Receiving end grid stability control load shedding method based on WAMS

Abstract

The invention provides a receiving end grid stability control load shedding method based on a WAMS, which relates to the field of power systems and automated control and is invented for solving that influence degree of faults to each node is not reflected when all the loads participate in shedding in the conventional receiving end grid stability control load shedding offline decision-making method. The method provided by the invention comprises the following steps: calculating total amount of loads needed to be shed according to preconceived accidents; calculating a load shedding coefficient of each node according to a power flow tracing algorithm; calculating load shedding amount of each node and issuing a strategy; judging operation work conditions and executing stability control measures. The method provided by the invention is applied to configuration and strategy research of grid safety stability control, and provides a real-time decision-making feasible scheme for a receiving endgrid stability control load shedding system.

Description

technical field [0001] The invention relates to the field of electric power system and automatic control, in particular to a WAMS-based method for steady control and load shedding of a receiving-end power grid. Background technique [0002] In the traditional off-line decision-making scheme of receiving-end grid stability control and load shedding, all loads at different locations may participate in shedding, which does not reflect the degree of influence of system failures on each node. At the same time, since the decision table of steady control and load shedding control needs to be indexed according to the typical working conditions and faults established in advance, that is, real-time decision-making is not realized, and the fault table cannot cover all potential faults, so if the actual working conditions (or faults If the matching error of the state) is too large, or even completely mismatched, the second line of defense may be seriously under-controlled, thereby causi...

AI Technical Summary

Problems solved by technology

[0002] In the traditional off-line decision-making scheme of receiving-end power grid stability control and load shedding, all loads at different locations may participate in shedding, which does not reflect the degree of impact of system failures on each node

At the same time, since the decision table of steady control and load shedding control needs to be indexed according to the typical working conditions and faults established in advance, that is, real-time decision-making is not realized, and the fault table cannot cover all potential faults, so if the actual working conditions (or faults state) if the matching error is too large, or even completely mismatched, the second line of defense may be seriously under-controlled, which will cause the action of the third line of defense to expand the scope of power outages

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