Special data interaction method and device for intelligent substation

Abstract

The invention relates to a special data interaction method and device for an intelligent substation. According to the special data interaction method for the intelligent substation, one-way filtration and isolation of an SMV sampling value control block sent to a relay protection device by a process layer interchanger is achieved, bidirectional interaction of GOOSE control blocks respectively sent to the relay protection device and the interchanger by the interchanger and the relay protection device is kept, the SMV sampling control block required by a test is added from other input ports of a special data interaction device through an optical digital relay protection instrument, the added SMV sampling value control block and the GOOSE control blocks are transmitted to the relay protection device in the same pair of optical cables, and an integral transmission test of the relay protection device and an intelligent terminal is achieved. The special data interaction method-based special data interaction device for the intelligent substation is in tandem connection between the process layer interchanger and the relay protection device and is convenient to achieve the integral transmission test of the sampling value SMV and GOOSE combined networking intelligent substation relay protection and other safe automatic devices.

Description

technical field [0001] The invention relates to the field of relay protection testing for a secondary system of an intelligent substation in an electric power system, and in particular to a special data interaction method and device for an intelligent substation. Background technique [0002] The smart substation is a modern substation constructed by layers of intelligent primary equipment and networked secondary equipment, and based on the IEC61850 system, which can realize information sharing and interoperability between intelligent electrical equipment in the substation. The smart substation has the characteristics of simple secondary system structure, no open circuit in the secondary circuit to introduce high voltage danger, strong anti-electromagnetic interference ability of optical fiber transmission, etc. The smart substation using electronic, optical fiber or magneto-optical glass transformers also has the floor area Small size, no CT saturation and ferromagnetic res...

AI Technical Summary

Problems solved by technology

Its problem is the dependence on the clock synchronization system and the reliability of the network switching equipment. With the breakthrough of these two technologies, the application of the combined network mode smart substation in the smart grid will be more and more, so that Become the mainstream mode of smart substation

If it is necessary to realize the GOOSE transmission of the protection and intelligent terminal, and the bus MU does not stop working, it is difficult to achieve;

[0008] 3) The device and signal isolation and reorganization can be carried out by re-dividing the LAN ID of the process layer switch. However, in the actual operation of the substation, the switch is reset and the virtual LAN number (VLANID) of the network is modified. The switch needs to be powered off. After the test Changed it back again, and there is a problem that the switch needs to be retested;

[0009] With the batch construction of smart substations, the regular inspection of the above-mentioned SMV / GOOSE combined network substations will become more and more prominent, and even directly affect the safe and stable operation of substations

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