A timing system and method for online verification of power quality monitoring devices
A power quality monitoring and power quality technology, applied in the direction of measuring devices, measuring electrical variables, instruments, etc., can solve the problems of synchronization accuracy only reaching the millisecond level, real-time measurement data errors, etc., to achieve economical operation escort, reduce time errors, The effect of reducing the input of manpower and material resources
Active Publication Date: 2021-07-16
ELECTRIC POWER RES INST OF GUANGXI POWER GRID CO LTD +1
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Here, the standard power quality measurement device and the tested power quality monitoring device need to be synchronized, and the higher the synchronization consistency, the better. At present, domestic mainstream equipment only supports the simple network time protocol SNTP, and the synchronization accuracy of the two devices can only reach milliseconds Level, there is a large error in the real-time measurement data of the tested power quality monitoring device and the standard power quality measuring device
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[0029] In order to better understand the present invention, the present invention will be further described below in conjunction with accompanying drawing and specific embodiment:
[0030] Such as figure 1 As shown, a timing system for online verification of power quality monitoring devices includes a standard power quality monitoring device, a tested power quality monitoring device, a network switch, and a detection host; the standard power quality monitoring device and the tested power quality monitoring device are all Support IEC61850 communication protocol and IEEE1588 precision clock synchronization protocol, the network switch supports IEEE1588 precision clock synchronization protocol, the detection host includes a time synchronization module, and the time synchronization module includes IEEE1588 precision clock synchronization protocol; the standard power quality monitoring device and the tested power quality monitoring device are respectively It is connected to the net...
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The invention relates to the technical field of on-line verification of electric power equipment, in particular to a timing system and method for on-line verification of a power quality monitoring device. The system includes a standard power quality monitoring device, a tested power quality monitoring device, a network switch, and a detection host. The invention realizes the time synchronization between the standard power quality monitoring device and the tested power quality monitoring device through the IEEE1588 precision clock synchronization protocol, reduces the time error between the tested power quality monitoring device and the standard power quality measuring device, and does not change the power quality of the tested device. Under the condition of electrical wiring of the quality monitoring device and short-term termination of normal communication between the tested power quality monitoring device and the main station server, the on-site verification of the tested power quality monitoring device is completed, so that the regular verification of the power quality monitoring device can be carried out effectively.
Description
technical field [0001] The invention relates to the technical field of on-line verification of electric power equipment, in particular to a timing system and method for on-line verification of a power quality monitoring device. Background technique [0002] The operation management of power quality monitoring devices is one of the tasks of power quality technical supervision. After the power quality monitoring device has been operated for a long time in the harsh electromagnetic environment, it is inevitable that the reliability and measurement accuracy of the device will decrease due to the aging and failure of components, and then a large amount of invalid and abnormal data will be generated, so it needs to be regularly tested . Generally, it is not recommended to remove the power quality monitoring device and send it to the laboratory to test its accuracy, because there are safety risks such as voltage short circuit and current open circuit, but using a standard power qu...
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IPC IPC(8): G01R35/00
CPCG01R35/00
Inventor 陈卫东郭敏金庆忍姚知洋楚红波
Owner ELECTRIC POWER RES INST OF GUANGXI POWER GRID CO LTD