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Time synchronizer and time synchronization method applied to protective test equipment of power system

A technology for power system protection and time synchronization devices, which is applied in the direction of synchronization devices, electrical components, advanced technologies, etc., can solve problems such as application constraints and high hardware costs, and achieve the effects of increased flexibility, improved time synchronization accuracy, and a wide range of applications

Inactive Publication Date: 2012-11-07
STATE GRID SICHUAN ELECTRIC POWER CORP ELECTRIC POWER RES INST +1
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Problems solved by technology

But the disadvantage of this method is that the cost of hardware is very high, especially for some distributed control systems with a lot of nodes, so its application is also restricted

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  • Time synchronizer and time synchronization method applied to protective test equipment of power system
  • Time synchronizer and time synchronization method applied to protective test equipment of power system
  • Time synchronizer and time synchronization method applied to protective test equipment of power system

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Embodiment Construction

[0029] The present invention is described in detail below in conjunction with accompanying drawing:

[0030] In order to overcome the deficiencies of the prior art, the present invention provides a time synchronization device applied to power system protection testing equipment. This device includes a master clock time synchronization hardware module 105 placed in the wireless control host 101. The wireless control host 101 directly communicates with the The host computer simulation platform 102 is connected, and the time synchronization module described in the present invention also includes a slave clock time synchronization hardware module 103 placed in the protection test terminal 104 . The time synchronization between the master clock time synchronization hardware module 105 and the slave clock time synchronization hardware module 103 is realized through wireless communication. The slave clock time synchronization hardware module 103 includes a constant temperature crysta...

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Abstract

The invention discloses a time synchronizer applied to protective test equipment of a power system. The time synchronizer is characterized in that the time synchronizer is provided with a wireless control host machine with a master clock time synchronization hardware module, wherein the wireless control host machine is directly connected with a software simulation platform of an upper computer, and a slave clock time synchronization hardware module is arranged in a protective test terminal. Time synchronization between the master and slave clock time synchronization hardware modules is implemented through a wireless communication application IEEE (Institute of Electrical and Electronic Engineers) 1588 time synchronization protocol. According to the technology provided by the invention, the wireless IEEE1588 time synchronization protocol is applied to a secondary side test protective device of a transformer substation of the power system, so that a network signal of a mutual inductor obtained by simulation is synchronously output in real time, in this way, a signal network output of the power system can be stimulated more authentically so as to test a plurality of secondary side test protective devices of the transformer substation at the same time.

Description

technical field [0001] The invention relates to the field of realizing the time synchronization of the distributed system of protection test terminal devices in power system substations, and specifically relates to a time synchronization module of wireless IEEE1588 time synchronization technology on full-scenario protection test terminals. Background technique [0002] The time synchronization technologies widely used in the current distributed system mainly include: network clock protocol NTP, time synchronization technology based on GPS hardware timing and the emerging IEEE1588 time synchronization protocol. Among them, the network clock protocol NTP is a pure software time synchronization technology, which realizes time synchronization at the software application layer of network transmission, and cannot handle network delay, so the stability is not high, and the synchronization accuracy is only at the millisecond level. The network clock protocol NTP is not suitable for ...

Claims

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Application Information

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IPC IPC(8): H04W56/00
CPCY02D30/70
Inventor 黄琦甄威吴杰周传瑞王彪井实张华杨舒玮郭巍江正涛罗必露
Owner STATE GRID SICHUAN ELECTRIC POWER CORP ELECTRIC POWER RES INST
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