8 results about "Power quality control" patented technology

The application relates to the technical field of power quality monitoring and treatment, and discloses a power quality control method for a power distribution network and computer equipment. The method comprises the following steps: acquiring real-time operation data of the power distribution network and original power quality signals of a disturbance node, decomposing the signals and determining an optimal decomposition modal number with the minimum total variance as the target; determining a key time sequence feature set based on the optimal decomposition modal number and a preset disturbance type label; reasoning a disturbance propagation path from the disturbance node as the starting point in the topology structure of the power distribution network, and determining the voltage change rate of each node; screening candidate measures based on the voltage change rate, the feature set and a threshold value, combining a preset evaluation index to construct a judgment matrix; determining a priority weight based on the judgment matrix to determine optimal treatment equipment; and determining dynamic output parameters according to index measured values, reference values and real-time data, and controlling the optimal treatment equipment to operate according to the dynamic output parameters. The application can improve the accuracy of controlling power quality disturbances of the power distribution network.

The application discloses a parameter optimization active disturbance rejection control method and device of a unified power quality controller, and the method comprises the following steps: collecting load side voltage and load side current of the unified power quality controller; inputting the load side voltage and a load side voltage reference value into an optimized active disturbance rejection controller to obtain a series side converter output voltage reference value, which is used for controlling the series side converter output voltage; and adopting an atomic search algorithm to perform parameter optimization on controller parameters, and applying the optimized controller parameters to the optimized active disturbance rejection controller. According to the above technical scheme, the active disturbance rejection control can make the system better adapt to external disturbances; the atomic search algorithm is introduced to perform parameter optimization on the controller parameters, and the controller parameters are efficiently set and have practical operability.

This invention discloses an adaptive collaborative charging method and system for power quality control equipment. The method includes: collecting power quality control data from a distribution substation and obtaining standardized feature vectors; extracting features to generate a spatiotemporal feature matrix of electrical correlations of the power quality control equipment; constructing a state prediction model to predict the state transition trend of power quality control in the distribution substation and obtain the optimal charging stage strategy; constructing a multi-objective optimization model and combining it with a distributed collaborative control algorithm to obtain the charging control parameters of the power quality control equipment; and designing an adaptive law model to adjust the charging control parameters in real time and perform dynamic evaluation. This invention, through intelligent collaborative design across the entire chain, achieves deep adaptation between the charging of the power quality control equipment and the operating state of the distribution substation. While ensuring safe and stable charging and extending battery life, it significantly improves the renewable energy absorption rate of the substation and reduces line losses.

The present application relates to the technical field of power quality control, and discloses a reactive power dynamic on-site balancing method based on an AI model algorithm, which comprises the following steps: acquiring three-phase waveform data and denoising, extracting dynamic characteristics to construct an orthogonal decoupled intention coordinate system, demarcating a steady-state region and constructing a time sequence characteristic set, and outputting an intention state set through logical judgment; constructing a time-space credit funnel region based on the intention state set, deducing a time-space state point trajectory and generating a time-space instruction by using a characteristic prediction model; performing impedance safety checking on the time-space instruction to obtain an action signal; analyzing the action signal to generate a physical control instruction, and obtaining a strategy parameter set through a posterior adjustment mechanism. The present application solves the problems of time-space mismatch and frequency domain dimension collapse of differential control and integral assessment, and realizes the global optimization of reactive power compensation between assessment compliance and physical safety.

This invention discloses a photovoltaic (PV) equipment control method and system, relating to the field of PV power control technology. The PV equipment control method acquires the operating sequence data of the PV inverter and the thermal imaging time-series data of the PV surface of the target PV equipment; it performs correlation and integration processing on the operating sequence data of the PV inverter of the target PV equipment to extract the inverter power quality assessment value; based on a pre-trained thermal imaging power quality mapping model, it performs power mapping processing on the PV surface thermal imaging time-series data to obtain the PV power quality mapping assessment value of the target PV equipment; and combines this with the inverter power quality assessment value for comprehensive analysis to obtain the grid-connected power quality assessment value of the target PV equipment. This invention performs power quality control processing on the target PV equipment through the grid-connected power quality assessment value, thereby achieving collaborative perception of PV power quality and ensuring that the grid-connected power quality assessment value can fully reflect the power quality status of the entire link, thus guaranteeing the stable adaptation of the PV equipment to the power grid.

A method and apparatus for validation of power quality control application, a device, and a storage medium, the method being implemented by means of a transparent full-scale distribution transformer area platform. The method comprises: on the basis of testing requirements, and in combination with the transparent full-scale distribution transformer area platform, editing and generating a test scheme; on the basis of the test scheme, setting parameters for the transparent full-scale distribution transformer area platform and setting parameters for a validation scenario; testing an Internet-of-Things platform constructed by means of an intelligent gateway, intelligent switches, and intelligent sensing terminals in the transparent full-scale distribution transformer area platform after parameter setting, and monitoring test data during testing to acquire terminal sensing data; and by means of the Internet-of-Things platform, and on the basis of the terminal sensing data, analyzing and evaluating test results of a control device to be tested or a control method to be evaluated, and generating a test analysis report. According to the solution, the technical problems in the existing technology of low reliability of power quality control application validation platforms and methods and low power quality level in distribution transformer areas are solved.

This invention discloses a parameter optimization method and apparatus for active disturbance rejection control (ADRC) of a unified power quality controller. The method includes: acquiring the load-side voltage and load-side current of the unified power quality controller; inputting the load-side voltage and load-side voltage reference values ​​into the optimized ADRC to obtain a reference value for the output voltage of the series-side converter, which is used to control the output voltage of the series-side converter; optimizing the controller parameters using an atomic search algorithm; and applying the optimized controller parameters to the optimized ADRC. By employing the above technical solution, ADRC enables the system to better adapt to external disturbances; the introduction of the atomic search algorithm for controller parameter optimization allows for efficient tuning of controller parameters with practical operability.

This invention discloses a power flow controller (TPFC) for multiple transformers, applied to power flow regulation and power quality management among multiple transformers. The controller includes two ports, a first transformer, a second transformer, three controllable converters, a DC bus, a coupling module, and a comprehensive control unit. By introducing a multi-converter collaborative control structure on the low-voltage side of the transformers, it achieves balanced power flow redistribution, unbalanced power flow management, and power quality control. This device can improve transformer capacity utilization, reduce operating losses, and achieve capacity mutual assistance among transformers based on load characteristics. It is suitable for flexible power flow regulation among multiple power transformers and for managing power quality issues such as high / low voltage and harmonics.