A method to improve the reliability of new energy operation in regional power grid divisions
A regional power grid and new energy technology, applied in the field of power system, to achieve the effect of improving reliability
Active Publication Date: 2022-04-05
STATE GRID HENAN ELECTRIC POWER ELECTRIC POWER SCI RES INST +2
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[0004] To sum up, the current sensitivity analysis of the influencing factors of new energy carrying capacity is limited to the analysis of a single influencing factor on the new energy carrying capacity of a single power grid, failing to achieve comprehensive consideration
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[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0041] 1. The sensitivity analysis method of the factors affecting the new energy carrying capacity of the regional power grid partition adopts the following steps in sequence:
[0042] (1) According to the grid aggregation model, the regional grid structure is simplified to form several independent partitions;
[0043] (2) Carry out power and electricity balance calculations for each partition, and obtain the carrying capacity N of the regional power gri...
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The invention discloses a method for improving the reliability of new energy operation in regional power grid partitions, and proposes to analyze the sensitivity of each index of new energy carrying capacity by using the power balance under the system security constraints in the partition mode. In the dispatching period, Determine the new energy grid-connected capacity, new energy resources, system load, system spinning reserve capacity, section limit, and utilization hours of thermal power units under a typical operation mode, determine the reasonable change range of each factor, and target the new energy carrying capacity for each different impact Sensitivity calculation and analysis of the key factors in their changing intervals are carried out, and the weak links in the new energy operation of the regional power grid divisions are found out according to the analysis results, and the weak links are adjusted accordingly. The practical difficulties faced by scheduling decision makers have important practical value.
Description
technical field [0001] The invention relates to the field of power systems, in particular to a method for improving the reliability of new energy operation in regional power grid partitions. Background technique [0002] In the regional power grid where the proportion of new energy is increasing, the reasonable arrangement of the grid operation mode must fully consider its own carrying capacity of new energy in order to ensure the safe operation of the grid and the reliable consumption of new energy. The core problem of determining the carrying capacity of the power grid is to determine the ability of the power grid to accept new energy based on the capacity of the system's spinning reserve capacity, the safe transmission capacity of the system section, and the safe and reasonable use of conventional energy, and under the dual uncertainties of new energy output and system load. Through the sensitivity analysis of the key factors affecting the new energy carrying capacity of ...
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IPC IPC(8): H02J3/38
Inventor 李强刘红岭饶宇飞李朝晖杨海晶魏寒冰于琳琳滕卫军刘巍孙鑫王建波
Owner STATE GRID HENAN ELECTRIC POWER ELECTRIC POWER SCI RES INST