Dynamic data-based online load modeling system

Abstract

The invention discloses a dynamic data-based online load modeling system which comprises a load model information management subsystem and at least one online load modeling device, wherein the online load modeling device is connected with the load model information management subsystem through an Ethernet; a server of the information management subsystem receives fault wave-recording files, load modeling data files and load model parameters of the modeling device; and a client of the information management subsystem realizes the management and the analysis of the load modeling data by utilizing the load modeling data files and the load model parameters received by the server or realizes the management and the analysis of the fault wave-recording files through the received fault wave-recording files. Through the dynamic data-based online load modeling system disclosed by the invention, reasonable and actual load models are provided to the power networks, the dynamic data recorded by the devices are fully utilized and the dynamic data are identified to obtain real-time and accurate load model parameters. The dynamic data-based online load modeling system can be widely applied to transformer substations and the distribution substations of large-scale industrial enterprises; and the load model parameters can provide foundations for the running manner selection, the simulation computation and the system planning of power systems.

Description

technical field [0001] The invention relates to a power system load model, in particular to an online load modeling system based on dynamic 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 transient state,...

AI Technical Summary

Problems solved by technology

So far, there is no online load modeling system based on dynamic data that can establish a comprehensive load model that accurately reflects the load characteristics and realizes the identification of electric load model parameters and fault recording at the same time.

Images