Load modeling device based on real-time disturbance data

Abstract

A load modeling device based on real-time disturbance data comprises an analog quantity signal input board, a switching signal input board, an acquisition board, a backboard data bus, a GPS clock synchronization board, a monitor board and a supervisor unit, wherein the backboard data bus is connected with the analog quantity signal input board, the switching signal input board and the acquisition board respectively; the GPS clock synchronization board and the monitor board are connected with the acquisition board respectively; the supervisor unit is connected with the monitor board through the Ethernet. The real-time disturbance data obtained through field measurement are used for load modeling; parameter identification can be conducted on a static load model, a dynamic load model, a synthetic load model and a synthetic load model considering a distribution network to obtain the optimal load model within a selected load model range; the load modeling device records the data which can be directly used for load modeling, thereby being capable of providing a reasonable and practical load model for a grid and conducting real-time on-line identification on power load model parameters; moreover, the load model parameters can be used for realizing stable computational analysis of a data interface of simulation software BPA with a power system in common use.

Description

technical field [0001] The invention relates to electric load modeling, in particular to an electric load modeling device based on real-time disturbance data. Background technique [0002] The power system load model is a mathematical equation and corresponding parameters that reflect the characteristics of the power and current of the load port of the actual power system with its port voltage and frequency. Load modeling not only establishes models for various specific electrical equipment components, but more importantly, studies the relationship between the power absorbed by the overall load on the load bus and the change of the load bus voltage and frequency, and describes the mathematical equations that determine this relationship form and its parameters. Digital simulation of modern power system design, planning, decision-making and operation requires a more accurate load model. Because the change of the load model has different degrees of influence on the system tra...

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Problems solved by technology

So far, no load modeling device based on real-time disturbance data and belonging to the overall measurement and discrimination method has been seen. The load model established by the load modeling of this device includes static load model, dynamic load model, comprehensive load model, and comprehensive load model considering the distribution network. load model, and can obtain the optimal load model within the range of the selected load model, which can accurately reflect various load characteristics, and its accurate load model parameters can provide the basis for power system operation mode selection, simulation calculation and system planning, which is practical value

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