CN113466584B

CN113466584B - Fault diagnosis positioning method for tripping and closing monitoring

Info

Publication number: CN113466584B
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: Super High Voltage Branch Of State Grid Anhui Electric Power Co ltd
Current assignee: Super High Voltage Branch Of State Grid Anhui Electric Power Co ltd
Priority date: 2021-06-22
Filing date: 2021-06-22
Publication date: 2023-07-07
Anticipated expiration: 2041-06-22
Also published as: CN113466584A

Abstract

The embodiment of the invention provides a fault diagnosis and positioning method for tripping and closing monitoring, and belongs to the technical field of power grids. The fault diagnosis and positioning method comprises the following steps: judging whether a protection device starting signal is received or not; under the condition that the protection device starting signal is received, acquiring an action MMS signal; judging whether the action MMS signal is received or not; under the condition that the action MMS signal is received, acquiring a tripping and closing GOOSE signal; the invention provides a fault diagnosis and positioning method for tripping and closing monitoring, which monitors tripping and closing GOOSE signals, intelligent terminal tripping and closing anti-calibration GOOSE signals, stoping confirmation signals and breaker position GOOSE signals through tripping and closing monitoring reference templates, and performs fault diagnosis and positioning by judging the displacement states and displacement time of the signals, thereby reducing the workload of operator fault investigation and improving the efficiency of fault investigation.

Description

Fault diagnosis positioning method for tripping and closing monitoring

Technical Field

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

Background

The method is different from the mode that the tripping and closing action of the traditional transformer substation protection device outputs an electric signal, and the tripping and closing action of the protection device in the intelligent transformer substation outputs a GOOSE signal, so that an intermediate conversion link of an intelligent terminal is added in a tripping and closing loop from the protection device to a circuit breaker. And complete tripping and closing is carried out once, tripping and closing GOOSE signals are required to be sent from the protection device, the signals are sent and received correctly through each step from the intelligent terminal to the circuit breaker, and the action time is within the required range. In the tripping and closing process, the tripping and closing loop can be monitored by collecting related GOOSE and MMS signals in the tripping and closing process, and the occurrence sequence and time of the events can be checked.

However, for the currently applied tripping and closing loop monitoring method, the related GOOSE and MMS signals in tripping and closing, anti-calibration, confirmation and other processes are monitored, and the diagnosis, analysis and positioning of the fault condition are not concerned too much when the field tripping and closing loop breaks down, so that the field fault investigation still needs to repeatedly check the power of an inspection port, the on-off of an optical fiber, the switching of a pressing plate and the like, the difficulty of fault investigation is greatly increased, and the efficiency of fault investigation is reduced.

Disclosure of Invention

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

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

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

under the condition that the protection device starting signal is received, acquiring an action MMS signal;

judging whether the action MMS signal is received or not;

under the condition that the action MMS signal is received, acquiring a tripping and closing GOOSE signal;

judging whether the tripping and closing GOOSE signal is received or not;

Judging whether the tripping and closing GOOSE signal is shifted or not under the condition that the tripping and closing GOOSE signal is received;

under the condition that the tripping and closing GOOSE signal is judged to be not shifted, determining that the tripping and closing GOOSE signal is lost, and judging whether the networking optical power of the protection device is lower than the lower limit or not and/or whether the chain breakage alarm condition of the protection device exists or not;

under the condition that the lower limit of the networking optical power of the protection device is judged and/or the protection device chain breakage alarm is monitored, determining that the optical fiber or the optical module has faults;

judging the state of a GOOSE outlet pressing plate of the protection device under the condition that the networking optical power of the protection device is not over the lower limit and the protection device has no broken chain alarm;

determining that logic and setting faults exist in the protection device under the condition that the GOOSE outlet pressing plate of the protection device is in a put-in state;

under the condition that the GOOSE outlet pressing plate of the protection device is not in the input state, determining that the protection device is in the state of not inputting the pressing plate;

and judging that the protection device records the wave abnormally under the condition that the action MMS signal is not received.

Optionally, under the condition that the action MMS signal is received, acquiring the tripping and closing GOOSE signal;

Judging whether the tripping and closing GOOSE signal is received or not;

under the condition that the tripping and closing GOOSE signal is not received, acquiring an intelligent terminal tripping and closing anti-calibration GOOSE signal;

judging whether a tripping and closing anti-correction GOOSE signal of the intelligent terminal is received or not;

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

acquiring a stoping confirmation GOOSE signal under the condition that the intelligent terminal tripping and closing anti-correction GOOSE signal is not received;

judging whether the stope confirmation GOOSE signal is received or not;

under the condition that the stope confirmation GOOSE signal is received, judging the tripping and closing GOOSE signal and/or the tripping and closing anti-calibration GOOSE signal loss and/or phase sequence error of the intelligent terminal;

acquiring a breaker position GOOSE signal under the condition that the stope GOOSE signal is not received;

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

under the condition that the position GOOSE signal of the circuit breaker is received, judging that the tripping and closing GOOSE signal, the intelligent terminal tripping and closing anti-calibration GOOSE signal and/or the stoping confirmation GOOSE signal have signal loss and/or phase sequence errors.

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

under the condition that the tripping and closing GOOSE signal is judged to be shifted, judging whether the shifting state of the tripping and closing GOOSE signal is correct or not;

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 state of the tripping and closing GOOSE signal is correct;

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

and under the condition that the displacement state of the tripping and closing GOOSE signal is not correct, judging that the signal of the tripping and closing GOOSE signal is unexpected.

Optionally, under the condition that the displacement time of the tripping and closing GOOSE signal is judged to be within a standard threshold, acquiring an intelligent terminal tripping and closing anti-calibration GOOSE signal;

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 shifted or not again;

under the condition that whether the intelligent terminal tripping and closing anti-correction GOOSE signal is not shifted is judged, judging whether the intelligent terminal networking optical power is lower than a limit and/or whether the intelligent terminal chain breakage alarming condition exists;

Determining that the optical fiber or the optical module has faults when judging that the networking optical power of the intelligent terminal has lower limit and/or the intelligent terminal has broken link alarming;

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

judging whether the intelligent terminal directly-jumped optical power has lower limit and/or has a direct-jumped optical link breakage alarm, wherein the direct-jumped optical link breakage fault exists;

judging whether the connection configuration of the intelligent terminal tripping and closing GOOSE virtual terminal is wrong or not under the condition that the intelligent terminal tripping and closing optical power does not exceed the lower limit and the chain breakage alarm of the tripping and closing optical port does not exist;

determining a virtual terminal fault under the condition that the fault of the connection configuration of the intelligent terminal tripping and closing GOOSE virtual terminal is judged to be wrong;

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

Optionally, 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 shifted or not;

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

and under the condition that the deflection state of the intelligent terminal tripping and closing anti-correction GOOSE signal is not correct, judging that the signal of the intelligent terminal tripping and closing anti-correction GOOSE signal is unexpected.

Optionally, under the condition that the deflection time of the intelligent terminal tripping and closing anti-correction GOOSE signal is judged to be within a standard threshold value, acquiring a stoping confirmation GOOSE signal;

judging whether the stope confirmed GOOSE signal is shifted or not under the condition that the stope confirmed GOOSE signal is received;

Judging whether an intelligent terminal operation loop is normally powered or not under the condition that the stope confirmation GOOSE signal is not shifted;

determining an intelligent terminal outlet confirmation message output logic fault when judging that the monitoring power supply of the intelligent terminal operation loop is normal;

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

Optionally, under the condition that the recovery confirmation GOOSE signal is received, judging whether the recovery confirmation GOOSE signal is shifted or not;

judging whether the displacement state of the stoping confirmation GOOSE signal is correct or not under the condition that the stoping confirmation GOOSE signal is judged to be displaced;

judging whether the displacement time of the stope confirmed GOOSE signal is within a standard threshold value or not under the condition that the displacement state of the stope confirmed GOOSE signal is correct;

under the condition that the displacement time of the stope confirmation GOOSE signal is not within a standard threshold, judging that the displacement time of the stope confirmation GOOSE signal is out of range;

and under the condition that the displacement state of the stoping confirmation GOOSE signal is not correct, judging that the signal of the stoping confirmation GOOSE signal is unexpected.

Optionally, under the condition that the displacement time of the stope confirmed GOOSE signal is judged to be within a standard threshold, acquiring a breaker position GOOSE signal;

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

judging whether the power supply of the on-board power supply is normal or not under the condition that the position GOOSE signal of the circuit breaker is not shifted;

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

and under the condition that the power supply of the power-on board is abnormal, determining a power wiring fault.

Optionally, under the condition that the breaker position GOOSE signal is received, judging whether the breaker position GOOSE signal is shifted or not;

judging whether the position changing state of the circuit breaker position GOOSE signal is correct or not under the condition that the circuit breaker position GOOSE signal is judged to be changed;

judging whether the displacement time of the breaker position GOOSE signal is within a standard threshold value or not under the condition that the displacement state of the breaker position GOOSE signal is correct;

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

Under the condition that the deflection time of the GOOSE signal of the breaker position 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 circuit breaker position GOOSE signal is not correct, judging that the signal of the circuit breaker position GOOSE signal is unexpected.

Optionally, the trip-close GOOSE signal includes a start failure signal.

According to the technical scheme, the fault diagnosis and positioning method for the tripping and closing monitoring is provided, tripping and closing GOOSE signals, intelligent terminal tripping and closing anti-calibration GOOSE signals, stoping confirmation signals and breaker position GOOSE signals are monitored through the tripping and closing monitoring reference template, fault diagnosis and positioning are carried out through judging the displacement states and the displacement time of each signal, the workload of fault investigation of operators is reduced, and the fault investigation 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 are included to provide a further understanding of 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, without limitation, the embodiments of the invention. In the drawings:

FIG. 1 is a partial diagnostic locating flow chart of a fault diagnostic locating method for tripping and closing monitoring according to an embodiment of the invention;

FIG. 2 is a flowchart of diagnosing and positioning an intelligent terminal tripping and closing check GOOSE signal in a fault diagnosing and positioning method for tripping and closing monitoring according to an embodiment of the invention;

FIG. 3 is a flowchart of a diagnosis and location of a recovery acknowledgment GOOSE signal in a fault diagnosis and location method of tripping and closing monitoring according to an embodiment of the present invention;

FIG. 4 is a flow chart of the diagnostic positioning of the breaker position GOOSE signal in a fault diagnostic positioning method for tripping and closing monitoring according to an embodiment of the invention;

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

FIG. 6 is a flow chart of a complete diagnostic localization of a fault diagnostic localization method of tripping and closing monitoring according to one embodiment of the present invention;

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

Detailed Description

The following describes the detailed implementation of the embodiments of the present invention with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the invention, are not intended to limit the invention.

A fault diagnosis positioning method for tripping and closing monitoring is realized based on an intelligent wave recording system, and the intelligent wave recording system is a system well known to a person skilled in the art. The intelligent wave recording system comprises a management unit, an acquisition unit and a switch, wherein the management unit is connected with an intelligent substation station control layer network switch through the switch and is used for monitoring and acquiring a starting signal of the 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 tripping and closing GOOSE signals of the protection device, tripping and closing anti-calibration GOOSE signals of the intelligent terminal, stoping confirmation GOOSE signals and breaker position GOOSE signals. The acquisition unit is communicated with the management unit through the switch, and signals on the acquisition unit can be transmitted to the management unit.

And establishing a tripping and closing monitoring reference template in the management unit, monitoring and acquiring a starting signal, an action MMS signal, a tripping and closing GOOSE signal, an intelligent terminal tripping and closing anti-correction GOOSE signal, a stoping confirmation GOOSE signal and a breaker position GOOSE signal of the protection device, wherein the difference value between the occurrence displacement time of the tripping and closing GOOSE signal, the stoping confirmation GOOSE signal of the intelligent terminal tripping and closing anti-correction GOOSE signal and the breaker position GOOSE signal and the starting signal of the protection device is called as the displacement time, setting a standard threshold value of the displacement time of the signals, and setting a reference state of the displacement 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 set manually, and an operator can set a standard threshold value of the corresponding displacement time of each signal according to the actual condition of the intelligent substation, so that the comparison with the actually monitored displacement time can be realized, and the subsequent fault diagnosis and positioning are facilitated.

Fig. 1 is a partial diagnosis positioning flowchart of a fault diagnosis positioning method for tripping and closing monitoring 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 be indicative of whether the protection device is activated. Specifically, the method may monitor the activation signal of the protection device in the site-controlled layer network, transmit the activation signal of the protection device to the management unit, and monitor the activation signal of the protection device 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. Under the condition that the protection device starting signal message is read, the protection device can be determined to be started normally, and after the protection device is started normally, the protection device can send out an action MMS signal, and whether the protection device is in normal recording or not is judged by monitoring the protection device starting signal and the protection device action MMS signal. Specifically, the method may monitor the action MMS signal of the protection device in the station-controlled layer network, transmit the action MMS signal to the management unit, and monitor the action MMS signal of the protection device by reading the MMS message.

In step S110, if it is determined that the operation MMS signal has not been received, it is determined that the protection device has recorded an abnormal wave. 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 the start-up, or the action may be initiated after a delay after the start-up. Normally, when the protection device starting signal and the protection device operation MMS signal are received at the same time, the protection device is indicated to be in fault operation wave recording. Otherwise, under the condition that the message of the action MMS signal of the protection device is not read, the protection device is indicated to not send the action MMS signal, namely, the protection device does not record fault action, and the abnormal 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 switch-on/off GOOSE signal is received. When the protection device starting signal and the protection device action MMS signal are received at the same time, the protection device is indicated to be in fault action wave recording. In order to determine the location of the fault even further, the tripping and closing GOOSE signal needs to be monitored and diagnosed. Specifically, under the condition that the action MMS signal message of the protection device is read, meanwhile, in the time range from the first 3 seconds to the last 10 seconds of starting, the tripping and closing GOOSE signal of the protection device is obtained through a process layer network, the acquisition unit obtains the GOOSE message through the switch, and the acquired signal is transmitted to the management unit through the switch.

In step S13, when it is determined that the opening and closing GOOSE signal is received, it is determined whether or not the opening and closing GOOSE signal is shifted. When the tripping and closing GOOSE signal is received, the tripping and closing GOOSE signal is indicated to work in the tripping and closing loop. However, in order to determine whether the tripping and closing GOOSE signal is operating normally, further diagnosis about whether the tripping and closing GOOSE signal is shifted is required. Specifically, the OFF-to-ON displacement state of the tripping and closing GOOSE signal can be obtained within the same time when the message of the tripping and closing GOOSE signal of the protection device is read.

In step S130, if it is determined that the opening and closing GOOSE signal is not shifted, it is determined that the opening and closing GOOSE signal is lost. The tripping and closing GOOSE signal does not generate deflection, which indicates that the tripping and closing GOOSE signal does not work normally. Namely, the tripping and closing loop has faults, so that the tripping and closing GOOSE signal is lost.

In step S131, it is determined whether there is a lower limit on the protection device networking optical power and/or a protection device link failure alarm condition. Under the condition that the tripping and closing GOOSE signal is not shifted, whether a fault exists in a transmission loop of the tripping and closing GOOSE signal is preferentially checked, and the tripping and closing GOOSE signal can be normally transmitted only if the normal transmission process of the tripping and closing GOOSE signal is ensured. Therefore, the protection device networking optical port and the optical fiber link need to be examined.

In step S132, it is determined that the optical fiber or the optical module has a fault if it is determined that the protection device networking optical power is lower than the lower limit and/or if a protection device link failure alarm is detected. If the optical power of the optical port is lower than the lower limit, 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 tripping and closing GOOSE signal.

In step S133, if it is determined that the optical power of the protection device networking does not exceed the lower limit and the protection device has no link failure alarm, the status of the protection device GOOSE outlet platen is determined. If the networking power of the protection device does not exceed the lower limit and has no broken chain warning, the optical fiber link is normal, and the signal can be normally transmitted and monitored, so that the protection device can be judged not to output the deflection of the tripping and closing GOOSE signal. However, in order to determine the specific fault location of the tripping and closing GOOSE signal, further diagnosis needs to be performed on the tripping and closing GOOSE signal. Specifically, in the prior art, the state of the GOOSE outlet pressing plate of the protecting device can be diagnosed.

In step S134, in the case where it is determined that the protection device GOOSE outlet platen is in the put-in state, it is determined that the protection device has a logic and setting failure. If it is determined that the GOOSE outlet platen of the protector is in the put-in state, which means that the GOOSE outlet platen of the protector is not problematic, the logic and setting of the protector may be incorrect, and thus further logic and setting conditions of the protector are required, which may be well known to those skilled in the art.

In step S135, if it is determined that the protection device GOOSE outlet platen is not in the throw-in state, it is determined that the protection device is in the throw-in state. If the protection device GOOSE outlet pressing plate is determined to be in an unexpended state, the protection device does not output the deflection of the tripping and closing GOOSE signal due to the fact that the protection device GOOSE outlet pressing plate is not input. The corresponding pressing plate is needed to be put in to ensure that the protection device can normally output the deflection of the tripping and closing GOOSE signals.

In step S14, when it is determined that the brake-off GOOSE signal is shifted, it is determined whether or not the shift state of the brake-off GOOSE signal is correct. And under the condition that the tripping and closing signal is judged to be shifted, the networking optical port, the optical fiber link and the GOOSE outlet pressing plate of the protection device are all normal. However, in order to determine whether the tripping and closing GOOSE signal works normally, further diagnosis needs to be made on whether the tripping and closing GOOSE signal is in a correct displacement state or not.

In step S140, if it is determined that the displacement state of the opening and closing GOOSE signal is incorrect, it is determined that the signal of the opening and closing GOOSE signal is unexpected. If the displacement state of the tripping and closing GOOSE signal is incorrect, the fact that the displacement state of the tripping and closing GOOSE signal is inconsistent with the preset value is indicated.

In step S15, when it is determined that the displacement state of the opening and closing GOOSE signal is correct, it is determined whether the displacement time of the opening and closing GOOSE signal is within the standard threshold. If the deflection state of the tripping and closing GOOSE signal is correct, the tripping and closing GOOSE signal is consistent with the preset deflection state. However, in order to determine whether the tripping and closing GOOSE signal is operating normally, further diagnosis needs to be performed on whether the tripping and closing GOOSE signal is normal or not in the displacement time. Specifically, in the same time when the message of the tripping and closing GOOSE signal of the protection device is read, the displacement time of the tripping and closing GOOSE signal is recorded, and the difference value between the displacement time of the tripping and closing GOOSE signal and the starting signal time is calculated and compared with the standard threshold value set in the tripping and closing monitoring reference template.

In step S150, when it is determined that the displacement time of the opening and closing GOOSE signal is not within the standard threshold, it is determined that the displacement time of the opening and closing GOOSE signal is out of range. And if the displacement time of the tripping and closing GOOSE signal is not within the standard threshold, indicating that the displacement time of the tripping and closing GOOSE signal is inconsistent with the preset value.

And monitoring a starting signal of the protection device and an action MMS signal of the protection device through a station control layer network, and monitoring a tripping and closing GOOSE signal of the protection device through a process layer network. After the protection device sends out the starting signal, the protection device does not necessarily send out the action signal, and the protection device can be restored to return immediately after starting or can start to act after a delay after starting, so that abnormal wave recording can be judged 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 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 tripping and closing GOOSE signal is shifted, whether the shifting is correct and whether the shifting time is within a standard threshold value. When the tripping and closing GOOSE signal is obtained and the tripping and closing GOOSE signal is not shifted, the signal loss is judged, if the tripping and closing GOOSE signal is lost, whether the optical power of a network port of the protection device and a connection port corresponding to the switch is lower or not needs to be confirmed, if the optical power of the optical port is lower, the optical fiber or the optical module is damaged, and an optical fiber link needs to be recovered. If the lower limit alarm is not exceeded, whether the protection device has a broken link alarm or not needs to be monitored. If the protection device has no broken chain alarm, the protection device does not output the tripping and closing GOOSE signal to shift, and the state of a GOOSE outlet pressing plate of the protection device needs to be monitored. If the GOOSE outlet pressing plate of the protection device is in an unentrapped state, the corresponding pressing plate is required to be inserted; if in the put-in state, the logic and arrangement of the protection device, which are well known to those skilled in the art, needs to be checked further. If there is a problem with the protection device logic and settings, the logic and settings need to be re-checked to restore the normal settings. When the tripping and closing GOOSE signal is shifted and the shifting state of the tripping and closing GOOSE signal is incorrect, the signal of the tripping and closing GOOSE signal is unexpected. When the deflection state of the tripping and closing GOOSE signal is correct and the deflection time of the tripping and closing GOOSE signal is not within the standard threshold, the deflection time of the tripping and closing GOOSE signal is out of range. Through multiple diagnoses of the tripping and closing GOOSE signals, accurate positioning of faults can be achieved, and fault processing efficiency of operators is improved.

In the tripping and closing loop, if the tripping operation cannot be normally performed, a starting failure signal exists; if the trip is normal, no failure signal is started. If the signal of the start failure exists, the signal of the start failure can be used as a single group, and can be assigned to the corresponding group for monitoring analysis. The diagnosis and positioning steps of the starting failure signal are consistent with those of the tripping and closing GOOSE signal.

Fig. 2 is a diagnostic positioning flowchart of an intelligent terminal tripping and closing anti-calibration GOOSE signal in a fault diagnosis positioning method for tripping and closing monitoring according to an embodiment of the invention. In fig. 2, the fault diagnosis positioning method may include:

in step S20, under the condition that the displacement time of the tripping and closing GOOSE signal is within the standard threshold, the tripping and closing anti-calibration GOOSE signal of the intelligent terminal is obtained. And if the displacement time of the tripping and closing GOOSE signal is within a standard threshold value, the tripping and closing GOOSE signal is normally operated. In order to further determine the fault location, it is therefore necessary to monitor and diagnose the intelligent terminal tripping and closing anti-calibration GOOSE signal. Specifically, in the time range from the first 3 seconds to the last 10 seconds of starting, the intelligent terminal tripping and closing anti-correction GOOSE signal of the protection device is obtained through the process layer network, the acquisition unit obtains the GOOSE message through the switch, and the acquired signal is transmitted to the management unit through the switch.

In step S21, under the condition that it is determined that the intelligent terminal tripping and closing anti-correction GOOSE signal is received, it is again determined whether the intelligent terminal tripping and closing anti-correction GOOSE signal is shifted. When receiving the intelligent terminal tripping and closing anti-correction GOOSE signal, the intelligent terminal tripping and closing anti-correction GOOSE signal is indicated to work in the tripping and closing loop. However, in order to determine whether the intelligent terminal tripping and closing anti-correction GOOSE signal works normally, further diagnosis about whether the intelligent terminal tripping and closing anti-correction GOOSE signal is shifted or not is needed. Specifically, the OFF-to-ON displacement state of the intelligent terminal tripping and closing anti-correction GOOSE signal can be obtained within the same time when the message of the intelligent terminal tripping and closing anti-correction GOOSE signal is read.

In step S210, under the condition that it is determined that the intelligent terminal tripping and closing anti-correction GOOSE signal does not shift, it is determined whether the intelligent terminal networking optical power exceeds a lower limit and/or whether an intelligent terminal link breakage alarm condition exists. The intelligent terminal tripping and closing anti-correction GOOSE signal does not generate deflection, which indicates that the intelligent terminal tripping and closing anti-correction GOOSE signal does not work normally, namely, a tripping and closing loop has faults. However, in order to determine the specific fault location of the intelligent terminal tripping and closing anti-correction GOOSE signal, further diagnosis is required to be carried out on the intelligent terminal tripping 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, when it is determined that the optical power of the intelligent terminal networking has a lower limit and/or an intelligent terminal link failure alarm exists, it is determined that a fault exists in the optical fiber or the optical module. If the optical port has lower limit of optical power and/or has 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 tripping and closing anti-correction GOOSE signal.

In step S212, under the condition that the networking optical power of the intelligent terminal does not exceed the lower limit and no link breakage alarm of the intelligent terminal exists, whether the direct-jump optical power of the intelligent terminal exceeds the lower limit and/or whether the link breakage alarm of the direct-jump optical port exists is judged. If the networking power of the protection device does not exceed the lower limit and has no broken link warning, the optical fiber link is normal, and the signal can be normally transmitted and monitored. However, in order to determine the specific fault location of the intelligent terminal tripping and closing anti-correction GOOSE signal, further diagnosis is required to be carried out on the intelligent terminal tripping and closing anti-correction GOOSE signal. Specifically, in the prior art, the diagnosis process may be to diagnose the direct-jump optical port of the intelligent terminal and the optical fiber link of the direct-jump optical port.

In step S213, under the condition that it is determined that the lower limit of the direct-jump optical power of the intelligent terminal exists and/or that the direct-jump optical link breakage alarm exists, the direct-jump optical link breakage fault exists. If the optical power of the straight tripping optical port is lower than the lower limit and/or the condition of broken link warning exists, the intelligent terminal cannot identify the tripping and closing GOOSE signal sent by the protection device, and further the tripping and closing anti-calibration GOOSE signal of the intelligent terminal cannot be sent, and the optical fiber link needs to be recovered to recover the identification of the tripping and closing GOOSE signal.

In step S214, if it is determined that the direct-jump optical power of the intelligent terminal does not exceed the lower limit and there is no direct-jump optical link failure alarm, it is determined whether the connection configuration of the virtual terminal of the switch-on/off GOOSE of the intelligent terminal is wrong. If the direct-jump optical power of the intelligent terminal does not exceed the lower limit and the direct-jump optical port broken link alarm does not exist, the intelligent terminal indicates that the direct-jump optical port optical fiber link of the intelligent terminal is normal, and signals can be normally transmitted and monitored. However, in order to determine the specific fault location of the intelligent terminal tripping and closing anti-correction GOOSE signal, further diagnosis needs to be performed on the intelligent terminal tripping and closing anti-correction GOOSE signal. Specifically, in the prior art, the diagnosis process may be to diagnose the connection configuration of the switch-off GOOSE virtual terminal of the intelligent terminal.

In step S215, if it is determined that the fault is configured in the virtual terminal connection of the switch-off GOOSE of the intelligent terminal, a fault of the virtual terminal is determined. If the virtual terminal connection configuration is wrong, the fault of the virtual terminal is indicated, so that the intelligent terminal cannot normally identify the tripping and closing GOOSE signal sent by the protection device, further, the tripping and closing anti-correction GOOSE signal of the intelligent terminal cannot be sent, and the tripping and closing anti-correction GOOSE deflection of the intelligent terminal cannot be sent.

In step S216, under the condition that it is determined that the connection configuration of the virtual terminal of the switch-off GOOSE of the intelligent terminal is correct, a logical fault of the anti-verification message output of the intelligent terminal is determined. If the connection configuration of the virtual terminal is correct, the virtual terminal is indicated to work normally, the intelligent terminal can normally identify the tripping and closing GOOSE signal sent by the protection device, and further the deflection of the tripping and closing anti-calibration GOOSE signal of the intelligent terminal can also be sent. However, in order to further determine the fault location, it is necessary to further check the output logic of the anti-calibration message of the intelligent terminal, which is well known to those skilled in the art.

In step S22, if it is determined that the intelligent terminal tripping and closing anti-correction GOOSE signal is shifted, it is determined whether the shifting state of the intelligent terminal tripping and closing anti-correction GOOSE signal is correct. And under the condition that the intelligent terminal tripping and closing anti-correction GOOSE signal is judged to be shifted, the networking optical port, the direct tripping optical port, the optical fiber link and the virtual terminal are normal in connection configuration. However, in order to determine whether the intelligent terminal tripping and closing anti-correction GOOSE signal works normally, further diagnosis on whether the intelligent terminal tripping and closing anti-correction GOOSE signal is in a correct displacement state is needed.

In step S220, under the condition that it is determined that the displacement state of the intelligent terminal tripping and closing anti-correction GOOSE signal is incorrect, it is determined that the signal of the intelligent terminal tripping and closing anti-correction GOOSE signal is unexpected. If the deflection state of the tripping and closing anti-correction GOOSE signal of the intelligent terminal is incorrect, the deflection state of the tripping and closing anti-correction GOOSE signal of the intelligent terminal is inconsistent with the preset value.

In step S23, if it is determined that the displacement state of the intelligent terminal opening and closing anti-correction GOOSE signal is correct, it is determined whether the displacement time of the intelligent terminal opening and closing anti-correction GOOSE signal is within a standard threshold. If the deflection state of the tripping and closing anti-correction GOOSE signal of the intelligent terminal is correct, the tripping and closing anti-correction GOOSE signal of the intelligent terminal is consistent with the preset deflection state. However, in order to determine whether the intelligent terminal tripping and closing anti-correction GOOSE signal works normally, further diagnosis on whether the intelligent terminal tripping and closing anti-correction GOOSE signal is normal or not needs to be carried out. Specifically, in the same time when the message of the intelligent terminal tripping and closing anti-correction GOOSE signal is read, the deflection time of the intelligent terminal tripping and closing anti-correction GOOSE signal is recorded, the difference value between the deflection time of the intelligent terminal tripping and closing anti-correction GOOSE signal and the starting signal time is calculated, and the difference value is compared with a standard threshold value set in a tripping and closing monitoring reference template.

In step S230, when it is determined that the shift time of the intelligent terminal tripping and closing anti-correction GOOSE signal is not within the standard threshold, it is determined that the shift time of the intelligent terminal tripping and closing anti-correction GOOSE signal is out of range. And if the deflection time of the tripping and closing anti-correction GOOSE signal of the intelligent terminal is not within the standard threshold, indicating that the deflection time of the tripping and closing anti-correction GOOSE signal of the intelligent terminal is inconsistent with the preset value.

After the tripping and closing GOOSE signal is diagnosed, the tripping and closing anti-calibration GOOSE signal of the intelligent terminal of the protection device is monitored through a process layer network. And under the condition that the deflection time of the tripping and closing GOOSE signal is judged to be within the standard threshold, sequentially judging whether the tripping and closing anti-calibration GOOSE signal of the intelligent terminal is acquired, whether deflection occurs, whether the deflection is correct and whether the deflection time is within the standard threshold. 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 obtained and are not shifted, diagnosing whether the optical power of a network port of the intelligent terminal and a connecting port corresponding to a switch is lower and/or whether the intelligent terminal has a broken chain condition, if the optical power of the optical port is lower, the optical fiber or the optical module is damaged, and the optical fiber link needs to be recovered. Under the condition that networking of the intelligent terminal is normal, diagnosing whether an optical power lower limit or a broken chain alarm occurs at a direct-jump optical port directly connected with the protection optical fiber, if the direct-jump optical port is broken, the intelligent terminal can not identify a tripping and closing GOOSE signal sent by the protection device, further the tripping and closing anti-calibration GOOSE signal of the intelligent terminal can not be sent, and an optical fiber link needs to be recovered for identifying the tripping and closing GOOSE signal. And under the condition that the networking port and the straight-jump port link of the intelligent terminal are normal, diagnosing whether the virtual terminal configuration between the intelligent terminal and the protection device is wrong or not. If the virtual terminal configuration between the intelligent terminal and the protection device is wrong, the intelligent terminal cannot normally identify the tripping and closing GOOSE signal sent by the protection device, and further the tripping and closing anti-correction GOOSE signal of the intelligent terminal cannot be sent, and the situation that the tripping and closing anti-correction GOOSE signal of the intelligent terminal is shifted is avoided. If the optical fiber link and the virtual terminal are normal, the output logic of the anti-correction message of the intelligent terminal needs to be confirmed, and the output logic of the anti-correction message of the intelligent terminal needs to be further checked, wherein the output logic of the anti-correction message of the intelligent terminal is well known to the person skilled in the art. If the output logic error of the message which can only be reversely checked 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 shifted and the shifting state of the intelligent terminal tripping and closing anti-correction GOOSE signal is incorrect, 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 multiple diagnosis of the intelligent terminal tripping and closing anti-correction GOOSE signal, accurate positioning of faults is further achieved, operators can process the faults in time, and stability of tripping and closing loops is guaranteed.

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

in step S30, under the condition that it is determined that the displacement time of the intelligent terminal tripping and closing anti-correction GOOSE signal is within the standard threshold, the stoping confirmation GOOSE signal is obtained. And if the deflection time of the tripping and closing anti-correction GOOSE signal of the intelligent terminal is within a standard threshold, the tripping and closing anti-correction GOOSE signal of the intelligent terminal is indicated to work normally. In order to determine the location of the fault even further, it is therefore necessary to monitor and diagnose the recovery acknowledgment GOOSE signal. Specifically, the acquiring unit may acquire the recovery confirmation GOOSE signal of the protection device through the process layer network within the time range from the first 3 seconds to the last 10 seconds of the start, acquire the GOOSE message through the switch, and transmit the acquired signal to the management unit through the switch.

In step S31, when it is determined that the recovery confirmation GOOSE signal is received, it is determined whether or not the recovery confirmation GOOSE signal is shifted. When the stope confirmation GOOSE signal is received, the stope confirmation GOOSE signal is indicated to work in the tripping and closing loop. However, in order to determine whether the recovery confirmation GOOSE signal is operating properly, further diagnosis of whether the recovery confirmation GOOSE signal is shifted or not is required. Specifically, the OFF-to-ON displacement state of the stope confirmed GOOSE signal may be obtained at the same time when the message of the stope confirmed GOOSE signal is read.

In step S310, if it is determined that the stope signal does not shift, it is determined whether the intelligent terminal operation loop is powered normally. The recovery confirmation GOOSE signal does not generate deflection, which indicates that the recovery confirmation GOOSE signal does not work normally, namely the tripping and closing loop has faults. But further diagnostics of the recovery confirmation GOOSE signal are needed in order to determine the specific fault location of the recovery confirmation GOOSE signal. Specifically, in the prior art, the diagnosis process may be to check the operation loop and the back plate terminal of the intelligent terminal, and confirm whether the operation loop of the intelligent 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 intelligent terminal exit confirmation message output logic fails. And if the monitoring power supply of the intelligent terminal operation loop is normal, indicating that the intelligent terminal operation loop works normally. To further determine the location of the fault, it is therefore necessary to examine the output logic of the intelligent terminal exit confirmation message, which is well known to those skilled in the art.

In step S312, in the case where it is determined that the intelligent terminal operation loop monitor power supply is not supplied, an operation loop failure is determined. If the intelligent terminal operation loop monitors that the power supply is not supplied, the intelligent terminal operation loop is not operated, and the recovery confirmation GOOSE signal deflection is not monitored.

In step S32, when it is determined that the recovery check GOOSE signal is shifted, it is determined whether or not the shift state of the recovery check GOOSE signal is correct. And under the condition that the recovery confirmation GOOSE signal is judged to be shifted, the intelligent terminal operation loop is indicated to be normal in power supply. However, in order to determine whether the recovery confirmation GOOSE signal is operating normally, further diagnosis of whether the recovery confirmation GOOSE signal is in a correct displacement state is required.

In step S320, if it is determined that the displacement state of the recovery confirmation GOOSE signal is incorrect, it is determined that the signal of the recovery confirmation GOOSE signal is unexpected. If the displacement state of the recovery confirmation GOOSE signal is incorrect, the displacement state of the recovery confirmation GOOSE signal is inconsistent with the preset value.

In step S33, when it is determined that the displacement state of the recovery confirmation GOOSE signal is correct, it is determined whether or not the displacement time of the recovery confirmation GOOSE signal is within the standard threshold. If the recovery confirmation GOOSE signal is correct in displacement state, the recovery confirmation GOOSE signal is consistent with the preset displacement state. However, in order to determine whether the recovery confirmation GOOSE signal is operating normally, it is necessary to perform further diagnosis of whether the recovery confirmation GOOSE signal is normal or not at a shift time. Specifically, the displacement time of the stope confirmation GOOSE signal may be recorded within the same time when the message of the stope confirmation GOOSE signal is read, and the difference between the displacement time of the stope confirmation GOOSE signal and the starting signal time is calculated and compared with the standard threshold set in the tripping and closing monitoring reference template.

In step S330, when it is determined that the displacement time of the recovery confirmation GOOSE signal is not within the standard threshold, it is determined that the displacement time of the recovery confirmation GOOSE signal is out of range. If the displacement time of the stope confirmed GOOSE signal is not within the standard threshold, the displacement time of the stope confirmed GOOSE signal is inconsistent with the preset value.

After the intelligent terminal tripping and closing anti-correction GOOSE signal is diagnosed, the recovery confirmation GOOSE signal of the protection device is monitored through the process layer network again. And under the condition that the deflection time of the intelligent terminal tripping and closing anti-correction GOOSE signal is judged to be within a standard threshold, judging whether the stoping confirmation GOOSE signal is acquired, whether deflection occurs, whether the deflection is correct or not and whether the deflection time is within the standard threshold in sequence. Under the condition that the stope confirmation GOOSE signal is obtained and the stope confirmation GOOSE signal is not shifted, the operation loop and the backboard terminal of the intelligent terminal are checked to confirm whether the operation loop of the intelligent terminal is normal or not, and under the condition that the operation loop of the intelligent terminal is confirmed to be normal, the output logic of the intelligent terminal outlet confirmation message is further checked, and is well known to the person skilled in the art. And under the condition that the power supply of the operation loop of the intelligent terminal is abnormal, determining the power failure of the operation loop of the intelligent terminal, and maintaining the power supply of the operation loop. When the recovery confirmation GOOSE signal is shifted and the shift state of the recovery confirmation GOOSE signal is incorrect, the signal of the recovery confirmation GOOSE signal is unexpected. And when the displacement state of the recovery confirmation GOOSE signal is correct and the displacement time of the recovery confirmation GOOSE signal is not within the standard threshold, the displacement time of the recovery confirmation GOOSE signal exceeds the range. Through multiple diagnosis of the recovery confirmation GOOSE signal, accurate positioning of faults is further achieved, and operators can conveniently find fault positions and timely maintain the faults.

FIG. 4 is a flow chart of the diagnostic positioning of the breaker position GOOSE signal in a fault diagnostic positioning method for tripping and closing monitoring according to an embodiment of the invention; in fig. 4, the fault diagnosis positioning method may include:

in step S40, if it is determined that the displacement time of the recovery confirm GOOSE signal is within the standard threshold, the breaker position GOOSE signal is acquired. If the displacement time of the stope confirmed GOOSE signal is within the standard threshold, the stope confirmed GOOSE signal is normally operated. In order to determine the location of the fault even further, it is therefore necessary to monitor and diagnose the breaker position GOOSE signal. Specifically, the method may include that in a time range from the first 3 seconds to the last 10 seconds of starting, a GOOSE signal of a breaker position of the protection device is obtained through a process layer network, a collecting unit obtains the GOOSE message through a switch, and the collected signal is transmitted to a 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 shifted. When the breaker position GOOSE signal is received, the condition that the breaker position GOOSE signal is working in the tripping and closing loop is indicated. However, in order to determine whether the breaker position GOOSE signal is operating properly, further diagnostics regarding the position of the breaker signal are required. Specifically, the OFF-to-ON displacement state of the breaker position GOOSE signal may be acquired at the same time when the message of the breaker position GOOSE signal is read.

In step S410, if it is determined that the breaker position GOOSE signal is not shifted, it is determined whether or not the on-board power supply is normal. The position GOOSE signal of the circuit breaker does not generate deflection, which indicates that the position GOOSE signal of the circuit breaker does not work normally, namely, the tripping and closing circuit has faults. But further diagnostics on the breaker position GOOSE signal are needed in order to determine the specific fault location of the breaker position GOOSE signal. Specifically, in the prior art, it is checked whether the primary wiring from the tripping and closing outlet of the intelligent terminal to the circuit breaker, the primary wiring from the opening board to the circuit breaker are normal, the opening board power supply, the circuit breaker split and close positions and the like.

In step S411, under the condition that the power supply of the power-on board is judged to be normal, the external wiring fault of the power-on board at the switch position of the intelligent terminal is determined. If the power supply of the power-on board is normal, the power supply of the power-on board is proved to have no fault. The external wiring of the switch position switch-in plate of the intelligent terminal has faults, and the external wiring of the switch position switch-in plate of the intelligent terminal needs to be overhauled.

In step S412, in the case where it is determined that the power supply of the on-board power supply is abnormal, a power supply wiring failure is determined. If the power supply of the power board is abnormal, the power supply of the power board is indicated to have wiring faults. The wiring of the power supply of the access panel needs to be overhauled.

In step S42, when it is determined that the breaker position GOOSE signal is shifted, it is determined whether or not the shift state of the breaker position GOOSE signal is correct. And under the condition that the position GOOSE signal of the circuit breaker is judged to be shifted, the power supply of the on-board power supply is normal. However, in order to determine whether the GOOSE signal is operating normally, further diagnosis of whether the GOOSE signal is in a correct state is required.

In step S420, if it is determined that the displacement state of the breaker position GOOSE signal is incorrect, it is determined that the signal of the breaker position GOOSE signal is unexpected. If the deflection state of the breaker position GOOSE signal is incorrect, the deflection state of the breaker position GOOSE signal is inconsistent with the preset value.

In step S43, when it is determined that the displacement state of the breaker position GOOSE signal is correct, it is determined whether or not the displacement time of the breaker position GOOSE signal is within the standard threshold. If the position change state of the breaker position GOOSE signal is correct, the condition that the breaker position GOOSE signal is consistent with the preset position change state is indicated. However, in order to determine whether the breaker position GOOSE signal is operating normally, further diagnosis of whether the breaker position GOOSE signal is normal or not is required. Specifically, the method may record the displacement time of the GOOSE signal at the breaker position within the same time when the message of the GOOSE signal at the breaker position is read, calculate the difference between the displacement time of the GOOSE signal at the breaker position and the starting signal time, and compare the difference with the standard threshold set in the tripping and closing monitoring reference template.

In step S430, if 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 range. And if the displacement time of the GOOSE signal of the breaker position is not within the standard threshold value, indicating that the displacement time of the GOOSE signal of the breaker position is inconsistent with the preset value.

In step S44, if it is determined that the displacement time of the breaker position GOOSE signal is within the standard threshold, it is determined that the tripping and closing circuit is normal. And if the deflection time of the breaker position GOOSE signal is within the standard threshold value, the breaker position GOOSE signal is indicated to work normally, and meanwhile, the tripping and closing loop is indicated to work normally.

After diagnosis of the recovery validation GOOSE signal, the breaker position GOOSE signal of the protection device is monitored again through the process layer network. And under the condition that the displacement time of the stope confirming GOOSE signal is judged to be within the standard threshold, judging whether the position GOOSE signal 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 in sequence. Under the condition that the position GOOSE signal of the circuit breaker is obtained and the position GOOSE signal of the circuit breaker is not shifted, checking whether primary wiring from an opening and closing outlet of an intelligent terminal operation circuit to the circuit breaker, primary wiring from an opening board to the circuit breaker are normal, opening board power supply, opening and closing positions of the circuit breaker and the like is carried out or not, and the purpose is to check whether power supply of the opening board power supply is normal or not. If the power supply of the power supply panel is normal, the external wiring fault of the power supply panel at the switch position of the intelligent terminal needs to be checked, and if the power supply of the power supply panel is abnormal, the wiring fault of the power supply panel can be determined, and the power supply panel needs to be rewiring, so that the normal power supply of the power supply panel is ensured. When the breaker position GOOSE signal is shifted and the shift state of the breaker position GOOSE signal is incorrect, the signal of the breaker position GOOSE signal is not expected. When the position change state of the breaker position GOOSE signal is correct and the position change time of the breaker position GOOSE signal is not within the standard threshold, the position change time of the breaker position GOOSE signal is out of range. If the deflection time of the GOOSE signal of the position of the circuit breaker is within the standard threshold value, the tripping and closing loop normally operates without faults. Through the multiple diagnosis of the GOOSE signals of the circuit breaker, the accurate positioning of faults is further realized, the efficiency of fault diagnosis is improved, and the tripping and closing loop can stably operate through timely processing of the faults.

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

in step S50, it is determined whether a tripping and closing GOOSE signal is received.

In step S51, if it is determined that the tripping and closing GOOSE signal is not received, it is determined whether the tripping and closing anti-calibration GOOSE signal of the intelligent terminal is received. And if the tripping and closing GOOSE signal is not received, indicating that the tripping and closing GOOSE signal does not send out or fails. 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, under the condition that it is determined that the intelligent terminal tripping and closing anti-calibration GOOSE signal is received, it is determined that the tripping and closing GOOSE signal is lost and/or phase sequence is wrong.

In step S52, if it is determined that the intelligent terminal tripping and closing anti-correction GOOSE signal is not received, it is determined whether or not a stoping acknowledgement GOOSE signal is received. If the intelligent terminal tripping and closing anti-correction GOOSE signal is not received, the intelligent terminal tripping and closing anti-correction GOOSE signal is not sent out or fails. To further determine the fault content, the recovery acknowledgment GOOSE signal may be further monitored and acquired.

In step S520, under the condition that the recovery confirmation GOOSE signal is received, the tripping and closing GOOSE signal and/or the intelligent terminal tripping and closing anti-calibration GOOSE signal loss and/or phase sequence error are/is determined.

In step S53, if it is determined that the recovery confirmation GOOSE signal is not received, it is determined whether or not the breaker position GOOSE signal is received. If the recovery confirmation GOOSE signal is not received, the recovery confirmation GOOSE signal is not sent out or fails. To further determine the fault content, the breaker position GOOSE signal may be further monitored and acquired.

In step S530, under the condition that it is determined that the breaker position GOOSE signal is received, it is determined that the signal loss and/or the phase sequence error exists in the tripping and closing GOOSE signal, the intelligent terminal tripping and closing anti-calibration GOOSE signal, and/or the stoping confirmation GOOSE signal.

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

The tripping and closing monitoring reference template in the management unit is set by adopting a tree structure of a father node and a child node. Taking the jump breaker a-phase GOOSE signal as an example, in fig. 7, the parent node may include the jump breaker a-phase GOOSE signal and the child node may include a-phase breaker position, start a-phase failure, a-phase trip outlet counter calibration, and a-phase trip outlet back calibration. The application type of the trip breaker a-phase GOOSE signal may include tripping to determine whether the protection device tripped GOOSE is normally issued. The protection trip signal under the dstripInfo data set is selected from all the data sets of the MMS for line protection and is associated to the father node to judge whether the protection trip MMS node is normal or not. The expected shift of the jump breaker S-phase GOOSE signal comprises 1, which is the shift of the jump breaker a-phase GOOSE signal from OFF to ON. If the deflection of the phase A GOOSE signal of the jump breaker is inconsistent with the preset value, the unexpected signal of the phase A GOOSE signal of the jump breaker is judged. And if the phase A GOOSE signal of the jump breaker is not received, judging that the signal is lost.

Specifically, for the four types of signals of the position, the start failure, the inverse calibration and the confirmation of the child node, the method can include:

Intelligent terminal a phase breaker position signal: the intelligent terminal A-phase breaker position signal comprises an application type of position, a displacement time of 100ms and an expected displacement 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 position signal of the A-phase breaker of the intelligent terminal exceeds 100ms, judging that the displacement time of the position signal of the A-phase breaker of the intelligent terminal exceeds the range; if the phase sequence of the position signal of the intelligent terminal A-phase breaker is not A-phase, judging the phase error sequence of the position signal of the intelligent terminal A-phase breaker; if the deflection 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.

The protection device activates the malfunctioning GOOSE signal: the protection device failure start GOOSE signal comprises an application type of failure start, a displacement time of 10ms and an expected displacement from OFF to ON. If the protection device failure GOOSE signal is not received, the protection device failure GOOSE signal is determined to be lost. If the deflection time of the protection device on-failure GOOSE signal exceeds 10ms, judging that the deflection time of the protection device on-failure GOOSE signal exceeds the range; if the shift phase sequence of the protection device start failure GOOSE signal is not the A phase, judging that the phase sequence of the intelligent protection device start failure GOOSE signal is wrong; if the shift of the protection device ON-failure GOOSE signal is not from OFF to ON, it is determined that the signal of the protection device ON-failure GOOSE signal is unexpected.

Intelligent terminal a phase trip outlet inverse correction signal: the intelligent terminal A-phase trip outlet inverse correction signal comprises an application type of inverse correction, the deflection time is 100ms, the A-phase current is less than 0.1In after 150ms, and the expected deflection is from OFF to ON. If the A-phase current is greater than or equal to 0.1In after 150ms, it is determined that the trip is abnormal. And if the phase A tripping outlet anti-calibration signal of the intelligent terminal is not received, judging that the phase A tripping outlet anti-calibration signal of the intelligent terminal is lost. If the deflection time of the phase A tripping outlet inverse correction signal of the intelligent terminal exceeds 100ms, judging that the deflection time of the phase A tripping outlet inverse correction signal of the intelligent terminal exceeds the range; if the phase sequence of the deflection of the phase A tripping outlet anti-calibration signal of the intelligent terminal is not the phase A, judging that the phase sequence of the phase A tripping outlet anti-calibration signal of the intelligent terminal is wrong; if the deflection of the intelligent terminal A phase trip outlet anti-correction signal is not from OFF to ON, the intelligent terminal A phase trip outlet anti-correction signal is judged to be unexpected.

Intelligent terminal A phase trip outlet stoping signal: the intelligent terminal A phase trip outlet stoping signal comprises an application type which is confirmed, the deflection time is 10ms, and the expected deflection is from OFF to ON. And if the phase A trip outlet stoping signal of the intelligent terminal is not received, judging that the phase A trip outlet stoping signal of the intelligent terminal is lost. If the displacement time of the phase A trip outlet stoping signal of the intelligent terminal exceeds 10ms, judging that the displacement time of the phase A trip outlet stoping signal of the intelligent terminal exceeds the range; if the phase sequence of the phase A tripping outlet stoping signal of the intelligent terminal is not the phase A, judging that the phase sequence of the phase A tripping outlet stoping signal of the intelligent terminal is wrong; if the deflection of the phase A trip outlet stoping signal of the intelligent terminal is not from OFF to ON, the signal of the phase A trip outlet stoping signal of the intelligent terminal is judged to be 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 one … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises an element.

The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and changes may be made to the present application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. which are within the spirit and principles of the present application are intended to be included within the scope of the claims of the present application.

Claims

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

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

judging whether the action MMS signal is received or not;

judging whether the tripping and closing GOOSE signal is received or not;

under the condition that the tripping and closing GOOSE signal is not shifted, determining that the tripping and closing GOOSE signal is lost, and judging whether the networking optical power of the protection device is lower than the lower limit or not and/or whether a protection device chain breakage alarm condition exists or not;

2. The fault diagnosis and localization method according to claim 1, characterized in that the fault diagnosis and localization method comprises:

under the condition that the action MMS signal is received, acquiring the tripping and closing GOOSE signal;

judging whether the tripping and closing GOOSE signal is received or not;

judging whether the stope confirmation GOOSE signal is received or not;

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

3. The fault diagnosis and localization method according to claim 1, characterized in that the fault diagnosis and localization method comprises:

4. A fault diagnosis and location method according to claim 3, characterized in that the fault diagnosis and location method comprises:

acquiring an intelligent terminal tripping and closing anti-correction GOOSE signal under the condition that the deflection time of the tripping and closing GOOSE signal is judged to be within a standard threshold value;

5. The fault diagnosis and location method according to claim 4, wherein the fault diagnosis and location method comprises:

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 shifted or not;

6. The fault diagnosis and location method according to claim 5, wherein the fault diagnosis and location method comprises:

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

7. The fault diagnosis and location method according to claim 6, wherein the fault diagnosis and location method comprises:

8. The fault diagnosis and localization method according to claim 7, wherein the fault diagnosis and localization method comprises:

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

9. The fault diagnosis and location method according to claim 8, wherein the fault diagnosis and location method comprises:

10. The fault diagnosis and localization method according to claim 1, wherein the trip-close GOOSE signal comprises a start-fail GOOSE signal.