The invention provides a method and a system for judging power grid faults based on historical recording data. The method comprises the steps of constructing a transient breakvariable matrix according to the preset historical recording data and detecting out the abnormal phases of the historical recording data in the transient breakvariable matrix, constructing a characteristic value matrix by virtue of wavelet transform on the historical recording data according to the abnormal phases of the historical recording data and obtaining an input sample set of clustering analysis according to the characteristic value matrix, performing clustering analysis according to the input sample set and establishing a fault reason clustering model and establishing a fault reason clustering model, and extracting the characteristic vector of the real-time recording data, calculating the Euclideandistance of the characteristic vector and the central vector of each cluster, and recording the fault reason corresponding to the cluster having the minimum Euclidean distance as the fault reason of the real-time recording data, wherein the fault reason clustering model comprises a plurality of clusters, and each cluster comprises the central vector and the corresponding fault reason. The method is capable of judging the reasons of the power grid faults by use of the historical recording data in real time.

Method and system for judging power grid faults based on historical recording data

The invention discloses a method and a device for acquiring stereoscopic thermodynamic diagrams. The method includes acquiring data of planar thermodynamic diagrams of web pages; creating three-dimensional coordinate systems on the basis of clicking acquisition layers and acquiring isometric diagrams; displaying the data of the planar thermodynamic diagrams on the isometric diagrams to acquire the stereoscopic thermodynamic diagrams. The data of the planar thermodynamic diagrams include clicking data of the web pages. The method and the device have the advantages that the order of magnitude of the big data can be visually displayed by the aid of the method and the device, and excellent observation and use experience can be improved.

Method and device for acquiring stereoscopic thermodynamic diagrams

The invention relates to a fault diagnosis method and system for a primary loop of a power grid. The method comprises acquiring the practical operation data of each detection point for a primary loop; comparing the practical operation data with the operation data in the normal state for the primary loop to determine whether the primary loop malfunctions; acquiring a fault state list for the primary loop, and respectively establishing a primary loop fault simulation model corresponding to each device which may malfunction according to the fault state list, wherein the primary loop fault simulation model includes a fault state simulation model for a device which may malfunction and normal state simulation models for other devices; and the fault state simulation model and the normal state simulation models are connected; acquiring the simulation operation data of each detection point of the primary loop fault simulation model; and comparing the simulation operation data of the primary loop fault simulation model with the practical operation data, and determining the device for which the primary loop malfunctions and the fault type of the device according to the comparison result. The fault diagnosis method can accurately determine the fault position in the primary loop.

Fault diagnosis method and system for primary loop of power grid

The invention discloses a three-dimensional thermodynamic diagram processing method and device. The method includes: acquiring data of a planar thermodynamic diagram of a web page, wherein the data of the planar thermodynamic diagram include click data of the web page; establishing a three-dimensional coordinate system on the basis of a click acquisition layer, and acquiring an axonometric diagram; displaying data of the planar thermodynamic diagram on the axonometric diagram and acquiring a three-dimensional thermodynamic diagram; using a first datum plane and a second datum plane which are preset to segment the three-dimensional thermodynamic diagram, and acquiring the three-dimensional thermodynamic diagram in a preset range. By the method and device, the thermodynamic diagram can be read accurately on the basis of order of magnitude capable of visually displaying big data.

Three-dimensional thermodynamic diagram processing method and device

The invention discloses a method for deducing a power system fault. A Bayesian network model is constructed based on a network topology structure before fault occurrence of a power system; the constructed Bayesian network is analyzed and processed according to fault information that is uploaded under the condition of fault occurrence of the power system; and then action information of protection devices corresponding to all elements under the condition of fault occurrence of the power system is obtained and thus deduction of the power system fault is realized. The Bayesian network model is anuncertainty causal relationship association model and has the powerful uncertainty problem processing capability; and multi-source information expression and fusion are carried out effectively and various uncertainty and incompleteness information can be processed, so that the fault tolerance capability is strong. Compared with the prior art with an expert system mechanism for deduction, the deducing method disclosed by the invention enables the fault deduction accuracy and efficiency to be improved. In addition, the invention also discloses an apparatus and equipment or deducing a power system fault and a readable storage medium that have the same effects.

Method, apparatus, and equipment for deducing power system fault and readable storage medium

Simulation method for realizing replay of grid fault

The invention discloses a power grid information three-dimensional display method based on multiple display diagram types. The method comprises the following steps of: (1) reading in a main wiring diagram of a power grid, and automatically generating a power grid main wiring diagram background plane on a computer; (2) reading in data of the power grid and location information of the power grid; (3) setting colors corresponding to the data, and mapping different values to different colors by use of three different color components according to a mapping function shown in the specification of the invention: (4) determining power grid information types and corresponding display diagram types of the data, wherein the display diagram types are three-dimensional histograms, three-dimensional curved diagrams, three-dimensional piping diagrams or three-dimensional arrow diagrams; and (5) automatically calculating and generating display diagrams according to the desired display diagram types and the data. By virtue of the method disclosed in the invention, the data of the power grid can be represented rapidly and visually with high efficiency, so that a dispatcher can rapidly know whether a fault occurs in a current system as well as the location and severity of the fault.

Power grid information three-dimensional display method based on multiple display diagram types

The utility model relates to an electric automobile rechargeable battery self-help replacing cabinet which is applicable to electric automobile rechargeable batteries and particularly applicable to the self-help replacement of the electric automobile rechargeable batteries The electric automobile rechargeable battery self-help replacing cabinet comprises a cabinet body and six box bodies which are arranged on the cabinet body and are provided with box doors; the top wall and the periphery in each box body are paved with insulating rubber; an electricity leakage detecting device is arranged at the bottom of each box body; each box body is provided with a cabinet lock; each cabinet lock adopts an intelligent IC (integrated circuit) control lock; each intelligent IC card control lock comprises an intelligent IC card control board and an electronic control lock body, wherein the intelligent IC card control board is arranged in front of each cabinet body and has an IC card information reading function and an electricity leakage locking-alarming function, while the electronic control lock body is connected with the intelligent IC card control board; the electricity leakage detecting device is also connected with the intelligent IC card control board; the intelligent IC card control board is provided with a 24-hour standby power supply; and each box door is made from insulating plastic as required With the electric automobile rechargeable battery self-help replacing cabinet, a user can replace the rechargeable batteries easily and rapidly

Electric automobile rechargeable battery self-help replacing cabinet

Disclosed is a power grid information 3D display method using a plurality of display diagram types, which comprises the following steps: (1) reading a main wiring diagram of a power grid, generating a background plane of the main wiring diagram of the power grid on a computer automatically; (2) reading data of the power grid and location information of the power grid; (3) setting colors corresponding to the data: mapping different values to different colors through different three color components, a mapping function being: f(v)=[fR(v)fG(v)fB(v)]; (4) determining a power grid information type of the data and a corresponding display diagram type, the display diagram type being a 3D bar diagram, a 3D surface diagram, a 3D pipeline diagram or a 3D arrow diagram; and (5) computing and generating a display diagram automatically according to the required display diagram type and the data. By means of the present invention, the data in the power grid can be rapidly, efficiently and visually represented, so that a scheduler may rapidly see whether a problem occurs in a current system and find the position and severity of the problem if the problem occurs.

Power grid information 3d display method based on a plurality of display diagram types

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Papers

Simulation method for realizing replay of grid fault

Power grid information three-dimensional display method based on multiple display diagram types

Electric automobile rechargeable battery self-help replacing cabinet

Power grid information 3d display method based on a plurality of display diagram types