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Residual current calculation method and device, storage medium and detection equipment

A technology of residual current and calculation method, which is applied in the direction of measuring device, only measuring current, circuit breaker test, etc., can solve the problem of unable to detect residual current value and so on

Active Publication Date: 2020-11-20
ZHEJIANG TENGEN ELECTRIC
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Problems solved by technology

[0003] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the residual current reclosing circuit breaker in the prior art cannot detect the real-time residual current value, thereby providing a calculation method, a calculation device, a storage medium and a detection method for residual current equipment

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[0033] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are 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.

[0034] In the description of the present invention, it should be noted that the terms "first", "second", and "third" are used for description purposes only, and should not be understood as indicating or implying relative importance.

[0035] In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. ...

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Abstract

The invention discloses a residual current calculation method and device, a storage medium and detection equipment. The calculation method comprises the steps of acquiring filtered residual current atthe current moment; delaying the filtered residual current at the current moment for 1 / 4 period to obtain an orthogonal coordinate signal of the residual current at the current moment; calculating aneffective value of the residual current according to the residual current at the current moment and the orthogonal coordinate signal of the residual current at the current moment; and calculating toobtain a real-time value of the residual current according to the effective value of the residual current. An effective value of the residual current is calculated through one path of residual currentat the current moment and the orthogonal coordinate signal of the residual current at the current moment; therefore, the real-time value of the residual current can be obtained in real time, real-time monitoring data are provided for the action state of residual current protection and an action value cloud platform, the digitization requirement of the residual current reclosing circuit breaker ismet, and the problem that the real-time residual current value of the residual current reclosing circuit breaker cannot be detected at present is solved.

Description

technical field [0001] The invention relates to the technical field of low-voltage electrical appliances, in particular to a calculation method, a calculation device, a storage medium and a detection device for residual current. Background technique [0002] The residual current reclosing circuit breaker is a device for protecting people's life and property in the power distribution system. The reliability and rapidity of its protection action will directly affect the characteristics of its safety protection function. Under the current general trend of power Internet of Things construction, the residual current value of the residual current protector of the terminal power distribution system needs to be detected in real time. However, the real-time residual current value of the residual current reclosing circuit breaker cannot be detected in the prior art. Contents of the invention [0003] Therefore, the technical problem to be solved by the present invention is to overc...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/327G01R19/00
CPCG01R31/327G01R19/0092
Inventor 高平徐丽玲陶晓东刘博文吴碧如
Owner ZHEJIANG TENGEN ELECTRIC
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