Online generation method for external network equivalent model of designated region in power system

Abstract

The invention relates to an online generation method for an external network equivalent model of a designated region in a power system, and belongs to the technical field of power system scheduling automation. The method comprises: monitoring the available time change of a power grid model in real time and automatically obtaining an updated power grid model; acquiring the real-time operating dataof the power grid according to a set period; performing regional external network equivalent calculation, and according to a set branch opening threshold and a set branch shrinkage threshold, optimizing an output external network equivalent model and outputting a state estimation data file and a real-time data file. The method directly acquires the model and the data from an OCS platform, monitorsthe grid changes in real time, has high real-time performance, and achieves accurate regional power grid calculation. The method optimizes the generation method of the regional external network equivalent model, simplifies the regional equivalent model on the basis of ensuring the rationality of the regional external network equivalent model, and makes the generated regional external network equivalent model visualized and easy to use.

Description

technical field [0001] The invention relates to an online generation method of an external network equivalent model of a designated area in a power system, and belongs to the technical field of power system scheduling automation. Background technique [0002] The power grid is composed of multiple interconnected regions, and each region is independent in dispatching and controlling the power grid. How to ensure that the grid dispatching centers at all levels independently analyze and calculate the power grids in their jurisdictions is correct, which directly affects the correctness of grid dispatching decisions. In order to improve the accuracy of the independent calculation of the regional power grid's own grid model, it is necessary to perform equivalent processing on the external system. At present, Guangdong Power Grid Dispatching Control Center has built an integrated intelligent dispatching system platform (OCS), and it is necessary to realize the online generation of...

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Problems solved by technology

The method "Automatic Generation Method of Power System Equivalent Model" (Patent Application No. 200510086549.8) currently applied in Guangdong Power Grid Dispatching Control Center has the disadvantage that the real-time performance of the system does not meet the current needs; the regional extranet model needs to be further simplified ;The output power flow data is too simple and does not meet the data requirements of the power grid in the specified area

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