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49results about How to "Improve asset utilization" patented technology

Intelligent asset management method

The invention discloses an intelligent asset management method. The intelligent asset management method utilizes an intelligent asset management system which provides various kinds of data service interface customization for third party integration, the intelligent asset management system services as an open platform, can realize efficient butt joint with other platforms, can be integrated by higher-level management systems, and can realize data interconnection and intercommunication with a power grid comprehensive automation system according to a specified specifications. The intelligent asset management method mainly comprises warehouse asset management, on-shelf asset management, office asset management and asset maintenance information management. The warehouse asset management comprises the steps of: a, warehousing; b, tag manufacturing; and c, delivering from a warehouse. The on-shelf asset management comprises the steps of: a, asset addition; b, position change; c, and asset removal. The office asset management comprises the steps of: a, office asset reception; and b, office asset inventory. The asset maintenance information management comprises systematic management of various kinds of maintenance contracts, including various assets covered by the maintenance contracts, manufacturers corresponding to maintenance equipment, contact information and the like.
Owner:STATE GRID CORP OF CHINA +2

Power distribution network optimization method adapting to power distribution network high capacity load transfer

The invention relates to a power distribution network optimization method adapting to power distribution network high capacity load transfer, comprising steps of analyzing a load fluctuation curve of a regional power distribution network and a complementary load characteristic curve of the regional power distribution network and an adjacent power distribution network of, obtaining the two characteristics of the power distribution network high capacity load transfer which are that the load fluctuation of the regional power distribution network is relatively big and the complementarity of the adjuacent regional power distribution network is strong, determining the characteristics satisfied by the characteristics of the power distribution network load, if two above characteristics are both satisfied, adopting a spatial transfer optimization method to optimize, if only the characteristic that the load fluctuation of the regional power distribution is big is satisfied, adopting the time transfer optimization to optimize. The power distribution network optimization method adapting to power distribution network high capacity load transfer groups the power distribution network high capacity load transfer into two categories, enables the distribution of the load to be more balance, improves the power distribution network planning and the operation level, has the directive significance, and improves the capability of the power distribution network to deal with the high capacity load transfer.
Owner:STATE GRID TIANJIN ELECTRIC POWER +2

Muiti-stage active distribution network self-healing planning method based on bi-level planning

ActiveCN105405067AFully consider the investment costFully consider the operating economyData processing applicationsInformation technology support systemSelf-healingOptimal decision
The present invention discloses a muiti-stage active distribution network self-healing planning method based on bi-level planning. The method comprises the following steps: carrying out investigation and analysis on a planned region, and determining a planning target and a decision variable; listing objective functions according to the planning target and the decision variable, wherein, an external planning objective function is a net present value, and an internal planning objective function comprises a DG reduction amount and an active load reduction amount; listing an external planning bound term and an internal planning bound term; generating an active distribution network self-healing planning model according to the internal planning objective function, the external planning objective function and the related constraint terms; and optimizing the active distribution network self-healing planning model and then carrying out calculation to obtain an optimal decision. According to the muiti-stage active distribution network self-healing planning method based on bi-level planning, which is disclosed by the present invention, long-term investment cost and short-term operating economy of an active distribution network are fully considered, thereby improving asset utilization rates of an energy storage system and a line in a grid to the greatest extent.
Owner:ECONOMIC TECH RES INST OF STATE GRID ANHUI ELECTRIC POWER +1

Big consumer power supply access decision-making method considering load characteristic

The invention relates to a big consumer power supply access decision-making method considering load characteristic. The big consumer power supply access decision-making method comprises the steps of defining installation reporting parameters of a big consumer according to electrical equipment information provided in installation reporting of the big consumer; forming an excavating load sample dataon the basis of normalization by virtue of the access big consumer historical power utilization data; clustering the load sample data into an L cluster through a fuzzy C mean value clustering algorithm, wherein the clustering center is the big consumer load characteristic library, and determining the type of the sample data according to the maximum membership principle; defining the load characteristic index according to the installation reporting parameters provided by the big consumer, and processing the load sample data according to the load characteristic index to form a training data set; based on the training data set, excavating a load pattern recognition rule of the big consumer through a classification and regression tree (CART) algorithm; and inputting a load recognition resultinto a big consumer power supply access combination and optimization model, and obtaining a power supply access optimization strategy through optimizing.
Owner:TIANJIN UNIV

Detection monitoring system of power transmission and transformation device of power distribution network

The invention discloses a detection monitoring system of a power transmission and transformation device of a power distribution network. The detection monitoring system comprises a centralized controlSCADA system, a relay protection and fault information management system and a power transmission circuit fault range finding system. Information interaction is performed between a safety monitoringsystem and an asset management system of the power transmission and transformation device. According to the invention, perception of panoramic states of a 500kV power grid is achieved; an operator iscapable of ensuring smooth carrying out of services of operation, maintenance and repairing of the 500kV power transmission and transformation device according to required remote metering and remote signaling information and relay protection and fault recording information. A monitoring center automation system which takes a public information platform as a core comprises subsystems of the centralized control SCADA system, the relay protection and fault information management system and the power transmission circuit fault range finding system, and is capable of interacting with a provincial dispatching EMS system, thereby achieving rapid initialization of automation of the centralized control center. The detection monitoring system interacts with the asset management system and an operation management system, and supports optimized asset management and analysis application.
Owner:STATE GRID CORP OF CHINA +1

Calculation method for power cable emergency load carrying capacity

The invention discloses a calculation method for power cable emergency load carrying capacity. The calculation method includes the following steps that 1, alternating-current resistor R, environment temperature t0, conductor temperature T1, insulating layer temperature Tn-3, buffering strip temperature Tn-2, aluminum sheath temperature Tn-1 and outer sheath temperature Tn when a circuit fails in a power cable are calculated, the alternating-current resistor R is calculated through an alternating-current resistor formula, the environment temperature t0 is obtained through online monitoring, the conductor temperature T1, the insulating layer temperature Tn-3, the buffering strip temperature Tn-2, the aluminum sheath temperature Tn-1 and the outer sheath temperature Tn are obtained through calculation according to a cable transient state thermal circuit model, and the data is recorded; 2, thermal resistance Rn and thermal capacity from the outer surface of the cable outer sheath to the soil temperature stable point are calculated through an iteration method according to the recorded data. The power grid dispatching under emergency loads of power grid dispatching personnel is provided, it can be avoided that the cable is damaged by loads exceeding the power grid dispatching, and unnecessary rush-repairing power outage can be avoided, which is beneficial for increasing the use ratio of the cable line.
Owner:HUATIAN POWER TECH

Island microgrid system

The invention discloses an island microgrid system. According to the technical scheme, the island microgrid system is characterized in that the island microgrid system comprises a data storage module,a data processing module, an operation prediction module and a decision and control module, wherein the data storage module is used to detect and store the state of charge and charge-discharge depthof the battery pack; the data processing module is used for converting the state of charge of the battery pack and the feedback charge-discharge depth state into economic cost and evaluating the economic cost; and the operation prediction module is used for converting a multi-objective problem into a single objective for optimization solution and optimizing by taking the economic cost, the tie line load rate and the tie line power variance as optimization objectives; and the decision and control module is used for adjusting the flow power of the power tie line, improving the load rate of the tie line and reducing the power variance of the tie line under the condition of avoiding frequent charging and discharging of stored energy, so that the utilization rate of the tie line is improved. The asset utilization rate and the energy storage life of the tie line can be optimized. And an extreme condition under single-target optimization is avoided.
Owner:WENZHOU ELECTRIC POWER DESIGN +1

Configuration scheme optimization method and system for power distribution network

The invention provides a configuration scheme optimization method and system for a power distribution network. The method comprises the following steps: establishing a power distribution network costbenefit model; establishing a power distribution network reliability benefit model; obtaining a configuration scheme set of the power distribution network based on the configuration schemes of the grid structure, power distribution automation and hot-line work; performing reliability analysis on the configuration scheme set of the power distribution network by using a sequential Monte Carlo and fault consequence analysis method based on the reliability benefit model of the power distribution network to obtain a reliability index; calculating the whole life cycle cost of a configuration schemeset of the power distribution network based on the power distribution network cost benefit model; and according to the reliability index and the full life cycle cost of the configuration scheme set, determining a power distribution network configuration scheme which satisfies the reliability index and has the minimum full life cycle cost. According to the invention, the scheme with the lowest fulllife cycle cost meeting the reliability index can be obtained, the asset utilization rate is improved, the enterprise production cost is reduced, and the power distribution network operation has highfeasibility.
Owner:STATE GRID ECONOMIC TECH RES INST CO +2

Method and system for user side adjustable resources to participate in peak regulation auxiliary service

PendingCN114462747AAlleviate the peak-to-valley differenceReduce transaction riskResourcesPower gridOperations research
The invention discloses a method and a system for user-side adjustable resources to participate in peak regulation auxiliary service. The method comprises the following steps: acquiring configuration information, power consumption information and cost information of all adjustable resources of a single user; calculating the adjustment cost of each adjustable resource by using a predetermined calculation model; determining a load prediction value of each adjustable resource on a prediction day based on a clustering algorithm and user-side historical electrical load data; and quantity price declaration is carried out by taking user benefit maximization as a target. The method has the advantages that the grouping load prediction of the adjustable resources is carried out by combining the historical electricity load data of the user side and the clustering algorithm, the operation cost of the adjustable resources is analyzed based on the adjustable resource configuration, the electricity information and the cost information, and the load prediction of the adjustable resources is realized in a declaration mode based on the load prediction result of the adjustable resources and the cost analysis result. The method assists the user side adjustable resources in participating in the peak regulation auxiliary service, can relieve the peak-valley difference, reduces the transaction risk, and improves the utilization rate of power grid assets.
Owner:NARI TECH CO LTD +5
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