Method for predicting gas in direct-current-transmission conversion transformation oil
A technology of gas in oil, prediction method, applied in the direction of material inspection products, etc., can solve the failure of gas analysis to effectively and timely find converter failures, inability to timely guide the operation unit of converter converter shutdown, and continue to run live tests, etc. question
Active Publication Date: 2013-03-13
EXAMING & EXPERIMENTAL CENT OF ULTRAHIGH VOLTAGE POWER TRANSMISSION COMPANY CHINA SOUTHEN POWER GRID
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[0004] The purpose of the present invention is to overcome the failure of gas analysis in the current DC transmission converter oil to effectively and timely find converter failures, and at the same time to guide the operating unit to stop t
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[0058] The content of the present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.
[0059] Example:
[0060] see figure 1 As shown, in order to further illustrate the characteristics of the present invention, the present embodiment is calculated as follows through specific examples: the parameter acquisition of the gas prediction method in the converter oil includes the chromatograph for gas parameter analysis in the converter oil, and the converter operation Voltage transformers, current transformers, oil temperature gauges, thermohygrometers, and basic information parameters of rheometers for parameter measurement. Among them, the chromatograph for analyzing gas parameters in rheological oil, the voltage transformer and current transformer for measuring operating parameters of rheology, oil temperature gauge, and hygrometer are commercial products. The chromatograph used for analyzing the gas param...
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The invention discloses a method for predicting gas in direct-current-transmission conversion transformation oil. The method comprises the following steps of: acquisition of parameters of the method for predicting the gas in the direct-current transmission conversion transformation oil, wherein he parameters include gas parameters in the conversion transformation oil, conversion transformation operation parameters and basic information parameters of conversion transformation; and establishment of a conversion transformation characteristic quantity matrix and a basic sample database in the method for predicting the gas in the conversion transformation oil, determination of a similar sample of the gas in the conversion transformation oil to be predicted, initial prediction on the gas in the conversion transformation oil, and optimization of the parameters in the method for predicting the gas in the conversion transformation oil, thus obtaining a gas prediction result of the conversion transformation oil, namely implementing the method for predicting the gas in the conversion transformation oil. The method can be used for predicting a gas trend in the direct-current-transmission conversion transformation oil, performing fault diagnosis with combination of a three-ratio method, a Duval triangle method and other methods, and determining faults of the conversion transformation effectively and timely so as to timely guide run units to make decisions on conversion transformation stop, continuous operation, live testing, inspection strengthening, fault diagnosis, overhaul in factory, field maintenance and the like.
Description
technical field [0001] The invention relates to the technical field of long-distance and large-capacity direct current transmission, in particular to a method for predicting gas in rheological oil of direct current transmission. Background technique [0002] The economic and energy distribution between the east and the west of my country is uneven, and high-voltage transmission technology is applied to long-distance and large-capacity power projects. However, compared with the traditional AC transmission technology, the advantages of DC transmission technology for east-west long-distance power transmission projects: 1) The wires with the same cross-section can transmit more power with less active power loss; 2) The structure of DC transmission lines is simple; 3 )Each wire can operate independently and can use the earth or sea water as the loop; 4) There is no charging power, charging current or skin effect in the system; 5) It can connect two AC systems with different frequ...
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Inventor 钱海赵建宁刘相枪邓军吕金壮田应富王奇楚金伟周震震陈禾伍衡黄和燕周海滨王朝硕张建刚杨光源常安王昕
Owner EXAMING & EXPERIMENTAL CENT OF ULTRAHIGH VOLTAGE POWER TRANSMISSION COMPANY CHINA SOUTHEN POWER GRID
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