85results about How to "Reduce load fluctuations" patented technology

This invention relates to a system load control method of mobile exchange center. The procedures are that a overloading control process that independent run in system is built to initialize data and enter working state when the system is started or transferring of reserve machine to main machine. A super timer is set to send timer message to overloading control process in supporting system. CPU occupancy is detected and the system overloading or overloading release is determined unitedly to make sure whether to use overloading control and judge whether to accept or limit certain business. Businesses that allow accessing is set in schedule time interval to limit the exceeding business when the overloading control is needed. System load control complexity is reduced by this method and it is convenient to unified management and maintenance. Load fluctuation in load control is reduced and load control failure is avoided by this invention.

A maintenance-free moisture absorber comprises a connecting flange, an upper connecting base, a condensation cover and an air inlet and outlet module, moisture absorbing silica gel, a heating device and a control box, wherein the connecting flange, the upper connecting base, the condensation cover and the air inlet and outlet module are sequentially connected; the moisture absorbing silica gel and the heating device are arranged in the condensation cover; and the control box is positioned outside the condensation cover. A breathing tube communicated with the connecting end of the air inlet and outlet module through the moisture absorbing silica gel is arranged in the moisture absorbing silica gel, a condensation cavity is positioned in the upper connecting base, one end of the condensation cavity defined by an air duct is communicated with the top end of the breathing tube, and the other end of the condensation cavity is communicated with a flange opening of the connecting flange. A semiconductor refrigeration piece and a radiator are symmetrically arranged on the outer portion of the air duct, and the semiconductor refrigeration piece is connected to the refrigeration control end of the control box. A method for controlling the maintenance-free moisture absorber comprises collecting color information of the moisture absorbing silica gel in real time; comparing an RGB value at the set comparison moment and position on the day and a set RGB value; if the RGB value at the set comparison moment and position on the day is larger than the set RGB value, setting a night dehydration control mark, first starting to perform refrigeration and then performing heating; after the reduction process of the moisture absorbing silica gel is ended, first stopping heating and then stopping refrigeration; or else resetting.

The invention discloses a double-layer bidding optimization method for a pumped storage unit in a day-ahead electric power spot market. The method comprises the steps of firstly randomly generating Wgroups of new quoted prices in a quoted price range; then calling a gurobi optimizer to solve the market clearing model, and optimizing related parameters of the pumped storage unit under the target of minimum total power generation cost of the whole system; and with the goal of obtaining the maximum income of the pumped storage unit in the electric power spot market, optimizing the iterative process through a genetic algorithm until the optimal quotation and capacity optimization result of the pumped storage unit is output. According to the method, reasonable arrangement of the capacity of the pumped storage unit and optimization of resource allocation can be realized, and meanwhile, higher income is obtained, so that the competitiveness of the pumped storage power station in the market is improved.

The invention belongs to the field of power systems, and particularly relates to an electric vehicle charging optimization guiding strategy considering a reward mechanism. In the prior art, little consideration is considered in the aspect of arousing user enthusiasm, meanwhile, configuration information such as electric vehicle configuration information and travel characteristic information, battery capacity of an electric vehicle and the like and the state of charge at the beginning of charging can influence the charging duration of the electric vehicle; therefore, rewards and charging expenses of the electric vehicle in the aspect of reducing load fluctuation are mainly considered, user travel requirements are considered, and therefore the optimal charging time period of the electric vehicle is determined; the reward mechanism of the charging station for reducing the peak-valley difference and the load fluctuation of the power grid is introduced, and finally, the proposed optimal scheduling model is solved by using a real-time optimization algorithm of the dynamic response of the electric vehicle.

The invention discloses a molten salt heat storage solar thermal power generation system. The system comprises a heat collecting subsystem, a heat storage subsystem, a steam generation subsystem and a power generation subsystem connected in sequence; the heat collecting subsystem is connected with the heat storage subsystem; the heat storage subsystem is connected with the steam generation subsystem; and the steam generation subsystem is connected with the power generation subsystem. As the connecting relation of the steam generation subsystem to the heat collecting subsystem and the heat storage subsystem is improved, the power load output stability of the power generation subsystem is improved; and the power load output by the system is not changed along with the change of solar radiation, so that the load fluctuation is largely reduced, and the whole control operability of a power station is promoted.

The invention relates to an intra-regional electric vehicle ordered charging control method. The method comprises the steps of analyzing trip characteristics of electric vehicles based on the trip chain theory, collecting trip chain information of the number of N electric vehicles in a region, obtaining the battery state of charge of each electric vehicle at an initial moment of a user and obtaining the charging time and charging place of each electric vehicle through analysis; obtaining operating state information of a power grid, and updating a conventional load curve; and finally, aiming to minimize the load difference between peak and valley of a power distribution network, and determining the optimal charging time period and the optimal charging duration of each electric vehicle by using the genetic algorithm. According to the invention, the strategy to control the ordered charging of the electric vehicles can be made, the trip chain theory is used for predicting the charging load, the authenticity of the electric vehicle load prediction is improved, the availability of the control strategy is improved, and the effects of reducing the difference between peak and valley and the load fluctuation are achieved.

The invention discloses a site selection and optimal configuration method for microgrid comprising electric vehicle charging station, and the method comprises the steps: firstly proposing a concept ofa charging service radius based on a Voronoi diagram through considering the radiation area of a micro-grid system and the distance from a service boundary to a system center; and the site selectioncoordinates of the system are determined by taking the maximum sum of charging service radiuses as an objective function, so that the service range of the microgrid system containing the charging station is the widest. Aiming at the limitation of independent research of distributed energy and electric vehicle charging station planning, the invention provides a microgrid system double-target planning model containing an electric vehicle charging station, which aims at reducing the overall economic cost of a microgrid and an electric vehicle user and reducing the total load fluctuation of the microgrid. The defects in the prior art are effectively overcome, and good economic and social value is achieved.

The present invention relates to an oil pumping device with a pumping rod, including a motor (15), a reducer (17) connected with the motor, an underground oil pumping mechanism and an electric control cabinet (11). The present invention is characterized in that a roller lifting mechanism is added and connected between the reducer (17) and the underground oil pumping mechanism; the roller lifting mechanism includes a double-roller winch (10), an oil-pumping end steel rope (7), a counterweight end steel rope (7-1), a pulley bracket (9), a well mouth pulley (8), a bend pulley (12), a counterweight movable pulley (13), a counterweight (14) and a counterweight well (24). The oil pumping device with a pumping rod provided by the present invention, particularly suitable for a deep oil well, a dense oil well and a high wax content oil well, has the advantages of simple and reasonable structure, long stroke distance, convenient regulation, reliable operation and long service life, thus greatly decreasing the production cost and the material consumption and increasing the yield of crude oil when reducing the energy consumption.

The invention relates to a trailing edge flap control method for relieving load fluctuation of a wind wheel of a floating type wind turbine. The method is used for relieving the power fluctuation caused by the floating type wind turbine platform movement; and according to six degrees of freedom (including longitudinal swinging, transverse swinging, vertical swinging, longitudinal shaking, transverse shaking and vertical shaking) of the platform movement, and measured data of other necessary parameters, the deflection angle of the wind turbine blade flap is determined, wherein the correspondingrelation between the six degrees of freedom and the relative speed (including the axial relative speed and the tangential relative speed) of a trailing edge flap, the corresponding relation between the axial relative speed and the deflection angle of the flap and the corresponding relation between the tangential relative speed and the deflection angle of the flap are involved. Through the adoption of the flap control method, the power fluctuation of the wind turbine caused by the platform movement can be effectively reduced, and the method has a good application prospect on the floating typeoffshore wind turbine.

The invention discloses an evaporation control device used in a refrigerating system, comprising a programmable evaporation controller, an electronic expansion valve and a sensor, wherein, the programmable evaporation controller is connected with the electronic expansion valve, and is connected with an evaporator through the sensor; and the electronic expansion valve is arranged on a refrigerant input pipeline of the evaporator; the sensor is used for detecting the temperature and the pressure in the evaporator, and outputting the detected temperature and pressure signals to the programmable evaporation controller; the programmable evaporation controller is used for receiving the detected temperature and pressure signals detected by the sensor; the opening and closing of the electronic expansion valve as well as the opening time and the opening of the electronic expansion valve are controlled according to the signals; and the electronic expansion valve is used for controlling the amount of the refrigerant entering into the evaporator under the control of the programmable evaporation controller, thus realizing the accurate control on the temperature in the evaporator. By utilizing the evaporation control device provided by the invention, the accurate control on the temperature and the pressure is realized, the reaction sensitivity is improved, and the energy consumption is lowered.

The invention relates to an automatic unloading line for recrement, and belongs to material conveying equipment. The automatic unloading line mainly takes a multiline reciprocating track with a track unloading segment, and a weighted and heighted automatic dumpbottom transfer truck as an initial segment of the automatic unloading line, and takes guide channels (5, 6, 7 and 8) and a feed mechanism (14) which receive the output of unloaded materials, and two or more stages of belt type conveying (9, 11) which are key components as a tail segment of the automatic unloading line. The working tail end of unloading components of the unloading segment is the terminal of track transportation; the unloading segment supports the bearing surface and the horizontal plane of the transfer truck, and keeps supporting the inclination of a lift angle (alpha) in the operating direction; the lift angle takes sliding power which makes the transfer truck staying on the lift angle generate back stroke and the unloading components of the transfer truck reset as the limit; and the track keeps truck sliding gradient which can make a unloaded transfer truck return in the whole stroke. The bidirectional use of the unloading segment skillfully provides possibility of reciprocating work, obviously reduces occupied area and simplifies a structure; the belt type conveying strengthens maneuverability of the unloading line; and the automatic unloading line for the recrement has the advantages of reasonable proposal conception, deft design, high efficiency, low consumption and convenient management.

The invention discloses a public building participated grid optimization operation method. The grid optimization operation method comprises the steps of S1, building a public building adjustable resource optimization operation control information base, wherein the information base contains all adjustable resources such as photovoltaic cells, wind power generation, EV and adjustable loads in public buildings; S2, establishing an adjustable resource optimization operation mode, and sending the adjustable resource optimization operation mode to the adjustable resources in the buildings, wherein the ith adjustable resource receives the notification and judges whether the optimization operation mode is allowed to be accepted or not; and S3, if not, updating the information base according to constraint conditions, if so, judging whether a multi-objective optimization objective is met or not, if so, performing an optimization operation according to the mode, and if not, continuing to update the information base according to the constraint conditions. Fluctuations of an output building overall load curve are enabled to be greatly reduced, an optimized load area is stable, and the difference between peak and valley is also obviously reduced.

The invention provides a variable-speed feathering shutdown method and device and a wind turbine generator set, and relates to the technical field of wind turbine generator set feathering shutdown. The wind turbine generator set comprises a generator and a cabin, wherein the generator is installed in the cabin. The method comprises the steps that the shutdown feathering speed of the wind turbine generator set is changed from an initial first shutdown feathering speed to a second shutdown feathering speed according to the rotating speed of the generator and the acceleration of the cabin, wherein the first shutdown feathering speed is determined by the pitch angle at the initial moment of the wind turbine generator set, and the second shutdown feathering speed is determined by the pitch angle at the current moment of the wind turbine generator set; the shutdown feathering speed of the wind turbine generator set is changed from the second shutdown feathering speed to a third shutdown feathering speed according to the rotating speed and power of the generator, and feathering and shutdown are completed at the third shutdown feathering speed. Through the method, the device can enable thewind turbine generator set to have a good load reduction effect in the shutdown process.

The invention relates to an automatic unloading device for recrement, and belongs to material conveying equipment. The automatic unloading device only selects an automatic unloading segment of a track dumpbottom unloading mechanism, and completes unloading and resetting of automatic unloading components of the device in a reciprocating work mode of a transfer truck to realize recycling of the dumpbottom transfer truck; a back stroke sliding start lift angle (alpha) of the bearing surface of a carrier roller on the unloading segment makes the transfer truck automatically complete back stroke and simplifies power deployment; parallel unloading segments can improve production efficiency and reduce fluctuation of unloaded loads; and an accommodating cavity (7) connected with flow phase of unloaded materials, and a balance feeding machine (5) guide the transfer and circulation of the unloaded materials, and balance the output of the unloading device. The device has simplified structure and skillful and reasonable conception, is convenient to realize integrated automation of transfer, obviously simplifies operation and management, is equipped with prepositive conveying on an inlet of the device to provide bidirectional connection of bearing the unloading and delivering the empty transfer truck and facilitate obvious reduction of the whole transfer cost and great decrease of occupied area, and is verified by prototype tests.

The invention relates to the field of new energy sources and compressed air energy storage, in particular to a compressed air energy storage device with a heating function and a method for operating the compressed air energy storage device. The compressed air energy storage device is characterized in that a pressure vessel is directly connected with a high-pressure air storage tank by a top pipeline; the pressure vessel is connected with a cold water pool by a bottom pipeline via a hydraulic device; the pressure vessel is connected with an external liquid source by the bottom pipeline via a preheater and a liquid shifting pump; a heat exchanger is arranged on the inner upper portion of the pressure vessel, a liquid circulating pump is arranged on the lower portion of the pressure vessel and is connected with an inlet of the heat exchanger by a liquid pipeline, and an outlet of the heat exchanger extends to the lower portion of the pressure vessel via the liquid pipeline. The compressed air energy storage device has an energy storage operating mode and a power generation operating mode. Air can be compressed by the compressed air energy storage device in the energy storage working mode, and heat released in compression procedures can be used for heating; the air is expanded when the compressed air energy storage device is in the power generation working mode, and the compressed air energy storage device can be driven to generate power. The compressed air energy storage device and the method have the advantages that the wind power dissipation and storage capacity can be improved, and heating pressures can be relieved.

The invention discloses a full-automatic efficient polishing machine. The full-automatic efficient polishing machine comprises a rotary disc capable of rotating in an indexing mode, a first side facerough polishing device, a second side face rough polishing device, a forward longitudinal polishing device, a reverse longitudinal polishing device and a transverse polishing device, wherein the firstside face rough polishing device, the second side face rough polishing device, the forward longitudinal polishing device, the reverse longitudinal polishing device and the transverse polishing deviceare arranged in the circumferential direction of the rotary disc, and a plurality of clamps evenly distributed and used for fixing products to be polished and a first motor driving one clamp to horizontally rotate are arranged in the circumferential direction of the rotary disc. According to the full-automatic efficient polishing machine, grid textures can be formed on the surface of a product, and the function of the polishing machine is expanded.

The invention relates to an electric automobile charging power regulating method and system. The method includes firstly determining scheduling plan power of electric automobile charging power, and then solving actual charging power of various electric automobiles under demand response management according to the scheduling plan power, wherein the scheduling plan power is related to electric load,the higher the electric load is, the lower the scheduling plan power is, the actual charging power is positively correlated to the scheduling plan power, the lower the scheduling plan power is, the lower the actual charging power of the electric automobile is. The charging power is regulated, particularly the charging power of the electric automobile is reduced at the electricity utilization peak, and the charging power of the electric automobile is not limited in the valley of electricity utilization. The system can achieve orderly guide and real-time power control in charging of the electric automobile, reduces charging load to a certain degree at the electricity utilization peak on the basis of the full use of the existing distribution network resources, realizes peak shaving of the power grid, stabilizes the difference between the peak and the valley of the power grid, reduces load fluctuation of the power grid, and improve stability of the power grid.

The invention discloses an electric vehicle real-time charging scheduling method based on charging station comprehensive state prediction. The method comprises the following steps: establishing a charging station comprehensive state prediction model of a charging station function, an idle state and a comprehensive charging progress; based on the vehicle scheduling theory, taking the vehicle ownersatisfaction degree, the maximum charging station total income and the minimum power grid load total variance fluctuation as targets, establishing a multi-objective scheduling model, optimizing the model, and obtaining an optimal scheduling strategy, so an effective solution is provided for simultaneously reducing charging station utilization imbalance, improving vehicle owner satisfaction, improving charging station income and reducing power grid load fluctuation.

The invention discloses a multi-hole type wind turbine energizer. The multi-hole type wind turbine energizer comprises a multi-hole guide plate with uniformly distributed holes, a pedestal, and a damping limiting device which is arranged between the multi-hole guide plate and the pedestal for buffering or limiting left-right rotation of the multi-hole guide plate, wherein the centre of the multi-hole guide plate is equipped with a main shaft; the multi-hole guide plate is connected with the pedestal through the main shaft and a rolling bearing; and the damping limiting device comprises a damping limiting device body, a plurality of baffle plates and a spring which is arranged between every two adjacent baffle plates. The multi-hole type wind turbine energizer can buffer and limit left-right rotation of the multi-hole guide plate, and the baffle plates are uniformly distributed on the main shaft and the damping limiting device body in a peripheral direction. The multi-hole type wind turbine energizer can efficiently utilize low-speed air energy below a wind turbine, can effectively improve wind turbine output power, also can reduce wind turbine load fluctuation, and can reduce influences of the environment to be smallest.

The invention belongs to the technical field of wheel train transmission, and discloses a tensioner. The tensioner comprises a belt wheel assembly, a fixing mechanism, a reset piece, a tensioning arm,a one-way bearing and a damping fin, wherein a belt is wound on the belt wheel assembly; the reset piece is arranged on the fixing mechanism; the belt wheel assembly is rotationally arranged at one end of the tensioning arm, the other end of the tensioning arm is arranged in the fixing mechanism and can rotate relative to the fixing mechanism, and the reset piece is abutted against the fixing mechanism and the tensioning arm; the one-way bearing is arranged on the tensioning arm, and the rotating direction of the one-way bearing is the unloading direction of the tensioner; and one side of thedamping fin is connected to the fixing mechanism, the other side of the damping fin is abutted against the one-way bearing, the damping fin is of a plane structure, and the sliding friction force between the damping fin and the one-way bearing is larger than the rolling friction force of the one-way bearing. According to the tensioner, the damping fin is of the plane structure, the damping fin isuniformly abraded, the friction speed of the damping fin is reduced, the service life is prolonged, and the movement is more stable and reliable due to the fact that the abrasion is small in a long-time use process.

The invention discloses a multi-hole type wind turbine energizer. The multi-hole type wind turbine energizer comprises a multi-hole guide plate with uniformly distributed holes, a pedestal, and a damping limiting device which is arranged between the multi-hole guide plate and the pedestal for buffering or limiting left-right rotation of the multi-hole guide plate, wherein the centre of the multi-hole guide plate is equipped with a main shaft; the multi-hole guide plate is connected with the pedestal through the main shaft and a rolling bearing; and the damping limiting device comprises a damping limiting device body, a plurality of baffle plates and a spring which is arranged between every two adjacent baffle plates. The multi-hole type wind turbine energizer can buffer and limit left-right rotation of the multi-hole guide plate, and the baffle plates are uniformly distributed on the main shaft and the damping limiting device body in a peripheral direction. The multi-hole type wind turbine energizer can efficiently utilize low-speed air energy below a wind turbine, can effectively improve wind turbine output power, also can reduce wind turbine load fluctuation, and can reduce influences of the environment to be smallest.

The invention discloses an industrial load classification control method based on a daily load curve. According to the minimum value of per unit values of daily load curve data and the distribution rule of per unit value data, a judgment is made, and if the daily load feature is intermittent and only one work period exists, loads of the class are work loads in a certain fixed period; if multiple work periods exist, the loads of the class are work loads in multiple intermittent periods; if the daily load feature is continuous and the load fluctuation is small, the loads of the class are continuous working stable loads; if the daily load feature is continuous and the load fluctuation is large, the loads of the class are continuous working loads with the obvious peak-and-valley difference fluctuation. According to the four classes of industrial loads, different load control methods are adopted.

The invention relates to a coal mining machine motor speed regulating method based on path optimization and speed regulating control, and belongs to the technical field of mining. The method is based on petrographic characteristics of a coal face, variable frequency speed regulating control is carried out on an alternating-current variable-frequency speed regulating electromotor used in a coal mining machine, by means of a controller switch, frequency control signal change is combined with speed regulating control, the rotation speed of an alternating-current variable-frequency traction motor and the rotation speed of a cutting motor are adjusted, a frequency control signal controlling change of the rotation speeds changes in a non-step mode and is converted into a target frequency signal through a transition path, and accordingly response of the electromotor is fast and load fluctuation is reduced. The coal mining machine motor speed regulating method based on path optimization and speed regulating control improves response speed of the alternating-current variable-frequency electromotor of the coal mining machine during speed regulating, and meanwhile reduces load fluctuation of the motors in the speed regulating process, so that effectiveness and stability of the alternating-current variable-frequency electromotor and the whole coal mining machine are improved, speed regulating of the whole machine has certain self-adaptability, and work can be done by a few people or remotely.

The invention relates to an afterheat utilization device, in particular to an afterheat utilization device of a sintering machine, and belongs to the technical field of machinery. The afterheat utilization device structurally comprises an afterheat boiler and an annular cooler communicated with the afterheat boiler. The sintering machine afterheat utilization device has an improvement point that a compensation hot air furnace is also arranged between the afterheat boiler and the annular cooler, the compensation hot air furnace is provided with an air inlet end and two air outlet ends, the air inlet end is respectively communicated with a liquefied gas pipe, a coal gas pipe and a combustion support air pipe, one air outlet end is communicated with the afterheat boiler through a corresponding air outlet pipeline, and the other air outlet end is communicated with a high-temperature smoke gas pipeline through the corresponding air outlet pipeline. The sintering machine afterheat utilization device has the beneficial effects that the economic benefits are obviously improved, the operation of a unit is stabilized, and the service life of the unit is prolonged.

The invention relates to an electric car charging control method and a charging pile. Two options, namely, accepting the demand response management and rejecting the demand response management, are provided for users. The method includes: determining whether the user accepts the demand response management or not through the charging pile according to user's operation, if so, then determining the charging power of the charging pile through an electric car demand response management system; if not, then determining the charging power of the charging pile through the car in charging; and further,charging the car needing to be charged according to the charging power of the charging pile. On the basis of full use of the existing distribution network resources, the method realizes orderly guideand dynamic adjustment control on output real-time power of the charging pile, guides the charging behavior of the electric car to transit into an ordered charging mode from a single-way out-of-orderrandomly charging mode, realizes peak shaving of the power grid, realizes charging on peak shifting, reduces load fluctuation of the power grid, reduces energy consumption of the power grid, improvesreliability of the distribution network and increases economic benefit thereof.

The invention relates to the technical field of micro-grids, and provides an energy storage online pricing system and method. The pricing system comprises a micro-grid parameter acquisition device, apower grid dispatching parameter acquisition device, a reliability acquisition device, a cost acquisition device, and a controller connected with the microgrid parameter acquisition device, the powergrid dispatching parameter acquisition device, the reliability acquisition device and the cost acquisition device. The controller is configured to generate a pricing target model, and the pricing target model performs traversal optimization by using a genetic algorithm to obtain a pricing strategy. The energy storage scheduling economy of a power grid and the self-built energy storage economy of auser side are maximized, so that self-built energy storage equipment of the user side is excited, the construction investment of the power grid is delayed, the power shortage loss and the load fluctuation are reduced, and the economy and reliability of power grid operation are improved.

The invention discloses a power distribution network-multi-microgrid system based on an energy router, and a scheduling method thereof, and belongs to the technical field of power systems. The system comprises a power distribution network, one or more energy routers and a plurality of combined cooling heating and power supply type microgrids; an electrical connecting line and a heat energy pipeline are built between each micro-grid and one energy router, and each energy router and the micro-grid connected with the energy router form an area; and electrical connecting lines are built between the energy routers and the power distribution network and between the energy routers. The method comprises the following steps: establishing an optimal scheduling model of a power distribution network and a micro-grid; solving the optimal scheduling model of the power distribution network to obtain the interaction power of each electrical tie line as the constraint condition of the optimal scheduling model of the micro-grid, and solving the lower-layer optimal scheduling model to obtain the output of each device in each micro-grid; and iteratively selecting an optimal scheduling plan. The system operation cost can be reduced, and the stability of the power distribution network is improved.

The invention relates to a power grid flexible load control method and device, computer equipment and a storage medium. The method comprises the following steps acquiring control parameters of a powergrid for flexible load equipment including a charging and discharging device and a power consumption device; obtaining an original load fluctuation value of the power grid according to the control parameters; updating the original load fluctuation value according to the constraint condition of the power grid to obtain a target load fluctuation value, wherein the target load fluctuation value meets a preset fluctuation value convergence condition, and the constraint condition comprises at least one of a charging and discharging electric quantity constraint condition, a charging demand constraint condition and a power utilization constraint condition; and determining a target control parameter of the power grid according to the target load fluctuation value, so that the power supply networkperforms charging and discharging control on the charging and discharging equipment andor performs power utilization control on the power consumption equipment according to the target control parameter. By adopting the method, various flexible loads in the power grid can be optimally controlled, small power grid load fluctuation is ensured, and safe operation of the power grid is ensured.

The invention discloses an electric vehicle charging and discharging optimization scheduling method based on interval constraint, and aims to process uncertainty of charging and discharging prices and user participation at the same time and reduce load fluctuation. The method comprises the following steps: step 1, establishing an electric vehicle charging price interval model; step 2, establishing an electric vehicle discharge price interval model; 3, establishing an electric vehicle user charging and discharging behavior model based on the electric vehicle charging price interval model and the electric vehicle discharging price interval model; 4, establishing an electric vehicle charging and discharging planning problem model; and 5, solving the electric vehicle charging and discharging planning problem model by using a non-dominated sorting genetic algorithm II to obtain an electric vehicle charging and discharging optimization plan. According to the method, the power grid load can be adjusted through price excitation users participating in charging and discharging scheduling, and the purposes of reducing the charging and discharging cost of the electric vehicle users and reducing load fluctuation are achieved.

The invention relates to an automatic power generation control follow-up load disturbance test method for a thermal generator set, which is mainly and technically characterized by comprising the following steps of: setting rated power, an initial load value and a target load value of the thermal generator set, and entering a follow-up load disturbance mode; recording different moments of enteringload change and actual loads at the moment according to an automatic power generation control follow-up disturbance test load change curve; and checking whether the automatic power generation controlspeed regulation function, the control response time, the dynamic deviation and the static deviation are qualified or not under the follow-up test of the thermal generator set. The design is reasonable, the test time is shortened, the risk of unit load fluctuation and equipment outage is reduced, the working efficiency is improved, and scientific guidance can be provided for an automatic power generation control test.