An electrical parameter identification method and system based on power system operating data

Abstract

The invention discloses an electrical parameter identification method based on power system operating data and a system thereof. The method can use the EMS system to generate a data section library before and after a change in the operating mode of the power grid, and use it as calculation data for electrical parameter identification to perform power flow calculation. Perform error analysis between power flow calculation results and cross-section data after real changes, and continuously correct electrical parameters. Based on probability theory and mathematical statistics, a set of electrical parameters with high accuracy is established, and manual online modification is supported. The electrical parameter identification proposed by the present invention The application module can well interact with the SCADA application module and the PAS application module, and it is applied independently of the SCADA system, which greatly increases the reliability of the system operation and provides more advanced solutions for power grid short-circuit calculation, reliability analysis, state estimation, etc. Computing provides basic guarantees, promotes advanced applications of power grids, optimizes network operations, improves power grid operation levels, and reduces construction and operation and maintenance costs of power grid companies.

Description

technical field [0001] The present invention relates to the field of electric power control, and more specifically, relates to an electric parameter identification method based on electric power system operating data and a system thereof. Background technique [0002] At present, in view of the shortcomings of the traditional grid electrical parameter identification method, relevant research has proposed an electrical parameter identification method for synchronous generators in the power system, which are generally divided into two methods: offline and online. These two methods both rely on simulation technology or apply step or disturbance signals to the unit to obtain the data required for identification so as to realize the identification of relevant electrical parameters. In addition, these two methods can only be carried out when the unit is out of operation or when the unit is overhauled. In addition, the parameter identification results are very different when the un...

AI Technical Summary

Problems solved by technology

In addition, these two methods can only be carried out when the unit is out of operation or during unit maintenance. In addition, the parameter identification results are very different when the unit is under load or no load.

Images