Power grid operation state evaluation method of multi-province combined intraday tie line and system thereof

Abstract

The invention provides a power grid operation state evaluation method of a multi-province combined intraday tie line. The method comprises the steps as follows: obtaining multi-province power grid operation state information; substituting the operation state information into a pre-constructed multi-province combined power grid state evaluation index system model for calculation to obtain each index value; determining positive and negative ideal solutions of the indexes based on the index values in combination with a TOPSIS method; evaluating the state of the multi-province combined power gridbased on the index positive and negative ideal solutions; combining actual requirements of power grid operation personnel and establishing a relationship between empirical cognition of power grid operation personnel on the importance of each index to power grid operation and an index comprehensive result by utilizing a sorting method approaching to an ideal solution. The method is simple and visual, can achieve dynamic evaluation of the operation of the power grid, facilitates the timely mastering of the operation state of the power grid for a power grid dispatching operator, can analyze whether a current tie line plan has a further adjustment and improvement space or not through the comparison with an ideal state, and provides a guidance for the optimized operation of the power grid.

Description

technical field [0001] The invention belongs to the technical field of automation, and relates to a method and a system for evaluating the operation state of a power grid of a multi-province combined intraday tie line. Background technique [0002] At present, the various regions / provinces of China's power grid are mainly connected by UHV AC and DC tie lines, and the tie line plan is formulated by the dispatching center above the provincial level. At present, the tie line plan is mainly arranged based on annual, monthly and day-ahead power transactions. For a long time, the planning and grid operation have been loosely coupled, and there is no flexible configuration capability that takes into account the actual operation of the power grids of both senders and receivers. However, with the development of clean energy and the construction of UHV power grids, the optimization of the tie line operation mode can further utilize the high-quality regulation resources in different re...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiency that the dispatcher cannot fully grasp the actual operation state of the power grid in the intraday adjustment of the existing tie lines, the present invention provides a method and system for evaluating the power grid operation state of the multi-province joint intraday tie line, which can timely grasp the operation of the power grid state, and through comparison with the ideal state, it is possible to analyze whether there is room for further adjustment and improvement in the current tie-line plan, and provide guidance for the optimal operation of the power grid. The specific scheme is as follows:

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