66results about How to "Frequency stability" patented technology

The invention discloses a wind power plant station AGC parameter optimization method based on a GWO-LSTM neural network. The method comprises the steps that a regional power grid frequency model containing a wind power plant station is established; constructing an LSTM neural network model, obtaining power grid system state data according to the regional power grid frequency model, and initializing the LSTM neural network model; performing optimization adjustment on hyper-parameters of the LSTM neural network model by using a GWO algorithm to obtain a GWO-LSTM neural network model, and performing offline training on the GWO-LSTM neural network model; a state vector and a control vector of a power system are obtained, prediction time domain parameters of model prediction control are calculated by adopting a GWO-LSTM neural network model, and optimal parameter combinations under different working conditions are obtained, so that the parameters of model prediction control are adaptively adjusted so as to output an optimal frequency control instruction, and the frequency stability of a wind power plant station under different disturbances is ensured.

The invention discloses a PMSG and energy storage coordinated adaptive virtual inertia control method based on a frequency change rate. At present, a cooperative control strategy of a wind power generation system and energy storage equipment is not mature, and how to reasonably distribute control rights, optimize control parameters and optimize the overall performance of the system is an urgent problem to be solved in current research. In order to solve the problem, the invention provides a self-adaptive control method which can effectively reduce the fluctuation of the system frequency and improve the stability of the system. In addition, the method is also combined with the control of the energy storage battery, so that the quick response to the system frequency and the conversion from the state change of the energy storage system to the active power reference value of the virtual synchronous machine are realized. The invention aims to provide the PMSG and energy storage coordinated adaptive virtual inertia control method based on the frequency change rate, the effect of an energy storage link can be fully played, the virtual inertia is coordinated to adaptively adjust the system frequency, the power fluctuation is inhibited, and the stability of the system is improved.

The invention provides a wind, light, fire and nuclear storage integrated scheduling architecture based on a complex and uncertain environment of a cold region power grid, and relates to the technical field of power grid system processing, the architecture comprises a data acquisition and monitoring layer, an analysis and decision layer, a control execution layer and an evaluation and optimization layer, the anti-freezing and deicing technology of the power transmission line effectively improves the reliability of equipment in severe environments such as low temperature and ice and snow, guarantees the stability of power transmission of a power grid, reduces equipment faults and power failure accidents caused by cold environment factors, enhances the anti-risk capability of the whole power grid, and improves the safety of the whole power grid. According to the method, characteristics and complementary relations of multiple energy sources of wind, light, fire and nuclear storage are comprehensively considered, peak regulation and frequency modulation analysis and decision making and integrated regulation and control analysis and decision making are carried out, and by constructing a reasonable operation scene and a scheduling model, optimal configuration and cooperative operation of power generation resources can be achieved under different operation conditions.

A kind of power device parallel type power module and capacitor charging and discharging method, power module includes two or more than pressure type power device, the two or more than pressure type power device adopts the physical form of half bridge group string upper and lower parallel;The half bridge group string of the pressure type power device is connected in parallel by silicon pile composite busbar;Each power module is provided with pneumatic short-circuit switch, in the case of multiple power module series connection, the pneumatic short-circuit switch is connected in series with all DC capacitors, and charging and discharging is carried out through the ground loop of flexible AC transmission equipment AC, DC valve side;The pneumatic short-circuit switch is connected with gas driving pipeline, and the gas driving pipeline is connected with valve-based gas pressurizing device.The power module can effectively improve the capacity of flexible AC transmission equipment, so that it has short-time frequency modulation capacity output, provides technical scheme support for new power system construction, and guarantees system safety and stability;The provided capacitor charging and discharging method can improve maintenance efficiency and enhance product reliability.

The invention discloses a rapid power control method and system for an off-grid micro-grid containing a grid-forming distributed power supply. The method comprises the following steps: based on a microgrid information physical fusion model, sensing and identifying parameters and operation states of each part of the microgrid through a finite state machine; carrying out detailed modeling and description on each state of the system, and clearly displaying state conversion information and conditions of the micro-grid system; primary control based on a network construction type converter is introduced to control the power of the system, active and reactive power output is adjusted, and when the system senses and identifies corresponding parameter changes, each stage of control is triggered to act; secondary control is introduced to carry out rapid power control adjustment on the micro-grid, frequency and voltage excursion caused by primary control is made up, external disturbance is suppressed, and the power of each part of equipment is reasonably distributed; model predictive control based on data driving is introduced, accurate power distribution and global optimal control are achieved, and the system operates stably.

The invention discloses a power supply system containing a hybrid energy storage and diesel generator two-stage emergency power supply, which relates to the technical field of power supply systems and comprises an alternating current bus, a system power supply, an energy storage device, a diesel generator, an important load and an unimportant load. The system power supply comprises a frequently-used power supply and a standby power supply which are respectively connected to the AC bus through switches; the energy storage device consists of a hybrid energy storage system, a three-phase inverter, a filtering unit and an energy storage switch, and is connected to the alternating current bus; the diesel generator is connected to the bus through the grid-connected switch; the loads are divided into important loads and unimportant loads, and the system has four switchable states of common power supply-energy storage parallel connection, standby power supply-energy storage parallel connection, energy storage power supply and diesel generator-energy storage parallel connection so as to ensure stable power supply.

The invention relates to an energy storage networking control method and device, equipment and a storage medium, and the method comprises the following steps: carrying out the real-time data collection of a target power grid through an intelligent sensor, and obtaining the collection data of the power grid; predicting the power grid acquisition data through a preset big data analysis technology to obtain a power grid operation trend; performing energy state evaluation on the target energy storage system to obtain the available capacity of the target energy storage system; formulating a scheduling control plan based on the available capacity and the power grid operation trend; wherein the scheduling control plan is used for scheduling and controlling the target power grid or the target energy storage system so as to keep the frequency of the target power grid stable, and the technical problems of how to effectively integrate the energy storage system into an existing power network and how to ensure that the energy storage system can stably support the frequency of the power grid and other key performance indexes are solved.

The invention discloses a device and a method for laser crystal growth based on a seed crystal reentry method. The device comprises a furnace body and a control system, the lifting mechanism is arranged in the furnace body and is fixedly connected with the top of the furnace body; the lifting mechanism is connected with a seed crystal support, a rotating mechanism is arranged on the seed crystal support, and a torque detection device is arranged on the rotating mechanism; the seed crystal support is used for loading seed crystals; a crucible is arranged under the seed crystal, a plurality of heating units are arranged around the crucible, a rotating magnetic field generator is also arranged around the crucible, and a cooling system is arranged around the rotating magnetic field generator. According to the device and method for laser crystal growth based on the seed crystal reentry method, the eddy current phenomenon in the laser crystal growth process is effectively restrained by accurately controlling the intensity and frequency of the rotating magnetic field and optimizing magnetic field distribution.

The invention provides a network construction type energy storage planning method and system considering inertia response and primary frequency modulation, and the method comprises the steps: screening a typical new energy output scene based on a Monte Carlo method and a scene reduction method, and building an energy storage planning configuration model of a new energy base in the typical scene; the method comprises the following steps: excavating the power self-adaptive adjustment capability of network construction type energy storage, setting the power self-adaptive adjustment range of the network construction type energy storage, and constructing a mathematical model representing the power adjustment and inertia compensation characteristics of the network construction type energy storage; the method comprises the following steps: introducing frequency safety into an energy storage planning configuration model as a target function to form a double-layer model, carrying out iterative solution on the double-layer model by adopting a genetic algorithm, and deciding a network construction type energy storage optimal configuration scheme under joint linkage of economical efficiency and safety targets. The frequency of the new energy base can be safe and stable.

The invention provides a self-injection locking multi-linewidth laser based on Gaussian phase modulation and Brillouin scattering and a multi-linewidth laser generation method thereof. A working light source DFB laser is connected with a first port of a circulator, and a second port of the circulator is connected with an optical fiber resonant cavity through a coupler I; the optical fiber resonant cavity is connected with the output end B through a third port of the coupler II and a third port of the coupler III; a No.2 port of the coupler III is connected with an output end C through a phase modulator; a first port of the coupler III is connected with an attenuator through a Gaussian phase modulator, and the attenuator is connected with a working light source DFB laser through a fourth port and a first port of a circulator. Brillouin scattering in the optical fiber resonant cavity is connected with a second port of the circulator through the coupler I, and a third port of the circulator is connected with the output end A; the invention is used for solving the problem that a dual-frequency and multi-line-width laser can simultaneously meet light sources of different types of RMOGs, can effectively improve the versatility of the laser, and reduces the research and development cost of the optical gyroscope.

The invention discloses a distributed elastic secondary control system for an island AC micro-grid, and relates to the technical field of power system control, and the system comprises the following components: an extended state observer module, an FDI attack model research module, an attack signal estimation and compensation module and an elastic distributed secondary control module. By introducing the extended state observer and the attack signal estimation and compensation module, the influence of the FDI attack on the frequency and voltage of the system can be accurately estimated and compensated, so that when the system suffers from the FDI attack, the control strategy can be quickly adjusted, the frequency and voltage can be stabilized, and the system can be prevented from collapsing or losing stability; and through an improved distributed secondary control strategy, optimal active power sharing is realized, and the stability and safety of the system are further improved.

The application provides a multifunctional static synchronous compensator system, comprising: a plurality of three-phase converter valves, input ends of each three-phase converter valve being connected to a common DC bus; an energy storage valve, being connected in parallel with the three-phase converter valve, and the plurality of three-phase converter valves sharing the energy storage valve through the common DC bus; a switch breaker device, being arranged between the three-phase converter valve and the energy storage valve; and a control unit, being connected with the plurality of three-phase converter valves, the energy storage valve and the switch breaker device respectively. The application also provides a method for operating the multifunctional static synchronous compensator system. The multifunctional static synchronous compensator system provided by the application adopts back-to-back converter valves, shares energy storage elements through a common DC bus, and connects two AC buses to the two sides of the converter valve, so that the system can support the two AC power grids, greatly save the installation capacity of the energy storage elements in the energy storage valve, and provide power interconnection between the two AC power grids and play a role in tidal flow control.

The utility model discloses a photoelectric sensor pulse modulation circuit which comprises an RC charging and discharging circuit, a Schmitt trigger U2 and a photoelectric device driving circuit. The Schmitt trigger U2 is connected with the RC charging and discharging circuit, the Schmitt trigger U2 and the RC charging and discharging circuit are connected with the photoelectric device driving circuit, the RC charging and discharging circuit is used for generating oscillation time, and the photoelectric device driving circuit is used for driving a large-current device to operate. According to the utility model, the RC charging and discharging circuit is used for generating oscillation time; the arranged Schmitt trigger U2 is a NOT gate circuit and can realize level inversion; the photoelectric device driving circuit can be used for driving large-current devices such as a photoelectric sensor and the like; by means of the arrangement, the frequency and duty ratio modulation function of the photoelectric sensor is achieved, and frequency modulation is stable.

The invention provides a flexible distribution network fault rapid isolation control system and method. In the system, the flexible distribution network fault rapid isolation control system can control the dual-active bridge converter and the rapid switch to be switched off when a DC side fault occurs, so that the energy consumption device and the power absorption circuit rapidly limit a fault current and avoid fault diffusion, thereby reducing the power failure time and range, improving the power supply reliability of the distribution network system, and improving the power supply reliability of the distribution network system. Meanwhile, through an energy consumption device and a power absorption circuit, excessive active power is absorbed, the frequency of a power distribution network system is kept stable, the problem that the power of the dual-active bridge type converter is excessive after a fault is solved, and safe and stable operation of the power distribution network system is ensured; faults of the power distribution network system are isolated through the energy consumption device and the power absorption circuit, and the construction cost of the power distribution network system is reduced.

The invention discloses a laser two-color differential confocal fixed surface interference aspheric surface parameter measurement device and method, and belongs to the field of surface topography precision measurement, and the device comprises a laser system, a differential confocal system, an interference precision measurement system, and a signal processing system. The laser system generates a beam of long-wavelength laser and a beam of short-wavelength laser, the short-wavelength laser enters the differential confocal system and is used for positioning a to-be-measured aspheric surface, and the signal processing system adjusts the positions of the laser double-color differential confocal fixed-surface interference aspheric surface parameter measuring device and the to-be-measured aspheric surface according to positioning. The long-wavelength laser enters the interference precision measurement system and outputs an electric signal of the aspheric surface to be measured, and the signal processing system obtains a surface shape result of the aspheric surface to be measured by processing the electric signal. According to the invention, the surface of the aspheric surface to be measured can be accurately positioned, the surface shape can be quickly and precisely measured, the optical path is shared, and the method has the characteristics of high precision, high sensitivity, high resolution, strong universality and the like.

The invention discloses a control method and system for a variable frequency air conditioner with a humidity sensor, and the method comprises the following steps: S1, temperature and humidity data collection: collecting environment humidity data in real time at the frequency of 1-5Hz through the humidity sensor arranged on an indoor air return side, synchronously collecting indoor environment temperature data, and sending the indoor environment temperature data to a server; filtering, denoising and abnormal value removing processing are carried out on the collected temperature and humidity data, and the processed temperature and humidity data are transmitted to a control center. The humidity sensor collects data in real time and is combined with the temperature and humidity adaptive model, so that temperature and humidity collaborative precise adjustment is achieved, the comfort degree problems of high humidity, stuffiness, low humidity, dryness and the like caused by only temperature control of a traditional air conditioner are solved, dependence on an independent dehumidification module is not needed, operation energy consumption is effectively reduced, and the humidity adjustment response speed is effectively increased; meanwhile, fixed parameter control limitation is broken through, and the operation efficiency of the variable-frequency driving system is effectively improved.

The present application relates to a resonator and a manufacturing method thereof. The resonator comprises an interdigital transducer. The interdigital transducer comprises a bus bar unit and an interdigital electrode unit. The bus bar unit comprises two bus bars opposite in a first direction. The interdigital electrode unit is located between the two adjacent bus bars. In the first direction, the area between the two bus bars is configured as a plurality of acoustic channels based on the interdigital electrode unit. The part of the interdigital electrode unit located in each acoustic channel constitutes an interdigital electrode group. Wherein, the structure of any two adjacent interdigital electrode groups is different. And the resonant frequency of the main mode in the plurality of acoustic channels is the same. The working performance of the resonator is stable, and the excitation position and strength of the spurious wave generated in the working process of the resonator are dispersed, so that the out-of-band suppression performance of the resonator is effectively improved. And the structure of the interdigital electrode in the resonator and the structure of the interdigital electrode group can be flexibly adjusted based on actual needs. The manufacturing method is simple and easy to implement.

The present invention provides a site-level wind-storage integrated machine black start method and system based on a data-driven model, including: obtaining the operating data of the wind turbine side and the converter side of the onshore wind farm throughout the year; constructing a neural network model with the operating data as a training set; inputting the test set into the neural network model, comparing the output value with the actual value to obtain the actual and predicted deviations, and then optimizing the wind turbine data-driven model; taking the annual average of the power of a single wind turbine output by the wind turbine data-driven model, and sorting them from high to low to form a wind farm wind turbine power output capacity sequence, and thereby determining the installation position of the wind-storage integrated machine; designing a site-level black start timing based on the wind-storage integrated machine, and after all the wind-storage integrated machines are connected to the grid, calculating the total power that can be provided by the started wind-storage integrated machines and the power required by the single wind turbine that has not been started in the field. The wind-storage integrated machine black start method of the present invention is used to improve the support capacity of the wind farm for the onshore power grid.

The invention provides a hydroelectric generating set primary frequency modulation deviation correction method and system in an opening degree adjustment mode, and the method comprises the steps: obtaining a power grid frequency, a rated frequency, an actual output value of a hydroelectric generating set and a primary frequency modulation target adjustment proportion at a current moment, and determining a frequency deviation at the current moment; determining a primary frequency modulation target adjusting quantity, a primary frequency modulation reference quantity and an output target value at the current moment; when the hydroelectric generating set is in primary frequency modulation, the actual output value is not equal to the target output value and meets a first preset condition, determining a deviation correction pulse length and a pulse length gain coefficient at the current moment; according to the deviation correction pulse length and the pulse length gain coefficient, the actual deviation correction pulse length at the current moment is determined, the guide vane opening degree of the hydroelectric generating set is adjusted, and then correction of the primary frequency modulation deviation of the hydroelectric generating set is achieved. According to the technical scheme provided by the invention, the primary frequency modulation is rectified by opening the rectification pulse, the regulation performance of the primary frequency modulation is improved, and the frequency stability of a power grid is ensured.

The application discloses a novel energy storage adaptive off-grid power supply fast response control method and belongs to the technical field of energy storage control of distribution networks; circuit breaker two-side voltage, frequency, phase angle and switch action characteristic values are monitored in real time; based on voltage drop and frequency disappearance of the power grid side, combined with the difference in two-stage power grid operation states, the power-off cause is adaptively analyzed and judged; the power-off of the upper-stage power grid and the fault of the current stage are distinguished; only when the upper-stage power grid is powered off, the circuit breaker is controlled to be tripped and an off-grid signal is issued, so that the energy storage device is switched from a constant power source to a constant voltage source to establish a micro-grid independent voltage reference; during off-grid, the micro-grid voltage frequency is maintained to be stable; after the voltage of the power grid side is detected to be restored, the energy storage device is switched from the constant voltage source to the constant power source to restore the grid connection; the application realizes adaptive on-grid and off-grid switching, and improves the power supply continuity and reliability of distribution areas.

The invention relates to the technical field of electrical engineering, and provides an energy storage control method and device based on model predictive control, and the method comprises the steps: building a regional power grid frequency response model which comprises a conventional unit and an energy storage element, and the regional power grid frequency response model also comprises a local load; each state variable in the regional power grid model is input into a model prediction controller, virtual inertia control and virtual damping control are carried out on the energy storage element, the output of the virtual inertia control is in direct proportion to the frequency change rate, and the output of the virtual damping control is in direct proportion to the frequency deviation. The virtual inertia coefficient and the virtual damping coefficient of the energy storage element can be adaptively adjusted, the frequency stability of the power grid is maintained, and the recovery of the frequency of the power grid is accelerated; meanwhile, on the premise that the frequency of the power grid is not out of limit, the energy consumption of the energy storage element can be reduced, and the service life of the energy storage element is prolonged.

The invention discloses a bidirectional new energy synchronous machine system and a control method thereof, and belongs to the technical field of new energy synchronous machine grid-connected control, and the method comprises the steps: S1, collecting the real-time operation data of a power system, and initializing a controller; s2, judging whether the bidirectional new energy synchronous machine system meets a grid connection condition or not based on the real-time operation data of the power system; s3, after the two-way new energy synchronous machine system meets the grid connection condition and executes the grid connection action, the initialized controller detects the corresponding power generation state of the two-way new energy synchronous machine system; s4, when the bidirectional new energy synchronous machine system is in a grid-connected non-power-generation state, the controller sends a support instruction according to the real-time operation data of the bidirectional new energy synchronous machine system and the real-time operation data of the power system; s5, the bidirectional new energy synchronous machine system responds to the support instruction and fully utilizes the reactive power resource of the new energy synchronous machine system to adjust the voltage of the power system; the frequency stability of the power system is effectively maintained, and the stability of the power system is remarkably improved.

The invention discloses a droop control method for an isolated microgrid based on a Logistic exponential function, comprising the following steps: Step 1, establishing an isolated microgrid three-phase inverter system, including a main circuit, a measurement system, a power calculation module, a droop control module, and a voltage and current double closed-loop module; Step 2, measuring the output voltage and output current of the isolated microgrid three-phase inverter by the measurement system; Step 3, inputting the power calculation module to calculate the real-time active power and reactive power output by the inverter; Step 4, inputting the droop control module to obtain the frequency value and reference voltage value of the isolated microgrid three-phase inverter system. Step 5, subtracting the reference voltage value from the output voltage value to obtain a voltage offset, inputting the voltage and current double closed-loop module, and obtaining a space vector pulse width modulation modulation wave SVPWM after processing; Step 6, the SVPWM controls the switch of the system power tube, thereby controlling the output voltage of the system and realizing overall precise control.

The application provides a rotor slot wedge structure of a magnetically conductive and electrically conductive alloy material, and belongs to the technical field of double-shaft excited electric machines. The magnetically conductive and electrically conductive alloy is adopted, so that the rotor slot wedge structure has both electrical conductivity and magnetic conductivity, can guarantee the damping and oscillation suppression capability of the double-shaft excited electric machine, and can also run asynchronously at a large slip. The inertia support capability of the double-shaft excited electric machine is improved, and the frequency stability of the power system is guaranteed. Compared with a traditional slot wedge structure, a cross-shaped shallow groove is arranged on the surface of the slot wedge, so that the eddy current path can be blocked and the eddy current loss of the slot wedge can be reduced when the double-shaft excited electric machine runs asynchronously at a high slip. In addition, the shallow groove also increases the contact area between the surface of the slot wedge and the air in the air gap, and improves the heat dissipation capability. The double-ventilation groove setting of the air outlet of the slot wedge and the unequal outlet diameter setting are beneficial to balancing the air flow in each radial ventilation groove, reducing the axial thermal imbalance of the rotor winding, and reducing the insulation thermal stress.

The invention relates to the technical field of energy storage equipment, in particular to an energy storage power station capable of reducing loss and a system thereof.The energy storage power station comprises an assembly bottom plate, a plurality of control boxes are arranged on the assembly bottom plate, a plurality of energy storage batteries are further installed on the assembly bottom plate, first protective sleeves are arranged at the bottoms of the energy storage batteries, and top protective covers are movably installed at the tops of the energy storage batteries; when the energy storage battery works, heat is transmitted to the inner heat preservation shell through the multiple heat dissipation fins, an energy storage assembly in the energy storage battery is influenced, heat preservation measures can maintain the energy storage battery within a proper working temperature range, the performance of most energy storage batteries is optimal within a certain temperature interval, and good heat preservation can reduce performance degradation caused by temperature changes. The battery can still maintain relatively stable output power and energy efficiency at low temperature, the temperature change amplitude of the battery in the charging and discharging process can be reduced through heat preservation, battery damage caused by thermal stress and material performance change is reduced, and therefore the cycle life of the battery is prolonged.

The invention belongs to the technical field of chips, and particularly relates to an oscillating circuit capable of generating fixed frequency and adjustable duty ratio, which comprises a charging and discharging part, an RDAC part and a high-speed comparison part, wherein the charging and discharging part is used for charging and discharging and comprises a PMOS tube and an NMOS tube; the RDAC part is used for controlling the resistance and the charging and discharging current, and comprises a plurality of XNOR gates, a plurality of switches and a plurality of resistors; and the high-speed comparison part comprises a capacitor, a comparator, a buffer and a phase inverter, and is used for controlling the comparison between the charging and discharging voltage and different reference voltages to finish overturning and feeding back and controlling the switch of the RDAC circuit. Compared with the prior art, the circuit has the advantages that the circuit is simple in structure, the circuit with the adjustable duty ratio is realized by adopting the same series of resistors and capacitors for charging and discharging at different duty ratios, the frequency is very stable, the duty ratio is adjustable, the structure is simple, and the tolerance to voltage and process mismatch is relatively high.

According to the FCB isolated island operation method for the gas-steam combined cycle generator set, the FCB isolated island operation function of the gas-steam unit can be achieved, the whole process is automatic without manual intervention, and the FCB isolated island operation method has been successfully applied to a first 9HA gas-steam combined cycle one-driving-one unit in China; dynamic tests of 50% rated load FCB isolated island operation and 100% rated load FCB isolated island operation of the unit are successful at a time, and the unit has power grid black-start capability. The successful test of the FCB island operation of the unit provides technical basis and empirical data for the FCB island operation of the same type of units in China in the future. The method is suitable for the fuel gas-steam combined cycle generator set, when a power grid or a line breaks down, the set is instantly and rapidly reduced from a high load to a plant power load for operation, the set keeps the rotating speed of 3000rpm, the system frequency is kept to be 50Hz, and plant power operation can be effectively maintained.

The invention belongs to the technical field of optical storage all-in-one machine control, and particularly relates to an optical storage all-in-one machine frequency indifference and dynamic mutual damping compound control method. Comprising the following steps: S1, establishing a mathematical model for parallel connection of multiple virtual synchronous generators; s2, carrying out frequency indifference control, enabling the optical storage all-in-one machines to quickly recover to a rated frequency after load disturbance through a distributed frequency consistency algorithm, and achieving the accurate distribution of the active power of each optical storage all-in-one machine; s3, dynamic mutual damping control is carried out, a dynamic mutual damping item is introduced between the optical storage all-in-one machines, the damping characteristic of the system is enhanced, and the problems of active power overshoot and oscillation caused by load disturbance are restrained; according to the method, two strategies of frequency indifference control and dynamic mutual damping control are combined, under the condition of not depending on communication, the frequency stability and power adjustment of the district micro-grid are ensured, and the dynamic response performance and the disturbance rejection capacity of the system are remarkably improved.

The present invention proposes a voltage and frequency stabilizing device for a drilling platform diesel generator system based on SVG, wherein the power module of the voltage and frequency stabilizing device includes an H-bridge circuit and a DC side capacitor C connected in parallel therewith, and also includes an active power regulating circuit connected in parallel at both ends of the H-bridge circuit, wherein the active power regulating circuit includes a fully controlled switching device VT5 and a resistor Rb connected in series therewith. The active power consumed by Rb is adjusted by adjusting the PWM wave of the input pulse width variation of the fully controlled switching device VT5; SVG independently controls the active branch and the reactive branch, so that SVG regulates the reactive power of the power grid while ensuring that the active power of the power grid changes smoothly according to the settable inertia link in the case of a sudden change in the active power of the load, thereby stabilizing the voltage and frequency of the power grid and ensuring the stable operation of the island operation generator.

The application discloses an energy storage system of a range-extended emergency and power supply source vehicle, relates to the technical field of energy storage control, and realizes seamless switching of multiple modes, collaborative scheduling of multiple energy sources and adaptive regulation of loads through integration of a multi-mode operation control module, a multi-source energy supplement coordination module, a load adaptive regulation module and a safety management and control module. Six preset energy supply modes can be automatically switched according to different working conditions and uninterrupted transition in the mode switching process is ensured. A plurality of energy supplement sources can work in parallel, and energy supplement power can be dynamically distributed. Load power change data can be collected in real time, the output power ratio of energy storage and a generator can be dynamically adjusted, and power supply stability is ensured. Meanwhile, the running state of the energy storage system is monitored in real time, fault early warning and protection actions are performed, and a fire-fighting system is linked to realize whole-process safety protection.