6 results about "Electric power quality" patented technology

The invention provides a power distribution energy high-quality energy supply service method, system, device and medium facing user diversified demands, and belongs to the technical field of power distribution, and the method comprises the steps: collecting user power consumption quantity data and user power consumption quality data at the same timestamp in real time; calculating a power quality index; judging whether the user power consumption increase amount is greater than a user power consumption increase threshold value or not, and if yes, generating an overload signal; judging whether the power quality index is greater than a quality index threshold, if so, generating a poor-quality signal, and performing early warning; calculating a socket load amplification and an overload index in response to the overload signal; whether the overload index is larger than the overload index maximum value or not is judged; if yes, an overload abnormal signal is generated, and early warning is carried out; and if not, updating the power utilization increase threshold value of the user. The system collects data in real time, evaluates the power quality, dynamically adjusts the power utilization threshold, distinguishes real overload from normal capacity increase, improves the flexibility of a power distribution system, reduces the operation and maintenance cost, and guarantees the power utilization safety.

The application provides a power distribution box power quality optimization method and device, and belongs to the technical field of smart grids. The method comprises the following steps: determining three-phase electrical effective value data based on three-phase electrical sampling data at the outlet of a smart grid terminal power distribution box; determining a power factor, a load change rate, a total harmonic distortion rate and a three-phase imbalance degree based on the three-phase electrical effective value data; determining an electric power quality disturbance grade type based on the total harmonic distortion rate, the three-phase imbalance degree and the power factor; determining a power distribution box operation scene type based on the load change rate, wherein the operation scene type is a steady-state scene or a transient mutation scene; determining the governance weight of a plurality of governance components based on the electric power quality disturbance grade type, determining a hierarchical governance instruction based on the governance weight of the plurality of governance components; and generating a scene-adaptive governance instruction based on the hierarchical governance instruction and the operation scene type. The application can realize hierarchical and accurate governance of power distribution box power quality disturbances and adapt to the development needs of smart grids.

The present application relates to the technical field of low-voltage droop power adjustment at the end of rural power grid, and discloses a self-adaptive droop power control system for treating low-voltage at the end of rural power grid. The self-adaptive droop power control system for treating low-voltage at the end of rural power grid collects voltage data and current data at the end of rural power grid, pre-processes the two kinds of data, calculates an adjustment factor according to the two deviation values, calculates the actual power in a collection cycle according to the actual voltage measurement value and the actual current measurement value after the adjustment factor is generated, combines the actual power in the collection cycle and the adjustment factor to calculate a final adjustment power value, and adjusts the droop power of low-voltage at the end of rural power grid according to the final adjustment power value, so as to realize real-time dynamic adjustment of the voltage at the end of rural power grid, avoid static voltage adjustment mode, correspond to load changes in real time, meet dynamic demand, be suitable for use in various regions, and improve power quality stability.

The invention provides an energy-saving device with an intelligent monitoring function and an energy-saving method of the energy-saving device. The energy-saving device with the intelligent monitoring function mainly comprises a waveform correction filter and a plurality of digital electricity meters, and the waveform correction filter is connected to the input end of an electric disc of a three-phase alternating current power line so as to absorb and remove input power pollution and improve the quality of input power. The plurality of digital electricity meters are respectively connected to the input end of the three-phase alternating-current power line pan electric disc and each electric appliance system, and are connected to an energy management system, so that the electric energy use of each electric appliance system is intelligently monitored and controlled, and the power supply efficiency is greatly improved.

Disclosed are an electric power quality control method and device for an oil production platform, and a storage medium. The method includes: obtaining test data of electrical loads of power distribution rooms of an oil production platform, and determining electric power quality index data of each power distribution room based on the data; determining a power distribution room with an electric power quality problem based on the electric power quality index data and a preset index range; configuring a corresponding compensation scheme based on each electric power quality problem of the power distribution room with the electric power quality problem, the compensation scheme including a compensation device and a compensation capacity; and determining, based on the compensation device and capacity, functional and economic index data corresponding to each compensation device, and performing electric power quality control on the oil production platform based on the functional and economic index data.