The invention relates to a method for managing energy of a local dynamic reconfigurable system by coordinatively processing software and hardware. The conventional reconfigurable system has a high energy efficiency ratio. The method comprises the following steps of: performing task partitioning on application according to functional modules and establishing corresponding software task and hardware task; acquiring the power consumption of processing the software task and the hardware task, the time of processing the software task and the hardware task and the hardware task configuration time, and selecting the software task and the hardware task according to the principle of local energy optimum; constructing a directed acyclic graph of the application according to the relation constraint between the software task and the hardware task, and calculating the task priority level; and finally, coordinatively processing the software task and the hardware task. Due to the adoption of the method, an application example which is operated on a reconfigurable system of a dynamic part and comprises a plurality of tasks can realize effective energy management, so that the reconfigurable system of the dynamic part processes the application example and reduces energy consumption.

Method for managing energy of local dynamic reconfigurable system by coordinatively processing software and hardware

Embodiments of the present invention produce and define a relationship between local voltage and power measurements at a node of an electrical network and system conditions on a remote branch of the network. These local measurements are used to determine an optimal voltage set point at the node that, if realised by a reactive power resource, would affect the flow of reactive power or line current at one or more particular remote branches of the power system in a manner captured by the derived relationship. The change in reactive power required to obtain this voltage set point is also calculated based on local measurements.

Method for controlling power distribution

The invention provides a distributed photovoltaic automatic generating control method based on sensitivity. The control method includes the following steps: a) solving the mathematical relation of the power distribution network node voltage disturbance amount and node injection active-reactive disturbance amount through the local linearization around the distribution network stable-state operation working points, namely, analyzing the variation relation of the node voltage amplitude and node active-reactive injection through a sensitivity analytical method; b) based on the sensitivity relation of the node voltage and the node injection, selecting a node having the highest voltage sensitivity of the node active-reactive injection to the node voltage threshold-crossing or widely fluctuating nodes in a distribution network as an active-reactive adjusting node to participate in the active-reactive optimization regulation, wherein a photovoltaic power generation system which doesn't participate in the adjustment always works at the largest power tracking state; and c) establishing a distributed photovoltaic optimization model by taking the distribution network distributed photovoltaic output maximization and node voltage rated value deviation minimization as the target and taking the active-reactive output value of the active-reactive adjusting node as a solving variable.

Distributed photovoltaic automatic generating control method based on sensitivity

The invention relates to a method for evaluating reactive power adequacy based on the heuristic energy function. Aiming at the defect that evaluation of reactive power adequacy in the prior art is not global and is low in precision, the invention discloses a method for evaluating reactive power adequacy of a power system based on the heuristic energy function, which is used for evaluating reactive power adequacy limit of the power system in the system global angle of view in a highly precise and rapidly fast manner. The technical scheme of the invention is as follows: the method comprises the following steps: a. introducing critical voltage of each node in an optimized multiplier measuring system; b. establishing a heuristic energy function model of the system and computing the critical energy of each node in the system; c. computing the global critical energy of the system; and d. obtaining the reactive power adequacy limit of the load nodes according to the critical energy of each load node. The method is mainly used for evaluating the reactive power adequacy of the power system and provides basis for reactive power compensation of the system.

Method for evaluating reactive power adequacy of power system based on heuristic energy function

The invention discloses a layered and zonal control based voltage regulation method of an active power distribution network. The voltage regulation method comprises the following steps of firstly, determining an installation position of DG according to a position index L so that the maximum voltage support effect is developed by the DG; secondly, dividing voltage regulation regions of each voltage regulation device by a concept of voltage sensitivity; and finally, regulating voltage by a method of coordinative sequence control. Compared with blind determination of a DG access position, the access positions and number of the DGs are determined according to the position index, and the purpose of providing maximum voltage support by the DG can be achieved; with the adoption of a layered voltage regulation strategy, the action sequence of each voltage regulation device is determined according to VRZ where a voltage out-of-limit node is located, the action frequency of the device is reduced, and mutual influence degree among control regions is reduced, and the purpose of rapid and effective voltage regulation can be achieved; and meanwhile, the conflict action among voltage regulation devices is prevented.

Layered and zonal control based voltage regulation method of active power distribution network

The invention relates to a voltage stability domain visualization method of an electric power system, which belongs to the analyzing and controlling field of the electric power system and also belongs to a real-time display visualization technology, and is characterized in that the concept of key-node state space voltage stability domain is provided, the visualization of the voltage stability domain is realized, and the voltage stability margin index is provided so as to monitor the voltage stability in an on-line manner and ensure the safe and stable operation of an electric network, wherein, the voltage stability domain visualization method of the electric power system comprises the selection of key nodes, the selection and the adjustment of an electric generator and the calculation on the key-node state space voltage stability domain of the whole network and subdistricts as well as the voltage stability margin index. The voltage stability domain visualization method accords with the practical situation of the electric power system, effectively solves the dimensionality reduction problem of the voltage stability domain, realizes the dispatcher-friendly voltage stability domain visualization, and can effectively guide the safe and stable operation of the electric power system.

Visualization method for voltage stability domain of electric power system

The invention relates to an event coordinative control method for an advanced energy management system. The energy system EMS field of the large area power network and provincial power network of a power system of the invention is characterized by a coordinative method which simultaneously removes a plurality of AEMS events, based on the principle of firstly removing the event of a higher PRI, then removing the event of a lower PRI and the removing of the event of a lower PRI can not result in the event of a higher PRI. Besides, the method also provides a reasonable scheme which detects the event integration defined by AEMS. The invention has significance on the practicality of the AEMS and ensuring of the coordinative optimization and operation of safety-stability-economy of the power system.

Event coordination control method of advanced energy management system

The embodiment of the invention provides a method for interpolating a voltage isometric curved surface and generating a pattern, which comprises the following steps of: calculating a weight vector of each lattice of a voltage isometric curved surface original network; merging a plurality of lattices with weight vectors less than preset threshold values in the original network into a lattice groupto obtain L lattice groups; and carrying out interpolation calculation on the L lattice groups, carrying out interpolating by taking a center of the merged lattice groups as an inference, carrying out pattern generation on the interpolated lattice groups, and carrying out color lump filling on the pattern represented by the lattice groups in the pattern generation. The embodiment of the inventionalso provides a device for interpolating the voltage isometric curved surface and generating the pattern. According to the technical scheme provided in the embodiment of the invention, through the voltage isometric curved surface interpolation and pattern generation based on the lattice merging, the lattice number needing interpolation and drawing is reduced, and the speed of displaying the pattern is effectively improved.

Method and device for interpolating voltage isometric curved surface and generating pattern

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Visualization method for voltage stability domain of electric power system

Event coordination control method of advanced energy management system

Method and device for interpolating voltage isometric curved surface and generating pattern