Relay protection device and system, realizing plug-and-play, of transformer station
A relay protection device and protection device technology, applied in the field of smart substations, can solve the problems that operation and maintenance personnel are difficult to meet the application requirements of new communication technologies, the level of network communication technology is weak, and there are relatively high risks in safe operation, so as to ensure real-time reliability It is convenient to transfer, check and rectify, and avoid the effect of network storm
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[0044] The present invention will be further described below in conjunction with the drawings and embodiments.
[0045] Such as figure 1 As shown, in the traditional protection system configuration scheme, each bay protection device is installed on site. In the protection interval of the line, transformer and bus tie, each interval MU collects the CT current of the primary equipment of the interval, and collects signals such as the state of the interval switch through the ST; in the bus protection interval, the PT voltage is connected to the merging unit of the interval; The merging unit of the transformer, bus tie and busbar interval establishes an SV switching network through the switch, which is used to transmit three-phase voltage and current AC information; the intelligent terminal of the line, transformer and bus tie interval establishes the GOOSE switching network through the switch for transmission DC information such as switching value.
[0046] Line, transformer, and bus...
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