CN113469583A - Power grid accident plan recommendation method, system, equipment and storage medium - Google Patents
Power grid accident plan recommendation method, system, equipment and storage medium Download PDFInfo
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Abstract
The invention belongs to the technical field of electric power automation and discloses a power grid accident plan recommendation method, a system, equipment and a storage medium, wherein a plurality of similar plans are selected from a preset plan library according to power grid accident information by acquiring the power grid accident information; acquiring accident stations according to the power grid accident information, and acquiring all associated stations of the accident stations based on a preset power grid topology; acquiring actual operation data of the accident plant and each associated plant and plan operation data in each similar plan, and comparing the actual operation data with each plan operation data to obtain a comparison result of each similar plan; recommending each similar plan and the comparison result of each similar plan. The plan comparison efficiency is greatly improved, the power grid operation condition is fully considered, the comparison result is closer to the actual operation mode of the power grid, the plan matching accuracy is effectively improved, and the power grid decision-making assisting level is improved.
Description
Technical Field
The invention belongs to the technical field of electric power automation, and relates to a power grid accident plan recommendation method, system, equipment and storage medium.
Background
The power grid accident plan is an important mechanism for conducting grid accident treatment and guaranteeing power grid safety, and corresponding pre-control and accident response measures are compiled according to the actual operation conditions of the power grid aiming at high-risk operation conditions caused by system maintenance, mode change, climate sudden change, power conservation in special periods and the like. The traditional plan management is mainly managed by document filing, and once an accident occurs, scheduling operators need to manually search plan files, so that guidance can not be provided for the first time, and the accident is not easily and rapidly controlled. With the deep promotion of the national grid regulation cloud construction, the regulation cloud operation data platform collects seven types of operation data such as massive accidents, alarms, measurement and electric quantity, and is convenient for analyzing and mining the state and the characteristics of the power grid. With the electronization of the power grid accident plan, a unified E text format power grid accident plan library is gradually formed. Therefore, how to automatically make a predetermined plan recommendation for the real-time occurrence of the power grid accident and provide a quick auxiliary decision for the dispatcher accident handling becomes a main focus of attention in the research field.
At present, researches on the aspect of plan recommendation mainly relate to technologies such as distance algorithm, natural language analysis and artificial intelligence learning, and some automatic plan recommendation methods are formed based on the technologies. For example, patent application CN 107609788A discloses a method and system for automatically identifying and associating a grid fault signal, which mainly identifies a grid fault through an SOE signal, establishes a signal matching rule for each fault type, and extracts keywords from the grid fault to automatically associate with a fault plan. However, the method only utilizes the power grid fault signal to judge the accident, the matching rule is artificially set or only text matching is carried out, only the SOE signal is utilized, various types such as the accident, the threshold crossing, the displacement and the measurement are not comprehensively analyzed, only the plan matching is carried out from the angle of the fault type, and the recommendation result is not accurate and quick enough. Patent application CN 102968694 a discloses an intelligent matching method and system for power failure handling plans, which establishes a plan library based on the characteristic attributes of power failure events, and provides a retrieval strategy using the sum of the same characteristic weights as a similarity index by comparing the characteristic attributes of the power failure events and the plans in the plan library, so as to generate a correct and comprehensive accident handling scheme in an emergency state. However, the method only carries out the plan matching aiming at the power failure event in the power grid, and does not consider the power grid out-of-limit, alarm and other defect conditions. And all attributes of the power failure event are compared with all plans in the plan library one by one, and if the attributes or the weights are modified, the whole library comparison needs to be carried out again, so that the time consumption is long, and the requirement of fast retrieval and matching of real-time faults in a massive plan library cannot be met. The related weight and threshold are set manually, and large subjective factors exist, so that the finally screened plan has large influence of human factors.
In summary, most of the conventional power grid accident plan recommendation methods use a single-time and single-type signal of a power grid to perform accident judgment, a matching rule is manually formulated or only text matching is performed, various types of data such as accidents, threshold crossing, displacement and measurement are not comprehensively analyzed, and all attributes of a power grid event are compared with all plans and all attributes in a plan library one by one, so that the plan recommendation consumes a long time, the recommendation efficiency is low, and the matching between the recommended plan and the power grid accident is poor.
Disclosure of Invention
The invention aims to overcome the defects that the time consumption for recommending a plan is long, the recommending efficiency is low and the matching between the recommended plan and a power grid accident is poor in the prior art, and provides a power grid accident plan recommending method, a system, equipment and a storage medium.
In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose:
in a first aspect of the present invention, a method for recommending a grid accident plan includes the following steps:
acquiring power grid accident information, and selecting a plurality of similar plans from a preset plan library according to the power grid accident information;
acquiring accident stations according to the power grid accident information, and acquiring all associated stations of the accident stations based on a preset power grid topology;
acquiring actual operation data of the accident plant and each associated plant and plan operation data in each similar plan, and comparing the actual operation data with each plan operation data to obtain a comparison result of each similar plan;
recommending each similar plan and the comparison result of each similar plan.
The power grid accident plan recommendation method is further improved as follows:
the specific method for acquiring the power grid accident information comprises the following steps: acquiring fault data, switch displacement data, out-of-limit data and measurement data of a power grid; and taking the acquisition time of the current fault data as a starting point, and combining the switch displacement data after the first preset time, the out-of-limit data before and after the second preset time, the measurement data of the fault equipment corresponding to the fault data before the third preset time and the fault data before and after the fourth preset time to obtain the power grid accident information.
The specific method for selecting a plurality of similar plans from a preset plan library according to the power grid accident information comprises the following steps: acquiring an accident station, an accident type, accident equipment and an accident voltage grade according to the power grid accident information; acquiring all voltage levels of accident stations, traversing all stations in a power grid, acquiring stations with all voltage levels identical to the accident stations, and acquiring a plurality of target stations; and selecting a plan taking the target plant station as a plan accident plant station from a preset plan library to obtain a plurality of target plans, and selecting the target plans with plan accident types, plan accident equipment and plan accident voltage grades respectively identical to the accident types, the accident equipment and the accident voltage grades from the plurality of target plans to obtain a plurality of similar plans.
The specific method for obtaining each associated station of the accident station based on the preset power grid topology comprises the following steps: acquiring all voltage levels of the accident station; and searching the plant station which is connected with the accident plant station and is the nearest layer by voltage grades based on a preset power grid topology by taking the accident plant station as a starting point to obtain each associated plant station of the accident plant station.
Further comprising: and when the types of the associated stations are T-connection stations, switching stations and switching stations, replacing the current associated stations with the stations connected with the current associated stations.
Further comprising: on the basis of a preset power grid topology, searching stations connected with accident stations through lines by taking the accident stations as a starting point in a voltage-level-by-voltage-level manner layer by layer, stopping searching when the accident stations are searched, and adding all searched stations to each associated station of the accident stations; or stopping searching when the number of layers is preset, and reserving the current associated stations of the accident station.
The actual operation data comprises actual operation data of the power grid accident at the previous moment and actual operation data of the power grid accident at the next moment; the plan operation data comprises plan operation data at the previous moment and plan operation data at the next moment of the current moment of the plan power grid accident.
The actual operation data of the power grid accident at the moment before the current moment and the plan operation data of the plan power grid accident at the moment before the current moment both comprise: one or more of the number of intervals, the running state of each interval and the measurement data of each interval; the actual operation data of the power grid accident at the moment after the current moment and the plan operation data of the plan power grid accident at the moment after the current moment both comprise: one or more of the number of affected stations, the number of affected intervals, the running condition of the spare power automatic switching device and the measurement data of each interval.
The specific method for recommending each similar plan and the comparison result of each similar plan is as follows: obtaining the scores of the similar plans according to the comparison results of the similar plans and a preset scoring rule; and recommending the similar plans and the comparison results of the similar plans according to the sequence of scores from large to small.
In a second aspect of the present invention, a power grid accident plan recommendation system includes:
the similar plan determining module is used for acquiring power grid accident information and selecting a plurality of similar plans from a preset plan library according to the power grid accident information;
the associated station determining module is used for obtaining accident stations according to the power grid accident information and obtaining each associated station of the accident stations based on a preset power grid topology;
the comparison module is used for acquiring actual operation data of the accident plant station and each associated plant station and plan operation data in each similar plan, and comparing the actual operation data with each plan operation data to obtain a comparison result of each similar plan;
and the recommending module recommends each similar plan and the comparison result of each similar plan.
In a third aspect of the present invention, a computer device includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor implements the steps of the grid accident plan recommendation method when executing the computer program.
In a fourth aspect of the present invention, a computer-readable storage medium stores a computer program, and the computer program, when executed by a processor, implements the steps of the grid accident plan recommendation method.
Compared with the prior art, the invention has the following beneficial effects:
according to the power grid accident plan recommendation method, firstly, a plurality of similar plans are selected from a preset plan library according to power grid accident information, the number of plans to be compared is reduced, secondly, each associated station of an accident station is obtained based on preset power grid topology, actual operation data are obtained by taking the number as a comparison range, then the actual operation data are compared with the similar plans, the comparison number and the dimension of the plans are greatly reduced, the plan comparison efficiency is greatly improved, the power grid operation condition is fully considered, the comparison result is closer to the actual operation mode of a power grid, the plan matching accuracy is effectively improved, and the power grid auxiliary decision level is improved.
Drawings
FIG. 1 is a flow chart of a power grid accident plan recommendation method according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a time window of grid fault information according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of ring network search according to an embodiment of the present invention;
FIG. 4 is a schematic diagram illustrating a comparative process of similar schemes according to an embodiment of the present invention;
fig. 5 is a structural block diagram of a power grid accident plan recommendation system according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The invention is described in further detail below with reference to the accompanying drawings:
referring to fig. 1, in an embodiment of the present invention, aiming at the problems that massive operation data of a power grid lacks comprehensive analysis of multiple time scales and multiple dimensions, the integral sensing capability of a dispatcher on power grid accident information and power grid operation conditions is insufficient, and after a power grid accident occurs, the dispatcher still needs to manually browse through a plan or the existing plan recommendation result is single and not fast and accurate enough, a power grid accident plan recommendation method is provided to achieve accurate control of power grid accident information, the plan recommendation result is faster and closer to the actual power grid operation mode, the accident handling efficiency of a regulatory operator can be effectively improved, the accident risk is reduced, and the safety and stability of the power grid are improved.
In this embodiment, the power grid accident plan recommendation method includes the following steps: s1: acquiring power grid accident information, and selecting a plurality of similar plans from a preset plan library according to the power grid accident information. S2: and obtaining accident stations according to the power grid accident information, and obtaining all relevant stations of the accident stations based on a preset power grid topology. S3: and acquiring actual operation data of the accident plant station and each associated plant station and plan operation data in each similar plan, and comparing the actual operation data with each plan operation data to obtain a comparison result of each similar plan. S4: recommending each similar plan and the comparison result of each similar plan.
According to the power grid accident plan recommendation method, firstly, a plurality of similar plans are selected from a preset plan library according to power grid accident information, the number of plans to be compared is reduced, secondly, each associated station of an accident station is obtained based on preset power grid topology, actual operation data are obtained by taking the number as a comparison range, then the actual operation data are compared with the similar plans, the comparison number and dimensionality of the plans are greatly reduced, the plan comparison efficiency is greatly improved, the power grid operation condition is fully considered, the recommended plans are closer to the actual operation mode of a power grid, the plan matching accuracy is effectively improved, and the power grid auxiliary decision level is improved.
In step S1, the specific method for acquiring the grid accident information includes: acquiring fault data, switch displacement data, out-of-limit data and measurement data of a power grid; and taking the acquisition time of the current fault data as a starting point, and combining the switch displacement data after the first preset time, the out-of-limit data before and after the second preset time, the measurement data of the fault equipment corresponding to the fault data before the third preset time and the fault data before and after the fourth preset time to obtain the power grid accident information.
Specifically, a large amount of operation data can be generated during operation of the power grid, and the operation data of the power grid can be read and monitored in a rolling mode through the cloud operation data regulation and control platform. Generally, the operation data of the power grid includes fault data, alarm data, measurement data, and the like. The fault data is divided into abnormal data, defect data and the like, the alarm data is divided into switch displacement data, SOE (event sequence record) data, out-of-limit data and the like, and the measurement data refers to measurement information data of each device, such as active data, reactive data, current data, voltage data and the like.
Meanwhile, considering that the power grid is continuously operated, it is not accurate enough to describe the power grid accident only by using the power grid operation data at the current moment, and on this basis, in the embodiment, the fault data is used as an analysis starting point, and multi-dimensional power grid accident information considering a time window is formed, so that accurate power grid accident plan recommendation is realized. Of course, it is also possible to describe the grid fault directly using the grid operating data at the present time, but the described grid fault is not accurate enough.
Referring to fig. 2, on the basis of rolling reading and monitoring of fault data, switch displacement data, out-of-limit data and measurement data of a power grid, taking the acquisition time of the current fault data as a starting point, firstly, comprehensively considering the fault data and the switch displacement data after a first preset time Δ t 1. Specifically, the fault data is taken as a starting point, switch displacement information is extracted from the switch displacement data after the first preset time delta t1 of the fault data, when the fault information is that the switch is disconnected but the switch is overlapped and the overlapping is successful after the first preset time delta t1, it is judged that the power grid accident does not occur, the power grid accident does not occur is recorded in the power grid accident information, and otherwise, the power grid accident and the fault information of the power grid accident are recorded.
Secondly, comprehensively considering fault data and out-of-limit data before and after a second preset time delta t2, extracting out-of-limit information from the out-of-limit data before and after the second preset time delta t2, if the fault data has other equipment out-of-limit information before and after the second preset time delta t2, bringing the fault information and the out-of-limit information into the power grid accident information together, wherein the fault information is ' 220kV white one-line trip ', the expanded accident information is ' 220kV white one-line trip ', and the 220kV white two-line out-of-limit is 1 '.
And thirdly, comprehensively considering the fault data and the measurement data of the fault equipment corresponding to the fault data before the third preset time delta t3, and incorporating the measurement information of the fault equipment in the third preset time delta t3 before the fault data occurs into the grid accident information, wherein if the fault information is 'tripping of #1 unit', the expanded grid accident information is 'tripping of #1 unit, and the throwing power is 300 MW'.
Finally, fault data and fault data before and after the fourth preset time delta T4 are comprehensively considered, if other fault data exist within the fourth preset time delta T4 before and after the fault data appear, the fault data are jointly included in the grid accident information, if the fault information is ' Cao zhang sub-station #2T main transformer differential protection tripping ', the expanded grid accident information is ' Cao zhang sub-station #2T main transformer differential protection tripping ', and after 2 seconds, the Cao zhang sub-station #1T main transformer differential protection tripping '.
Through the steps, the multi-dimensional power grid accident information considering the time window is formed, the obtained power grid accident information is greatly enriched in content compared with the existing mode, and the description of the power grid accident is more accurate, so that the plans in the plan library are screened based on the power grid accident information, and the accuracy of the plans can be effectively improved.
In this embodiment, in step S1, the specific method for selecting a plurality of similar plans from a preset plan library according to the grid accident information includes: acquiring an accident station, an accident type, accident equipment and an accident voltage grade according to the power grid accident information; acquiring all voltage levels of accident stations, traversing all stations in a power grid, acquiring stations with all voltage levels identical to the accident stations, and acquiring a plurality of target stations; and selecting a plan taking the target plant station as a plan accident plant station from a preset plan library to obtain a plurality of target plans, selecting a plan accident type, plan accident equipment and a target plan with a plan accident voltage grade which is the same as the accident type, the accident equipment and the accident voltage grade from the plurality of target plans to obtain a plurality of similar plans to form a similar plan set.
Specifically, in order to reduce the calculation amount of the subsequent plan recommendation evaluation process and improve the plan matching speed, each plan in a preset plan library is preliminarily screened according to the power grid accident information. The plan library is a database formed by various plans which are continuously accumulated, and generally, each plan includes contents such as an expected accident of the power grid, an initial operation mode before the accident of the power grid, an operation mode after the accident of the power grid, accident handling steps and the like.
In this embodiment, the preliminary screening specifically includes: firstly, acquiring the highest voltage level A and all voltage levels of an accident station; traversing all stations with the highest voltage class A and the same number and types of the voltage classes as accident stations as target stations, wherein the voltage type specifically refers to the voltage magnitude, for example, station 1 comprises three voltage classes of 220kV/110kV/35kV, the number of the voltage classes is 3, and the type is 220kV/11kV/35 kV. Then, the target plants are selected from the plan library as the plans of the plan accident plant to obtain a plurality of target plans. And then screening all target plans with the same plan accident type, plan accident equipment and plan accident voltage grade as the accident type, the accident equipment and the accident voltage grade respectively to form a similar plan set.
In the embodiment, considering that operation mode comparison is performed on all stations and equipment of a power grid, the calculation amount is large, the consumed time is long, and the problem of huge time consumption caused by one-to-one comparison of all attributes of a power grid accident and all attributes of a plan is also solved, so that before plan recommendation, a power grid operation mode comparison range is determined to reduce comparison calculation time and improve plan recommendation efficiency, namely, each associated station of the accident station is obtained based on a preset power grid topology, and the accident station and each associated station are used as the comparison range.
Generally, after a power grid accident occurs, the closer to a fault point, the greater the influence of the operation mode on power flow transfer after the fault. Therefore, in step S2, the specific method for obtaining each associated station of the accident station based on the preset power grid topology includes: acquiring all voltage levels of the accident station; and searching the plant station which is connected with the accident plant station and is the nearest layer by voltage grades based on a preset power grid topology by taking the accident plant station as a starting point to obtain each associated plant station of the accident plant station. A layer here refers to the collection of all plant sites that have a direct electrical connection with the current plant site.
Specifically, firstly, according to the power grid accident information, a plant station to which the fault point belongs, namely an accident plant station, is determined. And then expanding a layer of stations on the voltage level side by voltage level side based on the power grid topology of the power grid by taking the accident station as a starting point according to the line topology connection relation, namely searching the station which is connected with the accident station and is the nearest layer of stations on the voltage level by voltage level, and taking the stations as the associated stations of the accident station. In the search, a topology search method based on a depth-first algorithm is generally adopted.
The determined associated plant station set is used for performing the subsequent operation mode comparison of each plant station, but among all plant stations of the power grid, there are some types of plant stations, such as a T-junction station, a switch station and an on-off station, which are not conventional plant stations and only have connection relations, so preferably, when the types of the associated plant stations are the T-junction station, the switch station and the on-off station, the plant station connected with the currently associated plant station is adopted to replace the currently associated plant station, that is, when the associated plant stations are the T-junction station, the switch station and the on-off station, a layer of plant stations are continuously expanded downwards according to the line topology connection relation and are used as the associated plant stations.
Meanwhile, considering that the electrical connection among the stations in the power ring network is tight, the power flow trend of the power network is greatly influenced by the disconnection of the ring network, and therefore the running states of the stations in the ring network need to be brought into a comparison range.
Therefore, preferably, referring to fig. 3, according to the power grid accident information, it is determined that the plant station to which the fault point 1 belongs is an accident plant station, based on a preset power grid topology, the plant stations connected to the accident plant station through the bus are searched layer by layer with the accident plant station as a starting point, when the accident plant station is searched, the search is stopped, and at this time, it is indicated that the accident plant station is located in the looped network 2, and therefore, all the plant stations in the looped network 2 need to be added to all the associated plant stations, that is, all the searched plant stations need to be added to all the associated plant stations of the accident plant station. Meanwhile, in order to avoid continuous searching, a preset number of layers are set, and when the preset number of layers are searched, the searching is stopped, so that the accident station is not in the ring network 2, and therefore, only the current associated stations of the accident station need to be reserved.
After the comparison range is determined, in this embodiment, the operation mode is used as a comparison object, and the actual operation data is compared with the operation data of each similar plan by obtaining the actual operation data of the accident plant station and each associated plant station and the operation data of each similar plan, so as to obtain the comparison result of each similar plan.
In this embodiment, referring to fig. 4, in step S3, in consideration of the characteristic of continuous operation of the power grid, a method of comparing a pre-accident operation mode and a post-accident operation mode of the power grid is adopted to improve the accuracy of matching the plan with the power grid accident. The actual operation data comprises actual operation data of the power grid accident at the previous moment and actual operation data of the power grid accident at the next moment; the plan operation data comprises plan operation data at the previous moment and plan operation data at the next moment of the current moment of the plan power grid accident. The time refers to the collection time of the power grid operation data.
Specifically, the actual operation data of the power grid accident at the moment before the current moment is obtained by intercepting the power grid operation section data of the power grid accident at the moment before the current moment; and acquiring the actual operation data of the power grid at the moment after the current moment of the power grid accident by intercepting the operation section data of the power grid at the moment after the current moment of the power grid accident.
However, the data volume of the power grid operation section data is large, and the time consumption is large when all the power grid operation section data are compared. Therefore, in the embodiment, part of the index data is selected to represent the power grid operation mode, so that the comparison quantity and dimensionality of the plan are greatly reduced, and the comparison efficiency of the plan is improved. Specifically, first, an accident station and each station related to the accident station are subjected to interval judgment, generally, an interval judgment is performed by using a topology search method, various intervals such as a connection chain of a bus and a switch disconnecting link, a connection chain of an alternating-current line and the switch disconnecting link, a connection chain of a transformer and the switch disconnecting link, and a connection chain of a generator and the switch disconnecting link are formed, and then the intervals are taken as specific objects during comparison.
Preferably, the index data of the power grid accident at the moment before the current moment and the index data of the pre-planned power grid accident at the moment before the current moment include the number of intervals, the operating state of each interval and the measurement data of each interval. When the comparison is carried out, the comparison is carried out with each similar plan in the similar plan set in turn. Wherein, the comparison of the interval quantity is mainly to judge whether a new operation or return interval or equipment exists; comparing the running states of all intervals, specifically judging whether the running states change among 4 running states, hot standby states, cold standby states and overhaul states for the same interval; comparing the measurement data of each interval, and judging whether the active measurement data, the reactive measurement data, the current measurement data and the voltage measurement data of the equipment are changed or not aiming at the equipment in the same interval; and recording the change conditions of all the comparisons to obtain comparison results. The same interval refers to the corresponding interval between the accident station and each associated station and the plan accident station and each plan associated station.
Preferably, the index data at the moment after the current moment of the power grid accident and the moment after the current moment of the scheduled power grid accident include the number of affected stations, the number of affected intervals, the operation condition of the spare power automatic switching device and the measurement data of each interval. When the comparison is carried out, the comparison is carried out with each similar plan in the similar plan set in turn. The comparison of the number of affected stations is mainly to judge whether the power grid accident is consistent with the station affected by the plan power grid accident; the comparison of the number of the affected intervals mainly judges whether the intervals affected by the power grid accident and the pre-planned power grid accident are consistent; the comparison of the running conditions of the spare power automatic switching device mainly judges whether the running conditions and the action conditions of the spare power automatic switching device are consistent or not; the comparison of the measurement data of each interval mainly aims at the equipment in the same interval to judge whether the measurement data of the equipment, such as active power, reactive power, current and voltage, are changed or not; and recording the change conditions of all the comparisons to obtain comparison results.
After the comparison result of each similar plan is obtained, each similar plan and the comparison result of each similar plan can be directly recommended, an evaluation report can be generated for each similar plan according to the comparison result of each similar plan, and then the evaluation report of each similar plan and each similar plan are pushed together for a user to select the similar plans according to the evaluation report.
Preferably, when recommending each similar plan and the comparison result of each similar plan, the score of each similar plan can be obtained according to the preset scoring rule and the comparison result of each similar plan; then recommending the similar plans and the comparison results of the similar plans according to the order of the grades from large to small. The scoring rules are set by scheduling operators according to the current power grid state and the power-protection emphasis, so that the influence of human factors can be further reduced, the specific ability of a user is not limited, and the adaptability is improved.
The following are embodiments of the apparatus of the present invention that may be used to perform embodiments of the method of the present invention. For details of non-careless mistakes in the embodiment of the apparatus, please refer to the embodiment of the method of the present invention.
Referring to fig. 5, in a further embodiment of the present invention, a power grid accident plan recommendation system is provided, which can be used for implementing the power grid accident plan recommendation method described above, and specifically, the power grid accident plan recommendation system includes a similar plan determination module, an associated plant station determination module, a comparison module, and a recommendation module.
The similar plan determining module is used for acquiring power grid accident information and selecting a plurality of similar plans from a preset plan library according to the power grid accident information; the associated station determining module is used for obtaining accident stations according to the power grid accident information and obtaining each associated station of the accident stations based on a preset power grid topology; the comparison module is used for acquiring actual operation data of the accident plant station and each associated plant station and plan operation data in each similar plan, and comparing the actual operation data with each plan operation data to obtain a comparison result of each similar plan; the recommending module is used for recommending the similar plans and the comparison results of the similar plans.
Specifically, the similar plan determining module comprises a data acquiring module, a data analyzing module, a data processing module, a target station acquiring module and a similar plan acquiring module. The data acquisition module is used for acquiring fault data, switch displacement data, out-of-limit data and measurement data of a power grid. The data analysis module is used for obtaining the power grid accident information by taking the acquisition time of the current fault data as a starting point and combining the switch displacement data after the first preset time, the out-of-limit data before and after the second preset time, the measurement data of the fault equipment corresponding to the fault data before the third preset time and the fault data before and after the fourth preset time. The data processing module is used for obtaining an accident station, an accident type, accident equipment and an accident voltage grade according to the power grid accident information; the target station acquisition module is used for acquiring all voltage levels of the accident station, traversing all stations in the power grid, acquiring stations with all voltage levels identical to the accident station, and acquiring a plurality of target stations; the similar plan acquisition module is used for selecting a plan taking a target plant station as a plan accident plant station from a preset plan library to obtain a plurality of target plans, and selecting a target plan with a plan accident type, a plan accident device and a plan accident voltage grade which are respectively the same as the accident type, the accident device and the accident voltage grade from the plurality of target plans to obtain a plurality of similar plans.
The associated station determining module comprises an accident station determining module, a voltage grade acquiring module, an associated station determining module, a first associated station updating module and a first associated station updating module. The accident station determining module is used for obtaining an accident station according to the power grid accident information. The voltage grade acquisition module is used for acquiring all voltage grades of the accident station. And the associated station determining module is used for searching the station which is connected with the accident station and is at the nearest layer by voltage level based on the preset power grid topology by taking the accident station as a starting point to obtain each associated station of the accident station. And the first associated station updating module is used for replacing the current associated station with the station connected with the current associated station when the types of the associated stations are T-junction station, switching station and switching station. The second associated plant station updating module is used for searching plant stations connected with the accident plant station through the bus layer by taking the accident plant station as a starting point according to a preset power grid topology, stopping searching when the accident plant station is searched, and adding all searched plant stations to each associated plant station of the accident plant station; or stopping searching when the number of layers is preset, and reserving the current associated stations of the accident station.
The recommendation module comprises a grading module and a sequence pushing module, the grading module is used for obtaining grades of the similar plans according to comparison results of the similar plans through a preset grading rule, and the sequence pushing module is used for recommending the similar plans and the comparison results of the similar plans according to a sequence of grading from large to small.
In yet another embodiment of the present invention, a computer device is provided that includes a processor and a memory for storing a computer program comprising program instructions, the processor for executing the program instructions stored by the computer storage medium. The Processor may be a Central Processing Unit (CPU), or may be other general-purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field-Programmable gate array (FPGA) or other Programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, etc., which is a computing core and a control core of the terminal, and is specifically adapted to load and execute one or more instructions in a computer storage medium to implement a corresponding method flow or a corresponding function; the processor provided by the embodiment of the invention can be used for the operation of the power grid accident plan recommendation method.
In yet another embodiment of the present invention, the present invention further provides a storage medium, specifically a computer-readable storage medium (Memory), which is a Memory device in a computer device and is used for storing programs and data. It is understood that the computer readable storage medium herein can include both built-in storage media in the computer device and, of course, extended storage media supported by the computer device. The computer-readable storage medium provides a storage space storing an operating system of the terminal. Also, one or more instructions, which may be one or more computer programs (including program code), are stored in the memory space and are adapted to be loaded and executed by the processor. It should be noted that the computer-readable storage medium may be a high-speed RAM memory, or may be a non-volatile memory (non-volatile memory), such as at least one disk memory. One or more instructions stored in the computer-readable storage medium may be loaded and executed by the processor to implement the corresponding steps of the grid accident scenario recommendation method in the above embodiments.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention 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 present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams 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.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.
Claims (12)
1. A power grid accident plan recommendation method is characterized by comprising the following steps:
acquiring power grid accident information, and selecting a plurality of similar plans from a preset plan library according to the power grid accident information;
acquiring accident stations according to the power grid accident information, and acquiring all associated stations of the accident stations based on a preset power grid topology;
acquiring actual operation data of the accident plant and each associated plant and plan operation data in each similar plan, and comparing the actual operation data with each plan operation data to obtain a comparison result of each similar plan;
recommending each similar plan and the comparison result of each similar plan.
2. The grid accident scenario recommendation method according to claim 1, wherein the specific method for obtaining grid accident information is as follows:
acquiring fault data, switch displacement data, out-of-limit data and measurement data of a power grid;
and taking the acquisition time of the current fault data as a starting point, and combining the switch displacement data after the first preset time, the out-of-limit data before and after the second preset time, the measurement data of the fault equipment corresponding to the fault data before the third preset time and the fault data before and after the fourth preset time to obtain the power grid accident information.
3. The grid accident plan recommendation method according to claim 1, wherein the specific method for selecting a plurality of similar plans from a preset plan library according to the grid accident information is as follows:
acquiring an accident station, an accident type, accident equipment and an accident voltage grade according to the power grid accident information;
acquiring all voltage levels of accident stations, traversing all stations in a power grid, acquiring stations with all voltage levels identical to the accident stations, and acquiring a plurality of target stations;
and selecting a plan taking the target plant station as a plan accident plant station from a preset plan library to obtain a plurality of target plans, and selecting the target plans with plan accident types, plan accident equipment and plan accident voltage grades respectively identical to the accident types, the accident equipment and the accident voltage grades from the plurality of target plans to obtain a plurality of similar plans.
4. The grid accident scenario recommendation method according to claim 1, wherein the specific method for obtaining each associated station of the accident stations based on the preset grid topology is as follows:
acquiring all voltage levels of the accident station;
and searching the plant station which is connected with the accident plant station and is the nearest layer by voltage grades based on a preset power grid topology by taking the accident plant station as a starting point to obtain each associated plant station of the accident plant station.
5. The grid accident plan recommendation method according to claim 4, further comprising:
and when the types of the associated stations are T-connection stations, switching stations and switching stations, replacing the current associated stations with the stations connected with the current associated stations.
6. The grid accident plan recommendation method according to claim 4, further comprising:
on the basis of a preset power grid topology, searching stations connected with accident stations through lines by taking the accident stations as a starting point in a voltage-level-by-voltage-level manner layer by layer, stopping searching when the accident stations are searched, and adding all searched stations to each associated station of the accident stations; or stopping searching when the number of layers is preset, and reserving the current associated stations of the accident station.
7. The grid accident scenario recommendation method according to claim 1, wherein the actual operation data includes actual operation data at a previous time and actual operation data at a subsequent time of the grid accident; the plan operation data comprises plan operation data at the previous moment and plan operation data at the next moment of the current moment of the plan power grid accident.
8. The grid accident scenario recommendation method according to claim 7, wherein the actual operation data at a time before the current time of the grid accident and the scenario operation data at a time before the current time of the scenario grid accident each include: one or more of the number of intervals, the running state of each interval and the measurement data of each interval; the actual operation data of the power grid accident at the moment after the current moment and the plan operation data of the plan power grid accident at the moment after the current moment both comprise: one or more of the number of affected stations, the number of affected intervals, the running condition of the spare power automatic switching device and the measurement data of each interval.
9. The grid accident plan recommendation method according to claim 1, wherein the specific method for recommending each similar plan and the comparison result of each similar plan is as follows:
obtaining the scores of the similar plans according to the comparison results of the similar plans and a preset scoring rule;
and recommending the similar plans and the comparison results of the similar plans according to the sequence of scores from large to small.
10. A grid accident plan recommendation system is characterized by comprising:
the similar plan determining module is used for acquiring power grid accident information and selecting a plurality of similar plans from a preset plan library according to the power grid accident information;
the associated station determining module is used for obtaining accident stations according to the power grid accident information and obtaining each associated station of the accident stations based on a preset power grid topology;
the comparison module is used for acquiring actual operation data of the accident plant station and each associated plant station and plan operation data in each similar plan, and comparing the actual operation data with each plan operation data to obtain a comparison result of each similar plan;
and the recommending module is used for recommending the similar plans and the comparison results of the similar plans.
11. A computer arrangement comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor, when executing the computer program, carries out the steps of the grid incident pre-plan recommendation method according to any one of claims 1 to 9.
12. A computer-readable storage medium, in which a computer program is stored, which, when being executed by a processor, carries out the steps of the grid incident pre-plan recommendation method according to any one of claims 1 to 9.
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