41 results about "Power system stability control" patented technology

The invention discloses a configuration method and system for a network-constructing type energy storage system for suppressing broadband oscillation, and relates to the technical field of new energy power generation grid connection and power system stability control. The invention aims to solve the problems that broadband oscillation is easily caused when a new energy field station is connected into a weak power grid, an existing suppression method affects equipment characteristics or needs additional investment, and netting type energy storage locating and sizing lacks scientific guidance. The method comprises the following steps: firstly, simplifying a system comprising a new energy station, a constructed network type energy storage system and a power grid, then carrying out impedance modeling on the two systems (reserving complete impedance characteristics of energy storage), and judging the stability through an impedance analysis method; and the optimal capacity is determined at a single position, and then the global optimal capacity and the corresponding position are determined by traversing the positions, so that low-cost broadband oscillation suppression is realized.

The invention discloses a wind power plant network following / constructing type fan proportion optimization configuration method and device, a medium and a product, and belongs to the technical field of new energy power system stability control, and the method comprises the steps: collecting the operation data of a wind power plant and a power grid, and carrying out the standardization preprocessing; constructing a typical operation scene set based on the preprocessed data; establishing an equivalent model of a following network type fan and a construction network type fan and a coupling model with a power grid; constructing a frequency, voltage and transient stability index system based on the coupling model; designing constraint conditions containing stability indexes; constructing a multi-objective optimization function with stability priority; solving by adopting a global optimization algorithm to obtain an optimal fan proportion solution set; and performing simulation verification and scheme screening on the optimal solution set, and determining a final configuration proportion. On the premise of ensuring the stability of the power grid, the proportion of different types of fans in the wind power plant is scientifically configured, and the safe and stable operation capability of a high-proportion new energy power system is effectively improved.

The invention discloses a high-proportion new energy sending end power grid stability cooperative control method, and relates to the technical field of power system stability control, and the method comprises the steps: S1, building an AC / DC sending end power grid temporary overvoltage model; s2, establishing a transient voltage stability model of the alternating-current and direct-current sending-end power grid; s3, establishing a transient stability model of the phase modifier; s4, constructing a multi-dimensional stability collaborative improvement objective function; s5, establishing a multi-dimensional stability collaborative improvement constraint condition; and S6, solving based on the multi-objective optimization function constructed in the step S4 and the constraint conditions constructed in the step S5. According to the method, a multi-dimensional analysis model of'temporary overvoltage-transient voltage stability-phase modifier power angle stability 'is constructed, so that the functions of unified modeling and collaborative optimization are realized, and multiple stability risks and dominant factors thereof faced by a power grid in different fault scenes can be accurately and quantitatively evaluated; and a clear theoretical basis and target are provided for implementing cooperative control.

The invention discloses a broadband oscillation active damping method, system and device based on MMC sub-module cluster collaboration and a storage medium, and relates to the technical field of power system stability control, and the method comprises the steps: collecting the electrical quantity of a power grid in real time, and recognizing a broadband oscillation mode and characteristic parameters through a signal processing algorithm; equivalent circuit parameters of the programmable virtual resonator are calculated, and the number of sub-modules of a sub-module cluster is determined in combination with the real-time states of the sub-modules of the modular multilevel converter; generating a control instruction according to the parameter and the oscillation component, and adjusting a sub-module pulse width modulation signal; oscillation amplitude attenuation, a damping ratio and a sub-module state are continuously monitored, adjustment is performed according to an evaluation result, and safe operation is ensured; the method can accurately suppress power grid oscillation, improves the utilization rate of the MMC device, saves the cost, is high in self-adaption, guarantees the reliable operation of the system, reduces the loss, is easy to expand and maintain due to the modular design, and improves the stability of the power system.

The present application relates to the technical field of power system stability control, and is a steady-state voltage control method and system for reducing transient voltage instability risk of a new energy collection station, the method comprising: establishing a new energy collection station bus transient voltage model of a new energy sending end power grid after a DC bipolar blocking fault; setting a new energy collection station transient voltage instability limit of the new energy sending end power grid after the DC bipolar blocking fault; and setting a steady-state voltage control threshold for reducing the transient voltage instability risk of the new energy collection station bus based on the new energy collection station bus transient voltage model. The present application can achieve the purpose of reducing transient voltage instability risk by controlling the steady-state operating voltage of a high-proportion new energy sending end power grid without increasing dynamic reactive power compensation equipment. The present application is used to solve the problem of transient voltage instability caused by new energy off-grid of a new energy collection station of a DC sending end power grid after a DC fault due to excessively high transient voltage caused by excessively high steady-state operating voltage of the power grid.

The present application relates to the technical field of power system stability control simulation analysis, and provides a transient simulation analysis and decision method, device and equipment for power grid harmonic oscillation, which comprises the following steps: combining the model and model parameters of electromagnetic transient offline simulation with the topology of the power grid to be analyzed to obtain an electromagnetic transient example, and then describing the calculation process of electromagnetic transient with a hierarchical directed acyclic graph, and taking each calculation model with redistributed resources as the electromagnetic transient algorithm; performing risk analysis on the harmonic oscillation condition according to the simulation result, and making an optimized decision on the harmonic oscillation suppression measures; through example design and electromagnetic transient algorithm design, an electromagnetic online simulation model is constructed to meet the simulation requirements of large power grids and realize the analysis and suppression decision of harmonic oscillation.

The present application relates to the technical field of power system stability control, and particularly relates to a high-proportion wind power access system wide-frequency oscillation suppression method based on impedance shaping. The content comprises: constructing a frequency domain output impedance matrix, extracting a dominant wide-frequency oscillation coupling mode frequency band, introducing a mode suppression driven impedance shaping compensation mechanism, constructing a mode suppression driving quantity based on the mode direction in the dominant wide-frequency oscillation coupling mode, and performing local impedance shaping on the output impedance; based on the mode suppression driving quantity, quantifying the mode interference sensitivity between wind power converters, and introducing an impedance shaping gain correction mechanism based on the mode interference sensitivity, to correct the target output impedance after local shaping. The problems that the shaping process cannot effectively adjust dynamically according to the equipment capacity of the wind power converter and the frequency risk, resulting in no difference shaping and excessive compensation, and the problems that the interference coupling between the wind power converters cannot be effectively suppressed, resulting in excessive oscillation or suppression are solved.

This application relates to the field of power system stability control technology, specifically to a method and system for online stability assessment and control of hybrid systems based on an improved short-circuit ratio. The method includes: constructing an equivalent model of the integrated / grid-connected hybrid system; calculating the improved short-circuit ratio of multiple renewable energy power plants based on the voltage source characteristics of grid-connected equipment to quantify the grid strength at each grid connection point; constructing a characteristic polynomial based on the impedance matrix; and using the circular loop theorem to quickly search for the dominant eigenvalues, avoiding high-dimensional calculations, to obtain the critical short-circuit ratio. If the real-time short-circuit ratio is lower than the critical value, an instability risk is determined, triggering a control strategy that increases the capacity of grid-connected equipment or adjusts the grid connection point. This method, through the combination of the improved short-circuit ratio and the circular loop theorem, achieves online quantitative assessment and closed-loop control of the small-disturbance stability of integrated / grid-connected hybrid systems.

The invention discloses a wind storage automatic power generation control optimization method, and relates to the technical field of power system stability control, and the method comprises the steps: constructing an automatic power generation control model containing a wind turbine generator and an energy storage system, introducing a per-unit coefficient by the wind turbine generator through droop adjustment and a virtual inertia response strategy, and building an open-loop transfer function, the energy storage system adopts a first-order inertial model; constructing an improved MPC control model fused with the PIDN, connecting a feedforward control component of the MPC with a feedback control component of the PIDN in parallel, and generating a unified control signal to drive a wind turbine generator and an energy storage system to perform power adjustment; and carrying out global optimization on model predictive control MPC parameters by adopting an STOA algorithm and taking ITAE indexes of frequency deviation and tie line power deviation as optimization targets. According to the method, the system frequency stability and the power regulation precision are effectively improved, and the dynamic performance and the robustness of wind and storage combined participation in automatic power generation control are enhanced.

The invention belongs to the technical field of stable control of a power system, and particularly discloses a power angle compensation-based method for quickly recovering active power after a fault of a network-forming converter, which comprises the following steps of: monitoring a voltage amplitude and a power difference value at a grid-connected point of the network-forming converter in real time; according to the voltage amplitude and the power difference value, identifying whether the network-forming converter is in an unstable state of active power oscillation after the fault is cleared; if the state is identified as an unstable state, calculating a power angle compensation amount used for counteracting power angle deviation caused by a fault based on detected voltage drop information and system impedance parameters; and superposing the power angle compensation value to a power angle generated by a power control ring of the network-forming type converter, and generating a compensated power angle instruction for controlling pulse modulation of the converter so as to realize active power recovery after the fault is cleared. The method can adapt to different power grid impedance conditions, quickly suppress power oscillation and realize quick recovery of active power, so as to improve the transient stability and reliability of a novel power system.

The invention relates to the technical field of power system stability control, and provides a new energy black-start partition optimization method considering unconventional risks, which comprises the following steps: simulating unconventional risks possibly encountered by a power system by adopting Monte Carlo sampling; extracting the output characteristics of wind power under the unconventional risk by adopting variational mode decomposition, and performing output prediction in combination with a long-short-term memory neural network; a power system recovery partition is divided based on an LPA algorithm, and the LPA algorithm is improved by considering a partition size balance principle, so that the partition area is more balanced, and the tag oscillation effect is reduced. According to the method, the black-start partition optimization model fusing new energy output uncertainty modeling and unconventional risk scene generation is designed, and the partition scheme is cooperatively solved by adopting the improved label propagation algorithm, so that the robustness and the recovery efficiency of the black-start partition are effectively improved; and rapid and stable power supply of a power system under complex disturbance can be realized.

The invention discloses a hybrid power system continuous dynamic-discrete strategy double-layer parallel simulation architecture which comprises a plurality of modules distributed in a master process and a slave process, the master process is used for simulating and solving a continuous subsystem model and controlling an overall simulation time sequence, and the slave process is used for simulating and solving a discrete subsystem model. The master process comprises a clock control module, a discrete event processing module, a continuous model grouping parallel module and a continuous state sending module, the slave process comprises a continuous state receiving module, a discrete model grouping parallel module and a discrete event sending module, and a shared memory module is set as an interaction channel of the master process and the slave process. According to the method, the simulation efficiency of the hybrid power system is effectively improved on the premise of ensuring the accuracy of a simulation time sequence through consecutive discrete subsystem parallelism and model grouping parallelism in the subsystems. The framework can be applied to hybrid power system simulation fields such as cascading failure analysis, power system stability control system checking and the like.

The invention discloses a low-frequency load shedding control method and device, terminal equipment and a storage medium, and belongs to the field of power system stability control analysis, and the method comprises the steps: obtaining a frequency modulation coefficient and a low-frequency load shedding frequency action value corresponding to each load when distributed photovoltaic participates in frequency modulation, and collecting the system active disturbance data of a current power grid; inputting the system active disturbance data and the low-frequency load shedding frequency action value into a preset power grid comprehensive active control model, so that the power grid comprehensive active control model outputs a low-frequency load shedding total control quantity according to the system active disturbance data; and according to the total low-frequency load shedding control quantity and the frequency modulation coefficient corresponding to each load, initializing and solving a low-frequency load shedding optimal control model taking maximization of the frequency modulation performance gain as an optimization target, and determining and performing low-frequency load shedding control according to the optimal low-frequency load shedding control quantity of each load. According to the invention, the total control quantity of the low-frequency load shedding in the distributed photovoltaic scene can be accurately calculated, and the optimal load shedding distribution control among the loads can be realized.

This invention relates to the field of power system stability control technology, and is a wind power converter control method and system for reducing the risk of transient voltage instability at wind power collection stations. The method includes: establishing a transient voltage model of the wind power collection station in the renewable energy sending-end grid after a DC bipolar blocking fault; establishing a reactive power control model of the wind power converter under the transient voltage control mode based on active power output; and setting transient voltage instability limits for the wind power collection station in the renewable energy sending-end grid after a DC bipolar blocking fault. This invention can fully leverage the rapid reactive power control advantages of the wind power converter when the transient voltage instability risk of the wind power collection station is caused by the UHVDC bipolar blocking in the renewable energy sending-end grid, thereby reducing the peak transient voltage of the wind power collection station, preventing the wind farm units connected to the wind power collection station from tripping and disconnecting from the grid due to high voltage ride-through failure, thus reducing the risk of transient voltage instability at the wind power collection station and improving the transient voltage stability of the system.

This invention discloses a flywheel-battery hybrid energy storage method and system for suppressing grid power oscillations, relating to the field of power system stability control technology. It includes: acquiring the real-time rotor speed of the flywheel energy storage unit; generating a first power command based on the deviation from a preset rated speed; determining whether the real-time rotor speed is within a preset speed range; if it exceeds the limit, generating a second power command to control the battery energy storage unit to charge and discharge at a constant power; if it is within the range, generating a third power command based on the DC bus voltage deviation; and controlling the battery to execute the commands based on priority arbitration logic, with the second power command having higher priority than the third power command. This invention addresses the problems of existing centralized control architectures heavily relying on complex communication, experiencing response delays, and batteries suffering from shallow charging and discharging and rapidly declining lifespan due to frequent tracking of power oscillations.

The present application relates to the technical field of power system stability control, and particularly relates to a power system stability control method based on input and output data optimization control parameters. The method first collects power system input data, output data and oscillation response data; then constructs a parameterized stability controller with several undetermined coefficients, and sets the initial value of the to-be-optimized coefficients; then superimposes the controller output to the additional control channel of the controlled object, constructs an optimization function with the minimum system oscillation as the target, and sets the constraint condition that the average value of the parameters is 0, so as to ensure that the controller output is 0 after the oscillation disappears; then iteratively updates the to-be-optimized coefficients under the constraint condition by using an optimization algorithm, and obtains the target control coefficients; finally, writes the optimized target control coefficients into the parameterized controller, and forms the final stability controller. The simulation results show that the present application can effectively suppress the subsynchronous oscillation and low-frequency oscillation of the synchronous generator, reduce the oscillation amplitude, and speed up the oscillation decay process.

The invention discloses an inertia simulation method based on a super capacitor, which belongs to the technical field of power system stability control and comprises the following steps: acquiring a power grid frequency signal; generating an inertia power instruction according to the power grid frequency signal; and controlling a super capacitor to exchange energy with a power grid through a bidirectional DC-DC converter and an inverter according to the inertia power instruction so as to simulate inertia response of the synchronous generator. According to the method, low-frequency load shedding and capacitor overstress are effectively avoided, and the transient frequency stability of a low-inertia power grid is remarkably improved.

The invention relates to the technical field of power system stability control and new energy grid connection, in particular to a method for evaluating the capability of improving the transient stability of a power grid through network construction type energy storage, and the method comprises the steps: collecting data, and obtaining a high-quality data source through time synchronization and quality evaluation; constructing a digital twinborn simulation environment; injecting an optimized excitation signal in a simulation environment, and identifying hidden coupling mode characteristics between virtual inertia control and a power grid oscillation mode by adopting a tensor decomposition method; inputting the features into a deep reinforcement learning agent to explore optimal control parameters, and establishing an agent model by adopting a meta-model optimizer to predict a Pareto frontier; and generating a comprehensive evaluation report containing a transient stability boundary, a risk map, a parameter feasible region and a self-adaptive strategy through high-fidelity verification and calibration of the intelligent agent and the meta-model, and integrating the comprehensive evaluation report to an energy storage control system and a power grid energy management system. According to the method, the problem of stable boundary quantization misalignment caused by implicit coupling is effectively solved.

The invention relates to the cross technical field of new energy power generation and power system stability control, in particular to a static var generator control method suitable for suppressing load power oscillation, which comprises the following steps: synchronously acquiring instantaneous voltage and current at a load end, calculating load instantaneous impedance, an impedance effective value and a change rate thereof, and calculating the load power oscillation. Constructing a virtual impedance and negative feedback damping mechanism based on the impedance change rate, finally generating a reactive current instruction with a dynamic damping characteristic, and controlling the SVG to inject reactive power when the load impedance is increased and absorb reactive power when the impedance is decreased; according to the invention, the impedance disturbance suppression module is additionally arranged in the SVG control system, so that source suppression of load power oscillation is realized.

The application provides a coupling power system stability control strategy collaborative control method, device, equipment and readable storage medium, which can be used for a stability control master station of a power system, especially a wide-area collaborative stability control master station. When multiple coupling stability control strategies exist in the power system, such as a stability control strategy triggered locally by the power system and a strategy for processing a remote control command simultaneously or sequentially exporting an action command in a short time and acting on the same group of controlled objects, the collaborative control of the multiple stability control strategies can be realized through a coordination mechanism independent of the stability control strategies, without changing the related strategies or changing other strategies after the partial strategies are updated, so as to reduce the under-tripping and over-tripping risks of the stability control master station of the power system when the coupling strategies exist, reduce the design difficulty of the stability control strategy collaborative control, reduce the mutual influence of the strategy and device updating, effectively realize that the total control amount result is controlled reasonably, and neither cause over-control nor cause loss of control, which harms the stability of the power system.

The invention belongs to the technical field of power system stability control, and particularly discloses a power system damping adjustment method based on the relation between current errors and phase locking errors. The method comprises the following steps: performing phase-based Park conversion on a current error dq component under a current d-axis directional terminal voltage rotating vector phase-locked coordinate system, and determining first compensation information corresponding to an active current error and / or second compensation information corresponding to a reactive current error; performing compensation and phase locking control on the phase locking error according to the first compensation information and / or the second compensation information, and determining a current instantaneous phase of the d-axis directional terminal voltage rotation vector phase locking coordinate system; performing dq / abc coordinate transformation based on the current instantaneous phase on the current internal potential dq component to obtain a three-phase internal potential instruction; and adjusting the three-phase internal potential of the converter grid-connected equipment according to the three-phase internal potential instruction. According to the invention, the broadband oscillation of the system can be effectively suppressed.

This invention belongs to the field of power system stability control technology and discloses a method for assessing the frequency support strength of a power grid based on inertial response and primary frequency regulation coordination. It constructs typical operating modes and a set of anticipated faults based on power grid planning data, obtains the frequency response trajectory through time-domain simulation, and extracts frequency change rate, minimum frequency, and steady-state frequency deviation characteristics. Based on power grid safety and stability guidelines, it establishes safety boundary values ​​for the frequency change rate and minimum frequency adapted to the current scenario. It constructs a comprehensive evaluation function including inertia, frequency regulation speed, and capacity strength, and introduces configurable dynamic weighting coefficients to calculate the comprehensive frequency strength evaluation index S. Based on the dual criteria of boundary non-exceeding limits and the comprehensive frequency strength index S≥1, it determines system safety and identifies weak links in scenarios that do not meet the requirements. This invention can effectively quantify the frequency support capability of the power grid under different planning schemes, providing a basis for grid optimization and resource allocation in high-proportion renewable energy power grids.

The present application relates to the technical field of power system stability control, and discloses a method for adaptive suppression of subsynchronous oscillation of grid-constructed energy storage system. The method comprises the following steps: identifying an energy storage cluster based on power grid topology data; monitoring the frequency in the cluster and extracting electrical parameters such as impedance spectrum and power waveform to generate a cluster oscillation characteristic vector; constructing a global oscillation sensitivity distribution map based on the characteristic vector, and then guiding a movable oscillation suppression robot to a key position to perform damping operation. In the suppression process, the distribution map is updated in real time according to system feedback, and the robot action strategy is dynamically adjusted. The method changes the fixed damping into a movable suppression resource in space, and improves the decision basis from local static information to global dynamic situation map, realizes adaptive tracking and accurate damping of subsynchronous oscillation hotspots, and improves the flexibility and reliability of oscillation suppression in complex power grid environment.

This invention discloses a control method for improving the transient stability of doubly-fed induction generator (DFIG) wind turbine systems connected to the grid, belonging to the fields of wind power grid connection technology and power system stability control technology. First, a reduced-order model of the system is established to accurately reflect the dynamic behavior during low-voltage ride-through. Based on this model, the attraction domain boundary and maximum power angle constraint are obtained, and then adaptive current reference control is proposed: the rotor d-axis current limit is calculated based on the maximum power angle constraint and the grid voltage, and compared with the original reference generated by maximum power point tracking. The smaller value is taken as the command to achieve adaptive limiting of the rotor current. Simultaneously, transient pitch collaborative control is proposed: the rotor speed is monitored in real time, and when the speed exceeds the safe upper limit, a transient load reduction power command is calculated and the pitch angle is rapidly increased to reduce mechanical torque. This invention can significantly enhance the fault ride-through capability and grid-connected operation reliability of DFIG wind turbines during transient processes such as voltage dips.

The invention relates to the technical field of new energy power system stability control, in particular to a three-dimensional spectrum-based network construction capacity ratio optimization method and system, and the method comprises the steps: determining the total capacity of a network-following converter and a network construction converter; establishing a multivariable equivalent admittance model, wherein the multivariable equivalent admittance model comprises a network construction capacity proportioning coefficient and frequency; based on the multivariable equivalent admittance model, drawing a three-dimensional amplitude-phase characteristic curved surface diagram; positioning an amplitude phase equivalence plane in the curved surface diagram, and obtaining a stability margin distribution rule corresponding to the network construction capacity proportioning coefficient; according to a stability margin threshold value and a stability margin distribution rule, determining a minimum value of a network construction capacity proportioning coefficient; and by taking the minimum value of the network construction capacity proportioning coefficient as a design reference, selecting a target network construction capacity configuration parameter to carry out system construction, and verifying the stability of the system through dynamic simulation. According to the method and the device, the problem of redundancy or instability risk of capacity configuration of the network construction type converter caused by dependence on the preset stability margin threshold is effectively solved.

The invention discloses an asynchronous phase modifier control system and method based on vector control and an improved strategy, and belongs to the technical field of power system stability control. In order to solve the problem of voltage and frequency stability caused by inertia loss and insufficient reactive support in a high-proportion new energy power system, the asynchronous phase modifier comprises an asynchronous phase modifier body, a stator is connected to a power grid, and a rotor is connected to the power grid through a back-to-back converter; the vector control unit adopts a rotor side converter control strategy based on stator voltage orientation to realize decoupling control of active power and reactive power; the transient state improvement control unit is used for improving the rotor side current controller by compensating the differential item change of the stator current when the voltage of the power grid drops; the resonance control unit adopts a quasi proportional integral resonance (PIR) controller to restrain frequency doubling pulsation when the voltage of the power grid is unbalanced; and the grid-connected interface is configured at a 35kV bus of the new energy station. The method is used for new energy power generation.

This invention provides a method for calculating energy storage reserve capacity based on the coordination of wind power and energy storage in the sending-end power grid, relating to the field of power system stability control technology. This invention connects large-scale wind power and energy storage equipment to the renewable energy sending-end power grid and constructs a sending-end system by equivalently representing multiple generators. Then, it constructs a transient power fluctuation curve after adding energy storage. For multiple fault scenarios in the sending-end system, it sets a dynamic safety domain boundary for each fault scenario and determines the hyperplane normal vector. Then, based on the power at the injection point, it determines whether the injection point of the sending-end system is outside the safety domain. When the injection point is outside the safety domain, the energy storage reserve capacity is calculated. Thus, this invention connects large-scale wind power and energy storage equipment to the renewable energy sending-end power grid, realizing the analysis of the transient stability of the sending-end system and thereby calculating the energy storage reserve capacity.

The invention belongs to the technical field of power system stability control, and particularly discloses an optimization method for ultralow frequency oscillation damping characteristics of a one-pipe double-machine type pumped storage power station. The method comprises the following steps: firstly, constructing a kinetic model of the one-pipe double-machine pumped storage power station; analyzing the stability of the model by using Hopf bifurcation, and determining critical parameters and dividing a stability domain through a Jacobian matrix eigenvalue; introducing a stability margin to quantify the stability, and analyzing a first influence of different working condition points on the oscillation frequency and the damping ratio under the same stability margin; obtaining a second influence of the parameter on the oscillation frequency and the damping ratio through sensitivity analysis; and constructing a three-dimensional curved surface of the oscillation frequency, the damping ratio and the control parameters based on the two influences, dividing an equal-frequency area and an equal-damping-ratio area on the three-dimensional curved surface under the stable allowance working condition, and identifying the optimal control parameters from the equal-frequency area and the equal-damping-ratio area. Optimized identification of the key parameters is realized, and support and guidance are provided for suppressing ultra-low frequency oscillation of the pumped storage power station and improving safe and stable operation of the system.

The invention relates to the technical field of large motor driving and power system stability control, in particular to a driving system and method for driving a large motor through a variable-frequency micro-grid, and the system comprises a single main transformer, an energy storage DC voltage stabilization module, a static variable-frequency starting device, a plurality of isolation transformers, an excitation module and a central control module, and employs N + 1 redundancy configuration. The method comprises the five steps of system initialization, energy storage voltage stabilization starting, interference electricity emergency protection, power grid recovery switching and redundancy guarantee operation, through hardware cooperation and algorithm optimization, impact-free starting, circulation-free operation and minute-level interference electricity resistance of a motor are achieved, the method is adaptive to the steam-to-electricity scene of an MW-level large compressor unit, and reliability and economical efficiency are both achieved.

The application relates to the technical field of power system stability control, and discloses a flywheel energy storage array control method for load suppression, which comprises the following steps: acquiring real-time data such as bus voltage deviation, flywheel rotating speed threshold value, topological structure and target suppression indexes, and determining the indexes by extracting load fluctuation main frequency components through a spectrum analysis model; generating a characteristic vector by wavelet transformation on the data, inputting the characteristic vector into an adjustment parameter prediction model based on a dynamic coordination algorithm, calculating a dynamic correction coefficient in combination with flywheel mechanical inertia parameters, and optimizing control parameters such as torque compensation and switching frequency; adjusting the array operation state according to the parameters, setting fault emergency treatment steps, and realizing topological reconstruction and torque smooth transition. The method improves load suppression precision and system reliability through space-time graph convolution network modeling, mechanical characteristic dynamic correction and full-closed-loop control, and is suitable for power grid stability control scenes.