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Wireless phase measurement device, time synchronization method and wireless phase measurement method

A technology of phase measurement and time synchronization, which is applied in the measurement device, the measurement of electrical variables, the phase angle between voltage and current, etc., to avoid the external operation of the GPS antenna, improve the test accuracy, and improve the test efficiency.

Pending Publication Date: 2019-02-26
STATE GRID GASU ELECTRIC POWER RES INST +3
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Problems solved by technology

[0006] In order to solve the above problems, this disclosure proposes a wireless phase measurement device, a time synchronization method and a wireless phase measurement method, which mainly solve the problem of the phase sequence of the live load measurement merging unit in the relay protection or differential protection of smart substations. The wireless phase measurement device of the disclosed time synchronization method has a small phase measurement error, is not limited by space within the wireless data communication range, and has a fast time synchronization speed, greatly improving measurement accuracy, measurement efficiency and measurement security

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  • Wireless phase measurement device, time synchronization method and wireless phase measurement method
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[0044] The present disclosure will be further described below in conjunction with the accompanying drawings and embodiments.

[0045] It should be pointed out that the following detailed description is exemplary and is intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0046]It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combina...

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Abstract

The invention discloses a wireless phase measurement device, a time synchronization method and a wireless phase measurement method, and mainly solves a problem of the phase and phase sequence of an electrified load measurement combination unit in the relay protection or differential protection of an intelligent transformer station. The wireless phase measurement device employing the time synchronization method is small in phase measurement error, is not limited by the space in the wireless data communication range, is high in time synchronization speed, and greatly improves the measurement precision, efficiency and safety.

Description

technical field [0001] The present disclosure relates to the technical field related to intelligent power transformation and distribution, and specifically relates to a wireless phase measurement device, a time synchronization method and a wireless phase measurement method. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art. [0003] With the extensive application of intelligent digital substations, the installation location and operating environment of secondary equipment have undergone tremendous changes. The secondary signals of busbars and switch transformers of different voltage levels are directly converted into digital signals at the merging unit and transmitted to Central control room. The merging unit, referred to as MU, refers to the device that merges and synchronizes the electrical quantities transmitted by the primary transformer, and fo...

Claims

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Application Information

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IPC IPC(8): G01R25/00H04L29/06
CPCH04L69/28G01R25/00
Inventor 崔力心拜润卿王永年智勇郭文科陈力张坤贤倪赛赛周治伊张大伟牛浩明刘魏梅姚赵毅罗军
Owner STATE GRID GASU ELECTRIC POWER RES INST
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