Station domain protection function migration method

A station domain protection and function technology, applied in the field of station domain protection function migration, can solve the problems of limited number of intervals, poor quickness, poor versatility, etc., to ensure reliability, strong applicability, improve power supply reliability and economical effect

Active Publication Date: 2014-04-02
NANJING GUODIAN NANZI POWER GRID AUTOMATION
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Problems solved by technology

[0003] The existing station area protection adopts the scheme of configuring real-time backup protection for all 110kV lines, but because the setting of the fixed value needs to cooper

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[0025] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention will be further explained below in conjunction with specific embodiments.

[0026] In the new generation of intelligent substations, the station domain protection can obtain information about the entire station, such as the operating status of the localized device, SV (Sampling Value) messages, and GOOSE (Generic Object Oriented Substation Event) messages. The configuration of site protection is improved.

[0027] Add a function migration CPU to the existing station domain protection. The number of function migration CPUs is determined according to the type of protection object to be migrated. One type of migration CPU is added. The function migration CPU includes all the functions of in-situ protection except for the longitudinal protection of the information volume of the opposite substation. When the in-situ protection is norm...

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Abstract

The invention discloses a station domain protection function migration method based on a new-generation intelligent substation hierarchical relay protection structure and full-station information sharing. According to the method, function migration for in-situ protection is realized in station domain protection, a functional module is configured according to types of protected objects, and the function migration is in a hot standby status in the case of the normal operation of the in-situ protection; when the condition that the in-situ protection is abnormal or in a maintenance status is detected by the station domain protection, protection functions of abnormal intervals are migrated to the station domain protection. The function migration method disclosed by the invention is not restricted to the number of the protected objects, and all functions, except for pilot protection needing to use opposite-side substation information amount, of the in-situ protection in function failure can be migrated to the station domain protection, so that the applicability is very strong, and the reliability of system power supplying and the rapidity of relay protection are guaranteed.

Description

technical field [0001] The invention relates to a station domain protection function migration method based on a new generation of intelligent substation hierarchical relay protection structure and information sharing of the whole station, and belongs to the technical field of power system automation. Background technique [0002] In the past three-layer two-network structure of intelligent stations, since the protection of the voltage level of 110kV and below is configured in a single set, if the protection is abnormally exited or the protected object will be in an unprotected state during maintenance, the primary equipment has to be stopped, affecting reliability and economy of power supply. According to the hierarchical design scheme of the new generation of smart substations, the relay protection structure is divided into three layers: local protection layer, station domain protection layer and wide area protection layer. The station domain protection can obtain the inf...

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Application Information

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IPC IPC(8): G06F11/16H02H1/00
Inventor 陈福锋兰金波姚亮张尧陈琦肖明
Owner NANJING GUODIAN NANZI POWER GRID AUTOMATION
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