Electric parameter identification method based on power system operation data and system thereof

Abstract

The invention discloses an electric parameter identification method based on power system operation data and a system thereof. The method can generate a data section library before and after the change of a power network operation mode by using an EMS system, the data section library is taken as calculation data of electrical parameter identification for power flow calculation, error analysis is carried out on a power flow calculation result and the section data that has really changed, continuous revision of electrical parameters is conducted, a set of electrical parameters with high accuracyis established based on the probability theory and mathematical statistics, and manual online modification is supported. An electric parameter identification application module provided by the invention can greatly realize data interaction with an SCADA application module and a PAS application module, is independent from an SCADA system for application, greatly improves the reliability of the system operation, provides basic guarantee for more advanced calculations such as short-circuit calculation, reliability analysis, state estimation and the like of a power grid, promotes the high-level application of the power grid, optimizes the operation of the grid, improves the operation level of the power grid, and reduces the construction and operation and maintenance costs of a power grid company.

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...

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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.

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