127 results about "Synchronous condenser" patented technology

The invention provides a non-intrusive diagnosis method for typical rotor faults of a synchronous phase modifier, and the method comprises the steps: carrying out finite element modeling and fault working condition setting, carrying out simulation to obtain magnetic field distribution data under each working condition, carrying out the extraction and feature analysis of stray magnetic field signals, extracting time domain and frequency domain signals of a stray magnetic field under healthy and various fault working conditions, and carrying out the diagnosis of the typical rotor faults of the synchronous phase modifier. Fundamental wave, odd-even harmonic components and signal change trends are compared and analyzed, stray magnetic field characteristics corresponding to faults are extracted and recognized, diagnosis criterion establishment and fault recognition are carried out, diagnosis criteria and threshold values of rotor turn-to-turn short circuit, dynamic eccentricity and shaft-diameter composite eccentricity faults are established according to the stray magnetic field characteristics, and the fault diagnosis accuracy is improved. And when the specific harmonic amplitude or change characteristic of the stray magnetic field signal exceeds the criterion threshold, determining the rotor fault of the corresponding type and degree. Equipment dismounting or structure reconstruction is not needed, the detection system is simple in structure, internal fault characteristics of the phase modifier can be reflected in real time, and high sensitivity and practicability are achieved.

The invention provides a super-capacitance multi-branch equalization method and system for a network-forming type static synchronous phase modifier. The method comprises the following steps: acquiring current data of each super-capacitance branch in the network-forming type static synchronous phase modifier; based on the current data of each super-capacitance branch, outputting voltage drop data of each super-capacitance branch by using a proportional-integral controller; according to the voltage drop data of each super-capacitance branch, generating a correction modulation wave of each super-capacitance branch; according to the correction modulation waves of all the super-capacitance branches, voltage control is carried out on the net-forming type static synchronous phase modifier; according to the invention, the voltage control is carried out on the network-forming type static synchronous phase modifier through the correction modulation wave generated according to the branch voltage drop data output by the proportional-integral controller, and the dynamic adjustment can be respectively carried out for the voltages of different super-capacitance branches, thereby facilitating the reduction of a circulation phenomenon caused by voltage imbalance, and improving the reliability of the network-forming type static synchronous phase modifier. And unnecessary energy loss and overheating can be avoided, and the service life of equipment is prolonged.

The invention relates to the technical field of power system stability control, and discloses a hybrid synchronous phase modifier quick response coordination control system with inertia support. According to the invention, wide-area data such as voltage phase, frequency deviation and the like are collected and verified through the data sensing module; the modal evaluation module calculates a global motion modal cooperation coefficient G to quantify the dynamic cooperation degree of the system; the coordination control module dynamically switches an emergency instability or preventive damping mode based on G, and generates a coordination control instruction of the phase modifier and the SVG; and the execution feedback module forms a closed loop and optimizes parameters, and realizes efficient response in combination with a layered distributed architecture. According to the invention, deep cooperative control of the two is realized, the disturbance resistance and stability maintenance capability of the power system are improved, and the method is suitable for a power grid with high-proportion renewable energy access.

The invention belongs to the technical field of safety and stability of a power system, and relates to a coordinated operation method and system of a distributed phase modifier and a network-forming SVG (Static Var Generator). According to the invention, by obtaining the current-limiting critical voltage coefficient and the equivalent critical voltage coefficient, the cooperative operation effect of the distributed phase modifier and the network-forming SVG and the supporting capability of the system voltage support are improved; when the residual voltage coefficient is smaller than the equivalent critical voltage coefficient, the reactive power supporting capacity provided by the phase modifier is high, the phase modifier is smoothly put into operation, and the impact on the system caused by the put-in of the phase modifier is reduced; when the residual voltage coefficient is greater than the equivalent critical voltage coefficient, the phase modifier starts to smoothly exit from operation, and the impact on the system caused by the deduction of the phase modifier is reduced; and when the residual voltage coefficient is greater than the current-limiting critical voltage coefficient, the networking SVG quits the current-limiting link, the phase modifier completely quits operation, and the margin of transient reactive power regulation of the system is improved. According to the invention, safe and effective cooperative work of the network-forming SVG and the distributed phase modifier is realized.

The utility model relates to the technical field of power equipment monitoring and control, and discloses a synchronous phase modifier integrated monitoring device, which comprises a phase modifier, and a data acquisition device, a data fusion device, an intelligent analysis device, a fault diagnosis device and a linkage control device which are connected with the phase modifier, the phase modifier is connected with the data acquisition device through a shielding signal cable and is used for acquiring operation data; the data acquisition device is connected with the data fusion device through an industrial bus and is used for realizing real-time uploading of acquired data; the data fusion device is respectively connected with the intelligent analysis device and the fault diagnosis device through the Ethernet, and is used for converting the dispersedly collected parameters into standardized fusion data; the intelligent analysis device and the fault diagnosis device are connected with the linkage control device through wires and used for outputting early warning information and fault handling instructions. The device manages data in a unified manner, replaces manual summarization, improves monitoring efficiency, prejudges hidden dangers, gives an early warning in advance, avoids fault accumulation, and guarantees operation of the phase modifier.

The invention discloses a superconductive phase modifier excitation power unit with adjustable top value voltage and a control method thereof, and the power unit comprises the following modules which are connected in sequence: the input end of a PWM rectifier module is connected with an excitation power supply, and AC / DC conversion is carried out on the input voltage of the excitation power supply; the DC bus support capacitor module realizes output DC voltage support of the PWM rectifier module; the DC chopper module realizes DC / DC chopping output of the DC bus voltage according to the excitation requirement of the generator; the voltage smoothing module is used for smoothing and filtering the chopping pulse voltage output by the direct current chopper module; and the output end of the voltage commutation module is connected with the superconducting rotor and is used for realizing rectification of rotor excitation current and conversion of an inversion loop. According to the technical scheme, the excitation voltage and the excitation current can be adjusted stably in the steady state, the effect of the high excitation multiple can be exerted in the transient state and the dynamic state to improve the quick response capacity of the system, and meanwhile the excitation inversion capacity is achieved to achieve quick reduction of the excitation current.

The invention relates to the technical field of phase adjustment, and discloses a synchronous phase modifier phase modulation method adopting a digital twinborn model, and the method comprises the steps: carrying out the modularization processing of a synchronous phase modifier, and obtaining a system module; identifying a power grid topological structure of the power system, and collecting load data, generator data and line parameters of the power system to construct a simulation model of the power system; integrating the system module and the simulation model to obtain an integrated model; performing impedance adjustment on the module integration system to obtain an impedance adjustment model; collecting system data of the synchronous phase modifier, and analyzing control characteristics of the synchronous phase modifier; and executing the phase adjustment reference of the impedance adjustment model by using the control characteristics, obtaining a digital twin model when the model precision meets the preset model precision, analyzing the real-time power data by using the digital twin model, and performing phase adjustment on the power system based on the analysis result. The accuracy of phase adjustment of the synchronous phase modifier can be improved.

The invention relates to the technical field of safe operation of power systems and motors, and particularly discloses a method for calculating a safe operation boundary of a high-inertia energy storage type phase modifier under a fault, and the method comprises the steps: building an electromagnetic field calculation model of a two-dimensional linear part and a three-dimensional end part region according to an electromagnetic design scheme of the high-inertia energy storage type phase modifier; establishing a frequency and voltage support excitation control system of the high-inertia energy storage type phase modifier, carrying out bidirectional dynamic coupling on the excitation control system and the electromagnetic field calculation model, and obtaining the frequency and voltage of a power grid through a phase-locked loop; determining the loss value of each structural member in the fault process through an electromagnetic field calculation model; according to the ventilation system structure of the high-inertia energy storage type phase modifier, a fluid and thermal coupling calculation model is established, and the loss value of each structural member is used as a heat source to be introduced into the fluid and thermal coupling calculation model; and determining the safe operation limit time of the high-inertia energy storage type phase modifier under the system frequency or voltage fault according to the maximum temperature rise allowed by each structural member.

The application discloses a superconducting synchronous phase modifier excitation power supply device, which comprises a three-phase rectifying device, an adjusting module, a protection module and a digital control module, wherein the three-phase rectifying device is used for providing a bus side DC voltage; the adjusting module is used for adjusting an excitation total current; the protection module is used for ensuring safe operation of the device; and the digital control module is used for realizing high-precision continuous adjustment of excitation winding voltage and current. The superconducting synchronous phase modifier excitation power supply device solves the problem of unbalanced reactive output of the superconducting synchronous phase modifier caused by large excitation current ripple, and improves the reliability of the superconducting synchronous phase modifier.

The invention discloses an energy storage type phase modifier with a damping structure and a system, and belongs to the technical field of electric power equipment. The brush doubly-fed motor comprises a stator and a rotor. An air gap is formed between the stator and the rotor; three-phase symmetrical windings are arranged in the stator and the rotor; the damping structure is made of an electric conductor material and is arranged along the circumference of the notch of the rotor; the damping structure can be equivalent to a three-phase winding, and in the equivalent three-phase winding of the damping structure, each phase is self-short-circuited. The damping structure optionally comprises at least one of the following structures: a slot wedge made of an electric conductor, a cage bar and an end ring. According to the invention, the energy storage type phase modifier has the capabilities of suppressing the excitation current peak value and improving the short-circuit current on the premise of ensuring the high inertia supporting function, so that an excitation system is effectively protected, and the short-circuit voltage supporting capability of the motor is enhanced.

The present application discloses a method, device, electronic device and medium for estimating parameters of a synchronous condenser, which is applied to the field of synchronous condenser operation. The method provided by the present application includes: obtaining the operating data of the synchronous condenser before and after the load shedding respectively; preprocessing the operating data to obtain the incremental per-unit value corresponding to the operating data; determining the corresponding first-order integral value and second-order integral value according to the incremental per-unit value; determining the preliminary parameter value of the synchronous condenser according to the first-order integral value, the second-order integral value and the incremental per-unit value; and correcting the preliminary parameter value using the auxiliary variable method to obtain the target parameter value of the synchronous condenser. It can be seen that the step of determining the second-order integral value of the present application is applicable to the scenario where the excitation voltage changes during the load shedding period. At the same time, this method does not require a long measurement time, does not require providing the initial value of the parameter, does not require iteration, takes into account the change in the excitation voltage, has high parameter estimation accuracy, and is highly versatile and practical.

The embodiment of the invention provides a method and equipment for determining a power system configuration scheme and a medium. The method comprises the following steps: determining the initial inertia of a system; if the initial inertia of the system is smaller than the inertia demand value, the reactive response capability of each new energy node is calculated, and a first node is determined; if the first node is different from the previous configuration scheme, taking a new energy node of which the short-circuit ratio is smaller than a short-circuit ratio threshold value as a second node after simulating to carry out network construction type transformation on the first node; determining a current configuration scheme and a corresponding configuration cost; after the second node is simulated to be subjected to synchronous phase modifier configuration, the initial inertia of the system is determined again, and the step of judging whether the initial inertia of the system is larger than or equal to the inertia demand value or not is executed again; and if the first node is the same as the previous configuration scheme, selecting the scheme with the lowest configuration cost. According to the scheme, various configuration schemes of the new energy power system can be determined, the scheme with the lowest cost is selected as the target configuration scheme, and the economical efficiency of system transformation is guaranteed.

A microgrid system includes a common bus; a generator electrically connected to the common bus, the generator comprising a prime mover; a generator stator; and a generator rotor coupled to the prime mover. The generator rotor and the prime mover have a combined generator rotational moment of inertia and the prime mover is configured to rotate the generator rotor relative to the generator stator at a system angular velocity to generate electricity The synchronous condenser includes a synchronous condenser rotor with a synchronous condenser rotational moment of inertia The synchronous condenser rotor is configured to rotate at the system angular velocity in response to rotation of the generator rotor. The microgrid system has a combined system rotational moment of inertia including the generator rotational moment of inertia and the synchronous condenser rotational moment of inertia, wherein the system rotational moment of inertia resists deviation of the system angular velocity.

The invention discloses a synchronous phase modifier fault diagnosis method based on a knowledge graph and a large language model, and the method comprises the steps: obtaining the operation data of a synchronous phase modifier, and carrying out the preprocessing of the operation data, so as to form a unified corpus and a standardized data set; based on the unified corpus, using a BERT model to encode the corpus to obtain context perception vector representation, and based on the context perception vector representation, performing sequence labeling and relation extraction, and outputting structured knowledge data; based on the structured knowledge data, constructing a synchronous phase modifier fault diagnosis knowledge graph; based on a pre-trained large language model, performing model training and optimization by using the standardized data set, understanding and analyzing a fault phenomenon described by a natural language, and outputting a semantic analysis result; and in combination with the output of the knowledge graph and the semantic analysis result, performing hybrid reasoning to obtain a fault diagnosis result. The method has the advantages of high diagnosis precision, high diagnosis efficiency and the like.

A microgrid system includes a common bus; a generator electrically connected to the common bus, the generator comprising a prime mover; a generator stator; and a generator rotor coupled to the prime mover. The generator rotor and the prime mover have a combined generator rotational moment of inertia and the prime mover is configured to rotate the generator rotor relative to the generator stator at a system angular velocity to generate electricity. The synchronous condenser includes a synchronous condenser rotor with a synchronous condenser rotational moment of inertia. The synchronous condenser rotor is configured to rotate at the system angular velocity in response to rotation of the generator rotor. The microgrid system has a combined system rotational moment of inertia including the generator rotational moment of inertia and the synchronous condenser rotational moment of inertia, wherein the system rotational moment of inertia resists deviation of the system angular velocity.

The present invention discloses a synchronous phase condenser capacity configuration method based on a genetic optimization algorithm, the steps of which are as follows: establishing a power system transient simulation model and a phase condenser capacity optimization configuration model in BPA and MatLab respectively, initializing parameters such as the number of individuals n, crossover rate c, mutation rate v, maximum number of iterations N, and convergence error ε, randomly generating an initial population, and starting iteration; BPA reads the phase condenser capacity to perform transient simulation and generate simulation data, MatLab reads the simulation data, normalizes the data, and calculates the fitness function of the current population; saving the individual with the smallest fitness function as SCo; performing selection, crossover, and mutation based on the genetic algorithm to produce a new generation of population, judging whether the convergence conditions are met, and if so, exiting the iteration; otherwise, continuing the iteration. This method realizes the automatic iteration and optimization solution of the synchronous phase condenser capacity configuration problem to improve system stability based on the genetic optimization algorithm.

The embodiments of this specification provide a reinforcement learning-based active power control method, system, device, and storage medium for use with an inertial flywheel. The method includes: collecting the power and speed of a synchronous condenser included in the inertial flywheel; inputting the power and speed into a reinforcement learning neural network to obtain a proportional, integral, and differential; determining a power deviation based on the power and a preset target power; determining a torque base value based on the proportional, integral, differential, and power deviation using a PID controller; determining an optimal control signal based on vector control using the torque base value as input; and controlling a current converter controller based on the optimal control signal to achieve control of the inertial flywheel. This method solves the problems of slow system response and large output oscillation, thereby improving the system's dynamic response performance and control accuracy.

The invention relates to the technical field of high-inertia energy storage type synchronous phase modifier control, and particularly discloses a transient voltage control method and device for a high-inertia energy storage type synchronous phase modifier. Control errors generated by first power coupling caused by angle deviation of a synchronous rotating coordinate system of a controller and second power coupling caused by Park inverse transformation modulation signal deviation are calculated and compensated, so that the influence of phase locking deviation on power decoupling control is effectively eliminated; the actual output power of the high-inertia energy storage type synchronous phase modifier can accurately track the control reference value; by considering rotor current constraint and rotating speed constraint, active power and reactive power which enable the voltage drop transverse component of a grid-connected point to be minimum are calculated, and voltage drop during a power grid fault period is effectively inhibited; by judging whether the phase-locking deviation is zero or not and selecting different control strategies according to the phase-locking deviation, the adaptability and reliability of the control system are improved; by accurately calculating the power control reference value, the accuracy of transient voltage control is improved.

The utility model relates to the technical field of power generation regulation, and discloses a wind-solar-thermal bundled power generation regulation system based on distributed phase modifiers, which comprises a power generation end, the power generation end comprises a wind power generation system, a photovoltaic power generation system and a thermal power generation system, and the regulation system further comprises a plurality of distributed phase modifiers and a central controller. The output ends of the wind power generation system, the photovoltaic power generation system and the thermal power generation system are electrically connected with the direct-current power transmission system through an alternating-current bus, the direct-current power transmission system is electrically connected with the receiving-end alternating-current system, and the distributed phase modifier is connected between the wind power generation system and the alternating-current bus and between the photovoltaic power generation system and the alternating-current bus. The central controller drives the distributed phase modifier to change the magnitude and direction of the output reactive power of the wind power generation system / photovoltaic power generation system so as to maintain the stability of the AC bus voltage, so that the stability problem of the new energy base wind-solar-thermal bundled DC delivery system can be effectively solved, and the system has a good application prospect.

The present invention provides a method and device for the excitation transient stability of a distributed synchronous condenser. The method for the excitation transient stability of the distributed synchronous condenser includes: determining whether a system fault occurs according to the active power of the distributed synchronous condenser and the original machine terminal voltage; when a system fault occurs, determining a control quantity of the original machine terminal voltage according to the active power and the rotational speed of the distributed synchronous condenser; and modifying the original machine terminal voltage according to the control quantity. The present invention has an obvious effect of maintaining the rotor stability during both the deceleration and acceleration processes of the synchronous condenser, can effectively prevent the power of the synchronous condenser from entering an oscillating or divergent state, thereby improving the transient stability of the synchronous condenser and being beneficial to the recovery of the transient fault of the new energy power station system.

A rotational stabilizer (100) is described. The rotational stabilizer (100) is electrically connectable to an electrical power grid (200) and includes a synchronous phase modulator (102), a starter / exciter (116), and a power converter (126). A synchronous phase modulator (102) includes a stator assembly (104) having a stator winding electrically connectable to an electrical power grid (200), and a rotor assembly (108) having a rotor winding. The starter / exciter (116) includes a stator assembly (118) having stator windings and a rotor assembly (120) having rotor windings. The rotor assemblies (108, 120) are mechanically connected by a rotor shaft (110). A power converter (122) of the starter / exciter (116) is electrically connected to the synchronous phase modulator (102) and a rotor winding of the starter / exciter (116) and is mounted for rotation on the rotor shaft (110). The power converter (126) has a first terminal (138a, 138b, 138c) electrically connectable to the electrical power grid (200) and a second terminal (140a, 140b, 140c) electrically connected to a stator winding of the starter / exciter (116).

The utility model discloses a phase modifier on-line oil monitoring device with a leakage monitoring function, which belongs to the technical field of oil monitoring and comprises a case and an oil tank, the case is mounted on one side of the oil tank through a quick release mechanism, a mouth-shaped pipeline and a control system are mounted in the case, and the mouth-shaped pipeline is connected with the control system. The other two sides of the mouth-shaped pipeline are each provided with a sensor set used for detecting the logarithm of oil liquid of the phase modifier. The oil taking pipeline, the mouth-shaped pipeline and the oil return pipeline form a detection flow channel, and the detection flow channel is provided with a leakage detection assembly for detecting sudden pressure change; through the cooperation of the leakage detection assembly and the sensor group, in the process of monitoring the oil liquid of the phase modifier, the sensor group is used for monitoring the oil liquid parameters of the phase modifier, meanwhile, the leakage detection assembly can be used for detecting the pressure in the flow channel to accurately identify whether the flow channel leaks or not, and the safety of on-line monitoring of the oil liquid is improved.

The utility model discloses a maintenance platform suitable for a phase modifier cooler, and relates to the technical field of air cooler maintenance, the maintenance platform comprises a platform, a support and a staircase, the platform is provided with a guardrail, the platform is provided with a gap, the other side of the gap is provided with a buckling hole, and the staircase is arranged on the adjacent side of one side of the gap; the supports are fixedly arranged at the two ends of the same side of the platform, the cross beam is arranged between the two supports, and the cross beam is provided with mounting holes; adjusting assemblies are arranged at the bottoms of the supports. The maintenance platform suitable for the phase modifier cooler has the advantages of being fast in installation, good in stability and high in safety coefficient.

The invention provides a synchronous phase modifier rotor winding turn-to-turn short circuit non-intrusive fault diagnosis method based on end magnetic flux leakage, and relates to the technical field of motor fault diagnosis and simulation. On the basis of a phase modifier end magnetic field distribution principle, an end magnetic flux leakage change rule under normal and fault states is analyzed, and even-order harmonics are determined as fault characteristic frequencies; establishing a three-dimensional electromagnetic simulation model, simulating different fault degrees under over-excitation and under-excitation working conditions, and collecting end magnetic flux leakage original data; fundamental waves and second, fourth, sixth and eighth harmonic amplitudes are extracted through spectral analysis, an a% criterion is constructed, and fault judgment and degree evaluation are carried out. According to the method, the criteria are consistent under different excitation working conditions, the method has the advantages of being non-invasive, high in sensitivity and capable of achieving quantitative evaluation, and the operation safety and reliability of the phase modifier are improved.

Prior art photovoltaic (PV) and energy storage systems (ESS) are of little help during a power outage because most PV inverters do not have islanding capability or are unable to provide substantial surge power, requiring overprovisioning of ESS to power high-surge loads, such as an air conditioner. This problem can be solved by drawing inspiration from the Synchronous Condenser, a surge-power source and sink used to stabilize power grid circuits via a flywheel connected to a synchronous motor / generator. A system can comprise a virtual synchronous condenser (VSC) that can source and sink higher power than conventional ESS at a fraction of the price. The VSC herein disclosed is also modular and supports ESS and management of external non-islanding photovoltaic inverters and external photovoltaic DC power sources and handles surge power in systems with ESS so they can be sized for average instead of peak power usage.

The application provides a method and device for judging out-of-step operation of a synchronous condenser, and relates to the field of fault diagnosis. f The application comprises obtaining preset state data of the synchronous condenser, calculating reactive power Q, terminal voltage U and excitation electromotive force E of the synchronous condenser according to the preset state data, calculating the reactive power Q and the terminal voltage U of the excitation electromotive force under a limit state to obtain limit reactive power and limit terminal voltage, comparing the limit reactive power with the reactive power Q and comparing the limit terminal voltage with the terminal voltage U, and confirming the operation state of the synchronous condenser according to the comparison result. The method can judge the out-of-step operation state of the synchronous condenser, is convenient to detect, does not need additional equipment, reduces cost, and is suitable for judging the out-of-step operation of the synchronous condenser.

The present invention discloses an online diagnosis scheme for the inter-turn short circuit fault of the synchronous condenser rotor winding. In view of the characteristics that the excitation of the synchronous condenser is often adjusted, the present invention installs two groups of detection coils at both ends of the rotor, and diagnoses the fault according to the difference in the magnitudes of the currents induced on the coils when the excitation current is adjusted, effectively solving the problem of difficult online diagnosis of the inter-turn short circuit fault of the synchronous condenser rotor winding.

The present application relates to high inertia energy storage type synchronous condenser control technical field, specifically disclose a kind of high inertia energy storage type synchronous condenser adaptive voltage support control method and device.By adjusting the active and reactive power of high inertia energy storage type synchronous condenser to support grid voltage, reactive power is adjusted first, active power is adjusted when necessary, can reduce the deviation of machine terminal voltage as far as possible;Considering the influence of machine terminal voltage and rotor speed variation on the power control ability of condenser, the control ability of high inertia energy storage type synchronous condenser can be fully utilized, and the voltage variation of machine terminal voltage can be reduced;According to the variation degree of high inertia energy storage type synchronous condenser grid-connected point voltage, different strategies are used to flexibly adjust the active and reactive power output of synchronous condenser, which can adapt to various disturbance conditions and effectively support grid voltage;Fixed power control is used to realize the voltage control of high inertia energy storage type synchronous condenser, without communication and complex calculation, and the principle is simple, with high reliability.The present application can realize the adaptive voltage support control of high inertia energy storage type synchronous condenser.

The present application relates to the technical field of power supplies, and discloses a voltage stiffness index-based distributed synchronous condenser configuration method and apparatus, and a computer device, a readable storage medium and a program product. The method is applied to a renewable energy plant comprising a plurality of input branches, and comprises: determining target voltage stiffness of each input branch, wherein voltage stiffness is used for representing a level of voltage support; determining, on the basis of the target voltage stiffness, a target capacity and a target number of distributed synchronous condensers provided in each input branch, and obtaining a plant-level capacity and a plant-level number on the basis of the sum of the target capacities of the input branches and the sum of the target numbers of the input branches; and configuring the distributed synchronous condensers of the renewable energy plant on the basis of the plant-level capacity and the plant-level number, so as to configure the distributed synchronous condensers according to a target level of voltage support. The present application solves the problem that existing distributed synchronous condenser configuration techniques and indexes lack phase angle information, resulting in the inability to accurately evaluate actual support effects of distributed synchronous condensers and the inability to obtain the configuration numbers and capacities of distributed synchronous condensers that better match actual requirements.

This application belongs to the field of new energy technology, specifically disclosing a multi-objective cooperative transient control method for an energy storage-type AC excitation synchronous condenser. It includes: determining the fault stage of the energy storage-type AC excitation synchronous condenser in real time based on real-time operating parameters, and dynamically determining the control objective; considering the controllability constraints of the rotor-side converter output voltage, rotor current safety constraints, and flux linkage stability decay constraints, calculating the port positive-sequence inductance value, negative-sequence inductance value, and transient inductance value corresponding to the control objective at the current stage; and substituting the obtained port positive-sequence inductance value, negative-sequence inductance value, and transient inductance value into the solution to obtain the corresponding current command value. This application fully considers the different transient characteristics at different stages of fault development and sets differentiated optimization objectives to achieve multi-objective cooperative control throughout the fault process; it introduces the port three-sequence inductance as a decision variable, and by dynamically adjusting the inductance value, achieves multi-objective cooperative fault ride-through throughout the entire process of the AC excitation synchronous condenser.