Interconnection system distributed tidal current computing method based on computation model split joint

Abstract

The invention relates to an interacted system distribution type tide computing method based on computational model marriage, which comprises the following steps: defining the handshaking branch and boundary node aggregate between subnets; respectively forming subnet information amount; selecting a main network and a slave network; merging the information amount of the main network and the slave network to obtain overall information amount and consequently obtain an overall tide computation equation set; generating a node number check list at the main network side or generating respective node number check lists of the subnets; unitedly selecting a voltage iteration initial value; solving at the main network side to obtain an overall integral tide result; returning the tide data of the slave network from the main network to the slave network in a complete transmission mode or a partial transmission mode to complete the distribution type tide computation. The invention avoids a large amount of model marriage and subsequent maintenance brought about by full network integral modeling or actual model merging, avoids complex algorithm organization patterns and simultaneously obtains a computing result in full accordance with that of centralized modeling.

Description

technical field [0001] The invention belongs to the field of power system analysis, and more precisely, the invention relates to a distributed power flow calculation method of a power system. Background technique [0002] With the development of science and technology and the need for centralization of dispatching, the power grid is increasingly interconnected, but there is a contradiction between it and the hierarchical and partitioned dispatching and control system of the power system. At present, the EMS of each power dispatching center mostly adopts the method of calculating the power flow independently, and the influence of the external network on the internal network cannot be accurately reflected in the calculation of the internal network. Although the equivalent method of the external network is adopted, the calculation results are still not accurate enough. [0003] Therefore, it is necessary to study how to accurately reflect the impact of the external network on t...

AI Technical Summary

Problems solved by technology

The main problems they have in common are: the algorithm organization model is relatively complex, and there are certain errors in the calculation results

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