A transformer substation or convertor station coupling loop earthquake risk assessment method

Abstract

The invention discloses a transformer substation or converter station coupling loop earthquake risk assessment method. The method comprises the steps that calculating the station site earthquake riskprobability of a transformer substation or a converter station; establishing a failure model of the equipment of the transformer substation or the converter station under the coupling effect, and obtaining the failure probability of the equipment under the coupling effect under the earthquake condition; establishing a disaster loss model of the equipment in an earthquake to obtain economic loss ofequipment failure in the earthquake; and obtaining an earthquake risk, wherein the earthquake risk = station location earthquake risk probability * failure probability of the equipment under the coupling effect * disaster economic loss. The method not only considers the failure probability of a single device, but also considers the failure mode and the failure probability of a connection bus, andtakes the influence of large displacement on the electrical performance of the device under the earthquake action as an influence factor of the risk, and a coupling loop failure model is provided onthe basis so as to form a coupling loop earthquake risk index.

Description

technical field [0001] The invention relates to earthquake risk assessment, in particular to an earthquake risk assessment method for a coupling circuit of a substation or a converter station. Background technique [0002] Earthquake risk analysis is based on the full analysis of the hazards of earthquakes (disaster-causing factors) and the vulnerability of hazard-bearing factors, and the assessment of the possibility of earthquakes in the assessment area and the possibility of causing a certain degree of disaster and social consequences. At present, the seismic risk assessment of substation\converter station is mostly aimed at the single equipment in the station, mainly focusing on the analysis of the seismic vulnerability of the single equipment, and there are few reports on the seismic risk assessment method of the coupling system. At the same time, due to the limitation of the size of the shaking table and the lack of dynamic characteristic parameters of the equipment, t...

AI Technical Summary

Problems solved by technology

The document "Analysis of the Impact of Sliding Fittings on the Seismic Performance of Interconnected High-Voltage Electrical Equipment" analyzes the stress of the DC circuit system under different connection methods under conventional seismic design earthquake conditions, and studies the dynamic characteristics and seismic performance of the connection method on the high-voltage circuit system The article does not consider the risk analysis from the perspective of probability

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