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Phase difference detection device and detection method

A phase difference detection and phase difference technology, which is applied in the direction of measuring device, phase angle between voltage and current, measuring electrical variables, etc., can solve the problem of signal clutter affecting accuracy and so on

Pending Publication Date: 2020-12-18
NINGXIA KAICHEN ELECTRIC GROUP
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Problems solved by technology

[0003] The purpose of the embodiments of the present invention is to provide a phase difference detection device, aiming to solve the problem that the accuracy is easily affected by signal clutter

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Embodiment Construction

[0020] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0021] The specific implementation of the present invention will be described in detail below in conjunction with specific embodiments.

[0022] Such as figure 1 As shown, it is a block diagram of a phase difference detection device provided by an embodiment of the present invention, including:

[0023] The hardware zero-crossing module converts the alternating voltage to be measured into positive and zero alternating voltages;

[0024] The signal processing module is connected to the hardware zero-crossing module, and is used to convert the voltage into the signal type voltage used by the hardwa...

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Abstract

The invention is applicable to the technical field of power testing, and provides a phase difference detection device and method, and the device comprises: a hardware zero-crossing module which converts a to-be-detected alternating voltage into a positive zero alternating voltage; a signal processing module which is connected with the hardware zero-crossing module and is used for converting the voltage into a signal type voltage used by the hardware zero-crossing module; a jump edge monitoring module which is used for monitoring a jump edge of the square wave between a high level and a low level and sending a signal notice; a high-low level monitoring module which is connected with the jump edge monitoring module and is used for carrying out timing judgment and storage on the high-low level of the incoming signal; a filtering module which is connected with the high-low level monitoring module and is used for filtering level jump caused by signal noise; and a phase difference monitoringmodule which is used for processing and summarizing the received data through calculation and logic execution programs to obtain phase difference data. The device and method has the advantages of accurate inspection data, good safety and capability of overcoming the detection limitation.

Description

technical field [0001] The invention belongs to the technical field of electric power testing, and in particular relates to a phase difference detection device and a detection method. Background technique [0002] Phase difference is an extremely important electrical quantity in high-voltage and low-voltage complete equipment. It is usually used in the synchronous capture function of the bus voltage of the rotating load and the incoming line voltage to be switched for switching the incoming line when the rotating load is stopped, and monitoring When the system is running, whether there is a three-phase power load asymmetry that causes damage to electrical equipment. Domestic phase difference measurement lags behind the world's advanced level, and high-precision phase identification is particularly important with the development of power systems and the progress of national defense medical and high-tech industries. At present, the phase detection equipment has problems such ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R25/00
CPCG01R25/00
Inventor 谢秉旺张衍奎王川朱建华鲍伟殷宝玉姚婷
Owner NINGXIA KAICHEN ELECTRIC GROUP
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