CN117272571B - Visual checking method and system for power grid new equipment starting scheme - Google Patents
Visual checking method and system for power grid new equipment starting scheme Download PDFInfo
- Publication number
- CN117272571B CN117272571B CN202311528895.1A CN202311528895A CN117272571B CN 117272571 B CN117272571 B CN 117272571B CN 202311528895 A CN202311528895 A CN 202311528895A CN 117272571 B CN117272571 B CN 117272571B
- Authority
- CN
- China
- Prior art keywords
- new equipment
- starting
- power grid
- equipment
- text
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000000007 visual effect Effects 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000004458 analytical method Methods 0.000 claims abstract description 23
- 230000003993 interaction Effects 0.000 claims abstract description 10
- 230000002265 prevention Effects 0.000 claims abstract description 6
- 238000004364 calculation method Methods 0.000 claims description 21
- 239000011159 matrix material Substances 0.000 claims description 21
- 238000007689 inspection Methods 0.000 claims description 15
- 238000012795 verification Methods 0.000 claims description 11
- 230000002452 interceptive effect Effects 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 6
- 230000011218 segmentation Effects 0.000 claims description 6
- 238000012800 visualization Methods 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 claims description 4
- 238000013178 mathematical model Methods 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 4
- 230000011664 signaling Effects 0.000 claims description 4
- 238000013528 artificial neural network Methods 0.000 claims description 3
- 125000004122 cyclic group Chemical group 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 230000005283 ground state Effects 0.000 claims description 3
- 238000012163 sequencing technique Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 11
- 230000006870 function Effects 0.000 abstract description 8
- 238000003012 network analysis Methods 0.000 abstract description 6
- 238000004088 simulation Methods 0.000 abstract description 3
- 230000003044 adaptive effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 8
- 238000004590 computer program Methods 0.000 description 7
- 238000012986 modification Methods 0.000 description 6
- 230000004048 modification Effects 0.000 description 6
- 238000012545 processing Methods 0.000 description 4
- 230000009466 transformation Effects 0.000 description 4
- 238000003860 storage Methods 0.000 description 3
- 238000004422 calculation algorithm Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/18—Network design, e.g. design based on topological or interconnect aspects of utility systems, piping, heating ventilation air conditioning [HVAC] or cabling
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F40/00—Handling natural language data
- G06F40/10—Text processing
- G06F40/166—Editing, e.g. inserting or deleting
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F40/00—Handling natural language data
- G06F40/20—Natural language analysis
- G06F40/205—Parsing
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06N—COMPUTING ARRANGEMENTS BASED ON SPECIFIC COMPUTATIONAL MODELS
- G06N3/00—Computing arrangements based on biological models
- G06N3/02—Neural networks
- G06N3/04—Architecture, e.g. interconnection topology
- G06N3/044—Recurrent networks, e.g. Hopfield networks
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2113/00—Details relating to the application field
- G06F2113/04—Power grid distribution networks
Abstract
The invention provides a visual checking method and a visual checking system for a power grid new equipment starting scheme, which are characterized in that text analysis is carried out on the power grid new equipment starting scheme, new equipment ID information obtained through analysis is associated with corresponding starting operation text, network connection relation topology in a starting range after new equipment is added is obtained through network analysis, error prevention check and multidimensional safety check are carried out on each starting operation of the new equipment, a user side and a visual checking terminal side are connected through man-machine interaction, and finally a result is displayed in a visual mode. According to the invention, by combining the functions of error proofing, multidimensional safety checking and man-machine interaction, the adaptive checking function of a starting scheme under multiple scenes of different time dimensions is realized, the whole process simulation preview of starting operation is realized, the visual experience of auditing and countersignature executives on the starting operation of new equipment is improved, the risk management and control level in the starting process of the new equipment is improved, and the problem that auditing countersignature is difficult to execute is solved.
Description
Technical Field
The invention belongs to the technical field of power engineering, and relates to a checking method and system of new equipment of a power grid.
Background
With the rapid development of economy, the demand of electric power is rapidly increasing, and a large amount of capital construction and engineering improvement are put into operation each year. In the power grid engineering, a starting scheme is required to be compiled before the newly added equipment is put into operation so as to verify whether the newly added equipment can be safely put into operation. However, the starting scheme compiled at present is a literal description aiming at newly added equipment, and when an operator manually performs load flow stable calculation safety check work in various operation modes after completing the starting scheme, an intuitive man-machine interface is lacked to display the starting process of the new equipment, and the running state of a power grid in the starting process of the new equipment and even after the starting is difficult to be intuitively embodied; moreover, the current starting scheme cannot guarantee the instantaneity and accuracy of safety check, and the safety risk is difficult to manage and control.
Disclosure of Invention
In order to solve the problems in the background technology, the invention provides a visual checking method and a visual checking system for a new equipment starting scheme of a power grid.
The method of the invention comprises the following steps:
step one, carrying out text analysis on a new equipment starting scheme of a power grid, separating to obtain starting operation text and new equipment ID information, and associating the new equipment ID information with a corresponding starting operation text through text vectorization;
step two, based on the whole network topology structure of the power grid, combining with the ID information of the new equipment, obtaining the power grid connection relation topology in the starting range after adding the new equipment through network analysis;
step three, combining the power grid connection relation topology in the starting range after the new equipment is added with the starting operation of the new equipment, carrying out error prevention inspection on each starting operation, and carrying out multidimensional safety check including state check, tide check and N-1/N-2 check on the network after the new equipment is started;
step four, the user side is connected with the visual checking terminal side, so that the user side can modify the network topology structure at the visual checking terminal side, set the system operation parameters and observe the operation result;
and fifthly, loading and expanding svg graphics based on a browser, and displaying the power grid connection relation topology, error-proof inspection, multi-dimensional security check and operation and running results in a visual form of images and characters in a starting range after new equipment is added by combining an interactive interface.
Further, in the first step, text cleaning is performed based on the input starting scheme text, redundant information except the starting operation text and the new equipment ID information is removed, and the new equipment ID information and the starting operation text are obtained through word segmentation model separation; the starting scheme text is disassembled and separated through a cyclic neural network word segmentation model, so that a starting operation text is obtained; and the new device ID information and the corresponding starting operation text are associated through text vectorization, so that a new device starting operation fixed sentence is generated. The formed new device start operation statement contains the device ID, the start operation item and other objectified information, and can be used for error prevention inspection of the start operation.
In the second step, based on the topology structure of the whole network, the nodes and the wiring structure are analyzed, and the network equipment and the network connection logic are separated from the mathematical model characterized by the nodes and the wiring structure to form a network connection logic table. And generating an adjacency relation matrix in the network connection logic table by taking the obtained equipment ID information to be started as a retrieval condition, and finally forming a power grid connection relation topology in a starting range after new equipment is added.
The network connection logic table is essentially a node association matrix, and three relations of outflow power, uncorrelated power and inflow power between the branches and the nodes are respectively represented by '1, 0-1'; in the network connection logic table, taking an adjacency relation matrix formed by the ID information of equipment to be started as a search condition, shrinking the whole network topology structure, reserving new equipment to be started and stations and equipment related to the new equipment, and finally forming a power grid connection relation topology in a starting range after adding the new equipment; the adjacency relation matrix is an n-order square matrix and comprises all devices in the whole network topology, wherein '1, 0' is used for respectively representing new devices and old devices; the whole network topology structure comprises an upper and a lower stages of plant stations and outgoing lines which are associated with a starting range. The formed power grid connection relation topology in the starting range after the new equipment is put into operation contains information such as equipment connection logic, power flow direction among nodes and the like, and can be used for carrying out multidimensional safety check including state check, tide check and N-1/N-2 check on a network after the new equipment is started by combining with a new equipment starting operation statement.
In the third step, combining the power grid connection relation topology in the starting range after the new equipment is added with the starting operation of the new equipment, judging by utilizing the signal state of the equipment, and performing error-proof detection on the basic operation logic of each starting operation based on an error-proof rule base; based on equipment state judgment, power grid power flow calculation and an N-1 criterion, multidimensional safety check including state check, power flow check and N-1/N-2 check is carried out on the network after the new equipment is started. The formed anti-misoperation checking and safety checking module can be combined with a human-computer interface, can intuitively embody the running state of the power grid in the starting process of new equipment and even after the starting, visually feeds back the anti-misoperation checking and safety checking result, ensures the instantaneity and the accuracy of the anti-misoperation checking and the safety checking of the starting scheme, and enhances the safety risk management and control capability.
Further, the error-preventing rule base is composed of configuration items beginning with 'FiveProtect', representing error-preventing various rules including basic five-prevention rules and advanced check rules, wherein the configuration items are respectively adjusted to '0, 1 and 2', 0 represents that the rule is not started, 1 represents that the rule is started and is set to prompt misoperation in a warning form, and 2 represents that the rule is started and is set to prompt misoperation in a locking form. The formed error-proof rule base expands the advanced check rule based on the basic five-proof rule, and can comprehensively check risks existing in the operation process. And the error-proof level can be set independently according to the requirement, so that the flexibility of the alarm form is improved while the error-proof verification safety is ensured.
The basic five-prevention rule comprises: preventing false pulling, closing the breaker, preventing pulling and closing the isolating switch with load, preventing closing the grounding isolating switch with electricity, preventing closing the isolating switch with the grounding disconnecting switch with the grounding, and preventing false entering the electrified interval. When a certain operation item pulls on the isolating switch, the anti-false detection judges that the isolating switch has load through the topology of the power grid connection relation, and then the basic five-prevention rule takes effect and pops up a prompt.
The advanced verification rule includes: bypass operation rule checking, 3/2 switch operation sequence checking and ring closing and releasing reminding. The 3/2 switch operation sequence checking rule is as follows: when power failure occurs, the 2/3 switch is pulled and separated, and then the side switch is pulled and separated; when power is transmitted, the side switch is closed first, and then the middle switch is closed. The rule of the ring closing and opening reminding is as follows: before the switch is closed, if the electric island numbers of the nodes at the two ends of the switch are different, prompting the system to close the loop when the switch is closed; after the switch is disconnected, if the electric island numbers of the nodes at the two ends of the switch are different, a user is prompted to disconnect the switch, so that the system can be disconnected.
The state check checks the actual state of the new equipment by judging the remote signaling value so as to check whether the dispatching instruction is implemented or not; the power flow check calculates the ground state power flow after the new equipment is started, gives out the voltage of each bus and the load condition of each branch, and judges whether the conditions of load loss, equipment overload and the like exist or not; and checking the result of the base state power flow calculation by the N-1/N-2, automatically performing fault scanning, giving quantitative safety indexes, and sequencing faults comprising bus overvoltage, branch overload and branch disconnection load loss indexes according to the indexes.
The formed safety check module calculates and checks the running conditions of the system such as the equipment state, the network power flow, the bus voltage, the branch load and the like after the new equipment is started by three check modes of state check, power flow check and N-1 check, and ensures the safety of the system after the new equipment is started.
Further, the calculation formula of the bus overvoltage index is as follows:
,/>,
wherein,represent the firstiOvervoltage indicator for individual bus bar->、/>Represent the firstiLower and upper limits of the individual busbar voltages, < >>Represent the firstiAverage value of upper and lower limits of the voltage of the individual bus, +.>Represent the firstiActual values of the individual bus voltages.
The calculation formula of the branch overload index is as follows:
,
wherein,represent the firstiOverload index of branch,/>Represent the firstiMaximum current allowed by the branch, +.>Represent the firstiActual value of the branch current.
The calculation formula of the load loss index of the branch circuit is as follows:
,
wherein,load loss index indicating branch break, +.>Indicating the first caused by the branch circuit breakingiThe load to be cut off is active and,mindicating the total number of lost loads caused by the branch circuit breaking.
The formed N-1/N-2 checking module sorts the severity of possible faults based on the bus overvoltage index, the branch overload index and the branch breaking load loss index, and screens out more serious faults so as to enable a dispatcher to selectively and quickly process the faults.
The invention also provides a visual checking system of the starting scheme of the new equipment of the power grid, which comprises a text analysis module, a network topology analysis module, an error-proof inspection and safety checking module, a man-machine interaction module and a visual module.
The text analysis module is used for carrying out text analysis on a new equipment starting scheme of the power grid, separating to obtain starting operation text and new equipment ID information, and associating the new equipment ID information with the corresponding starting operation text through text vectorization.
The network topology analysis module is based on the whole network topology structure of the power grid, combines new equipment ID information, and obtains the power grid connection relation topology in the starting range after new equipment is added through network analysis.
The error proofing and safety checking module combines the power grid connection relation topology in the starting range after adding the new equipment and the starting operation of the new equipment, performs error proofing on each starting operation, and performs multi-dimensional safety checking including state checking, tide checking and N-1/N-2 checking on the network after starting the new equipment.
The man-machine interaction module is used for connecting the user side with the visual checking terminal side, so that the user side can modify the network topological structure, set the system operation parameters and observe the operation result on the visual checking terminal side.
Based on loading and expanding svg graphics by a browser, the visualization module combines an interactive interface to display the power grid connection relationship topology, error proofing verification, multi-dimensional security check and operation running results in the starting range after new equipment is added in a visual form of images and characters.
Compared with the prior art, the method has the advantages that the text analysis is carried out on the starting scheme of the new equipment of the power grid, the new equipment ID information obtained through analysis is associated with the corresponding starting operation text, the power grid connection relation topology in the starting range after the new equipment is added is obtained through network analysis, the error prevention inspection and the multidimensional safety check are carried out on each starting operation of the new equipment, the user side is associated with the visual check terminal side through man-machine interaction, and finally the result is displayed in a visual mode. According to the invention, by combining the functions of error proofing, multidimensional safety checking and man-machine interaction, the adaptive checking function of a starting scheme under multiple scenes of different time dimensions is realized, the whole process simulation preview of starting operation is realized, the visual experience of auditing and countersignature executives on the starting operation of new equipment is improved, the risk management and control level in the starting process of the new equipment is improved, and the problem that auditing countersignature is difficult to execute is solved.
Drawings
FIG. 1 is a flow chart of the method of the present invention.
Fig. 2 is a system frame diagram of the present invention.
Fig. 3 is a diagram of the topology of the whole network according to the embodiment of the present invention.
Fig. 4 is a topology of an intranet within the scope of a given embodiment of the invention.
FIG. 5 is a flow chart illustrating the operation of the anti-false test and security test module according to the present invention.
FIG. 6 is a flow chart of N-1 verification in the present invention.
Fig. 7 is a flowchart of an algorithm for scanning all line faults according to the present invention.
Detailed Description
The following detailed description of the invention, taken in conjunction with the accompanying drawings, is not intended to limit the invention, but is made merely by way of example, and the advantages of the invention will be more clearly understood. All modifications directly derived or suggested to one skilled in the art from the disclosure of the present invention should be considered as being within the scope of the present invention. Other parts of the examples not described in detail are prior art.
The invention provides a visual checking method of a power grid new equipment starting scheme, wherein the flow is shown in figure 1, and the specific steps are as follows.
Step one, carrying out text analysis on a new equipment starting scheme of the power grid, separating to obtain starting operation text and new equipment ID information, and associating the new equipment ID information with the corresponding starting operation text through text vectorization.
Specifically, based on an input starting scheme text, text cleaning is carried out, redundant information except starting operation text and new equipment ID information is removed, and the new equipment ID information and the starting operation text are obtained through word segmentation model separation; the starting scheme text is disassembled and separated through a cyclic neural network word segmentation model, so that a starting operation text is obtained; and the new device ID information and the corresponding starting operation text are associated through text vectorization, so that a new device starting operation fixed sentence is generated.
The method comprises the steps that text cleaning can be conducted by using a natural language tool kit NLTK based on a Python library; the obtained starting operation text such as impact, opening a switch, closing a knife switch, etc., the obtained new device ID information such as a first electric line, a second electric switch, etc., the generated new device starting operation fixed sentence such as opening the first switch, etc. It has to be noted that here the first and second appliances are used to refer to new device names.
And step two, based on the whole network topology structure of the power grid, combining with the ID information of the new equipment, and obtaining the power grid connection relation topology in the starting range after adding the new equipment through network analysis.
Specifically, based on the full network topology structure, the node and wiring structure are analyzed, and network equipment and network connection logic are separated from the mathematical model characterized by the node and wiring structure to form a network connection logic table. And generating an adjacency relation matrix in the network connection logic table by taking the obtained equipment ID information to be started as a retrieval condition, and finally forming a power grid connection relation topology in a starting range after new equipment is added.
The network connection logic table is essentially a node association matrix, and three relations of outflow power, non-association and inflow power between the branch and the node are respectively represented by '1, 0-1'; in the network connection logic table, taking an adjacency relation matrix formed by the ID information of equipment to be started as a search condition, shrinking the whole network topology structure, reserving new equipment to be started and stations and equipment related to the new equipment, and finally forming a power grid connection relation topology in a starting range after adding the new equipment; the adjacency relation matrix is an n-order square matrix and comprises all devices in the whole network topology, and '1, 0' is used for respectively representing new devices and old devices; in the invention, the whole network topology structure comprises an upper and a lower stages of plant stations and outgoing lines associated with a starting range.
And thirdly, combining the power grid connection relation topology in the starting range after the new equipment is added with the starting operation of the new equipment, carrying out error prevention inspection on each starting operation, and carrying out multidimensional safety check including state check, tide check and N-1/N-2 check on the network after the new equipment is started.
Specifically, combining the power grid connection relation topology in the starting range after the new equipment is added with the starting operation of the new equipment, judging by utilizing the signal state of the equipment, and performing error-proof detection on the basic operation logic of each starting operation based on an error-proof rule base; based on equipment state judgment, power grid power flow calculation and an N-1 criterion, multidimensional safety check including state check, power flow check and N-1/N-2 check is carried out on the network after the new equipment is started.
More specifically, the error-preventing rule base is composed of configuration items beginning with "FiveProtect", representing error-preventing various rules including basic five-prevention rules and advanced verification rules, wherein the configuration items are respectively adjusted to be "0,1,2",0 represents that the rule is not enabled, 1 represents that the rule is enabled and the rule is set to prompt the error operation in a warning form, and 2 represents that the rule is enabled and the rule is set to prompt the error operation in a locking form.
The basic five-prevention rule comprises: preventing false pulling, closing the breaker, preventing pulling and closing the isolating switch with load, preventing closing the grounding isolating switch with electricity, preventing closing the isolating switch with the grounding disconnecting switch with the grounding, and preventing false entering the electrified interval. When a certain operation item pulls on the isolating switch, the anti-false detection judges that the isolating switch has load through the topology of the power grid connection relation, and then the basic five-prevention rule takes effect and pops up a prompt.
The advanced verification rules include: bypass operation rule checking, 3/2 switch operation sequence checking and ring closing and releasing reminding. The 3/2 switch operation sequence checking rule is as follows: when power failure occurs, the 2/3 switch is pulled and separated, and then the side switch is pulled and separated; when power is transmitted, the side switch is closed first, and then the middle switch is closed. The rule of the ring closing and releasing reminding is as follows: before the switch is closed, if the electric island numbers of the nodes at the two ends of the switch are different, prompting the system to close the loop when the switch is closed; after the switch is disconnected, if the electric island numbers of the nodes at the two ends of the switch are different, a user is prompted to disconnect the switch, so that the system can be disconnected.
The state check checks the actual state of the new equipment by judging the remote signaling value so as to check whether the dispatching instruction is implemented or not; the power flow check calculates the ground state power flow after the new equipment is started, gives out the voltage of each bus and the load condition of each branch, and judges whether the conditions of load loss, equipment overload and the like exist or not; and checking the result of the base state power flow calculation by the N-1/N-2, automatically performing fault scanning, giving quantitative safety indexes, and sequencing faults comprising bus overvoltage, branch overload and branch disconnection load loss indexes according to the indexes.
The calculation formula of the bus overvoltage index is as follows:
,/>,
wherein,represent the firstiOvervoltage indicator for individual bus bar->、/>Represent the firstiLower and upper limits of the individual busbar voltages, < >>Represent the firstiAverage value of upper and lower limits of the voltage of the individual bus, +.>Represent the firstiActual values of the individual bus voltages.
The calculation formula of the branch overload index is as follows:
,
wherein,represent the firstiOverload index of branch,/>Represent the firstiMaximum current allowed by the branch, +.>Represent the firstiActual value of the branch current.
The calculation formula of the load loss index of the branch circuit is as follows:
,
wherein,load loss index indicating branch break, +.>Indicating the first caused by the branch circuit breakingiThe load to be cut off is active and,mindicating the total number of lost loads caused by the branch circuit breaking.
Step four, the user side is connected with the visual checking terminal side, so that the user side can modify the network topology structure at the visual checking terminal side, set the system operation parameters and observe the operation result;
and fifthly, loading and expanding svg graphics based on a browser, and displaying the power grid connection relation topology, error-proof inspection, multi-dimensional security check and operation and running results in a visual form of images and characters in a starting range after new equipment is added by combining an interactive interface.
The invention also provides a visual checking system of the starting scheme of the new equipment of the power grid, which consists of a text analysis module, a network topology analysis module, an error-proof inspection and safety checking module, a man-machine interaction module and a visual module.
The text analysis module is used for carrying out text analysis on a new equipment starting scheme of the power grid, separating to obtain starting operation text and new equipment ID information, and associating the new equipment ID information with the corresponding starting operation text through text vectorization.
The network topology analysis module is based on the whole network topology structure of the power grid, combines the ID information of the new equipment, and obtains the power grid connection relation topology in the starting range after the new equipment is added through network analysis.
Combining the error proofing and safety checking module to add the power grid connection relation topology in the starting range after the new equipment and the starting operation of the new equipment, performing error proofing on each starting operation, and performing multidimensional safety check including state check, tide check and N-1/N-2 check on the network after the new equipment is started;
the man-machine interaction module is used for connecting the user side with the visual checking terminal side, so that the user side can modify the network topology structure, set the system operation parameters and observe the operation result at the visual checking terminal side;
based on browser loading and expanding svg graphics, the visualization module combines an interactive interface to display the power grid connection relationship topology, error proofing inspection, multi-dimensional security check and operation and running results in the form of image and text visualization in the starting range after new equipment is added.
The specific implementation manner of each module in the system of the present invention is described in the above method, and will not be repeated here.
Examples
In a certain regional debugging project, a line is put into a certain new equipment of a power grid for impact test, the whole network topology structure is shown in fig. 3, and the starting scheme comprises the following steps:
(1) first-order transformation: all equipment of the positive bus is adjusted to the auxiliary bus, a bus-tie switch No. 1 is pulled open, long charging protection is started, and bus differential protection is started normally;
(2) second-order transformation: changing the voltage change of the positive bus and the negative bus from cold standby to running, and changing the second switch of the No. 1 line from cold standby to running on the positive bus;
(3) first-order transformation: the over-current protection of a primary switch and a secondary switch of a No. 1 line is started, and the switch is changed from cold standby to hot standby for a positive bus;
(4) first-order transformation: and (3) disabling the busbar differential protection, closing a busbar combination No. 1 switch, closing a No. 1 line two switch, and impacting the No. 1 line and related equipment three times.
The system and the method of the invention are adopted to visually check the starting scheme of the new equipment.
After the system receives the starting scheme, text analysis is carried out on a new equipment starting scheme of the power grid, and a starting operation text of pulling-off, starting protection and inverting a bus and new equipment ID information of a No. 1 line, a No. 1 switch and a No. 1 line, a No. 1 switch are obtained through separation, the new equipment ID information and the corresponding starting operation text are associated through text vectorization, and fixed operation sentences such as pulling-off the No. 1 switch and starting the No. 1 line, a No. two switch, overcurrent protection and the like are generated.
Analyzing the substation nodes, the load nodes and the wiring structures of the substation nodes based on the whole network topological structure of the power grid received by the system, and converting the represented physical model into a connection logic table capable of representing the connection relation of equipment. In the connection logic table, an adjacency relation matrix generated by the equipment ID information to be started is used as a search condition, and the whole network topology range of the power grid is reduced, so that the power grid connection relation topology in the starting range is obtained. In the embodiment provided by the application, the whole network topology structure of the power grid is shown in fig. 3, and the new starting equipment is a No. 1 line, so that the power grid connection relation topology in the starting range only keeps two stages of stations and lines associated with the No. 1 line, as shown in fig. 4.
And step three, combining the power grid connection relation topology in the starting range after the new equipment is added with the starting operation of the new equipment, and carrying out error-proof inspection and safety inspection, wherein a flow chart is shown in fig. 5. Firstly, traversing an error-preventing rule base for each operation statement, and if one of the operation statements does not accord with the error-preventing rule, popping up an alarm prompt by the system; if all sentences accord with the rule, the error-proof check passes, and the system performs state check, tide check and N-1 check on the new network. During the period, if any check link fails, the system pops up an alarm prompt.
In particular, the embodiments presented relate to error proofing of operating disconnector devices in an error proofing link. If the load of the isolating switch is scheduled as the positive bus is reversed to the auxiliary bus by the first-stage change, the rule of preventing the load from pulling and closing the isolating switch is triggered and the system pops up an alarm prompt if the load of the isolating switch is not scheduled.
In the safety verification link, the module firstly checks the actual state of the equipment based on the remote signaling value to check whether the operation instructions such as the switch No. 1 is pulled off, the bus differential protection is started or not, and if the first and last states of the operation do not meet the requirement of the dispatching instruction, an alarm prompt is popped up.
And secondly, after the state check is finished, the system calls a dispatcher power flow calculation module, performs simulation and pre-modeling calculation on the base state power flow after the new equipment is started, and returns the result to the power flow check module. After the module receives the result, judging the load loss and the equipment overload, if the load loss and the equipment overload are out of limit, popping up early warning, and sending the load flow calculation result to an N-1 checking link.
The N-1 checking flow chart is shown in fig. 6, after the N-1 checking link reads the power flow calculation result, the fault indexes of line faults, transformer faults, bus faults, generator faults and the like are automatically scanned in sequence, and the algorithm flow chart for scanning all the line faults is shown in fig. 7. In the embodiment, the started new equipment is a line 1, and the automatic fault scanning link carries out fault scanning on the lines 1 and 2, the primary positive and negative bus, the secondary positive and negative bus, the primary transformer and the secondary transformer based on power flow calculation. In the scanning process, if a certain device has potential safety hazard, the system pops up an alarm prompt.
And step four, the user side is connected with the visual checking terminal side, so that the user side can modify the network topology structure at the visual checking terminal side, set the system operation parameters and observe the operation result.
And fifthly, loading and expanding svg graphics based on a browser, and displaying the power grid connection relation topology, error-proof inspection, multi-dimensional security check and operation and running results in a visual form of images and characters in a starting range after new equipment is added by combining an interactive interface.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein. The solutions in the embodiments of the present application may be implemented in various computer languages, for example, object-oriented programming language Java, and an transliterated scripting language JavaScript, etc.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the spirit or scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to cover such modifications and variations.
Claims (9)
1. The visual checking method of the power grid new equipment starting scheme is characterized by comprising the following steps of:
step one, carrying out text analysis on a new equipment starting scheme of a power grid, separating to obtain starting operation text and new equipment ID information, and associating the new equipment ID information with a corresponding starting operation text through text vectorization;
analyzing the node and wiring structure based on the full-network topological structure, and separating network equipment and network connection logic from the represented mathematical model to form a network connection logic table; generating an adjacency relation matrix in a network connection logic table by taking the obtained ID information of the equipment to be started as a retrieval condition, and finally forming a power grid connection relation topology in a starting range after new equipment is added; the network connection logic table is essentially a node association matrix, and three relations of outflow power, uncorrelated power and inflow power between the branches and the nodes are respectively represented by '1, 0-1'; in the network connection logic table, taking an adjacency relation matrix formed by the ID information of equipment to be started as a search condition, shrinking the whole network topology structure, reserving new equipment to be started and stations and equipment related to the new equipment, and finally forming a power grid connection relation topology in a starting range after adding the new equipment; the adjacency relation matrix is an n-order square matrix and comprises all devices in the whole network topology, and '1, 0' is used for respectively representing new devices and old devices; the full-network topological structure comprises an upper-level factory station and a lower-level factory station which are associated with a starting range and an outgoing line;
step three, combining the power grid connection relation topology in the starting range after the new equipment is added with the starting operation of the new equipment, carrying out error prevention inspection on each starting operation, and carrying out multidimensional safety check including state check, tide check and N-1/N-2 check on the network after the new equipment is started;
step four, the user side is connected with the visual checking terminal side, so that the user side can modify the network topology structure at the visual checking terminal side, set the system operation parameters and observe the operation result;
and fifthly, loading and expanding svg graphics based on a browser, and displaying the power grid connection relation topology, error-proof inspection, multi-dimensional security check and operation and running results in a visual form of images and characters in a starting range after new equipment is added by combining an interactive interface.
2. The visual checking method for the power grid new equipment starting scheme according to claim 1, wherein the visual checking method is characterized by comprising the following steps of: in the first step, text cleaning is carried out based on an input starting scheme text, redundant information except starting operation text and new equipment ID information is removed, and the new equipment ID information and the starting operation text are obtained through word segmentation model separation; the starting scheme text is disassembled and separated through a cyclic neural network word segmentation model, so that a starting operation text is obtained; and the new device ID information and the corresponding starting operation text are associated through text vectorization, so that a new device starting operation fixed sentence is generated.
3. The visual checking method for the power grid new equipment starting scheme according to claim 2, wherein the visual checking method is characterized by comprising the following steps of: combining the power grid connection relation topology in the starting range after the new equipment is added with the starting operation of the new equipment, judging by utilizing the signal state of the equipment, and performing error-proof detection on the basic operation logic of each starting operation based on an error-proof rule base; based on equipment state judgment, power grid power flow calculation and an N-1 criterion, multidimensional safety check including state check, power flow check and N-1/N-2 check is carried out on the network after the new equipment is started.
4. A method for visual verification of a new power grid equipment start-up scheme according to claim 3, wherein: the error-preventing rule library consists of configuration items beginning with ' FiveProtect ', representing error-preventing various rules including basic five-prevention rules and advanced check rules, wherein the configuration items are respectively adjusted to 0,1 and 2 ', 0 represents that the rule is not started, 1 represents that the rule is started and the rule is set to prompt misoperation in a warning form, and 2 represents that the rule is started and the rule is set to prompt misoperation in a locking form.
5. The visual checking method for the power grid new equipment starting scheme according to claim 4, wherein the visual checking method is characterized by comprising the following steps of: the basic five-prevention rule comprises: preventing false pulling, closing a breaker, preventing pulling and closing a disconnecting switch with load, preventing closing a grounding disconnecting switch with power, preventing closing a disconnecting switch with a grounding disconnecting switch with power, and preventing false entering a power-on interval; when a certain operation item pulls on the isolating switch, the anti-false detection judges that the isolating switch has load through the topology of the power grid connection relation, and then the basic five-prevention rule takes effect and pops up a prompt.
6. The visual checking method for the power grid new equipment starting scheme according to claim 4, wherein the visual checking method is characterized by comprising the following steps of: the advanced verification rule includes: checking a bypass operation rule, checking a 3/2 switch operation sequence, and prompting to close and open a ring; the 3/2 switch operation sequence checking rule is as follows: when power failure occurs, the 2/3 switch is pulled and separated, and then the side switch is pulled and separated; when power is transmitted, the side switch is closed firstly, and then the middle switch is closed; the rule of the ring closing and opening reminding is as follows: before the switch is closed, if the electric island numbers of the nodes at the two ends of the switch are different, prompting the system to close the loop when the switch is closed; after the switch is disconnected, if the electric island numbers of the nodes at the two ends of the switch are different, a user is prompted to disconnect the switch, so that the system can be disconnected.
7. A method for visual verification of a new power grid equipment start-up scheme according to claim 3, wherein: the state check checks the actual state of the new equipment by judging the remote signaling value so as to check whether the dispatching instruction is implemented or not; the power flow check calculates the ground state power flow after the new equipment is started, gives out the voltage of each bus and the load condition of each branch, and judges whether the conditions of load loss, equipment overload and the like exist or not; and checking the result of the base state power flow calculation by the N-1/N-2, automatically performing fault scanning, giving quantitative safety indexes, and sequencing faults comprising bus overvoltage, branch overload and branch disconnection load loss indexes according to the indexes.
8. The visual checking method for the power grid new equipment starting scheme according to claim 7, wherein the visual checking method is characterized by comprising the following steps of: the calculation formula of the bus overvoltage index is as follows:
,/>,
wherein,represent the firstiOvervoltage indicator for individual bus bar->、/>Represent the firstiThe lower and upper limits of the individual bus voltages,represent the firstiAverage value of upper and lower limits of the voltage of the individual bus, +.>Represent the firstiActual values of the individual busbar voltages;
the calculation formula of the branch overload index is as follows:
,
wherein,represent the firstiOverload index of branch,/>Represent the firstiMaximum current allowed by the branch, +.>Represent the firstiAn actual value of the branch current;
the calculation formula of the load loss index of the branch circuit is as follows:
,
wherein,load loss index indicating branch break, +.>Indicating the first caused by the branch circuit breakingiThe load to be cut off is active and,mindicating the total number of lost loads caused by the branch circuit breaking.
9. A visual checking system of a new equipment starting scheme of a power grid is characterized in that: the system comprises a text analysis module, a network topology analysis module, an error-proof inspection and safety check module, a man-machine interaction module and a visualization module;
the text analysis module is used for carrying out text analysis on a new equipment starting scheme of the power grid, separating to obtain starting operation text and new equipment ID information, and associating the new equipment ID information with a corresponding starting operation text through text vectorization;
the network topology analysis module analyzes the node and wiring structure based on the whole network topology structure, and separates network equipment and network connection logic from the represented mathematical model to form a network connection logic table; generating an adjacency relation matrix in a network connection logic table by taking the obtained ID information of the equipment to be started as a retrieval condition, and finally forming a power grid connection relation topology in a starting range after new equipment is added; the network connection logic table is essentially a node association matrix, and three relations of outflow power, uncorrelated power and inflow power between the branches and the nodes are respectively represented by '1, 0-1'; in the network connection logic table, taking an adjacency relation matrix formed by the ID information of equipment to be started as a search condition, shrinking the whole network topology structure, reserving new equipment to be started and stations and equipment related to the new equipment, and finally forming a power grid connection relation topology in a starting range after adding the new equipment; the adjacency relation matrix is an n-order square matrix and comprises all devices in the whole network topology, and '1, 0' is used for respectively representing new devices and old devices; the full-network topological structure comprises an upper-level factory station and a lower-level factory station which are associated with a starting range and an outgoing line;
the error proofing and safety checking module combines the power grid connection relation topology in the starting range after adding new equipment and the starting operation of the new equipment, performs error proofing on each starting operation, and performs multi-dimensional safety checking including state checking, tide checking and N-1/N-2 checking on the network after starting the new equipment;
the man-machine interaction module is used for connecting the user side with the visual checking terminal side, so that the user side can modify the network topological structure, set the system operation parameters and observe the operation result on the visual checking terminal side;
based on loading and expanding svg graphics by a browser, the visualization module combines an interactive interface to display the power grid connection relationship topology, error proofing verification, multi-dimensional security check and operation running results in the starting range after new equipment is added in a visual form of images and characters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311528895.1A CN117272571B (en) | 2023-11-16 | 2023-11-16 | Visual checking method and system for power grid new equipment starting scheme |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311528895.1A CN117272571B (en) | 2023-11-16 | 2023-11-16 | Visual checking method and system for power grid new equipment starting scheme |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117272571A CN117272571A (en) | 2023-12-22 |
| CN117272571B true CN117272571B (en) | 2024-03-29 |
Family
ID=89216264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311528895.1A Active CN117272571B (en) | 2023-11-16 | 2023-11-16 | Visual checking method and system for power grid new equipment starting scheme |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117272571B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113746205A (en) * | 2021-09-15 | 2021-12-03 | 广东电网有限责任公司广州供电局 | One-button programmed remote operation method based on network-side collaborative safety error-proof check |
| CN115693951A (en) * | 2022-11-15 | 2023-02-03 | 云南电网有限责任公司红河供电局 | Second-level intelligent operation sequence control method based on power grid OCS (online charging system) |
| CN115689181A (en) * | 2022-10-24 | 2023-02-03 | 阿里云计算有限公司 | Method, system and non-transitory computer readable medium for error proofing of power system |
| CN115827718A (en) * | 2022-01-14 | 2023-03-21 | 国网山西省电力公司电力科学研究院 | Panorama display method and device for inertia of electric power system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2991337C (en) * | 2017-01-11 | 2022-05-17 | Abl Ip Holding Llc | Asset tracking using active wireless tags that report via a local network of connected beacons |
-
2023
- 2023-11-16 CN CN202311528895.1A patent/CN117272571B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113746205A (en) * | 2021-09-15 | 2021-12-03 | 广东电网有限责任公司广州供电局 | One-button programmed remote operation method based on network-side collaborative safety error-proof check |
| CN115827718A (en) * | 2022-01-14 | 2023-03-21 | 国网山西省电力公司电力科学研究院 | Panorama display method and device for inertia of electric power system |
| CN115689181A (en) * | 2022-10-24 | 2023-02-03 | 阿里云计算有限公司 | Method, system and non-transitory computer readable medium for error proofing of power system |
| CN115693951A (en) * | 2022-11-15 | 2023-02-03 | 云南电网有限责任公司红河供电局 | Second-level intelligent operation sequence control method based on power grid OCS (online charging system) |
Non-Patent Citations (3)
| Title |
|---|
| Supporting Scope Tracking and Visualization for Very Large-scale Requirements Engineering-Utilizing FSC+, Decision Patterns, and Atomic Decision Visualizations;Krzysztof Wnuk 等;《IEEE Transactions on Pattern Analysis and Machine Intelligence》;第42卷(第1期);47-74 * |
| 基于关键拓扑变动项辨识的调度操作潮流校核方法;陈俊全 等;《机械与电子》;第38卷(第1期);23-26、31 * |
| 电厂临时接入500 kV系统对山西电网影响分析;芦晓辉 等;《山西电力》(第3期);18-21 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117272571A (en) | 2023-12-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102035202B (en) | Network reconfiguration system | |
| CN108376966B (en) | Method and system for analyzing correlation relationship between misoperation-preventive locking logic intervals of intelligent substation | |
| Hardiman et al. | An advanced tool for analyzing multiple cascading failures | |
| CN102957203B (en) | Electrical equipment anti-misoperation method, device and system | |
| CN110166483B (en) | Power grid fault and network attack identification method, device and equipment | |
| Guo et al. | An analytic model-based approach for power system alarm processing employing temporal constraint network | |
| CN108090674A (en) | The risk assessment of the area power grid method of operation and aid decision-making method and system | |
| CN105379135A (en) | Real time, automatic diagnostic system and method for electric networks | |
| CN110867958A (en) | Automatic fault identification and alarm method for electric power system | |
| CN117272571B (en) | Visual checking method and system for power grid new equipment starting scheme | |
| CN113449044A (en) | Intelligent station equipment maintenance safety measure automatic generation method and device based on learning inference machine | |
| CN116050197A (en) | Intelligent power grid fault disposal auxiliary decision-making system | |
| CN113095952B (en) | Power grid splitting early warning method and system considering real-time and N-X forecast information | |
| CN115378127A (en) | Fault depth diagnosis method based on multi-dimensional data real-time analysis of power grid equipment | |
| CN115940394A (en) | Method for setting multi-style configuration diagram of automatic switch of distribution network line | |
| CN106022950B (en) | Power distribution network secondary equipment type identification method and system | |
| Srinivasan et al. | Intelligent operation of distribution network | |
| Ashouri et al. | Fault diagnosis modeling of power systems using Petri Nets | |
| Teo et al. | Artificial intelligence in diagnosis and supply restoration for a distribution network | |
| Hor et al. | Knowledge extraction from intelligent electronic devices | |
| CN111965478A (en) | Method and system for determining short-circuit current by considering transformer phase shifting effect | |
| CN114069615B (en) | Method for searching adjustable unit to eliminate tide overrun based on section active sensitivity | |
| CN103378597A (en) | Inductive regional power grid accident exercise system | |
| CN107316135B (en) | Risk quantitative evaluation method for switch and disconnecting link operation process | |
| Kang et al. | Analysis and solutions to unusual differential relay misoperation during external disturbance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |