Power grid dispatching dynamic capacity increasing evaluation method based on state multi-dimension comprehensive evaluation

Abstract

The invention discloses a power grid dispatching dynamic capacity increasing evaluation method based on state multi-dimension comprehensive evaluation. The method includes the first step of establishing an available margin equation, in regard to transmission capacity of all lines in a load channel, of a total capacity increasing quantity deltaY, the second step of determining capacity increasing coefficients for all the lines in the load channel in consideration of the capacity increasing coefficient upper limit of through-flow equipment, the capacity increasing coefficient upper limit of a weather risk and the capacity increasing coefficient upper limit of a system abnormal risk, the third step of establishing the least square solution optimization model of the available margin equation, the fourth step of considering balance of capacity increasing load rates of the lines and setting capacity increasing coefficient initial values of the lines and the fifth step of obtaining actual capacity increasing coefficients of all the lines. The method is based on state monitoring parameters of power transmission and transformation equipment in the load channel, consideration is given to capacity limits of the power transmission and transformation equipment and health states and operational risks of the power transmission and transformation equipment, consideration is given to current moment evaluation and expected risk prediction, power grid dynamic capacity increasing evaluation and decision making can be more precise and reasonable, and the risks are lower.

Description

technical field [0001] The invention relates to a dynamic capacity-increasing decision-making method of a power grid based on multi-dimensional comprehensive evaluation of the status of power transmission and transformation equipment, especially a method based on state monitoring parameters of power transmission and transformation equipment in a load channel, taking into account the capacity limit of power transmission and transformation equipment and the health status of equipment and operation risk, taking into account the current moment assessment and expected risk prediction method of dynamic capacity increase decision-making method, which belongs to the field of power system operation analysis and decision-making technology. Background technique [0002] With the development of the national economy, the contradiction between the development of power supply capacity and the growth of actual demand in some areas has become increasingly apparent. In order to actively cope ...

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Problems solved by technology

[0003] Then, in the evaluation and decision-making process of the dynamic capacity increase of the existing power grid, the dispatcher can roughly estimate the limit of the available capacity of the transmission channel, but they have almost no way of knowing the health status and operation risks of the equipment involved in the dynamic capacity increase, which brings a lot of problems to the dispatching decision. risk of uncertainty

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