10 results about "Grid friendly" patented technology

A kind of combined grid-friendly photovoltaic confluence system for 5G base station, including confluence unit, sensing unit, photovoltaic power generation system is accessed to direct current bus through confluence unit;Sensing unit collects distribution network voltage information and is transmitted to confluence unit in real time;Confluence unit according to distribution network voltage and direct current bus voltage, dynamically adjusts output power.Confluence unit includes: main power circuit, auxiliary power supply circuit, sampling circuit, drive circuit, control module, protection circuit, first wireless communication module.Sensing unit includes: single-chip microcomputer, wireless communication module, ac power grid power quality monitoring unit, auxiliary power supply.The utility model discloses a kind of combined grid-friendly photovoltaic confluence system for 5G base station, to be able to cope with 5G base station inside direct current bus overvoltage problem, simultaneously can according to the distribution network voltage of surrounding node, dynamically adjust power output, improve the stability of power supply system.

The application discloses an orderly charging control method for an electric vehicle charging station, comprising the following steps: data acquisition; constructing a double-layer Stackelberg game framework of an upper-layer aggregator and a lower-layer individual user; constructing a user bounded rationality behavior model coupled with a prospect theory, a range anxiety and individual heterogeneity; solving by using a customized SAC algorithm to generate a charging and discharging incentive price and a power instruction; executing feedback and dynamic adjustment; and realizing closed-loop regulation and control of data set updating and model iterative solving through a deviation threshold determination. The application is suitable for power spot market fluctuation environment, has strong algorithm robustness and accurate scheduling, and can improve the operation efficiency of the charging station and the power grid friendliness.

A non-transitory computer-readable medium causes a processor to detect a loss of work for a plurality of cryptocurrency mining machines. The processor then sends one or more commands that cause the plurality of cryptocurrency mining machines to enter a group holdover state.

The application relates to the technical field of damping controller design, in particular to a wind farm damping controller design method and system based on a sliding mode and predictive control. The method obtains input and output measurement data of wind farm operation, constructs a partial format dynamic linearization data model, and realizes adaptive updating of the model by using a pseudo-gradient updating mechanism; on this basis, a discrete sliding mode control item is calculated, the future operation state of the wind farm is predicted in combination with the control item, an optimal predictive control item is obtained by optimization solving; further, the discrete sliding mode control item and the optimal predictive control item are fused and optimized, a damping control output is generated, and the damping control output is injected into a reactive power modulation channel of a wind turbine generator to improve the operation stability and damping performance of the wind farm. The application realizes effective suppression of power oscillation in the grid-connected operation of the wind farm, and significantly improves the damping performance, operation stability and grid friendliness of the system.

The present application relates to the technical field of direct current micro-grid, and particularly relates to a power grid system based on a light storage building group and a charging station and an operation control method, the system comprises a power grid system based on a light storage building group and a charging station, the system comprises a cluster direct current bus, at least one sub-light storage system, a centralized energy storage device, a V2G charging station, a data acquisition device, a data processing device, a cluster control manager and a plurality of energy managers; the present application realizes deep interconnection of multiple types of energy storage and charging and discharging resources through a unified direct current bus architecture, solves the problems of insufficient coordination and large loss of the existing system; constructs a multi-mode adaptive operation control architecture, realizes dynamic switching of normal economic optimization, priority of consumption, charging guarantee, power grid interaction and emergency island, solves the defect of single existing operation mode; improves the engineering applicability and comprehensive operation benefit of the system, realizes the unification of maximum consumption of renewable energy, reliable guarantee of charging demand and friendly interaction of the power grid.

The application discloses a highway light storage direct-flexible comprehensive energy system, a control method and a readable storage medium, realizes deep fusion of traffic flow and energy flow, significantly improves charging load prediction accuracy, provides accurate feedforward information for optimal scheduling, and automatically responds to time-of-use electricity price, thereby reducing cost, avoiding excessive energy storage loss, prolonging battery service life, limiting grid-connected point power within a contract demand range, reducing demand electricity charges, improving grid friendliness, allowing flexible load to participate in regulation under comfort constraints, giving consideration to economy and user experience, effectively smoothing fast charging load impact and photovoltaic fluctuation through multi-time scale hierarchical control, guaranteeing direct-current bus voltage stability, and improving system comprehensive energy efficiency and power supply reliability.

A network construction type bidirectional inversion integrated power generation system comprises a plurality of integrated grid-connected power generation units, and each group of integrated grid-connected power generation units is mainly composed of an energy storage battery, a photovoltaic module, a network construction type bidirectional inverter and a box transformer substation. Wherein the photovoltaic module is connected to an intermediate direct current bus between a pre-stage AC-DC circuit and a post-stage DC-DC circuit of the network-forming type bidirectional inverter, and the energy storage battery is connected to the post-stage DC-DC circuit; the pre-stage AC-DC circuit is connected in parallel with the integrated grid-connected photovoltaic current collection line through a box transformer substation, so that the plurality of integrated grid-connected power generation units are connected in parallel with the integrated grid-connected photovoltaic current collection line. And the integrated grid-connected photovoltaic current collection circuit is connected in parallel to a grid-connected point bus of a photovoltaic power station through a switch circuit breaker to form a grid-forming type bidirectional inversion integrated power generation system. According to the invention, through sharing one set of network construction type bidirectional inverter equipment, a power-grid-friendly photovoltaic power station can be constructed, and the equipment investment can be greatly reduced.

The application discloses a kind of based on the air conditioner comprehensive energy system rolling optimization scheduling method and system of cold supply attribution dual-aperture accounting.Employing: (1) establish cold-heat-electricity multi-energy flow coupling model;(2) distinguish cold supply attribution electricity responsibility and purchase electricity responsibility in the cold supply service boundary, and track battery grid / photovoltaic source;(3) based on the indirect carbon emission of cold supply attribution electricity and time-varying grid emission factor accounting;(4) build day-ahead-intra-day-real-time rolling prediction correction and dynamic carbon responsibility baseline;(5) include comprehensive cost in purchase electricity, operation and maintenance, energy storage degradation, light abandonment, carbon trading and green certificate trading;(6) establish rolling optimization model with cost, cold supply attribution indirect carbon emission and cold supply attribution maximum purchase electricity power as target;(7) determine execution scheme by NSGA-III and TOPSIS.The application can avoid energy storage cross-period responsibility repeated measurement, realize the collaborative optimization of cold supply service economy, low carbon and grid friendliness.

The grid-friendly building indoor inspection group control system comprises a calculation module (10), an indoor control module (20) and a plurality of indoor inspection robots (22). The calculation module can calculate the predicted building total energy consumption at the next moment according to the obtained meteorological data and building historical operation data, and calculate the predicted operation parameters of the energy system and the air conditioning system according to the predicted building total energy consumption, so that the two systems operate according to the respective predicted operation parameters. The indoor control module can receive the inspection parameter acquisition instruction issued by the calculation module. Each indoor inspection robot can collect the actual inspection parameters of each indoor partition and upload them to the indoor control module. The indoor control module can judge the error between the actual inspection parameters and the predicted inspection parameters, and upload the actual inspection parameters to the calculation module. The calculation module can calculate the error between the predicted building total energy consumption and the actual building total energy consumption, and store the actual building total energy consumption and each actual operation parameter. It improves the efficiency of building indoor inspection.

This invention relates to the field of new energy power generation technology and discloses a distributed photovoltaic operation intelligent management and control platform. Through a cloud-edge collaborative architecture and a closed-loop design of perception, transmission, modeling, decision-making, execution, and feedback, it innovatively constructs a triple coupling model of non-uniform degradation of energy-side components, energy storage degradation, and time-of-use pricing, and a coupled identification model of dynamic shading and hot spot evolution on the safety side. With the help of LSTM-BP fusion algorithm, NSGA-III multi-objective optimization algorithm, and cross-validation mechanism, it accurately quantifies the cross-device coupling loss and dynamic risk evolution law, effectively solving the core problems in traditional management and control such as accelerated energy storage loss induced by non-uniform degradation of components and delayed hot spot treatment. It not only achieves a multi-objective dynamic balance of power generation revenue, energy storage life, safety control, and grid friendliness, but also has strong scenario adaptability and can flexibly cover diverse scenarios such as industrial and commercial, residential, and agricultural photovoltaic complementary projects.