550 results about "Distributed power" patented technology

The invention discloses an island micro-grid operation scheduling method and device. According to the scheme, the method comprises the steps that power generation characteristic modeling is conducted on a distributed power source and an energy storage system of a diesel storage island micro-grid; constructing a function taking the minimum daily total operation cost as a target, wherein the function covers the operation cost of a diesel generator and an energy storage system and the pollutant treatment cost; establishing a power impact type load mathematical model including power characteristics, system dynamic frequency response characteristics, micro-grid dynamic frequency safety constraints and diesel generator frequency control constraints; establishing a micro-grid operation constraint model which has constraints such as power balance, Distflow power flow, energy storage, charging, discharging and capacity, diesel generator output and climbing rate; and solving the model by using a particle swarm optimization algorithm, generating a diesel generator output, energy storage system charging and discharging and frequency modulation reserve capacity distribution strategy, and obtaining an island microgrid optimal operation scheduling decision.

The invention relates to the technical field of micro-grid control, and discloses an AC / DC micro-grid layered distributed control method and system, and the method comprises the steps: obtaining a DC voltage outputted by a distributed power supply in a DC micro-grid and an AC frequency outputted by a distributed power supply in an AC micro-grid, and carrying out the normalization processing; according to the voltage normalization value and the frequency normalization value, a finite time consistency algorithm is adopted to calculate a primary active power reference value of the interconnected converter; compensating the primary active power reference value according to a distributed secondary controller to obtain a secondary active power reference value; and generating a control signal of each interconnected converter according to the secondary active power reference value. Through hierarchical distributed control, the purposes that the total power sent by the direct current micro-grid and the alternating current micro-grid is proportionally distributed according to respective rated capacities and the active power transmitted by all the interconnected converters is proportionally distributed according to the transmission capacities are achieved, and the operation safety and stability of the alternating current and direct current micro-grid are effectively improved.

The invention discloses a power distribution network power supply recovery method and system considering multi-type distributed power supply cooperation, and the method comprises the steps: enabling a fault section to be successfully isolated, and carrying out the non-voltage switching-on of a network-following type DG in an intertripping power-losing region; constructing a source-load balance island based on the network construction type DG, and preferentially recovering an important load; when there is no contact, the upstream switch of the fault point carries out non-voltage reclosing to process an instantaneous fault, and island grid connection is planned; when connection exists, an optimal connection switch is optimized according to the capacity of a connection line and the capacity of a power-losing load, closing is carried out after an unrecoverable section is cut off, and staged power restoration is achieved by circularly cutting off the unrecoverable load, grid connection of the grid-following type DG and updating the recoverable capacity by considering the capacity of the adjacent grid-following type DG. And when an island adjacent section is recovered, the connected switches are subjected to synchronization grid connection. According to the invention, through a multi-type DG cooperative control strategy, the maximum capacity safety recovery of a non-fault section load is realized, the active support capability of the DG is fully exerted, and the reliability of the power distribution system is remarkably improved.

The invention relates to a charging pile AC / DC power dynamic cooperative regulation and control system, which belongs to the technical field of charging piles and comprises a power grid parameter acquisition module, a charging load characteristic analysis module, a coupling effect calculation module, a power distribution optimization module and a cooperative control execution module. The system can accurately distribute power to vehicles which really need and can be efficiently utilized, mutual interference between modules can be effectively restrained, power oscillation and cascading failures are avoided, the stability and reliability of the whole charging station under high-density operation are guaranteed, the robustness of the system is enhanced, and the service life of the charging station is prolonged. A dynamic and globally optimal balance point is found and maintained among three mutually restricted targets, namely, power deviation, coupling power and power grid constraint, by establishing and solving a multi-target optimization model containing power deviation, coupling power and power grid constraint, the stability of the multi-target optimization model is guaranteed, and the power grid safety is maintained, which cannot be achieved by any single-target or static-weight control strategy.

The invention discloses a topology simulation analysis method and system for a low-voltage power distribution area, and belongs to the technical field of power systems and energy, and the method comprises the steps: extracting a multi-scale feature matrix through wavelet transform processing by using real-time electrical data and distributed power output data of the low-voltage power distribution area, and obtaining a feature vector after dimension reduction; combining the dimensionality-reduced feature vector with the topological structure of the low-voltage distribution area, and generating a dynamic topological relation graph through graph convolutional network processing; calculating to obtain a dynamic impedance matrix through adaptive Kalman filtering processing; analyzing and processing through the fault tree, and determining a fault propagation path and a key fault node; and through Markov decision process modeling, a state space, an action space and a reward function are obtained, and an optimized topological structure and an optimized control strategy are generated. The method has the beneficial effect that the accuracy, timeliness and practicability of topology simulation analysis of the low-voltage distribution area are remarkably improved.

A multi-time scale voltage control method for an active distribution network is provided. The method comprises: establishing a voltage optimization approach taking into account a large scale of distributed power supplies to realize cooperative dynamic control in case of a voltage violation generated when the distributed power supplies are incorporated into a distribution network; under a long time scale, establishing a voltage control model for controlling a capacitor bank based on voltage sensitivity analysis to realize drastic voltage regulation in case of the voltage violation by means of reactive power compensation; and under a short time scale, establishing a distributed voltage control model, and considering the problem of voltage violation, solving an optimal control strategy online by fully using active and reactive power outputs of the distributed power supplies to realize quick voltage regulation.

The invention discloses a high-voltage distribution network reactive voltage optimization method, device, equipment and medium based on a time scale, and relates to the technical field of distribution network optimization, and the method comprises the following steps: obtaining the real-time operation state data and prediction information of a high-voltage distribution network, dividing the operation time of the high-voltage distribution network, obtaining the divided data, and calculating the real-time operation state data of the high-voltage distribution network; the division data comprises a long time scale and a short time scale; under a long time scale, based on load prediction and distributed power supply output prediction, a mixed integer programming model is established, and a capacitor bank switching scheme and a transformer tap reference position are obtained; under a short time scale, constructing an optimal power flow model with minimum voltage deviation as a target, and dynamically calling the reactive capacity of the distributed energy converter for real-time correction; and establishing a cross-time-scale coordination control mechanism, triggering advanced re-optimization of a long time scale when the accumulated reactive power regulation quantity under a short time scale reaches a preset reactive power capacity threshold value, and updating an equipment action constraint condition.

The invention discloses an island micro-grid voltage frequency control method and system based on deep reinforcement learning, and the method comprises the steps: S1, building a mathematical model of a distributed power supply grid-connected inverter in an island micro-grid, employing droop control as an inverter control strategy, and building a voltage and current double-closed-loop model based on droop control; s2, designing a secondary voltage controller based on a deep Q network algorithm based on the mathematical model established in S1; s3, designing a secondary frequency controller based on a DQN algorithm based on the mathematical model established in S1 and the secondary voltage controller in S2; and S4, establishing an island micro-grid model containing multi-distributed power supply access, and embedding the voltage controller and the frequency controller trained in the S2 and the S3 into the island micro-grid for online application so as to realize voltage and frequency control of the island micro-grid. The method has the advantages of eliminating voltage and frequency deviation and the like.

The invention relates to the technical field of flexible power transmission of a power system, in particular to a coordinated optimization method and system of a distributed power flow controller and a medium, and the method comprises the steps: building a layered equivalent coupling model of the distributed power flow controller; taking minimization of the total loss of the flexible power transmission system as an optimization target, and performing global optimization on a parallel side output voltage vector and a series side injection voltage vector of the distributed power flow controller by using a layered equivalent coupling model to obtain an optimal coordinated optimization control strategy; obtaining a target control parameter in a target control mode according to the optimal coordination optimization control strategy; and according to the target control parameter and the real-time voltage and current data of the power transmission line, calculating a voltage compensation amount needing to be injected into the flexible power transmission system, and according to the voltage compensation amount, carrying out coordinated optimization control on the power flow of the power transmission line. According to the method, the parallel side and the series side of the distributed power flow controller are coordinated and optimized by establishing the layered equivalent coupling model, so that the voltage stability and power flow equilibrium distribution of the flexible power transmission system are effectively improved.

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

The invention, which belongs to the technical field of fault detection, discloses a fault distance measurement and fault positioning system for a distributed power line, comprising a line signal state analysis module, a line signal adjustment module, a line communication interference determination module and a line fault distance measurement and positioning result output module. According to the method, the accuracy of the input signal is judged by analyzing the characteristics of the abnormal signal, so that the signal is adjusted, the accuracy of the input signal of the ranging and positioning system is improved, the problem that the accuracy of the input signal is neglected in the prior art is effectively solved, the system can accurately and quickly carry out ranging and positioning on a fault, and the working efficiency is improved. Losses caused by wrong positioning faults are reduced, and power supply reliability and stability are improved.

The invention discloses a fault detection method for a low-voltage AC system containing a distributed power supply based on SOGI and wavelet, and the method comprises the steps: carrying out the filtering of a fault signal through a second-order generalized integrator SOGI, generating an orthogonal signal, and calculating the amplitude; performing wavelet packet decomposition on the amplitude signal, and extracting a high-frequency detail component as a fault feature; and dynamically adjusting a detection threshold according to the permeability of the distributed power supply, and judging a short-circuit state based on the high-frequency detail component. According to the method, alternating current side short circuit fault detection under different fault types under different direct current system source load access conditions is realized, and the rapidity of a fault detection algorithm in a high-permeability scene is improved. The method is beneficial to improving the efficiency, reliability and universality of short-circuit fault identification.

The invention relates to the technical field of micro-grids, and discloses a control method of a distributed power supply in a plant micro-grid, and the method comprises the steps: S1, constructing a multi-source collaborative micro-grid system; s2, executing real-time power dynamic allocation; s3, working condition power balance control; s4, active regulation of bidirectional power flow and the like. Based on a real-time AGC instruction and plant load data, a hierarchical coordination mechanism is adopted, charging and discharging power is dynamically adjusted by means of stored energy to track the AGC instruction, and constant power output of wind power is maintained in combination with a wind power prediction model; when a thermal power generating unit is subjected to deep peak regulation, shutdown or fault, the system absorbs excess wind power through energy storage charging, synergistically improves the hydrogen production load power, guarantees dynamic matching of the load and power generation, and actively adjusts energy storage charging and discharging and hydrogen production loads by monitoring the power flow directions of a thermal power generating unit section and a desulfurization section in real time according to voltage fluctuation caused by bidirectional power flow. And the voltage deviation is dynamically compensated, and the system voltage stability is greatly improved.

The invention discloses a distributed power supply access and control method in an intelligent circuit breaker, and particularly relates to the technical field of intelligent circuit breakers. Determining a preliminary synchronization state of the distributed power supply based on the voltage, the frequency and the phase difference; after the synchronization condition is met, collecting the frequency change rate, the voltage amplitude and the phase angle change of each node, and constructing an electrical diagram structure with a dynamic weight; performing weighted aggregation on the node information by using a graph attention network, and outputting a virtual inertia estimated value; inverting node output power based on a synchronous machine model, and estimating a system load disturbance rate in combination with time difference; inputting the inertia and the disturbance rate into a synchronous risk prediction model to generate a synchronous risk score value; when the score value is higher than a threshold, determining that a false synchronization risk exists, and prohibiting grid connection; if the score value is lower than the threshold value, the circuit breaker is controlled to be closed, slope type power injection is executed, smooth grid connection is achieved, the dynamic judgment capacity of the distributed power supply before grid connection is effectively improved, and the grid connection instability risk is reduced.

The embodiment of the present application discloses a power supply system and its control method. The power supply system includes N distributed power sources and at least one detection control unit. The N distributed power sources are connected to the power grid in parallel or in series, and N is an integer greater than 1; the detection control unit is used to obtain the power compensation control ratio of each distributed power source based on the impedance of each distributed power source to the grid connection point of the power supply system when it detects that the oscillation of the power supply system exceeds a preset threshold range. The power compensation control ratio is the ratio of the power output of each distributed power source to the total power output of the power supply system; the detection control unit is also used to control the power output ratio of each distributed power source based on the power compensation control ratio. By adopting the embodiment of the present application, it is possible to suppress the oscillation of the power supply system and ensure the normal and stable operation of the power supply system without changing the original control circuit or adding additional equipment, so the implementation is low in complexity and low in cost.

The invention relates to a distributed power distribution fault processing method and system based on edge computing, and the system comprises a sensing layer which comprises a fault sensing unit and an edge computing node which are disposed at a low-voltage power distribution system terminal, and the fault sensing unit is used for collecting the operation data and environment data of power distribution equipment, the edge computing node processes and analyzes the data; the network layer is used for realizing data transmission between the sensing layer and the platform layer; the platform layer is used for storing, managing, analyzing, processing and applying the data uploaded by the sensing layer; the application layer is an application which is developed and deployed on the platform layer and is related to fault processing; the system has the advantages that through localized data processing and real-time analysis, the response speed and reliability of the power distribution system are remarkably improved; the system can detect and respond to abnormal conditions within millisecond-level time, loss caused by faults is greatly reduced, fault reasons are accurately positioned through a comprehensive scoring model and contribution degree analysis, and the accuracy of fault diagnosis is improved.

The invention discloses a power distribution feeder fault detection method considering transient frequency response of a distributed power supply, which relates to the technical field of power distribution network fault detection and comprises the following steps: acquiring a voltage traveling wave signal and performing wavelet transformation to obtain a multi-scale wavelet coefficient; calculating wavelet energy entropy and extracting local time-frequency energy characteristics; constructing a time-frequency energy matrix and calculating a norm of the time-frequency energy matrix to judge whether detection is started or not; and after a threshold condition is met, normalizing the energy matrix, screening out invalid data, calculating a non-zero norm, obtaining a distribution proportionality coefficient according to the non-zero norm, and finally completing fault identification. The method has better effects in the aspects of accuracy and applicability.

The invention provides an AC / DC converter for microgrid distributed power supply access and a hybrid optimization control method. The method comprises the following steps: presetting the maximum switching frequency fsmax of a DAB converter; when the real-time switching frequency fs of the DAB converter is smaller than the preset maximum switching frequency fsmax, modulating the DAB converter by using the frequency conversion SPS; when the switching frequency fs reaches a preset maximum switching frequency fsmax, modulating the DAB converter by using a fixed-frequency EPS, and enabling fs to be equal to fsmax; when the fixed-frequency EPS is used for modulation, if Iacsin (omega t) is smaller than or equal to nVdc (K1) / (8fsLkK2), the DAB converter is in an internal mode; otherwise, enabling the DAB converter to be in an external mode. According to the method disclosed by the invention, all the switching tubes can realize zero-voltage switching in a full-load range, and the converter can keep high PF and low THD values.

The invention provides an overhead line power supply reliability assessment method and device considering a distributed power supply. The method comprises the following steps: acquiring an assessment parameter set of a first line; calculating the evaluation parameter set according to a preset evaluation method to obtain the number of households during first power failure and the number of households during second power failure; obtaining the total number of lines and the total number of users corresponding to the medium-voltage overhead line set; determining a third number of households during power failure according to the total number of lines, the first number of households during power failure and the second number of households during power failure; the third number of households during power failure represents the number of households during power failure of all medium-voltage overhead lines; determining the average power failure time of the users according to the number of households in the third power failure and the total number of the users; and determining the target power supply reliability corresponding to the medium-voltage overhead line set according to the user average power failure time. Various evaluation parameters can be comprehensively considered, so that the accuracy of power supply reliability evaluation of the medium-voltage overhead line is improved.

The invention discloses a distributed power supply cooperative control method based on transient dynamic characteristic adaptive driving, which adopts a multi-dimensional transient performance coupling evaluation function, unifies multiple targets including frequency, voltage, power angle and operation economy into a global optimization target, and fundamentally solves the defect of single target in the prior art. A collaborative strategy network based on dynamic context awareness is adopted, and a time sequence processing technology based on an attention mechanism is utilized, so that an intelligent agent can extract key transient dynamic characteristics from a local observation sequence, and the limitation of no memory and non-self-adaption in the prior art is broken through; according to the method, a cooperative control flow of a cooperative control strategy is provided, a high-performance learning type strategy is combined with a high-reliability safety monitor, the problem that safety and performance are difficult to be compatible is solved, fundamental transformation of distributed power supply control from passive, local and static rule-based modes is achieved, and the transient stability margin of a novel power system is remarkably improved.

The invention discloses an urban rail hybrid energy storage system power distribution method based on LPF-MPC, and the method comprises the steps: employing a hybrid energy storage system (HESS) composed of a super capacitor and a battery for the frequent starting and braking of an urban rail train to generate a large amount of braking energy; on the basis that a low-pass filter (LPF) distributes power required by HESS, the rolling prediction and optimization control capability of model prediction control (MPC) is utilized to control the minimum value of the state of charge (SOC) of a super-capacitor to be close to a preset expected value, so that power distribution is optimized, and loads are reasonably distributed to the super-capacitor and a battery; according to the method, the working interval of the super-capacitor SOC is dynamically adjusted, the capacity advantage of the super-capacitor is fully played, the charging and discharging times of the battery are reduced, the energy management efficiency of the urban rail hybrid energy storage system is effectively improved, the system stability is enhanced, and the service life of the battery is prolonged.

The invention discloses a distributed electric power measurement real-time detection and fault early warning system, and relates to the technical field of data analysis, and the system comprises the steps: obtaining the electrical correction parameters of distributed power supply equipment, building a multi-scale feature fusion network, screening the transient abnormal events of the distributed power supply equipment, and carrying out the fault early warning. Establishing a transient abnormal event parameter matrix of the distributed power supply equipment; performing space-time joint positioning according to the transient abnormal event parameters, establishing an abnormal fault identification model, and determining abnormal fault features of the distributed power supply equipment; according to the abnormal fault features of the distributed power supply equipment, establishing a dynamic risk assessment model, and quantifying the fault risk score of the distributed power supply equipment; and the judgment module is used for judging whether the fault risk score of the distributed power supply equipment is in a safety threshold, if yes, judging that no abnormity exists, and if not, judging that abnormity exists. The method has the beneficial effects that the fault risk is effectively reduced, and the power supply reliability is improved.

The utility model provides a distributed power supply access unit detection bench and a detection device. The detection bench comprises: a detection support member; the crimping support member is arranged on the front surface of the detection support member and is installed on the detection support member. The telescopic driving piece is arranged on the back face of the detection supporting piece, the fixed end is arranged on the detection supporting piece, and the telescopic end is provided with a crimping push plate which is arranged in the crimping receding hole in a penetrating mode and can be adjusted in position in the length direction of the crimping receding hole; the pin fixing member is arranged on the front surface of the detection support member and is installed on the crimping push plate. The pin fixing member is provided with a detection probe. According to the utility model, the detection flow operation is simple, safe and reliable, the labor intensity of workers is effectively reduced, and the problem that the operation is tedious and complex when the existing distributed power supply access unit is manually installed on the detection bench is solved. Meanwhile, the structure is simple, control is convenient, high efficiency is achieved, multiple detection functions are achieved, and the detection efficiency and the detection accuracy can be effectively improved.

The invention relates to a power distribution network line voltage regulating device locating and sizing method and device based on voltage space-time distribution characteristics. The method comprises the following steps: screening out the lowest voltage value and the highest voltage value in a line all the year round, and respectively extracting power distribution outlet voltages under corresponding time sections; voltage distribution models from a power distribution outlet to a user corresponding to the annual minimum voltage value and a user corresponding to the annual maximum voltage value are constructed respectively, and then the installation distances under the corresponding working conditions are calculated according to the critical voltage values of the voltage regulating device under the different working conditions; determining a target installation position according to the first installation distance and / or the second installation distance based on the power distribution network line out-of-limit condition; and searching a tower near the target installation position along the power distribution network line as an installation tower of the voltage regulating device, and determining the capacity of the voltage regulating device according to the load of the line at the rear end of the installation tower. According to the invention, the problem of voltage out-of-limit caused by factors such as power supply radius increase and distributed power supply access of a medium-voltage or low-voltage line can be effectively solved.

The invention relates to the technical field of distributed power supply operation control of a power distribution network, and discloses a node voltage distribution control optimization method, a node voltage distribution control optimization system, node voltage distribution control optimization equipment, a node voltage distribution control optimization medium and a node voltage distribution control optimization product of a power distribution area. And taking the voltage distribution of each node in the whole domain as an initial voltage distribution condition of load flow calculation, and performing load flow calculation on the power distribution area under the condition of meeting safety constraints and a load flow equation to obtain optimal active power output and optimal reactive power output under the condition that the deviation between the voltage of each node in the whole domain of the power distribution area and a preset rated voltage is minimized. The power scheduling instruction is generated through the optimal active power output and the optimal reactive power output, and the local controller of each distributed power supply executes the power scheduling instruction, thereby achieving the global optimization of the voltage of the power distribution network through the cooperative adjustment of each distributed power supply, and effectively improving the quality and reliability of electric energy.

The invention provides a consistent and stable operation control method for a net-forming type flywheel energy storage array, and relates to the technical field of flywheel energy storage. Comprising a distributed power distribution strategy based on a ratio consistency algorithm and a flywheel energy storage array control strategy based on'voltage-rotating speed-current 'three closed loops. For rotating speed control, the problems of energy-saving voltage stabilization, SOC management, flywheel unit rotating speed balance and the like do not need to be considered, only the rotating speed loop needs to be connected between the voltage loop and the current loop in series, and the structure is simpler. In terms of power distribution, the strategy does not depend on a central controller or a leader unit, each flywheel unit only needs to exchange information with the adjacent unit to complete power distribution, the reliability of the flywheel energy storage array is improved, and the robustness is good.

The invention provides a master station and voltage-time cooperative self-healing method, device and equipment, and belongs to the technical field of power distribution automation of a power system. The method is applied to a power distribution network containing a distributed power supply, and comprises the following steps: when a fault signal of a feeder line and an opening signal of an outgoing circuit breaker are received, detecting whether a splitting signal of a grid-connected switch of the distributed power supply is received within a certain time, and if not, remotely controlling the splitting of the distributed power supply by a power distribution master station; and after delay time is determined according to the fault type of the feeder line and delay waiting is carried out, whether a closing and blocking signal is received is detected, and if yes, the power distribution main station starts self-healing to carry out fault positioning and recover power supply of a non-fault area at the downstream of a fault point. The method can improve the fault processing reliability of the power distribution network, and improves the safety and power supply reliability of the power distribution network.

The invention discloses a tunnel reluctance current sensor self-correction measurement method, system and device based on voltage feedback and a medium, and belongs to the technical field of current measurement and sensor anti-interference, and the method comprises the steps: extracting fundamental wave complex components at the fundamental wave frequency of a power supply voltage and an initial output voltage; calculating a filter coefficient according to the fundamental wave complex component and performing phase correction on the output voltage to obtain a corrected output voltage sequence aligned with the phase of the power supply voltage signal; calculating a voltage ratio signal according to the corrected output voltage and the power supply voltage and determining a ratio signal residual error; final current estimation is obtained according to the voltage ratio signal and the ratio signal residual error in combination with the ratio signal; according to the invention, a double-closed-loop compensation structure is adopted, so that channel mismatching and non-linear interference are effectively suppressed; the digital implementation mode enables the system to have good reconfigurability and environmental adaptability, and the system is suitable for application scenes such as intelligent power grids, distributed power monitoring and industrial online detection.

The invention discloses a single-phase earth fault line selection method based on double-layer parameter adaptive optimization, and the method comprises the following steps: collecting three-phase current corresponding to each feeder line of a target system after the single-phase earth fault of the target system occurs, and carrying out the calculation to obtain zero-sequence transient current; inputting the zero-sequence transient current into a self-adaptive optimization decomposition model for self-adaptive decomposition to obtain an intrinsic mode component of a corresponding feeder line; extracting transient characteristics based on the intrinsic mode component and constructing a transient characteristic matrix; and inputting the transient characteristic matrix into a pre-trained optimization mechanism fault line selection model, outputting a fault posterior probability corresponding to each feeder line, and determining a fault feeder line according to the fault probability. According to the invention, double-layer parameter adaptive optimization is used for carrying out joint optimization on key parameters of a decomposition model and key parameters of a line selection model, so that effective feature extraction and reliable discrimination can still be realized under the conditions of complex zero-sequence transient current high-frequency components and unclear features caused by the access of the distributed power supply; therefore, misjudgment and missed judgment are reduced, and the fault line selection accuracy and robustness are improved.

The invention discloses a hybrid distributed power flow controller topological structure and a control method thereof. The topological structure comprises a distribution network Sen transformer DST and a distributed static synchronous series compensator DSSC. The distribution network Sen transformer DST comprises a three-phase double-winding transformer and an on-load tap changer group; each phase of the three-phase double-winding transformer comprises a main winding and a secondary winding, the high-voltage end of the three-phase main winding is connected with the head end of the three-phase distribution line, the low-voltage end of the three-phase main winding is in star connection, and the neutral point of the three-phase main winding is grounded; the on-load voltage regulation switch group comprises six on-load voltage regulation switches which are respectively configured on the low-voltage side of the three-phase main winding and the three-phase secondary winding and provide three-phase first compensation voltage in a cross series connection mode; a distributed static synchronous series compensator DSSC provides a three-phase second compensation voltage; and the three-phase first compensation voltage and the three-phase second compensation voltage are superposed to synthesize a three-phase compensation voltage, and the three-phase compensation voltage is injected into a three-phase distribution line through a three-phase isolation transformer. The invention provides a series hybrid topology consisting of a DST (Digital Subscriber Terminal) and a DSSC (Digital Subscriber Subscriber Center).