CN116304579A - Event alarm reasoning method and system based on transformer substation model and rule instantiation - Google Patents
Event alarm reasoning method and system based on transformer substation model and rule instantiation Download PDFInfo
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Abstract
The method and the system for reasoning event alarms based on the transformer substation model and rule instantiation acquire standard signals and standard intervals of the transformer substation model by utilizing transformer substation data acquired by a centralized control station system and a transmission relation of the transformer substation data; obtaining an event reasoning rule through logic operation of standard signals in a standard interval; in the standard interval, updating standard signals in the event reasoning rule by using actual measurement signals of equipment in the actual interval of the transformer substation corresponding to the maximum comprehensive similarity to obtain an instantiated event reasoning rule; the instantiated event reasoning rule is displayed by a logic reasoning graph; and acquiring real-time alarm information of the centralized control station system, carrying out event reasoning according to the logic reasoning diagram, and sending out an event alarm. The invention reduces the configuration difficulty of the complicated event reasoning rule in a visual mode, automatically verifies the event reasoning instantiation rule in advance by using the analog signal, and improves the efficiency of configuring and verifying the complicated event reasoning logic.
Description
Technical Field
The application belongs to the technical field of centralized control stations or substation monitoring, and particularly relates to an event alarm reasoning method and system based on substation models and rule instantiation.
Background
With the rapid development of the power system, the scale of the transformer substation equipment is continuously enlarged, the monitoring range of the transformer substation monitoring system and the centralized control station equipment monitoring system is continuously enlarged, and primary equipment, secondary equipment, auxiliary equipment, monitoring cameras, inspection robots and physical areas of the transformer substation are covered.
The monitoring and analysis of large-scale data generate a large amount of alarm information, the alarms are lack of effective organization, the scattered alarm information causes difficulty to operation monitoring staff, the accident is difficult to accurately qualify and locate, and the quick handling of the accident is affected; in the prior art 1 (CN 114050654A), a transformer substation monitoring information event alarm method and device are provided, the construction of a standardized processing framework of a transformer substation monitoring application scene is realized, the related rule configuration and inspection difficulty is high, and the configuration and verification efficiency is low when facing complex logic. In the prior art 2 (CN 114186764 a), a method and an apparatus for extracting features of monitoring information of a substation are provided, by extracting basic features, status features and time sequence features of monitoring information of a substation, correct and dimension-reduced high-quality data is provided for data analysis from the substation, an event alarm function represented by the prior art 2 is mainly implemented based on keyword filtering and signal combination, a rule configuration method through form combination is not intuitive, complex logic is difficult to express, direct users are difficult to edit and supplement and debug rules, and support for operation monitoring staff is limited. The prior art 3 (CN 115328970 a) discloses a knowledge extraction system for power grid fault event reasoning, which is used for preprocessing collected power grid fault event reasoning data to obtain a corpus, extracting attributes and relations of events, and is used for realizing reasoning assistance and intelligent reasoning of power grid fault events, and whether a method for extracting event reasoning knowledge by using an artificial intelligent method represented by the prior art 3 effectively depends on the quantity and quality of training data, and because actual power grid faults are not frequent, case data usually has the problem of incomplete fault characteristic information, and the defect of high quality cases limits the practicability of the method.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides an event alarm reasoning method and system based on a transformer substation model and rule instantiation, which are characterized in that a typical interval is established based on a typical equipment signal model of a transformer substation, the reasoning rule of an event is edited in a visual mode, a typical signal and an actual measurement signal of the transformer substation used by the reasoning rule are matched through a similarity algorithm, so that the general reasoning rule is instantiated as an engineering reasoning rule, various alarm signals generated by a monitoring system are received in real time and logically inferred, and trivial alarm information is organized into an event alarm report.
The invention adopts the following technical scheme.
An event alarm reasoning method based on transformer substation model and rule instantiation comprises the following steps:
step 3, in the standard interval, standard signals of the transformer substation model are subjected to logic operation to obtain a first-stage logic node; taking a first-stage logic node as a starting point, and in the set effective input time, obtaining a last-stage logic node by the next-stage logic node through logic operation, and finally outputting 1 logic node as an event reasoning rule of the standard interval;
The standard signals are classified according to the operation data, the action information, the alarm information and the control command.
Repeating the step 3, and obtaining a plurality of event reasoning rules at each standard interval; forming a standard event reasoning rule list by utilizing a plurality of event reasoning rules corresponding to each standard interval;
the event reasoning rule list adopts a list structure of substation, voltage level, interval and event reasoning rules.
The logical operation includes: and, or, not, X selects Y and the order varies.
The input effective time of each stage of logic nodes is set to be 20 seconds.
In step 4, extracting keywords and voltage levels from actual interval names in the transformer substation, and automatically matching to obtain standard intervals based on a semantic similarity method;
and calculating the similarity of the device names between the names of the models corresponding to the standard signals and the names of the devices in the actual interval based on a semantic similarity method, and calculating the similarity of the signal names between the standard signals and the actual measurement signals of the devices in the actual interval based on a maximum similarity subsequence algorithm of the character strings, wherein the actual measurement signals are preferably the actual measurement signals of the devices in the actual interval corresponding to the maximum similarity of the device names.
In step 4, the sequence of the standard signals in the event reasoning rule is used as the setting sequence.
The logic reasoning diagram shows the actual measurement signals, the logic nodes and the connection relation among the logic nodes in the instantiated event reasoning rule.
In step 5, the instantiated event reasoning rule is encoded according to binary system to obtain a binary system file, wherein the binary system file comprises the ID of the actual measurement signal, the name of the actual measurement signal, a logic node, the effective input time and the definition of the output event information;
when the actual measurement signal of a certain event reasoning rule changes, checking whether the output of a first-stage logic node is true or not through logic operation of the actual measurement signal according to a logic reasoning diagram, if yes, checking whether the output of a last-stage logic node is true or not, otherwise, sending alarm information according to the definition of output event information; if the output is true but no upper-level logic node exists, namely the logic node is the highest-level logic node, alarm information is sent according to the definition of the output event information;
when the input of each stage of logic node becomes true, the change moment of the input signal is recorded, and when the input effective time is exceeded, the input signal is invalid, and alarm information is sent according to the definition of the output event information.
An event alert reasoning system based on substation model and rule instantiation, comprising:
the system comprises a standardization module, a rule establishment module, a rule instantiation module and an reasoning and alarming module;
the standardized module is used for utilizing the substation data acquired by the centralized control station system as a standard signal of a substation model; determining the connection relation between the transformer substation models according to the transmission relation between the transformer substation data acquired by the centralized control station system, wherein the transformer substation models and the connection relation form a standard interval; the standard interval name and the actual interval in the transformer substation adopt the same naming rule;
the rule building module is used for obtaining a first-level logic node from standard signals of the transformer substation model through logic operation in a standard interval; taking a first-stage logic node as a starting point, and in the set effective input time, obtaining a last-stage logic node by the next-stage logic node through logic operation, and finally outputting 1 logic node as an event reasoning rule of the standard interval;
the rule instantiation module is used for selecting standard intervals according to the actual interval names in the transformer substation; in the standard interval, calculating the device name similarity between the standard signal corresponding model and the device in the actual interval and the signal name similarity between the standard signal and the actual measurement signal of the device in the actual interval according to the set sequence, and taking the weighted sum of the device name similarity and the signal name similarity as the comprehensive similarity; updating standard signals in the event reasoning rule by using actual measurement signals of equipment in the actual interval of the transformer substation corresponding to the maximum comprehensive similarity to obtain an instantiated event reasoning rule;
the reasoning and alarming module is used for displaying the instantiated event reasoning rule by using a logic reasoning diagram; and acquiring real-time alarm information of the centralized control station system, carrying out event reasoning according to the logic reasoning diagram, and sending out an event alarm.
Compared with the prior art, the method has the advantages that the standard signals of the substation equipment are used as input, the substation event reasoning rules are visually described by using the cascade combination of logical operators, the method has the advantages of convenience in use and easiness in understanding, and the method is beneficial to operation and maintenance personnel to summarize experience and refine complex event reasoning rules; in the engineering configuration stage, the input signals of the general event reasoning rules are automatically mapped based on an actual transformer substation model, a transformer substation event warning reasoning rule instance file is generated, and the validity of the reasoning rules can be verified in advance through analog signals; in the operation stage, by loading the event alarm reasoning rule instance file of the transformer substation, an event reasoning data structure formed by input signals, logic nodes and connection relations thereof is created in the memory, and various types of trivial alarm information of the received monitoring system are quickly arranged into an event alarm report.
The invention reduces the configuration difficulty of the complicated event reasoning rule in a visual mode, automatically verifies the event reasoning instantiation rule in advance by using the analog signal, and improves the efficiency of configuring and verifying the complicated event reasoning logic.
Drawings
FIG. 1 is a flow chart of an event alarm reasoning method based on substation model and rule instantiation;
FIG. 2 is a schematic diagram of a signal model of a typical device in an embodiment of the invention;
FIG. 3 is a schematic diagram of typical intervals according to an embodiment of the present invention;
fig. 4 is a diagram of 220kV line equipment in an embodiment of the invention;
fig. 5 is a schematic diagram of an inference rule of "220kV line breaker a phase trip, coincidence success" in the embodiment of the invention;
FIG. 6 is a schematic diagram of an event inference rule under an intermediate scenario in an embodiment of the present invention;
fig. 7 is a schematic diagram illustrating event inference rule instantiation under an intermediate scenario in an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. The embodiments described herein are merely some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art without inventive faculty, are within the scope of the invention, based on the spirit of the invention.
The invention provides an event alarm reasoning method based on transformer substation model and rule instantiation, which is shown in figure 1 and comprises the following steps:
The substation model comprises: a model of primary equipment, a model of secondary equipment, and a model of auxiliary equipment.
The primary equipment comprises 13 types of transformers, circuit breakers, GIS (Gas Insulated Switchgear, gas insulated fully-closed combined electrical appliance), disconnecting link, circuit, bus, capacitor reactor, voltage and current transformer, arc suppression coil, high reactance, station electricity consumption, direct current system and the like.
The secondary equipment comprises 25 types of transformer protection, breaker protection, line protection (220 kV and above), line protection (110 kV and below), bus protection (three-half wiring), bus connection (segmentation) protection, low-voltage line protection and measurement integration, capacitor protection, low-impedance protection, high-impedance protection, station transformer protection, neutral point isolation device, spare power automatic switching, low-frequency load shedding, overload combined cutting, fault splitting device, stability control device, intelligent terminal, merging unit, acquisition execution unit, measurement and control device, multifunctional measurement and control device, network safety monitoring device, other equipment and the like.
The auxiliary equipment comprises 6 types of primary equipment on-line monitoring devices, safety defending equipment, fire fighting equipment, dynamic ring system equipment, video monitoring equipment, monitoring robots and the like.
The model of each type of equipment contains a series of standard signals, and the standard signals are organized according to the categories of operation data, action information, alarm information, control commands and the like. As shown in fig. 2, the standard signals of the circuit breaker in the primary equipment model include: running data, action information and control commands; wherein the operational data includes metrology data and position states.
Specifically, the standard interval includes: and when the same equipment model is contained in the same standard interval, the alias of the equipment model is increased to distinguish.
Specifically, standard intervals are established according to the 13-class primary device, the 25-class secondary device and the 6-class auxiliary device, as shown in fig. 3. Taking a standard interval of 220kV line as an example, as shown in fig. 4, the device consists of a line, a breaker, a disconnecting link, a measurement and control device, a GIS, a merging unit, an intelligent terminal and line protection (220 kV and above); the merging unit, the intelligent terminals and the line protection (220 kV and above) are configured in double sets, and are distinguished through aliases, for example, the intelligent terminals are distinguished by adopting a first set of intelligent terminals and a second set of intelligent terminals.
Step 3, in the standard interval, standard signals of the transformer substation model are subjected to logic operation to obtain a first-stage logic node; taking a first-stage logic node as a starting point, and in the set effective input time, obtaining a last-stage logic node by the next-stage logic node through logic operation, and finally outputting 1 logic node as an event reasoning rule of the standard interval; and forming a standard event reasoning rule list by utilizing a plurality of event reasoning rules corresponding to each standard interval.
The event reasoning rule list adopts a list structure of substation/voltage level/interval/event reasoning rules.
Each standard interval corresponds to a plurality of event inference rules.
Among them, logical operations include, but are not limited to: and, or, not, X selects Y, sequential variations, etc.
Taking the event reasoning rule that the "220kV XX line XX circuit breaker A jumps to A and coincides successfully" as an example, as shown in figure 5, in the standard interval, selecting a first set of protected "XX line protection A phase tripping outlet=1", "XX line protection outlet=1" standard signals, obtaining a 1 st stage logic node 1 by OR logic operation, selecting a second set of protected "XX line protection A phase tripping outlet=1", "XX line protection outlet=1" standard signals, and obtaining a 2 nd stage logic node 2 by OR logic operation; the 1 st level logic node 1 and the 2 nd level logic node 2 are subjected to AND logic operation to obtain a second level logic node 3;
selecting a standard signal of 'XX line protection reclosing action=1' of double protection, and obtaining a 3 rd-stage logic node 4 through OR logic operation; the standard signals of the 'XX switch A phase position=0' and the 'XX switch A phase position=1' of the breaker protection are selected to be logically defined as a 4 th stage logic node 5 in a 'sequential execution' mode; selecting a 'XX interval accident signal=1' and a 'total station accident total=1' standard signal of breaker protection, and logically defining the standard signals as a 5 th-stage logic node 6;
the second-level logic node 3, the 3 rd-level logic node 4, the 4 th-level logic node 5 and the 5 th-level logic node 6 are used for obtaining a logic node 7 through AND logic operation, and the logic node 7 is used as a data alarm node, namely an event reasoning rule of a standard interval.
The invention takes the standard signal of the substation equipment as input, uses the cascade combination of logical operators to describe the event reasoning rule of the substation in a visual mode, has the advantages of convenient use and easy understanding, and is beneficial to operation and maintenance personnel to summarize experience and refine complex event reasoning rules.
Furthermore, the input effective time of each stage of logic nodes is 20 seconds, and the input effective time can be adjusted according to actual needs. The accuracy and reliability of the event inference rule are ensured through the setting of the effective time.
Repeating the step 3, configuring a plurality of event reasoning rules at standard intervals of the 220kV line, wherein the plurality of event reasoning rules at each standard interval form a standard event reasoning rule list; the event reasoning rule list adopts a list structure of substation/voltage level/interval/event reasoning rules.
Taking 200kV urban and north change as an example, the 220kV wide-city south wire 262 interval of 220kV voltage class is automatically matched to the 220kV line standard interval type, the 220kV wide-city south wire 262 standard interval is created according to the step 3 to obtain an event reasoning rule list, and the event reasoning rule list is organized according to the list structure of transformer substation/voltage class/interval/event reasoning rule, as shown in fig. 6.
Specifically, because the standard interval name and the actual interval in the transformer substation adopt the same naming rule, information such as keywords, voltage levels and the like is extracted from the actual interval name, and the standard interval is automatically matched based on a semantic similarity method, so that mapping between the standard interval and the actual interval is realized.
Specifically, the sequence of occurrence of the standard signals in the event reasoning rule is used as a set sequence, and on the premise of ensuring that the standard intervals and the actual intervals are in one-to-one correspondence, omission is further avoided when the similarity is automatically calculated, and the original structure of the event reasoning rule is not changed in the instantiation process.
Specifically, based on a semantic similarity method, calculating the similarity of the device names between the names of the standard signal corresponding model and the device names in the actual interval, and based on a maximum similarity subsequence algorithm of the character strings, calculating the similarity of the signal names between the standard signal and the actual measurement signal of the device in the actual interval, wherein the actual measurement signal is preferably the actual measurement signal of the device in the actual interval corresponding to the maximum similarity of the device names. The device measured signal list is also constructed using the measured signals.
Preferably, the weight coefficients of the device name similarity and the signal name similarity are both 0.5.
Specifically, the actual measurement signals of the equipment in the actual interval of the transformer substation corresponding to the maximum comprehensive similarity are selected to replace standard signals, and the step 3 is repeated to obtain the instantiated event inference rule, so that the mapping matching of the event inference rule list of the standard interval and the instantiated event inference rule list of the actual interval of the transformer substation is completed.
In the embodiment of the invention, the instantiation operation of the event inference rule under the interval of '220 kV WANCANNEW wire 262' is carried out, and the method is as follows:
the interval of the 220kV Wancheng south line 262 comprises 25 primary devices, secondary devices and auxiliary devices such as 262 switches, 9 event reasoning rules such as the 220kVX line XX breaker three-phase tripping are required to be instantiated, and the event reasoning rules such as the 220kVX line XX breaker A tripping A closing and reclosing success are taken as an example, and standard signals comprise: the total station accident is total, the XXA phase switch position, the XX interval accident signal, the XX line protection reclosing actions of the first set of line protection and the second set of line protection, the XX line protection outlet, the XX line protection A phase tripping outlet and the XX line protection reclosing action. The method comprises the steps of searching a signal which is the best match of total station accident total in a total station range of 220kV urban and north transformer, recording a signal ID (1103000000001700191), searching a signal which is the best match of a first set of line protection reclosing actions of XX lines in an interval range of 220kV universal south line 262, and recording a signal ID (1103000000001712161). The actual measurement signals with the best matching standard signals are searched in sequence one by one, the signal IDs are recorded, and the instantiation of the event reasoning rule is completed, as shown in fig. 7.
Further, in step 4, the instantiated event inference rule is checked, and if the actual test signal is not matched, the actual test signal can be manually matched through global search, and if the actual test signal is matched correctly, the actual test signal is confirmed and marked as enabled.
The actual transformer substation model organizes and displays actual transformer substation data according to a tree-shaped list structure of transformer substations/voltage levels/intervals/devices/measuring points, and event reasoning rule lists of the transformer substations are organized according to a list structure of transformer substations/voltage levels/intervals/event reasoning rules in the embodiment of the invention, and the intervals correspond to each other one by one. In the process of rule instantiation, the instantiation of the event reasoning rule standard signal can be completed only by searching the device actually measured signal list at intervals, and the processing speed is improved.
In the engineering configuration stage, the invention automatically maps the input signals of the general event reasoning rule based on the actual transformer substation model to generate the transformer substation event warning reasoning rule instance file, and the validity of the reasoning rule can be verified in advance through the analog signals.
Specifically, the logic inference graph shows the actual measurement signals, the logic nodes and the connection relations among the logic nodes in the instantiated event inference rule.
Specifically, step 5 includes: serializing the instantiated event reasoning rule according to the binary code, and writing the ID of the actually measured signal, the name of the actually measured signal, the logic node, the input effective time and the output event information definition into the binary code. Thereby obtaining a binary file of the instantiated eventing reasoning rule of the machine-readable actual transformer substation.
Specifically, the online module loads a binary file of an event reasoning rule and receives all real-time alarm information generated by the system, and when the actual measurement signal of a certain event reasoning rule changes, event reasoning is carried out according to a logic reasoning diagram; the event reasoning process is to solve the logic nodes layer by layer and finally converge the logic nodes to one logic node to be used as an event reasoning result. In the process, each logic node calculates according to the hierarchical sequence and the logic operation, gradually transmits the result of the bottom logic node to the upper layer, finally obtains an event reasoning result, and realizes the event warning according to the result, and the method comprises the following steps:
1) When the actual measurement signal of a certain event reasoning rule changes, checking whether the output of a first-stage logic node is true or not through logic operation of the actual measurement signal, and if yes, checking whether the output of a last-stage logic node is true or not; if the output is true but there is no upper level logical node, i.e. the logical node is the highest level logical node, the alarm information is sent out according to the definition of the output event information.
The logic node is composed of a plurality of actual measurement signals and a logic operation, wherein the logic operation can be any one of AND, OR, NOT, X, selection and Y and sequence change.
Further, the logic node is composed of a plurality of logic nodes or a combination of a plurality of actual measurement signals and the logic nodes and a logic operation.
2) When the input of each stage of logic nodes becomes true, the change moment of the input signal is recorded, and when the input effective time is exceeded, the input signal fails, and alarm information is sent according to the definition of output event information.
Specifically, a binary file representing an instantiated eventing reasoning rule of an actual transformer substation is stored in an eventing reasoning rule file named as a transformer substation name, and submitted to a file service directory of an automation system, and an event reasoning data structure is created in a memory.
Specifically, the event inference service module periodically checks a file service directory, reads an event inference rule from a file when the event inference rule file of 'transformer station name. Eri' is newly built or updated, forms a logic inference graph in a software memory, and stores an ID of an actual measurement signal and a logic inference rule instance containing the actual measurement signal in a hash table form.
Specifically, the event inference service module also receives various alarm information from the automation system, extracts the ID of the measured signal triggering the alarm from the alarm information, and retrieves the logic inference rule instance associated with the ID in the hash table.
In the embodiment of the invention, the event display and verification module receives the event alarm information, displays the alarm information in the form of an event list, can call a logic reasoning diagram of the event, and renders a logic reasoning activation path in a special color to help operators to quickly confirm the correctness of the reasoning event.
The invention also provides an event alarm reasoning system based on the transformer substation model and rule instantiation, which comprises the following steps:
the system comprises a standardization module, a rule establishment module, a rule instantiation module and an reasoning and alarming module;
the standardized module is used for utilizing the substation data acquired by the centralized control station system as a standard signal of a substation model; determining the connection relation between the transformer substation models according to the transmission relation between the transformer substation data acquired by the centralized control station system, wherein the transformer substation models and the connection relation form a standard interval; the standard interval name and the actual interval in the transformer substation adopt the same naming rule;
further, the standardized module edits the standard interval in a graphical interactive manner.
The rule building module is used for obtaining a first-level logic node from standard signals of the transformer substation model through logic operation in a standard interval; taking a first-stage logic node as a starting point, and in the set effective input time, obtaining a last-stage logic node by the next-stage logic node through logic operation, and finally outputting 1 logic node as an event reasoning rule of the standard interval;
further, the rule building module edits an event reasoning rule of the standard interval in a graphical interaction mode.
The rule instantiation module is used for selecting standard intervals according to the actual interval names in the transformer substation; in the standard interval, calculating the device name similarity between the standard signal corresponding model and the device in the actual interval and the signal name similarity between the standard signal and the actual measurement signal of the device in the actual interval according to the set sequence, and taking the weighted sum of the device name similarity and the signal name similarity as the comprehensive similarity; updating standard signals in the event reasoning rule by using actual measurement signals of equipment in the actual interval of the transformer substation corresponding to the maximum comprehensive similarity to obtain an instantiated event reasoning rule;
further, the rule instantiation module performs instantiation of the association event reasoning rule according to actual substation conditions and actual intervals, and organizes the reasoning rule file according to the substation.
The reasoning and alarming module is used for displaying the instantiated event reasoning rule by using a logic reasoning diagram; and acquiring real-time alarm information of the centralized control station system, carrying out event reasoning according to the logic reasoning diagram, and sending out an event alarm.
Specifically, the reasoning and alarming module comprises an event reasoning service unit and an event display and verification unit.
The event reasoning service unit is used for reading the reasoning rule file according to the actual transformer substation, forming a logic reasoning graph data structure formed by an input object, a logic node object and a connection relation of the logic node object in a software memory, receiving various alarm information from the monitoring system, activating the reasoning logic node step by step according to the judgment condition, finally forming a reasoning result and sending out an event alarm;
the event display and verification unit organizes display results according to the event alarm and event associated alarm information, displays a logic reasoning diagram and a signal activation reasoning path in a graphical mode, and supports operators to confirm the correctness of event reasoning.
In the operation stage, by loading the event alarm reasoning rule instance file of the transformer substation, an event reasoning data structure formed by input signals, logic nodes and connection relations thereof is created in the memory, and various types of trivial alarm information of the received monitoring system are quickly arranged into an event alarm report.
The invention reduces the configuration difficulty of the complicated event reasoning rule in a visual mode, automatically verifies the event reasoning instantiation rule in advance by using the analog signal, and improves the efficiency of configuring and verifying the complicated event reasoning logic.
The present disclosure may be a system, method, and/or computer program product. The computer program product may include a computer readable storage medium having computer readable program instructions embodied thereon for causing a processor to implement aspects of the present disclosure.
The computer readable storage medium may be a tangible device that can hold and store instructions for use by an instruction execution device. The computer readable storage medium may be, for example, but not limited to, an electronic storage device, a magnetic storage device, an optical storage device, an electromagnetic storage device, a semiconductor storage device, or any suitable combination of the foregoing. More specific examples (a non-exhaustive list) of the computer-readable storage medium would include the following: portable computer disks, hard disks, random Access Memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), static Random Access Memory (SRAM), portable compact disk read-only memory (CD-ROM), digital Versatile Disks (DVD), memory sticks, floppy disks, mechanical coding devices, punch cards or in-groove structures such as punch cards or grooves having instructions stored thereon, and any suitable combination of the foregoing. Computer-readable storage media, as used herein, are not to be construed as transitory signals per se, such as radio waves or other freely propagating electromagnetic waves, electromagnetic waves propagating through waveguides or other transmission media (e.g., optical pulses through fiber optic cables), or electrical signals transmitted through wires.
The computer readable program instructions described herein may be downloaded from a computer readable storage medium to a respective computing/processing device or to an external computer or external storage device over a network, such as the internet, a local area network, a wide area network, and/or a wireless network. The network may include copper transmission cables, fiber optic transmissions, wireless transmissions, routers, firewalls, switches, gateway computers and/or edge servers. The network interface card or network interface in each computing/processing device receives computer readable program instructions from the network and forwards the computer readable program instructions for storage in a computer readable storage medium in the respective computing/processing device.
Computer program instructions for performing the operations of the present disclosure can be assembly instructions, instruction Set Architecture (ISA) instructions, machine-related instructions, microcode, firmware instructions, state setting data, or source or object code written in any combination of one or more programming languages, including an object oriented programming language such as Smalltalk, c++ or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The computer readable program instructions may be executed entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computer (for example, through the Internet using an Internet service provider). In some embodiments, aspects of the present disclosure are implemented by personalizing electronic circuitry, such as programmable logic circuitry, field Programmable Gate Arrays (FPGAs), or Programmable Logic Arrays (PLAs), with state information of computer readable program instructions, which can execute the computer readable program instructions.
Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that: modifications and equivalents may be made to the specific embodiments of the invention without departing from the spirit and scope of the invention, which is intended to be covered by the claims.
Claims (10)
1. The event alarm reasoning method based on the transformer substation model and the rule instantiation is characterized by comprising the following steps:
step 1, substation data acquired by a centralized control station system is used as a standard signal of a substation model;
step 2, determining connection relations among substation models according to transmission relations among substation data acquired by a centralized control station system, wherein the substation models and the connection relations form standard intervals; the standard interval name and the actual interval in the transformer substation adopt the same naming rule;
step 3, in the standard interval, standard signals of the transformer substation model are subjected to logic operation to obtain a first-stage logic node; taking a first-stage logic node as a starting point, and in the set effective input time, obtaining a last-stage logic node by the next-stage logic node through logic operation, and finally outputting 1 logic node as an event reasoning rule of the standard interval;
step 4, selecting a standard interval according to the name of the actual interval in the transformer substation; in the standard interval, calculating the device name similarity between the standard signal corresponding model and the device in the actual interval and the signal name similarity between the standard signal and the actual measurement signal of the device in the actual interval according to the set sequence, and taking the weighted sum of the device name similarity and the signal name similarity as the comprehensive similarity; updating standard signals in the event reasoning rule by using actual measurement signals of equipment in the actual interval of the transformer substation corresponding to the maximum comprehensive similarity to obtain an instantiated event reasoning rule;
step 5, displaying the instantiated event reasoning rule by using a logic reasoning diagram; and acquiring real-time alarm information of the centralized control station system, carrying out event reasoning according to the logic reasoning diagram, and sending out an event alarm.
2. The event alert inference method based on substation model and rule instantiation according to claim 1,
the standard signals are classified according to the operation data, the action information, the alarm information and the control command.
3. The event alert inference method based on substation model and rule instantiation according to claim 1,
repeating the step 3, and obtaining a plurality of event reasoning rules at each standard interval; forming a standard event reasoning rule list by utilizing a plurality of event reasoning rules corresponding to each standard interval;
the event reasoning rule list adopts a list structure of substation, voltage level, interval and event reasoning rules.
4. The event alert inference method based on substation model and rule instantiation according to claim 1,
the logical operation includes: and, or, not, X selects Y and the order varies.
5. The event alert inference method based on substation model and rule instantiation according to claim 1,
the input effective time of each stage of logic nodes is set to be 20 seconds.
6. The event alert inference method based on substation model and rule instantiation according to claim 1,
in step 4, extracting keywords and voltage levels from actual interval names in the transformer substation, and automatically matching to obtain standard intervals based on a semantic similarity method;
and calculating the similarity of the device names between the names of the models corresponding to the standard signals and the names of the devices in the actual interval based on a semantic similarity method, and calculating the similarity of the signal names between the standard signals and the actual measurement signals of the devices in the actual interval based on a maximum similarity subsequence algorithm of the character strings, wherein the actual measurement signals are preferably the actual measurement signals of the devices in the actual interval corresponding to the maximum similarity of the device names.
7. The event alert inference method based on substation model and rule instantiation according to claim 1,
in step 4, the sequence of the standard signals in the event reasoning rule is used as the setting sequence.
8. The event alert inference method based on substation model and rule instantiation according to claim 1,
the logic reasoning diagram shows the actual measurement signals, the logic nodes and the connection relation among the logic nodes in the instantiated event reasoning rule.
9. The event alert inference method based on substation models and rule instantiation according to claim 8,
in step 5, the instantiated event reasoning rule is encoded according to binary system to obtain a binary system file, wherein the binary system file comprises the ID of the actual measurement signal, the name of the actual measurement signal, a logic node, the effective input time and the definition of the output event information;
when the actual measurement signal of a certain event reasoning rule changes, checking whether the output of a first-stage logic node is true or not through logic operation of the actual measurement signal according to a logic reasoning diagram, if yes, checking whether the output of a last-stage logic node is true or not, otherwise, sending alarm information according to the definition of output event information; if the output is true but no upper-level logic node exists, namely the logic node is the highest-level logic node, alarm information is sent according to the definition of the output event information;
when the input of each stage of logic node becomes true, the change moment of the input signal is recorded, and when the input effective time is exceeded, the input signal is invalid, and alarm information is sent according to the definition of the output event information.
10. An event alert inference system based on substation models and rule instantiation for implementing the method of any one of claims 1 to 9, the system comprising:
the system comprises a standardization module, a rule establishment module, a rule instantiation module and an reasoning and alarming module;
the standardized module is used for utilizing the substation data acquired by the centralized control station system as a standard signal of a substation model; determining the connection relation between the transformer substation models according to the transmission relation between the transformer substation data acquired by the centralized control station system, wherein the transformer substation models and the connection relation form a standard interval; the standard interval name and the actual interval in the transformer substation adopt the same naming rule;
the rule building module is used for obtaining a first-level logic node from standard signals of the transformer substation model through logic operation in a standard interval; taking a first-stage logic node as a starting point, and in the set effective input time, obtaining a last-stage logic node by the next-stage logic node through logic operation, and finally outputting 1 logic node as an event reasoning rule of the standard interval;
the rule instantiation module is used for selecting standard intervals according to the actual interval names in the transformer substation; in the standard interval, calculating the device name similarity between the standard signal corresponding model and the device in the actual interval and the signal name similarity between the standard signal and the actual measurement signal of the device in the actual interval according to the set sequence, and taking the weighted sum of the device name similarity and the signal name similarity as the comprehensive similarity; updating standard signals in the event reasoning rule by using actual measurement signals of equipment in the actual interval of the transformer substation corresponding to the maximum comprehensive similarity to obtain an instantiated event reasoning rule;
the reasoning and alarming module is used for displaying the instantiated event reasoning rule by using a logic reasoning diagram; and acquiring real-time alarm information of the centralized control station system, carrying out event reasoning according to the logic reasoning diagram, and sending out an event alarm.
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