A multi-stage coordinated power grid scheduling method based on network equivalence

Abstract

The invention relates to a multistage coordination power grid dispatching method based on network equivalence, and belongs to the technical field of power system dispatching. Firstly, the network dispatcher estimates an inter-provincial tie line power initial value according to related information and issues the inter-provincial tie line power initial value to each provincial dispatcher, each provincial dispatcher performs network equivalence on the provincial dispatcher after making a provincial dispatching plan, calculates the equivalent injection power of tie line nodes and tie line power marginal prices and uploads the equivalent injection power to the network dispatcher; And the network dispatcher generates a dynamic tie line power output price response function, optimizes the networkdispatcher network model, calculates the optimal tie line output power, and issues the optimal tie line output power to each provincial dispatcher. And multi-stage coordinated power grid scheduling based on network equivalence is realized. According to the method, standardization of making a cross-regional tie line scheduling plan and an inter-provincial tie line scheduling plan is provided for relevant scheduling personnel of national regulation and network scheduling, so that the overall total power generation cost or total power generation coal consumption of the national power grid is minimum, optimal scheduling and coordinated scheduling are realized, and the optimal configuration of energy resources within the range of the national power grid is achieved.

Description

technical field [0001] The invention relates to a network equivalent-based multi-level coordinated power grid scheduling method, which belongs to the technical field of power system scheduling. Background technique [0002] my country's energy resources and power loads are distributed in reverse. Using UHV transmission technology to absorb new energy in a larger space has become the direction of future research and application. It is very important to formulate a reasonable scheduling mode for cross-regional and inter-provincial contact lines. At present, the operation of the State Grid implements "unified dispatching and hierarchical management". The scheduling plan for cross-regional contact lines is formulated by the State Commissioner, and the dispatching plan for inter-provincial contact lines is formulated by the Network Commissioner. [0003] Under the current dispatching operation mode in my country, the formulation of the day-ahead active power dispatching plan of...

AI Technical Summary

Problems solved by technology

[0005] 1. It is highly dependent on manual experience and lacks a set of standardized and institutionalized model support;

[0006] 2. There is no guarantee that the total power generation cost of the State Grid as a whole or the minimum coal consumption for total power generation;

[0007] 3. Unable to coordinate the power balance between regions and provinces

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