55 results about "Synchronous condenser" patented technology

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 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 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.

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 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 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.

The invention provides a quantitative evaluation method and device for transient power angle stability of a synchronous phase modifier, relates to the technical field of power systems, and solves the problem that a distributed phase modifier close to new energy has a transient power angle instability risk after a system breaks down, and adopts the scheme that track information of all synchronous machines in the system after the fault is removed is extracted; judging the transient power angle stability of the power system; after it is determined that the transient power angle of the power system is stable, kinetic energy and potential energy of the synchronous phase modifier after the fault are calculated according to a single-machine energy function; judging whether the potential energy of the synchronous phase modifier is a standard track or not, and if the phase modifier has the standard track, defining the moment when the potential energy of the phase modifier reaches the minimum value or the maximum value for the first time; and calculating stable indexes and unstable indexes under different trajectories. According to the scheme, the transient stability condition of the new energy station synchronous phase modifier can be quantitatively evaluated, and example verification can be carried out in a new energy delivery simplified system only comprising one distributed synchronous phase modifier.

The application discloses an inertia support control method and system of a high-inertia energy storage type synchronous condenser, comprising: when the grid voltage is greater than or equal to a preset voltage threshold, determining a grid frequency deviation based on the grid frequency, and judging whether the frequency deviation exceeds a dead zone range, and obtaining a judgment result; when the judgment result indicates that the frequency deviation exceeds the dead zone range, the system frequency is disturbed, the inertia support and primary frequency modulation function are put into operation, an active current instruction value is generated according to the frequency deviation, and the grid frequency is controlled based on the active current instruction value; the rotor speed is obtained in real time, when the rotor speed reaches a rotor speed limit value, the active output instruction is set to zero and the dead zone range is adjusted, until the rotor speed returns to a preset range, the dead zone range is restored to normal, and the active output instruction is unlocked.

This invention relates to the field of motor dynamic performance technology, specifically disclosing a method for optimizing excitation control parameters based on a high-voltage direct-connected synchronous condenser, comprising: Step S1, defining the excitation control parameters of the high-voltage direct-connected synchronous condenser excitation system; the excitation control parameters include: the gain of the thyristor, the time constant of the integral element of the excitation regulator, the time constant of the differential element of the excitation system, and the coefficient of the thyristor regulation element; Step S2, performing sensitivity analysis based on simulation examples to obtain the influence law of each excitation control parameter on the overvoltage value; Step S3, based on the influence law, constructing a nonlinear coupled mapping model with the excitation control parameters as input and the overvoltage value as output using a neural network; Step S4, using the LMSSA sparrow search algorithm with a leader mechanism, with the minimum overvoltage value output by the mapping model as the optimization objective function, searching and optimizing the combination of excitation control parameters, and outputting the optimized combination of excitation control parameters.

The invention discloses a static frequency converter control method and a static frequency converter control system for a distributed phase modifier unit. The static frequency converter control method of the distributed phase modifier group comprises the following steps: determining a target phase modifier group and calling a corresponding sequence control constant value according to a starting instruction; according to the sequential control constant value, power loop switches are closed in sequence to establish an excitation power supply path; after an excitation power supply path is established, rotor initial position detection is executed, a correct initial triggering sequence is determined, pulse output is unlocked, and power output is started; dragging the target phase modifier group to start in a forced commutation mode; monitoring the terminal voltage frequency of the target phase modifier unit in real time; and when the terminal voltage frequency is higher than a preset commutation switching threshold, switching the commutation mode from a forced commutation mode to a load commutation mode, and continuing to drag the target phase modifier unit to accelerate to the target rotating speed.

The invention relates to the technical field of power system protection and control, in particular to a temperature rise monitoring method and device for a converter of a high-inertia energy storage type synchronous phase modifier, and aims at the converter of the high-inertia energy storage type synchronous phase modifier adopting an integrated gate commutated thyristor. The method comprises the following steps: establishing a converter thermal network model by considering the mutual influence of motor electrical quantity, converter loss, thermal impedance and device junction temperature, calculating the device junction temperature of the converter in real time according to the terminal voltage and the rotating speed of the high-inertia energy storage type synchronous phase modifier, and monitoring the temperature rise of the converter by monitoring the highest junction temperature of the device in real time; according to the method, the junction temperature change of the converter device of the high-inertia energy storage type synchronous phase modifier under different working conditions can be monitored in real time, the mutual influence of the electric quantity of the motor, the thermal network parameters of the converter and the junction temperature is considered, and the junction temperature calculation precision of the converter device is improved.

This invention provides a planning method, apparatus, equipment, and medium for energy storage-type synchronous condensers, relating to the field of power system technology. It involves acquiring basic data and safety operation constraints of the power system in a target area; determining the planning boundary conditions of the power system based on the basic data and safety operation constraints; determining the probability of each scenario and the corresponding power data for each scenario probability based on historical output fluctuation data and historical load change data of new energy sources in the target area power system; and using a two-level planning model based on the planning boundary conditions, the probabilities of each scenario, and the corresponding power data, predicting the target access node and target capacity of the planned energy storage-type synchronous condensers, thereby reducing the frequency fluctuation risk and cost of the power system in areas rich in new energy sources.

The invention discloses a phase modifier state evaluation method and system based on improved dynamic index weight. The method comprises the following steps: constructing a phase modifier operation state evaluation index system; the index system comprises a steady-state quantity evaluation index and a dynamic quantity evaluation index; calculating the fixed weight of each index based on an analytic hierarchy process; calculating the dynamic weight of each index based on a partial derivative variable coefficient method; calculating a comprehensive weight vector of each index in combination with the fixed weight and the dynamic weight; performing normalization calculation on each index based on the standard limit value of the running state of the phase modifier to obtain a normalized value; calculating the membership degree of each index based on the normalized value of each index in combination with the actual working condition; and based on the comprehensive weight vector and the membership degree, calculating an evaluation result of the running state of the phase modifier by using a fuzzy comprehensive evaluation method. The method has the advantages of high evaluation precision and the like.

The invention discloses a synchronous phase modifier and STATCOM multi-target coordination optimization control method in an HVDC system. The method comprises the following steps: establishing a synchronous phase modifier reactive power regulation system based on SNA-PID; the deviation of the alternating current bus voltage of the inverter station is used as an input quantity, and the ITAE, the maximum absolute error value and the minimum steady-state deviation absolute value of the alternating current bus voltage of the inverter station are used as optimization targets of multi-target coordinated optimization control; and an NSGA-II multi-target optimization algorithm is adopted to carry out multi-target coordinated optimization on synchronous phase modifier reactive power regulation optimization parameters based on SNA-PID and voltage and current PI regulator control parameters of the STATCOM, so that multi-target coordinated optimization control of the synchronous phase modifier and the STATCOM in the HVDC system is realized. According to the invention, the inverter station AC bus voltage drop caused by system faults and load access can be effectively reduced, the inverter station AC bus overvoltage caused by fault elimination and load disconnection can be effectively suppressed, the recovery time of the system bus voltage is reduced, the probability of commutation failure of the system is effectively reduced, and the reliability of the system is improved. And the system stability is improved.

The embodiment of the invention discloses a method and device for suppressing commutation failure of high-voltage direct-current transmission, and relates to the technical field of stable control of a power system, and the method comprises the steps: starting additional excitation control when a preset commutation failure risk condition is monitored to be satisfied; acquiring real-time alternating voltage and real-time direct current of a phase-change bus of the high-voltage direct-current power transmission system; calculating a commutation failure severity index based on the change rates of the real-time alternating voltage and the real-time direct current; inputting the commutation failure severity index into a feedforward controller to generate an additional excitation control signal; and adjusting an excitation control system of the synchronous phase modifier according to the additional excitation control signal. By introducing a severity index based on the change rate, the dynamic trend of the fault can be captured, and more timely control response is realized; through rapid and active reactive power support, AC bus voltage drop is effectively suppressed, and the operation stability of an AC-DC hybrid power grid is improved.

This invention provides a method and system for equalizing multiple branches of a grid-type magnetic valve-type static synchronous condenser with overcapacity, relating to the field of reactive power compensation technology in power systems. The invention first defines adjacent branches of each branch of the synchronous condenser according to their electrical cascading sequence, and reads reference signals within the current rolling window. For each branch, the adjustment deviation between that branch and its adjacent branches is calculated at each sampling point, and cumulative deviation verification and marking of branches to be adjusted are completed within the current rolling window. At the start of the next monitoring cycle, the branch to be adjusted performs virtual impedance step adjustment at a fixed ratio until the current deviation meets the requirements. It then determines whether the number of times the reference data for this adjustment has been repeated in previous adjustment cycles exceeds the sample size trigger threshold. If it does, the fixed ratio is optimized and replaced. This method, with its decentralized architecture, offers higher reliability and allows for the development of fixed ratio optimization measures during continuous operation, improving convergence and iteration speed.

The invention provides a stator cooling device of a synchronous phase modifier, which belongs to the technical field of cooling devices and comprises a cooling liquid suction pump, an input port of the cooling liquid suction pump is communicated with a cooling liquid storage tank, and an output port of the cooling liquid suction pump is sequentially communicated with a cooling liquid conveying pipe, a first connecting pipe and a second connecting pipe; the cooling device further comprises a positioning mounting rod and a positioning connecting rotary disc, the positioning connecting rotary disc is rotationally mounted on the positioning mounting rod, and the two ends of the positioning mounting rod are fixedly mounted on the outer surfaces of the same sides of the cooling liquid conveying pipe and the first connecting pipe correspondingly. At least one pipeline connecting cylinder is connected to the positioning connecting turntable, and a filtering mechanism is arranged in the pipeline connecting cylinder; the filtering mechanism is arranged in the pipeline connecting cylinders, and the multiple pipeline connecting cylinders are sequentially installed between the first connecting pipe and the cooling liquid conveying pipe, so that the filtering mechanism is rapidly replaced, and the downtime is shortened.

The utility model relates to a stator permanent magnet adjustable magnetic flux motor with an adjustable magnetic flux ring capable of axially translating, which comprises a salient pole rotor, a stator and an adjustable magnetic flux ring, and is characterized in that the stator comprises an armature winding, a stator iron core and permanent magnet steel, and the salient pole rotor, the stator and the adjustable magnetic flux ring are coaxially arranged; the magnetism adjusting ring is made of a magnetic conductive material and is positioned on the outer side of the stator iron core; the axial position between the salient pole rotor and the stator is relatively unchanged, and the axial position between the magnetic field adjusting ring and the salient pole rotor can be adjusted at will. By arranging the adjusting translation device, the axial relative position of the magnet adjusting ring and the salient pole rotor can be adjusted according to different application scene requirements of the motor, so that the no-load magnetic field and the no-load back electromotive force of the motor are adjusted, and the permanent magnet synchronous motor has the advantages of simplicity in magnet adjustment, low idle loss, simple structure, high reliability and the like; the method is especially suitable for power system energy storage motors and synchronous phase modulation motors.

This invention relates to the field of motor dynamic performance technology, specifically disclosing a method for jointly optimizing the excitation control structure and parameters of a high-voltage direct-connected synchronous condenser. The method includes: Step S1, establishing an excitation control system for the high-voltage direct-connected synchronous condenser; Step S2, optimizing the fixed parameter module by using the controlled variable method to determine the thyristor amplification factor that improves the system's voltage support performance, i.e., the optimal fixed parameters; Step S3, constructing a mapping model of an artificial neural network for searching and optimizing the dynamic parameter module; Step S4, using an improved artificial fish swarm algorithm to search and optimize the parameter combination of the dynamic parameter module, with minimizing the overvoltage prediction value as the optimization objective, to obtain the optimal dynamic parameter combination; Step S5, applying the optimal fixed parameters and the optimal dynamic parameter combination as the optimized excitation control parameters to the excitation control of the high-voltage direct-connected synchronous condenser. This invention can improve the dynamic response characteristics and voltage support effect of the high-voltage direct-connected synchronous condenser.

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.

This invention relates to the field of synchronous condenser technology, and more particularly to a synchronous condenser system and its control method. A synchronous condenser system includes a control module, a synchronous condenser, a motor, a shaft, a flywheel, and a brake. A control method for the synchronous condenser system enables the system to start and connect to the external power grid, absorb or output active and reactive power based on external signals, and shut down the system. The synchronous condenser and motor of this invention adopt a coaxial dual-rotor structure, making the overall system structure more compact. The control module controls the synchronous condenser system to absorb or output active and reactive power based on the primary frequency regulation parameters and reactive power demand information of the external power grid, participating in primary frequency regulation and power grid reactive power regulation. The control module also helps to smooth high-frequency power fluctuations in wind or photovoltaic power generation by adjusting the duration and period of active and reactive power absorption or output.

This application discloses a collaborative control method for an excitation system compatible with both generator and synchronous condenser operating conditions. By decoupling and reconstructing electromechanical sensor data and performing pattern recognition, it captures the time-varying inertial parameters of the unit during operating condition transitions in real time. Based on this, a state-space observation mechanism based on flux linkage continuity prediction is constructed, directly transforming the evolution of the system's inertial boundary into feedforward compensation voltage. This collaborative control strategy, by introducing dynamic time-varying inertia as a compensation benchmark, can overcome the adjustment dead zone of traditional proportional-integral converters, directionally eliminating flux linkage deviations within milliseconds and effectively suppressing transient reactive power drops. The resulting smooth switching not only significantly improves the control robustness of the excitation system under extreme transient conditions but also fundamentally avoids actuator saturation risks and shaft derailment shutdown hazards, greatly enhancing the voltage disturbance rejection capability of synchronous units in new power systems.

The invention relates to the technical field of phase modifiers, in particular to a phase modifier reactive transient stability quantitative analysis system based on time constants. Comprising a data acquisition device, a data enhancement device, a simulation test device, a model parameter correction device and a time constant calculation device. The data acquisition device is used for acquiring a power angle deviation curve and a rotor speed deviation curve corresponding to the phase modifier group under different disturbance information to generate an actual sample set; according to the scheme, sparse actual measurement disturbance data (a power angle / rotating speed deviation curve) is intelligently amplified through the adversarial network model, an expansion sample set covering multiple working conditions is generated, and on the basis of closed-loop optimization of the driving simulation model, the identification precision of the damping coefficient (D) is remarkably improved, so that the reliability of time constant calculation is ensured, and the accuracy of time constant calculation is improved. Finally, a high-precision and low-data-dependence authoritative analysis report is provided for quantitative evaluation of the reactive transient stability of the phase modifier.