CN113095952A - Power grid splitting early warning method and system considering real-time and N-X forecast information - Google Patents
Power grid splitting early warning method and system considering real-time and N-X forecast information Download PDFInfo
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Abstract
The invention discloses a power grid splitting early warning method and a power grid splitting early warning system considering real-time and N-X expected information, wherein the power grid splitting early warning method comprises the steps of monitoring power grid fault information in real time and judging whether a splitting behavior occurs to a power grid according to the power grid fault information; and based on a preset N-X fault set in the current power grid model, performing load flow calculation after disconnection by using a direct current load flow model, judging whether the power grid is disconnected according to a calculation result, and determining disconnection for disconnecting the power grid. The power grid splitting online early warning system can perform analysis and diagnosis from two dimensions of real-time tripping splitting warning in a power grid ground state mode and N-X expected fault early warning in an expected mode.
Description
Technical Field
The invention belongs to the technical field of intelligent analysis and control of electric power systems, and particularly relates to a power grid splitting early warning method and system considering real-time and N-X expected information.
Background
In recent years, accidents of each power grid frequently occur, along with continuous construction of the scale of the power grid, the connection between power grids of each area is more and more tight, the power load is increased, the influence of sudden accidents of a local power grid is possibly enlarged, large-scale power failure is caused, huge economic loss and severe social influence are brought, active and reactive power support is often lost in a power grid splitting area, large power shortage exists in the area, the frequency and voltage are deteriorated and even collapse is caused, and the power supply reliability of a large area is seriously influenced. Because a grid splitting accident often causes a part of the grid to have insufficient power and another part of the grid to have higher frequency or voltage, larger fluctuation of the grid frequency and voltage is caused, and if the fault is not processed in time, the accident is possibly expanded, the influence of loss load or the normal operation of a generator is influenced, and even a small system is broken down.
When the power grid is in an extreme mode of splitting, in order to ensure that a dispatcher can obtain relevant information at the first time so as to quickly and effectively carry out power grid accident handling, an independent power grid splitting online early warning system is urgently required to be developed on the basis of the current D5000 system, the current power grid state is analyzed and diagnosed, a power grid splitting result and primary equipment causing network splitting are given, and the power grid splitting online early warning system is displayed through a comprehensive visual interface of the D5000 system.
At present, a dispatching control center in a region and above is comprehensively popularized and built with an intelligent power grid dispatching control system (D5000 system), real-time online diagnosis and alarming of equipment faults are realized through a comprehensive intelligent alarming function, and dispatching operation personnel are assisted to quickly judge and handle the faults, but the dispatching control center only realizes the positioning of fault equipment on the whole and does not analyze whether the faults cause the splitting behavior of a power grid; the static safety analysis basic function realizes the statistics of out-of-limit conditions caused by expected faults, but the detailed analysis and effective display of whether the power grid is disconnected or not caused by the expected faults are lacked.
Disclosure of Invention
The invention provides a power grid splitting early warning method and system considering real-time and N-X expected information, aiming at the technical problems that whether the splitting behavior of a power grid is caused by a fault is not analyzed and whether the detailed analysis of the splitting behavior of the power grid caused by an expected fault is lacked at present.
The invention adopts the following technical scheme.
On one hand, the invention provides a power grid splitting early warning method considering real-time and N-X forecast information, which comprises the following steps: performing disconnection early warning in a real-time mode and disconnection early warning of an expected method; wherein the real-time mode splitting early warning comprises: monitoring power grid fault information in real time, and judging whether a power grid is in a splitting behavior or not according to the power grid fault information; the anticipatory method disconnection warning comprises the following steps: and based on a preset N-X fault set in the current power grid model, performing load flow calculation after the power grid is switched on and switched off by using a direct current load flow model, and judging whether the power grid is in a splitting behavior according to a calculation result.
Further, the method further comprises the steps of positioning the position of the newly added electric island when the power grid is judged to be in the splitting action, and counting the information of the equipment in the newly added electric island after the splitting action.
Further, the real-time disconnection early warning specifically comprises: the N-X real-time monitoring power grid fault information and judging whether the power grid has a splitting behavior according to the power grid fault information comprise the following steps; monitoring newly-added fault equipment of the power grid in real time to obtain fault information, analyzing based on the fault information to obtain the state of a breaker of the power grid, and performing topology analysis on the state of the power grid; determining electric island information before and after a power grid fault according to the state of the power grid breaker and a topological analysis result;
comparing the number of the electric islands before and after the power grid fault, if the number of the electric islands is increased, a new balancing machine is generated at the same time to judge that the power grid is disconnected, and determining fault equipment according to the fault which causes the power grid disconnection.
Further, after determining that the power grid is disconnected by using an anticipatory method disconnection early warning, determining a fault which causes the power grid to be disconnected further comprises the following steps: determining an impedance matrix X' when adding a line k with the impedance Xk, wherein the expression is as follows:
wherein X is a node impedance short matrix of the original power transmission system network,
the impedance matrix X' is simplified to the following expression:
wherein
When line k is opened to disconnect the grid, betakInfinity, the device causing the grid disconnect at this time is line k.
Further, the early warning method further comprises the following steps: the devices that caused the disassociation are displayed and the device information within the newly added electrical island is displayed.
Further, the early warning method further comprises the following steps: and displaying a pre-programmed fault handling plan.
On the other hand, the invention provides a power grid disconnection early warning system considering real-time and N-X expected information, which comprises a real-time mode disconnection early warning module and an expected mode disconnection early warning module;
the real-time mode splitting early warning module is used for monitoring power grid fault information in real time and judging whether the splitting action occurs to the power grid according to the power grid fault information;
and the expected mode splitting early warning module is used for carrying out load flow calculation after the power grid is switched on and off by using a direct current load flow model based on a preset N-X fault set in the current power grid model, and judging whether the power grid is split according to a calculation result.
Further, the system further comprises: and the fault analysis visual interface is used for displaying the splitting information obtained by the real-time mode splitting early warning module and the expected mode splitting early warning module.
Further, the system further comprises: and the fault alarm analysis visual interface is used for carrying out alarm reminding according to the splitting information obtained by the real-time mode splitting early warning module and the expected mode splitting early warning module.
The present invention also provides a computer-readable storage medium, in which a computer program is stored, which, when being executed by a processor, performs the steps of the method as provided in any one of the embodiments of the first aspect.
The invention has the following beneficial technical effects:
the power grid splitting online early warning system and method considering real-time and N-X forecast information are based on two modes of real-time and forecast, a power grid splitting early warning function is given in a targeted mode, so that the operation risk and hidden danger of a power grid can be conveniently and comprehensively mastered by scheduling, splitting behaviors of the power grid caused by real-time faults can be conveniently and comprehensively mastered by the information, the operation state of the power grid can be sensed, the power grid faults can be quickly processed, and the normal operation mode of the power grid can be timely recovered; based on two modes of real time and anticipation, the power grid disconnection early warning function is given in a targeted mode, so that the power grid operation risk and hidden danger can be conveniently and comprehensively mastered in a scheduling mode, and the power grid operation state can be effectively sensed.
The invention can also prompt the dispatcher in a visual graph pushing mode and a voice alarm mode to show the expected fault information of the power grid splitting behavior in detail on a visual page,
drawings
Fig. 1 is a schematic flow chart of a power grid splitting early warning method considering real-time and N-X forecast information according to an embodiment of the present invention.
Detailed Description
The invention will be further explained with reference to the drawings. Fig. 1 is a power grid splitting online early warning system and method considering real-time and N-X forecast information.
The embodiment I provides a power grid splitting online early warning method considering real-time and N-X forecast information, which comprises the following steps: the method comprises the steps of analyzing the operation condition of the power grid through real-time mode disconnection early warning and expected mode disconnection early warning, realizing real-time mode disconnection early warning, monitoring newly-added fault equipment of the power grid, transmitting fault information, analyzing the power grid disconnection online early warning system after receiving the fault information, performing topology analysis on the power grid state by acquiring the state of a power grid breaker, recording the information of electric islands before and after the power grid fault, including the number of the electric islands, the number of calculation nodes of each electric island and the information of a balancing machine of each electric island, comparing and analyzing the number of the electric islands before and after the power grid fault, the number of the electric island nodes and the information of the balancing machine, and determining the disconnection behavior of the power grid according to the number change of the electric islands after the equipment fault, whether a new. And if the splitting condition occurs, positioning the position of the newly added electrical island, and counting the information of the devices such as the generator, the load, the bus, the line and the like of the newly added electrical island after the splitting.
And performing expected failure on-off calculation through the early warning of disconnection in an expected mode. An N-X fault set in the current power grid model is defined, a direct current load flow model is used for calculation, and load flow calculation after switching on and switching off can be quickly and effectively performed by utilizing the characteristics of the linear model. Let the node impedance short matrix of the original transmission system network be X, and the nodes at the two ends of the branch circuit be i, j. A line is one component in a branch. Obtaining an impedance matrix when adding a line k with impedance Xk by branch adding principle (see formula 1)
Equation 1 can be simplified to
Wherein
When line k is opened to disconnect the grid, X' in equation 1 is not present, when β iskInfinity. Thus making use of betakThe disconnection of the power grid disconnection can be conveniently found out. And recording the disconnection of the power grid disconnection, and counting the equipment conditions in the newly added island after disconnection, including load, power generation, bus, alternating current line section and the like.
In this embodiment, if the power grid is judged to be in a splitting behavior, the position of the newly-added electrical island is located, the information of the equipment in the newly-added electrical island after splitting is counted, and early warning can be given to a dispatcher to master the operation risk and hidden danger of the power grid.
In a second embodiment, on the basis of the first embodiment, in order to implement real-time display of the splitting result and the warning information, the embodiment further includes: carrying out statistical display on fault related information which can cause the power grid to have a splitting behavior; the method comprises the steps of storing a database of power grid splitting information, displaying the power grid splitting information under 2 conditions of expected faults and real-time faults in an expected fault analysis visual interface and a fault alarm analysis visual interface of a D5000 system, displaying devices causing splitting, displaying a compiled fault handling plan, displaying device information of generators, loads, buses, lines and the like in a newly-added electrical island, and simultaneously carrying out voice alarm reminding.
The third embodiment provides a power grid splitting online early warning method considering real-time and N-X forecast information, which comprises the following steps: (1) and (3) splitting and early warning in a real-time mode: the method comprises the steps that real-time monitoring on power grid equipment faults is achieved through a splitting fault monitoring function deployed on a comprehensive intelligent alarm host, fault information is pushed to a power grid splitting online early warning system when new power grid faults occur, trigger type analysis is conducted on the power grid splitting function after the fault information is received, whether splitting occurs on a power grid is judged, and if splitting occurs on the power grid, relevant information including names of loads, power generation, buses and lines and measurement information is recorded.
(2) Anticipatory mode disconnection warning: the method comprises the steps of scanning expected faults by deploying a network analysis application host, analyzing the electrical condition of a newly added node, judging whether a generator and a load node exist in the newly added node at the same time, if the generator and the load node exist at the same time, if the number n of nodes in the newly added island is larger than n0(n0 can be set according to the scale of a power grid and the scheduling requirement), the expected faults can cause power grid disconnection, and meanwhile, analyzing whether the expected faults can cause power grid disconnection by using the characteristics of a disconnection model of direct current flow. Recording expected faults causing power grid splitting, and counting relevant information in the newly-added island after splitting, wherein the relevant information comprises the names of loads, power generation, buses and lines and measurement information.
(3) And (3) outputting a grid splitting result: the power grid splitting information is stored in a database, the power grid splitting information under the conditions of expected faults and real-time faults is displayed in a subsection mode on an expected fault analysis visual interface and a fault alarm analysis visual interface of a D5000 system, equipment causing splitting is displayed, information of equipment such as a generator, a load, a bus and a line in a newly-added electric island is displayed, and meanwhile voice alarm reminding is conducted.
The real-time splitting early warning in this embodiment specifically includes the following contents:
(101) the real-time mode early warning provides a splitting fault monitoring function, monitors the faults of the newly added power grid in real time, and sends fault information to a power grid splitting judgment function; judging whether the power grid is in a splitting behavior due to a power grid fault by acquiring information content returned by a power grid splitting judgment function, and recording splitting related information if the power grid is in the splitting behavior due to the power grid fault;
(102) the real-time mode early warning provides a power grid splitting judgment function, carries out real-time topology on a power grid, acquires the state of a power grid breaker, analyzes the conditions of an electric island before and after a power grid fault, and judges whether the power grid is split or not. If the splitting occurs: firstly, counting the information of the generators, loads, buses, lines and other equipment of the newly added electric island after the splitting; then, associating the targeted fault handling plan text in the system with the fault equipment, automatically popping up a window in a real-time alarm visual interface for prompting, prompting a dispatcher on a handling method of the power grid breakdown accident, and avoiding the trouble of manually turning over the accident plan; finally, by analyzing the information of the set and the load after the splitting, a set model in an AGC module is automatically topologically arranged by the system, the PLC control state of the set corresponding to the set in the new electric island in the AGC module is set to be an exit or waiting state so as to avoid issuing wrong AGC instructions, the frequency measurement and the lowest/highest voltage value of a station in the new electric island are read, and the information is prompted to a dispatcher in the form of an alarm bullet window;
(103) the real-time mode early warning provides a power grid splitting judgment function calculation mode, the splitting judgment function receives fault information sent by the splitting fault monitoring function and then carries out trigger calculation, and when the fault information is not received, the splitting judgment function carries out rolling calculation according to a set period t;
the anticipatory mode is listed as early warning, and specifically comprises the following contents:
(201) static safety analysis N-1 fault scanning, performing on-off analysis calculation on the on-off of a single device, and judging whether the power grid disconnection is caused by the on-off;
(202) scanning an N-X fault set through static safety analysis, and automatically generating an N-X expected fault set according to a manually input fault set combination or a system according to a naming rule of the same-name double (three) circuit lines; performing on-off analysis calculation on the N-X fault set, and judging whether the power grid disconnection is caused by on-off;
(203) counting equipment of the newly added electric island, generating a new electric island if the power grid is disconnected due to disconnection, and analyzing information of a generator, a load, a bus and line equipment of the newly added electric island;
in this embodiment, it is expected that the failure splitting analysis and judgment obtains a splitting result, and the splitting result includes the following contents:
when the expected fault is disconnected, a new electric island is set out, and generators, loads and other equipment exist in the island;
it is contemplated that a fault will be followed by a disconnection to a purely powered area, i.e., an area with only load equipment and no generator equipment, and that such a disconnection will also be included in the disconnection result.
The power grid splitting result output and display of the embodiment includes the following contents:
(301) storing relevant information of the splitting behavior of the power grid caused by real-time and expected faults to a database;
(302) displaying the disconnection equipment causing the power grid to generate disconnection behaviors through an expected fault visual interface, marking by using a disconnection icon different from a conventional fault, and simultaneously displaying equipment information such as a generator, a load, a bus, a line and the like in a newly-added island;
(303) displaying the accurate position of a cut-off device causing the power grid to generate a splitting behavior in a visual geographical tide graph;
(304) displaying real-time power grid faults which cause power grid splitting through a fault analysis visual interface, marking by using splitting icons, displaying equipment information such as generators, loads, buses and lines in the newly-added island, and displaying contents such as a fault handling plan and splitting electric island frequency and highest/low voltage;
(305) the power grid is disconnected due to the power grid fault, the information text can be synthesized according to the disconnection time and the equipment, and voice service is called to perform voice alarm until a dispatcher manually confirms the alarm event, so that the dispatcher can be quickly and effectively informed to remind the dispatcher.
According to the invention, through the power grid splitting online early warning system, the analysis and diagnosis of the power grid running state are realized, the display is carried out through the comprehensive visual interface of the D5000 system, and the voice alarm reminding can be carried out, so that a dispatcher can find an extreme mode of splitting the power grid at the first time, the position of a fault device causing splitting of the power grid is quickly positioned, the electronic fault handling plan information is quickly obtained from the system, the problem of insufficient flexible perception capability of the dispatcher in response to sudden extreme accidents such as power grid splitting and the like is solved, the accident handling time is saved, and the dispatcher is helped to flexibly, quickly and effectively handle the fault.
Fourth embodiment, corresponding to the power grid splitting online early warning method considering real-time and N-X forecast information provided in the foregoing embodiments, the present embodiment provides a power grid splitting online early warning system considering real-time and N-X forecast information, including: the system comprises a real-time mode disconnection early warning module and an expected mode disconnection early warning module;
the real-time mode splitting early warning module is used for monitoring power grid fault information in real time and judging whether the splitting action occurs to the power grid according to the power grid fault information;
and the expected mode splitting early warning module is used for carrying out load flow calculation after the power grid is switched on and off by using a direct current load flow model based on a preset N-X fault set in the current power grid model, and judging whether the power grid is split according to a calculation result.
Fifth, the present embodiment provides a power grid splitting online early warning system considering real-time and N-X forecast information, including: a real-time mode disconnection early warning module and an expected mode disconnection early warning module;
the real-time mode splitting early warning module comprises a splitting fault monitoring module and a power grid splitting analysis module, the splitting fault monitoring module is used for monitoring power grid fault information in real time and pushing fault equipment information to the power grid splitting analysis module, and the power grid splitting analysis module is used for judging whether the power grid is split according to the power grid fault information; and if the splitting behavior of the power grid is judged, positioning the position of the newly added electric island so as to determine the equipment causing the splitting as fault equipment, and counting the equipment information of the newly added electric island after the splitting.
The anticipatory mode splitting early warning module comprises a static safety analysis module, wherein the static safety analysis module is used for carrying out load flow calculation after the power grid is disconnected by using a direct current load flow model based on a preset N-X fault set in a current power grid model, judging whether the power grid is split or not according to a calculation result and determining the disconnection of the power grid splitting; and if the splitting behavior of the power grid is judged, the position of the newly added electric island is positioned, the equipment causing the splitting is determined to be an N-X fault set, and the equipment information of the newly added electric island after the splitting is counted.
The power grid splitting online early warning system and method considering real-time and N-X expected information in the embodiment comprise real-time splitting early warning and expected splitting early warning.
The processing flow of this embodiment is:
and (3) splitting and early warning in a real-time mode: the method comprises the steps that a splitting fault monitoring module arranged on a comprehensive intelligent alarm host is used for monitoring faults of power grid equipment, fault information is pushed to a power grid splitting judgment function when new faults occur, a power grid splitting analysis module receives the fault information to analyze and judge whether splitting occurs in a power grid, and if splitting occurs, statistical information after splitting of the power grid is returned to a power grid splitting online early warning system.
Anticipatory mode disconnection warning: through the static safety analysis module deployed on the static safety analysis host, analysis of power grid splitting caused by expected faults is achieved, disconnection of the power grid splitting is analyzed, and the conditions of equipment in a newly-added island after splitting, including load, power generation, buses, alternating current line sections and the like, are counted.
The power grid splitting online early warning system considering real-time and N-X expected information further considers power grid splitting result output and display, and further comprises a fault analysis visual interface, wherein the fault analysis visual interface is used for displaying splitting information obtained by the real-time mode splitting early warning module and the expected mode splitting early warning module.
Optionally, the system further comprises: and the fault alarm analysis visual interface is used for carrying out alarm reminding according to the splitting information obtained by the real-time mode splitting early warning module and the expected mode splitting early warning module.
The grid splitting result output and display are realized through the fault analysis visual interface and the fault alarm analysis visual interface, and the method comprises the following steps: the power grid splitting information is stored in a database, the power grid splitting information under two conditions of expected faults and real-time faults is respectively displayed on an expected fault analysis visual interface and a fault alarm analysis visual interface of a D5000 system, equipment causing splitting is displayed, information of equipment such as a generator, a load, a bus and a line in a newly-added electrical island is displayed, and meanwhile voice alarm reminding is carried out.
Finally, it should be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the systems and modules described above and the corresponding processes in the foregoing method embodiments may be mutually referred to, and are not described herein again.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the 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.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. The power grid disconnection early warning method considering real-time and N-X forecast information is characterized by comprising a real-time mode disconnection early warning and a forecast method disconnection early warning; wherein,
the real-time mode is listed as early warning, includes: monitoring power grid fault information in real time, and judging whether a power grid is in a splitting behavior or not according to the power grid fault information;
the anticipatory method lists the early warning, including: and based on a preset N-X fault set in the current power grid model, performing load flow calculation after the power grid is switched on and switched off by using a direct current load flow model, and judging whether the power grid is in a splitting behavior according to a calculation result.
2. The power grid disconnection warning method considering real-time and N-X forecast information as claimed in claim 1, further comprising locating a position of a newly added electrical island when a disconnection behavior of the power grid is judged, and counting information of devices in the newly added electrical island after the disconnection.
3. The power grid disconnection early warning method considering real-time and N-X preconceived information as in claim 1, wherein the real-time disconnection early warning specifically comprises; monitoring newly-added fault equipment of the power grid in real time to obtain fault information, analyzing based on the fault information to obtain the state of a breaker of the power grid, and carrying out topology analysis on the state of the power grid; determining electric island information before and after a power grid fault according to the state of the power grid breaker and a topological analysis result;
comparing the number of the electric islands before and after the power grid fault, if the number of the electric islands is increased, a new balancing machine is generated at the same time to judge that the power grid is disconnected, and determining fault equipment according to the fault which causes the power grid disconnection.
4. The power grid splitting early warning method considering real-time and N-X forecast information as claimed in claim 1, wherein the step of determining a splitting behavior of the power grid by using the forecast method splitting early warning further comprises determining a fault causing the splitting of the power grid, and the specific method is as follows:
determining to add an impedance of xkThe impedance matrix X' at line k, the expression is as follows:
wherein X is the node impedance short matrix of the original power transmission system network, XL＝Xek，XLL＝XLek+Xij，
The impedance matrix X' is simplified to the following expression:
wherein
When line k is opened to disconnect the grid, betakInfinity, the device causing the grid disconnection at this time is the open line k.
5. The power grid splitting early warning method considering real-time and N-X forecast information according to claim 1, further comprising: and displaying the equipment causing the power grid disconnection and displaying the equipment information in the newly added electric island.
6. The power grid splitting early warning method considering real-time and N-X forecast information according to claim 1, further comprising: and displaying a pre-programmed fault handling plan.
7. The power grid disconnection early warning system considering real-time and N-X expected information is characterized by comprising a real-time mode disconnection early warning module and an expected mode disconnection early warning module;
the real-time mode splitting early warning module is used for monitoring power grid fault information in real time and judging whether the splitting action occurs to the power grid according to the power grid fault information;
and the expected mode splitting early warning module is used for carrying out load flow calculation after the power grid is switched on and off by using a direct current load flow model based on a preset N-X fault set in the current power grid model, and judging whether the power grid is split according to a calculation result.
8. The grid disconnection warning system considering real-time and N-X forecast information of claim 7, wherein the system further comprises: and the fault analysis visual interface is used for displaying the splitting information obtained by the real-time mode splitting early warning module and the expected mode splitting early warning module.
9. The grid disconnection warning system considering real-time and N-X forecast information of claim 7, wherein the system further comprises: and the fault alarm analysis visual interface is used for carrying out alarm reminding according to the splitting information obtained by the real-time mode splitting early warning module and the expected mode splitting early warning module.
10. 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 method according to any one of claims 1 to 6.
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| CN110991910A (en) * | 2019-12-06 | 2020-04-10 | 广东电网有限责任公司 | Electric power system risk prediction method and device |
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