Multi-region asynchronous coordination dynamic economic dispatching method based on robustness tie line plan

Abstract

The invention relates to a multi-region asynchronous coordination dynamic economic dispatching method based on a robustness tie line plan, and belongs to the technical field of operation and control of a power system. The method comprises the steps of firstly, establishing a multi-region asynchronous coordination dynamic economic dispatching model based on a robustness tie line plan in consideration of wind power uncertainty, wherein the established model is a two-phase robustness optimization model, and the model is composed of a target function and a constraint condition; and then converting the established multi-region asynchronous coordination dynamic economic dispatching model into a matrix expression, solving the model by adopting a solution algorithm based on a constraint-column generation method, and performing economic dispatching by using the result. The peak-load regulating capacity of different regions of a grid is sufficiently developed in consideration of wind power uncertainty, so that the method adapts to quick fluctuation of wind power and can effectively reduce abandoned wind.

Description

technical field [0001] The invention belongs to the technical field of power system operation and control, in particular to a multi-area asynchronous coordination dynamic economic dispatch method based on a robust tie-line plan. Background technique [0002] At present, my country's interconnected grid adopts a hierarchical and partitioned control architecture. my country's large interconnected power grid is composed of several regional power grids, and each regional power grid is composed of multiple provincial power grids. Among them, each provincial power grid control center is responsible for monitoring and controlling the local power grid, and each provincial power grid control center is coordinated by the regional power grid upper control center. The upper control center is mainly responsible for the monitoring, decision-making and control of the power flow of tie lines between provincial power grids. [0003] At present, my country's interconnection grid dispatching...

AI Technical Summary

Problems solved by technology

First of all, this method requires the provincial power grid to strictly implement the tie-line power flow plan set before the day in the intraday dispatching, which limits the flexible power exchange between regions

Therefore, this scheduling method not only limits the sharing of regional spinning reserve and peak shaving capacity, but also cuts off the huge potential cross-regional wind power consumption market

Due to the low accuracy of wind power forecasting, the result of the tie-line plan set in the day before is difficult to adapt to the rapid fluctuation of wind power in the day

In addition, the traditional tie-line planning decision-making method does not take into account the uncertainty of wind power, which may lead to unreasonable tie-line planning, resulting in unnecessary wind curtailment due to insufficient downward rotation reserve in the power receiving end of the tie-line.

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