Equivalent modeling method and system of ground brake resistor
A braking resistor, equivalent modeling technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve the problem that the ground braking resistor is equivalent to a voltage source, and the ground braking resistor starts repeatedly Problems such as the hysteresis voltage exiting the ground braking resistor
Inactive Publication Date: 2015-06-24
CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST
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Problems solved by technology
[0005] The technical problem to be solved in this application is to provide an equivalent modeling method and system for ground braking resistors, which solves the problem that the prior art does not consider the hysteresis voltage that the ground braking resistor exits after the grid voltage drops, which will be possible It will cause the ground braking resistor to start and exit repeatedly, which is inconsistent with the actual situation, and when the catenary voltage continues to rise, causing the power consumed by the ground braking resistor to reach the maximum power it can consume, the ground braking resistor, etc. Effective as a voltage source problem
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[0031] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.
[0032] refer to figure 1 , which shows a flow chart of an embodiment of an equivalent modeling method for ground braking resistors in the present application, which may include the following steps:
[0033] Step S101: Obtain the parameter value of the target ground braking resistor, the parameter value includes the starting threshold voltage value of the ground braking resistor, the failure threshold voltage value of the ground braking resistor, the hysteresis voltage value of the g...
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The invention provides an equivalent modeling method of a ground brake resistor. The method comprises the steps that parameter values of the target ground brake resistor are obtained, and comprise a ground brake resistor starting threshold voltage value, a ground brake resistor failure threshold voltage value, a ground brake resistor running quitting hysteresis voltage value and a ground brake resistor maximum capacity value; the current voltage value and current consumed power of the ground brake resistor are obtained in real time; when the current voltage value and the current consumed power meet corresponding preset equivalent conditions, the target ground brake resistor is equivalent to an equivalent model corresponding to the preset equivalent conditions, and the equivalent parameters of the target ground brake resistor are determined. The equivalent modeling method considers the conditions that the ground brake resistor running quitting hysteresis voltage and the consumed power of the ground brake resistor reach the consumed maximum power, criteria preventing the ground brake resistor from being wrongly started are added, the model is more reasonable, and the actual ground brake resistor real running operation conditions are met better.
Description
technical field [0001] This application relates to the field of ground braking resistor modeling in urban rail transit, and in particular to an equivalent modeling method and system for ground braking resistors. Background technique [0002] With the development of technology, people have higher and higher requirements for the equivalent modeling of ground braking resistors. [0003] At present, the existing equivalent modeling methods of ground braking resistors in urban rail transit mainly regard the ground braking resistors as voltage sources. This method does not consider the hysteresis voltage that the ground braking resistor exits after the grid voltage drops, which may cause the ground braking resistor to start and exit repeatedly, which is inconsistent with the actual situation. In addition, when the catenary voltage continues to rise, causing the power consumed by the ground braking resistor to reach the maximum power it can consume, the ground braking resistor can...
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Inventor 张杰王坚张宇陈华国张铁军陈柳松范祝霞李江红陈广赞
Owner CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST