CN117791857A - Method and system for automatically sending fault briefing - Google Patents

Abstract

The invention discloses a method and a system for automatically sending fault briefing, wherein the method comprises the steps of determining fault wave recording information required to be uploaded by a preset circuit based on states of a plurality of circuit disconnecting link in state information of primary equipment of a transformer station site, and sending the fault wave recording information to an intelligent wave recorder; judging whether a fixed value on a field fixed value list of the line protection device corresponding to the fault wave recording information is consistent with a preset protection reference value or not, and generating a judging result; based on the judging result, comparing whether the fault wave recording information is consistent with the fault wave recording information received by the intelligent wave recorder, and generating a comparison result; and when the comparison result is consistent, performing fault analysis on the fault wave recording information, generating a fault briefing, and sending the fault briefing to a dispatching attendant. The technical problem that the prior art brings great threat to safe and stable operation of the power grid is solved. According to the invention, whether the line is in the maintenance state or not is confirmed through the state of the primary equipment, and whether information needs to be sent or not is confirmed, so that the problem of judgment misalignment caused by massive useless information sending is avoided.

Description

Method and system for automatically sending fault briefing

Technical Field

The invention relates to the technical field of substations, in particular to a method and a system for automatically sending fault briefing.

Background

With the continuous improvement of social economy and development level, the urban process is obviously accelerated, the demand of society for electric power is continuously increased, and the electric load is increased year by year, so that higher requirements for power distribution network construction and electric power supply are also provided. The intelligent power distribution network is safe, reliable, economical, efficient, advanced in technology and environment-friendly, and is an important support for the healthy development of the power system.

However, with frequent occurrence of protection action events of the power system, the current judgment of the protection action condition still depends on the way that relay protection personnel go to a transformer substation to collect judgment action information, but the response speed and accuracy of the method are extremely limited by the capability of the near-far and the secondary security personnel of the transformer substation, the response and solving speed of the power accident can be greatly influenced, the further expansion of the fault range can be caused, and huge threats are brought to safe and stable operation of the power grid.

Disclosure of Invention

The invention provides a method and a system for automatically sending fault briefing, which solve the technical problems that the response speed and the accuracy of the prior art are greatly limited by the capability of the near-far and follow-up maintenance staff of a transformer substation, the response and the solving speed of an electric power accident are greatly influenced, the further expansion of a fault range is possibly caused, and the safety and the stability of a power grid are greatly threatened.

The automatic fault sending and reporting method provided by the first aspect of the invention is applied to the relay protection intelligent operation and maintenance master station; the relay protection intelligent operation and maintenance master station is respectively connected with the line protection device and the intelligent recorder; the method comprises the following steps:

responding to a fault query request, and acquiring primary equipment state information of a transformer substation site corresponding to the fault query request;

determining fault wave recording information required to be uploaded by a preset line based on the states of a plurality of line disconnecting link in the state information of the primary equipment of the transformer substation site, and sending the fault wave recording information to the intelligent wave recorder;

judging whether a fixed value on a site fixed value list of the line protection device corresponding to the fault wave recording information is consistent with a preset protection reference value or not, and generating a judging result;

based on the judging result, comparing whether the fault wave recording information is consistent with the fault wave recording information received by the intelligent wave recorder or not, and generating a comparison result;

and when the comparison result is consistent, performing fault analysis on the fault wave recording information, generating a fault briefing, and sending the fault briefing to a dispatching attendant.

Optionally, the system further relates to an OCS system, and the OCS system is connected with the relay protection intelligent operation and maintenance master station; the method further comprises the steps of:

Acquiring line running state information of a plurality of preset lines through the line protection device;

and acquiring the state information of the primary equipment of the substation site through the OCS system.

Optionally, the step of determining fault wave recording information required to be uploaded by a preset line based on the states of a plurality of line switches in the state information of the primary equipment of the transformer substation on site, and sending the fault wave recording information to the intelligent wave recorder includes:

acquiring a substation field primary device state corresponding to the substation field primary device state information and a line operation state corresponding to the line operation state information of each preset line;

determining a plurality of line disconnecting link states corresponding to each preset line based on the primary device state of the transformer substation site and the line operation state corresponding to each preset line;

judging whether a preset circuit corresponding to the circuit disconnecting link states needs to send a fault wave recording signal or not based on the circuit disconnecting link states;

if yes, acquiring fault information corresponding to the fault wave recording signal, generating fault wave recording information, and sending the fault wave recording information to the intelligent wave recorder;

if not, determining that the preset lines corresponding to the line disconnecting link states are in the maintenance state, and hanging maintenance cards on the preset lines.

Optionally, the plurality of line knife switch states include a first line knife switch state, a second line knife switch state, and a third line knife switch state; the step of judging whether the preset circuit corresponding to the circuit switch states needs to send fault recording signals or not based on the circuit switch states comprises the following steps:

when one of the first line disconnecting link state or the second line disconnecting link state is in a closed state and the third line disconnecting link state is in the closed state, judging that a fault recording signal is required to be sent to a preset line corresponding to a plurality of line disconnecting link states;

when the first line disconnecting link state, the second line disconnecting link state and the third line disconnecting link state are all in a separated state, the preset lines corresponding to the line disconnecting link states are judged to be in an overhauling state, and a fault wave recording signal is not required to be sent.

Optionally, the method further comprises:

setting and executing a fixed value list for the running state of the power grid by a relay protection personnel, and extracting the fixed value list of the line protection device;

comparing whether the fixed value of the execution fixed value list is consistent with the fixed value of the fixed value list;

if yes, taking the fixed value of the fixed value list as a preset protection reference value.

Optionally, the step of determining whether the fixed value on the field fixed value list of the line protection device corresponding to the fault wave recording information is consistent with a preset protection reference value, and generating a determination result includes:

acquiring a site fixed value list and a preset protection reference value of a line protection device corresponding to the fault wave recording information;

judging whether the fixed value on the field fixed value list is consistent with the preset protection reference value or not;

if yes, judging that the fixed value on the field fixed value list is consistent with the preset protection reference value.

Optionally, the step of comparing whether the fault record information is consistent with the fault record information received by the intelligent recorder based on the judging result, and generating a comparison result includes:

when the judging result is that the fixed value on the field fixed value list is consistent with the preset protection reference value, comparing whether the wave recording file of the fault wave recording information is consistent with the wave recording file of the fault wave recording information received by the intelligent wave recorder or not;

if yes, judging that the wave recording file of the fault wave recording information is consistent with the wave recording file of the fault wave recording information received by the intelligent wave recorder.

Optionally, when the comparison result is consistent, performing fault analysis on the fault record information, generating a fault briefing, and sending the fault briefing to a scheduling attendant, where the step includes:

When the comparison result is consistent, judging whether fault current exists in the fault wave recording information or whether the fault power direction is positive;

if the fault current does not exist or the fault power direction is the opposite direction, judging that the protection action of the protection device corresponding to the fault analysis is incorrect;

judging whether the homologous comparison in the fault wave recording information is normal or not;

if the homology comparison is abnormal, generating a homology comparison abnormal result;

and carrying out homologous comparison on the record files of the main protection device and the main protection device which are arranged at the same interval in the fault record information, generating a fault briefing according to the homologous comparison result, and sending the fault briefing to a scheduling attendant.

Optionally, the step of performing homology comparison on the recording files of the main protection device and the main protection device at the same interval in the fault recording information, generating a fault briefing according to the homology comparison result, and sending the fault briefing to a scheduling attendant includes:

acquiring the recording files of a main protection device and a main protection device which are arranged at the same interval in the fault recording information;

calculating a current difference value between a fault current value in the wave recording file of the main protection device and the main protection device;

Calculating a time difference value between a fault time value in the wave recording file of the main protection device and the main protection device;

calculating a ranging difference value between a fault ranging value in the wave recording file of the main protection device and the main protection device;

judging whether the current difference value is smaller than a preset current threshold value, whether the time difference value is smaller than a preset time error threshold value and whether the ranging difference value is smaller than a preset ranging error threshold value;

if the current difference value is smaller than the preset current threshold value, the time difference value is smaller than the preset time error threshold value and the ranging difference value is smaller than the preset ranging error threshold value, judging that the homology comparison is successful, and when the fixed value on the site fixed value list corresponding to the main protection device and the main protection device respectively is consistent with the preset protection reference value, generating a fault briefing and sending the fault briefing to a dispatching attendant.

The automatic fault sending bulletin system provided by the second aspect of the invention is applied to the relay protection intelligent operation and maintenance master station; the relay protection intelligent operation and maintenance master station is respectively connected with the line protection device and the intelligent recorder; the system comprises:

The acquisition module is used for responding to the fault query request and acquiring the state information of the primary equipment of the transformer substation field corresponding to the fault query request;

the fault wave recording module is used for determining fault wave recording information required to be uploaded by a preset line based on the states of a plurality of line disconnecting link in the state information of the primary equipment of the transformer substation site and sending the fault wave recording information to the intelligent wave recorder;

the judging module is used for judging whether the fixed value on the field fixed value list of the line protection device corresponding to the fault wave recording information is consistent with a preset protection reference value or not, and generating a judging result;

the comparison module is used for comparing whether the fault record information is consistent with the fault record information received by the intelligent recorder or not based on the judging result, and generating a comparison result;

and the fault briefing module is used for carrying out fault analysis on the fault wave recording information when the comparison result is consistent, generating a fault briefing and sending the fault briefing to a dispatching attendant.

From the above technical scheme, the invention has the following advantages:

1. according to the invention, whether the line is in the maintenance state or not is confirmed through the state of the primary equipment, and whether information needs to be sent or not is confirmed, so that the problem of judgment misalignment caused by massive useless information sending is avoided.

2. The fault information is analyzed and judged, and through the data comparison of the two sets of protection devices and the fixed value comparison, whether the protection devices have the condition of setting fixed value errors or the condition of sending information wrongly can be checked, so that the reliability of sending the fault information is ensured.

3. By encoding the fault message, the fault message capable of being confirmed to be sent can be sent to an elink and a mobile phone short message of a designated person, so that the line protection action condition can be timely informed.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained from these drawings without inventive faculty for a person skilled in the art.

FIG. 1 is a flowchart illustrating steps of a method for automatically sending a fault bulletin according to an embodiment of the present invention;

fig. 2 is a schematic diagram of an architecture of an automatic fault notification apparatus according to a first embodiment of the present invention;

FIG. 3 is a flowchart illustrating steps of a method for automatically sending a fault briefing according to a second embodiment of the present invention;

Fig. 4 is a logic diagram of fault record information received by the relay protection intelligent operation and maintenance master station according to a second embodiment of the present invention;

fig. 5 is a schematic diagram of a circuit connection according to a second embodiment of the present invention;

FIG. 6 is a logic diagram of analysis of fault log information according to a second embodiment of the present invention;

fig. 7 is a block diagram of an automatic fault sending system according to a third embodiment of the present invention.

Detailed Description

The embodiment of the invention provides an automatic fault sending brief method and system, which are used for solving the technical problems that the response speed and accuracy of the prior art are greatly limited by the capability of the near-far and secondary security staff of a transformer substation, the response and solving speed of an electric power accident are greatly influenced, the fault range is possibly further enlarged, and a great threat is brought to the safe and stable operation of a power grid.

In order to make the objects, features and advantages of the present invention more comprehensible, the technical solutions in the embodiments of the present invention are described in detail below with reference to the accompanying drawings, and it is apparent that the embodiments described below are only some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1, fig. 1 is a flowchart illustrating steps of a method for automatically sending a fault briefing according to a first embodiment of the present invention.

The method for automatically sending the fault briefing is applied to the relay intelligent operation and maintenance master station; the relay protection intelligent operation and maintenance master station is respectively connected with the line protection device and the intelligent recorder; the method comprises the following steps:

and step 101, responding to the fault query request, and acquiring the state information of the primary equipment of the transformer substation field corresponding to the fault query request.

The fault query request refers to a request for performing fault query on each device and line of the substation.

The substation field primary device state information refers to current operation state information of the substation field primary device, and can be extracted from an OCS system.

Referring to the schematic diagram of the architecture of the automatic fault sending and reporting device shown in fig. 2, the automatic fault sending and reporting device mainly comprises a line protection device, an intelligent recorder, a relay protection intelligent operation and maintenance master station, an OCS system, a firewall, a forward and reverse isolation device and an intelligent short message server. The method is particularly applied to the relay intelligent operation and maintenance master station. The relay protection intelligent operation and maintenance master station is connected with the intelligent recorder and the protection device in sequence through the dispatching data network, so that real-time data transmission is realized. Meanwhile, the intelligent recorder is connected with the OCS through the forward and reverse isolating device to conduct interactive data.

The relay intelligent operation and maintenance master station is used for carrying out data through a firewall and an OCS system and is connected with the three-area comprehensive data network in sequence through a forward and reverse isolation device.

Specifically, the line protection device and the relay intelligent operation and maintenance master station communicate through a switch, an intelligent recording management unit and secondary security, the relay intelligent operation and maintenance master station and the OCS communicate through a firewall, the relay intelligent operation and maintenance master station and the intelligent short message server communicate through a forward and reverse isolation device and a three-area comprehensive data network, and the action information of the protection device is sent up and the fault brief fixed point is issued.

In the implementation, when the relay protection intelligent operation and maintenance master station responds to the received fault inquiry request, the state information of the primary equipment of the substation site and the line operation information of the states of a plurality of line disconnecting links of the protection device are obtained through the OCS system.

And 102, determining fault wave recording information required to be uploaded by a preset line based on the states of a plurality of line disconnecting link in the state information of the primary equipment of the transformer substation site, and sending the fault wave recording information to an intelligent wave recorder.

It should be noted that the states of the plurality of line switches include states of 3 line switches, including a closed state or a separated state of the line switch 4G, the bus switch 1G, and the bus switch 2G, which correspond to each other.

The fault record information comprises fault time, fault equipment, fault current, fault phase, fault distance measurement information and the like.

Specifically, when a disturbance or a fault occurs in the power grid system and the fault quantity exceeds a preset protection set value, the protection can act, and the line protection device at the moment can generate fault wave recording and automatically send the fault wave recording to the intelligent wave recorder, and then send the fault wave recording to the relay protection intelligent operation and maintenance master station through the dispatching data network. The preset protection setting value is determined according to a setting value list, and information of the preset protection setting value exists on the relay protection intelligent operation and maintenance master station.

In the specific implementation, the line disconnecting link 4G, the bus disconnecting link 1G and the bus disconnecting link 2G which are acquired by the primary device state information of the transformer substation field and the protection device are acquired, and when the line disconnecting link states of the line disconnecting link 4G, the bus disconnecting link 1G and the bus disconnecting link 2G are all in a separated state, the relay protection intelligent operation and maintenance master station automatically hangs a maintenance card on the line, when one of the bus disconnecting link 1G or the bus disconnecting link 2G is in a closed state and the line disconnecting link 4G is in a closed state, the maintenance card is automatically canceled, the fault is determined, the fault time, the fault device, the fault current, the fault phase, the fault ranging and other information are acquired, the fault wave recording information is generated, the fault wave recording signals and the fault wave recording information are sent to the intelligent wave recorder, and the line protection device and the intelligent wave recorder respectively send the respective fault wave recording information to the relay protection intelligent operation and maintenance master station through a dispatching data network.

And step 103, judging whether the fixed value on the field fixed value list of the line protection device corresponding to the fault wave recording information is consistent with a preset protection reference value, and generating a judging result.

The intelligent operation and maintenance master station acquires the site fixed value list of the line protection device from the fault wave recording information and acquires the protection reference value from the fixed value interface of the master station.

In a specific implementation, comparing the fixed value of the field fixed value list of the line protection device with the protection reference value to determine whether the fixed value is consistent, if so, executing step 104. If the values are not consistent, the risk of incorrect setting of the protection reference value exists, and whether the inconsistent fixed values can cause incorrect protection actions needs to be further analyzed.

And 104, comparing whether the fault record information is consistent with the fault record information received by the intelligent recorder based on the judging result, and generating a comparison result.

The determination result is that the fixed value of the field fixed value list is identical to the protection reference value.

In the specific implementation, when the fixed value of the field fixed value list is consistent with the protection reference value, whether the fault wave recording information of the line protection device is consistent with the wave recording files corresponding to the fault wave recording information received by the intelligent wave recorder respectively is also required to be judged, and the correctness of the uploaded files is confirmed.

And 105, when the comparison result is consistent, performing fault analysis on the fault wave recording information, generating a fault briefing, and sending the fault briefing to a dispatching attendant.

In the implementation, when the comparison results of the fault wave recording information of the line protection device and the wave recording files corresponding to the fault wave recording information received by the intelligent wave recorder are consistent, further fault analysis is needed to be carried out on fault wave recording waveforms in the fault wave recording information, whether fault current exists or not is analyzed, whether the fault power direction is in the forward direction or not, and whether the homology comparison is normal or not is judged; if no fault current or power direction is reverse, the relay intelligent operation and maintenance master station judges that the operation is incorrect; if the homology comparison is abnormal, the relay intelligent operation and maintenance master station gives an abnormal result. And comparing the recorded files of the main protection device and the main protection device at the same interval to ensure that both sets of protection act correctly. And the relay protection intelligent operation and maintenance master station synthesizes the analysis conditions and outputs a fault briefing. The fault briefing content comprises fault equipment, fault time, fault current, fault phase, fault distance measurement, whether correct action is protected, incorrect action reasons and the like.

And the output fault briefs are transmitted to professional responsible persons, dispatch operators on duty and related responsible leaders in a fixed point mode through a three-area comprehensive data network in a mode of mobile phone short messages or elink. Timely informing the line protection action condition. Specifically, the data is from three areas to one area, and a positive and negative isolation device is required, which is a network security requirement, so that the security of the data transmission process is ensured.

Referring to fig. 3-6, fig. 3 is a flowchart illustrating steps of a method for automatically sending a fault notification according to a second embodiment of the present invention.

The method for automatically sending the fault briefing is applied to the relay intelligent operation and maintenance master station; the relay protection intelligent operation and maintenance master station is respectively connected with the line protection device and the intelligent recorder; the method comprises the following steps:

optionally, the system also relates to an OCS system, and the OCS system is connected with the relay protection intelligent operation and maintenance master station; before step 201, the method further comprises the following steps S11-S12:

s11, acquiring line running state information of a plurality of preset lines through a line protection device;

s12, acquiring the state information of the primary equipment of the substation site through an OCS system.

It should be noted that, referring to fig. 2, the relay intelligent operation and maintenance master station is connected with the OCS system, and the relay intelligent operation and maintenance master station further performs data through the firewall and the OCS system.

The preset lines refer to the lines corresponding to the transformer substations needing line fault analysis.

In specific implementation, the line protection device collects preset line operation state information, including a line disconnecting link 4G, a bus disconnecting link 1G and a bus disconnecting link 2G.

And acquiring the state of the primary equipment of the substation site by the OCS system, and obtaining the state information of the primary equipment of the substation site.

Step 201, responding to a fault query request, and acquiring primary equipment state information of a transformer substation site corresponding to the fault query request.

In the embodiment of the present invention, the specific implementation of step 201 is similar to that of step 101, and will not be described herein.

And 202, determining fault wave recording information required to be uploaded by a preset line based on the states of a plurality of line disconnecting link in the state information of the primary equipment of the transformer substation site, and sending the fault wave recording information to an intelligent wave recorder.

Optionally, step 202 includes the following steps S21-S25:

s21, acquiring a substation site primary equipment state corresponding to substation site primary equipment state information and a line operation state corresponding to line operation state information of each preset line;

s22, determining a plurality of line disconnecting link states corresponding to each preset line based on the primary equipment state of the transformer substation site and the line operation state corresponding to each preset line;

s23, judging whether a preset line corresponding to the states of the line disconnecting link needs to send a fault wave recording signal or not based on the states of the line disconnecting links;

s24, if yes, acquiring fault information corresponding to the fault wave recording signals, generating fault wave recording information, and sending the fault wave recording information to the intelligent wave recorder;

and S25, if not, determining that the preset line corresponding to the states of the plurality of line disconnecting link is in an overhaul state, and hanging an overhaul plate on the preset line.

In order to ensure the reliability of the automatic fault sending and reporting method, the invention divides the automatic fault sending and reporting method into three processes: the method comprises the steps of receiving fault information, analyzing the fault information, sending the fault information, wherein the information content spans from a first area network to a third area network, relates to a multi-interface network, and needs to be sent in a fault report form in order to meet the related unified management.

Referring to fig. 4, the logic diagram of fault information received by the relay protection intelligent operation and maintenance master station, wherein the judging relation of fault information received by the relay protection intelligent operation and maintenance master station includes:

1) The relay intelligent operation and maintenance master station performs data interaction with the OCS system;

2) The relay intelligent operation and maintenance master station receives that the bus disconnecting link 1G, the bus disconnecting link 2G and the disconnecting link 4G of the line are all in separated positions;

3) The bus disconnecting link 1G and the bus disconnecting link 2G of the relay protection intelligent operation and maintenance master station are in a closing position, and the disconnecting link of the circuit disconnecting link 4G is in a closing position;

4) The secondary intelligent operation and maintenance master station automatically cancels the overhaul plate;

5) And fault information is automatically uploaded to the relay intelligent operation and maintenance master station.

Specifically, the relay intelligent operation and maintenance master station can interact with the OCS in information, and the relay intelligent operation and maintenance master station judges whether the line is in any state according to the states of the bus knife switch 1G, the bus knife switch 2G and the line knife switch 4G on the line, and confirms whether the line is operated or overhauled, so that whether the relay intelligent operation and maintenance master station needs to hang an overhauling card or not is confirmed, and unnecessary information is shielded. Referring to fig. 5, if the busbar knife switch 1G, the busbar knife switch 2G and the line knife switch 4G are all at separate positions, the line is determined to be in a maintenance state, the relay protection intelligent operation and maintenance master station hangs the line maintenance cards, and the line information is automatically shielded.

If one of the bus knife switch 1G and the bus knife switch 2G is in the closed position and the circuit knife switch 4G is closed, the circuit is in the running or hot standby state, the main station automatically cancels the overhaul plate, and the fault wave recording information of the circuit can be automatically sent.

In a specific embodiment, the relay intelligent operation and maintenance master station performs data interaction with the OCS through a firewall, and the OCS can acquire the state of primary equipment of the substation site to confirm whether a line is in an overhaul state; referring to fig. 5, if the disconnecting link of the busbar disconnecting link 1G, the busbar disconnecting link 2G and the line disconnecting link 4G are all at separate positions, the line is determined to be in an overhaul state, and the relay protection intelligent operation and maintenance master station automatically hangs an overhaul board on the line and automatically shields fault wave recording signals. If one of the bus knife switch 1G or the bus knife switch 2G is closed and the line knife switch 4G is closed, the overhaul plate is automatically canceled, and the fault wave recording signal can be automatically sent.

Optionally, the plurality of line knife switch states includes a first line knife switch state, a second line knife switch state, and a third line knife switch state; step S23 includes the following steps S31-S32:

s31, when one of the first line disconnecting link state or the second line disconnecting link state is in a closed state and the third line disconnecting link state is in the closed state, determining that a fault recording signal is required to be sent to a preset line corresponding to the line disconnecting link states;

S32, when the first line disconnecting link state, the second line disconnecting link state and the third line disconnecting link state are all in the separated state, the preset lines corresponding to the line disconnecting link states are judged to be in the maintenance state, and the fault recording signal is not required to be sent.

The first line disconnecting link state, the second line disconnecting link state and the third line disconnecting link state are the disconnecting link states of the bus disconnecting link 1G, the bus disconnecting link 2G and the line disconnecting link 4G, respectively.

In specific implementation, referring to fig. 5, if the disconnecting link of the busbar disconnecting link 1G, the busbar disconnecting link 2G and the line disconnecting link 4G are all at separate positions, the line is determined to be in an overhaul state, and the relay protection intelligent operation and maintenance master station automatically hangs an overhaul card on the line and automatically shields fault wave recording signals. If one of the bus knife switch 1G or the bus knife switch 2G is closed and the line knife switch 4G is closed, the overhaul plate is automatically canceled, and the fault wave recording signal can be automatically sent.

Optionally, the method further comprises the following steps S41-S43:

s41, formulating and executing a fixed value list for the running state of the power grid by a relay protection personnel, and extracting the fixed value list of the line protection device;

s42, comparing whether the fixed value of the execution fixed value list is consistent with the fixed value of the fixed value list;

and S43, if yes, taking the fixed value of the fixed value list as a preset protection reference value.

When the method is implemented in particular, a special relay protection personnel can output an execution fixed value list according to the running condition of the power grid, the execution fixed value list is imported to the relay protection intelligent operation and maintenance master station, the fixed value of the calling line protection device and the imported execution fixed value list can be automatically compared, and if the comparison result is consistent, the fixed value of the calling line protection device is set to be a reference value, namely a preset protection reference value.

And 203, acquiring a site fixed value list and a preset protection reference value of the line protection device corresponding to the fault wave recording information.

The method is characterized in that a site fixed value list of the line protection device is extracted through fault wave recording information, and a preset protection reference value is extracted through a master station fixed value interface of the relay protection intelligent operation and maintenance master station.

And 204, judging whether the fixed value on the field fixed value list is consistent with a preset protection reference value.

When the field protection action is performed, comparing the fixed value on the field fixed value list with a preset protection reference value, and judging whether the fixed value on the field fixed value list is consistent with the preset protection reference value.

And 205, if yes, judging that the fixed value on the field fixed value list is consistent with the preset protection reference value.

It should be noted that if the fixed value on the field fixed value list is consistent with the preset protection reference value, the fixed value on the field fixed value list is judged to be consistent with the preset protection reference value, if the fixed value is inconsistent with the preset protection reference value, the risk of setting an error of the preset protection fixed value exists, and whether the inconsistent fixed value can cause incorrect protection action is further analyzed.

Specifically, the fixed value protection must be consistent with a preset protection reference value, and if the fixed value protection is inconsistent with the preset protection reference value, the fixed value protection is set by mistake, so that a large risk exists.

And 206, comparing whether the fault record information is consistent with the fault record information received by the intelligent recorder based on the judging result, and generating a comparison result.

Optionally, step 206 includes the following steps S51-S52:

s51, when the judgment result is that the fixed value on the field fixed value list is consistent with the preset protection reference value, comparing whether the wave recording file of the fault wave recording information is consistent with the wave recording file of the fault wave recording information received by the intelligent wave recorder;

and S52, if so, judging that the wave recording file of the fault wave recording information is consistent with the wave recording file of the fault wave recording information received by the intelligent wave recorder.

When the fixed value on the site fixed value list is consistent with the preset protection reference value, checking the fault record file in the fault record information, collecting fault time, fault equipment, fault current, fault phase, fault distance measurement information and the like, and comparing the record file of the protection device with the record file of the intelligent recorder to confirm that the uploading file is correct.

And 207, when the comparison result is consistent, performing fault analysis on the fault record information, generating a fault briefing, and transmitting the fault briefing to a dispatching attendant.

Optionally, step 207 includes the following steps S61-S65:

s61, judging whether fault current exists in the fault wave recording information or whether the fault power direction is positive when the comparison result is consistent;

s62, if no fault current exists or the fault power direction is the opposite direction, judging that the protection action of the protection device corresponding to the fault analysis is incorrect;

s63, judging whether the homologous comparison in the fault wave recording information is normal or not;

s64, if the homologous comparison is abnormal, generating a homologous comparison abnormal result;

s65, carrying out homologous comparison on the recording files of the main protection device and the main protection device which are at the same interval in the fault recording information, generating a fault briefing according to the homologous comparison result, and sending the fault briefing to a dispatching attendant.

When the wave recording file of the fault wave recording information is consistent with the wave recording file of the fault wave recording information received by the intelligent wave recorder, the relay-protection intelligent operation and maintenance master station analyzes fault wave recording waveforms in the fault wave recording information, analyzes whether fault current exists, whether the fault power direction is in the forward direction or not, and whether the homology comparison is normal or not; if no fault current or fault power direction is reverse, the relay intelligent operation and maintenance master station judges that the operation is incorrect; if the homology comparison is abnormal, the relay intelligent operation and maintenance master station gives out a result of the homology comparison abnormality. And comparing the recorded files of the main protection device and the main protection device at the same interval to ensure that both sets of protection act correctly. And the relay protection intelligent operation and maintenance master station synthesizes the analysis conditions and outputs a fault briefing. The fault briefing content comprises fault equipment, fault time, fault current, fault phase, fault distance measurement, whether correct action is protected, incorrect action reasons and the like.

And the output fault briefs are transmitted to professional responsible persons, dispatch operators on duty and related responsible leaders in a fixed point mode through a three-area comprehensive data network in a mode of mobile phone short messages or elink. Timely informing the line protection action condition. Specifically, the data is from three areas to one area, and a positive and negative isolation device is required, which is a network security requirement, so that the security of the data transmission process is ensured.

Optionally, step S65 includes the following steps S71-S76:

s71, acquiring recording files of a main protection device and a main protection device which are arranged at the same interval in fault recording information;

s72, calculating a current difference value between a fault current value in the wave recording file of the main protection device and the second protection device;

s73, calculating a time difference value between a fault time value in the wave recording file of the main protection device and the second protection device;

s74, calculating a ranging difference value between the fault ranging value in the wave recording file of the main protection device and the second protection device;

s75, judging whether the current difference value is smaller than a preset current threshold value, whether the time difference value is smaller than a preset time error threshold value and whether the ranging difference value is smaller than a preset ranging error threshold value;

And S76, if the current difference value is smaller than a preset current threshold value, the time difference value is smaller than a preset time error threshold value and the distance measurement difference value is smaller than a preset distance measurement error threshold value, judging that the homology comparison is successful, and when the fixed value on the site fixed value list corresponding to the main protection device and the main protection device respectively is consistent with a preset protection reference value, generating a fault brief report and sending the fault brief report to a dispatching attendant.

It should be noted that, referring to the fault record information analysis logic diagram shown in fig. 6, the fault record information analysis judgment relationship includes:

1) The line protection device automatically uploads fault wave recording information to the relay protection intelligent operation and maintenance master station through the intelligent wave recorder;

2) The secondary protection intelligent operation and maintenance master station carries out homologous comparison on two sets of protection action wave recording information of the main protection device and the main protection device at the same interval, and the secondary protection intelligent operation and maintenance master station compares fault time, fault equipment, fault current, fault phase and fault distance measurement information;

3) The relay protection intelligent operation and maintenance master station automatically compares the two sets of site fixed value sheets with a preset protection reference value;

4) The relay intelligent operation and maintenance master station automatically analyzes fault wave recording information and analyzes whether fault current, fault direction and homology comparison are normal or not;

5) And the relay intelligent operation and maintenance master station generates a fault report by comparing error-free information.

When the fault wave recording information is uploaded to the secondary protection intelligent operation and maintenance master station, the secondary protection intelligent operation and maintenance master station carries out homologous comparison on two sets of protection action wave recording information of a main protection device and a main protection device at the same interval In the fault wave recording information, and the master station compares fault time, fault equipment, fault current, fault phase and fault distance measurement information, wherein I1-I2 is less than 0.05In, T1-T2 is less than Tn, and L1-L2 is less than Ln; wherein I1, T1 and L1 are fault current, fault time and fault distance measurement of a main protection device, I2, T2 and L2 are fault current, fault time and fault distance measurement of a main protection device and a main protection device, in is rated current, and 0.5In is a preset current threshold; tn and Ln are errors, and specific values are respectively T1 x 5% and L1 x 5%, wherein Tn is a preset time error threshold value, and Ln is a preset ranging error threshold value. If the comparison information meets the working requirements, the homologous comparison is successful, then two sets of fixed values corresponding to the fixed value list of the protection site are carried out with a preset protection reference value, and if the reference value comparison is completely consistent, a protection fault report is generated; and otherwise, returning a protection recheck command.

The method comprises the steps of encoding a fault message which can be transmitted, generating the fault message in an internal network I area of a relay protection system, and identifying an elink or a mobile phone short message which is transmitted to a specific person in an area III by the code after the encoding is finished, wherein the method specifically comprises the following steps: 1) The I area carries out special numbering on the sent fault briefing pairs, sequentially sends the fault briefing pairs to forward physical isolation equipment by using TCP or UDP protocols, and puts the sent message data into a sending buffer; 2) After receiving data from the forward physical isolation equipment, the area III performs sequence number verification, if the message with the expected sequence number is received, the message data is directly processed, the message data is sent to a designated responsibility and related department leader, otherwise, the message data is put into a receiving buffer memory to wait for processing; 3) If the expected message data is not received in the set time, the message is considered to be lost, an out-of-order message number text file is generated, and the out-of-order message number text file is sent to the area I through reverse physical isolation equipment; 4) The I area processes the text file sent from the III area, finds out the lost message from the sending buffer memory, and resends the lost message; 5) And after receiving the designated message data, the III area processes the data again and processes the cached message data in the receiving cache area. Finally, the fault briefing is transmitted to professional responsible persons, dispatch operators on duty and related responsible leaders in a fixed point mode through a three-area comprehensive data network in a mobile phone short message or elink mode, and the line protection action condition is timely informed.

Referring to fig. 7, fig. 7 is a block diagram of an automatic fault sending system according to a third embodiment of the present invention.

The automatic fault sending bulletin system provided by the invention is applied to a relay intelligent operation and maintenance master station; the relay protection intelligent operation and maintenance master station is respectively connected with the line protection device and the intelligent recorder; the system comprises:

an obtaining module 701, configured to respond to a fault query request, and obtain primary device state information of a substation field corresponding to the fault query request;

the fault wave recording module 702 is configured to determine fault wave recording information required to be uploaded by a preset line based on states of a plurality of line switches in state information of primary equipment of a transformer substation, and send the fault wave recording information to the intelligent wave recorder;

the judging module 703 is configured to judge whether a fixed value on a field fixed value list of the line protection device corresponding to the fault wave recording information is consistent with a preset protection reference value, and generate a judging result;

the comparison module 704 is configured to compare whether the fault record information is consistent with the fault record information received by the intelligent recorder based on the determination result, and generate a comparison result;

and the fault briefing module 705 is configured to perform fault analysis on the fault record information when the comparison result is consistent, generate a fault briefing, and send the fault briefing to a dispatch attendant.

Optionally, the system also relates to an OCS system, and the OCS system is connected with the relay protection intelligent operation and maintenance master station; the system further comprises:

the acquisition sub-module is used for acquiring line running state information of a plurality of preset lines through the line protection device;

and the acquisition sub-module is used for acquiring the state information of the primary equipment of the substation site through the OCS system.

Optionally, the fault log module 702 includes:

the line operation state sub-module is used for acquiring the primary equipment state of the transformer station site corresponding to the primary equipment state information of the transformer station site and the line operation state corresponding to the line operation state information of each preset line;

the line disconnecting link state submodule is used for determining a plurality of line disconnecting link states corresponding to each preset line based on the primary equipment state of the transformer substation site and the line running state corresponding to each preset line;

the first judging submodule is used for judging whether a preset line corresponding to the line disconnecting link states needs to send a fault wave recording signal or not based on the line disconnecting link states;

the fault information sub-module is used for acquiring fault information corresponding to the fault wave recording signal if the fault information sub-module is in the fault state, generating fault wave recording information and sending the fault wave recording information to the intelligent wave recorder;

and the overhaul submodule is used for determining that a preset circuit corresponding to the states of the plurality of circuit disconnecting link is in an overhaul state if the circuit disconnecting link is not in the overhaul state, and hanging an overhaul card on the preset circuit.

Optionally, the plurality of line knife switch states includes a first line knife switch state, a second line knife switch state, and a third line knife switch state; the first judgment submodule includes:

the closed state submodule is used for judging that a fault wave recording signal is required to be sent to a preset circuit corresponding to the plurality of circuit switch states when one of the first circuit switch state or the second circuit switch state is in the closed state and the third circuit switch state is in the closed state;

and the maintenance state submodule is used for judging that the preset circuit corresponding to the plurality of circuit switch states is in the maintenance state when the first circuit switch state, the second circuit switch state and the third circuit switch state are all in the separated state, and no fault wave recording signal is required to be sent.

Optionally, the system further comprises:

the fixed value sheet module is used for making and executing a fixed value sheet for the running state of the power grid through a relay protection personnel and extracting the fixed value sheet of the line protection device;

the comparison sub-module is used for comparing whether the fixed value of the fixed value list is consistent with the fixed value of the fixed value list;

and the sub-module is used for taking the fixed value of the fixed value list as a preset protection reference value if the fixed value list is the preset protection reference value.

Optionally, the judging module 703 includes:

The preset protection reference value submodule is used for acquiring a site fixed value list and a preset protection reference value of the line protection device corresponding to the fault wave recording information;

the second judging sub-module is used for judging whether the fixed value on the field fixed value list is consistent with a preset protection reference value or not;

and the judging and matching sub-module is used for judging whether the fixed value on the site fixed value list is consistent with the preset protection reference value if yes.

Optionally, the comparison module 704 includes:

the recording file sub-module is used for comparing whether the recording file of the fault recording information is consistent with the recording file of the fault recording information received by the intelligent recorder or not when the judging result is that the fixed value on the field fixed value list is consistent with the preset protection reference value;

and the recording file consistency sub-module is used for judging that the recording file of the fault recording information is consistent with the recording file of the fault recording information received by the intelligent recorder if the fault recording information is the same as the fault recording information.

Optionally, the fault presentation module 705 includes:

the third judging sub-module is used for judging whether fault current exists in the fault wave recording information or whether the fault power direction is positive or not when the comparison result is consistent;

the incorrect action submodule is used for judging that the protection action of the protection device corresponding to the fault analysis is incorrect if the fault current does not exist or the fault power direction is the opposite direction;

The fourth judging sub-module is used for judging whether the homologous comparison in the fault wave recording information is normal or not;

the homologous comparison abnormal result submodule is used for generating a homologous comparison abnormal result if the homologous comparison is abnormal;

the fault recording sub-module is used for carrying out homologous comparison on the recording files of the main protection device and the auxiliary protection device which are at the same interval in the fault recording information, generating a fault briefing according to the homologous comparison result and sending the fault briefing to a dispatching attendant.

Optionally, the fault-recording sub-module includes:

the same interval sub-module is used for acquiring the record files of the main protection device and the main two protection devices which are at the same interval in the fault record information;

the current difference value submodule is used for calculating a current difference value between a fault current value in the wave recording file of the main protection device and the second protection device;

the time difference sub-module is used for calculating the time difference between the fault time value in the wave recording file of the main protection device and the second protection device;

the ranging difference value submodule is used for calculating a ranging difference value between a fault ranging value in the wave recording file of the main protection device and the secondary protection device;

A fifth judging sub-module, configured to judge whether the current difference is smaller than a preset current threshold, whether the time difference is smaller than a preset time error threshold, and whether the ranging difference is smaller than a preset ranging error threshold;

the fault briefing sub-module is used for judging that the homology comparison is successful if the current difference value is smaller than a preset current threshold value, the time difference value is smaller than a preset time error threshold value and the ranging difference value is smaller than a preset ranging error threshold value, and generating a fault briefing and sending the fault briefing to a dispatching attendant when the fixed value on the site fixed value list corresponding to the main protection device and the main protection device respectively is consistent with a preset protection reference value.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, which are not repeated herein.

In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods may be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied essentially or in part or all of the technical solution or in part in the form of a software product stored in a storage medium, including instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. The automatic fault briefing sending method is characterized by being applied to a relay protection intelligent operation and maintenance master station; the relay protection intelligent operation and maintenance master station is respectively connected with the line protection device and the intelligent recorder; the method comprises the following steps:

responding to a fault query request, and acquiring primary equipment state information of a transformer substation site corresponding to the fault query request;

determining fault wave recording information required to be uploaded by a preset line based on the states of a plurality of line disconnecting link in the state information of the primary equipment of the transformer substation site, and sending the fault wave recording information to the intelligent wave recorder;

judging whether a fixed value on a site fixed value list of the line protection device corresponding to the fault wave recording information is consistent with a preset protection reference value or not, and generating a judging result;

Based on the judging result, comparing whether the fault wave recording information is consistent with the fault wave recording information received by the intelligent wave recorder or not, and generating a comparison result;

and when the comparison result is consistent, performing fault analysis on the fault wave recording information, generating a fault briefing, and sending the fault briefing to a dispatching attendant.

2. The method for automatically sending fault briefing according to claim 1, further involving an OCS system, wherein the OCS system is connected with the relay intelligent operation and maintenance master station; the method further comprises the steps of:

acquiring line running state information of a plurality of preset lines through the line protection device;

and acquiring the state information of the primary equipment of the substation site through the OCS system.

3. The method for automatically sending fault briefing according to claim 2, wherein the step of determining fault record information to be sent to a preset line based on a plurality of line knife switch states in the state information of the primary device in the transformer station field, and sending the fault record information to the intelligent recorder includes:

acquiring a substation field primary device state corresponding to the substation field primary device state information and a line operation state corresponding to the line operation state information of each preset line;

Determining a plurality of line disconnecting link states corresponding to each preset line based on the primary device state of the transformer substation site and the line operation state corresponding to each preset line;

judging whether a preset circuit corresponding to the circuit disconnecting link states needs to send a fault wave recording signal or not based on the circuit disconnecting link states;

if yes, acquiring fault information corresponding to the fault wave recording signal, generating fault wave recording information, and sending the fault wave recording information to the intelligent wave recorder;

if not, determining that the preset lines corresponding to the line disconnecting link states are in the maintenance state, and hanging maintenance cards on the preset lines.

4. The automatic fault notification method of claim 3, wherein the plurality of line knife states includes a first line knife state, a second line knife state, and a third line knife state; the step of judging whether the preset circuit corresponding to the circuit switch states needs to send fault recording signals or not based on the circuit switch states comprises the following steps:

when one of the first line disconnecting link state or the second line disconnecting link state is in a closed state and the third line disconnecting link state is in the closed state, judging that a fault recording signal is required to be sent to a preset line corresponding to a plurality of line disconnecting link states;

When the first line disconnecting link state, the second line disconnecting link state and the third line disconnecting link state are all in a separated state, the preset lines corresponding to the line disconnecting link states are judged to be in an overhauling state, and a fault wave recording signal is not required to be sent.

5. The automatic fault notification method of claim 4, further comprising:

setting and executing a fixed value list for the running state of the power grid by a relay protection personnel, and extracting the fixed value list of the line protection device;

comparing whether the fixed value of the execution fixed value list is consistent with the fixed value of the fixed value list;

if yes, taking the fixed value of the fixed value list as a preset protection reference value.

6. The method for automatically sending fault briefing according to claim 1, wherein the step of determining whether a fixed value on a field fixed value list of the line protection device corresponding to the fault record information is consistent with a preset protection reference value, and generating a determination result includes:

acquiring a site fixed value list and a preset protection reference value of a line protection device corresponding to the fault wave recording information;

judging whether the fixed value on the field fixed value list is consistent with the preset protection reference value or not;

If yes, judging that the fixed value on the field fixed value list is consistent with the preset protection reference value.

7. The method for automatically sending fault briefing according to claim 6, wherein the step of comparing whether the fault record information is consistent with the fault record information received by the intelligent recorder based on the judging result, and generating a comparison result includes:

when the judging result is that the fixed value on the field fixed value list is consistent with the preset protection reference value, comparing whether the wave recording file of the fault wave recording information is consistent with the wave recording file of the fault wave recording information received by the intelligent wave recorder or not;

if yes, judging that the wave recording file of the fault wave recording information is consistent with the wave recording file of the fault wave recording information received by the intelligent wave recorder.

8. The method for automatically sending a fault briefing according to claim 1, wherein when the comparison result is consistent, performing fault analysis on the fault recording information, generating a fault briefing, and sending the fault briefing to a scheduling attendant, the method comprises the steps of:

when the comparison result is consistent, judging whether fault current exists in the fault wave recording information or whether the fault power direction is positive;

If the fault current does not exist or the fault power direction is the opposite direction, judging that the protection action of the protection device corresponding to the fault analysis is incorrect;

judging whether the homologous comparison in the fault wave recording information is normal or not;

if the homology comparison is abnormal, generating a homology comparison abnormal result;

and carrying out homologous comparison on the record files of the main protection device and the main protection device which are arranged at the same interval in the fault record information, generating a fault briefing according to the homologous comparison result, and sending the fault briefing to a scheduling attendant.

9. The method for automatically sending fault briefing according to claim 8, wherein the step of performing homology comparison on the recording files of the main protection device and the main protection device at the same interval in the fault recording information, generating the fault briefing according to the homology comparison result, and sending the fault briefing to a dispatch attendant includes:

acquiring the recording files of a main protection device and a main protection device which are arranged at the same interval in the fault recording information;

calculating a current difference value between a fault current value in the wave recording file of the main protection device and the main protection device;

Calculating a time difference value between a fault time value in the wave recording file of the main protection device and the main protection device;

calculating a ranging difference value between a fault ranging value in the wave recording file of the main protection device and the main protection device;

judging whether the current difference value is smaller than a preset current threshold value, whether the time difference value is smaller than a preset time error threshold value and whether the ranging difference value is smaller than a preset ranging error threshold value;

if the current difference value is smaller than the preset current threshold value, the time difference value is smaller than the preset time error threshold value and the ranging difference value is smaller than the preset ranging error threshold value, judging that the homology comparison is successful, and when the fixed value on the site fixed value list corresponding to the main protection device and the main protection device respectively is consistent with the preset protection reference value, generating a fault briefing and sending the fault briefing to a dispatching attendant.

10. The automatic fault sending and reporting system is characterized by being applied to a relay protection intelligent operation and maintenance master station; the relay protection intelligent operation and maintenance master station is respectively connected with the line protection device and the intelligent recorder; the system comprises:

The acquisition module is used for responding to the fault query request and acquiring the state information of the primary equipment of the transformer substation field corresponding to the fault query request;

the fault wave recording module is used for determining fault wave recording information required to be uploaded by a preset line based on the states of a plurality of line disconnecting link in the state information of the primary equipment of the transformer substation site and sending the fault wave recording information to the intelligent wave recorder;

the judging module is used for judging whether the fixed value on the field fixed value list of the line protection device corresponding to the fault wave recording information is consistent with a preset protection reference value or not, and generating a judging result;

the comparison module is used for comparing whether the fault record information is consistent with the fault record information received by the intelligent recorder or not based on the judging result, and generating a comparison result;

and the fault briefing module is used for carrying out fault analysis on the fault wave recording information when the comparison result is consistent, generating a fault briefing and sending the fault briefing to a dispatching attendant.