51results about How to "Improve the level of practicality" patented technology

The invention discloses an automatic mapping monitoring system and method of an intelligent substation secondary virtual loop. The method comprises the steps of: firstly, obtaining an SCD file for reading all station devices and carrying out analysis to obtain an included data models and connection relations corresponding to switches and virtual loop devices; creating pixels corresponding to different switches and virtual loop devices so as to form a pixel database; establishing a mapping correlation between the switch pixels and the switches, generating a switch network map indicating switch link connection relations, establishing a mapping correlation between the virtual loop device pixels and the devices, and generating a virtual terminal connection map indicating device link topological connection relations, with an interval serving as a unit; and finally, receiving real-time virtual loop link states uploaded by devices in the intelligent substation in real-time, updating the corresponding switch network map and virtual terminal connection map, and monitoring the link states online. According to the invention, the mapping efficiency of the switch connection map and the virtual terminal connection map can be improved, the online real-time monitoring level is increased, and the operation and maintenance efficiency of the secondary virtual loop is improved effectively.

The invention provides a reduction and generation method of an action report of a relay protection device at a scheduling port, which is applied to a power network relay protection and failure information management system. The method comprises the following steps: normalizing output information of a relay protection device on a station port, and sending the information by classification; establishing a communication specification between a master station and a slave station to guarantee integral data transmission; and outputting corresponding action report at the scheduling port of the masterstation according to the device type to realize reduction and generation of the device report at the scheduling port. The method in the invention helps realize that the action report is basically consistent with the report form and the content printed on the spot by the relay protection device in an information display layer of a master station system. The method is completed and practical; and the method helps perfect the information content sent by the relay protection device, solve the long-standing functional problems of the domestic relay protection and failure information management system such as scattered information, shortage of the content and the like, meanwhile formally realize long pass of the relay protection action report, is beneficial to relay protection professional staffs to carry out protection action analysis, and improve the integral practicability level of the system.

The invention discloses an automatic quantum key charging method and system adapting to electric power services. Quantum keys are divided into a quantum authentication key, a quantum encryption key and a quantum updating key according to a deployment structure for electric power service main station convergence and electric power service terminal access; the quantum authentication key is used foridentity authentication during communication interaction; the quantum encryption key is used for encryption and decryption of data during the communication interaction; and the quantum updating key isused to encrypt and decrypt a new quantum key in the communication interaction when used to update the quantum authentication key and the quantum encryption key and/or the quantum updating key. The quantum updating key updates the quantum authentication, encryption and/or updating keys, thereby realizing automatic charging and updating of the quantum keys.

The invention discloses a substation inspection robot image semantic analysis system and method. The system comprises an embedded AI analysis module, a binocular vision camera, an inspection camera, and a three-dimensional laser radar multi-degree-of-freedom mechanical arm, wherein the binocular vision camera, the inspection camera and the three-dimensional laser radar multi-degree-of-freedom mechanical arm are connected with the embedded AI analysis module, and the embedded AI analysis module comprises a roaming semantic map construction module; and the embedded AI analysis module is configured to be acquiring binocular image data, inspection image data and three-dimensional point cloud data of a current environment in real time; acquiring spatial distribution of objects in the current environment based on the binocular image data and the three-dimensional point cloud data; and achieving automatic recognition of the passable unknown region around the robot, achieving the motion planning of the robot in the unknown region through a local path planning technology, and executing the map construction of the unknown environment till the construction of the whole in-station environmentsemantic map is completed. According to the system, real-time and efficient identification of the inspection video is realized, and the accuracy of substation equipment identification is improved.

The invention provides a power grid simulation training method based on multi-scene application. The method comprises the steps of: firstly setting corresponding scene building permission for different users; setting five simulation scene types including dispatcher training simulation, monitor training simulation, combined regulation business training simulation, joint anti-accident training and multi-student grouped training and contest practice and loading corresponding simulation scene building interfaces; performing dynamic building of the simulation scenes and server simulation scene resource distribution; acquiring corresponding graphic-model data from a model data cloud platform according to simulation areas and simulation time selected by users and pushing typical sections from anoperating data cloud platform; executing simulation training practice; releasing simulation scene resources after training assessment is over. The method realizes full sharing and elastic expansion ofsimulation resources and solves the technical problem of low resource utilization rate under different simulation scenes.

The invention provides an alternating-current and direct-current power distribution network system load flow computing method based on droop control. The method includes the following steps that firstly, initialization computing of a sagging curve is carried out; secondly, direct-current power of a direct-current power distribution system is updated through the Newton algorithm; thirdly, according to the updated direct-current power, a middle node voltage equation of an alternating-current power distribution system is solved, and droop characteristics are led into the alternating-current power distribution system; fourthly, whether alternating-current power flow and direct-current power flow converge or not is judged, if no, the second step continues for iterative computation till the alternating-current power flow and the direct-current power flow converge at the same time, and meanwhile a result is output. The invention provides the power flow mixing computing method suitable for a multi-terminal interconnection alternating-current and direct-current power distribution system adopting droop control, the gauss algorithm is adopted in the alternating-current power distribution system, and the Newton algorithm is adopted in the direct-current power distribution system. Meanwhile, the advantage that the gauss algorithm is little in calculation quantity and the advantage that the Newton algorithm is good in convergence are both taken into consideration, the problem that power flow does not converge is avoided, and the practicality level of power flow computing is improved.

An extracting method of a reference voltage of a dynamic voltage restorer in an isolated neutral system comprises the steps that amplitudes of phase voltages of an A phase, a B phase and a C phase and amplitudes of three line voltages on the DVR system side are measured after faults, the minimum value and the maximum value of the amplitudes of the three line voltages are respectively obtained to judge whether falling off can be compensated, if falling off can be compensated, the measured amplitudes of the three phase voltages on the DVR system side can be compared with corresponding rated values, the procedure is completed when it is determined that no fault occurs according to comparing results, and voltages on the DVR load side after compensation are obtained according to fault types when it is judged that the faults occur; it is determined that reference voltages of the phases of a DVR are phasor differences of the voltages on the DVR system side after compensation and the voltage on the DVR system side after the faults. The voltages needing to be compensated by the DVR can be obtained only by detecting the amplitudes of the phase voltages and the amplitudes of the line voltages on the DVR system side, implementation is easy to achieve, and important practical value is brought to improvement on the practical level of the DVR in the isolated neutral system.

The invention discloses a coordination-consistency based distributed power supply control method and system for a power distribution network. The control method comprises the steps of extracting reactive power required to be injected to the power distribution network, forming a distributed power supply set for achieving the purpose of injecting the reactive power to the power distribution network, forming a coordination-consistency controlled and reactive-power-decomposed matrix, calculating the reactive power injection setting value of each distributed power supply in the set, transmitting the reactive power injection setting value to the corresponding distributed power supply by a voltage monitoring apparatus through a bidirectional communication circuit; and enabling each distributed power supply to generate the corresponding reactive power to be injected to the power distribution network according to the reactive power injection setting value so as to enable the sum of the injected reactive power to satisfy demands. The control method does not require a central control unit; and the distributed power supply can automatically regulate the output reactive power to effectively maintain the node voltage level of the power distribution network, provide the power supply quality and the power supply reliability, take full advantage of the distributed power supply in providing the auxiliary service to the power distribution network, further improve the service efficiency of the distributed power supply, and promote the development and the utilization of the distributed power supply.

The invention discloses a power flow diagram wiring method. Modeling through graphics, Wiring Channel Construction, Full-path search and evaluation selection, With the implementation of secondary wiring and parallel splitting, the automatic wiring of power flow diagram is completed, which achieves the goal of whole wiring leveling, less intersection and even spacing, and solves the practical problems of low efficiency, error-prone and different styles of wiring relying on manual drawing, and provides auxiliary technical support for the automatic operation and maintenance of power flow diagram.

The invention discloses an artificial intelligence system and method serving a power robot, and the system comprises an embedded CPU module which is configured to send a data scheduling instruction to a data processing module; the data processing module which is configured to perform intelligent processing on the received data based on the received data scheduling instruction, wherein the data processing module comprises an environment perception unit which is configured to realize intelligent construction and obstacle identification of a three-dimensional semantic map of a target area based on multi-sensor fusion information; a path planning unit which is configured to realize path planning of the power robot based on the constructed three-dimensional semantic map; and a data analysis unit which is configured to realize defect identification and position detection of target equipment based on the acquired image information of power equipment. Based on a lightweight deep network model, intelligence of sensing, planning, operation and decision making of the power robot is realized, and the intelligent operation level of the power robot is effectively improved.

The invention relates to a method, for positioning power system power oscillation disturbance source in real time, based on SCADA (supervisory control and data acquisition) data. The method includes the steps of firstly, calling a time sequence database interface of an EMS (enhanced message system) to obtain an active value of power equipment; secondly, calling an oscillation feature iterative function, inputting new data on the basis of a previous state, calculating feature quantity of active oscillating of one grid equipment, comparing with a preset fixed value, and returning equipment state; and thirdly, positioning a disturbance source in real time, and positioning the equipment, which is triggered to oscillate firstly, as the disturbance source. By the method, data accuracy is improved, practicality level is improved, investment is saved greatly, and convenience and practicality are achieved.

The invention discloses a transformer substation inspection robot obstacle encountering control method and system. The method comprises the steps of: loading a generated path calibration map into an inspection robot; enabling the inspection robot to execute an inspection task and autonomously navigate and walk according to an inspection path; acquiring point cloud data in a road area range in realtime; and judging whether an obstacle exists in the inspection path area or not according to the point cloud data, and executing corresponding operation according to a judgment result until the inspection task is finished. According to the invention, the 3d laser radar is adopted to perform obstacle sensing while meeting autonomous navigation and positioning requirements, a laser radar sensor isfully utilized, various obstacle encountering control methods are provided, and after the robot encounters a fault, different processing modes are performed according to different road conditions, different obstacle sizes and positions, so that intelligent obstacle treatment of the robot is realized, the problems of single obstacle treatment mode, low intelligent level and the like of the robot are solved, the labor cost of operation and maintenance is reduced, and the practical level of products is improved.

The invention provides a parameter identification method based on graph theory and a device. an equation only comprising reactance parameters is established based on the graph theory; constrained conditions of observability of single power grid section parameters are determined; PMU measurement is adopted for parameter estimation for the devices which are equipped with PMU measurement; two-step parameter estimation is executed on the basis of residual error for the devices which are not equipped with PMU measurement. The pre-estimation of parameter values is quick and accurate; by means of the method, effective identification of high voltage loop grid parameters is achieved; suspicious device parameters can be accurately positioned so that the power grid technical data quality is improved and the practical level of electric power system network analysis is increased.

The invention discloses a graph multi-version dynamic storing and publishing method for an electric power system. The method comprises the following steps: (1) importing a graph and a model by using a graph model maintenance tool, and downloading a graph information table to form a current graph file set and graph maintenance information; (2) manually creating a model version number, and establishing a graph version storage identifier by the graph according to the current model version number; (3) editing the graph for maintaining, storing the graph in a network after the editing is completed, updating the graph information table by the graph, and storing a graph file to the current graph version storage identifier of a file server; (4) before the graph is published, comparing the versions of the graph and the model to ensure the integrity of the graph version; (5) performing graph verifying according to a graph verifying rule; (6) after the graph and the model are verified, putting the graph and the model on line formally. According to the method disclosed by the invention, the graph model maintenance task integration is ensured; the graph model maintenance supporting capacity, the practical level of a plurality of versions of the graph and the model and the graph version accessing efficiency are improved; therefore, the graph multi-version dynamic storing and publishing method for the electric power system has a good application prospect.

The invention discloses a comprehensive diagnosis platform-based operation monitoring system for a dispatching master station system. The comprehensive diagnosis platform comprises a commercial library and real-time library synchronous comparison module, a comprehensive patrol module and a security auditing module; tools in the modules are subjected to graphic interface operation through operationcommand integration, shell script development and man-machine service compilation; script control based on a working module and a working process is established; and design is carried out in combination with a QT open source graphic interface by using a C++ programming technology, so that man-machine visual interaction of tool sets is achieved. A program is compiled according to a fault in advance and comparison and check are automatically executed; the software program can be installed and debugged only in a short period of time after being applied to the master station system; and after automatic application to a background for execution, the reliability and the working efficiency of the system are greatly improved.

The invention discloses an electric power monitoring method based on a time-delay confirmation intelligent alarm. The method comprises the steps that the time-delay confirmation intelligent alarm which is accessed to a monitoring system works in a conventional working mode when an instruction of the monitoring system is not received, that is when a worker forgets to close a door after leaving, a field sound-light alarm and a monitoring system alarm window, a picture or a mobile phone short message alarm are sent out; and a non-working screen cabinet is logically locked when the instruction ofthe monitoring system is received, and when a worker opens the cabinet door of the non-working screen cabinet, the alarm gives an alarm on site and sends an emergency alarm signal to the monitoring system, wherein the monitoring system comprises a dispatching automation system, a transformer substation monitoring background or an operation management and control system. By means of the monitoringmethod, the worker can be effectively prevented from mistakenly entering an electrified interval and mistakenly walking into the interval, the probability of A-type violation and personal casualty accidents is reduced, and the worker jumps out of a conventional mode and passes through protective articles, use of safety production tools and instruments, regulations and regulations and the like.