97 results about "Inertial response" patented technology

The invention relates to a shared energy storage virtual inertia compensation control method for wind power cluster collection, and belongs to the technical field of power system control. In order to solve the problem of insufficient cooperative control of a wind power system and an energy storage system in the prior art, a dynamic model is established by obtaining operation parameters, and the dynamic model comprises a wind turbine generator active power control model and an energy storage system charging and discharging model; designing a virtual inertia control strategy, and introducing virtual inertia control to simulate inertia response characteristics of the synchronous generator; shared energy storage coordination control is carried out, and a strategy is designed by using an MPC method according to an inertia demand and an SOC state; establishing a frequency dynamic response model and calculating inertia response time as a virtual inertia control start-stop condition; and optimizing controller parameters and designing locking logic by adopting an intelligent algorithm. The method can improve the system performance and efficiency, enhance the frequency stability, improve the energy utilization efficiency of the energy storage system, optimize the system performance, and improve the system stability and reliability.

The invention relates to the technical field of power system frequency, and discloses a thermal power generating unit-energy storage coupling frequency modulation system for improving power grid frequency stability, which comprises a thermal power generating unit module, an energy storage system module, an energy management and distribution control module and a communication and monitoring module. The thermal power generating unit provides a frequency stabilization basis through inertia response and power regulation, and the energy storage system compensates frequency deviation in a quick response mode. And the energy management module dynamically adjusts the power distribution proportion between the thermal power generating unit and the energy storage system based on the optimized objective function to realize efficient collaborative frequency modulation. The output power and the state of charge of the energy storage system are controlled by constraint conditions. The communication and monitoring module collects power grid frequency, load fluctuation and energy storage state data in real time, generates frequency modulation control signals and issues the frequency modulation control signals to each module. By combining the stability of the thermal power generating unit and the quick response characteristic of the energy storage system, the response speed and the adjustment precision of power grid frequency adjustment are remarkably improved, and meanwhile the frequency adjustment cost is reduced.

The invention discloses a method for preventing power reverse peak regulation by coupling primary frequency modulation and virtual inertia of a network-forming type fan, and the method effectively prevents power reverse peak regulation by dynamically decoupling the coupling effect of primary frequency modulation and virtual inertia and adjusting an amplitude limiting threshold value based on a real-time working condition. The adaptive amplitude limiting control strategy adjusts an amplitude limiting threshold value in real time according to parameters such as power grid frequency deviation, frequency change rate and fan operation state, optimizes fan power output, and avoids excessive power fluctuation. The virtual inertia compensation module simulates inertia response of a traditional generator set, provides extra inertia support and stabilizes frequency fluctuation of a power grid. The hierarchical control architecture realizes the balance of virtual inertia and frequency modulation control through the synergistic effect of an upper decision layer and a bottom execution layer, and avoids the phenomenon of reverse peak regulation of power. The control strategy not only improves the frequency modulation response speed and precision, but also enhances the adaptive capacity of the fan to the frequency fluctuation of the power grid, and has important application value and wide market prospect.

The invention discloses a primary frequency modulation method and device for a new energy station containing energy storage, and the method comprises the steps: building a self-adaptive control model of the virtual inertia and damping coefficient of the new energy station based on the rotational inertia of a synchronous generator and the control direction of the damping coefficient through the angular frequency variation and the angular frequency change rate; taking the minimum angular frequency cumulative variation in the sampling time period as a target function of the adaptive control model; based on the objective function, an improved particle swarm algorithm is adopted to iteratively solve the adaptive control model, and optimal solutions of the virtual inertia and the damping coefficient are obtained; constructing an inertia response stage frequency adjustment coefficient according to the optimal solution of the virtual inertia and the damping coefficient; constructing a variable coefficient droop control model according to the inertia response stage frequency adjustment coefficient and the droop control stage frequency adjustment coefficient; and performing primary frequency modulation control on the new energy station containing energy storage based on the variable coefficient droop control model. According to the invention, VSG control and droop control combining new energy power generation and energy storage are realized, and comprehensive primary frequency modulation control is carried out.

A device, method, and non-transitory computer readable medium for controlling a power distribution system includes an islanded microgrid and a control system. The islanded microgrid includes battery energy storage systems (BESSs) that operate as a primary energy source, and a decentralized consensus-based virtual synchronous generator (VSG). The control system simultaneously, emulates inertial response of a synchronous generator by the virtual synchronous generator during grid disruptions to regulate and stabilizes frequency of the islanded microgrid, and maintain consensus among the plurality of battery energy storage systems (BESSs).

The invention discloses a new energy inertia support self-adaptive control method based on a cloud model, and belongs to the technical field of cloud model self-adaptive control. Based on a traditional synchronous generator second-order classic model, a new energy unit control system is used for simulating inertia response characteristics of a traditional synchronous generator set. The maximum advantage of the method is that parameters can be adaptively changed, and the degree of freedom of new energy inertia support is increased; a power grid side frequency variable quantity and a change rate are used as input, a cloud inference rule of virtual inertia is designed according to a relationship between the virtual inertia and the power grid side frequency variable quantity and the change rate, and cooperative self-adaption of parameters is realized through a cloud model, so that new energy can adaptively adjust the virtual inertia when a system is subjected to external disturbance, and the system is more stable in performance. And stable operation of the system is ensured.

The invention discloses a power transmission and distribution power grid robust optimization unit scheduling method based on the whole frequency response process, and relates to the technical field of power systems. The method comprises the following steps: constructing a whole-process frequency security constraint around three links of inertial response, primary frequency modulation and secondary frequency modulation, establishing a power transmission and distribution network two-stage robust unit combinatorial optimization model considering the whole frequency response process by taking min-max-min as a structure, and minimizing the start-stop cost, the power generation cost and the standby cost of the primary frequency modulation and the secondary frequency modulation as a target; and converting the two-stage robust unit combinatorial optimization model of the power transmission and distribution network into a mixed integer second-order cone programming model by adopting a column sum constraint generation algorithm and a strong duality theory, and carrying out iterative solution. According to the method, the frequency regulation capability of the power transmission and distribution network can be effectively improved, the operation cost is reduced, the robustness and efficiency of a scheduling scheme are improved, and safe, stable and economical operation of the power transmission and distribution network under the output uncertainty condition of new energy such as wind and light is ensured.

The invention discloses a continuous production method of pellet feed, and relates to the technical field of industrial automation control. The method comprises the following steps: creating a modulation control function and a granulation control function based on fixed parameters and process parameters, adjusting inlet steam flow according to the modulation control function so as to adjust the moisture content of an intermediate material, and adjusting the rotating speed of a die roller according to the granulation control function so as to adjust the hardness of a finished product. The hardness of a finished product is monitored in real time, an equipment insensitive area is predicted, when the equipment insensitive area is larger than a preset value, the inertia response process of hardening and tempering equipment or granulation equipment is extracted, and a control pole is calculated according to the inertia response process. If the control pole of the modulation equipment or the granulation equipment is shifted, the insensitive area of the equipment is optimized by adjusting the hardening and tempering process parameters or the granulation process parameters, and it is guaranteed that the system rapidly responds to the characteristic change of the raw materials. Through collaborative optimization of a control mechanism and parameters, the product quality stability under different raw material ratios is effectively improved, and meanwhile production fluctuation caused by equipment inertia is reduced.

The invention provides a multi-modal fusion power transmission line operation state monitoring method based on laser point cloud, and relates to the technical field of monitoring and early warning, and the method comprises the steps: employing a laser point cloud radar to extract inertial data, synchronously obtaining spatial point cloud data, and obtaining high-precision processing data through registration fusion, combined filtering and multi-scale error correction; establishing a mapping relation between a point cloud contour and inertial response by combining a tower structure characteristic model, performing cross validation and constraint optimization on a point cloud three-dimensional variable quantity and an attitude variable quantity, and converting the point cloud three-dimensional variable quantity and the attitude variable quantity into an inclination variable quantity relative to a reference coordinate system; and a multi-period state estimation model is further constructed, historical postures and deformation data are fused to identify deformation features, differential thresholds are set for different types of towers, and structural deformation is judged and identified through deviation monitoring and rate overrun and a result is output. According to the invention, the change of the tower can be comprehensively identified, and structural abnormity can be timely found to monitor the running state of the power transmission line.

The invention relates to the technical field of energy collection systems, and discloses a combined low-frequency vibration energy collector which comprises a lower-layer structure and an upper-layer structure which are combined to form an upper-layer and lower-layer coupled structure. The lower layer structure is an arc-shaped flexible beam, and the arc-shaped flexible beam is used for collecting piezoelectric energy generated by bending deformation; the upper layer structure is a T-shaped cantilever beam, the T-shaped cantilever beam is used for responding to bending modes in different directions and realizing multi-point energy collection, and the energy collection efficiency is improved by introducing mass load to regulate and control structural dynamic behaviors; the first end of the arc-shaped flexible beam is used for being fixed to the edge of a base to conduct energy conversion, the second end of the arc-shaped flexible beam supports the upper layer structure through the first mass block and is combined to form an integrally-connected composite vibration system used for transmitting inertial response, and the first mass block is used for adjusting the inherent frequency to be matched with a low-frequency vibration source.

The invention discloses an energy storage converter damping enhancement control method based on feedforward control. The method comprises the following steps: establishing an active power flow model of an energy storage converter system; adding an additional degree of freedom to the model to generate an improved active power flow model; ignoring a voltage loop and a current loop, and simplifying the improved active power flow model to obtain a small signal model; designing a feedforward controller Gc (s); and substituting the Gc (s) into the small signal model to obtain a damping-enhanced active power flow model of the energy storage converter. According to the method, a feed-forward path is introduced to improve the damping level, and by applying the method, power oscillation can be effectively attenuated under the condition that original inertial response is not affected; the damping effect and the power dynamic state can be flexibly adjusted to any specific level; and under the condition that system parameters are available, automatic setting and real-time self-adaption of the feedforward controller are realized. Meanwhile, under the condition that the power grid frequency suddenly changes, the rapid change of the active power generated by the original inertia response is beneficial to maintaining the stability of the power grid frequency.

The present application relates to the technical field of energy storage, and discloses an energy storage power control method, apparatus, and device, and a storage medium, which are used for carrying out energy storage power control taking into account the power requirements of inertial response, primary frequency control, and automatic generation control, so that conflicts among control functions are avoided. The method comprises: in response to an energy storage power control instruction, determining whether an inertial response requirement or a primary frequency control response requirement exists in an energy storage control system; if no inertial response requirement or primary frequency control response requirement exists, determining whether an automatic generation control function is in an enabled state; if the automatic generation control function is in the enabled state, determining a control power value corresponding to the automatic generation control function to be a target energy storage power value; and, according to the target energy storage power value, performing energy storage power control on the energy storage control system.

The invention relates to the technical field of converter inertia control, in particular to a grid-connected converter virtual inertia control device and method based on a frequency-locked loop, and the method comprises the steps: introducing a three-phase frequency-locked loop and a frequency controller into a virtual inertia control module, and obtaining an active current reference value of a d-q axis and a reactive current reference value of the d-q axis according to the frequency change of a power grid; an improved MPC algorithm is introduced into a current loop, a future current track is predicted according to an active current reference value of a d-q axis and a reactive current reference value of the d-q axis, and a voltage control signal is generated; and the PWM module converts the voltage control signal into a switch control signal through pulse width modulation and outputs the switch control signal to the grid-connected converter. According to the invention, the induction power grid frequency change and the power reference signal are organically combined, the problem of frequency instability of a traditional phase-locked loop structure under a weak power grid condition is solved, and the problem that a single-phase frequency locker has a large number of ripples and generates negative effects on inertial response of a system is solved.

The invention relates to the technical field of power system equipment, in particular to a flywheel energy storage phase modifier system based on a brushless doubly-fed motor, which comprises a large-inertia flywheel, the brushless doubly-fed motor, a switch, a converter, a transformer and a power grid, according to the integrated system, the advantages of the synchronous phase modifier, the brushless doubly-fed motor and the flywheel energy storage technology are combined, the good inertia response capability is achieved, an electric brush and a sliding ring are omitted for the brushless doubly-fed motor, the reliability of high-rotating-speed operation is improved, and the operation and maintenance cost is reduced. Through flexible control of winding alternating current excitation and wide-range rotation speed interval operation, rapid active and reactive power support can be provided for a power grid, and multiple functions of power generation, energy storage, phase adjustment and the like can be realized. According to the method, the inherent inertia level of the power system can be remarkably improved, transient active-frequency support is realized in a strong disturbance scene, meanwhile, the dynamic reactive-voltage compensation capability is realized, and the frequency and voltage stability of the power system can be effectively maintained.

The invention relates to an offshore wind power frequency control method and system and a readable storage medium, and the method comprises the steps: constructing an offshore wind power plant frequency model based on the inertia or power synchronization characteristic of a grid-connected control strategy of a current fan, and correcting an inertia response coefficient of the offshore wind power plant frequency model in consideration of the uncertainty change of a wind speed; performing primary frequency modulation on the offshore wind power plant based on model prediction control so as to merge an offshore wind power plant frequency model into an alternating current power grid, and constructing a system frequency response model containing offshore wind power; and performing iterative optimization on control parameters in the system frequency response model by adopting a reinforcement learning algorithm. A system frequency response model containing offshore wind power is constructed by considering model dynamic parameters caused by wind speed output changes, then control parameters in the model are optimized in real time by adopting reinforcement learning, self-adaptive adjustment is carried out aiming at the changes of the control parameters, the dependence on a traditional constant control model is reduced, and the system performance is improved. Therefore, the optimal frequency control effect is realized.

The invention provides a grid-connected frequency modulation control strategy based on photovoltaic power prediction so as to solve the problems of stability and safety of a power system under high-proportion photovoltaic grid connection. According to the strategy, new parameters representing characteristics of a traditional synchronous generator set and a photovoltaic system are introduced, and a control strategy of a power grid side inverter is improved based on actual grid-connected working conditions. Meanwhile, a frequency dynamic response model considering the photovoltaic penetration influence is established, and the inertia response of the synchronous generator set is accurately simulated by introducing the dynamic characteristics of a power grid side direct current capacitor. And by adjusting the virtual inertia and the adjustment factor, the anti-disturbance capability of the photovoltaic system is enhanced. In combination with historical photovoltaic power generation data, the photovoltaic power is predicted by adopting data normalization, feature selection, SOM clustering analysis, singular spectrum analysis and a full-connection network model, and the prediction accuracy is improved. And the control strategy is combined with the power prediction result to realize efficient and stable frequency modulation control of the grid-connected photovoltaic system.

The invention relates to the technical field of wind power equipment, and discloses a floating type wind power device which comprises a wind power unit and a wind power platform. At least three box type connecting structures are uniformly arranged in the circumferential direction of the fan base; the ballast block is coaxial with the fan base; and the damping device is arranged in the box type connecting structure in a sliding mode and comprises a damper, the end, away from the fan base, of the damper is anchored to the seabed through a first mooring system, and the end, facing the fan base, of the damper is connected with the ballast block through a second mooring system. The sliding damping device is arranged in the box-type connecting structure, the environmental load is introduced into the damper through the first mooring system, the inertia response of the ballast block is introduced into the damper through the second mooring system, two paths of input are coupled at the damper, vibration energy is consumed through the hydraulic damping effect, and the damping effect is improved. The stability and safety of the platform under complex sea conditions are remarkably improved, and the surging, swaying, heaving and yawing movement of the platform is effectively restrained.

The present invention discloses a frequency modulation method that takes into account the flexible exit of thermal inertia of an integrated energy system. First, the slow-motion characteristics of the thermal system in the integrated energy system are deeply explored and modeled, and then the potential of thermal inertia to respond to power shortages in the power grid is used to provide support for power grid frequency failures. At the same time, the importance of heat demand to different heat loads is considered, allowing thermal inertia to be flexibly exited during the frequency modulation process according to the importance of heat demand. The present invention proposes a new idea for supporting power grid frequency failures, which ensures that the thermal inertia of the integrated energy system is fully utilized while also ensuring the heat demand of the load, thereby enhancing the safety and flexibility of system operation.

A device, method, and non-transitory computer readable medium for controlling a power distribution system includes an islanded microgrid and a control system. The islanded microgrid includes battery energy storage systems (BESSs) that operate as a primary energy source, and a decentralized consensus-based virtual synchronous generator (VSG). The control system simultaneously, emulates inertial response of a synchronous generator by the virtual synchronous generator during grid disruptions to regulate and stabilizes frequency of the islanded microgrid, and maintain consensus among the plurality of battery energy storage systems (BESSs).

The invention discloses a system efficiency improvement method for enabling stored energy to participate in multi-link regulation and control of a power grid under a CPS standard, and belongs to the field of electric power. The method comprises the following steps: firstly, constructing a frequency response model of the regional power grid based on a resource cooperation frequency response process by analyzing frequency response characteristics of various adjustment resources in the regional power grid; secondly, providing an inertia demand evaluation method by respectively quantifying the minimum inertia demand under the frequency deviation constraint and the frequency change rate constraint; meanwhile, key indexes such as frequency deviation and regional control errors are collected by using an SCADA system, and CPS indexes are calculated to measure the energy storage frequency regulation and control level in combination with existing CPS assessment rules in a certain province in the north. And finally, by taking cost minimization as a target and taking an inertia demand and a CPS index as constraints, constructing an optimization improvement model of energy storage participating in multi-link regulation and control. The energy storage optimization control strategy provided by the invention aims at reducing the overall cost of energy storage regulation and control on the basis of meeting the multi-link regulation and control requirements of regional power grid inertia response, frequency control and the like, and further effectively improving the overall efficiency level of the system.

The invention provides a high-proportion renewable energy electric energy quality regulation resource cooperation-autonomy method, which belongs to the field of energy, and comprises the following steps: constructing a phase angle feed-forward VSG single-machine active-frequency control model; the method comprises the following steps: constructing an active-frequency response model of a phase angle feed-forward compensation VSG system according to a single-machine active-frequency control model of a phase angle feed-forward VSG (virtual synchronous generator); a phase angle feed-forward parameter optimal configuration method of an active-frequency response model of the phase angle feed-forward compensation VSG system is deduced, autonomous parameter matching and oscillation suppression of the multi-VSG system are realized by constructing a three-layer control architecture of local perception-neighborhood cooperation-global stability, active oscillation after disturbance is eliminated, and the optimal configuration of the phase angle feed-forward parameter of the active-frequency response model of the phase angle feed-forward compensation VSG system is realized. And high-proportion renewable energy source electric energy quality regulation resource collaboration-autonomy is realized. According to the invention, active oscillation cooperative suppression is realized, and the inertia response adjusting capability of the system is completely reserved.

The invention relates to the technical field of power system operation and control, and discloses a pooling station monitoring data-based new energy base rapid frequency supporting capability monitoring method, which comprises the following steps of: firstly, automatically identifying a disturbance moment based on frequency and power change characteristics, and carrying out smoothing and exception suppression processing on disturbance data; then combining frequency response mechanisms of wind power, photovoltaic and energy storage equipment to construct an inertia response characteristic and primary frequency modulation characteristic model of the new energy base, and identifying an equivalent inertia constant and an equivalent droop coefficient of the base by using measurement data during disturbance; solving the external equivalent reactance of the new energy base based on the sensitivity relationship between the complex power and the voltage phasor; and finally, calculating the fast frequency support capacity, sustainable support duration and frequency response index of the new energy base in combination with the parameters, thereby realizing online monitoring and evaluation of the fast frequency support capacity.

The invention belongs to the technical field of double-fed wind turbine generator virtual quantity regulation and control, and particularly relates to a double-fed wind turbine generator virtual inertia control method based on dynamic power tracking. Comprising the following steps: compiling a maximum power point tracking database under different wind speed conditions and different fan rotating speed conditions; the frequency change amplitude of the system is detected, and MPPT curve adjustment is carried out when the frequency drops or climbs and exceeds a set per unit value; when the system frequency drops, the MPPT curve is moved to the left side, the electromagnetic power output of the generator set is increased, and the kinetic energy of a rotor is released to participate in inertial frequency response; when the system frequency climbs, the MPPT curve is moved to the right side, electromagnetic power output of the generator set is reduced, and electric energy is absorbed and converted into rotor kinetic energy to participate in inertial frequency response; and after the inertial response is completed, the fan gradually returns to the optimal MPPT output point at the current wind speed. The inertia response link is added in the control module of the DFIG wind turbine generator, so that the fan can quickly respond to the system frequency change.

The invention relates to the technical field of building energy conservation and electric power systems, in particular to an office park air conditioner energy conservation and aggregation control method and device considering building thermal load inertia response, and the method comprises the steps that an air conditioner regulation and control potential model fused with a second-order equivalent thermal parameter model is constructed, optimizing by combining long and short-term memory network prediction and a non-dominated sorting genetic algorithm; a day-ahead-day-real-time multi-time scale cooperative control strategy is designed; a homogeneity and heterogeneity air conditioner aggregation model and a group control strategy are established, the homogeneity model meets the condition that the thermal resistance similarity is larger than or equal to 0.9, the thermal capacity similarity is larger than or equal to 0.85, and the heterogeneity model meets the condition that the parameter correlation is smaller than or equal to 0.3. The system comprises five core modules, the start and stop amplitude of the air conditioner can be reduced by 60%, the average daily energy saving rate is 8-9.8%, the polymer power fluctuation is smaller than or equal to + / -2.3%, the comfort level standard reaching rate is larger than or equal to 96%, the response power grid emergency load shedding delay is smaller than or equal to 200 ms, the system is suitable for multi-brand and multi-type air conditioners, and construction of a novel electric power system is assisted.

The invention belongs to the technical field of safety and stability of a power system, and particularly relates to a power system inertia estimation method considering an electrical distance and an inertia center, which comprises the following steps: firstly, introducing a correlation matrix to represent the electrical distance between generator buses, defining an inertia center parameter, and collecting frequency data by using the inertia center; and defining and calculating an inertia time constant of the power system through a swing equation in combination with power disturbance generated by the power system, and mastering the inertia level of the power system in real time. Due to the fact that inertia distribution in a power system is not uniform, frequency response differences after disturbance are more obvious, and inertia estimation errors when different frequency collection points are selected have randomness, the invention provides a power system inertia estimation method considering an electrical distance and an inertia center. The sampling of the single bus frequency can most accurately represent the frequency change of the inertial response of the system, so that the error of inertial evaluation is reduced.

The invention discloses a virtual droop control and virtual inertia control switching method based on a logistic function, and relates to the technical field of high-voltage flexible direct-current power transmission. The method comprises the following steps: obtaining the topology of a super-capacitor energy storage type modular multilevel converter and the topology of a double-end bipolar flexible DC system based on the super-capacitor energy storage type modular multilevel converter; the inertia response characteristic and the droop response characteristic of a receiving end power grid in the flexible direct current sending-out system based on the super capacitor energy storage type modular multilevel converter are analyzed; designing a virtual droop control and virtual inertia control switching strategy based on a logistic function; and performing simulation verification on a virtual droop control and virtual inertia control switching strategy. The method is simple and easy to implement, virtual droop control and virtual inertia control can be assisted to be switched in a smoother mode by introducing the logistic function, the impact of switching of a traditional control strategy on the power grid can be effectively avoided, and the transient stability of the power grid is improved.

The invention relates to a segmented frequency control method for a wind power system cooperating with power reserve and short-term over-generation. The method comprises the following steps: S1, obtaining operation data when the wind power system is disturbed; s2, considering the real-time rotating speed of a rotor of the wind power system in an inertia response stage based on the operation data during disturbance, and introducing a short-term power overrunning control method to increase the output power of a fan in a short term, so as to realize frequency control of the fan system in the inertia response stage; and S3, the wind power system enters a primary frequency modulation stage, and frequency control of the fan system in the primary frequency modulation stage is realized by adopting a continuous power output method based on power reserve. Compared with the prior art, the method has the advantages that the frequency recovery process under a longer time scale is considered, and the economic performance and the energy utilization efficiency are better while the frequency safety is ensured.

The invention discloses a road area new energy frequency stability control method considering uncertainty of new energy, and relates to the technical field of road area new energy, comprising the following steps: collecting data of a road area new energy power generation system, and constructing an inertial response controller parameter optimization problem model; constructing a controller parameter adaptive optimization additional learning structure based on adaptive dynamic programming (ADP), and calculating an optimal control parameter; training and constructing an evaluation network CNN online algorithm and an execution network ANN online algorithm based on a gradient descent method; and analyzing the convergence of the inertial response controller parameter optimization method, and verifying the effectiveness of the inertial response controller parameter optimization method. According to the method, an inertia response controller parameter optimization and self-adaptive adjustment technology is provided, the frequency stability of a road domain power system is effectively improved, controller parameters are optimized on line on the premise that the rotating speed is not out of limit, and the primary frequency modulation supporting capacity of a road domain doubly-fed fan is provided.

This application provides a new energy power generation grid connection control method and control device, relating to the field of grid connection control technology. The new energy power generation grid connection control method is applied to a new energy power generation-energy storage transmission system. The control method includes: acquiring grid frequency information; responding to the grid frequency information, obtaining inertial response data and frequency regulation data; responding to the inertial response data and the frequency regulation data, controlling the new energy power generation-energy storage transmission system to provide inertial response and frequency regulation strategies to the grid, and the new energy power generation-energy storage transmission system couples a preset capacity of energy storage to a DC bus through a preset circuit. The control method enables the new energy power generation-energy storage transmission system to autonomously support the grid, providing real-time and reliable active frequency support to the grid.