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Automatic mapping monitoring system and method of intelligent substation secondary virtual loop
InactiveCN105680568AImprove drawing efficiencyShorten the timeCircuit arrangementsInformation technology support systemVirtual terminalSmart substation
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.
Owner:NANJING GUODIAN NANZI POWER GRID AUTOMATION CO LTD
Reduction and generation method of action report of protection device at scheduling port
ActiveCN101640436AIncrease the level of automationImprove the level of practicalityCircuit arrangementsInformation technology support systemDevice typeMaster station
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.
Owner:STATE GRID ZHEJIANG ELECTRIC POWER +2
Automatic quantum key charging method and system adapting to electric power services
ActiveCN109412794AImprove the level of practicalityReduce construction costsKey distribution for secure communicationPrimary stationQuantum authentication
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.
Owner:南京南瑞网络安全技术有限公司 +2
Substation inspection robot image semantic analysis system and method
ActiveCN111958592AImprove operational safetySolve the problem of insufficient front-end image analysis functionsProgramme-controlled manipulatorEngineeringComputer graphics (images)
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.
Owner:STATE GRID INTELLIGENCE TECH CO LTD
A power grid simulation training method based on multi-scene application
InactiveCN108877368AAchieve sharingFully elasticCosmonautic condition simulationsEducational modelsResource utilizationTraining assessment
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.
Owner:NARI TECH CO LTD +2
Alternating-current and direct-current power distribution network system load flow computing method based on droop control
ActiveCN105207209AAvoid non-convergenceFast convergenceAc network circuit arrangementsPower flowDistribution power system
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.
Owner:SHANDONG UNIV OF TECH
Quaternary magnesium base hydrogen storage alloy, its producing method and use
The present invention discloses a kind of quaternary magnesium base hydrogen storing alloy and its production process and application. The quaternary magnesium base hydrogen storing alloy consists of Mg 1.5-2 weight portions, Al 0.02-0.08 weight portion, Ni 0.5-1.0 weight portion and A 0.05-0.1 weight portion, where A is V, Ti, Fe, Nd or Produce; and has dispersed nanometer crystalline clusters and nanometer amorphous clusters in the microstructure. It is produced through mixing alloy element powder, pressing to form sheet, sintering in a vacuum sintering furnace, crushing, ball milling, sieving to obtain alloy powder of granularity smaller than 25 micron; ball milling small amount of Ni powder to obtain nanometer crystalline Ni powder; mixing the alloy powder, the nanometer crystalline Ni powder and active second phase particle through high energy ball milling to obtain active hydrogen storing alloy material. The active hydrogen storing alloy material has low hydrogen adsorbing and desorbing temperature and other features.
Owner:贵州佑邦科技有限公司
Intelligent analysis and control method and system for main distribution network scheduling power failure plan
InactiveCN112561248AGuaranteed validityGuaranteed reliabilityResourcesPower gridInformation integration
The invention discloses an intelligent analysis and control method and system for a main distribution network dispatching power failure plan. The method comprises the steps of obtaining an overhaul plan and a power grid operation data section to realize system information integration; obtaining maintenance equipment based on the maintenance plan, and completing matching of the maintenance equipment and the system model; based on a power grid operation data section and a system model, performing main distribution integrated topology analysis, determining a power failure area influenced by equipment maintenance, forming a transfer strategy, and realizing intelligent arrangement of an operation mode; performing risk assessment on the generated transfer strategy to realize maintenance plan risk assessment; and managing and controlling the maintenance plans and proposing rearrangement suggestions for the maintenance plans with risks based on a risk assessment result, thereby realizing comprehensive management and control of the maintenance plans. According to the invention, information integration, operation mode intelligent arrangement, maintenance risk collaborative evaluation and maintenance plan comprehensive management and control of the main distribution network maintenance plan are realized, the effectiveness of the maintenance plan and the system reliability are ensured, andthe practical level of a service module is improved.
Owner:NARI NANJING CONTROL SYST +2
Distribution network model topology connectivity verification method
The invention discloses a distribution network model topology connectivity verification method. The method comprises two aspects, the first including extracting a single line model through a distribution network feeder hierarchical relation, then clustering based on the connectivity of nodes, generating various connected clustering islands, and then determining the distance among the islands so as to preliminarily determine the connectivity of the single line model; and the second including extracting a single line model through a topological relation, then performing generalized dotted line graphic layout, generating a visualized distribution network topological graph, assisting in determining the model connectivity, or readjusting model extraction conditions, performing model re-extraction and re-layout, and conducting comparative analysis of the single line model connectivity. Based on the objective situation in the application of a distribution network model, the method is used for comparative analysis of the topological boundary and internal connectivity of the single feeder model from the two aspects of the hierarchical and topological relations, and provides calibration means for related applications based on the correctness of a topological model.
Owner:SUZHOU POWER SUPPLY OF JIANGSU ELECTRIC POWER +2
Electric type cable bending apparatus
InactiveCN105261990AAffectReduce laborCable installation apparatusElectric power transmissionEngineering
The present invention discloses an electric type cable bending apparatus, and relates to the technical field of electric power transmission equipment. The electric type cable bending apparatus comprises a sliding chute, wherein two ends of the sliding chute are fixed to a bottom plate respectively through an A supporting leg and a B supporting leg, an A slide block and a B slide block are slidably arranged in the sliding chute, the upper end face of the A slide block is fixedly provided with an A long rod, an A hold ring is rotatably arranged on the A long rod, an A bolt is connected between two protruded front edges of the upper portion of the A hold ring, the upper end face of the B slide block is fixedly provided with a B long rod, a B hold ring is rotatably arranged on the B long rod, a B bolt is connected between two protruded front edges of the upper portion of the B hold ring, an electric push rod is arranged in a horizontal plane where the A hold ring and the B hold ring locate, the electric push rod is arranged on the bottom plate and perpendicular to the sliding chute; the front end of the electric push rod is fixedly provided with a hold hoop. The electric type cable bending apparatus of the present invention has the beneficial effects of good adaptability, convenient use, standard operation, labor saving and time saving, etc.
Owner:DONGYING POWER SUPPLY COMPANY STATE GRID SHANDONG ELECTRIC POWER +2
Extracting method of reference voltage of dynamic voltage restorer in isolated neutral system
ActiveCN103926451AImprove the level of practicalityEasy to implementCurrent/voltage measurementElectrical testingVoltage referenceThree-phase
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.
Owner:WUHAN UNIV
Treating method of fault information system sub-station for overhauling state of protective relaying device
ActiveCN101699706AConducive to the analysis of protective action behaviorThe method is complete and practicalCircuit arrangementsInformation technology support systemFunction problemEngineering
The invention provides a treating method of a fault information system sub-station for overhauling state of a protective relaying device, comprising the steps of installing a plurality of hard pressure pads on a sub-station cabinet with each pressure pad corresponding to one space, manually inputting the pressure pads corresponding to spaces when the device is overhauling, manually outputting the pressure pads corresponding to spaces when the overhauling is finished, and sending a state information of pressure pad to the sub-station in a communication mode by connecting to a device with a function of collecting input quantity, for identifying whether each space is at overhauling state. The sub-station identifies the protective relaying device at overhauling state according to the information of pressure pad. The method is complete and useful, perfects the content classification of information on the protective relaying device, solves the problem that the domestic protective relaying fault information management system can not identify the overhauling state and the function at running state of the protective relaying device, is beneficial for the professionals of relay protection to analyze the protecting action, and promotes the integrate practicability of the system.
Owner:STATE GRID ZHEJIANG ELECTRIC POWER +2
Coordination-consistency based distributed power supply control method and system for power distribution network
ActiveCN105305502ARealize coordinated controlImprove utilization efficiencySingle network parallel feeding arrangementsConsistency controlEngineering
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.
Owner:WUHAN UNIV
A method for wire a power flow diagram of a power network
ActiveCN109460564AEfficient construction of search spaceEfficient Path Search ProcessForecastingSpecial data processing applicationsGraphicsPower flow
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.
Owner:NARI TECH CO LTD +2
Artificial intelligence system and method serving power robot
PendingCN112990310AImprove the level of practicalitySolve poor computing abilityCharacter and pattern recognitionNeural architecturesNetwork modelPower equipment
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.
Owner:STATE GRID INTELLIGENCE TECH CO LTD
Method, for positioning power system power oscillation disturbance source in real time, based on SCADA (supervisory control and data acquisition) data
InactiveCN103178519ASolution rangeResolve accuracySpecial data processing applicationsAc network circuit arrangementsDatabase interfaceSCADA
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.
Owner:CHINA SOUTHERN POWER GRID COMPANY
Communication capacity test device of intelligent carrier electrical energy meters and test method thereof
ActiveCN102590657AReliable test resultsSimple structureElectric signal transmission systemsPower distribution line transmissionTest powerUltrasound attenuation
The invention discloses a communication capacity test device of intelligent carrier electrical energy meters and a test method thereof. The communication capacity test device comprises a computer, a test table body and a concentrator mounted on the test table body; four attenuators and five standard carrier electrical energy meters are mounted on the test table body; the current output end of a test power source is connected in series with the current end of the electrical energy meters through relays, and the voltage output end of the test power source supplies voltage to the electrical energy meters through a multipath isolation voltage mutual inductor which is provided with a bypass relay; and the attenuator and the relay are connected between the voltage ends of each two adjacent electrical energy meters. The attenuation of each attenuator to signals is equal to the attenuation of transmitting a carrier in an actual route for 500 m. The test method comprises a carrier attenuation test, a relay transmission test and a combined carrier attenuation and relay transmission test. With the adoption of the test device and the test method provided by the invention, a test system in a lab is completed aiming to the outstanding problems occurring in situ, so that a test result is accurate and reliable, and an entire structure is simpler.
Owner:STATE GRID HEBEI ELECTRIC POWER RES INST +2
Transformer substation inspection robot obstacle encountering control method and system
PendingCN112269380ARealize intelligent handling of obstaclesSolve processingElectromagnetic wave reradiationPosition/course control in two dimensionsPoint cloudSimulation
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.
Owner:XJ POWER CO LTD +2
Parameter identification method based on graph theory and device
PendingCN106570345AEfficient identificationNumerically stableSpecial data processing applicationsInformaticsElectric power systemHigh pressure
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.
Owner:CHINA ELECTRIC POWER RES INST +4
Graph multi-version dynamic storing and publishing method for electric power system
ActiveCN106649684AImprove the level of practicalityMeet constructionStill image data retrievalSpecial data processing applicationsGraphicsElectric power system
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.
Owner:NARI TECH CO LTD +4
Packaging method of metal lithium reference electrode for lithium battery
ActiveCN112054162ASimple processHigh degree of mechanizationNon-aqueous electrolyte accumulator electrodesLi-accumulatorsMetallic lithiumElectrolytic agent
The invention discloses a packaging method of a metal lithium reference electrode for a lithium battery, and belongs to the technical field of batteries. The metal lithium reference electrode comprises a current collector, a lithium electrode material and a packaging layer. The lithium electrode material is connected with the current collector, the packaging layer wraps the lithium electrode material and the part connected with the current collector, and the other end of the lithium electrode material is exposed in the electrolyte; the packaging layer is an aluminum foil composite film with alayered structure, and sequentially comprises a first polymer layer, a second metal aluminum layer and a third polymer layer from outside to inside. The packaging method is simple and easy to implement, high in operability, high in mechanization degree and suitable for large-scale production, the prepared reference electrode is diverse in size and high in adaptability and has high humid air blocking capacity, only part of active materials are exposed during use, ion exchange is guaranteed, and loss of the active materials is reduced to the maximum extent. Therefore, the reference electrode cankeep long-acting quality and potential stability in storage, transportation and use, and the practical level of the reference electrode for the lithium battery is further improved.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY
Power generation plan optimizing method for restraining unit reverse regulation in power plant
ActiveCN104299055AAvoid inconsistent output adjustment directionsImprove the level of practicalityForecastingInformation technology support systemNew energyUnit operation
The invention discloses a power generation plan optimizing method for restraining unit reverse regulation in a power plant. On the basis of day-ahead and real-time power generation planning input and output data, the data include system loads, new energy prediction, an overhauling plan, section limit, unit shutdown information, a unit reference plan and information of unit sensitivity to monitoring elements, in comprehensive consideration of various restraints such as the system balance restraint, the unit operation restraint, the network security restraint and the unit group restraint, the mapping relation between a unit and the power plant is maintained on the basis of a common optimizing model, and a unit reverse regulation restraint in the power plant is introduced to form a mathematical model of the unit reverse regulation restraint in the power plant. A more reliable, effective and practical unit output plan is achieved, the execution level of the unit plan is increased, the closed-loop levels of day-ahead and real-time plans and AGC are increased, the power generation optimizing method is beneficial to increasing the intelligentization level of day-ahead and real-time power generation plan dispatching and improving the decision-making capacity, and the increasingly-lean safe operation requirement of a large power grid is met.
Owner:NARI TECH CO LTD
Comprehensive diagnosis platform-based operation monitoring system for dispatching master station system
ActiveCN108829376ASynchronous online monitoringAutomated troubleshootingSoftware designGraphicsMonitoring system
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.
Owner:STATE GRID CORP OF CHINA +1
Reduction and generation method of action report of protection device at scheduling port
ActiveCN101640436BIncrease the level of automationImprove the level of practicalityCircuit arrangementsInformation technology support systemDevice typePower grid
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 master station 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.
Owner:STATE GRID ZHEJIANG ELECTRIC POWER +2
Quaternary magnesium base hydrogen storage alloy, its producing method and use
The invention discloses a quaternary magnesium-based hydrogen storage alloy, its production method and application. The quaternary magnesium-based hydrogen storage alloy is composed of Mg1.5-2Al0.02-0.08Ni0.5-1.0A0.05-0.1 , where A is V, Ti, Fe, Nd, Pd, dispersed nanocrystalline clusters and amorphous clusters are distributed in the microstructure. Alloy element powders are fully mixed and pressed into flakes, and then sintered in a vacuum sintering furnace. The obtained alloy samples are crushed, ball milled, and screened to obtain alloy powders with a particle size of less than 25 μm; weigh a small amount of fine Ni powder for ball milling , to obtain nanocrystalline Ni powder; Mg1.5-2Al0.02-0.08Ni0.5-1.0A0.05-0.1 alloy powder with a particle size below 25 μm, nanocrystalline Ni powder and second-phase active particles are fully mixed for high-energy By ball milling, an active hydrogen storage alloy material with nanocrystalline and amorphous structures is obtained, and the finished product is obtained after activation. The finished product has the characteristics of low hydrogen absorption / decomposition temperature, stable performance, practicality and low price.
Owner:贵州佑邦科技有限公司
Electric power monitoring method based on time-delay confirmation intelligent alarm
PendingCN112258783AImprove the level of practicalitySupplement and improve the control content of the computer roomAlarmsElectric transmission signalling systemsReal-time computingPower substation
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.
Owner:GUIZHOU POWER GRID CO LTD
Method and system for optimal scheduling of reactive power in distribution network based on virtual power plant
ActiveCN105071410BImprove utilization efficiencyImprove the level of practicalityReactive power adjustment/elimination/compensationReactive power compensationPower stationVirtual power plant
The invention relates to a power distribution network reactive power optimized dispatching method and a power distribution network reactive power optimized dispatching system based on a virtual power plant. Each node accessed along a feed network is connected and provided with a monitoring device. The control process comprises the steps that: when a current dispatching time period of the virtual power plant begins, the monitoring devices upload real-time voltage effective values of the accessed nodes to a centralized controller of the virtual power plant; the centralized controller establishes a reactive power optimized dispatching model and solves the model to obtain reactive output set values of distributed power supplies; and the centralized controller sends the reactive output set values to the distributed power supplies, and the distributed power supplies correspondingly output reactive power to a feeder line. Through the optimized dispatching of the centralized controller, the sum of values that voltages of the nodes in the power distribution network deviate from a rated value is minimal, the total cost of carrying out reactive dispatching on the distributed power supplies is minimal, the power supply quality and reliability is improved, the auxiliary service function of the distributed power supplies is fully exerted, the service efficiency of the distributed power supplies is improved, and the development and use of the distributed power supplies are promoted.
Owner:WUHAN UNIV
Method for processing recording file of multiple-plug-in component embedded type fault information system substation
ActiveCN101588086BImprove the level of practicalityEfficient Delivery ManagementCircuit arrangementsPrimary stationStructure of Management Information
Owner:BEIJING SIFANG JIBAO AUTOMATION +1
Chalcogenide glass preparation method and preparation device
ActiveCN104556633BImprove permeabilityImprove the level of practicalityGlass furnace apparatusChalcogenide glassImpurity
Owner:CHINA BUILDING MATERIALS ACAD
A Method of Searching and Analyzing Disturbance Sources of Power System Power Oscillation Based on Scada Historical Data
InactiveCN103178521BRealize the search location functionEffective positioning analysisSpecial data processing applicationsAc network circuit arrangementsSearch analyticsDatabase interface
Owner:CHINA SOUTHERN POWER GRID COMPANY
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