1266 results about "Power compensation" patented technology

The invention relates to the technical field of hybrid inverters, and discloses a hybrid inverter supporting reactive compensation and a control method thereof, and the hybrid inverter comprises a DC input unit, a three-phase full-bridge inversion unit, a grid-connected switching unit, a signal acquisition unit and a digital control unit. The direct current input unit comprises a photovoltaic interface, a battery interface and a direct current bus and is used for converging photovoltaic and energy storage electric energy; the three-phase full-bridge inversion unit is composed of a power device and an LCL filter and converts direct current into alternating current. The grid-connected switching unit comprises a static switch and an isolation transformer and is used for controlling power grid connection; the signal acquisition unit detects voltage and current signals; and the digital control unit judges a grid-connected mode or an off-grid mode according to the signal, calculates a reactive current reference value and generates a PWM (Pulse Width Modulation) control signal so as to realize reactive compensation control in the grid-connected mode and the off-grid mode. According to the invention, reactive power compensation capability is provided in both grid-connected and off-grid operation modes, and stable operation of the inverter in various working conditions is ensured.

The invention relates to the technical field of temperature control of high-precision industrial heating equipment, in particular to an anti-interference precise temperature control method and system for heating an upper die, and the method comprises the steps: starting a multi-region heating array, heating the upper die to a target temperature according to a preset temperature rise curve, and building a uniform thermal field; before the high-pressure medium is introduced, heat load change caused by the high-pressure medium is predicted based on medium process parameters; in the medium introduction process, dynamic anti-interference compensation control is executed, a feedforward power compensation instruction based on a thermal load and a feedback power fine tuning instruction based on temperature deviation are generated respectively, and the feedforward power compensation instruction and the feedback power fine tuning instruction are weighted and fused into a composite power driving signal for adjusting a heating array; when the temperature fluctuation converges to a stable threshold value, the feedforward compensation weight is gradually reduced, smooth switching to steady-state control is achieved, transient thermal shock caused by a high-pressure medium is effectively restrained through feedforward and feedback cooperative compensation and dynamic weight adjustment, the temperature fluctuation is reduced, and the temperature control precision and stability are improved.

The invention provides a power grid energy conservation and loss reduction system based on dynamic reactive compensation and a reliability optimization method, and belongs to the technical field of power grid energy conservation and loss reduction. Comprising a data acquisition module which is used for acquiring real-time electrical parameters of a power grid; the reactive power demand calculation module is in communication connection with the data acquisition module and is used for receiving the real-time electrical parameters of the power grid transmitted by the data acquisition module, and the reactive power demand calculation module is further used for calculating the real-time electrical parameters of the power grid based on an improved compensation demand prediction algorithm. And according to the real-time electrical parameters of the power grid, dynamically calculating a reactive compensation amount and a reactive compensation type, and generating a compensation instruction by combining the reactive compensation amount, the reactive compensation type and a preset threshold value. The beneficial effects are that the compensation instruction is generated according to the reactive compensation type and the preset threshold value, and the compensation execution module switches the compensation device according to the compensation instruction, thereby realizing reactive dynamic adjustment, and enabling the power grid to achieve the effects of energy saving and loss reduction.

The invention relates to the technical field of energy storage cooperative control, and discloses an improved energy storage converter grid following control algorithm, which comprises the following steps of: 1, extracting positive sequence and negative sequence components of three-phase voltage of a power grid through a double-sequence decoupling phase-locked loop, and acquiring a positive sequence axis component signal by adopting forward rotation coordinate transformation; and 2, when frequency locking is carried out based on the positive sequence axis component signal, extracting a voltage amplitude corresponding to the positive sequence axis component signal, and inputting the voltage amplitude to a feed-forward passivation module. An active power regulation technical scheme based on a frequency deviation threshold value is adopted, the technical effect of simulating the primary frequency modulation characteristic of a network-forming converter is achieved by detecting the power grid frequency deviation in real time and generating an active power compensation signal, and the defect that traditional network-following control lacks frequency active supporting capacity is overcome. And the converter can spontaneously increase the active power to stabilize the power grid frequency when the power grid frequency drops.

The invention discloses a phase modifier unit state monitoring and load control method and system for reactive power compensation of a power grid, belongs to the technical field of automatic control of power systems, and mainly solves the problem that service life loss is aggravated or a control target is single due to the fact that the health state of equipment is not fully considered when an existing phase modifier unit responds to reactive power requirements of the power grid. The method comprises the following steps of: calculating reactive vacancy and extracting vibration frequency band energy characteristics by acquiring voltage and frequency of a power grid as well as vibration, temperature and exciting current signals of a unit in real time, and constructing a health state index HSI in combination with self-adaptive wavelet basis selection; taking minimum equipment life loss and optimal power grid voltage stability as multiple objectives, dynamically generating a load control instruction by adopting a particle swarm algorithm, realizing weight adaptive adjustment based on HSI, and introducing an online life loss model as a constraint condition; finally, reactive power output is adjusted through an excitation system, and cooperative control of power grid stability and equipment life extension is achieved.

The invention discloses an autonomous charging dynamic control system for an inspection robot, and relates to the technical field of inspection robot management, and the system comprises a condition triggering module, a robot sensing module, a task decision module, a dynamic charging control module, a safety monitoring module and a log recording module. When a new inspection task packet is issued to a waiting or charging robot, a condition triggering module starts judgment, and a robot sensing module collects real-time electric quantity, task attributes and a charging pile state and encapsulates data; the task decision module calculates a task emergency degree and constructs a priority, and compares a charging basic priority to trigger a temporary or safe charging strategy; the dynamic charging control module dynamically adjusts charging parameters or calls safety parameters according to the dynamic charging parameters; the safety monitoring module monitors and intervenes in the charging process in real time, the log recording module records key operation and abnormity, and the system can dynamically adapt to task requirements, improves response efficiency and safety and is suitable for complex inspection scenes.

An active-reactive voltage cooperative control method for multiple reactive compensation devices considering energy storage comprises the steps that 1, simulation analysis is conducted on time sequence voltage fluctuation characteristics of a high-permeability photovoltaic grid-connected system, and dynamic influences of photovoltaic output fluctuation in different time periods on system node voltage are quantitatively evaluated; 2, solving a non-dominated solution set of the model by adopting a multi-target particle swarm optimization algorithm, realizing collaborative optimization and trade-off analysis of multi-dimensional performance indexes, and establishing a reactive power regulation model and an energy storage active power support model; and organically coupling the reactive power regulation model and the energy storage active power support model. By means of the method, high photovoltaic area voltage treatment can be effectively carried out in real time, and the method has high engineering application value and wide popularization prospects.

The invention discloses an energy storage battery fault monitoring management method and system based on big data, and the method comprises the steps: calculating the change rate of a battery monomer between each window and an adjacent window, and recognizing an energy output inconsistent time period; identifying adjacent monomer power compensation behaviors in the energy output inconsistent time period; the load allocation rate, the deviation ratio and the heat consumption change amplitude of the compensated single battery in the compensation process are obtained; predicting the damage probability of the single battery in a plurality of periods in the future, and generating a fault probability curve; constructing a masked fault identification model, and identifying the fault state of the single battery; evaluating the fault level of the single battery, and constructing a fault level index table; and evaluating the validity of the fault early warning and maintenance strategy, and updating the fault early warning strategy and the health maintenance strategy. Through the technical method provided by the invention, accurate monitoring and intelligent management of the energy storage battery pack can be realized, the accuracy and timeliness of battery fault early warning are remarkably improved, and efficient and safe operation of an energy storage system is ensured.

The invention relates to the technical field of power systems, and discloses a voltage regulation system of reactive power compensation equipment, which is characterized in that harmonic interference is filtered and eliminated through a voltage reactive power sensing unit, and accurate power grid parameters are acquired; a load trend pre-judgment unit analyzes the historical load curve and the real-time change trend to generate a future pre-judgment signal; the dynamic compensation calculation unit combines the current power grid state with the prediction to calculate the optimal compensation capacity and generate a switching instruction, after the hybrid switching actuator receives the instruction, a thyristor is triggered firstly to realize inrush current-free conduction, a contactor is switched to maintain low power consumption after the current is stable, and meanwhile, the compensation state monitoring unit performs closed-loop adjustment on parameter deviation, so that the optimal compensation capacity is obtained. The multi-dimensional protection unit prevents overvoltage, overcurrent and overheating, the double-path power supply guarantees continuous operation when the main power supply is abnormal, the intelligent communication unit realizes data uploading and remote cooperation, quick response switching of reactive compensation equipment and guarantee of safety of a large-scale power grid are realized, and inrush current impact in the switching process is effectively inhibited.

The invention relates to a coordination method and device for harmonic suppression and reactive power compensation in a power distribution network. The method comprises the steps of obtaining power grid operation parameter information of a power distribution network; according to the power grid operation parameter information, the total current harmonic distortion rate, the power factor and each harmonic current information of the power distribution network are detected; detecting to-be-optimized parameters of the power distribution network according to the total current harmonic distortion rate, the power factor and the current information of each harmonic, the to-be-optimized parameters including at least one of each harmonic and reactive power; and according to the to-be-optimized parameters, suppressing each harmonic in the power distribution network and compensating reactive power in the power distribution network. The method can accurately perform cooperative control on harmonic suppression and reactive power compensation in the power distribution network.

The invention discloses an engineering equipment operation intelligent monitoring and automatic adjusting system and method, and the method comprises the steps: collecting the multi-dimensional operation data of equipment in real time, constructing a three-dimensional operation state evaluation model through an intelligent algorithm, accurately recognizing a stable operation region, and generating a dynamic control reference and a feedback adjustment loop; a control channel decoupling and selective reconstruction technology is adopted, a beneficial synergistic effect is reserved while harmful coupling is eliminated, potential risk points such as resonance are identified through spectral analysis, and a safe operation boundary for perfecting a is established; the analysis equipment responds to dead zone characteristics, the dead zone characteristics are converted into an energy-saving working zone through energy analysis, an optimized power distribution strategy is made, and a multi-stage emergency reserve system is established; a fault early warning mechanism based on vibration characteristics is established, and rapid detection and power compensation of an abnormal state are realized; through equipment response matrix construction and time delay compensation analysis, an accurate real-time control instruction is generated, and the operation efficiency, the stability and the energy-saving level of engineering equipment are comprehensively improved.

The invention provides a JKW control method based on adaptive fuzzy control, which belongs to the technical field of reactive power compensation of a power system, and comprises the following steps of: interacting reactive power compensation states of JKW devices in adjacent regions based on an edge physical agent, constructing a regional reactive power topological graph in combination with local power grid topological data, generating a regional coordination instruction according to a supply-demand relationship, and establishing a regional coordination graph according to the regional coordination instruction; the method comprises the following steps: acquiring proportion deviation, power factor deviation and reactive power change gradient of a mutual inductor, constructing a standard fuzzy input vector in combination with a regional cooperation instruction, mapping the standard fuzzy input vector into a fuzzy linguistic variable through a dynamically updated fuzzy rule base, and reasoning and outputting an initial switching strategy; and comparing and analyzing the proportion deviation and the power factor deviation through a hardware comparator, determining a trigger condition and existence of a fault, and dynamically optimizing an initial switching strategy by combining a regional reactive topological graph to realize the control of the JKW. And the operation stability of the power grid is obviously improved.

The invention discloses a reactive compensation self-adaptive control method based on a power distribution network, which relates to the technical field of power systems, and comprises the following steps: collecting operation parameters of the power distribution network in real time and preprocessing the operation parameters, and identifying a load state and calculating a reactive demand by processing data; the state and parameter configuration of reactive compensation equipment are collected, an adjustment target table is obtained by calculating reactive deviation, and the equipment is dispatched and distributed; adjusting and controlling reactive power through a DDPG algorithm in combination with an OU noise mechanism and a curiosity mechanism based on the reactive demand, the reactive deviation and the equipment matching data, and issuing the adjusted reactive power to compensation equipment to execute reactive compensation; according to the method, a reinforcement learning framework fusing sensing, decision making, learning and control is constructed, multi-source state modeling, reward mechanism driving, refined Q value evaluation, strategy continuous optimization and physical constraint fusion are combined, and the reactive compensation adaptive control target in a complex power grid environment is achieved.

The invention relates to the technical field of intelligent sintering, and discloses a rare earth magnet intelligent sintering production line and a control system, and the system comprises a temperature data collection module, a temperature gradient evaluation module, a temperature change rate fitting module, a heating power adjustment module, a directional heat energy compensation module and an optimized heating instruction generation module. Temperature distribution information in the sintering furnace is obtained; evaluating real-time temperature gradients of different positions in the sintering furnace, and comparing the real-time temperature gradients with a preset gradient threshold value to identify a temperature abnormal region in the sintering furnace; fitting the temperature change rate of the temperature abnormal area; the material phase change critical parameters of the rare earth magnet in the current sintering stage are combined to adjust the heating power of the temperature abnormal area; performing directional heat energy compensation on the temperature abnormal region to obtain a power compensation amount; superposing the power compensation amount and the reference power of the sintering furnace to generate an optimized heating instruction; the intelligent sintering control efficiency of the rare earth magnet can be improved.

The invention discloses a cooperative parameter optimizing and setting method and system for a network construction type reactive power compensation device, terminal equipment and a storage medium, and belongs to the field of power system control. The method comprises the steps of obtaining operation condition data and a power flow initial value of a power grid region where a reactive power compensation device to be set is located, constructing a discretization state space model, calculating a damping ratio according to a calculated system characteristic root, and determining a dominant oscillation mode; respectively changing the installed capacity, configuration points and control parameters of the reactive power compensation device to be set in a preset step length, and generating a characteristic root moving track; the installed capacity, the configuration points and the control parameters are continuously optimized based on the feature root moving trajectory until the preset stabilization capability index is larger than 0 and the optimized feature root real part is smaller than 0, the optimal installed capacity, the optimal configuration points and the optimal control parameters of the to-be-set reactive power compensation device are obtained, the to-be-set reactive power compensation device is adjusted, and the to-be-set reactive power compensation device is adjusted. According to the invention, the problem of lack of cross-band parameter setting in the prior art is solved.

The invention relates to an eddy current heating device for a thermoluminescence element and a heating method. The device comprises a heating disc, a copper coil assembly, a supporting frame, a temperature measuring sensor assembly and a control circuit, the heating disc is in a disc shape, and the copper coil assembly is composed of four multi-layer closely-wound fan-shaped copper coils which are arranged in four quadrant areas of the heating disc respectively; the temperature measuring sensor assembly is provided with four temperature sensors which are embedded into the bottom of the heating disc through heat-conducting glue and connected with the control circuit. The control circuit adopts a PID (Proportion Integration Differentiation) algorithm to independently adjust the current of each sector according to feedback signals of each temperature sensor, realizes rapid temperature rise and accurate temperature control through frequency adjustment and power compensation, and has an over-temperature protection function. According to the device, the temperature of the heating disc can be raised to 300 DEG C within 3 seconds, and the temperature deviation is controlled within + / -0.5 DEG C. Compared with traditional resistance heating, the device has the advantages of being fast in temperature rise, low in energy consumption, high in temperature uniformity, convenient to maintain and the like, and meets the high-precision temperature control requirement of thermoluminescence measuring and reading equipment.

The invention discloses a switching control method and system for a photovoltaic inverter and a capacitor in a power distribution network. The method comprises the following steps: establishing a dynamic voltage sensitivity matrix according to operation data of a plurality of observation nodes in a power distribution area; predicting a reactive power demand value by adopting a rolling time window mechanism and a deep learning model; obtaining a virtual reactive power compensation amount according to the available capacities of all the reactive power compensation devices, optimizing a matching relationship between the reactive power demand value and the virtual reactive power compensation amount, and obtaining an optimal device combination mode between the reactive power demand value and the available capacities of the reactive power compensation devices; and determining a final switching strategy according to the optimal equipment combination mode, the multi-dimensional switching decision factor and the hierarchical switching strategy so as to perform cooperative switching control on the photovoltaic inverter and the capacitor. According to the invention, through accurate cooperative switching control of the photovoltaic inverter and the capacitor, the real-time performance, accuracy and flexibility of reactive power adjustment can be improved, so that the electric energy quality and stability of a power distribution network are improved.

The embodiment of the invention discloses a collaborative optimization method and device for the power quality of a high-permeability transformer area. The method comprises the following steps: acquiring three-phase voltage, three-phase current and environment temperature data; the voltage deviation, the three-phase unbalance degree, the total harmonic distortion rate and the reactive vacancy of the high-permeability transformer area are calculated based on the three-phase voltage and the three-phase current; taking voltage deviation as a primary optimization target, considering optimization of three-phase unbalance degree, total harmonic distortion rate and reactive vacancy, constructing a multi-target optimization function, and carrying out dynamic constraint on an optimization process based on environment temperature data; solving the multi-objective optimization function by adopting an optimization algorithm to obtain a group of optimal decision variables, and converting the decision variables into corresponding control instruction sets; and the control instruction set is issued to the on-load voltage regulating transformer, the reactive compensation equipment and the power electronic compensation module for execution. Therefore, the problems of voltage out-of-limit, harmonic pollution and imbalance are effectively solved through a multi-target cooperation and temperature self-adaption mechanism.

The invention relates to the technical field of microchip power compensation, and discloses an efficient power compensation method and system based on a microchip. According to the method, power parameter data of the microchip are collected through monitoring equipment, and the data comprehensively reflect the real-time power condition of the microchip. And then the collected power parameter data and a preset power threshold are compared and analyzed, and a corresponding power compensation control signal is generated according to an analysis result so as to realize accurate power regulation and control. And then the fluctuation characteristic of the power compensation control signal is evaluated to obtain a power compensation lag index and a power compensation efficiency index, and the acquisition frequency of the power parameter data and the execution mode of the power compensation control process are respectively adjusted based on the two indexes, so that the compensation efficiency is improved and the system flexibility is enhanced. And finally, the overall stability of the power compensation control process is monitored, and when the stability does not meet a preset condition, a power compensation invalid mark is generated to guarantee stable operation of the system.

The invention discloses a voltage regulation and control method and system suitable for a distributed energy storage photovoltaic transformer area of a power distribution network. The method comprises the following steps: establishing a transformer area active power distribution network model for carrying out voltage regulation and control by considering distributed photovoltaic, wind power, an energy storage system, a static var compensator and a load node; a voltage regulation problem is modeled as a Markov decision process, a state space comprises multi-source power information and energy storage state information, and an action space is controlled quantities of a static var compensator and an energy storage system; a Markov decision is solved by adopting a depth deterministic strategy gradient algorithm based on Actor-Critic dual networks, a control action is generated through a strategy network Actor, and a current strategy is evaluated through a value network Critic for training; and inputting the trained strategy network based on the current observation state, outputting an optimal energy storage active / reactive power output and SVC reactive power compensation control instruction, realizing online adjustment of node voltage, and realizing stable control of transformer area voltage.

The invention discloses an intelligent cutting control method and system for blue laser, and the method comprises the steps: carrying out the time domain analysis of the power time sequence data of a blue laser in real time, and obtaining the power fluctuation data; matching the power fluctuation data with a preset defect feature model of the blue laser to determine the defect occurrence probability of the blue laser; under the condition that the defect occurrence probability is determined to be greater than a preset probability threshold value, according to the cutting parameters and the material parameters, determining an initial power compensation parameter and a kerf quality optimization parameter through a compensation parameter calculation model; performing multi-target iterative optimization on the initial power compensation parameter, the kerf quality optimization parameter and the power fluctuation data through a self-adaptive deviation adjustment algorithm to generate a dynamic power control signal; and adjusting the output power and the beam focusing position of the blue laser according to the dynamic power control signal so as to correct the cutting path of the blue laser in real time.

The invention discloses a multi-rotor unmanned aerial vehicle broken propeller fault rapid diagnosis and fault-tolerant stable control system and method, belongs to the technical field of unmanned aerial vehicle flight control, and aims to solve the problems that traditional broken propeller detection is high in cost and unreliable, power compensation robustness is insufficient and return flight logic is lacked. According to the system and the method, on the basis of a high-order nonlinear observation theory, rapid and accurate identification of the abnormal state of the unmanned aerial vehicle power system is realized by constructing a multi-modal signal prediction and residual evaluation system; the method effectively prevents the out-of-control, rolling and even crash of the unmanned aerial vehicle caused by power asymmetry, solves the problem that a traditional fixed control strategy is difficult to adapt to fault working conditions, and adapts to dynamic changes under complex working conditions such as hovering and cruising. Finally, closed-loop control from fault detection to safe return can be realized, the autonomous safe return capability of the unmanned aerial vehicle under the condition of the fault of the propulsion system is ensured, and the method is suitable for unmanned aerial vehicle application scenes with high reliability requirements, such as logistics transportation and inspection monitoring.

The invention discloses a power grid flexibility resource scheduling method, device and equipment and a storage medium, and the method comprises the steps: determining an error change rate and a power gap value of a system according to an error between prediction data and actual measurement data of the output of a wind and light power station, and further determining a comprehensive imbalance risk assessment value of the system; determining the power compensation amount borne by the hydroelectric generating set according to the power gap value and the upward adjustment capacity of the thermal power generating set, and determining the dynamic response capability of the hydroelectric generating set by combining the available adjustment capacity of the hydroelectric generating set; determining a comprehensive risk index of the system based on the comprehensive imbalance risk assessment value and the dynamic response capability of the hydroelectric generating set; if it is determined that standby resources need to be reconfigured according to the over-limit amplitude of the comprehensive risk index of the system, the output adjustment amount and the scheduling priority sequence of all kinds of resources are determined based on the standby capacity values of the thermal power generating unit, the hydroelectric generating unit and the energy storage device so that power grid scheduling can be conducted. The safe and stable operation capability of the system is improved.

The invention discloses a distributed power supply-containing power distribution network coordinated scheduling method, which relates to the field of power distribution network coordination, and comprises the steps of S1, multi-flexibility resource refined modeling and interaction characteristic analysis, S2, power distribution network linear load flow calculation and sensitivity analysis, and after the power distribution network linear load flow calculation and sensitivity analysis in S2 are completed, carrying out power distribution network coordinated scheduling. And S3, generating an uncertainty scene based on the generative adversarial network. According to the coordinated dispatching method for the power distribution network containing the distributed power supply, differences of various resources in control modes, response speeds and adjusting capabilities are analyzed through refined modeling, complementary characteristics of the resources are fully utilized by a collaborative optimization model, an overall optimization effect is achieved, a single type of resources are not optimized in an isolated mode, and the method is suitable for large-scale popularization and application. All adjustable resources such as a distributed power supply, an energy storage system, a reactive power compensation device, a flexible load and an intelligent soft switch are incorporated into a unified modeling and optimizing framework, and deep fusion and collaborative interaction of flexible resources can be realized.

The invention relates to the technical field of electric power construction management, in particular to a full-chain-number intelligent construction collaborative management method and system based on electric power production. The method comprises the following steps: constructing a construction actual measurement parameter reverse mapping path, and reversely synchronizing a construction actual measurement data set to a design platform; structuring the change information in the debugging event log into measuring point mapping change data, and constructing a debugging change information reverse synchronization path based on a point construction loop three-way binding structure; constructing a dynamic transformer area operation portrait, introducing a transformer area deviation attribution identification model to compare the dynamic transformer area operation portrait with the static archive data to generate a transformer area operation deviation matrix, and dynamically adjusting a reactive power compensation control strategy and a load prediction model parameter; and performing unified archiving on the construction actual measurement data set, the measurement point mapping change data and the dynamic court operation portrait in real time. According to the invention, the reverse closed-loop collaborative management method for the whole life cycle of power production and construction is realized.

The invention provides a reactive compensation optimization method and system for a mining frequency conversion system, and the method comprises the steps: collecting the multi-dimensional data of the mining frequency conversion system, and carrying out the feature extraction and preprocessing, and obtaining the preprocessing data; the phase fast tracking module accurately obtains phasor parameters according to the preprocessed data, and the phasor parameters serve as input signals and are used for a phase locking ring to achieve phase and frequency locking of the mining frequency conversion system; constructing a multi-parameter fitness function by adopting a particle swarm algorithm, and dynamically calculating and searching an optimal control parameter combination; instantaneous reactive power and harmonic current are detected and analyzed in real time by adopting an instantaneous reactive power detection technology; the instantaneous reactive power and the harmonic current are input into a fuzzy PI controller, and dynamic error compensation is carried out in combination with the optimal control parameter combination; the static synchronous compensator controls output compensation current to complete reactive compensation and harmonic current treatment; compensation verification and feedback are carried out, and the electric energy consumption condition of the mining device is monitored and predicted in real time.

The invention relates to the related technical field of power control, in particular to a photovoltaic energy storage collaborative power balance compensation method, system and equipment, and the method comprises the steps: connecting a photovoltaic power station, and determining an amplitude characteristic parameter and a fluctuation characteristic parameter associated with a photovoltaic energy storage operation state; and configuring a power deviation feature vector and an energy storage response feature vector, outputting a quantitative evaluation decision unit vector, and if a preset threshold condition is met, triggering an energy storage adjustment instruction and linking the photovoltaic inverter to execute power correction operation. The technical problems that fluctuation data are processed only according to analysis or fixed filtering parameters of a single photovoltaic power signal, the characterization of the photovoltaic energy storage operation state is one-sided, and over-compensation or under-compensation is prone to occurring are solved, and a multi-mode characteristic extraction method is achieved through a photovoltaic and energy storage cross-equipment multi-mode characteristic extraction mechanism. The amplitude and fluctuation characteristic parameters are synchronously obtained based on the inverter and converter signals, the two-way quantity weight is dynamically coordinated, the power sudden change area is focused, the power compensation precision is improved, and the technical effects of guaranteeing stable operation of a power grid are achieved.

The invention provides a method and a system for evaluating, regulating and controlling operation stability and electric energy quality of an active transformer area based on edge calculation. The operation information such as low-voltage side voltage and current is collected through the area side edge calculation terminal, the indexes such as the load rate, the power factor, the three-phase unbalance degree, the voltage deviation and the voltage harmonic distortion rate are calculated, and the operation stability and the electric energy quality of the area are comprehensively evaluated after scoring according to a preset rule. And a distributed power supply, an energy storage device and a reactive power compensation device in the transformer area are regulated and controlled according to an evaluation result, so that the operation stability and the electric energy quality are improved. The method can comprehensively reflect the operation stability and the electric energy quality of the transformer area, and is beneficial to improving the operation stability and the power supply quality.

The invention provides a 10kV feeder reactive voltage optimization control method based on reactive compensation optimization stationing, which relates to the technical field of reactive voltage control, and comprises the following steps: constructing a 10kV feeder reactive optimization configuration model by taking loss reduction and investment cost reduction as targets; solving the reactive power optimization configuration model to obtain a reactive power compensation device optimization stationing scheme of the 10kV feeder line; constructing a 10kV feeder reactive power optimization control model according to the reactive power compensation device optimization stationing scheme; solving the reactive power optimization control model to obtain a reactive power optimization control scheme of the 10kV feeder line; and controlling corresponding equipment of the 10kV feeder line according to the reactive power optimization control scheme. According to the scheme, the reactive voltage control capability of the 10kV feeder line can be improved, and the reliability of stable operation of a power grid is further improved.

The invention relates to the technical field of power system control and energy storage, and discloses an active power compensation control method in a network following mode based on a direct-hanging energy storage converter system, and the method comprises the steps: calculating a frequency deviation between a load side instantaneous frequency and a rated frequency; calculating an initial active power compensation reference value according to the frequency deviation and the frequency deviation change rate; synchronously performing first-order inertial filtering and integral operation with amplitude on the initial active power compensation reference value to generate a final active power compensation instruction; adding the final active power compensation instruction and a preset steady-state active power reference value to obtain a total active power reference value of the converter; and taking the total active power reference value of the converter as a reference value of an active power outer ring, and generating a modulation signal of the converter through power control and current control. According to the invention, the virtual inertia link can suppress the rapid change rate of the frequency, and the virtual droop link provides steady-state power support, so that the energy storage system shows a friendly grid-connected characteristic similar to that of a synchronous generator.