118 results about "Electrical engineering technology" patented technology

The invention discloses an amorphous alloy motor operation efficiency monitoring method and system based on artificial intelligence, and relates to the technical field of electrical engineering, the system is composed of a plurality of functional modules, and the system comprises a multi-dimensional data acquisition module for acquiring motor operation multi-field coupling parameters, environment condition data and motor operation multi-field coupling parameters; comprise electrical coupling parameters, thermal coupling parameters and mechanical coupling parameters; the edge calculation module is used for preprocessing motor operation multi-field coupling parameters and environment working condition data, introducing multi-field coupling features and extracting multi-dimensional features and multi-sensor time sequence features; and the cloud artificial intelligence analysis module constructs a dynamic mapping model based on historical motor operation data by adopting an improved LSTM and Attention mechanism and fusing a Transform architecture, inputs multi-dimensional features into the dynamic mapping model, outputs an energy efficiency level, and fuses multi-sensor time sequence features by using a graph neural network based on the energy efficiency level.

The invention belongs to the technical field of electrical engineering, and particularly relates to a dynamic intelligent control method and system for a variable-frequency speed regulation system, and the method comprises the steps: in the offline stage of the system, automatically setting the total rotational inertia and the optimal compensation gain of the system through injecting a test torque and monitoring critical oscillation; in the online operation stage, active electromagnetic power is calculated by collecting bus voltage and current, theoretical inertia power is calculated by combining mechanical angular velocity, and the difference value of the active electromagnetic power and the theoretical inertia power is used as a disturbance power observation value after low-pass filtering; a singular-point-free equivalent angular velocity is constructed by using a set minimum effective rotating speed threshold value, disturbance power is converted into disturbance torque, and the zero-division singular problem of a low-speed region is effectively avoided; and calculating a compensation current, carrying out dynamic amplitude limiting according to the residual current margin of the frequency converter, and superposing the residual current to a speed ring for output. According to the method, the problem of calculation divergence of traditional power disturbance observation in a low-speed region is solved, and disturbance suppression and robust control in a full-speed region are realized on the premise of ensuring system safety.

The invention belongs to the technical field of electrical engineering, and particularly relates to a power distribution network simulation deduction and load regulation and control method based on Internet of Things data, which comprises the steps of acquiring multi-source Internet of Things data and performing timestamp checking, topology consistency deduction and cross-source error reforming to form a standardized power grid state data set; constructing a cross-scale operation feature based on the data set, generating a panoramic operation situation through topology and time sequence alignment, inputting the panoramic operation situation into a reinforcement learning agent, executing exploration in a simulation environment to generate an extreme compound fault scene, extracting risk severity from the scene, constructing a risk evolution path, and obtaining a risk evolution result; the method comprises the steps of identifying key induction nodes and easy-to-diffuse links, constructing a defensive load regulation and control strategy oriented to a causal chain, performing multi-working-condition simulation verification on the strategy, constructing an optimized regulation and control strategy set based on simulation deviation, and driving a power distribution network control system to execute load regulation and control actions so as to improve system stability and risk suppression capability.

The application relates to the technical field of electrical engineering, in particular to an intelligent power measuring device for generator control, which comprises a generator, a power detector is arranged on one side of the generator, a connecting hole is formed in one side of the power detector, a connecting line is fixedly connected to the generator, the other end of the connecting line is used for being connected with the power detector, a connecting column is fixedly connected to the inside of the power detector, the connecting column is located on one side of the connecting hole, a rotating plate is sleeved on the connecting column, one end of the rotating plate is rotationally connected with the connecting column, the other end of the rotating plate is fixedly connected with a fixing column, and the fixing column is used for winding the connecting line on the connecting column; when the connecting line on the generator is connected with the power detector, the connecting line can be automatically wound on the connecting column under the action of the fixing column.

The application discloses a kind of distributed photovoltaic in-situ consumption power distribution network hierarchical collaborative operation control method, it is related to electrical engineering technical field, including for the power consumption problem of a large number of distributed photovoltaic and flexible resource in power distribution area, based on day-ahead-intra-day centralized optimization strategy and hierarchical-zoning coordinated control, flexible resource and distributed photovoltaic in substation area are globally scheduled, and the optimization result is applied to real-time control stage, from top to bottom for the distribution of optimized scheduling instruction is allocated, the optimal operation of in-situ consumption of distributed photovoltaic in area is realized.Therefore, using the above-mentioned distributed photovoltaic in-situ consumption power distribution network hierarchical collaborative operation control method, new type power system under complex operation mode can be accurately analyzed, the operation scheme of flexible resource and distributed power supply is optimized by collaborative optimization, the photovoltaic consumption capacity of power distribution network is improved, and the operation economy of new type power system is improved.

The application discloses a space charge distribution calculation method based on tunneling effect and hole extraction restriction, and belongs to the technical field of electrical engineering, and comprises the following steps: a one-dimensional finite element structure model is established, taking polymer material as a main body and electrodes as boundaries; a periodic polarity reversal voltage is applied at the electrode boundary by coupling Maxwell electromagnetic field theory and Nernst-Planck theory, and a recombination carrier injection model and a hole extraction restricted boundary condition are introduced, so that a polymer material space charge distribution model based on tunneling effect and hole extraction restriction mechanism is obtained; and the polymer material space charge distribution model is solved to obtain the space charge distribution and electric field distortion law of the polymer material under the conditions of strong electric field and polarity reversal. The method solves the problem that the existing space charge model cannot effectively depict the tunneling emission and hole extraction restriction effect at the electrode interface, and provides important support for the polymer insulation aging research under the conditions of strong electric field and polarity reversal.

The invention relates to the technical field of electrical engineering, in particular to a power distribution power cabinet and a using method thereof.The power distribution power cabinet comprises a base assembly, the base assembly is used for being connected with a power cabinet body so that the power cabinet body can be connected with an external power installation area through the base assembly, and the bottom of a protective film is connected with the outer edge of the base assembly; and the protective film wraps the power cabinet main body. In rainstorm weather, the unfolding height of the protective film is higher than the external water level, water is isolated outside and does not affect the power cabinet body, when the water level is high, the power cabinet body is integrally wrapped by the protective film, and an opening in the upper end of the protective film is closed through the control assembly. In this way, the protective film can wrap the power cabinet body in a closed state, and the protective film can be inflated, so that the impact force of solids in water flow on the power cabinet body is reduced.

The application discloses a T-shaped microstrip line capable of suppressing far-end crosstalk for specific frequencies and a design method thereof, and belongs to the technical field of electrical equipment and electrical engineering. The application mainly comprises the following contents: 1) taking parallel uniform microstrip lines as a starting point, calculating the parameters of the PCB parallel microstrip lines, and obtaining the line width, line length and line thickness of the PCB high-density layout; 2) a new microstrip line structure, i.e. a T-shaped microstrip line, is provided, a T-shaped protrusion is added to the inside of the parallel uniform microstrip line, the structural parameters of the T-shaped protrusion are a T-shaped short side a, a T-shaped long side b, a T-shaped pair length D and a number n, and the influence of different structural parameters on the far-end crosstalk is analyzed from the frequency domain; 3) the structural parameters are optimized for specific frequencies, the optimal T-shaped microstrip line is obtained through time domain and frequency domain simulation, and the crosstalk suppression effect is enhanced compared with other types of microstrip lines. The application has the advantages of low far-end crosstalk at specific frequencies, clear design method and high wiring density.

The application discloses a transformer rectifier-based fault detection method and system, and relates to the technical field of electrical engineering, comprising the following steps: S001, a cross-frequency steady-state to dynamic continuous observation baseline is established under different frequency excitation conditions, a magnetic communication signal, a current signal and a temperature rise signal are synchronously collected, and a micro-amplitude polarization marker is injected, which is used for tracking energy flow and constructing a multi-parameter coupling graph with time evolution characteristics; S002, based on the multi-parameter coupling graph, a causal coherence decomposition is performed, the transient bending rate deviation of the magnetic hysteresis loop under frequency change is identified, the energy imbalance parameter generated by the magnetic flux response lag is extracted, and the potential instability area in the feedback link is calibrated. The application realizes multi-parameter coupling graph construction and causal instability identification, predicts energy abnormalities through counterfactual playback and frequency replacement, realizes rapid electromagnetic recoil extinction combined with reversible time grid and conjugate injection, and improves system safety and self-healing ability.

The utility model provides automatic drying device relates to electrical engineering technical field, include: drying cabinet, drying cabinet front side is hinged to be rotatory and is installed with two cabinet doors, drying cabinet top right side is fixed with a air intake pipe, and air intake pipe bottom is connected with a group of article support pipe, and article support pipe bottom is connected with a group of air outlet pipe, drying cabinet bottom inboard is fixed with a group of lower bracket, drying cabinet top left side is fixed with a air outlet pipe, and drying cabinet top inboard is fixed with an air outlet cover, and air outlet cover and air outlet pipe bottom end intercommunication. The device can guarantee that the article center position is heated and dries and makes moisture to scatter outward, and drying is more uniform.

The utility model discloses a power distribution module, which relates to the technical field of electrical engineering, and comprises at least two power distribution units and a first busbar, the at least two power distribution units are stacked and arranged at intervals, each power distribution unit is provided with a confluence terminal, the confluence terminal is bent to form a connecting part, and the connecting part is connected with the first busbar. The first busbar is connected with the connecting part of one confluence terminal of each power distribution unit through a connecting piece, and the connecting piece and the relays on the power distribution units are arranged in a staggered manner; in the technical scheme provided by the utility model, the connecting part of the confluence terminal and the relay in the power distribution unit are arranged in a staggered manner along the stacking direction of the power distribution unit, so that the connecting piece can be ensured not to interfere with the relay even if the connecting piece penetrates out of the connecting part in the installation process, thereby avoiding the puncture of the relay and causing potential safety hazards. By bending the confluence terminal, a part of the confluence terminal is located below the circuit board, so that the rationality of the structure of the device is ensured.

The invention discloses a high-precision detection device for electrical engineering, and relates to the technical field of electrical engineering, the high-precision detection device comprises a machine body and a magnetic suction connecting assembly, the magnetic suction connecting assembly is installed in the middle of the machine body, and the magnetic suction connecting assembly comprises a sleeve embedded in one side of the machine body. According to the high-precision detection device for the electrical engineering, through a mechanical structure of lifting of the lifting rod, fixing of the electromagnet and driving adjustment of multiple motors, a detection tool is integrated on the overturning plate and the wing plate which can be automatically adjusted, manual hand holding or contact of a detector is not needed, manual alignment is replaced by automatic adsorption and fixing of the electromagnet, and the detection efficiency is improved. And the lead screw sliding block mechanism automatically adjusts detection parameters, so that the core detection action is completed by replacing a person with a machine, and the dependence on manual operation is fundamentally eliminated.

The utility model provides a state detection device for a power distribution cabinet, and belongs to the technical field of electrical engineering. According to the structure, a high-frequency current transformer, an ultrasonic sensor, an ultrahigh-frequency sensor and a signal amplifier are arranged on a main PCB, the ultrasonic sensor is electrically connected with the high-frequency current transformer and the ultrahigh-frequency sensor in sequence, the ultrahigh-frequency sensor is electrically connected with the signal amplifier, a main inserting rod and a main mounting plate are arranged on the main PCB, and the signal amplifier is electrically connected with the main inserting rod. The main insertion rod is in insertion connection with the machine body, the main installation plate is fixedly connected with the machine body, the data exchange module comprises an auxiliary PCB, the auxiliary PCB is provided with a wifi module, a controller, a data line interface and a memory card slot, and the wifi module, the data line interface and the memory card slot are electrically connected with the controller. The power distribution cabinet partial discharge signal acquisition device has stronger acquisition capability for partial discharge signals of a power distribution cabinet, can be interconnected and intercommunicated with a remote control end in real time, and is compact in structure and stable and reliable in operation.

The application discloses a kind of power grid peak shaving flexibility maximization's peak shaving generator start-up scheme selection method and system, belong to electric power and electrical engineering technical field.The present application includes: determining the relevant basic conditions of power grid;Based on the relevant basic conditions of the power grid, determine the total peak shaving generator start-up scheme of power grid;According to daily load characteristic curve, select the most flexible peak shaving generator start-up scheme in the total peak shaving generator start-up scheme.The peak shaving generator start-up scheme of peak shaving flexibility maximization that the present application can select, and can satisfy the basic peak shaving demand of power grid daily load characteristic curve and power grid stable operation requirement, when the load fluctuation that exceeds daily load characteristic curve appears in actual operation of power grid, since the margin of upward adjustment capacity and downward adjustment capacity is considered simultaneously when quantifying the peak shaving flexibility of peak shaving generator start-up scheme, the selected peak shaving generator start-up scheme also has the best power grid operation adaptability.

The invention discloses a method for a friendly power station of a new energy electrothermal coupling system to participate in electric power market simulation and benefit evaluation, and belongs to the technical field of electrical engineering. And a simulation model of the friendly power station of the new energy electrothermal coupling system is constructed, the simulation model is comprehensively incorporated into electricity market electricity price signals, system peak power supply function requirements and detailed operation constraints of all equipment, and accurate simulation of the operation process of the power station is achieved. On the basis, the benefit evaluation method is provided, the investment and operation and maintenance cost of various devices of the power station, the income of participating in the spot market and the auxiliary service market and the peak capacity compensation income are comprehensively considered, and an evaluation system covering the whole life cycle of the power station is constructed. The method provides key technical support for planning, operation strategy making and economic benefit evaluation of the new energy electrothermal coupling system friendly power station in a power market environment.

The utility model discloses a threading construction device for building electrical engineering, and relates to the technical field of building electrical engineering, in particular to a threading construction device for building electrical engineering, which comprises a gun barrel, a wire inlet is arranged at the bottom of the middle end of the gun barrel, and a coil wheel is fixedly connected below the wire inlet. And the interior of the coil wheel is fixedly connected with a rotating shaft. According to the threading construction device for the building electrical engineering, through cooperative arrangement of a main wind shield and an auxiliary wind shield, in the using process, the main wind shield and the auxiliary wind shield can rotate through a main wind shield connecting block and an auxiliary wind shield connecting block, so that threading can be conducted on pipelines with different diameters under the thrust of gas pumped into an air pump; according to the device, the application range of the device is widened, meanwhile, the structure is simple, and the purposes that threading work can be conveniently and rapidly conducted on light-weight cables, meanwhile, threading can be conducted on pipelines with different diameters, and the practicability of the device is improved are achieved.

The invention relates to the technical field of electrical engineering, and discloses a cable bridge cutting device for electrical engineering installation, which comprises a workbench, a frame is fixedly connected to the top of the workbench, and a pressing mechanism is arranged on the frame. The pressing mechanism comprises a first driving motor, a first threaded rod, a first threaded sleeve, a pressing plate, a first magnet block, a first non-slip mat, a groove, a second magnet block and a second non-slip mat, and the first driving motor is fixedly mounted at the top of the frame. According to the bridge cutting device, the bottom of the inner wall of a bridge can be pressed by arranging a first driving motor, a first threaded rod, a first threaded sleeve and a pressing plate, so that the stability of the bridge in the cutting process is improved, a bottom plate of the bridge can be further clamped through magnetism between a first magnet block and a second magnet block by arranging the first magnet block and the second magnet block, and the cutting efficiency of the bridge is improved. And the friction force of the bridge frame can be increased by arranging the first non-slip mat and the second non-slip mat, so that the stability of the bridge frame during cutting is further improved.

The invention discloses a multi-new energy base output joint scene generation method and device, and belongs to the technical field of electrical engineering, and the method comprises the steps: inputting the historical output data of a plurality of new energy bases into an SARIMA model to obtain output prediction data, and accurately capturing the time sequence characteristics of the new energy output. Furthermore, an output joint scene set of the multiple new energy bases is obtained by using an SARIMA-Copula model, the spatial-temporal correlation among the outputs of the multiple bases can be described, and the provided model can realize time sequence-space joint modeling, so that a more accurate output joint scene of the multiple new energy bases is obtained. The method is suitable for new energy power system planning, the simulation precision of multi-base joint output and the new energy consumption capability can be improved, the energy storage configuration and the power grid expansion scheme are optimized, more accurate output prediction is provided for new energy power generators, and the robustness of scheduling decision is enhanced.

The utility model provides an integrated frequency conversion speed regulation control box, which relates to the technical field of electrical engineering, and comprises a rear cover and a front cover covering the rear cover, the front cover and the rear cover enclose to form an accommodating space for accommodating an electrical assembly, and the electrical assembly comprises a liquid crystal display, a touch panel, an adapter plate, a mainboard, a speed regulation circuit and a control circuit. A touch drive circuit and a liquid crystal drive circuit are integrated on the adapter plate, the speed regulation circuit and the control circuit are arranged on the mainboard, the touch panel is connected with the input end of the control circuit through the touch drive circuit, and the output end of the control circuit is connected with the input end of the speed regulation circuit. The output end of the speed regulation circuit is connected with the liquid crystal display through the liquid crystal driving circuit. The device effectively improves the system response speed and is high in reliability.

The utility model relates to the technical field of electrical engineering, and discloses a trunking comprising an upper cover and a lower shell, two sides of the bottom of the upper cover are provided with buckles, two ends of the top of the lower shell are provided with clamping grooves, the buckles are movably connected in the clamping grooves, the bottom end in the lower shell is fixedly provided with a thin trunking, and the left and right sides in the lower shell are fixedly provided with thick trunking. A splicing groove is formed in the front face of the lower shell, an end cover is movably connected to the front face of the lower shell in a clamped mode, a fixing block is fixedly installed on the back face of the end cover, the fixing block is movably connected into the splicing groove in a clamped mode, and special channels and spaces are provided for lines through thin line grooves and thick line grooves, so that various lines can be arranged according to preset paths; the wire is prevented from being wound in equipment, the wire is not easy to move due to vibration of the equipment, a connector and an insulating layer of the wire can be protected, damage caused by friction of other parts of the wire is reduced, and the service life of the wire is prolonged.

The application provides a partial discharge detection device based on multi-physical quantity collaborative sensing, belongs to the technical field of electrical engineering, and comprises a detection device shell, a sealing column, an ultrasonic sensing module, an ultrahigh frequency sensing module, a filtering and amplifying module, a light source module, a photoelectric conversion module and a gas insulated equipment. The bottom of the detection device shell is integrally formed with the sealing column. The bottom of the sealing column is electrically connected with the ultrasonic sensing module. The bottom of the ultrasonic sensing module is electrically connected with the ultrahigh frequency sensing module. The upper surface of the detection device shell is electrically connected with the filtering and amplifying module, the light source module and the photoelectric conversion module. The application avoids the complicated processes such as power failure, gas recovery, vacuum extraction, gas filling, standing and leakage detection that must be experienced in the traditional installation mode, shortens the original maintenance time of several hours or even several days to several minutes, greatly improves the power supply reliability, and reduces the operation and maintenance cost.

This invention belongs to the field of electrical engineering technology, specifically relating to a comprehensive planning method and system based on mobile hydrogen energy storage vehicles and energy storage power stations. The method first constructs a spatiotemporal interaction model—an electro-hydrogen energy model. Then, based on this model, a two-stage comprehensive capacity planning model is built. In the two-stage comprehensive capacity planning, the planning stage model is constructed with the objective of minimizing the sum of system operating costs and energy storage construction costs, while the operation stage model is constructed with the objective of minimizing system operating costs. Finally, the two-stage comprehensive capacity planning model is solved to obtain the optimal energy storage planning scheme, which includes the number of mobile hydrogen energy storage vehicles, the construction location and capacity of the energy storage power station. This invention, through the spatiotemporal interaction model—an electro-hydrogen energy model, enables more accurate comprehensive planning of mobile hydrogen energy storage vehicles and energy storage power stations, reducing the total energy storage construction cost while ensuring system operational reliability.

The utility model provides a transformer station shielding device capable of reducing electromagnetic interference, which belongs to the technical field of electrical engineering and comprises a bearing mechanism and a shielding mechanism, the protection mechanism comprises a shielding assembly arranged at the top of the fixing piece and a connecting assembly arranged on the surface of the fixing piece, the fixing piece comprises a fixing plate and an inserting piece fixedly installed on the surface of the fixing plate, and the shielding assembly comprises a shielding device arranged on the surface of the fixing plate; the shielding ring is arranged on one side of the shielding device, and the connecting assembly comprises a dustproof shell arranged on the surface of the fixing plate and a power socket arranged at the bottom of the fixing plate. According to the utility model, through mutual cooperation of all parts of the protection mechanism, not only is the overall protection performance of equipment enhanced, but also the safety and the stability of power supply are ensured, the service life of the equipment is prolonged, and the working efficiency of the equipment is also improved.

This utility model discloses an electrical engineering grounding device, belonging to the field of electrical engineering technology. The device includes a main rod, a blocking pin, a grounding rod, and a counterweight. A guide groove is formed inside the main rod, and the grounding rod is slidably connected inside the guide groove. Several slots are formed through the main rod, and the blocking pin is inserted into the slots. Lifting the main rod and then pressing it down causes the blocking pin to strike the grounding rod, thus driving the grounding rod into the soil, reducing the possibility of injury and improving the practicality of the device. A counterweight is sleeved on the main rod, forming a rotatable connection with the main rod. A mounting protrusion is fixedly provided at the bottom of the counterweight, and a mounting ring is fixedly installed on the outer circumference of the main rod. The mounting ring has a mounting groove, and the mounting protrusion is embedded into the mounting groove, forming a rotatable connection between the mounting protrusion and the mounting groove, achieving the purpose of rotating the counterweight and facilitating use by workers at different angles.

The application belongs to the technical field of electrical engineering and relates to a method for quickly determining a node marginal carbon emission price of a power system, comprising the following steps: comprehensively solving a model SCUC and a model SCED to obtain all unit output curves and power prices of each node at each time; changing a target function of the model SCED to be solved again to obtain power prices of each node at each time containing a marginal carbon emission price component; wherein, a price generated by a single time single thermal power unit carbon emission amount is multiplied by a coefficient to be added to a single thermal power unit single time operation cost and start-up cost as a cost item; the coefficient is small, and all unit output curves obtained by solving are not changed; the two kinds of power prices of each node at each time obtained by calculation are subtracted and then divided by the above coefficient to analyze a price generated by the marginal carbon emission amount of the node at the time, and the application can quickly analyze the related price.

The invention discloses a fault detection method and system based on a transformer rectifier, and relates to the technical field of electrical engineering, and the method comprises the following steps: S001, building a frequency-crossing steady-state to dynamic continuous observation baseline under different frequency excitation conditions, synchronously collecting a magnetic flux signal, a current signal and a temperature rise signal, and injecting a micro-amplitude polarization mark to obtain a frequency-crossing steady-state to dynamic continuous observation baseline; the spectrum module is used for tracking an energy flow direction and constructing a multi-parameter coupling spectrum with a time evolution characteristic; and S002, performing causal coherent decomposition based on the multi-parameter coupling map, identifying transient bending rate offset of a hysteresis loop under frequency change, extracting an energy imbalance parameter generated by magnetic flux response lag, and calibrating a potential instability region in a feedback link. According to the method, multi-parameter coupling atlas construction and causal instability identification are realized, energy abnormity is predicted through anti-fact playback and frequency replacement, and the reversible time grid and conjugate injection are combined, so that electromagnetic recoil rapid extinguishing is realized, and the system safety and the self-healing capability are improved.

The present application relates to the technical field of electrical engineering, in particular to a method for coordinated optimization scheduling of energy storage frequency regulation reserve considering the characteristics of electric hydrogen load. The method obtains basic data of a power system, including: thermal power unit data, wind turbine data, electric hydrogen load data and lithium battery energy storage data; establishes an objective function of a coordinated optimization scheduling model of energy storage frequency regulation reserve considering the characteristics of electric hydrogen load; establishes operation constraints, frequency safety constraints and frequency regulation reserve constraints of the coordinated optimization scheduling model of energy storage frequency regulation reserve considering the characteristics of electric hydrogen load; and solves the coordinated optimization scheduling model of energy storage frequency regulation reserve considering the characteristics of electric hydrogen load by using a solver to obtain an optimal scheduling scheme of the power system. The present application utilizes the fast response characteristics of electric hydrogen load and lithium battery energy storage to improve the frequency safety and economic operation of the system.

The invention belongs to the technical field of electrical engineering, and relates to a scheduling method for distributed risk robust standby optimization operation of an AC / DC hybrid microgrid system, which comprises the following steps of: constructing a two-stage robust optimization model of an operation risk and AC / DC hybrid microgrid system; the two-stage robust optimization model of the alternating current and direct current hybrid connection micro-grid system is disassembled into sending end and receiving end problems through ADMM decomposition; sending end and receiving terminal problems are simplified into a compact form and are disassembled into a main problem and a sub-problem; the method comprises the following steps of: utilizing Camp; the main problem and the sub-problems are solved through a CG algorithm, and a coupling variable value and a system scheduling scheme are obtained; updating a penalty factor and a Lagrange multiplier by using the coupling variable value; and correcting the main problem and the sub-problem according to a penalty factor and a Lagrange multiplier, carrying out next iteration, and if an ADMM convergence condition is met, obtaining an optimal scheduling scheme.

The utility model discloses a monitoring device for intelligent auxiliary equipment of an unattended substation, which relates to the technical field of building electrical engineering and comprises a monitoring terminal and a power distribution box. The monitoring terminal comprises a first indicating lamp, a manual and automatic change-over switch, a second indicating lamp, a third indicating lamp and a rotary button, the power supply distribution box internally comprises a plurality of control switches, and contactors and circuit breakers are installed in the control switches. And the plurality of contactors are electrically connected with a lamp, a draining pump, a dehumidifier, an air conditioner and a ventilator through strong current lines respectively. According to the scheme, the problem that the existing unattended substation adopts a camera for remote monitoring is solved; however, whether the auxiliary devices in the substation normally operate or not and whether the auxiliary devices are well processed or not cannot be visually judged only through visual observation of workers in front of a screen.

The invention provides an electricity market area joint clearing method based on sand table deduction, and relates to the technical field of electrical engineering. A multi-regional power grid joint simulation model with an alternating current power flow equation as a core is constructed by obtaining physical parameters of each participating regional power grid, and node voltage, branch power flow and section power are solved through a Newton-Raphson method; based on a market clearing rule, constructing an optimization objective function containing an energy abandoning penalty term and a weight coefficient, and setting a power grid physical safety operation constraint; an improved multi-target particle swarm algorithm is adopted for iterative solution, security constraints are verified through whole-network load flow calculation in each iteration, and if the security constraints are not met, a comprehensive penalty function is constructed to adjust the search direction; and outputting a final safe clearing scheme after the convergence condition is met, and dynamically displaying the power grid state and the clearing result through a three-dimensional graphical interface. The method accurately simulates multi-regional power grid operation, gives consideration to economical efficiency and new energy consumption, guarantees the safety of the power grid, and is suitable for a power market regional joint clearing scene.