CN117294005A - Protection operation mode defense early warning system and method for transformer substation line and transformer - Google Patents
Protection operation mode defense early warning system and method for transformer substation line and transformer Download PDFInfo
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- CN117294005A CN117294005A CN202311180308.4A CN202311180308A CN117294005A CN 117294005 A CN117294005 A CN 117294005A CN 202311180308 A CN202311180308 A CN 202311180308A CN 117294005 A CN117294005 A CN 117294005A
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- 230000007123 defense Effects 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 22
- 241000272814 Anser sp. Species 0.000 claims description 69
- 238000012544 monitoring process Methods 0.000 claims description 63
- 238000012545 processing Methods 0.000 claims description 33
- 238000007781 pre-processing Methods 0.000 claims description 6
- 238000011160 research Methods 0.000 claims description 6
- 230000004044 response Effects 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 3
- 238000003745 diagnosis Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 230000010354 integration Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 5
- 230000007547 defect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
- H02J13/00036—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers
- H02J13/0004—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers involved in a protection system
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/16—Electric power substations
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Human Computer Interaction (AREA)
- Protection Of Transformers (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a protection operation mode defense early warning system of a transformer substation and a transformer and a method thereof, belonging to the technical field of relay protection management.
Description
Technical Field
The invention belongs to the technical field of relay protection management, and particularly relates to a protection operation mode defense early warning system and a protection operation mode defense early warning method for a transformer substation line and a transformer.
Background
In a regional power grid, along with the continuous increase of the requirements for power supply reliability, a primary temporary power supply mode for reducing the risk of the power grid in an overhaul state increases the execution complexity of a secondary mode and simultaneously provides higher requirements for the checking accuracy of the secondary mode. The intelligent station control cabinet intelligent component outlet pressing plate management is improper to cause accident expansion, and outlet pressing plate operation is not standard, and large-area power failure caused by the difference of the bus-bar differential protection function is overlapped, so that warning is brought to the secondary mode management to a greater extent. The primary mode of the power grid is visible to the naked eye, and the demand of the secondary mode which is visible and measurable is gradually highlighted. At present, the monitoring and early warning of the protection operation of a transformer substation circuit and a transformer in the defense early warning of a power grid are weak, and targeted defense early warning measures are lacking.
In order to promote monitoring and early warning of transformer substation line and transformer protection operation in a power grid, a system and a method for defending and early warning of the transformer substation line and transformer protection operation mode are designed to solve the problems.
Disclosure of Invention
The invention aims to solve the defect that monitoring and early warning of a transformer station circuit and transformer protection operation are lack in the operation of a power grid in the prior art, and provides a system and a method for defending and early warning of the transformer station circuit and transformer protection operation mode.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the utility model provides a protection operation mode defense early warning system of transformer substation circuit and transformer, the installation of defense early warning system is operated in relay protection integration intelligent management and control platform for protect the judgement to transformer substation circuit and transformer protection operation mode, defense early warning system includes:
the judging unit is used for judging and identifying the station type which comprises a conventional station and an intelligent station;
the data processing unit is used for receiving monitoring data of the on-line monitoring terminal on the transformer station circuit and the transformer, and preprocessing the received monitoring data to form a judging signal;
the logic analysis unit receives the judging signal from the data unit, and carries out logic analysis on the protection operation mode of the transformer station circuit and the transformer according to the judging signal to form a protection research and judgment result;
the result output unit is used for displaying the result of the protection research and judgment output by the logic analysis unit through the relay protection integrated intelligent management and control platform;
the method comprises the steps of carrying out on-line monitoring on the running state of relay protection equipment of a transformer substation circuit and a transformer through an on-line monitoring terminal, transmitting monitoring data of the on-line monitoring terminal to a data processing unit through a data interface, receiving the monitoring data by the data processing unit, processing the monitoring data through a data preprocessing module arranged in the data processing unit to form a judging signal, analyzing the judging signal by a diagnosis module of a logic judging unit to form a result of protection and judgment, and finally displaying the result through a result output unit.
Further, the data processing unit comprises a data interface, a data distinguishing module and a data processing module, wherein the data interface establishes a transmission channel of monitoring data with the on-line monitoring terminal through a data bus, the data distinguishing module distinguishes and classifies the monitoring data collected by the on-line monitoring terminal from a conventional station and an intelligent station, classifies the data according to line protection and transformer protection types corresponding to the monitored data, and the data processing module processes the classified data of the data integrating module to form a judging signal with logic characters.
Further, the logic judging unit comprises a judging module, a logic analyzing module and a result judging module, wherein the judging module judges the state of the element according to the judging signal output by the data processing unit, the logic analyzing module analyzes the logic states of the control word and the pressing plate of the element, and the operation mode of the element is judged by the result judging module according to the analysis result of the logic analyzing module.
Further, the elements comprise a differential element, a distance element, a zero sequence element, a reclosing element and a backup element, and the pressing plates comprise a soft pressing plate, a functional hard pressing plate, an outlet hard pressing plate, a GOOSE outlet pressing plate and a tripping and closing pressing plate.
A defending and early warning method for a defending and early warning system of a transformer substation line and transformer protection operation mode comprises the following steps:
s101, starting a defense early warning system, and monitoring the state change of relay protection equipment of a transformer substation circuit and a transformer through an online monitoring terminal to obtain monitoring data;
s102, locking relay protection equipment, judging whether the type of the station belongs to a conventional station or an intelligent station by judging the attributes of a line and a transformer through a judging unit;
s103, if the type of the station to which the station belongs is judged to be a conventional station, judging and classifying the monitoring data acquired by the on-line monitoring terminal through a data judging module of the data processing unit, and dividing line protection or transformer protection;
s1031, for line protection, when the line voltage level is 110KV and above, starting a logic judgment unit, judging logic for the line protection operation mode of the conventional station, and outputting the line protection judgment result of the conventional station;
s1032, for transformer protection, starting a logic judging unit, judging logic for a normal station voltage device protection operation mode, and outputting a normal station transformer protection judging result;
s104, if the type of the station is judged to be an intelligent station, judging and classifying the monitoring data acquired by the on-line monitoring terminal through a data judging module of the data processing unit, and dividing line protection or transformer protection;
s1041, when the intelligent station equipment type judges that the intelligent station equipment is line protection, starting a logic judging unit for line protection when the line voltage level is 110KV and above, judging the operation mode of the intelligent station line protection, and outputting the judging result of the intelligent station line protection
S1042, when the intelligent station equipment type judgment is transformer protection, starting a logic judgment unit and an intelligent station voltage device protection operation mode judgment logic for transformer protection, and outputting an intelligent station transformer protection judgment result;
s105, the result output unit receives the judging result of the line protection and the transformer protection of the conventional station or the intelligent station, and the result is displayed on the relay protection integrated intelligent management and control platform to finish the defense early warning operation flow.
Further, in step S1031, the logic judgment unit performs logic judgment on the normal station line protection operation mode judgment logic, which is a control word, a soft pressing plate, a functional hard pressing plate and an exit hard pressing plate of the differential element, the distance element, the zero sequence element and the reclosing element in the normal station line, and outputs a judgment result of normal station line protection, where the logic judgment and judgment result includes the following contents:
differential element: the control word, the soft pressing plate, the functional hard pressing plate and the outlet hard pressing plate are all 1, and the judgment result is tripping; the control word, the soft pressing plate and the functional hard pressing plate are all 1, the outlet hard pressing plate is 0, and the judgment result is weak current response; the control word and the soft pressing plate are 1, the functional hard pressing plate is 0, the outlet hard pressing plate is not judged, and the judgment result is a signal; the control word and the soft pressing plate are arbitrarily 0, the functional hard pressing plate and the outlet hard pressing plate are not judged, and the judging result is not started; the control word and the soft pressing plate are not judged, and the functional hard pressing plate and the outlet hard pressing plate are not judged, so that the judging result is that the differential function is not generated;
distance element: the control word is 1, the soft pressing plate is 1, the functional hard pressing plate is 1, the outlet hard pressing plate is 1, and the judging result is started; the control word is 1, any one of the soft pressing plate, the functional hard pressing plate and the outlet hard pressing plate is 0, and the judgment result is that the device is not used; the control word and the soft pressing plate are arbitrarily 0, the functional hard pressing plate and the outlet hard pressing plate are not judged, and the judging result is not started;
zero sequence element: the control word, the soft pressing plate, the functional hard pressing plate and the outlet hard pressing plate are all 1, and the judging result is starting; the control word is 1, and any one of the soft pressing plate, the functional hard pressing plate or the outlet hard pressing plate is 0, and the judging result is that the device is disabled; any one of the control word and the soft pressing plate is 0, and the functional hard pressing plate and the outlet hard pressing plate are not judged, and the judgment result is not started;
reclosing element: the control word, the soft pressing plate, the functional hard pressing plate and the outlet hard pressing plate are all 1, and the judging result is starting; the control word and the soft pressing plate are 1, the functional hard pressing plate or the outlet hard pressing plate is arbitrarily 0, and the judgment result is that the device is not used; the control word or the soft pressing plate is arbitrarily 0, and the functional hard pressing plate and the outlet hard pressing plate are not judged, and the judgment result is not throw.
Further, in step S1032, the logic judgment unit judges the operation mode of the transformer protection of the conventional station, which is to perform logic judgment on the control word, the soft pressing plate, the functional hard pressing plate and the outlet hard pressing plate of the differential element and the backup element in the transformer protection of the conventional station, and the logic judgment and judgment result includes the following contents:
differential element: the control word, the soft pressing plate, the functional hard pressing plate and the outlet hard pressing plate are all 1, and the judgment result is tripping; the control word or the soft pressing plate is arbitrarily 0, and the functional hard pressing plate and the outlet hard pressing plate are not judged, and the judgment result is a signal;
backup element: the control word, the soft pressing plate, the functional hard pressing plate and the outlet hard pressing plate are all 1, and the judging result is starting; the control word and the soft pressing plate are not judged, and if one of the functional hard pressing plate and the outlet hard pressing plate is 0, the judging result is that the device is disabled; the control word is not judged, the soft pressing plate is 0, the functional hard pressing plate and the outlet hard pressing plate are not judged, and the judging result is not started.
Further, in the step S1041, when the type of the intelligent station device is judged to be line protection, the logic judgment unit judges the operation mode of the intelligent station line protection, and is configured to logically judge the control words, the soft pressing plate, the GOOSE outlet pressing plate and the tripping and closing pressing plate of the differential element, the distance element, the zero sequence element and the reclosing element in the intelligent station line protection, and output the judgment result of the intelligent station line protection, where the logic judgment and the judgment result include the following contents:
differential element: the control word is 1, the soft pressing plate is 1, the GOOSE outlet pressing plate is 1, the tripping and closing pressing plate is 1, and the judgment result is tripping; the control word is 1, the soft pressing plate is 1, the GOOSE outlet pressing plate is 0, the tripping and closing pressing plate is 1, and the judgment result is weak current response; the control word is 1, the soft pressing plate is 0, the GOOSE outlet pressing plate is not judged, the tripping and closing pressing plate is 1, and the judgment result is a signal; the control word is 1, the soft pressing plate, the GOOSE outlet pressing plate and the tripping and closing pressing plate are not judged, and the judging result is not started; the control word is not, the soft pressing plate is not, the GOOSE outlet pressing plate and the tripping and closing pressing plate are not judged, and the judging result is that the differential function is not generated;
distance element: the control word is 1, the soft pressing plate is 1, the GOOSE outlet pressing plate is 1, the tripping and closing pressing plate is 1, and the judging result is starting; the control word is 1, any one of the soft pressing plate and the GOOSE outlet pressing plate is 0, the tripping and closing pressing plate is not judged, and the judging result is that the device is disabled; the control word is 0, the soft pressing plate, the GOOSE outlet pressing plate and the tripping and closing pressing plate are not judged, and the judging result is not started;
zero sequence element: the control word is 1, the soft pressing plate is 1, the GOOSE outlet pressing plate is 1, the tripping and closing pressing plate is 1, and the judging result is starting; the control word is 1, the soft pressing plate and the GOOSE outlet pressing plate are arbitrarily 0, the tripping and closing pressing plate is not judged, and the judging result is that the device is disabled; the control word is 0, the soft pressing plate, the GOOSE outlet pressing plate and the tripping and closing pressing plate are not judged, and the judging result is not started;
reclosing element: the control word is 1, the soft pressing plate is 1, the GOOSE outlet pressing plate is 1, the tripping and closing pressing plate is 1, and the judging result is starting; the control word is 1, any one of the soft pressing plate and the GOOSE outlet pressing plate is 0, the tripping and closing pressing plate is not judged, and the judging result is that the device is disabled; and if any one of the control word and the soft pressing plate is 0 and the GOOSE outlet pressing plate and the tripping and closing pressing plate are not judged, the judgment result is not throw.
Further, in the step S1042, when the type of the intelligent station device is judged to be transformer protection, a logic judgment unit pair is started, and logic judgment and result output are performed on control words, soft pressing plates, GOOSE outlet pressing plates and tripping and closing pressing plates of a differential element and a backup element in transformer protection by an intelligent station voltage protection operation mode judgment logic as follows:
differential element: the control word is 1, the soft pressing plate is 1, the GOOSE outlet pressing plate is 1, the tripping and closing pressing plate is 1, and the judgment result is tripping; the control word is not judged, any one of the soft pressing plate and the GOOSE outlet pressing plate is 0, the tripping and closing pressing plate is not judged, and the judgment result is a signal;
backup element: the control word is 1, the soft pressing plate is 1, the GOOSE outlet pressing plate is 1, the tripping and closing pressing plate is 1, and the judging result is starting; the control word is not judged, one and only one of the soft pressing plate and the GOOSE outlet pressing plate are 0, the tripping and closing pressing plate is not judged, and the judging result is that the device is disabled; the control word is not judged, the soft pressing plate is 0, the GOOSE outlet pressing plate is 0, the tripping and closing pressing plate is not judged, and the judging result is not started.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, an effective monitoring defense early warning method is provided for the protection operation of the transformer substation circuit and the transformer by using the provided defense early warning system, the conventional station or the intelligent station is identified and distinguished, the judgment results of circuit protection and transformer protection are output by using logic judgment according to the data such as control words and pressing plates in relay protection equipment, the effective defense early warning is performed for the protection operation of the circuit and the transformer, management and result display are performed through a relay protection integrated intelligent management and control platform, the technical defect that the prior art lacks of early warning for the protection operation of the transformer substation and the transformer is overcome, and the management efficiency of a secondary mode is improved.
Drawings
Fig. 1 is a schematic diagram of a protection operation mode defense and early warning system of a transformer substation circuit and a transformer;
FIG. 2 is a flow chart of a method for defending and early warning a transformer station circuit and a transformer protection operation mode, which is provided by the invention;
FIG. 3 is a schematic diagram of a conventional station line protection operation mode judgment logic in an embodiment of the present invention;
FIG. 4 is a schematic diagram of a conventional station transformer protection operation mode judgment logic in an embodiment of the present invention;
FIG. 5 is a schematic diagram of judging the circuit protection operation mode of the intelligent station according to the embodiment of the invention;
fig. 6 is a schematic diagram of a judgment logic of a transformer protection operation mode of an intelligent station according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
As shown in FIG. 1, the protection and early warning system for the protection operation mode of the transformer substation is installed and operated on the relay protection integrated intelligent control platform and is used for carrying out protection and judgment on the protection operation mode of the transformer substation, and comprises a judgment unit, a data processing unit, a logic analysis unit and a result output unit. Wherein,
the judging unit is used for judging and identifying the station type which comprises a conventional station and an intelligent station; the data processing unit is used for receiving monitoring data of the on-line monitoring terminal on the transformer station circuit and the transformer, and preprocessing the received monitoring data to form a judging signal; the logic analysis unit receives the judging signal from the data unit, and carries out logic analysis on the protection operation mode of the transformer station circuit and the transformer according to the judging signal to form a protection research and judgment result; the result output unit is used for displaying the result of the protection research and judgment output by the logic analysis unit through the relay protection integrated intelligent management and control platform;
when the system is executed, the operation states of relay protection equipment of a transformer substation circuit and a transformer are monitored on line through an on-line monitoring terminal, monitoring data of the on-line monitoring terminal are transmitted to a data processing unit through a data interface, the data processing unit receives the monitoring data, the monitoring data are processed through a data preprocessing module arranged in the data processing unit to form judging signals, a diagnosis module of a logic judging unit analyzes the judging signals to form a result of protection and judgment, and finally the result is displayed through a result output unit.
The data processing unit comprises a data interface, a data judging module and a data processing module, wherein the data interface establishes a transmission channel of monitoring data with the on-line monitoring terminal through a data bus, the data judging module judges and classifies the monitoring data collected by the on-line monitoring terminal from a conventional station and an intelligent station, classifies the data according to line protection and transformer protection types corresponding to the monitored data, and the data processing module processes the classified data of the data integrating module to form a judging signal with logic characters. The logic judging unit comprises a judging module, a logic analyzing module and a result judging module, wherein the judging module judges the state of the element according to the judging signal output by the data processing unit, the logic analyzing module analyzes the logic states of the control word and the pressing plate of the element, and the operation mode of the element is judged by the result judging module according to the analysis result of the logic analyzing module. The elements comprise a differential element, a distance element, a zero sequence element, a reclosing element and a backup element, wherein the pressing plates comprise a soft pressing plate, a functional hard pressing plate, an outlet hard pressing plate, a GOOSE outlet pressing plate and a tripping and closing pressing plate.
According to the protection operation mode defense and early warning system for the transformer substation line and the transformer, as shown in fig. 2, the embodiment provides a protection and early warning method for the protection operation mode of the transformer substation line and the transformer, and the protection and early warning method comprises the following specific contents:
s101, starting a defense early warning system, and monitoring the state change of relay protection equipment of a transformer substation circuit and a transformer through an online monitoring terminal to obtain monitoring data (a fixed value or a pressing plate);
s102, locking relay protection equipment, judging the attribute of typical equipment (circuits and transformers) through a judging unit, and judging whether the type of the station belongs to a conventional station or an intelligent station;
s103, if the type of the station is judged to be a conventional station, collecting related data (control words, soft pressing plates, functions, hard pressing plates at the outlet and the like) of conventional station equipment, judging and classifying the monitoring data collected by the on-line monitoring terminal through a data judging module of the data processing unit, and dividing line protection or transformer protection;
s1031, for line protection, when the line voltage level is 110KV and above (the line voltage level is not considered below 110KV in the embodiment), starting a logic judging unit, judging logic for the line protection operation mode of the conventional station, and outputting a conventional station line protection judging result;
as shown in fig. 3, the logic judgment unit performs logic judgment on the operation mode judgment logic of the protection of the conventional station line, namely, the control words, the soft pressing plate, the functional hard pressing plate and the outlet hard pressing plate of the differential element, the distance element, the zero sequence element and the reclosing element in the conventional station line, and outputs the judgment result of the protection of the conventional station line, wherein the logic judgment and judgment result comprises the following contents:
differential element: the control word, the soft pressing plate, the functional hard pressing plate and the outlet hard pressing plate are all 1, and the judgment result is tripping; the control word, the soft pressing plate and the functional hard pressing plate are all 1, the outlet hard pressing plate is 0, and the judgment result is weak current response; the control word and the soft pressing plate are 1, the functional hard pressing plate is 0, the outlet hard pressing plate is not judged, and the judgment result is a signal; the control word and the soft pressing plate are arbitrarily 0, the functional hard pressing plate and the outlet hard pressing plate are not judged, and the judging result is not started; the control word and the soft pressing plate are not judged, and the functional hard pressing plate and the outlet hard pressing plate are not judged, so that the judging result is that the differential function is not generated;
distance element: the control word is 1, the soft pressing plate is 1, the functional hard pressing plate is 1, the outlet hard pressing plate is 1, and the judging result is started; the control word is 2, any one of the soft pressing plate, the functional hard pressing plate and the outlet hard pressing plate is 0, and the judgment result is that the device is not used; the control word and the soft pressing plate are arbitrarily 0, the functional hard pressing plate and the outlet hard pressing plate are not judged, and the judging result is not started;
zero sequence element: the control word, the soft pressing plate, the functional hard pressing plate and the outlet hard pressing plate are all 1, and the judging result is starting; the control word is 1, and any one of the soft pressing plate, the functional hard pressing plate or the outlet hard pressing plate is 0, and the judging result is that the device is disabled; any one of the control word and the soft pressing plate is 0, and the functional hard pressing plate and the outlet hard pressing plate are not judged, and the judgment result is not started;
reclosing element: the control word, the soft pressing plate, the functional hard pressing plate and the outlet hard pressing plate are all 1, and the judging result is starting; the control word and the soft pressing plate are 1, the functional hard pressing plate or the outlet hard pressing plate is arbitrarily 0, and the judgment result is that the device is not used; the control word or the soft pressing plate is arbitrarily 0, and the functional hard pressing plate and the outlet hard pressing plate are not judged, and the judgment result is not throw.
S1032, as shown in FIG. 4, for transformer protection, starting a logic judgment unit, judging logic for the normal station voltage apparatus protection operation mode, and outputting the normal station transformer protection judgment result;
the logic judgment unit judges the operation mode of the transformer protection of the conventional station, namely, judges the control words, the soft pressing plate, the functional hard pressing plate and the outlet hard pressing plate of the differential element and the backup element in the transformer protection of the conventional station, and the logic judgment and judgment result comprises the following contents:
differential element: the control word, the soft pressing plate, the functional hard pressing plate and the outlet hard pressing plate are all 1, and the judgment result is tripping; the control word or the soft pressing plate is arbitrarily 0, and the functional hard pressing plate and the outlet hard pressing plate are not judged, and the judgment result is a signal;
backup element: the control word, the soft pressing plate, the functional hard pressing plate and the outlet hard pressing plate are all 1, and the judging result is starting; the control word and the soft pressing plate are not judged, and if one of the functional hard pressing plate and the outlet hard pressing plate is 0, the judging result is that the device is disabled; the control word is not judged, the soft pressing plate is 0, the functional hard pressing plate and the outlet hard pressing plate are not judged, and the judging result is not started.
S104, if the type of the station is judged to be an intelligent station, and relevant data (control words, soft pressing plates, GOOSE outlet soft pressing plates, intelligent terminal tripping and closing pressing plates and the like) of the intelligent station equipment are collected, the monitoring data collected by the online monitoring terminal are judged and classified through a data judging module of the data processing unit, and whether line protection or transformer protection is divided; the relevant data of the intelligent station equipment is collected, wherein the relevant data comprise a control word, a soft pressing plate, a GOOSE outlet pressing plate (the GOOSE outlet soft pressing plate in fig. 2) and a tripping and closing pressing plate (the intelligent terminal tripping/closing pressing plate in fig. 2), and whether the intelligent station equipment is in line protection or transformer protection is judged according to the type of the intelligent station equipment;
s1041, as shown in FIG. 5, when the intelligent station equipment type judges that the intelligent station equipment type is line protection, starting a logic judging unit when the line voltage level is 110KV and above (the line voltage level is not considered below 110KV in the embodiment), judging logic of the intelligent station line protection operation mode, and outputting an intelligent station line protection judging result;
the logic judgment unit judges the operation mode of the intelligent station line protection, namely, the logic judgment is carried out on control words, soft pressing plates, GOOSE outlet pressing plates and tripping and closing pressing plates of differential elements, distance elements, zero sequence elements and reclosing elements in the intelligent station line protection, and the judgment result of the intelligent station line protection is output, wherein the logic judgment and judgment result comprises the following contents:
differential element: the control word is 1, the soft pressing plate is 1, the GOOSE outlet pressing plate is 1, the tripping and closing pressing plate is 1, and the judgment result is tripping; the control word is 1, the soft pressing plate is 1, the GOOSE outlet pressing plate is 0, the tripping and closing pressing plate is 1, and the judgment result is weak current response; the control word is 1, the soft pressing plate is 0, the GOOSE outlet pressing plate is not judged, the tripping and closing pressing plate is 1, and the judgment result is a signal; the control word is 1, the soft pressing plate, the GOOSE outlet pressing plate and the tripping and closing pressing plate are not judged, and the judging result is not started; the control word is not, the soft pressing plate is not, the GOOSE outlet pressing plate and the tripping and closing pressing plate are not judged, and the judging result is that the differential function is not generated;
distance element: the control word is 1, the soft pressing plate is 1, the GOOSE outlet pressing plate is 1, the tripping and closing pressing plate is 1, and the judging result is starting; the control word is 1, any one of the soft pressing plate and the GOOSE outlet pressing plate is 0, the tripping and closing pressing plate is not judged, and the judging result is that the device is disabled; the control word is 0, the soft pressing plate, the GOOSE outlet pressing plate and the tripping and closing pressing plate are not judged, and the judging result is not started;
zero sequence element: the control word is 1, the soft pressing plate is 1, the GOOSE outlet pressing plate is 1, the tripping and closing pressing plate is 1, and the judging result is starting; the control word is 1, the soft pressing plate and the GOOSE outlet pressing plate are arbitrarily 0, the tripping and closing pressing plate is not judged, and the judging result is that the device is disabled; the control word is 0, the soft pressing plate, the GOOSE outlet pressing plate and the tripping and closing pressing plate are not judged, and the judging result is not started;
reclosing element: the control word is 1, the soft pressing plate is 1, the GOOSE outlet pressing plate is 1, the tripping and closing pressing plate is 1, and the judging result is starting; the control word is 1, any one of the soft pressing plate and the GOOSE outlet pressing plate is 0, the tripping and closing pressing plate is not judged, and the judging result is that the device is disabled; and if any one of the control word and the soft pressing plate is 0 and the GOOSE outlet pressing plate and the tripping and closing pressing plate are not judged, the judgment result is not throw.
S1042, as shown in FIG. 6, when the intelligent station equipment type judgment is transformer protection, starting a logic judgment unit and an intelligent station voltage device protection operation mode judgment logic for transformer protection, and outputting an intelligent station transformer protection judgment result;
starting a logic judgment unit pair, namely an intelligent station voltage ware protection operation mode judgment logic, and carrying out logic judgment and result output on control words, soft pressing plates, GOOSE outlet pressing plates and tripping and closing pressing plates of a differential element and a backup element in transformer protection as follows:
differential element: the control word is 1, the soft pressing plate is 1, the GOOSE outlet pressing plate is 1, the tripping and closing pressing plate is 1, and the judgment result is tripping; the control word is not judged, any one of the soft pressing plate and the GOOSE outlet pressing plate is 0, the tripping and closing pressing plate is not judged, and the judgment result is a signal;
backup element: the control word is 1, the soft pressing plate is 1, the GOOSE outlet pressing plate is 1, the tripping and closing pressing plate is 1, and the judging result is starting; the control word is not judged, one and only one of the soft pressing plate and the GOOSE outlet pressing plate are 0, the tripping and closing pressing plate is not judged, and the judging result is that the device is disabled; the control word is not judged, the soft pressing plate is 0, the GOOSE outlet pressing plate is 0, the tripping and closing pressing plate is not judged, and the judging result is not started.
S105, the result output unit receives the judging result of the line protection and the transformer protection of the conventional station or the intelligent station, and the result is displayed on the relay protection integrated intelligent management and control platform to finish the defense early warning operation flow.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (9)
1. The utility model provides a protection operation mode defense early warning system of transformer substation circuit and transformer, its characterized in that, the installation of defense early warning system is operated in relay protection integration intelligent management and control platform for protect the judgement to transformer substation circuit and transformer protection operation mode, defense early warning system includes:
the judging unit is used for judging and identifying the station type which comprises a conventional station and an intelligent station;
the data processing unit is used for receiving monitoring data of the on-line monitoring terminal on the transformer station circuit and the transformer, and preprocessing the received monitoring data to form a judging signal;
the logic analysis unit receives the judging signal from the data unit, and carries out logic analysis on the protection operation mode of the transformer station circuit and the transformer according to the judging signal to form a protection research and judgment result;
the result output unit is used for displaying the result of the protection research and judgment output by the logic analysis unit through the relay protection integrated intelligent management and control platform;
the method comprises the steps of carrying out on-line monitoring on the running state of relay protection equipment of a transformer substation circuit and a transformer through an on-line monitoring terminal, transmitting monitoring data of the on-line monitoring terminal to a data processing unit through a data interface, receiving the monitoring data by the data processing unit, processing the monitoring data through a data preprocessing module arranged in the data processing unit to form a judging signal, analyzing the judging signal by a diagnosis module of a logic judging unit to form a result of protection and judgment, and finally displaying the result through a result output unit.
2. The system of claim 1, wherein the data processing unit comprises a data interface, a data discriminating module and a data processing module, the data interface establishes a transmission channel for monitoring data with the on-line monitoring terminal through a data bus, the data discriminating module discriminates and classifies the monitoring data collected by the on-line monitoring terminal from a conventional station and an intelligent station, classifies the data according to line protection and transformer protection types corresponding to the monitored data, and the data processing module processes the classified data of the data integrating module to form a judging signal with logic characters.
3. The protection operation mode defense and early warning system for the transformer substation according to claim 1, wherein the logic judging unit comprises a judging module, a logic analysis module and a result judging module, the judging module judges the state of the element according to the judging signal output by the data processing unit, the logic analysis module analyzes the logic states of the control word and the pressing plate of the element, and the operation mode of the element is judged by the result judging module according to the analysis result of the logic analysis module.
4. The protection operation mode defense warning system for the transformer substation according to claim 3, wherein the elements comprise a differential element, a distance element, a zero sequence element, a reclosing element and a backup element, and the pressing plates comprise a soft pressing plate, a functional hard pressing plate, an outlet hard pressing plate, a GOOSE outlet pressing plate and a tripping and closing pressing plate.
5. The defending and early warning method of the defending and early warning system of the transformer substation line and transformer protection operation mode according to any one of claims 1 to 4, wherein the defending and early warning method comprises the following steps:
s101, starting a defense early warning system, and monitoring the state change of relay protection equipment of a transformer substation circuit and a transformer through an online monitoring terminal to obtain monitoring data;
s102, locking relay protection equipment, judging whether the type of the station belongs to a conventional station or an intelligent station by judging the attributes of a line and a transformer through a judging unit;
s103, if the type of the station to which the station belongs is judged to be a conventional station, judging and classifying the monitoring data acquired by the on-line monitoring terminal through a data judging module of the data processing unit, and dividing line protection or transformer protection;
s1031, for line protection, when the line voltage level is 110KV and above, starting a logic judgment unit, judging logic for the line protection operation mode of the conventional station, and outputting the line protection judgment result of the conventional station;
s1032, for transformer protection, starting a logic judging unit, judging logic for a normal station voltage device protection operation mode, and outputting a normal station transformer protection judging result;
s104, if the type of the station is judged to be an intelligent station, judging and classifying the monitoring data acquired by the on-line monitoring terminal through a data judging module of the data processing unit, and dividing line protection or transformer protection;
s1041, when the intelligent station equipment type judges that the intelligent station equipment is line protection, starting a logic judging unit for line protection when the line voltage level is 110KV and above, judging the operation mode of the intelligent station line protection, and outputting the judging result of the intelligent station line protection
S1042, when the intelligent station equipment type judgment is transformer protection, starting a logic judgment unit and an intelligent station voltage device protection operation mode judgment logic for transformer protection, and outputting an intelligent station transformer protection judgment result;
s105, the result output unit receives the judging result of the line protection and the transformer protection of the conventional station or the intelligent station, and the result is displayed on the relay protection integrated intelligent management and control platform to finish the defense early warning operation flow.
6. The defending and early warning method of the defending and early warning system of the transformer station circuit and the transformer protection operation mode according to claim 5, wherein in the step S1031, the logic judgment unit judges the normal station circuit protection operation mode, which is to logically judge the control words, the soft pressing plate, the functional hard pressing plate and the exit hard pressing plate of the differential element, the distance element, the zero sequence element and the reclosing element in the normal station circuit, and output the judgment result of the normal station circuit protection, and the logic judgment and judgment result comprises the following contents:
differential element: the control word, the soft pressing plate, the functional hard pressing plate and the outlet hard pressing plate are all 1, and the judgment result is tripping; the control word, the soft pressing plate and the functional hard pressing plate are all 1, the outlet hard pressing plate is 0, and the judgment result is weak current response; the control word and the soft pressing plate are 1, the functional hard pressing plate is 0, the outlet hard pressing plate is not judged, and the judgment result is a signal; the control word and the soft pressing plate are arbitrarily 0, the functional hard pressing plate and the outlet hard pressing plate are not judged, and the judging result is not started; the control word and the soft pressing plate are not judged, and the functional hard pressing plate and the outlet hard pressing plate are not judged, so that the judging result is that the differential function is not generated;
distance element: the control word, the soft pressing plate, the functional hard pressing plate and the outlet hard pressing plate are all 1, and the judging result is starting; the control word is 1, any one of the soft pressing plate, the functional hard pressing plate and the outlet hard pressing plate is 0, and the judgment result is that the device is not used; the control word and the soft pressing plate are arbitrarily 0, the functional hard pressing plate and the outlet hard pressing plate are not judged, and the judging result is not started;
zero sequence element: the control word, the soft pressing plate, the functional hard pressing plate and the outlet hard pressing plate are all 1, and the judging result is starting; the control word is 1, and any one of the soft pressing plate, the functional hard pressing plate or the outlet hard pressing plate is 0, and the judging result is that the device is disabled; any one of the control word and the soft pressing plate is 0, and the functional hard pressing plate and the outlet hard pressing plate are not judged, and the judgment result is not started;
reclosing element: the control word, the soft pressing plate, the functional hard pressing plate and the outlet hard pressing plate are all 1, and the judging result is starting; the control word and the soft pressing plate are 1, the functional hard pressing plate or the outlet hard pressing plate is arbitrarily 0, and the judgment result is that the device is not used; the control word or the soft pressing plate is arbitrarily 0, and the functional hard pressing plate and the outlet hard pressing plate are not judged, and the judgment result is not throw.
7. The defending and early warning method of the defending and early warning system of the transformer station circuit and transformer protection operation mode according to claim 5, wherein in the step S1032, the logic judgment unit judges the normal station transformer protection operation mode, and performs logic judgment on control words, soft pressing plates, functional hard pressing plates and export hard pressing plates of differential elements and backup elements in the normal station transformer protection, and the logic judgment and judgment result includes the following contents:
differential element: the control word, the soft pressing plate, the functional hard pressing plate and the outlet hard pressing plate are all 1, and the judgment result is tripping; the control word or the soft pressing plate is arbitrarily 0, and the functional hard pressing plate and the outlet hard pressing plate are not judged, and the judgment result is a signal;
backup element: the control word, the soft pressing plate, the functional hard pressing plate and the outlet hard pressing plate are all 1, and the judging result is starting; the control word and the soft pressing plate are not judged, and if one of the functional hard pressing plate and the outlet hard pressing plate is 0, the judging result is that the device is disabled; the control word is not judged, the soft pressing plate is 0, the functional hard pressing plate and the outlet hard pressing plate are not judged, and the judging result is not started.
8. The method for defending and early warning of a system for defending and early warning a transformer substation line and a transformer protection operation mode according to claim 5, wherein the step S1041 is that when the intelligent substation equipment type is judged to be line protection, the logic judgment unit judges logic of the intelligent substation line protection operation mode, which is to logically judge control words, soft pressing plates, GOOSE outlet pressing plates and tripping and closing pressing plates of differential elements, distance elements, zero sequence elements and reclosing elements in the intelligent substation line protection, and output judgment results of the intelligent substation line protection, wherein the logic judgment and judgment results comprise the following contents:
differential element: the control word, the soft pressing plate, the GOOSE outlet pressing plate and the tripping and closing pressing plate are all 1, and the judgment result is tripping; the control word, the soft pressing plate and the tripping and closing pressing plate are all 1, and the GOOSE outlet pressing plate is 0, so that the judgment result is weak current response; the control word is 1, the soft pressing plate is 0, the GOOSE outlet pressing plate is not judged, the tripping and closing pressing plate is 1, and the judgment result is a signal; the control word is 1, the soft pressing plate, the GOOSE outlet pressing plate and the tripping and closing pressing plate are not judged, and the judging result is not started; the control word and the soft pressing plate are not all arranged, and the GOOSE outlet pressing plate and the tripping and closing pressing plate are not judged, so that the judging result is that the differential function is not arranged;
distance element: the control word, the soft pressing plate, the GOOSE outlet pressing plate and the tripping and closing pressing plate are all 1, and the judgment result is that starting is achieved; the control word is 1, any one of the soft pressing plate and the GOOSE outlet pressing plate is 0, the tripping and closing pressing plate is not judged, and the judging result is that the device is disabled; the control word is 0, the soft pressing plate, the GOOSE outlet pressing plate and the tripping and closing pressing plate are not judged, and the judging result is not started;
zero sequence element: the control word, the soft pressing plate, the GOOSE outlet pressing plate and the tripping and closing pressing plate are all 1, and the judgment result is that starting is achieved; the control word is 1, the soft pressing plate and the GOOSE outlet pressing plate are arbitrarily 0, the tripping and closing pressing plate is not judged, and the judging result is that the device is disabled; the control word is 0, the soft pressing plate, the GOOSE outlet pressing plate and the tripping and closing pressing plate are not judged, and the judging result is not started;
reclosing element: the control word, the soft pressing plate, the GOOSE outlet pressing plate and the tripping and closing pressing plate are all 1, and the judgment result is that starting is achieved; the control word is 1, any one of the soft pressing plate and the GOOSE outlet pressing plate is 0, the tripping and closing pressing plate is not judged, and the judging result is that the device is disabled; and if any one of the control word and the soft pressing plate is 0 and the GOOSE outlet pressing plate and the tripping and closing pressing plate are not judged, the judgment result is not throw.
9. The method for defending and early warning of a defending and early warning system of a transformer station circuit and transformer protection operation mode according to claim 5, wherein the step S1042 is characterized in that when the intelligent station equipment type is judged to be transformer protection, a logic judgment unit pair is started, the intelligent station voltage protection operation mode judgment logic is started, and logic judgment and result output are carried out on control words, soft pressing plates, GOOSE outlet pressing plates and tripping and closing pressing plates of a differential element and a backup element in transformer protection as follows:
differential element: the control word, the soft pressing plate, the GOOSE outlet pressing plate and the tripping and closing pressing plate are all 1, and the judgment result is tripping; the control word is not judged, any one of the soft pressing plate and the GOOSE outlet pressing plate is 0, the tripping and closing pressing plate is not judged, and the judgment result is a signal;
backup element: the control word, the soft pressing plate, the GOOSE outlet pressing plate and the tripping and closing pressing plate are all 1, and the judgment result is that starting is achieved; the control word is not judged, one and only one of the soft pressing plate and the GOOSE outlet pressing plate are 0, the tripping and closing pressing plate is not judged, and the judging result is that the device is disabled; and if the control word is not judged, the soft pressing plate and the GOOSE outlet pressing plate are both 0, and the tripping and closing pressing plate is not judged, the judging result is not started.
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