti-correction GOOSE signal are not displaced, whether the lower limit of optical power of a network port of an intelligent terminal group and a connecting port corresponding to an exchanger is higher and/or whether the intelligent terminal is broken is diagnosed, if the lower limit of the optical power of the optical port is higher, the optical fiber or the optical module is damaged, and the optical fiber link needs to be recovered. Under the condition that the intelligent terminal is normally networked, whether the optical power of a straight light-jumping port directly connected with the protection optical fiber of the intelligent terminal is lower or a broken link alarm occurs or not is diagnosed, if the straight light-jumping port is broken, a switch-off GOOSE signal sent by the protection device cannot be identified by the intelligent terminal, then a switch-off anti-correction GOOSE signal of the intelligent terminal cannot be sent, an optical fiber link needs to be replied, and the switch-off GOOSE signal is identified. And under the condition that the networking port and the straight hop port link of the intelligent terminal are normal, diagnosing whether the virtual terminal configuration between the intelligent terminal and the protection device has errors. If the virtual terminal configuration between the intelligent terminal and the protection device has errors, the intelligent terminal cannot normally identify the trip and close GOOSE signals sent by the protection device, and then the anti-correction GOOSE signals of the trip and close of the intelligent terminal cannot be sent, so that the situation that the anti-correction GOOSE signals of the trip and close of the intelligent terminal are displaced cannot occur. If the optical fiber link and the virtual terminal are both normal, the output logic of the reverse correction message of the intelligent terminal needs to be confirmed, and the output logic of the reverse correction message of the intelligent terminal needs to be further checked, which is well known by those skilled in the art. If the output logic error of the message which can only be corrected by the terminal exists, the output logic needs to be checked again and reset. When the intelligent terminal tripping and closing anti-correction GOOSE signal is displaced and the displacement state of the intelligent terminal tripping and closing anti-correction GOOSE signal is incorrect, the signal of the intelligent terminal tripping and closing anti-correction GOOSE signal is unexpected. When the deflection state of the intelligent terminal tripping and closing anti-correction GOOSE signal is correct and the deflection time of the intelligent terminal tripping and closing anti-correction GOOSE signal is not within the standard threshold, the deflection time of the intelligent terminal tripping and closing anti-correction GOOSE signal exceeds the range. Through diagnosing many times of intelligent terminal tripping and closing anti-correction GOOSE signals, further accurate positioning of faults is achieved, operators can handle the faults in time conveniently, and stability of a tripping and closing loop is guaranteed.

Fig. 3 is a flowchart of diagnosing and locating a back-pick acknowledge GOOSE signal in a fault diagnosing and locating method for monitoring a tripping and closing switch according to an embodiment of the present invention. In fig. 3, the fault diagnosis positioning method may include:

in step S30, when it is determined that the displacement time of the intelligent terminal trip/close anti-calibration GOOSE signal is within the standard threshold, the extraction confirmation GOOSE signal is obtained. If the deflection time of the intelligent terminal tripping and closing anti-correction GOOSE signal is within the standard threshold, the intelligent terminal tripping and closing anti-correction GOOSE signal works normally. In order to further determine the location of the fault, it is therefore necessary to monitor and diagnose the extraction confirmation GOOSE signal. Specifically, within the time range from the first 3 seconds to the last 10 seconds of the start, the process layer network acquires the GOOSE return signal of the protection device, and the acquisition unit acquires the GOOSE packet through the switch and transmits the acquired signal to the management unit through the switch.

In step S31, when it is determined that the extraction confirmation GOOSE signal is received, it is determined whether or not the extraction confirmation GOOSE signal is displaced. When the signal of the GOOSE is received, the situation that the signal of the GOOSE works is indicated in the tripping and closing loop. However, in order to determine whether the extraction confirmation GOOSE signal is working normally, the extraction confirmation GOOSE signal needs to be further diagnosed as to whether it is shifted or not. Specifically, the OFF-to-ON displacement state of the goase signal may be acquired at the same time as the message of the goase signal is read.

In step S310, in a case that it is determined that the GOOSE signal is not shifted, it is determined whether the operation loop of the intelligent terminal is normally powered. The GOOSE signal is confirmed to be not displaced, which indicates that the GOOSE signal is confirmed to be not normally operated, namely, the tripping and closing loop has a fault. However, in order to determine the specific fault location of the extraction confirmation GOOSE signal, further diagnosis needs to be performed on the extraction confirmation GOOSE signal. Specifically, in the prior art, the diagnostic process may be to check the operation loop and the backplane terminal of the smart terminal to determine whether the operation loop of the smart terminal is normally powered.

In step S311, when it is determined that the monitoring power supply of the operation loop of the intelligent terminal is normal, it is determined that the output of the acknowledgement message from the outlet of the intelligent terminal has a logic fault. And if the intelligent terminal operation loop monitors that the power supply is normal, the intelligent terminal operation loop is indicated to work normally. In order to further determine the location of the fault, it is therefore necessary to check the output logic of the intelligent terminal egress acknowledgement message, which is well known to those skilled in the art.

In step S312, in the case that it is determined that the smart terminal operation loop monitoring power supply is not supplied, an operation loop fault is determined. If the intelligent terminal operation loop monitors that the power supply is not supplied, the intelligent terminal operation loop does not work because the GOOSE signal deflection is not monitored to be confirmed by mining.

In step S32, when it is determined that the extraction confirmation GOOSE signal has been displaced, it is determined whether the displacement state of the extraction confirmation GOOSE signal is correct. And under the condition that the GOOSE signal is judged to be displaced by mining, the situation that the power supply of the intelligent terminal operation loop is normal is explained. However, in order to determine whether the extraction confirmation GOOSE signal is working normally, it is necessary to perform further diagnosis on whether the displacement state of the extraction confirmation GOOSE signal is correct or not.

In step S320, when the displacement state of the extraction confirmation GOOSE signal is judged to be incorrect, it is judged that the extraction confirmation GOOSE signal is not expected. If the displacement state of the goase signal is incorrect, it indicates that the displacement state of the goase signal is inconsistent with the preset value.

In step S33, when the displacement state of the extraction confirmation GOOSE signal is determined to be correct, it is determined whether or not the displacement time of the extraction confirmation GOOSE signal is within the standard threshold. And if the GOOSE signal deflection state is confirmed to be correct by the back-extraction, the GOOSE signal confirmed by the back-extraction is consistent with the preset deflection state. However, in order to determine whether the extraction confirmation GOOSE signal is operating normally, it is necessary to diagnose whether the extraction confirmation GOOSE signal is normal or not by further displacement time. Specifically, the shift time of the goase signal is recorded at the same time when the message of the goase signal is read, and the difference between the shift time of the goase signal and the start signal time is calculated and compared with the standard threshold set in the trip and close monitoring reference template.

In step S330, when the displacement time of the extraction confirmation GOOSE signal is determined not to be within the standard threshold, it is determined that the displacement time of the extraction confirmation GOOSE signal is out of range. And if the displacement time of the GOOSE signal is not within the standard threshold, indicating that the displacement time of the GOOSE signal is inconsistent with the preset value.

And after the intelligent terminal tripping and closing anti-correction GOOSE signal is diagnosed, monitoring the recovery confirmation GOOSE signal of the protection device through the process layer network again. Under the condition that the displacement time of the intelligent terminal tripping and closing reverse correction GOOSE signal is judged to be within the standard threshold, whether the GOOSE signal is acquired, whether displacement occurs, whether the displacement is correct and whether the displacement time is within the standard threshold are judged in sequence. When the GOOSE signal is acquired and confirmed to be recovered and the GOOSE signal is not displaced, the operation loop and the backboard terminal of the intelligent terminal are checked to confirm whether the power supply of the operation loop of the intelligent terminal is normal or not, and under the condition that the power supply of the operation loop of the intelligent terminal is determined to be normal, the output logic of the output confirmation message of the intelligent terminal needs to be further checked, and the output logic of the output confirmation message of the intelligent terminal is well known by persons in the field. And under the condition that the power supply of the operation loop of the intelligent terminal is not normal, determining the power failure of the operation loop of the intelligent terminal, and needing to maintain the power supply of the operation loop. When the sampling confirmation GOOSE signal is shifted and the shifting state of the sampling confirmation GOOSE signal is incorrect, the signal of the sampling confirmation GOOSE signal is unexpected. And when the sampling confirmation GOOSE signal is correct in displacement state and the displacement time of the sampling confirmation GOOSE signal is not within the standard threshold, exceeding the displacement time range of the sampling confirmation GOOSE signal. Through the multiple diagnosis of the GOOSE signal confirmed by the back-extraction, the accurate positioning of the fault is further realized, so that an operator can conveniently find the fault position and timely carry out maintenance processing.

Fig. 4 is a flowchart illustrating the diagnosis and location of the GOOSE signal of the breaker position in a fault diagnosis and location method for monitoring tripping and closing according to an embodiment of the present invention; in fig. 4, the fault diagnosis positioning method may include:

in step S40, when it is determined that the shift time of the sampling confirmation GOOSE signal is within the standard threshold, the breaker position GOOSE signal is acquired. And if the displacement time of the GOOSE signal is within the standard threshold, indicating that the GOOSE signal works normally. To further determine the location of the fault, it is therefore necessary to monitor and diagnose the GOOSE signal for the breaker position. Specifically, within the time range from the first 3 seconds to the last 10 seconds of the start, the GOOSE signal of the breaker position of the protection device is acquired through the process layer network, the acquisition unit acquires the GOOSE message through the switch, and the acquired signal is transmitted to the management unit through the switch.

In step S41, when it is determined that the breaker position GOOSE signal is received, it is determined whether or not the breaker position GOOSE signal is displaced. When the breaker position GOOSE signal is received, it is indicated that the breaker position GOOSE signal works in the tripping and closing circuit. However, in order to determine whether the GOOSE signal is working normally, the GOOSE signal needs to be further diagnosed as to whether it is shifted or not. Specifically, the OFF-to-ON displacement state of the breaker position GOOSE signal may be obtained at the same time when the message of the breaker position GOOSE signal is read.

In step S410, when it is determined that the GOOSE signal is not shifted, it is determined whether or not the power supply of the access panel is normal. The breaker position GOOSE signal is not shifted, which indicates that the breaker position GOOSE signal does not work normally, i.e., a tripping and closing circuit has a fault. However, in order to determine the specific fault location of the GOOSE signal, further diagnosis is needed for the GOOSE signal. Specifically, in the prior art, whether a primary connection from a tripping and closing outlet of an intelligent terminal operation loop to a circuit breaker and a primary connection from an opening plate to the circuit breaker are normal or not, and a power supply of the opening plate, a separating and closing position of the circuit breaker and the like are checked.

In step S411, in the case that the power supply of the switching board power supply is determined to be normal, the external wiring fault of the switching board at the position of the intelligent terminal switch is determined. If the power supply of the switch-in board power supply is normal, the switch-in board power supply is free of faults. The external wiring of the intelligent terminal switch position opening plate is in fault, and the external wiring of the intelligent terminal switch position opening plate needs to be overhauled.

In step S412, in the case where it is determined that the power supply to the opening board is not normal, a power connection failure is determined. If the power supply of the switch-in board power supply is abnormal, the switch-in board power supply has a wiring fault. The wiring to the board power supply needs to be serviced.

In step S42, when it is determined that the breaker position GOOSE signal has been displaced, it is determined whether the displacement state of the breaker position GOOSE signal is correct. And when the GOOSE signal at the position of the circuit breaker is judged to be displaced, the power supply of the switch-on board is normal. However, in order to determine whether the GOOSE signal is working normally, the GOOSE signal needs to be further diagnosed to determine whether the shift state is correct or not.

In step S420, when the displacement state of the breaker position GOOSE signal is judged to be incorrect, it is judged that the breaker position GOOSE signal is not expected. If the deflection state of the GOOSE signal at the position of the circuit breaker is incorrect, the deflection state of the GOOSE signal at the position of the circuit breaker is inconsistent with the preset value.

In step S43, when the state of displacement of the breaker position GOOSE signal is determined to be correct, it is determined whether or not the time of displacement of the breaker position GOOSE signal is within the standard threshold. If the position of the GOOSE signal of the circuit breaker is correct, the situation that the position of the GOOSE signal of the circuit breaker is consistent with the preset displacement state is shown. However, in order to determine whether the GOOSE signal is working normally, the GOOSE signal needs to be further diagnosed whether the shift time is normal or not. Specifically, the time of the reading of the message of the GOOSE signal at the breaker position may be the same time, the time of the change of the GOOSE signal at the breaker position is recorded, the difference between the time of the change of the GOOSE signal at the breaker position and the time of the start signal is calculated, and the difference is compared with the standard threshold set in the trip and close monitoring reference template.

In step S430, when it is determined that the displacement time of the breaker position GOOSE signal is not within the standard threshold, it is determined that the displacement time of the breaker position GOOSE signal is out of the range. If the shifting time of the GOOSE signal of the breaker position is not within the standard threshold, it indicates that the shifting time of the GOOSE signal of the breaker position is inconsistent with the preset value.

In step S44, when the displacement time of the breaker position GOOSE signal is determined to be within the standard threshold, it is determined that the tripping and closing circuit is normal. If the displacement time of the breaker position GOOSE signal is within the standard threshold, the breaker position GOOSE signal is indicated to normally work, and meanwhile, the tripping and closing circuit is also indicated to normally work.

And after the GOOSE signal is diagnosed for the extraction confirmation, monitoring the GOOSE signal of the breaker position of the protection device through the process layer network again. And under the condition that the judgment and recovery confirm that the displacement time of the GOOSE signal is within the standard threshold, sequentially judging whether the GOOSE signal of the position of the circuit breaker is acquired, whether the displacement occurs, whether the displacement is correct and whether the displacement time is within the standard threshold. Under the condition that the obtained GOOSE signal of the position of the circuit breaker and the GOOSE signal of the position of the circuit breaker are determined not to be displaced, whether a primary wiring from a tripping and closing outlet of an operation loop of the intelligent terminal to the circuit breaker, a primary wiring from an opening plate to the circuit breaker, an opening plate power supply, a circuit breaker separating and closing position and the like are checked, and the purpose is to check whether the power supply of the opening plate power supply is normal. If the power supply of the switch-in board power supply is normal, the external wiring fault of the switch-in board at the position of the intelligent terminal switch needs to be checked, if the power supply of the switch-in board power supply is abnormal, the wiring fault of the switch-in board power supply can be determined, the switch-in board power supply needs to be re-wired, and the normal power supply of the switch-in board power supply is guaranteed. When the GOOSE signal is shifted and the shifted state of the GOOSE signal is incorrect, the GOOSE signal is not expected. When the circuit breaker position GOOSE signal is correct in displacement state and the displacement time of the circuit breaker position GOOSE signal is not within the standard threshold, the displacement time of the circuit breaker position GOOSE signal exceeds the range. If the displacement time of the GOOSE signal of the position of the circuit breaker is within the standard threshold, the circuit breaker is normal in operation and free of faults. Through diagnosing many times to breaker position GOOSE signal, further realized the accurate positioning to the trouble, improved fault diagnosis's efficiency, through the timely processing to the trouble for tripping and closing circuit can the steady operation.

Fig. 5 is a flow chart of signal acquisition and diagnosis in a fault diagnosis positioning method for monitoring tripping and closing according to an embodiment of the invention; in fig. 5, the fault diagnosis positioning method may include:

in step S50, it is determined whether or not a trip gate GOOSE signal is received.

In step S51, when it is determined that the trip/close GOOSE signal is not received, it is determined whether an intelligent terminal trip/close anti-calibration GOOSE signal is received. And if the switch-off GOOSE signal is not received, the switch-off GOOSE signal is not sent out or has a fault. In order to further determine the fault content, the intelligent terminal tripping and closing anti-correction GOOSE signal can be further monitored and acquired.

In step S510, when it is determined that the trip and switch reverse GOOSE signal of the intelligent terminal is received, it is determined that the trip and switch GOOSE signal is lost and/or the phase sequence is incorrect.

In step S52, when it is determined that the smart terminal trip/close anti-correction GOOSE signal has not been received, it is determined whether an extraction confirmation GOOSE signal has been received. And if the anti-correction GOOSE signal of the intelligent terminal tripping and closing is not received, the situation that the anti-correction GOOSE signal of the intelligent terminal tripping and closing is not sent out or a fault occurs is shown. In order to further determine the fault content, the extraction confirmation GOOSE signal can be further monitored and acquired.

In step S520, when it is determined that the goase signal is received, it is determined that the trip and close GOOSE signal and/or the intelligent terminal trip and close anti-correction GOOSE signal is lost and/or the phase sequence error.

In step S53, when it is determined that the extraction confirmation GOOSE signal has not been received, it is determined whether or not the breaker position GOOSE signal has been received. And if the recovery confirmation GOOSE signal is not received, indicating that the recovery confirmation GOOSE signal is not sent or has a fault. To further determine the fault content, the breaker position GOOSE signal may be further monitored and obtained.

In step S530, when it is determined that the GOOSE signal of the breaker position is received, it is determined that the GOOSE signal for tripping and closing, the anti-correction GOOSE signal for tripping and closing of the intelligent terminal, and/or the back-sampling confirmation GOOSE signal all have signal loss and/or phase sequence error.

Under the condition that a starting signal of the protection device and an action MMS signal of the protection device are monitored, a tripping and closing GOOSE signal, an intelligent terminal tripping and closing anti-correction GOOSE signal, a recovery confirmation GOOSE signal and a breaker position GOOSE signal are sequentially monitored through a process layer network, and whether the signals are lost or have phase sequence errors is judged according to the result of whether the signals are monitored.

And the tripping and closing monitoring reference template in the management unit is set by adopting a tree structure of a father node and a son node. Taking the trip breaker a-phase GOOSE signal as an example, in fig. 7, the parent node may include the trip breaker a-phase GOOSE signal, and the child nodes may include a-phase breaker position, start a-phase failure, a-phase trip outlet inverse correction, and a-phase trip outlet stopover. The application type of the trip breaker a-phase GOOSE signal may include trip, so as to determine whether the trip GOOSE signal of the protection device is normally issued. And selecting a protection trip signal under the dsTripInfo data set from all the line protection MMS data sets to be related to the father node so as to judge whether the protection trip MMS node is normal or not. The expected shift of the trip breaker S-phase GOOSE signal includes 1, and the expected shift is the shift of the trip breaker a-phase GOOSE signal from OFF to ON. And if the displacement of the A-phase GOOSE signal of the jump breaker is inconsistent with the preset displacement, judging that the A-phase GOOSE signal of the jump breaker is unexpected. And if the A-phase GOOSE signal of the jump breaker is not received, judging that the signal is lost.

Specifically, four types of signals, namely, the set position of the child node, the start failure, the reverse correction and the confirmation, can be included:

intelligent terminal A phase circuit breaker position signal: the intelligent terminal A-phase breaker position signal comprises an application type of position, deflection time of 100ms and expected deflection from ON to OFF. And if the intelligent terminal A-phase breaker position signal is not received, judging that the intelligent terminal A-phase breaker position signal is lost. If the displacement time of the intelligent terminal A-phase breaker position signal exceeds 100ms, judging that the displacement time of the intelligent terminal A-phase breaker position signal exceeds the range; if the deflection phase sequence of the intelligent terminal A-phase breaker position signal is not the A phase, judging the phase error sequence of the intelligent terminal A-phase breaker position signal; if the displacement of the intelligent terminal A-phase breaker position signal is not from ON to OFF, the signal of the intelligent terminal A-phase breaker position signal is judged to be unexpected.

Protection device start failure GOOSE signal: the protection device startup failure GOOSE signal comprises the application type of startup failure, the deflection time is 10ms, and the expected deflection is from OFF to ON. And if the protection device startup failure GOOSE signal is not received, judging that the protection device startup failure GOOSE signal is lost. If the displacement time of the protection device startup failure GOOSE signal exceeds 10ms, judging that the displacement time of the protection device startup failure GOOSE signal exceeds the range; if the deflection phase sequence of the start-up failure GOOSE signal of the protection device is not the A phase, judging that the phase sequence of the start-up failure GOOSE signal of the intelligent protection device is out of order; if the displacement of the protection device startup failure GOOSE signal is not from OFF to ON, the signal of the protection device startup failure GOOSE signal is determined to be unexpected.

The A-phase tripping outlet of the intelligent terminal corrects the signal: the intelligent terminal A-phase trip outlet reverse correction signal comprises an application type of reverse correction, the deflection time is 100ms, the phase A current is less than 0.1In after 150ms, and the expected deflection is from OFF to ON. And if the A-phase current is greater than or equal to 0.1In after 150ms, judging that the tripping operation is abnormal. And if the A-phase tripping outlet reverse calibration signal of the intelligent terminal is not received, judging that the A-phase tripping outlet reverse calibration signal of the intelligent terminal is lost. If the deflection time of the A-phase tripping outlet reverse correction signal of the intelligent terminal exceeds 100ms, judging that the deflection time of the A-phase tripping outlet reverse correction signal of the intelligent terminal exceeds the range; if the deflection phase sequence of the A-phase tripping outlet reverse correction signal of the intelligent terminal is not the A-phase, judging the phase error sequence of the A-phase tripping outlet reverse correction signal of the intelligent terminal; and if the deflection of the intelligent terminal A-phase trip outlet reverse correction signal is not from OFF to ON, judging that the signal of the intelligent terminal A-phase trip outlet reverse correction signal is unexpected.

And (3) extracting signals of an A-phase tripping outlet of the intelligent terminal: the intelligent terminal A-phase tripping outlet recovery signal comprises that the application type is confirmed, the deflection time is 10ms, and the deflection is expected to be from OFF to ON. And if the intelligent terminal A-phase tripping outlet recovery signal is not received, judging that the intelligent terminal A-phase tripping outlet recovery signal is lost. If the displacement time of the intelligent terminal A-phase tripping outlet recovery signal exceeds 10ms, judging that the displacement time of the intelligent terminal A-phase tripping outlet recovery signal exceeds the range; if the deflection phase sequence of the intelligent terminal A-phase tripping outlet recovery signal is not the A-phase, judging the phase error sequence of the intelligent terminal A-phase tripping outlet recovery signal; and if the deflection of the intelligent terminal A-phase tripping outlet extraction signal is not from OFF to ON, judging that the signal of the intelligent terminal A-phase tripping outlet extraction signal is unexpected.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.

The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A fault diagnosis positioning method for monitoring tripping and closing is characterized by comprising the following steps:

judging whether a starting signal of the protection device is received or not;

judging whether the action MMS signal is received or not;

judging whether the tripping and closing GOOSE signals are received or not;

under the condition that the tripping and closing GOOSE signal is judged not to be displaced, determining that the tripping and closing GOOSE signal is lost, and judging whether the networking optical power of the protection device exceeds a lower limit and/or whether a link breaking alarm of the protection device exists or not;

2. The fault diagnosis positioning method according to claim 1, characterized by comprising:

under the condition that the action MMS signal is judged to be received, the tripping and closing GOOSE signal is obtained;

judging whether the tripping and closing GOOSE signals are received or not;

judging whether the GOOSE signal is received or not;

3. The fault diagnosis positioning method according to claim 1, characterized by comprising:

4. The fault diagnosis positioning method according to claim 3, characterized by comprising:

under the condition that the deflection time of the tripping and closing GOOSE signal is judged to be within a standard threshold value, a tripping and closing reverse correction GOOSE signal of the intelligent terminal is obtained;

5. The fault diagnosis positioning method according to claim 4, characterized by comprising:

under the condition that the intelligent terminal tripping and closing anti-correction GOOSE signal is received, judging whether the intelligent terminal tripping and closing anti-correction GOOSE signal is displaced or not;

6. The fault diagnosis positioning method according to claim 5, characterized by comprising:

acquiring a back-sampling confirmation GOOSE signal under the condition that the displacement time of the intelligent terminal tripping and closing anti-correction GOOSE signal is judged to be within a standard threshold;

7. The fault diagnosis positioning method according to claim 6, characterized by comprising:

8. The fault diagnosis positioning method according to claim 7, characterized by comprising:

acquiring a GOOSE signal of the position of the circuit breaker under the condition that the deflection time of the GOOSE signal is judged to be within a standard threshold value;

9. The fault diagnosis positioning method according to claim 8, characterized by comprising:

10. The fault diagnosis positioning method according to claim 1, wherein the trip gate GOOSE signal comprises a fail-on GOOSE signal.