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6926results about How to "Safe and stable operation" patented technology

Digital multimedia information transmission platform

The invention discloses a digital multimedia information transmission platform, which comprises an acquisition system, a manufacturing system, a media resource system, a management system and a release system, wherein the acquisition system consists of control equipment, outside network material receiving server and an foreign signal, studio signal and magnet tape material acquisition and collection subsystem; the manufacturing system consists of a program editing system, a program examination system, a background packing and synthesizing system and a resource manager; the media resource system consists of a media resource cataloging and searching work station, a transcoding server, a database server, a storage management and migration server and a system management working station; the management system consists of a uniform user identification system and a network management system; the release system serving as an external interface module of a multimedia center encrypts finished products in multiple formats and executes related release according to outside service demands; and the platform is an integrated production line of digital media contents and also a digital media resource comprehensive service system platform and can realize overall media resource sharing.
Owner:BEIJING INFV MEDIA TECH

Testing and verifying system appropriate for intelligent transformer substation and verifying method

ActiveCN102608450ADigital real-time simulation with high precisionHigh precisionCircuit interrupters testingSmart substationTransformer
The invention discloses a testing and verifying system appropriate for an intelligent transformer substation and a verifying method. The system comprises an upper computer and an embedded system lower computer that comprises a collecting plate, a signal plate, a data plate and four sub-plates of a synchronization plate. The signal plate, the data plate and the synchronization plate are supplied with power by an external adapter DC5V. The synchronization plate provides synchronization pulse signals to other sub-plates. Ethernet of the upper computer is connected with the signal plate of the upper computer, the intelligent transformer substation, and a process layer, an interval layer and a station layer network of a digital transformer substation by an RJ45 twisted-pair through an industrial switchboard. The testing and verifying system appropriate for the intelligent transformer substation is convenient to detect and verify the electrical capacity of current intelligent transformer substation and digital transformer substation and improves the debugging speed of the intelligent transformer substation and digital transformer substation greatly so as to provide good technical assurance to construction of the intelligent transformer substation and digital transformer substation and lay a solid foundation for safe and stable operation of the intelligent transformer substation and digital transformer substation.
Owner:江苏凌创电气自动化股份有限公司

Parallel mass data transmitting middleware of Internet of things and working method thereof

The present invention discloses parallel mass data transmitting middleware of Internet of things and a working method thereof. The invention includes: a data collection module, for forwarding data collected from different types of sensors to an application interaction module after analysis; the application interaction module, for achieving communication between the parallel mass data transmitting middleware of the Internet of things and an application system of the Internet of things, analyzing a control command of the application system of the Internet of things, transmitting to the data collection module, and further transmitting the analyzed sensor data to a data management module; the data management module, for performing data screening, fusion, conversion on the mass data analyzed by the application interaction module, and finally storing the calculated data into the application system of the Internet of things; and a developing regulation module, for setting out a protocol plug-in regulation, a communication channel plug-in regulation, a service field metadata plug-in regulation, etc. The present invention can meet high concurrency access and management of the large scale sensing apparatus of different application fields, various communication channels and various communication protocols.
Owner:SHANDONG UNIV +1

Planning big data management and control system of smart power distribution network and method

ActiveCN105574652ALaying a solid foundation for planning and design informatizationEffectively integrate planning and design data resourcesResourcesInformation technology support systemTime informationStatistical analysis
The invention discloses a planning big data management and control system of a smart power distribution network and a method. The system comprises that a data layer constructs a global power network planning model; a basic data dictionary containing power network devices, graph standards and power network operation information is built; an application layer carries out statistic analysis and real time load actual measurement analysis to the power network devices and power network operation states in a set region; automatic filling of power network load data graphs, intelligent operation of planning data, intelligent verification of the planning data and intelligent statistics and summary of the planning data are realized; a service layer selects planning power network schemes; a display layer carries out centralized display, share and information issue to the planning and design achievement. According to the system and the method of the invention, through taking multi-source massive data such as basic geographic information, power network space and attribute thematic information and power network operation real time information as cores, planning and design data resources in the system are effectively integrated, a power network planning and design integrated information platform is built, and power network planning and design information-based foundation is tamped.
Owner:RES INST OF ECONOMICS & TECH STATE GRID SHANDONG ELECTRIC POWER +1

Multi-agent optimized coordination control method of electric network

InactiveCN101777769ARealize intelligent unmanned schedulingGuaranteed economic dispatchAc networks with different sources same frequencyMicrogridPower grid
The invention relates to a multi-agent optimized coordination control method of an electric network in the technical field of electric networks, which comprises the following steps of: collecting local electric information, transmitting the local electric information to a central agent of a microgrid and issuing a control command by a local electric network to the central agent of the microgrid simultaneously; computing by a grid technology; issuing a new control command by the central agent of the microgrid and transmitting the information to a regulation agent of the local electric network by a network line simultaneously; receiving a dispatching instruction of the central agent of the microgrid by the agent of each element and carrying out logical judgment on a result executing these dispatching commands according to the collected local electric information; and meanwhile, optimizing the electric network within a control range by the regulation agent of the local electric network and controlling a computer to carry out parallel computation by the grid technology. The invention is suitable for carrying out optimal dispatching on a distributed energy resource of an intelligent electric network, can control each power supply by an optimization scheme, also enhances the operational processing time greatly and ensures that the intelligent electric network runs safely, stably and economically.
Owner:SHANGHAI JIAO TONG UNIV

Processing method for reducing and recycling organic waste water and processing system

The invention provides a processing method for reducing and recycling organic waste water. The method comprises steps: (1) pre-treating waste water to obtain pre-treated out-water; (2) treating the out-water obtained from the step (1) through solid-liquid separation; (3) nano-filtering the out-water obtained from step (2); (4) treating nano-filtered concentrated water obtained from the step (3) to obtain out-water subjected concentrated water nano-filtering, returning to the step (3) for mixing the out-water subjected to concentrated water nano-filtering with the out-water subjected to solid-liquid separation, and performing nano-filtering; (5) performing first reverse osmosis treatment on out-water obtained from the step (3) through nano-filtering; (6) performing second reverse osmosis treatment on concentrated water obtained from the step (5) through first reverse osmosis treatment; and (7) evaporating and crystallizing a concentrated liquid obtained from the step (6) through second reverse osmosis treatment in order to obtain crystallized salt and evaporated concentrated water. The invention further provides a processing system of the method. Through the method and system, waste water is truly reduced and recycled.
Owner:DATANG INT CHEM TECH RESINST

Wind power optimal scheduling method based on power forecast

The invention provides a wind power optimizing scheduling method based on power forecast, which is applied to a power scheduling operation schedule solution containing wind power. In the method, the power forecast curve of a wind power station are utilized; the peak regulation capacity and the safe and stable limit of a system are calculated, so that scheduling of total output of the wind power within the scheduling range is divided into restricted time interval scheduling and non-restricted time interval scheduling; for the non-restricted time interval scheduling, the error scope of the forecast power generation is considered based on a forecast power generation curve; and for the restricted time interval scheduling, wind power forecast errors are considered based on the restriction of the aggregate limit of the wind power stations and the forecast power generation output of each wind power station, thus optimizing power generation power limit value allocation of each wind power station, so that the system can maximally digest the wind power under the condition of meeting the requirement of safe and stable operation. A wind power scheduling curve is executed by the power generation of the wind power station so as to strength safety and stability of the power grid operation, intensify the digestion capacity of the wind power and maximally utilize the wind power.
Owner:CHINA ELECTRIC POWER RES INST +1

High-voltage transmission line/ tower long-distance video on-line monitoring system

The invention discloses a high-voltage transmission line/ tower remote video on-line monitoring system which comprises a multifunctional monitoring base station, a wireless communication network and a remote monitoring center; the multifunctional monitoring base station is connected with the remote monitoring center through the wireless communication network and is arranged on the tower of the high voltage transmission line; the wireless communication network supports the video communication; the multifunctional monitoring base station is used for acquiring the spot scene information, and sending the spot scene information to the remote monitoring center through the wireless communication network; and the spot scene information comprises the video/ image, audio frequency, spot monitoring data as well as early warning/ warning message of the high-voltage transmission line/ tower. In the invention the high-voltage transmission line/ tower spot scene is transmitted to the remote monitoring center through the wireless communication network synchronization, thus the monitoring center operator can grasp the running state of the high-voltage transmission line/tower timely and accurately, and the comprehensive monitoring of the high-voltage transmission line/ tower is realized.
Owner:BEIJING JIAOTONG UNIV +1

Control method of battery energy storage system for peak clipping and valley filling in distribution network

ActiveCN103311942ASafe and stable operationMeet the requirements of peak shaving and valley fillingFlexible AC transmissionAc network load balancingSystem safetyAutomotive engineering
The invention discloses a control method of a battery energy storage system for peak clipping and valley filling in a distribution network. The control method comprises the following steps: obtaining a daily load curve on a predicted day according to a load predicating method, and computing the peak value and valley value of the daily load curve; setting a synthesis output valley value after participation of the energy storage system, and setting an initial value of synthesis output peak value; comparing predicated daily load data with the synthesis output valley value and the initial value of synthesis output peak value which have been set, and judging as follows: if the load data is smaller than the synthesis output valley value, charging the energy storage system to complete valley filling; and if the load data is larger than the initial value of synthesis output peak value, discharging the energy storage system to complete peak clipping, so that the synthesis output after energy storage adjustment reaches to the initial value of synthesis output peak value. At the peak and valley moments according to the load curve, the energy storage system is set to be charged once and discharged twice within one day, the requirement of peak clipping and valley filling can be achieved, and charging and discharging balance every day can be kept, so that the service life of the battery is prolonged to the maximum. Moreover, the control method also can ensure safe and stable operation of the energy storage system.
Owner:STATE GRID CORP OF CHINA +2

A grounding fault arc extinguishing method and a device based on a controllable voltage source

The invention discloses a grounding fault arc extinguishing method and a device based on a controllable voltage source. The method comprises the following steps: continuously measuring three-phase voltage, zero-sequence current and zero-sequence voltage; When the fault is detected, the fault phase is judged according to the three-phase voltage. The voltage, line-to-ground capacitance, leakage resistance, fault grounding resistance, arc suppression coil inductance, resistance and internal resistance of controllable voltage source in normal operation of fault phase are obtained, and the output voltage of controllable voltage source is calculated. The output voltage of the controllable voltage source is output by SPWM or SVPWM modulation algorithm. By connecting the voltage source, the present application is easier to control and can effectively compensate the fault current and extinguish the arc at the fault point without considering the problem that the inductance parameter of the arc suppression coil and the capacitance of the line to ground are close to the power frequency resonance. The invention calculates the phase and amplitude of the output voltage, realizes the current extinction at the fault point by controlling the amplitude and phase of the controllable voltage source, and ensures the safe and stable operation of the power network and the failure point not to cause fire and other accidents.
Owner:YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST

Method for achieve automatic driving curve generation between stations during operation by automatic train driving system

InactiveCN102442323AOptimally run the automatic driving curveRun on timeLocomotivesWork performanceMonitoring system
The present invention relates to a method for achieve automatic driving curve generation between stations during operation by an automatic train driving system. The method comprises that: the system real timely acquires operation information of an automatic train monitoring system, train parameter information and track information of a track database; the driving curve information at each operation stage between the stations is real timely and adaptively calculated; the key point information at each operation stage between the stations is extracted and recorded according to the driving curve information; the best automatic driving curve of the train between the stations during the operation is real timely generated. With adopting the method for achieve the automatic driving curve generation between the stations during the operation by the automatic train driving system, a plurality of disadvantages of the train in the automatic driving process are effectively overcome; the advantages of higher comfort, good energy saving effect, high parking precision, easy adjustment, stable and reliable work performance, and wide application range are provided; the purposes of punctual operation, energy saving operation, high comfort operation, safe and smooth operation of the train are achieved, and the operation requirements of the CBTC system are completely met.
Owner:NO 32 RES INST OF CHINA ELECTRONICS TECH GRP

Short-term wind power prediction method based on integrated empirical mode decomposition and deep belief network

The invention discloses a short-term wind power prediction method based on integrated empirical mode decomposition and a deep belief network. The short-term wind power prediction method comprises the steps of: decomposing an original wind power sequence into a series of intrinsic mode functions with different features by adopting integrated empirical mode decomposition, calculating sample entropy of the original wind power sequence and the intrinsic mode functions, combining the intrinsic mode functions with similar sample entropy values into a new sequence, and forming a random component, a detail component and a trend component; selecting an input variable set by adopting a partial autocorrelation function; constructing a training sample set according to the input variable set of each component; and establishing a deep belief network short-term wind power prediction model for each component, and superposing prediction results of the components, so as to obtain a final short-term wind power predicted value. The short-term wind power prediction method provided by the invention effectively improves the short-term wind power prediction precision, and can effectively solve the wind power prediction problem of the electric power system, so as to provide more reliable guarantee for large-scale wind power integration.
Owner:STATE GRID JIANGSU ELECTRIC POWER CO ELECTRIC POWER RES INST +3
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